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[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"
7d232e23 23#include "crypto/sha1.h"
6fc6879b
JM		 24#include "eapol_supp/eapol_supp_sm.h"
25#include "eap_peer/eap.h"
3ec97afe 26#include "eap_server/eap_methods.h"
3acb5005 27#include "rsn_supp/wpa.h"
6fc6879b 28#include "eloop.h"
6fc6879b
JM		 29#include "config.h"
30#include "l2_packet/l2_packet.h"
31#include "wpa_supplicant_i.h"
2d5b792d 32#include "driver_i.h"
6fc6879b 33#include "ctrl_iface.h"
6fc6879b 34#include "pcsc_funcs.h"
90973fb2 35#include "common/version.h"
3acb5005
JM		 36#include "rsn_supp/preauth.h"
37#include "rsn_supp/pmksa_cache.h"
90973fb2 38#include "common/wpa_ctrl.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"
04ea7b79 46#include "gas_query.h"
1f1b62a0 47#include "ap.h"
b22128ef 48#include "p2p_supplicant.h"
8bac466b 49#include "notify.h"
60b94c98 50#include "bgscan.h"
83922c2d 51#include "bss.h"
9ba9fa07 52#include "scan.h"
24f6497c 53#include "offchannel.h"
6fc6879b
JM		 54
55const char *wpa_supplicant_version =
56"wpa_supplicant v" VERSION_STR "\n"
9e074973 57"Copyright (c) 2003-2011, Jouni Malinen <j@w1.fi> and contributors";
6fc6879b
JM		 58
59const char *wpa_supplicant_license =
60"This program is free software. You can distribute it and/or modify it\n"
61"under the terms of the GNU General Public License version 2.\n"
62"\n"
63"Alternatively, this software may be distributed under the terms of the\n"
64"BSD license. See README and COPYING for more details.\n"
65#ifdef EAP_TLS_OPENSSL
66"\nThis product includes software developed by the OpenSSL Project\n"
67"for use in the OpenSSL Toolkit (http://www.openssl.org/)\n"
68#endif /* EAP_TLS_OPENSSL */
69;
70
71#ifndef CONFIG_NO_STDOUT_DEBUG
72/* Long text divided into parts in order to fit in C89 strings size limits. */
73const char *wpa_supplicant_full_license1 =
74"This program is free software; you can redistribute it and/or modify\n"
75"it under the terms of the GNU General Public License version 2 as\n"
76"published by the Free Software Foundation.\n"
77"\n"
78"This program is distributed in the hope that it will be useful,\n"
79"but WITHOUT ANY WARRANTY; without even the implied warranty of\n"
80"MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the\n"
81"GNU General Public License for more details.\n"
82"\n";
83const char *wpa_supplicant_full_license2 =
84"You should have received a copy of the GNU General Public License\n"
85"along with this program; if not, write to the Free Software\n"
86"Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA\n"
87"\n"
88"Alternatively, this software may be distributed under the terms of the\n"
89"BSD license.\n"
90"\n"
91"Redistribution and use in source and binary forms, with or without\n"
92"modification, are permitted provided that the following conditions are\n"
93"met:\n"
94"\n";
95const char *wpa_supplicant_full_license3 =
96"1. Redistributions of source code must retain the above copyright\n"
97" notice, this list of conditions and the following disclaimer.\n"
98"\n"
99"2. Redistributions in binary form must reproduce the above copyright\n"
100" notice, this list of conditions and the following disclaimer in the\n"
101" documentation and/or other materials provided with the distribution.\n"
102"\n";
103const char *wpa_supplicant_full_license4 =
104"3. Neither the name(s) of the above-listed copyright holder(s) nor the\n"
105" names of its contributors may be used to endorse or promote products\n"
106" derived from this software without specific prior written permission.\n"
