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nl80211: Add support for driver-based PMKSA cache
[thirdparty/hostap.git] / wpa_supplicant / wpa_supplicant.c
CommitLineData
6fc6879b
JM		 1/*
2 * WPA Supplicant
9e074973 3 * Copyright (c) 2003-2011, Jouni Malinen <j@w1.fi>
6fc6879b
JM		 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"
d47fa330 22#include "crypto/random.h"
6fc6879b
JM		 23#include "eapol_supp/eapol_supp_sm.h"
24#include "eap_peer/eap.h"
3ec97afe 25#include "eap_server/eap_methods.h"
3acb5005 26#include "rsn_supp/wpa.h"
6fc6879b 27#include "eloop.h"
6fc6879b
JM		 28#include "config.h"
29#include "l2_packet/l2_packet.h"
30#include "wpa_supplicant_i.h"
2d5b792d 31#include "driver_i.h"
6fc6879b 32#include "ctrl_iface.h"
6fc6879b 33#include "pcsc_funcs.h"
90973fb2 34#include "common/version.h"
3acb5005
JM		 35#include "rsn_supp/preauth.h"
36#include "rsn_supp/pmksa_cache.h"
90973fb2 37#include "common/wpa_ctrl.h"
6fc6879b 38#include "mlme.h"
90973fb2 39#include "common/ieee802_11_defs.h"
72044390 40#include "p2p/p2p.h"
6fc6879b
JM		 41#include "blacklist.h"
42#include "wpas_glue.h"
116654ce 43#include "wps_supplicant.h"
11ef8d35 44#include "ibss_rsn.h"
c2a04078 45#include "sme.h"
1f1b62a0 46#include "ap.h"
b22128ef 47#include "p2p_supplicant.h"
8bac466b 48#include "notify.h"
60b94c98 49#include "bgscan.h"
83922c2d 50#include "bss.h"
9ba9fa07 51#include "scan.h"
6fc6879b
JM		 52
53const char *wpa_supplicant_version =
54"wpa_supplicant v" VERSION_STR "\n"
9e074973 55"Copyright (c) 2003-2011, Jouni Malinen <j@w1.fi> and contributors";
6fc6879b
JM		 56
57const char *wpa_supplicant_license =
58"This program is free software. You can distribute it and/or modify it\n"
59"under the terms of the GNU General Public License version 2.\n"
60"\n"
61"Alternatively, this software may be distributed under the terms of the\n"
62"BSD license. See README and COPYING for more details.\n"
63#ifdef EAP_TLS_OPENSSL
64"\nThis product includes software developed by the OpenSSL Project\n"
65"for use in the OpenSSL Toolkit (http://www.openssl.org/)\n"
66#endif /* EAP_TLS_OPENSSL */
67;
68
69#ifndef CONFIG_NO_STDOUT_DEBUG
70/* Long text divided into parts in order to fit in C89 strings size limits. */
71const char *wpa_supplicant_full_license1 =
72"This program is free software; you can redistribute it and/or modify\n"
73"it under the terms of the GNU General Public License version 2 as\n"
74"published by the Free Software Foundation.\n"
75"\n"
76"This program is distributed in the hope that it will be useful,\n"
77"but WITHOUT ANY WARRANTY; without even the implied warranty of\n"
78"MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the\n"
79"GNU General Public License for more details.\n"
80"\n";
81const char *wpa_supplicant_full_license2 =
82"You should have received a copy of the GNU General Public License\n"
83"along with this program; if not, write to the Free Software\n"
84"Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA\n"
85"\n"
86"Alternatively, this software may be distributed under the terms of the\n"
87"BSD license.\n"
88"\n"
89"Redistribution and use in source and binary forms, with or without\n"
90"modification, are permitted provided that the following conditions are\n"
91"met:\n"
92"\n";
93const char *wpa_supplicant_full_license3 =
94"1. Redistributions of source code must retain the above copyright\n"
95" notice, this list of conditions and the following disclaimer.\n"
96"\n"
97"2. Redistributions in binary form must reproduce the above copyright\n"
98" notice, this list of conditions and the following disclaimer in the\n"
99" documentation and/or other materials provided with the distribution.\n"
100"\n";
101const char *wpa_supplicant_full_license4 =
102"3. Neither the name(s) of the above-listed copyright holder(s) nor the\n"
103" names of its contributors may be used to endorse or promote products\n"
104" derived from this software without specific prior written permission.\n"
105"\n"
106"THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS\n"
107"\"AS IS\" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT\n"
108"LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR\n"
109"A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT\n";
110const char *wpa_supplicant_full_license5 =
111"OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,\n"
112"SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT\n"
113"LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,\n"
114"DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY\n"
115"THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT\n"
116"(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE\n"
117"OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.\n"
118"\n";
119#endif /* CONFIG_NO_STDOUT_DEBUG */
120
6fc6879b
JM		 121extern int wpa_debug_level;
122extern int wpa_debug_show_keys;
123extern int wpa_debug_timestamp;
c5121837 124extern struct wpa_driver_ops *wpa_drivers[];
6fc6879b
JM		 125
126/* Configure default/group WEP keys for static WEP */
0194fedb 127int wpa_set_wep_keys(struct wpa_supplicant *wpa_s, struct wpa_ssid *ssid)
6fc6879b
JM		 128{
129 int i, set = 0;
130
131 for (i = 0; i < NUM_WEP_KEYS; i++) {
132 if (ssid->wep_key_len[i] == 0)
133 continue;
134
135 set = 1;
0382097e 136 wpa_drv_set_key(wpa_s, WPA_ALG_WEP, NULL,
da64c266 137 i, i == ssid->wep_tx_keyidx, NULL, 0,
6fc6879b
JM		 138 ssid->wep_key[i], ssid->wep_key_len[i]);
139 }
140
141 return set;
142}
143
144
145static int wpa_supplicant_set_wpa_none_key(struct wpa_supplicant *wpa_s,
146 struct wpa_ssid *ssid)
147{
148 u8 key[32];
149 size_t keylen;
71934751 150 enum wpa_alg alg;
6fc6879b
JM		 151 u8 seq[6] = { 0 };
152
153 /* IBSS/WPA-None uses only one key (Group) for both receiving and
154 * sending unicast and multicast packets. */
155
d7dcba70 156 if (ssid->mode != WPAS_MODE_IBSS) {
f049052b
BG		 157 wpa_msg(wpa_s, MSG_INFO, "WPA: Invalid mode %d (not "
158 "IBSS/ad-hoc) for WPA-None", ssid->mode);
6fc6879b
JM		 159 return -1;
160 }
161
162 if (!ssid->psk_set) {
f049052b
BG		 163 wpa_msg(wpa_s, MSG_INFO, "WPA: No PSK configured for "
164 "WPA-None");
6fc6879b
JM		 165 return -1;
166 }
167
168 switch (wpa_s->group_cipher) {
169 case WPA_CIPHER_CCMP:
170 os_memcpy(key, ssid->psk, 16);
171 keylen = 16;
172 alg = WPA_ALG_CCMP;
173 break;
174 case WPA_CIPHER_TKIP:
175 /* WPA-None uses the same Michael MIC key for both TX and RX */
176 os_memcpy(key, ssid->psk, 16 + 8);
177 os_memcpy(key + 16 + 8, ssid->psk + 16, 8);
178 keylen = 32;
179 alg = WPA_ALG_TKIP;
180 break;
181 default:
f049052b
BG		 182 wpa_msg(wpa_s, MSG_INFO, "WPA: Invalid group cipher %d for "
183 "WPA-None", wpa_s->group_cipher);
6fc6879b
JM		 184 return -1;
185 }
186
187 /* TODO: should actually remember the previously used seq#, both for TX
188 * and RX from each STA.. */
189
0382097e 190 return wpa_drv_set_key(wpa_s, alg, NULL, 0, 1, seq, 6, key, keylen);
6fc6879b
JM		 191}
192
193
194static void wpa_supplicant_timeout(void *eloop_ctx, void *timeout_ctx)
195{
196 struct wpa_supplicant *wpa_s = eloop_ctx;
197 const u8 *bssid = wpa_s->bssid;
a8e16edc 198 if (is_zero_ether_addr(bssid))
6fc6879b
JM		 199 bssid = wpa_s->pending_bssid;
200 wpa_msg(wpa_s, MSG_INFO, "Authentication with " MACSTR " timed out.",
201 MAC2STR(bssid));
202 wpa_blacklist_add(wpa_s, bssid);
203 wpa_sm_notify_disassoc(wpa_s->wpa);
204 wpa_supplicant_disassociate(wpa_s, WLAN_REASON_DEAUTH_LEAVING);
205 wpa_s->reassociate = 1;
48b84f18
BG		 206
207 /*
208 * If we timed out, the AP or the local radio may be busy.
209 * So, wait a second until scanning again.
210 */
211 wpa_supplicant_req_scan(wpa_s, 1, 0);
6fc6879b
JM		 212}
213
214
215/**
216 * wpa_supplicant_req_auth_timeout - Schedule a timeout for authentication
217 * @wpa_s: Pointer to wpa_supplicant data
218 * @sec: Number of seconds after which to time out authentication
219 * @usec: Number of microseconds after which to time out authentication
220 *
221 * This function is used to schedule a timeout for the current authentication
222 * attempt.
223 */
224void wpa_supplicant_req_auth_timeout(struct wpa_supplicant *wpa_s,
225 int sec, int usec)
226{
c2a04078
JM		 227 if (wpa_s->conf && wpa_s->conf->ap_scan == 0 &&
228 (wpa_s->drv_flags & WPA_DRIVER_FLAGS_WIRED))
6fc6879b
JM		 229 return;
230
f049052b 231 wpa_dbg(wpa_s, MSG_DEBUG, "Setting authentication timeout: %d sec "
6fc6879b
JM		 232 "%d usec", sec, usec);
233 eloop_cancel_timeout(wpa_supplicant_timeout, wpa_s, NULL);
234 eloop_register_timeout(sec, usec, wpa_supplicant_timeout, wpa_s, NULL);
235}
236
237
238/**
239 * wpa_supplicant_cancel_auth_timeout - Cancel authentication timeout
240 * @wpa_s: Pointer to wpa_supplicant data
241 *
242 * This function is used to cancel authentication timeout scheduled with
243 * wpa_supplicant_req_auth_timeout() and it is called when authentication has
244 * been completed.
245 */
246void wpa_supplicant_cancel_auth_timeout(struct wpa_supplicant *wpa_s)
247{
f049052b 248 wpa_dbg(wpa_s, MSG_DEBUG, "Cancelling authentication timeout");
6fc6879b
JM		 249 eloop_cancel_timeout(wpa_supplicant_timeout, wpa_s, NULL);
250 wpa_blacklist_del(wpa_s, wpa_s->bssid);
251}
252
253
254/**
255 * wpa_supplicant_initiate_eapol - Configure EAPOL state machine
256 * @wpa_s: Pointer to wpa_supplicant data
257 *
258 * This function is used to configure EAPOL state machine based on the selected
259 * authentication mode.
260 */
261void wpa_supplicant_initiate_eapol(struct wpa_supplicant *wpa_s)
262{
263#ifdef IEEE8021X_EAPOL
264 struct eapol_config eapol_conf;
265 struct wpa_ssid *ssid = wpa_s->current_ssid;
266
53895c3b 267#ifdef CONFIG_IBSS_RSN
d7dcba70 268 if (ssid->mode == WPAS_MODE_IBSS &&
53895c3b
JM		 269 wpa_s->key_mgmt != WPA_KEY_MGMT_NONE &&
270 wpa_s->key_mgmt != WPA_KEY_MGMT_WPA_NONE) {
271 /*
272 * RSN IBSS authentication is per-STA and we can disable the
273 * per-BSSID EAPOL authentication.
274 */
275 eapol_sm_notify_portControl(wpa_s->eapol, ForceAuthorized);
276 eapol_sm_notify_eap_success(wpa_s->eapol, TRUE);
277 eapol_sm_notify_eap_fail(wpa_s->eapol, FALSE);
278 return;
279 }
280#endif /* CONFIG_IBSS_RSN */
281
0a40ec6a
JM		 282 eapol_sm_notify_eap_success(wpa_s->eapol, FALSE);
283 eapol_sm_notify_eap_fail(wpa_s->eapol, FALSE);
284
6fc6879b
JM		 285 if (wpa_s->key_mgmt == WPA_KEY_MGMT_NONE ||
286 wpa_s->key_mgmt == WPA_KEY_MGMT_WPA_NONE)
287 eapol_sm_notify_portControl(wpa_s->eapol, ForceAuthorized);
288 else
289 eapol_sm_notify_portControl(wpa_s->eapol, Auto);
290
291 os_memset(&eapol_conf, 0, sizeof(eapol_conf));
292 if (wpa_s->key_mgmt == WPA_KEY_MGMT_IEEE8021X_NO_WPA) {
293 eapol_conf.accept_802_1x_keys = 1;
294 eapol_conf.required_keys = 0;
295 if (ssid->eapol_flags & EAPOL_FLAG_REQUIRE_KEY_UNICAST) {
296 eapol_conf.required_keys |= EAPOL_REQUIRE_KEY_UNICAST;
297 }
298 if (ssid->eapol_flags & EAPOL_FLAG_REQUIRE_KEY_BROADCAST) {
299 eapol_conf.required_keys |=
300 EAPOL_REQUIRE_KEY_BROADCAST;
301 }
302
c2a04078 303 if (wpa_s->conf && (wpa_s->drv_flags & WPA_DRIVER_FLAGS_WIRED))
6fc6879b 304 eapol_conf.required_keys = 0;
6fc6879b
JM		 305 }
306 if (wpa_s->conf)
307 eapol_conf.fast_reauth = wpa_s->conf->fast_reauth;
308 eapol_conf.workaround = ssid->eap_workaround;
56586197
JM		 309 eapol_conf.eap_disabled =
310 !wpa_key_mgmt_wpa_ieee8021x(wpa_s->key_mgmt) &&
ad08c363
JM		 311 wpa_s->key_mgmt != WPA_KEY_MGMT_IEEE8021X_NO_WPA &&
312 wpa_s->key_mgmt != WPA_KEY_MGMT_WPS;
6fc6879b
JM		 313 eapol_sm_notify_config(wpa_s->eapol, &ssid->eap, &eapol_conf);
314#endif /* IEEE8021X_EAPOL */
315}
316
317
318/**
319 * wpa_supplicant_set_non_wpa_policy - Set WPA parameters to non-WPA mode
320 * @wpa_s: Pointer to wpa_supplicant data
321 * @ssid: Configuration data for the network
322 *
323 * This function is used to configure WPA state machine and related parameters
324 * to a mode where WPA is not enabled. This is called as part of the
325 * authentication configuration when the selected network does not use WPA.