107"\n"
108"THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS\n"
109"\"AS IS\" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT\n"
110"LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR\n"
111"A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT\n";
112const char *wpa_supplicant_full_license5 =
113"OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,\n"
114"SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT\n"
115"LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,\n"
116"DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY\n"
117"THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT\n"
118"(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE\n"
119"OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.\n"
120"\n";
121#endif /* CONFIG_NO_STDOUT_DEBUG */
122
6fc6879b
JM		 123extern int wpa_debug_level;
124extern int wpa_debug_show_keys;
125extern int wpa_debug_timestamp;
c5121837 126extern struct wpa_driver_ops *wpa_drivers[];
6fc6879b
JM		 127
128/* Configure default/group WEP keys for static WEP */
0194fedb 129int wpa_set_wep_keys(struct wpa_supplicant *wpa_s, struct wpa_ssid *ssid)
6fc6879b
JM		 130{
131 int i, set = 0;
132
133 for (i = 0; i < NUM_WEP_KEYS; i++) {
134 if (ssid->wep_key_len[i] == 0)
135 continue;
136
137 set = 1;
0382097e 138 wpa_drv_set_key(wpa_s, WPA_ALG_WEP, NULL,
da64c266 139 i, i == ssid->wep_tx_keyidx, NULL, 0,
6fc6879b
JM		 140 ssid->wep_key[i], ssid->wep_key_len[i]);
141 }
142
143 return set;
144}
145
146
147static int wpa_supplicant_set_wpa_none_key(struct wpa_supplicant *wpa_s,
148 struct wpa_ssid *ssid)
149{
150 u8 key[32];
151 size_t keylen;
71934751 152 enum wpa_alg alg;
6fc6879b
JM		 153 u8 seq[6] = { 0 };
154
155 /* IBSS/WPA-None uses only one key (Group) for both receiving and
156 * sending unicast and multicast packets. */
157
d7dcba70 158 if (ssid->mode != WPAS_MODE_IBSS) {
f049052b
BG		 159 wpa_msg(wpa_s, MSG_INFO, "WPA: Invalid mode %d (not "
160 "IBSS/ad-hoc) for WPA-None", ssid->mode);
6fc6879b
JM		 161 return -1;
162 }
163
164 if (!ssid->psk_set) {
f049052b
BG		 165 wpa_msg(wpa_s, MSG_INFO, "WPA: No PSK configured for "
166 "WPA-None");
6fc6879b
JM		 167 return -1;
168 }
169
170 switch (wpa_s->group_cipher) {
171 case WPA_CIPHER_CCMP:
172 os_memcpy(key, ssid->psk, 16);
173 keylen = 16;
174 alg = WPA_ALG_CCMP;
175 break;
176 case WPA_CIPHER_TKIP:
177 /* WPA-None uses the same Michael MIC key for both TX and RX */
178 os_memcpy(key, ssid->psk, 16 + 8);
179 os_memcpy(key + 16 + 8, ssid->psk + 16, 8);
180 keylen = 32;
181 alg = WPA_ALG_TKIP;
182 break;
183 default:
f049052b
BG		 184 wpa_msg(wpa_s, MSG_INFO, "WPA: Invalid group cipher %d for "
185 "WPA-None", wpa_s->group_cipher);
6fc6879b
JM		 186 return -1;
187 }
188
189 /* TODO: should actually remember the previously used seq#, both for TX
190 * and RX from each STA.. */
191
0382097e 192 return wpa_drv_set_key(wpa_s, alg, NULL, 0, 1, seq, 6, key, keylen);
6fc6879b
JM		 193}
194
195
196static void wpa_supplicant_timeout(void *eloop_ctx, void *timeout_ctx)
197{
198 struct wpa_supplicant *wpa_s = eloop_ctx;
199 const u8 *bssid = wpa_s->bssid;
a8e16edc 200 if (is_zero_ether_addr(bssid))
6fc6879b
JM		 201 bssid = wpa_s->pending_bssid;
202 wpa_msg(wpa_s, MSG_INFO, "Authentication with " MACSTR " timed out.",
203 MAC2STR(bssid));
204 wpa_blacklist_add(wpa_s, bssid);
205 wpa_sm_notify_disassoc(wpa_s->wpa);
206 wpa_supplicant_disassociate(wpa_s, WLAN_REASON_DEAUTH_LEAVING);
207 wpa_s->reassociate = 1;
48b84f18
BG		 208
209 /*
210 * If we timed out, the AP or the local radio may be busy.