326 */
327void wpa_supplicant_set_non_wpa_policy(struct wpa_supplicant *wpa_s,
328 struct wpa_ssid *ssid)
329{
330 int i;
331
ad08c363
JM		 332 if (ssid->key_mgmt & WPA_KEY_MGMT_WPS)
333 wpa_s->key_mgmt = WPA_KEY_MGMT_WPS;
334 else if (ssid->key_mgmt & WPA_KEY_MGMT_IEEE8021X_NO_WPA)
6fc6879b
JM		 335 wpa_s->key_mgmt = WPA_KEY_MGMT_IEEE8021X_NO_WPA;
336 else
337 wpa_s->key_mgmt = WPA_KEY_MGMT_NONE;
338 wpa_sm_set_ap_wpa_ie(wpa_s->wpa, NULL, 0);
339 wpa_sm_set_ap_rsn_ie(wpa_s->wpa, NULL, 0);
340 wpa_sm_set_assoc_wpa_ie(wpa_s->wpa, NULL, 0);
341 wpa_s->pairwise_cipher = WPA_CIPHER_NONE;
342 wpa_s->group_cipher = WPA_CIPHER_NONE;
343 wpa_s->mgmt_group_cipher = 0;
344
345 for (i = 0; i < NUM_WEP_KEYS; i++) {
346 if (ssid->wep_key_len[i] > 5) {
347 wpa_s->pairwise_cipher = WPA_CIPHER_WEP104;
348 wpa_s->group_cipher = WPA_CIPHER_WEP104;
349 break;
350 } else if (ssid->wep_key_len[i] > 0) {
351 wpa_s->pairwise_cipher = WPA_CIPHER_WEP40;
352 wpa_s->group_cipher = WPA_CIPHER_WEP40;
353 break;
354 }
355 }
356
357 wpa_sm_set_param(wpa_s->wpa, WPA_PARAM_RSN_ENABLED, 0);
358 wpa_sm_set_param(wpa_s->wpa, WPA_PARAM_KEY_MGMT, wpa_s->key_mgmt);
359 wpa_sm_set_param(wpa_s->wpa, WPA_PARAM_PAIRWISE,
360 wpa_s->pairwise_cipher);
361 wpa_sm_set_param(wpa_s->wpa, WPA_PARAM_GROUP, wpa_s->group_cipher);
362#ifdef CONFIG_IEEE80211W
363 wpa_sm_set_param(wpa_s->wpa, WPA_PARAM_MGMT_GROUP,
364 wpa_s->mgmt_group_cipher);
365#endif /* CONFIG_IEEE80211W */
366
367 pmksa_cache_clear_current(wpa_s->wpa);
368}
369
370
371static void wpa_supplicant_cleanup(struct wpa_supplicant *wpa_s)
372{
60b94c98 373 bgscan_deinit(wpa_s);
6fc6879b
JM		 374 scard_deinit(wpa_s->scard);
375 wpa_s->scard = NULL;
376 wpa_sm_set_scard_ctx(wpa_s->wpa, NULL);
377 eapol_sm_register_scard_ctx(wpa_s->eapol, NULL);
378 l2_packet_deinit(wpa_s->l2);
379 wpa_s->l2 = NULL;
380 if (wpa_s->l2_br) {
381 l2_packet_deinit(wpa_s->l2_br);
382 wpa_s->l2_br = NULL;
383 }
384
385 if (wpa_s->ctrl_iface) {
386 wpa_supplicant_ctrl_iface_deinit(wpa_s->ctrl_iface);
387 wpa_s->ctrl_iface = NULL;
388 }
389 if (wpa_s->conf != NULL) {
8e56d189
JM		 390 struct wpa_ssid *ssid;
391 for (ssid = wpa_s->conf->ssid; ssid; ssid = ssid->next)
392 wpas_notify_network_removed(wpa_s, ssid);
6fc6879b
JM		 393 wpa_config_free(wpa_s->conf);
394 wpa_s->conf = NULL;
395 }
396
397 os_free(wpa_s->confname);
398 wpa_s->confname = NULL;
399
400 wpa_sm_set_eapol(wpa_s->wpa, NULL);
401 eapol_sm_deinit(wpa_s->eapol);
402 wpa_s->eapol = NULL;
403
404 rsn_preauth_deinit(wpa_s->wpa);
405
281ff0aa
GP		 406#ifdef CONFIG_TDLS
407 wpa_tdls_deinit(wpa_s->wpa);
408#endif /* CONFIG_TDLS */
409
6fc6879b
JM		 410 pmksa_candidate_free(wpa_s->wpa);
411 wpa_sm_deinit(wpa_s->wpa);
412 wpa_s->wpa = NULL;
413 wpa_blacklist_clear(wpa_s);
414
83922c2d 415 wpa_bss_deinit(wpa_s);
6fc6879b
JM		 416
417 wpa_supplicant_cancel_scan(wpa_s);
418 wpa_supplicant_cancel_auth_timeout(wpa_s);
419
420 ieee80211_sta_deinit(wpa_s);
116654ce
JM		 421
422 wpas_wps_deinit(wpa_s);
11ef8d35 423
1ff73338
JM		 424 wpabuf_free(wpa_s->pending_eapol_rx);
425 wpa_s->pending_eapol_rx = NULL;
426
11ef8d35
JM		 427#ifdef CONFIG_IBSS_RSN
428 ibss_rsn_deinit(wpa_s->ibss_rsn);
429 wpa_s->ibss_rsn = NULL;
430#endif /* CONFIG_IBSS_RSN */
c2a04078 431
e29853bb 432 sme_deinit(wpa_s);
2d5b792d
JM		 433
434#ifdef CONFIG_AP
435 wpa_supplicant_ap_deinit(wpa_s);
436#endif /* CONFIG_AP */
b22128ef
JM		 437
438#ifdef CONFIG_P2P
439 wpas_p2p_deinit(wpa_s);
440#endif /* CONFIG_P2P */
f47d639d
JM		 441
442 os_free(wpa_s->next_scan_freqs);
443 wpa_s->next_scan_freqs = NULL;
6fc6879b
JM		 444}
445
446
447/**
448 * wpa_clear_keys - Clear keys configured for the driver
449 * @wpa_s: Pointer to wpa_supplicant data
450 * @addr: Previously used BSSID or %NULL if not available
451 *
452 * This function clears the encryption keys that has been previously configured
453 * for the driver.
454 */
455void wpa_clear_keys(struct wpa_supplicant *wpa_s, const u8 *addr)
456{
6fc6879b
JM		 457 if (wpa_s->keys_cleared) {
458 /* Some drivers (e.g., ndiswrapper & NDIS drivers) seem to have
459 * timing issues with keys being cleared just before new keys
460 * are set or just after association or something similar. This
461 * shows up in group key handshake failing often because of the
462 * client not receiving the first encrypted packets correctly.
463 * Skipping some of the extra key clearing steps seems to help
464 * in completing group key handshake more reliably. */
f049052b
BG		 465 wpa_dbg(wpa_s, MSG_DEBUG, "No keys have been configured - "
466 "skip key clearing");
6fc6879b
JM		 467 return;
468 }
469
470 /* MLME-DELETEKEYS.request */
0382097e
JM		 471 wpa_drv_set_key(wpa_s, WPA_ALG_NONE, NULL, 0, 0, NULL, 0, NULL, 0);
472 wpa_drv_set_key(wpa_s, WPA_ALG_NONE, NULL, 1, 0, NULL, 0, NULL, 0);
473 wpa_drv_set_key(wpa_s, WPA_ALG_NONE, NULL, 2, 0, NULL, 0, NULL, 0);
474 wpa_drv_set_key(wpa_s, WPA_ALG_NONE, NULL, 3, 0, NULL, 0, NULL, 0);
0e27f655 475#ifdef CONFIG_IEEE80211W
0382097e
JM		 476 wpa_drv_set_key(wpa_s, WPA_ALG_NONE, NULL, 4, 0, NULL, 0, NULL, 0);
477 wpa_drv_set_key(wpa_s, WPA_ALG_NONE, NULL, 5, 0, NULL, 0, NULL, 0);
0e27f655 478#endif /* CONFIG_IEEE80211W */
6fc6879b
JM		 479 if (addr) {
480 wpa_drv_set_key(wpa_s, WPA_ALG_NONE, addr, 0, 0, NULL, 0, NULL,
481 0);
482 /* MLME-SETPROTECTION.request(None) */
483 wpa_drv_mlme_setprotection(
484 wpa_s, addr,
485 MLME_SETPROTECTION_PROTECT_TYPE_NONE,
486 MLME_SETPROTECTION_KEY_TYPE_PAIRWISE);
487 }
488 wpa_s->keys_cleared = 1;
489}
490
491
492/**
493 * wpa_supplicant_state_txt - Get the connection state name as a text string
494 * @state: State (wpa_state; WPA_*)
495 * Returns: The state name as a printable text string
496 */
71934751 497const char * wpa_supplicant_state_txt(enum wpa_states state)
6fc6879b
JM		 498{
499 switch (state) {
500 case WPA_DISCONNECTED:
501 return "DISCONNECTED";
502 case WPA_INACTIVE:
503 return "INACTIVE";
8401a6b0
JM		 504 case WPA_INTERFACE_DISABLED:
505 return "INTERFACE_DISABLED";
6fc6879b
JM		 506 case WPA_SCANNING:
507 return "SCANNING";
c2a04078
JM		 508 case WPA_AUTHENTICATING:
509 return "AUTHENTICATING";
6fc6879b
JM		 510 case WPA_ASSOCIATING:
511 return "ASSOCIATING";
512 case WPA_ASSOCIATED:
513 return "ASSOCIATED";
514 case WPA_4WAY_HANDSHAKE:
515 return "4WAY_HANDSHAKE";
516 case WPA_GROUP_HANDSHAKE:
517 return "GROUP_HANDSHAKE";
518 case WPA_COMPLETED:
519 return "COMPLETED";
520 default:
521 return "UNKNOWN";
522 }
523}
524
525
cfe53c9a
PS		 526#ifdef CONFIG_BGSCAN
527
528static void wpa_supplicant_start_bgscan(struct wpa_supplicant *wpa_s)
529{
530 if (wpa_s->current_ssid == wpa_s->bgscan_ssid)
531 return;
532
533 bgscan_deinit(wpa_s);
534 if (wpa_s->current_ssid && wpa_s->current_ssid->bgscan) {
535 if (bgscan_init(wpa_s, wpa_s->current_ssid)) {
536 wpa_dbg(wpa_s, MSG_DEBUG, "Failed to initialize "
537 "bgscan");
538 /*
539 * Live without bgscan; it is only used as a roaming
540 * optimization, so the initial connection is not
541 * affected.
542 */
543 } else
544 wpa_s->bgscan_ssid = wpa_s->current_ssid;
545 } else
546 wpa_s->bgscan_ssid = NULL;
547}
548
549
550static void wpa_supplicant_stop_bgscan(struct wpa_supplicant *wpa_s)
551{
552 if (wpa_s->bgscan_ssid != NULL) {
553 bgscan_deinit(wpa_s);
554 wpa_s->bgscan_ssid = NULL;
555 }
556}
557
558#endif /* CONFIG_BGSCAN */
559
560
6fc6879b
JM		 561/**
562 * wpa_supplicant_set_state - Set current connection state
563 * @wpa_s: Pointer to wpa_supplicant data
564 * @state: The new connection state
565 *
566 * This function is called whenever the connection state changes, e.g.,
567 * association is completed for WPA/WPA2 4-Way Handshake is started.
568 */
71934751
JM		 569void wpa_supplicant_set_state(struct wpa_supplicant *wpa_s,
570 enum wpa_states state)
6fc6879b 571{
27f43d8d
MH		 572 enum wpa_states old_state = wpa_s->wpa_state;
573
f049052b
BG		 574 wpa_dbg(wpa_s, MSG_DEBUG, "State: %s -> %s",
575 wpa_supplicant_state_txt(wpa_s->wpa_state),
576 wpa_supplicant_state_txt(state));
6fc6879b 577
cb8564b1
DW		 578 if (state != WPA_SCANNING)
579 wpa_supplicant_notify_scanning(wpa_s, 0);
580
6fc6879b
JM		 581 if (state == WPA_COMPLETED && wpa_s->new_connection) {
582#if defined(CONFIG_CTRL_IFACE) || !defined(CONFIG_NO_STDOUT_DEBUG)
583 struct wpa_ssid *ssid = wpa_s->current_ssid;
584 wpa_msg(wpa_s, MSG_INFO, WPA_EVENT_CONNECTED "- Connection to "
585 MACSTR " completed %s [id=%d id_str=%s]",
586 MAC2STR(wpa_s->bssid), wpa_s->reassociated_connection ?
587 "(reauth)" : "(auth)",
588 ssid ? ssid->id : -1,
589 ssid && ssid->id_str ? ssid->id_str : "");
590#endif /* CONFIG_CTRL_IFACE || !CONFIG_NO_STDOUT_DEBUG */
591 wpa_s->new_connection = 0;
592 wpa_s->reassociated_connection = 1;
593 wpa_drv_set_operstate(wpa_s, 1);
99ac2913
FF		 594#ifndef IEEE8021X_EAPOL
595 wpa_drv_set_supp_port(wpa_s, 1);
596#endif /* IEEE8021X_EAPOL */
17a4734d 597 wpa_s->after_wps = 0;
b22128ef
JM		 598#ifdef CONFIG_P2P
599 wpas_p2p_completed(wpa_s);
600#endif /* CONFIG_P2P */
6fc6879b
JM		 601 } else if (state == WPA_DISCONNECTED || state == WPA_ASSOCIATING ||
602 state == WPA_ASSOCIATED) {
603 wpa_s->new_connection = 1;
604 wpa_drv_set_operstate(wpa_s, 0);
99ac2913
FF		 605#ifndef IEEE8021X_EAPOL
606 wpa_drv_set_supp_port(wpa_s, 0);
607#endif /* IEEE8021X_EAPOL */
6fc6879b
JM		 608 }
609 wpa_s->wpa_state = state;
27f43d8d 610
cfe53c9a
PS		 611#ifdef CONFIG_BGSCAN
612 if (state == WPA_COMPLETED)
613 wpa_supplicant_start_bgscan(wpa_s);
614 else
615 wpa_supplicant_stop_bgscan(wpa_s);
616#endif /* CONFIG_BGSCAN */
617
5bbf9f10 618 if (wpa_s->wpa_state != old_state) {
27f43d8d 619 wpas_notify_state_changed(wpa_s, wpa_s->wpa_state, old_state);
5bbf9f10
PS		 620
621 if (wpa_s->wpa_state == WPA_COMPLETED ||
622 old_state == WPA_COMPLETED)
623 wpas_notify_auth_changed(wpa_s);
624 }
6fc6879b
JM		 625}
626
627
1a1bf008
JM		 628void wpa_supplicant_terminate_proc(struct wpa_global *global)
629{
630 int pending = 0;
631#ifdef CONFIG_WPS
632 struct wpa_supplicant *wpa_s = global->ifaces;
633 while (wpa_s) {
634 if (wpas_wps_terminate_pending(wpa_s) == 1)
635 pending = 1;
636 wpa_s = wpa_s->next;
637 }
638#endif /* CONFIG_WPS */
639 if (pending)
640 return;
641 eloop_terminate();
642}
643
644
0456ea16 645static void wpa_supplicant_terminate(int sig, void *signal_ctx)
6fc6879b 646{
0456ea16 647 struct wpa_global *global = signal_ctx;
6fc6879b
JM		 648 struct wpa_supplicant *wpa_s;
649 for (wpa_s = global->ifaces; wpa_s; wpa_s = wpa_s->next) {
650 wpa_msg(wpa_s, MSG_INFO, WPA_EVENT_TERMINATING "- signal %d "
651 "received", sig);
652 }
1a1bf008 653 wpa_supplicant_terminate_proc(global);
6fc6879b
JM		 654}
655
656
b22128ef 657void wpa_supplicant_clear_status(struct wpa_supplicant *wpa_s)
6fc6879b 658{
71934751 659 enum wpa_states old_state = wpa_s->wpa_state;
27f43d8d 660
6fc6879b
JM		 661 wpa_s->pairwise_cipher = 0;
662 wpa_s->group_cipher = 0;
663 wpa_s->mgmt_group_cipher = 0;
664 wpa_s->key_mgmt = 0;
8401a6b0
JM		 665 if (wpa_s->wpa_state != WPA_INTERFACE_DISABLED)
666 wpa_s->wpa_state = WPA_DISCONNECTED;
27f43d8d
MH		 667
668 if (wpa_s->wpa_state != old_state)
669 wpas_notify_state_changed(wpa_s, wpa_s->wpa_state, old_state);
6fc6879b
JM		 670}
671
672
673/**
674 * wpa_supplicant_reload_configuration - Reload configuration data
675 * @wpa_s: Pointer to wpa_supplicant data
676 * Returns: 0 on success or -1 if configuration parsing failed
677 *
678 * This function can be used to request that the configuration data is reloaded
679 * (e.g., after configuration file change). This function is reloading
680 * configuration only for one interface, so this may need to be called multiple
681 * times if %wpa_supplicant is controlling multiple interfaces and all
682 * interfaces need reconfiguration.
683 */
684int wpa_supplicant_reload_configuration(struct wpa_supplicant *wpa_s)
685{
686 struct wpa_config *conf;
8bac466b 687 struct wpa_ssid *old_ssid;
6fc6879b 688 int reconf_ctrl;
8bac466b
JM		 689 int old_ap_scan;
690
6fc6879b
JM		 691 if (wpa_s->confname == NULL)
692 return -1;
693 conf = wpa_config_read(wpa_s->confname);
694 if (conf == NULL) {
695 wpa_msg(wpa_s, MSG_ERROR, "Failed to parse the configuration "
696 "file '%s' - exiting", wpa_s->confname);
697 return -1;
698 }
611aea7d 699 conf->changed_parameters = (unsigned int) -1;
6fc6879b
JM		 700
701 reconf_ctrl = !!conf->ctrl_interface != !!wpa_s->conf->ctrl_interface
702 || (conf->ctrl_interface && wpa_s->conf->ctrl_interface &&
703 os_strcmp(conf->ctrl_interface,
704 wpa_s->conf->ctrl_interface) != 0);
705
706 if (reconf_ctrl && wpa_s->ctrl_iface) {
707 wpa_supplicant_ctrl_iface_deinit(wpa_s->ctrl_iface);
708 wpa_s->ctrl_iface = NULL;
709 }
710
711 eapol_sm_invalidate_cached_session(wpa_s->eapol);
8bac466b 712 old_ssid = wpa_s->current_ssid;
6fc6879b 713 wpa_s->current_ssid = NULL;
8bac466b
JM		 714 if (old_ssid != wpa_s->current_ssid)
715 wpas_notify_network_changed(wpa_s);
716
6fc6879b
JM		 717 /*
718 * TODO: should notify EAPOL SM about changes in opensc_engine_path,
719 * pkcs11_engine_path, pkcs11_module_path.
720 */
56586197 721 if (wpa_key_mgmt_wpa_psk(wpa_s->key_mgmt)) {
6fc6879b
JM		 722 /*
723 * Clear forced success to clear EAP state for next
724 * authentication.