211 * So, wait a second until scanning again.
212 */
213 wpa_supplicant_req_scan(wpa_s, 1, 0);
6fc6879b
JM		 214}
215
216
217/**
218 * wpa_supplicant_req_auth_timeout - Schedule a timeout for authentication
219 * @wpa_s: Pointer to wpa_supplicant data
220 * @sec: Number of seconds after which to time out authentication
221 * @usec: Number of microseconds after which to time out authentication
222 *
223 * This function is used to schedule a timeout for the current authentication
224 * attempt.
225 */
226void wpa_supplicant_req_auth_timeout(struct wpa_supplicant *wpa_s,
227 int sec, int usec)
228{
c2a04078
JM		 229 if (wpa_s->conf && wpa_s->conf->ap_scan == 0 &&
230 (wpa_s->drv_flags & WPA_DRIVER_FLAGS_WIRED))
6fc6879b
JM		 231 return;
232
f049052b 233 wpa_dbg(wpa_s, MSG_DEBUG, "Setting authentication timeout: %d sec "
6fc6879b
JM		 234 "%d usec", sec, usec);
235 eloop_cancel_timeout(wpa_supplicant_timeout, wpa_s, NULL);
236 eloop_register_timeout(sec, usec, wpa_supplicant_timeout, wpa_s, NULL);
237}
238
239
240/**
241 * wpa_supplicant_cancel_auth_timeout - Cancel authentication timeout
242 * @wpa_s: Pointer to wpa_supplicant data
243 *
244 * This function is used to cancel authentication timeout scheduled with
245 * wpa_supplicant_req_auth_timeout() and it is called when authentication has
246 * been completed.
247 */
248void wpa_supplicant_cancel_auth_timeout(struct wpa_supplicant *wpa_s)
249{
f049052b 250 wpa_dbg(wpa_s, MSG_DEBUG, "Cancelling authentication timeout");
6fc6879b
JM		 251 eloop_cancel_timeout(wpa_supplicant_timeout, wpa_s, NULL);
252 wpa_blacklist_del(wpa_s, wpa_s->bssid);
253}
254
255
256/**
257 * wpa_supplicant_initiate_eapol - Configure EAPOL state machine
258 * @wpa_s: Pointer to wpa_supplicant data
259 *
260 * This function is used to configure EAPOL state machine based on the selected
261 * authentication mode.
262 */
263void wpa_supplicant_initiate_eapol(struct wpa_supplicant *wpa_s)
264{
265#ifdef IEEE8021X_EAPOL
266 struct eapol_config eapol_conf;
267 struct wpa_ssid *ssid = wpa_s->current_ssid;
268
53895c3b 269#ifdef CONFIG_IBSS_RSN
d7dcba70 270 if (ssid->mode == WPAS_MODE_IBSS &&
53895c3b
JM		 271 wpa_s->key_mgmt != WPA_KEY_MGMT_NONE &&
272 wpa_s->key_mgmt != WPA_KEY_MGMT_WPA_NONE) {
273 /*
274 * RSN IBSS authentication is per-STA and we can disable the
275 * per-BSSID EAPOL authentication.