725 */
726 eapol_sm_notify_eap_success(wpa_s->eapol, FALSE);
727 }
728 eapol_sm_notify_config(wpa_s->eapol, NULL, NULL);
729 wpa_sm_set_config(wpa_s->wpa, NULL);
730 wpa_sm_set_fast_reauth(wpa_s->wpa, wpa_s->conf->fast_reauth);
731 rsn_preauth_deinit(wpa_s->wpa);
8bac466b
JM		 732
733 old_ap_scan = wpa_s->conf->ap_scan;
6fc6879b
JM		 734 wpa_config_free(wpa_s->conf);
735 wpa_s->conf = conf;
8bac466b
JM		 736 if (old_ap_scan != wpa_s->conf->ap_scan)
737 wpas_notify_ap_scan_changed(wpa_s);
738
6fc6879b
JM		 739 if (reconf_ctrl)
740 wpa_s->ctrl_iface = wpa_supplicant_ctrl_iface_init(wpa_s);
741
611aea7d
JM		 742 wpa_supplicant_update_config(wpa_s);
743
6fc6879b 744 wpa_supplicant_clear_status(wpa_s);
43a38635
JM		 745 if (wpa_supplicant_enabled_networks(wpa_s->conf)) {
746 wpa_s->reassociate = 1;
747 wpa_supplicant_req_scan(wpa_s, 0, 0);
748 }
f049052b 749 wpa_dbg(wpa_s, MSG_DEBUG, "Reconfiguration completed");
6fc6879b
JM		 750 return 0;
751}
752
753
0456ea16 754static void wpa_supplicant_reconfig(int sig, void *signal_ctx)
6fc6879b 755{
0456ea16 756 struct wpa_global *global = signal_ctx;
6fc6879b 757 struct wpa_supplicant *wpa_s;
6fc6879b 758 for (wpa_s = global->ifaces; wpa_s; wpa_s = wpa_s->next) {
f049052b
BG		 759 wpa_dbg(wpa_s, MSG_DEBUG, "Signal %d received - reconfiguring",
760 sig);
6fc6879b 761 if (wpa_supplicant_reload_configuration(wpa_s) < 0) {
1a1bf008 762 wpa_supplicant_terminate_proc(global);
6fc6879b
JM		 763 }
764 }
765}
766
767
508545f3 768enum wpa_cipher cipher_suite2driver(int cipher)
6fc6879b
JM		 769{
770 switch (cipher) {
771 case WPA_CIPHER_NONE:
772 return CIPHER_NONE;
773 case WPA_CIPHER_WEP40:
774 return CIPHER_WEP40;
775 case WPA_CIPHER_WEP104:
776 return CIPHER_WEP104;
777 case WPA_CIPHER_CCMP:
778 return CIPHER_CCMP;
779 case WPA_CIPHER_TKIP:
780 default:
781 return CIPHER_TKIP;
782 }
783}
784
785
508545f3 786enum wpa_key_mgmt key_mgmt2driver(int key_mgmt)
6fc6879b
JM		 787{
788 switch (key_mgmt) {
789 case WPA_KEY_MGMT_NONE:
790 return KEY_MGMT_NONE;
791 case WPA_KEY_MGMT_IEEE8021X_NO_WPA:
792 return KEY_MGMT_802_1X_NO_WPA;
793 case WPA_KEY_MGMT_IEEE8021X:
794 return KEY_MGMT_802_1X;
795 case WPA_KEY_MGMT_WPA_NONE:
796 return KEY_MGMT_WPA_NONE;
797 case WPA_KEY_MGMT_FT_IEEE8021X:
798 return KEY_MGMT_FT_802_1X;
799 case WPA_KEY_MGMT_FT_PSK:
800 return KEY_MGMT_FT_PSK;
56586197
JM		 801 case WPA_KEY_MGMT_IEEE8021X_SHA256:
802 return KEY_MGMT_802_1X_SHA256;
803 case WPA_KEY_MGMT_PSK_SHA256:
804 return KEY_MGMT_PSK_SHA256;
ad08c363
JM		 805 case WPA_KEY_MGMT_WPS:
806 return KEY_MGMT_WPS;
6fc6879b
JM		 807 case WPA_KEY_MGMT_PSK:
808 default:
809 return KEY_MGMT_PSK;
810 }
811}
812
813
814static int wpa_supplicant_suites_from_ai(struct wpa_supplicant *wpa_s,
815 struct wpa_ssid *ssid,
816 struct wpa_ie_data *ie)
817{
818 int ret = wpa_sm_parse_own_wpa_ie(wpa_s->wpa, ie);
819 if (ret) {
820 if (ret == -2) {
821 wpa_msg(wpa_s, MSG_INFO, "WPA: Failed to parse WPA IE "
822 "from association info");
823 }
824 return -1;
825 }
826
f049052b
BG		 827 wpa_dbg(wpa_s, MSG_DEBUG, "WPA: Using WPA IE from AssocReq to set "
828 "cipher suites");
6fc6879b
JM		 829 if (!(ie->group_cipher & ssid->group_cipher)) {
830 wpa_msg(wpa_s, MSG_INFO, "WPA: Driver used disabled group "
831 "cipher 0x%x (mask 0x%x) - reject",
832 ie->group_cipher, ssid->group_cipher);
833 return -1;
834 }
835 if (!(ie->pairwise_cipher & ssid->pairwise_cipher)) {
836 wpa_msg(wpa_s, MSG_INFO, "WPA: Driver used disabled pairwise "
837 "cipher 0x%x (mask 0x%x) - reject",
838 ie->pairwise_cipher, ssid->pairwise_cipher);
839 return -1;
840 }
841 if (!(ie->key_mgmt & ssid->key_mgmt)) {
842 wpa_msg(wpa_s, MSG_INFO, "WPA: Driver used disabled key "
843 "management 0x%x (mask 0x%x) - reject",
844 ie->key_mgmt, ssid->key_mgmt);
845 return -1;
846 }
847
848#ifdef CONFIG_IEEE80211W
0b60b0aa 849 if (!(ie->capabilities & WPA_CAPABILITY_MFPC) &&
70f8cc8e 850 ssid->ieee80211w == MGMT_FRAME_PROTECTION_REQUIRED) {
6fc6879b
JM		 851 wpa_msg(wpa_s, MSG_INFO, "WPA: Driver associated with an AP "
852 "that does not support management frame protection - "
853 "reject");
854 return -1;
855 }
856#endif /* CONFIG_IEEE80211W */
857
858 return 0;
859}
860
861
862/**
863 * wpa_supplicant_set_suites - Set authentication and encryption parameters
864 * @wpa_s: Pointer to wpa_supplicant data
865 * @bss: Scan results for the selected BSS, or %NULL if not available
866 * @ssid: Configuration data for the selected network
867 * @wpa_ie: Buffer for the WPA/RSN IE
868 * @wpa_ie_len: Maximum wpa_ie buffer size on input. This is changed to be the
869 * used buffer length in case the functions returns success.
870 * Returns: 0 on success or -1 on failure
871 *
872 * This function is used to configure authentication and encryption parameters
873 * based on the network configuration and scan result for the selected BSS (if
874 * available).
875 */
876int wpa_supplicant_set_suites(struct wpa_supplicant *wpa_s,
6fa81a3b 877 struct wpa_bss *bss, struct wpa_ssid *ssid,
6fc6879b
JM		 878 u8 *wpa_ie, size_t *wpa_ie_len)
879{
880 struct wpa_ie_data ie;
881 int sel, proto;
882 const u8 *bss_wpa, *bss_rsn;
883
884 if (bss) {
6fa81a3b
JM		 885 bss_wpa = wpa_bss_get_vendor_ie(bss, WPA_IE_VENDOR_TYPE);
886 bss_rsn = wpa_bss_get_ie(bss, WLAN_EID_RSN);
6fc6879b
JM		 887 } else
888 bss_wpa = bss_rsn = NULL;
889
890 if (bss_rsn && (ssid->proto & WPA_PROTO_RSN) &&
891 wpa_parse_wpa_ie(bss_rsn, 2 + bss_rsn[1], &ie) == 0 &&
892 (ie.group_cipher & ssid->group_cipher) &&
893 (ie.pairwise_cipher & ssid->pairwise_cipher) &&
894 (ie.key_mgmt & ssid->key_mgmt)) {
f049052b 895 wpa_dbg(wpa_s, MSG_DEBUG, "RSN: using IEEE 802.11i/D9.0");
6fc6879b
JM		 896 proto = WPA_PROTO_RSN;
897 } else if (bss_wpa && (ssid->proto & WPA_PROTO_WPA) &&
898 wpa_parse_wpa_ie(bss_wpa, 2 +bss_wpa[1], &ie) == 0 &&
899 (ie.group_cipher & ssid->group_cipher) &&
900 (ie.pairwise_cipher & ssid->pairwise_cipher) &&
901 (ie.key_mgmt & ssid->key_mgmt)) {
f049052b 902 wpa_dbg(wpa_s, MSG_DEBUG, "WPA: using IEEE 802.11i/D3.0");
6fc6879b
JM		 903 proto = WPA_PROTO_WPA;
904 } else if (bss) {
905 wpa_msg(wpa_s, MSG_WARNING, "WPA: Failed to select WPA/RSN");
906 return -1;
907 } else {
908 if (ssid->proto & WPA_PROTO_RSN)
909 proto = WPA_PROTO_RSN;
910 else
911 proto = WPA_PROTO_WPA;
912 if (wpa_supplicant_suites_from_ai(wpa_s, ssid, &ie) < 0) {
913 os_memset(&ie, 0, sizeof(ie));
914 ie.group_cipher = ssid->group_cipher;
915 ie.pairwise_cipher = ssid->pairwise_cipher;
916 ie.key_mgmt = ssid->key_mgmt;
917#ifdef CONFIG_IEEE80211W
918 ie.mgmt_group_cipher =
70f8cc8e 919 ssid->ieee80211w != NO_MGMT_FRAME_PROTECTION ?
6fc6879b
JM		 920 WPA_CIPHER_AES_128_CMAC : 0;
921#endif /* CONFIG_IEEE80211W */
f049052b
BG		 922 wpa_dbg(wpa_s, MSG_DEBUG, "WPA: Set cipher suites "
923 "based on configuration");
6fc6879b
JM		 924 } else
925 proto = ie.proto;
926 }
927
f049052b
BG		 928 wpa_dbg(wpa_s, MSG_DEBUG, "WPA: Selected cipher suites: group %d "
929 "pairwise %d key_mgmt %d proto %d",
930 ie.group_cipher, ie.pairwise_cipher, ie.key_mgmt, proto);
6fc6879b
JM		 931#ifdef CONFIG_IEEE80211W
932 if (ssid->ieee80211w) {
f049052b
BG		 933 wpa_dbg(wpa_s, MSG_DEBUG, "WPA: Selected mgmt group cipher %d",
934 ie.mgmt_group_cipher);
6fc6879b
JM		 935 }
936#endif /* CONFIG_IEEE80211W */
937
938 wpa_sm_set_param(wpa_s->wpa, WPA_PARAM_PROTO, proto);
939 wpa_sm_set_param(wpa_s->wpa, WPA_PARAM_RSN_ENABLED,
940 !!(ssid->proto & WPA_PROTO_RSN));
941
942 if (bss || !wpa_s->ap_ies_from_associnfo) {
943 if (wpa_sm_set_ap_wpa_ie(wpa_s->wpa, bss_wpa,
944 bss_wpa ? 2 + bss_wpa[1] : 0) ||
945 wpa_sm_set_ap_rsn_ie(wpa_s->wpa, bss_rsn,
946 bss_rsn ? 2 + bss_rsn[1] : 0))
947 return -1;
948 }
949
950 sel = ie.group_cipher & ssid->group_cipher;
951 if (sel & WPA_CIPHER_CCMP) {
952 wpa_s->group_cipher = WPA_CIPHER_CCMP;
f049052b 953 wpa_dbg(wpa_s, MSG_DEBUG, "WPA: using GTK CCMP");
6fc6879b
JM		 954 } else if (sel & WPA_CIPHER_TKIP) {
955 wpa_s->group_cipher = WPA_CIPHER_TKIP;
f049052b 956 wpa_dbg(wpa_s, MSG_DEBUG, "WPA: using GTK TKIP");
6fc6879b
JM		 957 } else if (sel & WPA_CIPHER_WEP104) {
958 wpa_s->group_cipher = WPA_CIPHER_WEP104;
f049052b 959 wpa_dbg(wpa_s, MSG_DEBUG, "WPA: using GTK WEP104");
6fc6879b
JM		 960 } else if (sel & WPA_CIPHER_WEP40) {
961 wpa_s->group_cipher = WPA_CIPHER_WEP40;
f049052b 962 wpa_dbg(wpa_s, MSG_DEBUG, "WPA: using GTK WEP40");
6fc6879b 963 } else {
f049052b
BG		 964 wpa_msg(wpa_s, MSG_WARNING, "WPA: Failed to select group "
965 "cipher");
6fc6879b
JM		 966 return -1;
967 }
968
969 sel = ie.pairwise_cipher & ssid->pairwise_cipher;
970 if (sel & WPA_CIPHER_CCMP) {
971 wpa_s->pairwise_cipher = WPA_CIPHER_CCMP;
f049052b 972 wpa_dbg(wpa_s, MSG_DEBUG, "WPA: using PTK CCMP");
6fc6879b
JM		 973 } else if (sel & WPA_CIPHER_TKIP) {
974 wpa_s->pairwise_cipher = WPA_CIPHER_TKIP;
f049052b 975 wpa_dbg(wpa_s, MSG_DEBUG, "WPA: using PTK TKIP");
6fc6879b
JM		 976 } else if (sel & WPA_CIPHER_NONE) {
977 wpa_s->pairwise_cipher = WPA_CIPHER_NONE;
f049052b 978 wpa_dbg(wpa_s, MSG_DEBUG, "WPA: using PTK NONE");
6fc6879b 979 } else {
f049052b
BG		 980 wpa_msg(wpa_s, MSG_WARNING, "WPA: Failed to select pairwise "
981 "cipher");
6fc6879b
JM		 982 return -1;
983 }
984
985 sel = ie.key_mgmt & ssid->key_mgmt;
986 if (0) {
987#ifdef CONFIG_IEEE80211R
988 } else if (sel & WPA_KEY_MGMT_FT_IEEE8021X) {
989 wpa_s->key_mgmt = WPA_KEY_MGMT_FT_IEEE8021X;
f049052b 990 wpa_dbg(wpa_s, MSG_DEBUG, "WPA: using KEY_MGMT FT/802.1X");
6fc6879b
JM		 991 } else if (sel & WPA_KEY_MGMT_FT_PSK) {
992 wpa_s->key_mgmt = WPA_KEY_MGMT_FT_PSK;
f049052b 993 wpa_dbg(wpa_s, MSG_DEBUG, "WPA: using KEY_MGMT FT/PSK");
6fc6879b 994#endif /* CONFIG_IEEE80211R */
56586197
JM		 995#ifdef CONFIG_IEEE80211W
996 } else if (sel & WPA_KEY_MGMT_IEEE8021X_SHA256) {
997 wpa_s->key_mgmt = WPA_KEY_MGMT_IEEE8021X_SHA256;
f049052b 998 wpa_dbg(wpa_s, MSG_DEBUG,
56586197
JM		 999 "WPA: using KEY_MGMT 802.1X with SHA256");
1000 } else if (sel & WPA_KEY_MGMT_PSK_SHA256) {
1001 wpa_s->key_mgmt = WPA_KEY_MGMT_PSK_SHA256;
f049052b 1002 wpa_dbg(wpa_s, MSG_DEBUG,
56586197
JM		 1003 "WPA: using KEY_MGMT PSK with SHA256");
1004#endif /* CONFIG_IEEE80211W */
6fc6879b
JM		 1005 } else if (sel & WPA_KEY_MGMT_IEEE8021X) {
1006 wpa_s->key_mgmt = WPA_KEY_MGMT_IEEE8021X;
f049052b 1007 wpa_dbg(wpa_s, MSG_DEBUG, "WPA: using KEY_MGMT 802.1X");
6fc6879b
JM		 1008 } else if (sel & WPA_KEY_MGMT_PSK) {
1009 wpa_s->key_mgmt = WPA_KEY_MGMT_PSK;
f049052b 1010 wpa_dbg(wpa_s, MSG_DEBUG, "WPA: using KEY_MGMT WPA-PSK");
6fc6879b
JM		 1011 } else if (sel & WPA_KEY_MGMT_WPA_NONE) {
1012 wpa_s->key_mgmt = WPA_KEY_MGMT_WPA_NONE;
f049052b 1013 wpa_dbg(wpa_s, MSG_DEBUG, "WPA: using KEY_MGMT WPA-NONE");
6fc6879b 1014 } else {
f049052b
BG		 1015 wpa_msg(wpa_s, MSG_WARNING, "WPA: Failed to select "
1016 "authenticated key management type");
6fc6879b
JM		 1017 return -1;
1018 }
1019
1020 wpa_sm_set_param(wpa_s->wpa, WPA_PARAM_KEY_MGMT, wpa_s->key_mgmt);
1021 wpa_sm_set_param(wpa_s->wpa, WPA_PARAM_PAIRWISE,
1022 wpa_s->pairwise_cipher);
1023 wpa_sm_set_param(wpa_s->wpa, WPA_PARAM_GROUP, wpa_s->group_cipher);
1024
1025#ifdef CONFIG_IEEE80211W
1026 sel = ie.mgmt_group_cipher;
70f8cc8e 1027 if (ssid->ieee80211w == NO_MGMT_FRAME_PROTECTION ||
0b60b0aa 1028 !(ie.capabilities & WPA_CAPABILITY_MFPC))
6fc6879b
JM		 1029 sel = 0;
1030 if (sel & WPA_CIPHER_AES_128_CMAC) {
1031 wpa_s->mgmt_group_cipher = WPA_CIPHER_AES_128_CMAC;
f049052b 1032 wpa_dbg(wpa_s, MSG_DEBUG, "WPA: using MGMT group cipher "
6fc6879b
JM		 1033 "AES-128-CMAC");
1034 } else {
1035 wpa_s->mgmt_group_cipher = 0;
f049052b 1036 wpa_dbg(wpa_s, MSG_DEBUG, "WPA: not using MGMT group cipher");
6fc6879b
JM		 1037 }
1038 wpa_sm_set_param(wpa_s->wpa, WPA_PARAM_MGMT_GROUP,
1039 wpa_s->mgmt_group_cipher);
e820cf95 1040 wpa_sm_set_param(wpa_s->wpa, WPA_PARAM_MFP, ssid->ieee80211w);
6fc6879b
JM		 1041#endif /* CONFIG_IEEE80211W */
1042
1043 if (wpa_sm_set_assoc_wpa_ie_default(wpa_s->wpa, wpa_ie, wpa_ie_len)) {
f049052b 1044 wpa_msg(wpa_s, MSG_WARNING, "WPA: Failed to generate WPA IE");
6fc6879b
JM		 1045 return -1;
1046 }
1047
56586197
JM		 1048 if (ssid->key_mgmt &
1049 (WPA_KEY_MGMT_PSK | WPA_KEY_MGMT_FT_PSK | WPA_KEY_MGMT_PSK_SHA256))
6fc6879b
JM		 1050 wpa_sm_set_pmk(wpa_s->wpa, ssid->psk, PMK_LEN);
1051 else
1052 wpa_sm_set_pmk_from_pmksa(wpa_s->wpa);
1053
1054 return 0;
1055}
1056
1057
1058/**
1059 * wpa_supplicant_associate - Request association
1060 * @wpa_s: Pointer to wpa_supplicant data
1061 * @bss: Scan results for the selected BSS, or %NULL if not available
1062 * @ssid: Configuration data for the selected network
1063 *
1064 * This function is used to request %wpa_supplicant to associate with a BSS.
1065 */
1066void wpa_supplicant_associate(struct wpa_supplicant *wpa_s,
6fa81a3b 1067 struct wpa_bss *bss, struct wpa_ssid *ssid)
6fc6879b 1068{
5f3a6aa0 1069 u8 wpa_ie[200];
6fc6879b 1070 size_t wpa_ie_len;
8bac466b 1071 int use_crypt, ret, i, bssid_changed;
abd9fafa 1072 int algs = WPA_AUTH_ALG_OPEN;
71934751 1073 enum wpa_cipher cipher_pairwise, cipher_group;
6fc6879b
JM		 1074 struct wpa_driver_associate_params params;
1075 int wep_keys_set = 0;
1076 struct wpa_driver_capa capa;
1077 int assoc_failed = 0;
8bac466b 1078 struct wpa_ssid *old_ssid;
6fc6879b 1079
78177a00
JM		 1080#ifdef CONFIG_IBSS_RSN
1081 ibss_rsn_deinit(wpa_s->ibss_rsn);
1082 wpa_s->ibss_rsn = NULL;
1083#endif /* CONFIG_IBSS_RSN */
1084
2c5d725c
JM		 1085 if (ssid->mode == WPAS_MODE_AP || ssid->mode == WPAS_MODE_P2P_GO ||
1086 ssid->mode == WPAS_MODE_P2P_GROUP_FORMATION) {
1581b38b
JM		 1087#ifdef CONFIG_AP
1088 if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_AP)) {
f049052b
BG		 1089 wpa_msg(wpa_s, MSG_INFO, "Driver does not support AP "
1090 "mode");
1581b38b
JM		 1091 return;
1092 }
1093 wpa_supplicant_create_ap(wpa_s, ssid);
8f770587 1094 wpa_s->current_bss = bss;
1581b38b 1095#else /* CONFIG_AP */
f049052b
BG		 1096 wpa_msg(wpa_s, MSG_ERROR, "AP mode support not included in "
1097 "the build");
1581b38b
JM		 1098#endif /* CONFIG_AP */
1099 return;
1100 }
1101
52c9e6f3 1102#ifdef CONFIG_TDLS
95cb2d88
JM		 1103 if (bss)
1104 wpa_tdls_ap_ies(wpa_s->wpa, (const u8 *) (bss + 1),
1105 bss->ie_len);
52c9e6f3
JM		 1106#endif /* CONFIG_TDLS */
1107
5cc4d64b
JM		 1108 if ((wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME) &&
1109 ssid->mode == IEEE80211_MODE_INFRA) {
c2a04078
JM		 1110 sme_authenticate(wpa_s, bss, ssid);
1111 return;
1112 }
1113
0c80427d 1114 os_memset(&params, 0, sizeof(params));
6fc6879b
JM		 1115 wpa_s->reassociate = 0;
1116 if (bss) {
1117#ifdef CONFIG_IEEE80211R
6fa81a3b 1118 const u8 *ie, *md = NULL;
6fc6879b 1119#endif /* CONFIG_IEEE80211R */
6fc6879b
JM		 1120 wpa_msg(wpa_s, MSG_INFO, "Trying to associate with " MACSTR
1121 " (SSID='%s' freq=%d MHz)", MAC2STR(bss->bssid),
6fa81a3b 1122 wpa_ssid_txt(bss->ssid, bss->ssid_len), bss->freq);
8bac466b 1123 bssid_changed = !is_zero_ether_addr(wpa_s->bssid);
6fc6879b
JM		 1124 os_memset(wpa_s->bssid, 0, ETH_ALEN);
1125 os_memcpy(wpa_s->pending_bssid, bss->bssid, ETH_ALEN);
8bac466b
JM		 1126 if (bssid_changed)
1127 wpas_notify_bssid_changed(wpa_s);
6fc6879b 1128#ifdef CONFIG_IEEE80211R
6fa81a3b 1129 ie = wpa_bss_get_ie(bss, WLAN_EID_MOBILITY_DOMAIN);
6fc6879b
JM		 1130 if (ie && ie[1] >= MOBILITY_DOMAIN_ID_LEN)
1131 md = ie + 2;
e7846b68 1132 wpa_sm_set_ft_params(wpa_s->wpa, ie, ie ? 2 + ie[1] : 0);
91a05482
JM		 1133 if (md) {
1134 /* Prepare for the next transition */
76b7981d 1135 wpa_ft_prepare_auth_request(wpa_s->wpa, ie);
91a05482 1136 }
6fc6879b 1137#endif /* CONFIG_IEEE80211R */
24c23d1b
JM		 1138#ifdef CONFIG_WPS
1139 } else if ((ssid->ssid == NULL || ssid->ssid_len == 0) &&
1140 wpa_s->conf->ap_scan == 2 &&
1141 (ssid->key_mgmt & WPA_KEY_MGMT_WPS)) {
1142 /* Use ap_scan==1 style network selection to find the network
1143 */
1144 wpa_s->scan_req = 2;
1145 wpa_s->reassociate = 1;
1146 wpa_supplicant_req_scan(wpa_s, 0, 0);
1147 return;
1148#endif /* CONFIG_WPS */
6fc6879b
JM		 1149 } else {
1150 wpa_msg(wpa_s, MSG_INFO, "Trying to associate with SSID '%s'",
1151 wpa_ssid_txt(ssid->ssid, ssid->ssid_len));
1152 os_memset(wpa_s->pending_bssid, 0, ETH_ALEN);
1153 }
1154 wpa_supplicant_cancel_scan(wpa_s);
1155
1156 /* Starting new association, so clear the possibly used WPA IE from the
1157 * previous association. */
1158 wpa_sm_set_assoc_wpa_ie(wpa_s->wpa, NULL, 0);
1159
1160#ifdef IEEE8021X_EAPOL
1161 if (ssid->key_mgmt & WPA_KEY_MGMT_IEEE8021X_NO_WPA) {
1162 if (ssid->leap) {
1163 if (ssid->non_leap == 0)
abd9fafa 1164 algs = WPA_AUTH_ALG_LEAP;
6fc6879b 1165 else
abd9fafa 1166 algs |= WPA_AUTH_ALG_LEAP;
6fc6879b
JM		 1167 }
1168 }
1169#endif /* IEEE8021X_EAPOL */
f049052b 1170 wpa_dbg(wpa_s, MSG_DEBUG, "Automatic auth_alg selection: 0x%x", algs);
6fc6879b 1171 if (ssid->auth_alg) {
abd9fafa 1172 algs = ssid->auth_alg;
f049052b
BG		 1173 wpa_dbg(wpa_s, MSG_DEBUG, "Overriding auth_alg selection: "
1174 "0x%x", algs);
6fc6879b 1175 }
6fc6879b 1176
6fa81a3b
JM		 1177 if (bss && (wpa_bss_get_vendor_ie(bss, WPA_IE_VENDOR_TYPE) ||
1178 wpa_bss_get_ie(bss, WLAN_EID_RSN)) &&
6fc6879b
JM		 1179 (ssid->key_mgmt & (WPA_KEY_MGMT_IEEE8021X | WPA_KEY_MGMT_PSK |
1180 WPA_KEY_MGMT_FT_IEEE8021X |
56586197
JM		 1181 WPA_KEY_MGMT_FT_PSK |
1182 WPA_KEY_MGMT_IEEE8021X_SHA256 |
1183 WPA_KEY_MGMT_PSK_SHA256))) {
6fc6879b
JM		 1184 int try_opportunistic;
1185 try_opportunistic = ssid->proactive_key_caching &&
1186 (ssid->proto & WPA_PROTO_RSN);
1187 if (pmksa_cache_set_current(wpa_s->wpa, NULL, bss->bssid,
1188 wpa_s->current_ssid,
1189 try_opportunistic) == 0)
1190 eapol_sm_notify_pmkid_attempt(wpa_s->eapol, 1);
1191 wpa_ie_len = sizeof(wpa_ie);
1192 if (wpa_supplicant_set_suites(wpa_s, bss, ssid,
1193 wpa_ie, &wpa_ie_len)) {
f049052b
BG		 1194 wpa_msg(wpa_s, MSG_WARNING, "WPA: Failed to set WPA "
1195 "key management and encryption suites");
6fc6879b
JM		 1196 return;
1197 }
1198 } else if (ssid->key_mgmt &
1199 (WPA_KEY_MGMT_PSK | WPA_KEY_MGMT_IEEE8021X |
1200 WPA_KEY_MGMT_WPA_NONE | WPA_KEY_MGMT_FT_PSK |
56586197
JM		 1201 WPA_KEY_MGMT_FT_IEEE8021X | WPA_KEY_MGMT_PSK_SHA256 |
1202 WPA_KEY_MGMT_IEEE8021X_SHA256)) {
6fc6879b
JM		 1203 wpa_ie_len = sizeof(wpa_ie);
1204 if (wpa_supplicant_set_suites(wpa_s, NULL, ssid,
1205 wpa_ie, &wpa_ie_len)) {
f049052b
BG		 1206 wpa_msg(wpa_s, MSG_WARNING, "WPA: Failed to set WPA "
1207 "key management and encryption suites (no "
1208 "scan results)");
6fc6879b
JM		 1209 return;
1210 }
ad08c363
JM		 1211#ifdef CONFIG_WPS
1212 } else if (ssid->key_mgmt & WPA_KEY_MGMT_WPS) {
b01c18a8
JM		 1213 struct wpabuf *wps_ie;
1214 wps_ie = wps_build_assoc_req_ie(wpas_wps_get_req_type(ssid));
ad08c363
JM		 1215 if (wps_ie && wpabuf_len(wps_ie) <= sizeof(wpa_ie)) {
1216 wpa_ie_len = wpabuf_len(wps_ie);
1217 os_memcpy(wpa_ie, wpabuf_head(wps_ie), wpa_ie_len);
24386985
JM		 1218 } else
1219 wpa_ie_len = 0;
ad08c363
JM		 1220 wpabuf_free(wps_ie);
1221 wpa_supplicant_set_non_wpa_policy(wpa_s, ssid);
0c80427d
JM		 1222 if (!bss || (bss->caps & IEEE80211_CAP_PRIVACY))
1223 params.wps = WPS_MODE_PRIVACY;
1224 else
1225 params.wps = WPS_MODE_OPEN;
ad08c363 1226#endif /* CONFIG_WPS */
6fc6879b
JM		 1227 } else {
1228 wpa_supplicant_set_non_wpa_policy(wpa_s, ssid);
1229 wpa_ie_len = 0;
1230 }
1231
5f3a6aa0
JM		 1232#ifdef CONFIG_P2P
1233 if (wpa_s->global->p2p) {
1234 u8 *pos;
1235 size_t len;
1236 int res;
1237 int p2p_group;
1238 p2p_group = wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_CAPABLE;
1239 pos = wpa_ie + wpa_ie_len;
1240 len = sizeof(wpa_ie) - wpa_ie_len;
4c08c0bd 1241 res = wpas_p2p_assoc_req_ie(wpa_s, bss, pos, len, p2p_group);
5f3a6aa0
JM		 1242 if (res >= 0)
1243 wpa_ie_len += res;
1244 }
72044390
JM		 1245
1246 wpa_s->cross_connect_disallowed = 0;
1247 if (bss) {
1248 struct wpabuf *p2p;
1249 p2p = wpa_bss_get_vendor_ie_multi(bss, P2P_IE_VENDOR_TYPE);
1250 if (p2p) {
1251 wpa_s->cross_connect_disallowed =
1252 p2p_get_cross_connect_disallowed(p2p);
1253 wpabuf_free(p2p);
f049052b
BG		 1254 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: WLAN AP %s cross "
1255 "connection",
1256 wpa_s->cross_connect_disallowed ?