276 */
277 eapol_sm_notify_portControl(wpa_s->eapol, ForceAuthorized);
278 eapol_sm_notify_eap_success(wpa_s->eapol, TRUE);
279 eapol_sm_notify_eap_fail(wpa_s->eapol, FALSE);
280 return;
281 }
282#endif /* CONFIG_IBSS_RSN */
283
0a40ec6a
JM		 284 eapol_sm_notify_eap_success(wpa_s->eapol, FALSE);
285 eapol_sm_notify_eap_fail(wpa_s->eapol, FALSE);
286
6fc6879b
JM		 287 if (wpa_s->key_mgmt == WPA_KEY_MGMT_NONE ||
288 wpa_s->key_mgmt == WPA_KEY_MGMT_WPA_NONE)
289 eapol_sm_notify_portControl(wpa_s->eapol, ForceAuthorized);
290 else
291 eapol_sm_notify_portControl(wpa_s->eapol, Auto);
292
293 os_memset(&eapol_conf, 0, sizeof(eapol_conf));
294 if (wpa_s->key_mgmt == WPA_KEY_MGMT_IEEE8021X_NO_WPA) {
295 eapol_conf.accept_802_1x_keys = 1;
296 eapol_conf.required_keys = 0;
297 if (ssid->eapol_flags & EAPOL_FLAG_REQUIRE_KEY_UNICAST) {
298 eapol_conf.required_keys |= EAPOL_REQUIRE_KEY_UNICAST;
299 }
300 if (ssid->eapol_flags & EAPOL_FLAG_REQUIRE_KEY_BROADCAST) {
301 eapol_conf.required_keys |=
302 EAPOL_REQUIRE_KEY_BROADCAST;
303 }
304
c2a04078 305 if (wpa_s->conf && (wpa_s->drv_flags & WPA_DRIVER_FLAGS_WIRED))
6fc6879b 306 eapol_conf.required_keys = 0;
6fc6879b
JM		 307 }
308 if (wpa_s->conf)
309 eapol_conf.fast_reauth = wpa_s->conf->fast_reauth;
310 eapol_conf.workaround = ssid->eap_workaround;
56586197
JM		 311 eapol_conf.eap_disabled =
312 !wpa_key_mgmt_wpa_ieee8021x(wpa_s->key_mgmt) &&
ad08c363
JM		 313 wpa_s->key_mgmt != WPA_KEY_MGMT_IEEE8021X_NO_WPA &&
314 wpa_s->key_mgmt != WPA_KEY_MGMT_WPS;
6fc6879b
JM		 315 eapol_sm_notify_config(wpa_s->eapol, &ssid->eap, &eapol_conf);
316#endif /* IEEE8021X_EAPOL */
317}
318
319
320/**
321 * wpa_supplicant_set_non_wpa_policy - Set WPA parameters to non-WPA mode
322 * @wpa_s: Pointer to wpa_supplicant data
323 * @ssid: Configuration data for the network
324 *
325 * This function is used to configure WPA state machine and related parameters
326 * to a mode where WPA is not enabled. This is called as part of the
327 * authentication configuration when the selected network does not use WPA.
328 */
329void wpa_supplicant_set_non_wpa_policy(struct wpa_supplicant *wpa_s,
330 struct wpa_ssid *ssid)
331{
332 int i;
333
ad08c363
JM		 334 if (ssid->key_mgmt & WPA_KEY_MGMT_WPS)
335 wpa_s->key_mgmt = WPA_KEY_MGMT_WPS;
336 else if (ssid->key_mgmt & WPA_KEY_MGMT_IEEE8021X_NO_WPA)
6fc6879b
JM		 337 wpa_s->key_mgmt = WPA_KEY_MGMT_IEEE8021X_NO_WPA;
338 else
339 wpa_s->key_mgmt = WPA_KEY_MGMT_NONE;
340 wpa_sm_set_ap_wpa_ie(wpa_s->wpa, NULL, 0);
341 wpa_sm_set_ap_rsn_ie(wpa_s->wpa, NULL, 0);
342 wpa_sm_set_assoc_wpa_ie(wpa_s->wpa, NULL, 0);
343 wpa_s->pairwise_cipher = WPA_CIPHER_NONE;
344 wpa_s->group_cipher = WPA_CIPHER_NONE;