1257 "disallows" : "allows");
72044390
JM		 1258 }
1259 }
5f3a6aa0
JM		 1260#endif /* CONFIG_P2P */
1261
6fc6879b
JM		 1262 wpa_clear_keys(wpa_s, bss ? bss->bssid : NULL);
1263 use_crypt = 1;
1264 cipher_pairwise = cipher_suite2driver(wpa_s->pairwise_cipher);
1265 cipher_group = cipher_suite2driver(wpa_s->group_cipher);
1266 if (wpa_s->key_mgmt == WPA_KEY_MGMT_NONE ||
1267 wpa_s->key_mgmt == WPA_KEY_MGMT_IEEE8021X_NO_WPA) {
1268 if (wpa_s->key_mgmt == WPA_KEY_MGMT_NONE)
1269 use_crypt = 0;
1270 if (wpa_set_wep_keys(wpa_s, ssid)) {
1271 use_crypt = 1;
1272 wep_keys_set = 1;
1273 }
1274 }
ad08c363
JM		 1275 if (wpa_s->key_mgmt == WPA_KEY_MGMT_WPS)
1276 use_crypt = 0;
6fc6879b
JM		 1277
1278#ifdef IEEE8021X_EAPOL
1279 if (wpa_s->key_mgmt == WPA_KEY_MGMT_IEEE8021X_NO_WPA) {
1280 if ((ssid->eapol_flags &
1281 (EAPOL_FLAG_REQUIRE_KEY_UNICAST |
1282 EAPOL_FLAG_REQUIRE_KEY_BROADCAST)) == 0 &&
1283 !wep_keys_set) {
1284 use_crypt = 0;
1285 } else {
1286 /* Assume that dynamic WEP-104 keys will be used and
1287 * set cipher suites in order for drivers to expect
1288 * encryption. */
1289 cipher_pairwise = cipher_group = CIPHER_WEP104;
1290 }
1291 }
1292#endif /* IEEE8021X_EAPOL */
1293
1294 if (wpa_s->key_mgmt == WPA_KEY_MGMT_WPA_NONE) {
1295 /* Set the key before (and later after) association */
1296 wpa_supplicant_set_wpa_none_key(wpa_s, ssid);
1297 }
1298
6fc6879b 1299 wpa_supplicant_set_state(wpa_s, WPA_ASSOCIATING);
6fc6879b 1300 if (bss) {
6fc6879b 1301 params.bssid = bss->bssid;
6fa81a3b
JM		 1302 params.ssid = bss->ssid;
1303 params.ssid_len = bss->ssid_len;
6fc6879b
JM		 1304 params.freq = bss->freq;
1305 } else {
1306 params.ssid = ssid->ssid;
1307 params.ssid_len = ssid->ssid_len;
1308 }
d7dcba70
JM		 1309 if (ssid->mode == WPAS_MODE_IBSS && ssid->frequency > 0 &&
1310 params.freq == 0)
6fc6879b
JM		 1311 params.freq = ssid->frequency; /* Initial channel for IBSS */
1312 params.wpa_ie = wpa_ie;
1313 params.wpa_ie_len = wpa_ie_len;
1314 params.pairwise_suite = cipher_pairwise;
1315 params.group_suite = cipher_group;
1316 params.key_mgmt_suite = key_mgmt2driver(wpa_s->key_mgmt);
1317 params.auth_alg = algs;
1318 params.mode = ssid->mode;
1319 for (i = 0; i < NUM_WEP_KEYS; i++) {
1320 if (ssid->wep_key_len[i])
1321 params.wep_key[i] = ssid->wep_key[i];
1322 params.wep_key_len[i] = ssid->wep_key_len[i];
1323 }
1324 params.wep_tx_keyidx = ssid->wep_tx_keyidx;
1325
c2a04078 1326 if ((wpa_s->drv_flags & WPA_DRIVER_FLAGS_4WAY_HANDSHAKE) &&
6fc6879b
JM		 1327 (params.key_mgmt_suite == KEY_MGMT_PSK ||
1328 params.key_mgmt_suite == KEY_MGMT_FT_PSK)) {
1329 params.passphrase = ssid->passphrase;
1330 if (ssid->psk_set)
1331 params.psk = ssid->psk;
1332 }
1333
36b15723
JM		 1334 params.drop_unencrypted = use_crypt;
1335
6fc6879b 1336#ifdef CONFIG_IEEE80211W
70f8cc8e
JM		 1337 params.mgmt_frame_protection = ssid->ieee80211w;
1338 if (ssid->ieee80211w != NO_MGMT_FRAME_PROTECTION && bss) {
6fa81a3b 1339 const u8 *rsn = wpa_bss_get_ie(bss, WLAN_EID_RSN);
97d3497e
JM		 1340 struct wpa_ie_data ie;
1341 if (rsn && wpa_parse_wpa_ie(rsn, 2 + rsn[1], &ie) == 0 &&
1342 ie.capabilities &
1343 (WPA_CAPABILITY_MFPC | WPA_CAPABILITY_MFPR)) {
f049052b
BG		 1344 wpa_dbg(wpa_s, MSG_DEBUG, "WPA: Selected AP supports "
1345 "MFP: require MFP");
97d3497e
JM		 1346 params.mgmt_frame_protection =
1347 MGMT_FRAME_PROTECTION_REQUIRED;
1348 }
1349 }
6fc6879b
JM		 1350#endif /* CONFIG_IEEE80211W */
1351
6e3f4b89
JM		 1352#ifdef CONFIG_P2P
1353 if (wpa_s->global->p2p &&
1354 (wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_CAPABLE))
1355 params.p2p = 1;
1356#endif /* CONFIG_P2P */
1357
eea2fd9e
JM		 1358 if (wpa_s->parent->set_sta_uapsd)
1359 params.uapsd = wpa_s->parent->sta_uapsd;
1360 else
1361 params.uapsd = -1;
1362
c2a04078 1363 if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_USER_SPACE_MLME)
6fc6879b
JM		 1364 ret = ieee80211_sta_associate(wpa_s, &params);
1365 else
1366 ret = wpa_drv_associate(wpa_s, &params);
1367 if (ret < 0) {
1368 wpa_msg(wpa_s, MSG_INFO, "Association request to the driver "
1369 "failed");
871f4dd0
JM		 1370 if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_SANE_ERROR_CODES) {
1371 /*
1372 * The driver is known to mean what is saying, so we
1373 * can stop right here; the association will not
1374 * succeed.
1375 */
1376 wpas_connection_failed(wpa_s, wpa_s->pending_bssid);
1377 os_memset(wpa_s->pending_bssid, 0, ETH_ALEN);
1378 return;
1379 }
6fc6879b
JM		 1380 /* try to continue anyway; new association will be tried again
1381 * after timeout */
1382 assoc_failed = 1;
1383 }
1384
1385 if (wpa_s->key_mgmt == WPA_KEY_MGMT_WPA_NONE) {
1386 /* Set the key after the association just in case association
1387 * cleared the previously configured key. */
1388 wpa_supplicant_set_wpa_none_key(wpa_s, ssid);
1389 /* No need to timeout authentication since there is no key
1390 * management. */
1391 wpa_supplicant_cancel_auth_timeout(wpa_s);
1392 wpa_supplicant_set_state(wpa_s, WPA_COMPLETED);
53895c3b 1393#ifdef CONFIG_IBSS_RSN
d7dcba70 1394 } else if (ssid->mode == WPAS_MODE_IBSS &&
53895c3b
JM		 1395 wpa_s->key_mgmt != WPA_KEY_MGMT_NONE &&
1396 wpa_s->key_mgmt != WPA_KEY_MGMT_WPA_NONE) {
1397 /*
1398 * RSN IBSS authentication is per-STA and we can disable the
1399 * per-BSSID authentication.
1400 */
1401 wpa_supplicant_cancel_auth_timeout(wpa_s);
53895c3b 1402#endif /* CONFIG_IBSS_RSN */
6fc6879b
JM		 1403 } else {
1404 /* Timeout for IEEE 802.11 authentication and association */
1d3c75b3
DW		 1405 int timeout = 60;
1406
1407 if (assoc_failed) {
1408 /* give IBSS a bit more time */
d7dcba70 1409 timeout = ssid->mode == WPAS_MODE_IBSS ? 10 : 5;
1d3c75b3
DW		 1410 } else if (wpa_s->conf->ap_scan == 1) {
1411 /* give IBSS a bit more time */
d7dcba70 1412 timeout = ssid->mode == WPAS_MODE_IBSS ? 20 : 10;
1d3c75b3 1413 }
6fc6879b
JM		 1414 wpa_supplicant_req_auth_timeout(wpa_s, timeout, 0);
1415 }
1416
1417 if (wep_keys_set && wpa_drv_get_capa(wpa_s, &capa) == 0 &&
1418 capa.flags & WPA_DRIVER_FLAGS_SET_KEYS_AFTER_ASSOC) {
1419 /* Set static WEP keys again */
1420 wpa_set_wep_keys(wpa_s, ssid);
1421 }
1422
1423 if (wpa_s->current_ssid && wpa_s->current_ssid != ssid) {
1424 /*
1425 * Do not allow EAP session resumption between different
1426 * network configurations.
1427 */
1428 eapol_sm_invalidate_cached_session(wpa_s->eapol);
1429 }
8bac466b 1430 old_ssid = wpa_s->current_ssid;
6fc6879b 1431 wpa_s->current_ssid = ssid;
8f770587 1432 wpa_s->current_bss = bss;
6fc6879b
JM		 1433 wpa_supplicant_rsn_supp_set_config(wpa_s, wpa_s->current_ssid);
1434 wpa_supplicant_initiate_eapol(wpa_s);
8bac466b
JM		 1435 if (old_ssid != wpa_s->current_ssid)
1436 wpas_notify_network_changed(wpa_s);
6fc6879b
JM		 1437}
1438
1439
09f58c09
JM		 1440static void wpa_supplicant_clear_connection(struct wpa_supplicant *wpa_s,
1441 const u8 *addr)
1442{
1443 struct wpa_ssid *old_ssid;
1444
1445 wpa_clear_keys(wpa_s, addr);
1446 wpa_supplicant_mark_disassoc(wpa_s);
1447 old_ssid = wpa_s->current_ssid;
1448 wpa_s->current_ssid = NULL;
1449 wpa_s->current_bss = NULL;
1450 wpa_sm_set_config(wpa_s->wpa, NULL);
1451 eapol_sm_notify_config(wpa_s->eapol, NULL, NULL);
1452 if (old_ssid != wpa_s->current_ssid)
1453 wpas_notify_network_changed(wpa_s);
1454 eloop_cancel_timeout(wpa_supplicant_timeout, wpa_s, NULL);
1455}
1456
1457
6fc6879b
JM		 1458/**
1459 * wpa_supplicant_disassociate - Disassociate the current connection
1460 * @wpa_s: Pointer to wpa_supplicant data
1461 * @reason_code: IEEE 802.11 reason code for the disassociate frame
1462 *
1463 * This function is used to request %wpa_supplicant to disassociate with the
1464 * current AP.
1465 */
1466void wpa_supplicant_disassociate(struct wpa_supplicant *wpa_s,
1467 int reason_code)
1468{
1469 u8 *addr = NULL;
8bac466b 1470
a8e16edc 1471 if (!is_zero_ether_addr(wpa_s->bssid)) {
c2a04078 1472 if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_USER_SPACE_MLME)
6fc6879b
JM		 1473 ieee80211_sta_disassociate(wpa_s, reason_code);
1474 else
1475 wpa_drv_disassociate(wpa_s, wpa_s->bssid, reason_code);
1476 addr = wpa_s->bssid;
1477 }
09f58c09
JM		 1478
1479 wpa_supplicant_clear_connection(wpa_s, addr);
6fc6879b
JM		 1480}
1481
1482
1483/**
1484 * wpa_supplicant_deauthenticate - Deauthenticate the current connection
1485 * @wpa_s: Pointer to wpa_supplicant data
1486 * @reason_code: IEEE 802.11 reason code for the deauthenticate frame
1487 *
073ab58f 1488 * This function is used to request %wpa_supplicant to deauthenticate from the
6fc6879b
JM		 1489 * current AP.
1490 */
1491void wpa_supplicant_deauthenticate(struct wpa_supplicant *wpa_s,
1492 int reason_code)
1493{
1494 u8 *addr = NULL;
8bac466b 1495
a8e16edc 1496 if (!is_zero_ether_addr(wpa_s->bssid)) {
c2a04078 1497 if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_USER_SPACE_MLME)
6fc6879b
JM		 1498 ieee80211_sta_deauthenticate(wpa_s, reason_code);
1499 else
1500 wpa_drv_deauthenticate(wpa_s, wpa_s->bssid,
1501 reason_code);
1502 addr = wpa_s->bssid;
1503 }
09f58c09
JM		 1504
1505 wpa_supplicant_clear_connection(wpa_s, addr);
6fc6879b
JM		 1506}
1507
1508
86b89452
WS		 1509/**
1510 * wpa_supplicant_enable_network - Mark a configured network as enabled
1511 * @wpa_s: wpa_supplicant structure for a network interface
1512 * @ssid: wpa_ssid structure for a configured network or %NULL
1513 *
1514 * Enables the specified network or all networks if no network specified.
1515 */
1516void wpa_supplicant_enable_network(struct wpa_supplicant *wpa_s,
1517 struct wpa_ssid *ssid)
1518{
1519 struct wpa_ssid *other_ssid;
1520 int was_disabled;
1521
1522 if (ssid == NULL) {
4dac0245
JM		 1523 for (other_ssid = wpa_s->conf->ssid; other_ssid;
1524 other_ssid = other_ssid->next) {
1525 if (other_ssid->disabled == 2)
1526 continue; /* do not change persistent P2P group
1527 * data */
86b89452
WS		 1528 if (other_ssid == wpa_s->current_ssid &&
1529 other_ssid->disabled)
1530 wpa_s->reassociate = 1;
1531
1532 was_disabled = other_ssid->disabled;
1533
1534 other_ssid->disabled = 0;
1535
1536 if (was_disabled != other_ssid->disabled)
1537 wpas_notify_network_enabled_changed(
1538 wpa_s, other_ssid);
86b89452
WS		 1539 }
1540 if (wpa_s->reassociate)
1541 wpa_supplicant_req_scan(wpa_s, 0, 0);
4dac0245 1542 } else if (ssid->disabled && ssid->disabled != 2) {
adc8d4a7
KM		 1543 if (wpa_s->current_ssid == NULL) {
1544 /*
1545 * Try to reassociate since there is no current
1546 * configuration and a new network was made available.
1547 */
1548 wpa_s->reassociate = 1;
1549 wpa_supplicant_req_scan(wpa_s, 0, 0);
1550 }
86b89452
WS		 1551
1552 was_disabled = ssid->disabled;
1553
1554 ssid->disabled = 0;
1555
1556 if (was_disabled != ssid->disabled)
1557 wpas_notify_network_enabled_changed(wpa_s, ssid);
1558 }
1559}
1560
1561
1562/**
1563 * wpa_supplicant_disable_network - Mark a configured network as disabled
1564 * @wpa_s: wpa_supplicant structure for a network interface
1565 * @ssid: wpa_ssid structure for a configured network or %NULL
1566 *
1567 * Disables the specified network or all networks if no network specified.
1568 */
1569void wpa_supplicant_disable_network(struct wpa_supplicant *wpa_s,
1570 struct wpa_ssid *ssid)
1571{
1572 struct wpa_ssid *other_ssid;
1573 int was_disabled;
1574
1575 if (ssid == NULL) {
4dac0245
JM		 1576 for (other_ssid = wpa_s->conf->ssid; other_ssid;
1577 other_ssid = other_ssid->next) {
86b89452 1578 was_disabled = other_ssid->disabled;
4dac0245
JM		 1579 if (was_disabled == 2)
1580 continue; /* do not change persistent P2P group
1581 * data */
86b89452
WS		 1582
1583 other_ssid->disabled = 1;
1584
1585 if (was_disabled != other_ssid->disabled)
1586 wpas_notify_network_enabled_changed(
1587 wpa_s, other_ssid);
86b89452
WS		 1588 }
1589 if (wpa_s->current_ssid)
1590 wpa_supplicant_disassociate(
1591 wpa_s, WLAN_REASON_DEAUTH_LEAVING);
4dac0245 1592 } else if (ssid->disabled != 2) {
86b89452
WS		 1593 if (ssid == wpa_s->current_ssid)
1594 wpa_supplicant_disassociate(
1595 wpa_s, WLAN_REASON_DEAUTH_LEAVING);
1596
1597 was_disabled = ssid->disabled;
1598
1599 ssid->disabled = 1;
1600
1601 if (was_disabled != ssid->disabled)
1602 wpas_notify_network_enabled_changed(wpa_s, ssid);
1603 }
1604}
1605
1606
1607/**
1608 * wpa_supplicant_select_network - Attempt association with a network
1609 * @wpa_s: wpa_supplicant structure for a network interface
1610 * @ssid: wpa_ssid structure for a configured network or %NULL for any network
1611 */
1612void wpa_supplicant_select_network(struct wpa_supplicant *wpa_s,
1613 struct wpa_ssid *ssid)
1614{
1615
1616 struct wpa_ssid *other_ssid;
1617
1618 if (ssid && ssid != wpa_s->current_ssid && wpa_s->current_ssid)
1619 wpa_supplicant_disassociate(
1620 wpa_s, WLAN_REASON_DEAUTH_LEAVING);
1621
1622 /*
1623 * Mark all other networks disabled or mark all networks enabled if no
1624 * network specified.