345 wpa_s->mgmt_group_cipher = 0;
346
347 for (i = 0; i < NUM_WEP_KEYS; i++) {
348 if (ssid->wep_key_len[i] > 5) {
349 wpa_s->pairwise_cipher = WPA_CIPHER_WEP104;
350 wpa_s->group_cipher = WPA_CIPHER_WEP104;
351 break;
352 } else if (ssid->wep_key_len[i] > 0) {
353 wpa_s->pairwise_cipher = WPA_CIPHER_WEP40;
354 wpa_s->group_cipher = WPA_CIPHER_WEP40;
355 break;
356 }
357 }
358
359 wpa_sm_set_param(wpa_s->wpa, WPA_PARAM_RSN_ENABLED, 0);
360 wpa_sm_set_param(wpa_s->wpa, WPA_PARAM_KEY_MGMT, wpa_s->key_mgmt);
361 wpa_sm_set_param(wpa_s->wpa, WPA_PARAM_PAIRWISE,
362 wpa_s->pairwise_cipher);
363 wpa_sm_set_param(wpa_s->wpa, WPA_PARAM_GROUP, wpa_s->group_cipher);
364#ifdef CONFIG_IEEE80211W
365 wpa_sm_set_param(wpa_s->wpa, WPA_PARAM_MGMT_GROUP,
366 wpa_s->mgmt_group_cipher);
367#endif /* CONFIG_IEEE80211W */
368
369 pmksa_cache_clear_current(wpa_s->wpa);
370}
371
372
6bf731e8
CL		 373static void free_hw_features(struct wpa_supplicant *wpa_s)
374{
375 int i;
376 if (wpa_s->hw.modes == NULL)
377 return;
378
379 for (i = 0; i < wpa_s->hw.num_modes; i++) {
380 os_free(wpa_s->hw.modes[i].channels);
381 os_free(wpa_s->hw.modes[i].rates);
382 }
383
384 os_free(wpa_s->hw.modes);
385 wpa_s->hw.modes = NULL;
386}
387
388
6fc6879b
JM		 389static void wpa_supplicant_cleanup(struct wpa_supplicant *wpa_s)
390{
60b94c98 391 bgscan_deinit(wpa_s);
6fc6879b
JM		 392 scard_deinit(wpa_s->scard);
393 wpa_s->scard = NULL;
394 wpa_sm_set_scard_ctx(wpa_s->wpa, NULL);
395 eapol_sm_register_scard_ctx(wpa_s->eapol, NULL);
396 l2_packet_deinit(wpa_s->l2);
397 wpa_s->l2 = NULL;
398 if (wpa_s->l2_br) {
399 l2_packet_deinit(wpa_s->l2_br);
400 wpa_s->l2_br = NULL;
401 }
402
403 if (wpa_s->ctrl_iface) {
404 wpa_supplicant_ctrl_iface_deinit(wpa_s->ctrl_iface);
405 wpa_s->ctrl_iface = NULL;
406 }
407 if (wpa_s->conf != NULL) {
8e56d189
JM		 408 struct wpa_ssid *ssid;
409 for (ssid = wpa_s->conf->ssid; ssid; ssid = ssid->next)
410 wpas_notify_network_removed(wpa_s, ssid);
6fc6879b
JM		 411 wpa_config_free(wpa_s->conf);
412 wpa_s->conf = NULL;
413 }
414
415 os_free(wpa_s->confname);
416 wpa_s->confname = NULL;
417
418 wpa_sm_set_eapol(wpa_s->wpa, NULL);
419 eapol_sm_deinit(wpa_s->eapol);
420 wpa_s->eapol = NULL;
421
422 rsn_preauth_deinit(wpa_s->wpa);
423
281ff0aa
GP		 424#ifdef CONFIG_TDLS
425 wpa_tdls_deinit(wpa_s->wpa);
426#endif /* CONFIG_TDLS */
427
6fc6879b
JM		 428 pmksa_candidate_free(wpa_s->wpa);
429 wpa_sm_deinit(wpa_s->wpa);
430 wpa_s->wpa = NULL;
431 wpa_blacklist_clear(wpa_s);
432
83922c2d 433 wpa_bss_deinit(wpa_s);
6fc6879b
JM		 434
435 wpa_supplicant_cancel_scan(wpa_s);
436 wpa_supplicant_cancel_auth_timeout(wpa_s);
01a17491
JM		 437 eloop_cancel_timeout(wpa_supplicant_stop_countermeasures, wpa_s, NULL);
438#ifdef CONFIG_DELAYED_MIC_ERROR_REPORT
439 eloop_cancel_timeout(wpa_supplicant_delayed_mic_error_report,
440 wpa_s, NULL);
441#endif /* CONFIG_DELAYED_MIC_ERROR_REPORT */
6fc6879b 442
116654ce 443 wpas_wps_deinit(wpa_s);
11ef8d35 444
1ff73338
JM		 445 wpabuf_free(wpa_s->pending_eapol_rx);
446 wpa_s->pending_eapol_rx = NULL;
447
11ef8d35
JM		 448#ifdef CONFIG_IBSS_RSN
449 ibss_rsn_deinit(wpa_s->ibss_rsn);
450 wpa_s->ibss_rsn = NULL;
451#endif /* CONFIG_IBSS_RSN */
c2a04078 452
e29853bb 453 sme_deinit(wpa_s);
2d5b792d
JM		 454
455#ifdef CONFIG_AP
456 wpa_supplicant_ap_deinit(wpa_s);
457#endif /* CONFIG_AP */
b22128ef
JM		 458
459#ifdef CONFIG_P2P
460 wpas_p2p_deinit(wpa_s);
461#endif /* CONFIG_P2P */
f47d639d 462
24f6497c
JM		 463#ifdef CONFIG_OFFCHANNEL
464 offchannel_deinit(wpa_s);
465#endif /* CONFIG_OFFCHANNEL */
466
a4cba8f1
LC		 467 wpa_supplicant_cancel_sched_scan(wpa_s);
468
f47d639d
JM		 469 os_free(wpa_s->next_scan_freqs);
470 wpa_s->next_scan_freqs = NULL;
04ea7b79
JM		 471
472 gas_query_deinit(wpa_s->gas);
473 wpa_s->gas = NULL;
6bf731e8
CL		 474
475 free_hw_features(wpa_s);
6fc6879b
JM		 476}
477
478
479/**
480 * wpa_clear_keys - Clear keys configured for the driver
481 * @wpa_s: Pointer to wpa_supplicant data
482 * @addr: Previously used BSSID or %NULL if not available
483 *
484 * This function clears the encryption keys that has been previously configured
485 * for the driver.
486 */
487void wpa_clear_keys(struct wpa_supplicant *wpa_s, const u8 *addr)
488{
6fc6879b
JM		 489 if (wpa_s->keys_cleared) {
490 /* Some drivers (e.g., ndiswrapper & NDIS drivers) seem to have
491 * timing issues with keys being cleared just before new keys
492 * are set or just after association or something similar. This
493 * shows up in group key handshake failing often because of the
494 * client not receiving the first encrypted packets correctly.
495 * Skipping some of the extra key clearing steps seems to help
496 * in completing group key handshake more reliably. */
f049052b
BG		 497 wpa_dbg(wpa_s, MSG_DEBUG, "No keys have been configured - "
498 "skip key clearing");
6fc6879b
JM		 499 return;
500 }
501
502 /* MLME-DELETEKEYS.request */
0382097e
JM		 503 wpa_drv_set_key(wpa_s, WPA_ALG_NONE, NULL, 0, 0, NULL, 0, NULL, 0);
504 wpa_drv_set_key(wpa_s, WPA_ALG_NONE, NULL, 1, 0, NULL, 0, NULL, 0);
505 wpa_drv_set_key(wpa_s, WPA_ALG_NONE, NULL, 2, 0, NULL, 0, NULL, 0);
506 wpa_drv_set_key(wpa_s, WPA_ALG_NONE, NULL, 3, 0, NULL, 0, NULL, 0);
0e27f655 507#ifdef CONFIG_IEEE80211W
0382097e
JM		 508 wpa_drv_set_key(wpa_s, WPA_ALG_NONE, NULL, 4, 0, NULL, 0, NULL, 0);