1625 */
4dac0245
JM		 1626 for (other_ssid = wpa_s->conf->ssid; other_ssid;
1627 other_ssid = other_ssid->next) {
86b89452 1628 int was_disabled = other_ssid->disabled;
4dac0245
JM		 1629 if (was_disabled == 2)
1630 continue; /* do not change persistent P2P group data */
86b89452
WS		 1631
1632 other_ssid->disabled = ssid ? (ssid->id != other_ssid->id) : 0;
1633
1634 if (was_disabled != other_ssid->disabled)
1635 wpas_notify_network_enabled_changed(wpa_s, other_ssid);
86b89452
WS		 1636 }
1637 wpa_s->disconnected = 0;
1638 wpa_s->reassociate = 1;
1639 wpa_supplicant_req_scan(wpa_s, 0, 0);
1640
a1641d26
JM		 1641 if (ssid)
1642 wpas_notify_network_selected(wpa_s, ssid);
86b89452
WS		 1643}
1644
1645
1646/**
1647 * wpa_supplicant_set_ap_scan - Set AP scan mode for interface
1648 * @wpa_s: wpa_supplicant structure for a network interface
1649 * @ap_scan: AP scan mode
1650 * Returns: 0 if succeed or -1 if ap_scan has an invalid value
1651 *
1652 */
1653int wpa_supplicant_set_ap_scan(struct wpa_supplicant *wpa_s, int ap_scan)
1654{
1655
1656 int old_ap_scan;
1657
1658 if (ap_scan < 0 || ap_scan > 2)
1659 return -1;
1660
1661 old_ap_scan = wpa_s->conf->ap_scan;
1662 wpa_s->conf->ap_scan = ap_scan;
1663
1664 if (old_ap_scan != wpa_s->conf->ap_scan)
1665 wpas_notify_ap_scan_changed(wpa_s);
1666
1667 return 0;
1668}
1669
1670
78633c37
SL		 1671/**
1672 * wpa_supplicant_set_bss_expiration_age - Set BSS entry expiration age
1673 * @wpa_s: wpa_supplicant structure for a network interface
1674 * @expire_age: Expiration age in seconds
1675 * Returns: 0 if succeed or -1 if expire_age has an invalid value
1676 *
1677 */
1678int wpa_supplicant_set_bss_expiration_age(struct wpa_supplicant *wpa_s,
1679 unsigned int bss_expire_age)
1680{
1681 if (bss_expire_age < 10) {
1682 wpa_msg(wpa_s, MSG_ERROR, "Invalid bss expiration age %u",
1683 bss_expire_age);
1684 return -1;
1685 }
1686 wpa_msg(wpa_s, MSG_DEBUG, "Setting bss expiration age: %d sec",
1687 bss_expire_age);
1688 wpa_s->conf->bss_expiration_age = bss_expire_age;
1689
1690 return 0;
1691}
1692
1693
1694/**
1695 * wpa_supplicant_set_bss_expiration_count - Set BSS entry expiration scan count
1696 * @wpa_s: wpa_supplicant structure for a network interface
1697 * @expire_count: number of scans after which an unseen BSS is reclaimed
1698 * Returns: 0 if succeed or -1 if expire_count has an invalid value
1699 *
1700 */
1701int wpa_supplicant_set_bss_expiration_count(struct wpa_supplicant *wpa_s,
1702 unsigned int bss_expire_count)
1703{
1704 if (bss_expire_count < 1) {
1705 wpa_msg(wpa_s, MSG_ERROR, "Invalid bss expiration count %u",
1706 bss_expire_count);
1707 return -1;
1708 }
1709 wpa_msg(wpa_s, MSG_DEBUG, "Setting bss expiration scan count: %u",
1710 bss_expire_count);
1711 wpa_s->conf->bss_expiration_scan_count = bss_expire_count;
1712
1713 return 0;
1714}
1715
1716
86b89452
WS		 1717/**
1718 * wpa_supplicant_set_debug_params - Set global debug params
1719 * @global: wpa_global structure
1720 * @debug_level: debug level
1721 * @debug_timestamp: determines if show timestamp in debug data
1722 * @debug_show_keys: determines if show keys in debug data
1723 * Returns: 0 if succeed or -1 if debug_level has wrong value
1724 */
1725int wpa_supplicant_set_debug_params(struct wpa_global *global, int debug_level,
1726 int debug_timestamp, int debug_show_keys)
1727{
1728
1729 int old_level, old_timestamp, old_show_keys;
1730
1731 /* check for allowed debuglevels */
14dc0011
PS		 1732 if (debug_level != MSG_EXCESSIVE &&
1733 debug_level != MSG_MSGDUMP &&
86b89452
WS		 1734 debug_level != MSG_DEBUG &&
1735 debug_level != MSG_INFO &&
1736 debug_level != MSG_WARNING &&
1737 debug_level != MSG_ERROR)
1738 return -1;
1739
1740 old_level = wpa_debug_level;
1741 old_timestamp = wpa_debug_timestamp;
1742 old_show_keys = wpa_debug_show_keys;
1743
1744 wpa_debug_level = debug_level;
1745 wpa_debug_timestamp = debug_timestamp ? 1 : 0;
1746 wpa_debug_show_keys = debug_show_keys ? 1 : 0;
1747
db9133ac
WS		 1748 if (wpa_debug_level != old_level)
1749 wpas_notify_debug_level_changed(global);
1750 if (wpa_debug_timestamp != old_timestamp)
1751 wpas_notify_debug_timestamp_changed(global);
1752 if (wpa_debug_show_keys != old_show_keys)
1753 wpas_notify_debug_show_keys_changed(global);
86b89452
WS		 1754
1755 return 0;
1756}
1757
1758
6fc6879b
JM		 1759/**
1760 * wpa_supplicant_get_ssid - Get a pointer to the current network structure
1761 * @wpa_s: Pointer to wpa_supplicant data
1762 * Returns: A pointer to the current network structure or %NULL on failure
1763 */
1764struct wpa_ssid * wpa_supplicant_get_ssid(struct wpa_supplicant *wpa_s)
1765{
1766 struct wpa_ssid *entry;
1767 u8 ssid[MAX_SSID_LEN];
1768 int res;
1769 size_t ssid_len;
1770 u8 bssid[ETH_ALEN];
1771 int wired;
1772
c2a04078 1773 if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_USER_SPACE_MLME) {
6fc6879b 1774 if (ieee80211_sta_get_ssid(wpa_s, ssid, &ssid_len)) {
f049052b
BG		 1775 wpa_msg(wpa_s, MSG_WARNING, "Could not read SSID from "
1776 "MLME");
6fc6879b
JM		 1777 return NULL;
1778 }
1779 } else {
1780 res = wpa_drv_get_ssid(wpa_s, ssid);
1781 if (res < 0) {
f049052b
BG		 1782 wpa_msg(wpa_s, MSG_WARNING, "Could not read SSID from "
1783 "driver");
6fc6879b
JM		 1784 return NULL;
1785 }
1786 ssid_len = res;
1787 }
1788
c2a04078 1789 if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_USER_SPACE_MLME)
6fc6879b
JM		 1790 os_memcpy(bssid, wpa_s->bssid, ETH_ALEN);
1791 else if (wpa_drv_get_bssid(wpa_s, bssid) < 0) {
f049052b
BG		 1792 wpa_msg(wpa_s, MSG_WARNING, "Could not read BSSID from "
1793 "driver");
6fc6879b
JM		 1794 return NULL;
1795 }
1796
c2a04078
JM		 1797 wired = wpa_s->conf->ap_scan == 0 &&
1798 (wpa_s->drv_flags & WPA_DRIVER_FLAGS_WIRED);
6fc6879b
JM		 1799
1800 entry = wpa_s->conf->ssid;
1801 while (entry) {
1802 if (!entry->disabled &&
1803 ((ssid_len == entry->ssid_len &&
1804 os_memcmp(ssid, entry->ssid, ssid_len) == 0) || wired) &&
1805 (!entry->bssid_set ||
1806 os_memcmp(bssid, entry->bssid, ETH_ALEN) == 0))
1807 return entry;
24c23d1b
JM		 1808#ifdef CONFIG_WPS
1809 if (!entry->disabled &&
1810 (entry->key_mgmt & WPA_KEY_MGMT_WPS) &&
1811 (entry->ssid == NULL || entry->ssid_len == 0) &&
1812 (!entry->bssid_set ||
1813 os_memcmp(bssid, entry->bssid, ETH_ALEN) == 0))
1814 return entry;
1815#endif /* CONFIG_WPS */
6fc6879b
JM		 1816 entry = entry->next;
1817 }
1818
1819 return NULL;
1820}
1821
1822
1823static int wpa_supplicant_set_driver(struct wpa_supplicant *wpa_s,
1824 const char *name)
1825{
1826 int i;
362f781e 1827 size_t len;
74b1c84a 1828 const char *pos, *driver = name;
6fc6879b
JM		 1829
1830 if (wpa_s == NULL)
1831 return -1;
1832
c5121837 1833 if (wpa_drivers[0] == NULL) {
f049052b
BG		 1834 wpa_msg(wpa_s, MSG_ERROR, "No driver interfaces build into "
1835 "wpa_supplicant");
6fc6879b
JM		 1836 return -1;
1837 }
1838
1839 if (name == NULL) {
1840 /* default to first driver in the list */
c5121837 1841 wpa_s->driver = wpa_drivers[0];
8a5ab9f5 1842 wpa_s->global_drv_priv = wpa_s->global->drv_priv[0];
6fc6879b
JM		 1843 return 0;
1844 }
1845
74b1c84a
SO		 1846 do {
1847 pos = os_strchr(driver, ',');
1848 if (pos)
1849 len = pos - driver;
1850 else
1851 len = os_strlen(driver);
1852
1853 for (i = 0; wpa_drivers[i]; i++) {
1854 if (os_strlen(wpa_drivers[i]->name) == len &&
1855 os_strncmp(driver, wpa_drivers[i]->name, len) ==
1856 0) {
1857 wpa_s->driver = wpa_drivers[i];
1858 wpa_s->global_drv_priv =
1859 wpa_s->global->drv_priv[i];
1860 return 0;
1861 }
6fc6879b 1862 }
74b1c84a
SO		 1863
1864 driver = pos + 1;
1865 } while (pos);
6fc6879b 1866
f049052b 1867 wpa_msg(wpa_s, MSG_ERROR, "Unsupported driver '%s'", name);
6fc6879b
JM		 1868 return -1;
1869}
1870
1871
a8e0505b
JM		 1872/**
1873 * wpa_supplicant_rx_eapol - Deliver a received EAPOL frame to wpa_supplicant
1874 * @ctx: Context pointer (wpa_s); this is the ctx variable registered
1875 * with struct wpa_driver_ops::init()
1876 * @src_addr: Source address of the EAPOL frame
1877 * @buf: EAPOL data starting from the EAPOL header (i.e., no Ethernet header)
1878 * @len: Length of the EAPOL data
1879 *
1880 * This function is called for each received EAPOL frame. Most driver
1881 * interfaces rely on more generic OS mechanism for receiving frames through
1882 * l2_packet, but if such a mechanism is not available, the driver wrapper may
1883 * take care of received EAPOL frames and deliver them to the core supplicant
1884 * code by calling this function.
1885 */
6fc6879b
JM		 1886void wpa_supplicant_rx_eapol(void *ctx, const u8 *src_addr,
1887 const u8 *buf, size_t len)
1888{
1889 struct wpa_supplicant *wpa_s = ctx;
1890
f049052b 1891 wpa_dbg(wpa_s, MSG_DEBUG, "RX EAPOL from " MACSTR, MAC2STR(src_addr));
6fc6879b
JM		 1892 wpa_hexdump(MSG_MSGDUMP, "RX EAPOL", buf, len);
1893
1ff73338
JM		 1894 if (wpa_s->wpa_state < WPA_ASSOCIATED) {
1895 /*
1896 * There is possible race condition between receiving the
1897 * association event and the EAPOL frame since they are coming
1898 * through different paths from the driver. In order to avoid
1899 * issues in trying to process the EAPOL frame before receiving
1900 * association information, lets queue it for processing until
1901 * the association event is received.
1902 */
f049052b
BG		 1903 wpa_dbg(wpa_s, MSG_DEBUG, "Not associated - Delay processing "
1904 "of received EAPOL frame");
1ff73338
JM		 1905 wpabuf_free(wpa_s->pending_eapol_rx);
1906 wpa_s->pending_eapol_rx = wpabuf_alloc_copy(buf, len);
1907 if (wpa_s->pending_eapol_rx) {
1908 os_get_time(&wpa_s->pending_eapol_rx_time);
1909 os_memcpy(wpa_s->pending_eapol_rx_src, src_addr,
1910 ETH_ALEN);
1911 }
1912 return;
1913 }
1914
db149ac9
JM		 1915#ifdef CONFIG_AP
1916 if (wpa_s->ap_iface) {
1917 wpa_supplicant_ap_rx_eapol(wpa_s, src_addr, buf, len);
1918 return;
1919 }
1920#endif /* CONFIG_AP */
1921
6fc6879b 1922 if (wpa_s->key_mgmt == WPA_KEY_MGMT_NONE) {
f049052b
BG		 1923 wpa_dbg(wpa_s, MSG_DEBUG, "Ignored received EAPOL frame since "
1924 "no key management is configured");
6fc6879b
JM		 1925 return;
1926 }
1927
1928 if (wpa_s->eapol_received == 0 &&
c2a04078 1929 (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_4WAY_HANDSHAKE) ||
56586197 1930 !wpa_key_mgmt_wpa_psk(wpa_s->key_mgmt) ||
9c972abb
JM		 1931 wpa_s->wpa_state != WPA_COMPLETED) &&
1932 (wpa_s->current_ssid == NULL ||
1933 wpa_s->current_ssid->mode != IEEE80211_MODE_IBSS)) {
6fc6879b
JM		 1934 /* Timeout for completing IEEE 802.1X and WPA authentication */
1935 wpa_supplicant_req_auth_timeout(
1936 wpa_s,
56586197 1937 (wpa_key_mgmt_wpa_ieee8021x(wpa_s->key_mgmt) ||
a6f06dab
AT		 1938 wpa_s->key_mgmt == WPA_KEY_MGMT_IEEE8021X_NO_WPA ||
1939 wpa_s->key_mgmt == WPA_KEY_MGMT_WPS) ?
6fc6879b
JM		 1940 70 : 10, 0);
1941 }
1942 wpa_s->eapol_received++;
1943
1944 if (wpa_s->countermeasures) {
f049052b
BG		 1945 wpa_msg(wpa_s, MSG_INFO, "WPA: Countermeasures - dropped "
1946 "EAPOL packet");
6fc6879b
JM		 1947 return;
1948 }
1949
8be18440
JM		 1950#ifdef CONFIG_IBSS_RSN
1951 if (wpa_s->current_ssid &&
d7dcba70 1952 wpa_s->current_ssid->mode == WPAS_MODE_IBSS) {
8be18440
JM		 1953 ibss_rsn_rx_eapol(wpa_s->ibss_rsn, src_addr, buf, len);
1954 return;
1955 }
1956#endif /* CONFIG_IBSS_RSN */
1957
6fc6879b
JM		 1958 /* Source address of the incoming EAPOL frame could be compared to the
1959 * current BSSID. However, it is possible that a centralized
1960 * Authenticator could be using another MAC address than the BSSID of
1961 * an AP, so just allow any address to be used for now. The replies are
1962 * still sent to the current BSSID (if available), though. */
1963
1964 os_memcpy(wpa_s->last_eapol_src, src_addr, ETH_ALEN);
56586197 1965 if (!wpa_key_mgmt_wpa_psk(wpa_s->key_mgmt) &&
6fc6879b
JM		 1966 eapol_sm_rx_eapol(wpa_s->eapol, src_addr, buf, len) > 0)
1967 return;
1968 wpa_drv_poll(wpa_s);
c2a04078 1969 if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_4WAY_HANDSHAKE))
6fc6879b 1970 wpa_sm_rx_eapol(wpa_s->wpa, src_addr, buf, len);
56586197 1971 else if (wpa_key_mgmt_wpa_ieee8021x(wpa_s->key_mgmt)) {
6fc6879b
JM		 1972 /*
1973 * Set portValid = TRUE here since we are going to skip 4-way
1974 * handshake processing which would normally set portValid. We
1975 * need this to allow the EAPOL state machines to be completed
1976 * without going through EAPOL-Key handshake.
1977 */
1978 eapol_sm_notify_portValid(wpa_s->eapol, TRUE);
1979 }
1980}
1981
1982
6fc6879b
JM		 1983/**
1984 * wpa_supplicant_driver_init - Initialize driver interface parameters
1985 * @wpa_s: Pointer to wpa_supplicant data
1986 * Returns: 0 on success, -1 on failure
1987 *
1988 * This function is called to initialize driver interface parameters.
1989 * wpa_drv_init() must have been called before this function to initialize the
1990 * driver interface.