509 wpa_drv_set_key(wpa_s, WPA_ALG_NONE, NULL, 5, 0, NULL, 0, NULL, 0);
0e27f655 510#endif /* CONFIG_IEEE80211W */
6fc6879b
JM		 511 if (addr) {
512 wpa_drv_set_key(wpa_s, WPA_ALG_NONE, addr, 0, 0, NULL, 0, NULL,
513 0);
514 /* MLME-SETPROTECTION.request(None) */
515 wpa_drv_mlme_setprotection(
516 wpa_s, addr,
517 MLME_SETPROTECTION_PROTECT_TYPE_NONE,
518 MLME_SETPROTECTION_KEY_TYPE_PAIRWISE);
519 }
520 wpa_s->keys_cleared = 1;
521}
522
523
524/**
525 * wpa_supplicant_state_txt - Get the connection state name as a text string
526 * @state: State (wpa_state; WPA_*)
527 * Returns: The state name as a printable text string
528 */
71934751 529const char * wpa_supplicant_state_txt(enum wpa_states state)
6fc6879b
JM		 530{
531 switch (state) {
532 case WPA_DISCONNECTED:
533 return "DISCONNECTED";
534 case WPA_INACTIVE:
535 return "INACTIVE";
8401a6b0
JM		 536 case WPA_INTERFACE_DISABLED:
537 return "INTERFACE_DISABLED";
6fc6879b
JM		 538 case WPA_SCANNING:
539 return "SCANNING";
c2a04078
JM		 540 case WPA_AUTHENTICATING:
541 return "AUTHENTICATING";
6fc6879b
JM		 542 case WPA_ASSOCIATING:
543 return "ASSOCIATING";
544 case WPA_ASSOCIATED:
545 return "ASSOCIATED";
546 case WPA_4WAY_HANDSHAKE:
547 return "4WAY_HANDSHAKE";
548 case WPA_GROUP_HANDSHAKE:
549 return "GROUP_HANDSHAKE";
550 case WPA_COMPLETED:
551 return "COMPLETED";
552 default:
553 return "UNKNOWN";
554 }
555}
556
557
cfe53c9a
PS		 558#ifdef CONFIG_BGSCAN
559
560static void wpa_supplicant_start_bgscan(struct wpa_supplicant *wpa_s)
561{
0096c427
JM		 562 if (wpas_driver_bss_selection(wpa_s))
563 return;
cfe53c9a
PS		 564 if (wpa_s->current_ssid == wpa_s->bgscan_ssid)
565 return;
566
567 bgscan_deinit(wpa_s);
568 if (wpa_s->current_ssid && wpa_s->current_ssid->bgscan) {
569 if (bgscan_init(wpa_s, wpa_s->current_ssid)) {
570 wpa_dbg(wpa_s, MSG_DEBUG, "Failed to initialize "
571 "bgscan");
572 /*
573 * Live without bgscan; it is only used as a roaming
574 * optimization, so the initial connection is not
575 * affected.
576 */
577 } else
578 wpa_s->bgscan_ssid = wpa_s->current_ssid;
579 } else
580 wpa_s->bgscan_ssid = NULL;
581}
582
583
584static void wpa_supplicant_stop_bgscan(struct wpa_supplicant *wpa_s)
585{
586 if (wpa_s->bgscan_ssid != NULL) {
587 bgscan_deinit(wpa_s);
588 wpa_s->bgscan_ssid = NULL;
589 }
590}
591
592#endif /* CONFIG_BGSCAN */
593
594
6fc6879b
JM		 595/**
596 * wpa_supplicant_set_state - Set current connection state
597 * @wpa_s: Pointer to wpa_supplicant data
598 * @state: The new connection state
599 *
600 * This function is called whenever the connection state changes, e.g.,
601 * association is completed for WPA/WPA2 4-Way Handshake is started.