1991 */
1992int wpa_supplicant_driver_init(struct wpa_supplicant *wpa_s)
1993{
1994 static int interface_count = 0;
1995
1996 if (wpa_s->driver->send_eapol) {
1997 const u8 *addr = wpa_drv_get_mac_addr(wpa_s);
1998 if (addr)
1999 os_memcpy(wpa_s->own_addr, addr, ETH_ALEN);
fdadd5fe
JM		 2000 } else if (!(wpa_s->drv_flags &
2001 WPA_DRIVER_FLAGS_P2P_DEDICATED_INTERFACE)) {
6fc6879b
JM		 2002 wpa_s->l2 = l2_packet_init(wpa_s->ifname,
2003 wpa_drv_get_mac_addr(wpa_s),
2004 ETH_P_EAPOL,
2005 wpa_supplicant_rx_eapol, wpa_s, 0);
2006 if (wpa_s->l2 == NULL)
2007 return -1;
fdadd5fe
JM		 2008 } else {
2009 const u8 *addr = wpa_drv_get_mac_addr(wpa_s);
2010 if (addr)
2011 os_memcpy(wpa_s->own_addr, addr, ETH_ALEN);
6fc6879b
JM		 2012 }
2013
2014 if (wpa_s->l2 && l2_packet_get_own_addr(wpa_s->l2, wpa_s->own_addr)) {
f049052b 2015 wpa_msg(wpa_s, MSG_ERROR, "Failed to get own L2 address");
6fc6879b
JM		 2016 return -1;
2017 }
2018
f049052b
BG		 2019 wpa_dbg(wpa_s, MSG_DEBUG, "Own MAC address: " MACSTR,
2020 MAC2STR(wpa_s->own_addr));
6fc6879b
JM		 2021
2022 if (wpa_s->bridge_ifname[0]) {
f049052b
BG		 2023 wpa_dbg(wpa_s, MSG_DEBUG, "Receiving packets from bridge "
2024 "interface '%s'", wpa_s->bridge_ifname);
6fc6879b
JM		 2025 wpa_s->l2_br = l2_packet_init(wpa_s->bridge_ifname,
2026 wpa_s->own_addr,
2027 ETH_P_EAPOL,
2028 wpa_supplicant_rx_eapol, wpa_s,
2029 0);
2030 if (wpa_s->l2_br == NULL) {
f049052b
BG		 2031 wpa_msg(wpa_s, MSG_ERROR, "Failed to open l2_packet "
2032 "connection for the bridge interface '%s'",
2033 wpa_s->bridge_ifname);
6fc6879b
JM		 2034 return -1;
2035 }
2036 }
2037
6fc6879b
JM		 2038 wpa_clear_keys(wpa_s, NULL);
2039
2040 /* Make sure that TKIP countermeasures are not left enabled (could
2041 * happen if wpa_supplicant is killed during countermeasures. */
2042 wpa_drv_set_countermeasures(wpa_s, 0);
2043
f049052b 2044 wpa_dbg(wpa_s, MSG_DEBUG, "RSN: flushing PMKID list in the driver");
6fc6879b
JM		 2045 wpa_drv_flush_pmkid(wpa_s);
2046
ba2a573c 2047 wpa_s->prev_scan_ssid = WILDCARD_SSID_SCAN;
74e259ec
JM		 2048 if (wpa_supplicant_enabled_networks(wpa_s->conf)) {
2049 wpa_supplicant_req_scan(wpa_s, interface_count, 100000);
2050 interface_count++;
2051 } else
2052 wpa_supplicant_set_state(wpa_s, WPA_INACTIVE);
6fc6879b
JM		 2053
2054 return 0;
2055}
2056
2057
2058static int wpa_supplicant_daemon(const char *pid_file)
2059{
2060 wpa_printf(MSG_DEBUG, "Daemonize..");
2061 return os_daemonize(pid_file);
2062}
2063
2064
2065static struct wpa_supplicant * wpa_supplicant_alloc(void)
2066{
2067 struct wpa_supplicant *wpa_s;
2068
2069 wpa_s = os_zalloc(sizeof(*wpa_s));
2070 if (wpa_s == NULL)
2071 return NULL;
2072 wpa_s->scan_req = 1;
67b9bd08 2073 wpa_s->scan_interval = 5;
c302f207 2074 wpa_s->new_connection = 1;
b22128ef 2075 wpa_s->parent = wpa_s;
6fc6879b
JM		 2076
2077 return wpa_s;
2078}
2079
2080
2081static int wpa_supplicant_init_iface(struct wpa_supplicant *wpa_s,
2082 struct wpa_interface *iface)
2083{
362f781e
JM		 2084 const char *ifname, *driver;
2085 struct wpa_driver_capa capa;
2086
6fc6879b
JM		 2087 wpa_printf(MSG_DEBUG, "Initializing interface '%s' conf '%s' driver "
2088 "'%s' ctrl_interface '%s' bridge '%s'", iface->ifname,
2089 iface->confname ? iface->confname : "N/A",
2090 iface->driver ? iface->driver : "default",
2091 iface->ctrl_interface ? iface->ctrl_interface : "N/A",
2092 iface->bridge_ifname ? iface->bridge_ifname : "N/A");
2093
6fc6879b
JM		 2094 if (iface->confname) {
2095#ifdef CONFIG_BACKEND_FILE
2096 wpa_s->confname = os_rel2abs_path(iface->confname);
2097 if (wpa_s->confname == NULL) {
2098 wpa_printf(MSG_ERROR, "Failed to get absolute path "
2099 "for configuration file '%s'.",
2100 iface->confname);
2101 return -1;
2102 }
2103 wpa_printf(MSG_DEBUG, "Configuration file '%s' -> '%s'",
2104 iface->confname, wpa_s->confname);
2105#else /* CONFIG_BACKEND_FILE */
2106 wpa_s->confname = os_strdup(iface->confname);
2107#endif /* CONFIG_BACKEND_FILE */
2108 wpa_s->conf = wpa_config_read(wpa_s->confname);
2109 if (wpa_s->conf == NULL) {
2110 wpa_printf(MSG_ERROR, "Failed to read or parse "
2111 "configuration '%s'.", wpa_s->confname);
2112 return -1;
2113 }
2114
2115 /*
2116 * Override ctrl_interface and driver_param if set on command
2117 * line.
2118 */
2119 if (iface->ctrl_interface) {
2120 os_free(wpa_s->conf->ctrl_interface);
2121 wpa_s->conf->ctrl_interface =
2122 os_strdup(iface->ctrl_interface);
2123 }
2124
2125 if (iface->driver_param) {
2126 os_free(wpa_s->conf->driver_param);
2127 wpa_s->conf->driver_param =
2128 os_strdup(iface->driver_param);
2129 }
2130 } else
2131 wpa_s->conf = wpa_config_alloc_empty(iface->ctrl_interface,
2132 iface->driver_param);
2133
2134 if (wpa_s->conf == NULL) {
2135 wpa_printf(MSG_ERROR, "\nNo configuration found.");
2136 return -1;
2137 }
2138
2139 if (iface->ifname == NULL) {
2140 wpa_printf(MSG_ERROR, "\nInterface name is required.");
2141 return -1;
2142 }
2143 if (os_strlen(iface->ifname) >= sizeof(wpa_s->ifname)) {
2144 wpa_printf(MSG_ERROR, "\nToo long interface name '%s'.",
2145 iface->ifname);
2146 return -1;
2147 }
2148 os_strlcpy(wpa_s->ifname, iface->ifname, sizeof(wpa_s->ifname));
2149
2150 if (iface->bridge_ifname) {
2151 if (os_strlen(iface->bridge_ifname) >=
2152 sizeof(wpa_s->bridge_ifname)) {
2153 wpa_printf(MSG_ERROR, "\nToo long bridge interface "
2154 "name '%s'.", iface->bridge_ifname);
2155 return -1;
2156 }
2157 os_strlcpy(wpa_s->bridge_ifname, iface->bridge_ifname,
2158 sizeof(wpa_s->bridge_ifname));
2159 }
2160
6fc6879b
JM		 2161 /* RSNA Supplicant Key Management - INITIALIZE */
2162 eapol_sm_notify_portEnabled(wpa_s->eapol, FALSE);
2163 eapol_sm_notify_portValid(wpa_s->eapol, FALSE);
2164
2165 /* Initialize driver interface and register driver event handler before
2166 * L2 receive handler so that association events are processed before
2167 * EAPOL-Key packets if both become available for the same select()
2168 * call. */
362f781e
JM		 2169 driver = iface->driver;
2170next_driver:
2171 if (wpa_supplicant_set_driver(wpa_s, driver) < 0)
2172 return -1;
2173
6fc6879b
JM		 2174 wpa_s->drv_priv = wpa_drv_init(wpa_s, wpa_s->ifname);
2175 if (wpa_s->drv_priv == NULL) {
362f781e 2176 const char *pos;
a5b9337f 2177 pos = driver ? os_strchr(driver, ',') : NULL;
362f781e 2178 if (pos) {
f049052b
BG		 2179 wpa_dbg(wpa_s, MSG_DEBUG, "Failed to initialize "
2180 "driver interface - try next driver wrapper");
362f781e
JM		 2181 driver = pos + 1;
2182 goto next_driver;
2183 }
f049052b
BG		 2184 wpa_msg(wpa_s, MSG_ERROR, "Failed to initialize driver "
2185 "interface");
6fc6879b
JM		 2186 return -1;
2187 }
2188 if (wpa_drv_set_param(wpa_s, wpa_s->conf->driver_param) < 0) {
f049052b
BG		 2189 wpa_msg(wpa_s, MSG_ERROR, "Driver interface rejected "
2190 "driver_param '%s'", wpa_s->conf->driver_param);
6fc6879b
JM		 2191 return -1;
2192 }
2193
2194 ifname = wpa_drv_get_ifname(wpa_s);
2195 if (ifname && os_strcmp(ifname, wpa_s->ifname) != 0) {
f049052b
BG		 2196 wpa_dbg(wpa_s, MSG_DEBUG, "Driver interface replaced "
2197 "interface name with '%s'", ifname);
6fc6879b
JM		 2198 os_strlcpy(wpa_s->ifname, ifname, sizeof(wpa_s->ifname));
2199 }
2200
2201 if (wpa_supplicant_init_wpa(wpa_s) < 0)
2202 return -1;
2203
2204 wpa_sm_set_ifname(wpa_s->wpa, wpa_s->ifname,
2205 wpa_s->bridge_ifname[0] ? wpa_s->bridge_ifname :
2206 NULL);
2207 wpa_sm_set_fast_reauth(wpa_s->wpa, wpa_s->conf->fast_reauth);
2208
2209 if (wpa_s->conf->dot11RSNAConfigPMKLifetime &&
2210 wpa_sm_set_param(wpa_s->wpa, RSNA_PMK_LIFETIME,
2211 wpa_s->conf->dot11RSNAConfigPMKLifetime)) {
f049052b
BG		 2212 wpa_msg(wpa_s, MSG_ERROR, "Invalid WPA parameter value for "
2213 "dot11RSNAConfigPMKLifetime");
6fc6879b
JM		 2214 return -1;
2215 }
2216
2217 if (wpa_s->conf->dot11RSNAConfigPMKReauthThreshold &&
2218 wpa_sm_set_param(wpa_s->wpa, RSNA_PMK_REAUTH_THRESHOLD,
2219 wpa_s->conf->dot11RSNAConfigPMKReauthThreshold)) {
f049052b 2220 wpa_msg(wpa_s, MSG_ERROR, "Invalid WPA parameter value for "
6fc6879b
JM		 2221 "dot11RSNAConfigPMKReauthThreshold");
2222 return -1;
2223 }
2224
2225 if (wpa_s->conf->dot11RSNAConfigSATimeout &&
2226 wpa_sm_set_param(wpa_s->wpa, RSNA_SA_TIMEOUT,
2227 wpa_s->conf->dot11RSNAConfigSATimeout)) {
f049052b
BG		 2228 wpa_msg(wpa_s, MSG_ERROR, "Invalid WPA parameter value for "
2229 "dot11RSNAConfigSATimeout");
6fc6879b
JM		 2230 return -1;
2231 }
2232
814782b9
JM		 2233 if (wpa_drv_get_capa(wpa_s, &capa) == 0) {
2234 wpa_s->drv_flags = capa.flags;
2235 if (capa.flags & WPA_DRIVER_FLAGS_USER_SPACE_MLME) {
2236 if (ieee80211_sta_init(wpa_s))
2237 return -1;
2238 }
2239 wpa_s->max_scan_ssids = capa.max_scan_ssids;
2240 wpa_s->max_remain_on_chan = capa.max_remain_on_chan;
c4ea4c5c 2241 wpa_s->max_stations = capa.max_stations;
814782b9
JM		 2242 }
2243 if (wpa_s->max_remain_on_chan == 0)
2244 wpa_s->max_remain_on_chan = 1000;
2245
6fc6879b
JM		 2246 if (wpa_supplicant_driver_init(wpa_s) < 0)
2247 return -1;
2248
281ff0aa
GP		 2249#ifdef CONFIG_TDLS
2250 if (wpa_tdls_init(wpa_s->wpa))
2251 return -1;
2252#endif /* CONFIG_TDLS */
2253
315ce40a
JM		 2254 if (wpa_s->conf->country[0] && wpa_s->conf->country[1] &&
2255 wpa_drv_set_country(wpa_s, wpa_s->conf->country)) {
f049052b 2256 wpa_dbg(wpa_s, MSG_DEBUG, "Failed to set country");
6d158490
LR		 2257 return -1;
2258 }
2259
6fc6879b
JM		 2260 wpa_sm_set_own_addr(wpa_s->wpa, wpa_s->own_addr);
2261
116654ce
JM		 2262 if (wpas_wps_init(wpa_s))
2263 return -1;
2264
6fc6879b
JM		 2265 if (wpa_supplicant_init_eapol(wpa_s) < 0)
2266 return -1;
2267 wpa_sm_set_eapol(wpa_s->wpa, wpa_s->eapol);
2268
2269 wpa_s->ctrl_iface = wpa_supplicant_ctrl_iface_init(wpa_s);
2270 if (wpa_s->ctrl_iface == NULL) {
2271 wpa_printf(MSG_ERROR,
2272 "Failed to initialize control interface '%s'.\n"
2273 "You may have another wpa_supplicant process "
2274 "already running or the file was\n"
2275 "left by an unclean termination of wpa_supplicant "
2276 "in which case you will need\n"
2277 "to manually remove this file before starting "
2278 "wpa_supplicant again.\n",
2279 wpa_s->conf->ctrl_interface);
2280 return -1;
2281 }
2282
b22128ef
JM		 2283#ifdef CONFIG_P2P
2284 if (wpas_p2p_init(wpa_s->global, wpa_s) < 0) {
f049052b 2285 wpa_msg(wpa_s, MSG_ERROR, "Failed to init P2P");
b22128ef
JM		 2286 return -1;
2287 }
2288#endif /* CONFIG_P2P */
2289
83922c2d
JM		 2290 if (wpa_bss_init(wpa_s) < 0)
2291 return -1;
83922c2d 2292
6fc6879b
JM		 2293 return 0;
2294}
2295
2296
2ee055b3
JM		 2297static void wpa_supplicant_deinit_iface(struct wpa_supplicant *wpa_s,
2298 int notify)
6fc6879b
JM		 2299{
2300 if (wpa_s->drv_priv) {
2301 wpa_supplicant_deauthenticate(wpa_s,
2302 WLAN_REASON_DEAUTH_LEAVING);
2303
6fc6879b
JM		 2304 wpa_drv_set_countermeasures(wpa_s, 0);
2305 wpa_clear_keys(wpa_s, NULL);
2306 }
2307
8e56d189
JM		 2308 wpa_supplicant_cleanup(wpa_s);
2309
2ee055b3
JM		 2310 if (notify)
2311 wpas_notify_iface_removed(wpa_s);
6fc6879b 2312
6fc6879b
JM		 2313 if (wpa_s->drv_priv)
2314 wpa_drv_deinit(wpa_s);
2315}
2316
2317
2318/**
2319 * wpa_supplicant_add_iface - Add a new network interface
2320 * @global: Pointer to global data from wpa_supplicant_init()
2321 * @iface: Interface configuration options
2322 * Returns: Pointer to the created interface or %NULL on failure
2323 *
2324 * This function is used to add new network interfaces for %wpa_supplicant.
2325 * This can be called before wpa_supplicant_run() to add interfaces before the
2326 * main event loop has been started. In addition, new interfaces can be added
2327 * dynamically while %wpa_supplicant is already running. This could happen,
2328 * e.g., when a hotplug network adapter is inserted.
2329 */
2330struct wpa_supplicant * wpa_supplicant_add_iface(struct wpa_global *global,
2331 struct wpa_interface *iface)
2332{
2333 struct wpa_supplicant *wpa_s;
d27df100 2334 struct wpa_interface t_iface;
8e56d189 2335 struct wpa_ssid *ssid;
6fc6879b
JM		 2336
2337 if (global == NULL || iface == NULL)
2338 return NULL;
2339
2340 wpa_s = wpa_supplicant_alloc();
2341 if (wpa_s == NULL)
2342 return NULL;
2343
d8222ae3
JM		 2344 wpa_s->global = global;
2345
d27df100
JM		 2346 t_iface = *iface;
2347 if (global->params.override_driver) {
2348 wpa_printf(MSG_DEBUG, "Override interface parameter: driver "
2349 "('%s' -> '%s')",
2350 iface->driver, global->params.override_driver);
2351 t_iface.driver = global->params.override_driver;
2352 }
2353 if (global->params.override_ctrl_interface) {
2354 wpa_printf(MSG_DEBUG, "Override interface parameter: "
2355 "ctrl_interface ('%s' -> '%s')",
2356 iface->ctrl_interface,
2357 global->params.override_ctrl_interface);
2358 t_iface.ctrl_interface =
2359 global->params.override_ctrl_interface;
2360 }
2361 if (wpa_supplicant_init_iface(wpa_s, &t_iface)) {
6fc6879b
JM		 2362 wpa_printf(MSG_DEBUG, "Failed to add interface %s",
2363 iface->ifname);
2ee055b3 2364 wpa_supplicant_deinit_iface(wpa_s, 0);
6fc6879b
JM		 2365 os_free(wpa_s);
2366 return NULL;
2367 }
2368
dc461de4
WS		 2369 /* Notify the control interfaces about new iface */
2370 if (wpas_notify_iface_added(wpa_s)) {
2ee055b3 2371 wpa_supplicant_deinit_iface(wpa_s, 1);
6fc6879b
JM		 2372 os_free(wpa_s);
2373 return NULL;
2374 }
1bd3f426 2375
8e56d189
JM		 2376 for (ssid = wpa_s->conf->ssid; ssid; ssid = ssid->next)
2377 wpas_notify_network_added(wpa_s, ssid);
2378
6fc6879b
JM		 2379 wpa_s->next = global->ifaces;
2380 global->ifaces = wpa_s;
2381
f049052b 2382 wpa_dbg(wpa_s, MSG_DEBUG, "Added interface %s", wpa_s->ifname);
6fc6879b
JM		 2383
2384 return wpa_s;
2385}
2386
2387
2388/**
2389 * wpa_supplicant_remove_iface - Remove a network interface
2390 * @global: Pointer to global data from wpa_supplicant_init()
2391 * @wpa_s: Pointer to the network interface to be removed
2392 * Returns: 0 if interface was removed, -1 if interface was not found
2393 *
2394 * This function can be used to dynamically remove network interfaces from
2395 * %wpa_supplicant, e.g., when a hotplug network adapter is ejected. In
2396 * addition, this function is used to remove all remaining interfaces when
2397 * %wpa_supplicant is terminated.
2398 */
2399int wpa_supplicant_remove_iface(struct wpa_global *global,
2400 struct wpa_supplicant *wpa_s)
2401{
2402 struct wpa_supplicant *prev;
2403
2404 /* Remove interface from the global list of interfaces */
2405 prev = global->ifaces;
2406 if (prev == wpa_s) {
2407 global->ifaces = wpa_s->next;
2408 } else {
2409 while (prev && prev->next != wpa_s)
2410 prev = prev->next;
2411 if (prev == NULL)
2412 return -1;
2413 prev->next = wpa_s->next;
2414 }
2415
f049052b 2416 wpa_dbg(wpa_s, MSG_DEBUG, "Removing interface %s", wpa_s->ifname);
6fc6879b 2417
b22128ef
JM		 2418 if (global->p2p_group_formation == wpa_s)
2419 global->p2p_group_formation = NULL;
2ee055b3 2420 wpa_supplicant_deinit_iface(wpa_s, 1);
6fc6879b
JM		 2421 os_free(wpa_s);
2422
2423 return 0;
2424}
2425
2426
cf83fb0b
PS		 2427/**
2428 * wpa_supplicant_get_eap_mode - Get the current EAP mode
2429 * @wpa_s: Pointer to the network interface
2430 * Returns: Pointer to the eap mode or the string "UNKNOWN" if not found
2431 */
2432const char * wpa_supplicant_get_eap_mode(struct wpa_supplicant *wpa_s)
2433{
2434 const char *eapol_method;
2435
2436 if (wpa_key_mgmt_wpa_ieee8021x(wpa_s->key_mgmt) == 0 &&
2437 wpa_s->key_mgmt != WPA_KEY_MGMT_IEEE8021X_NO_WPA) {
2438 return "NO-EAP";
2439 }
2440
2441 eapol_method = eapol_sm_get_method_name(wpa_s->eapol);
2442 if (eapol_method == NULL)
2443 return "UNKNOWN-EAP";
2444
2445 return eapol_method;
2446}
2447
2448
6fc6879b
JM		 2449/**
2450 * wpa_supplicant_get_iface - Get a new network interface
2451 * @global: Pointer to global data from wpa_supplicant_init()
2452 * @ifname: Interface name
2453 * Returns: Pointer to the interface or %NULL if not found
2454 */
2455struct wpa_supplicant * wpa_supplicant_get_iface(struct wpa_global *global,
2456 const char *ifname)
2457{
2458 struct wpa_supplicant *wpa_s;
2459
2460 for (wpa_s = global->ifaces; wpa_s; wpa_s = wpa_s->next) {
2461 if (os_strcmp(wpa_s->ifname, ifname) == 0)
2462 return wpa_s;
2463 }
2464 return NULL;
2465}
2466
2467
50b16da1 2468#ifndef CONFIG_NO_WPA_MSG
4f1495ae
BG		 2469static const char * wpa_supplicant_msg_ifname_cb(void *ctx)
2470{
2471 struct wpa_supplicant *wpa_s = ctx;
2472 if (wpa_s == NULL)
2473 return NULL;
2474 return wpa_s->ifname;
2475}
50b16da1 2476#endif /* CONFIG_NO_WPA_MSG */
4f1495ae
BG		 2477
2478
6fc6879b
JM		 2479/**
2480 * wpa_supplicant_init - Initialize %wpa_supplicant
2481 * @params: Parameters for %wpa_supplicant
2482 * Returns: Pointer to global %wpa_supplicant data, or %NULL on failure
2483 *
2484 * This function is used to initialize %wpa_supplicant. After successful
2485 * initialization, the returned data pointer can be used to add and remove
2486 * network interfaces, and eventually, to deinitialize %wpa_supplicant.
2487 */
2488struct wpa_global * wpa_supplicant_init(struct wpa_params *params)
2489{
2490 struct wpa_global *global;
ac305589 2491 int ret, i;
6fc6879b
JM		 2492
2493 if (params == NULL)
2494 return NULL;
2495
50b16da1 2496#ifndef CONFIG_NO_WPA_MSG
4f1495ae 2497 wpa_msg_register_ifname_cb(wpa_supplicant_msg_ifname_cb);
50b16da1 2498#endif /* CONFIG_NO_WPA_MSG */
4f1495ae 2499
6fc6879b 2500 wpa_debug_open_file(params->wpa_debug_file_path);
daa70d49
SL		 2501 if (params->wpa_debug_syslog)
2502 wpa_debug_open_syslog();
6fc6879b 2503
12760815 2504 ret = eap_register_methods();
6fc6879b
JM		 2505 if (ret) {
2506 wpa_printf(MSG_ERROR, "Failed to register EAP methods");
2507 if (ret == -2)
2508 wpa_printf(MSG_ERROR, "Two or more EAP methods used "
2509 "the same EAP type.");
2510 return NULL;
2511 }
2512
2513 global = os_zalloc(sizeof(*global));
2514 if (global == NULL)
2515 return NULL;
b22128ef
JM		 2516 dl_list_init(&global->p2p_srv_bonjour);
2517 dl_list_init(&global->p2p_srv_upnp);
6fc6879b
JM		 2518 global->params.daemonize = params->daemonize;
2519 global->params.wait_for_monitor = params->wait_for_monitor;
2520 global->params.dbus_ctrl_interface = params->dbus_ctrl_interface;
2521 if (params->pid_file)
2522 global->params.pid_file = os_strdup(params->pid_file);
2523 if (params->ctrl_interface)
2524 global->params.ctrl_interface =
2525 os_strdup(params->ctrl_interface);
d27df100
JM		 2526 if (params->override_driver)
2527 global->params.override_driver =
2528 os_strdup(params->override_driver);
2529 if (params->override_ctrl_interface)
2530 global->params.override_ctrl_interface =
2531 os_strdup(params->override_ctrl_interface);
6fc6879b
JM		 2532 wpa_debug_level = global->params.wpa_debug_level =
2533 params->wpa_debug_level;
2534 wpa_debug_show_keys = global->params.wpa_debug_show_keys =
2535 params->wpa_debug_show_keys;
2536 wpa_debug_timestamp = global->params.wpa_debug_timestamp =
2537 params->wpa_debug_timestamp;
2538
f19858f5
JM		 2539 wpa_printf(MSG_DEBUG, "wpa_supplicant v" VERSION_STR);
2540
0456ea16 2541 if (eloop_init()) {
6fc6879b
JM		 2542 wpa_printf(MSG_ERROR, "Failed to initialize event loop");
2543 wpa_supplicant_deinit(global);
2544 return NULL;
2545 }
2546
38e24575 2547 random_init(params->entropy_file);
d47fa330 2548
6fc6879b
JM		 2549 global->ctrl_iface = wpa_supplicant_global_ctrl_iface_init(global);
2550 if (global->ctrl_iface == NULL) {
2551 wpa_supplicant_deinit(global);
2552 return NULL;
2553 }
2554
dc461de4
WS		 2555 if (wpas_notify_supplicant_initialized(global)) {
2556 wpa_supplicant_deinit(global);
2557 return NULL;
6fc6879b
JM		 2558 }
2559
c5121837 2560 for (i = 0; wpa_drivers[i]; i++)
ac305589
JM		 2561 global->drv_count++;
2562 if (global->drv_count == 0) {
2563 wpa_printf(MSG_ERROR, "No drivers enabled");
2564 wpa_supplicant_deinit(global);
2565 return NULL;
2566 }
2567 global->drv_priv = os_zalloc(global->drv_count * sizeof(void *));
2568 if (global->drv_priv == NULL) {
2569 wpa_supplicant_deinit(global);
2570 return NULL;
2571 }
c5121837
JM		 2572 for (i = 0; wpa_drivers[i]; i++) {
2573 if (!wpa_drivers[i]->global_init)
ac305589 2574 continue;
c5121837 2575 global->drv_priv[i] = wpa_drivers[i]->global_init();
ac305589
JM		 2576 if (global->drv_priv[i] == NULL) {
2577 wpa_printf(MSG_ERROR, "Failed to initialize driver "
c5121837 2578 "'%s'", wpa_drivers[i]->name);
ac305589
JM		 2579 wpa_supplicant_deinit(global);
2580 return NULL;
2581 }
2582 }
2583
6fc6879b
JM		 2584 return global;
2585}
2586
2587
2588/**
2589 * wpa_supplicant_run - Run the %wpa_supplicant main event loop
2590 * @global: Pointer to global data from wpa_supplicant_init()
2591 * Returns: 0 after successful event loop run, -1 on failure
2592 *
2593 * This function starts the main event loop and continues running as long as
2594 * there are any remaining events. In most cases, this function is running as
2595 * long as the %wpa_supplicant process in still in use.
2596 */
2597int wpa_supplicant_run(struct wpa_global *global)
2598{
2599 struct wpa_supplicant *wpa_s;
2600
2601 if (global->params.daemonize &&
2602 wpa_supplicant_daemon(global->params.pid_file))
2603 return -1;
2604
2605 if (global->params.wait_for_monitor) {
2606 for (wpa_s = global->ifaces; wpa_s; wpa_s = wpa_s->next)
2607 if (wpa_s->ctrl_iface)
2608 wpa_supplicant_ctrl_iface_wait(
2609 wpa_s->ctrl_iface);
2610 }
2611
0456ea16
JM		 2612 eloop_register_signal_terminate(wpa_supplicant_terminate, global);
2613 eloop_register_signal_reconfig(wpa_supplicant_reconfig, global);
6fc6879b
JM		 2614
2615 eloop_run();
2616
2617 return 0;
2618}
2619
2620
2621/**
2622 * wpa_supplicant_deinit - Deinitialize %wpa_supplicant
2623 * @global: Pointer to global data from wpa_supplicant_init()
2624 *
2625 * This function is called to deinitialize %wpa_supplicant and to free all
2626 * allocated resources. Remaining network interfaces will also be removed.
2627 */
2628void wpa_supplicant_deinit(struct wpa_global *global)
2629{
ac305589
JM		 2630 int i;
2631
6fc6879b
JM		 2632 if (global == NULL)
2633 return;
2634
b22128ef
JM		 2635#ifdef CONFIG_P2P
2636 wpas_p2p_deinit_global(global);
2637#endif /* CONFIG_P2P */
2638
6fc6879b
JM		 2639 while (global->ifaces)
2640 wpa_supplicant_remove_iface(global, global->ifaces);
2641
2642 if (global->ctrl_iface)
2643 wpa_supplicant_global_ctrl_iface_deinit(global->ctrl_iface);
dc461de4
WS		 2644
2645 wpas_notify_supplicant_deinitialized(global);
6fc6879b
JM		 2646
2647 eap_peer_unregister_methods();
3ec97afe
JM		 2648#ifdef CONFIG_AP
2649 eap_server_unregister_methods();
2650#endif /* CONFIG_AP */
6fc6879b 2651
c5121837 2652 for (i = 0; wpa_drivers[i] && global->drv_priv; i++) {
ac305589
JM		 2653 if (!global->drv_priv[i])
2654 continue;
c5121837 2655 wpa_drivers[i]->global_deinit(global->drv_priv[i]);
ac305589
JM		 2656 }
2657 os_free(global->drv_priv);
2658
d47fa330
JM		 2659 random_deinit();
2660
6fc6879b
JM		 2661 eloop_destroy();
2662
2663 if (global->params.pid_file) {
2664 os_daemonize_terminate(global->params.pid_file);
2665 os_free(global->params.pid_file);
2666 }
2667 os_free(global->params.ctrl_interface);
d27df100
JM		 2668 os_free(global->params.override_driver);
2669 os_free(global->params.override_ctrl_interface);
6fc6879b
JM		 2670
2671 os_free(global);
daa70d49 2672 wpa_debug_close_syslog();
6fc6879b
JM		 2673 wpa_debug_close_file();
2674}
611aea7d
JM		 2675
2676
2677void wpa_supplicant_update_config(struct wpa_supplicant *wpa_s)
2678{
849b5dc7
JM		 2679 if ((wpa_s->conf->changed_parameters & CFG_CHANGED_COUNTRY) &&
2680 wpa_s->conf->country[0] && wpa_s->conf->country[1]) {
2681 char country[3];
2682 country[0] = wpa_s->conf->country[0];
2683 country[1] = wpa_s->conf->country[1];
2684 country[2] = '\0';
2685 if (wpa_drv_set_country(wpa_s, country) < 0) {
2686 wpa_printf(MSG_ERROR, "Failed to set country code "
2687 "'%s'", country);
2688 }
2689 }
2690
611aea7d
JM		 2691#ifdef CONFIG_WPS
2692 wpas_wps_update_config(wpa_s);
2693#endif /* CONFIG_WPS */
2694
b22128ef
JM		 2695#ifdef CONFIG_P2P
2696 wpas_p2p_update_config(wpa_s);
2697#endif /* CONFIG_P2P */
2698
611aea7d
JM		 2699 wpa_s->conf->changed_parameters = 0;
2700}
2f9c6aa6
JM		 2701
2702
2703void ieee80211_sta_free_hw_features(struct hostapd_hw_modes *hw_features,
2704 size_t num_hw_features)
2705{
2706 size_t i;
2707
2708 if (hw_features == NULL)
2709 return;
2710
2711 for (i = 0; i < num_hw_features; i++) {
2712 os_free(hw_features[i].channels);
2713 os_free(hw_features[i].rates);
2714 }
2715
2716 os_free(hw_features);
2717}
0fb337c1
JM		 2718
2719
2720static void add_freq(int *freqs, int *num_freqs, int freq)
2721{
2722 int i;
2723
2724 for (i = 0; i < *num_freqs; i++) {
2725 if (freqs[i] == freq)
2726 return;
2727 }
2728
2729 freqs[*num_freqs] = freq;
2730 (*num_freqs)++;
2731}
2732
2733
2734static int * get_bss_freqs_in_ess(struct wpa_supplicant *wpa_s)
2735{
2736 struct wpa_bss *bss, *cbss;
2737 const int max_freqs = 10;
2738 int *freqs;
2739 int num_freqs = 0;
2740
2741 freqs = os_zalloc(sizeof(int) * (max_freqs + 1));
2742 if (freqs == NULL)
2743 return NULL;
2744
2745 cbss = wpa_s->current_bss;
2746
2747 dl_list_for_each(bss, &wpa_s->bss, struct wpa_bss, list) {
2748 if (bss == cbss)
2749 continue;
2750 if (bss->ssid_len == cbss->ssid_len &&
2751 os_memcmp(bss->ssid, cbss->ssid, bss->ssid_len) == 0 &&
2752 wpa_blacklist_get(wpa_s, bss->bssid) == NULL) {
2753 add_freq(freqs, &num_freqs, bss->freq);
2754 if (num_freqs == max_freqs)
2755 break;
2756 }
2757 }
2758
2759 if (num_freqs == 0) {
2760 os_free(freqs);
2761 freqs = NULL;
2762 }
2763
2764 return freqs;
2765}
2766
2767
2768void wpas_connection_failed(struct wpa_supplicant *wpa_s, const u8 *bssid)
2769{
2770 int timeout;
2771 int count;
2772 int *freqs = NULL;
2773
2774 /*
2775 * Add the failed BSSID into the blacklist and speed up next scan
2776 * attempt if there could be other APs that could accept association.
2777 * The current blacklist count indicates how many times we have tried
2778 * connecting to this AP and multiple attempts mean that other APs are
2779 * either not available or has already been tried, so that we can start
2780 * increasing the delay here to avoid constant scanning.
2781 */
2782 count = wpa_blacklist_add(wpa_s, bssid);
2783 if (count == 1 && wpa_s->current_bss) {
2784 /*
2785 * This BSS was not in the blacklist before. If there is
2786 * another BSS available for the same ESS, we should try that
2787 * next. Otherwise, we may as well try this one once more
2788 * before allowing other, likely worse, ESSes to be considered.
2789 */
2790 freqs = get_bss_freqs_in_ess(wpa_s);
2791 if (freqs) {
f049052b
BG		 2792 wpa_dbg(wpa_s, MSG_DEBUG, "Another BSS in this ESS "
2793 "has been seen; try it next");
0fb337c1
JM		 2794 wpa_blacklist_add(wpa_s, bssid);
2795 /*
2796 * On the next scan, go through only the known channels
2797 * used in this ESS based on previous scans to speed up
2798 * common load balancing use case.
2799 */
2800 os_free(wpa_s->next_scan_freqs);
2801 wpa_s->next_scan_freqs = freqs;
2802 }
2803 }
2804
2805 switch (count) {
2806 case 1:
2807 timeout = 100;
2808 break;
2809 case 2:
2810 timeout = 500;
2811 break;
2812 case 3:
2813 timeout = 1000;
2814 break;
2815 default:
2816 timeout = 5000;
2817 }
2818
2819 /*
2820 * TODO: if more than one possible AP is available in scan results,
2821 * could try the other ones before requesting a new scan.
2822 */
2823 wpa_supplicant_req_scan(wpa_s, timeout / 1000,
2824 1000 * (timeout % 1000));
2825}
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