602 */
71934751
JM		 603void wpa_supplicant_set_state(struct wpa_supplicant *wpa_s,
604 enum wpa_states state)
6fc6879b 605{
27f43d8d
MH		 606 enum wpa_states old_state = wpa_s->wpa_state;
607
f049052b
BG		 608 wpa_dbg(wpa_s, MSG_DEBUG, "State: %s -> %s",
609 wpa_supplicant_state_txt(wpa_s->wpa_state),
610 wpa_supplicant_state_txt(state));
6fc6879b 611
cb8564b1
DW		 612 if (state != WPA_SCANNING)
613 wpa_supplicant_notify_scanning(wpa_s, 0);
614
6fc6879b
JM		 615 if (state == WPA_COMPLETED && wpa_s->new_connection) {
616#if defined(CONFIG_CTRL_IFACE) || !defined(CONFIG_NO_STDOUT_DEBUG)
617 struct wpa_ssid *ssid = wpa_s->current_ssid;
618 wpa_msg(wpa_s, MSG_INFO, WPA_EVENT_CONNECTED "- Connection to "
619 MACSTR " completed %s [id=%d id_str=%s]",
620 MAC2STR(wpa_s->bssid), wpa_s->reassociated_connection ?
621 "(reauth)" : "(auth)",
622 ssid ? ssid->id : -1,
623 ssid && ssid->id_str ? ssid->id_str : "");
624#endif /* CONFIG_CTRL_IFACE || !CONFIG_NO_STDOUT_DEBUG */
625 wpa_s->new_connection = 0;
626 wpa_s->reassociated_connection = 1;
627 wpa_drv_set_operstate(wpa_s, 1);
99ac2913
FF		 628#ifndef IEEE8021X_EAPOL
629 wpa_drv_set_supp_port(wpa_s, 1);
630#endif /* IEEE8021X_EAPOL */
17a4734d 631 wpa_s->after_wps = 0;
b22128ef
JM		 632#ifdef CONFIG_P2P
633 wpas_p2p_completed(wpa_s);
634#endif /* CONFIG_P2P */
6fc6879b
JM		 635 } else if (state == WPA_DISCONNECTED || state == WPA_ASSOCIATING ||
636 state == WPA_ASSOCIATED) {
637 wpa_s->new_connection = 1;
638 wpa_drv_set_operstate(wpa_s, 0);
99ac2913
FF		 639#ifndef IEEE8021X_EAPOL
640 wpa_drv_set_supp_port(wpa_s, 0);
641#endif /* IEEE8021X_EAPOL */
6fc6879b
JM		 642 }
643 wpa_s->wpa_state = state;
27f43d8d 644
cfe53c9a
PS		 645#ifdef CONFIG_BGSCAN
646 if (state == WPA_COMPLETED)
647 wpa_supplicant_start_bgscan(wpa_s);
648 else
649 wpa_supplicant_stop_bgscan(wpa_s);
650#endif /* CONFIG_BGSCAN */
651
5bbf9f10 652 if (wpa_s->wpa_state != old_state) {
27f43d8d 653 wpas_notify_state_changed(wpa_s, wpa_s->wpa_state, old_state);
5bbf9f10
PS		 654
655 if (wpa_s->wpa_state == WPA_COMPLETED ||
656 old_state == WPA_COMPLETED)
657 wpas_notify_auth_changed(wpa_s);
658 }
6fc6879b
JM		 659}
660
661
1a1bf008
JM		 662void wpa_supplicant_terminate_proc(struct wpa_global *global)
663{
664 int pending = 0;
665#ifdef CONFIG_WPS
666 struct wpa_supplicant *wpa_s = global->ifaces;
667 while (wpa_s) {
668 if (wpas_wps_terminate_pending(wpa_s) == 1)
669 pending = 1;
670 wpa_s = wpa_s->next;
671 }
672#endif /* CONFIG_WPS */
673 if (pending)
674 return;
675 eloop_terminate();
676}
677
678
0456ea16 679static void wpa_supplicant_terminate(int sig, void *signal_ctx)
6fc6879b 680{
0456ea16 681 struct wpa_global *global = signal_ctx;
6fc6879b
JM		 682 struct wpa_supplicant *wpa_s;
683 for (wpa_s = global->ifaces; wpa_s; wpa_s = wpa_s->next) {
684 wpa_msg(wpa_s, MSG_INFO, WPA_EVENT_TERMINATING "- signal %d "
685 "received", sig);
686 }
1a1bf008 687 wpa_supplicant_terminate_proc(global);
6fc6879b
JM		 688}
689
690
b22128ef 691void wpa_supplicant_clear_status(struct wpa_supplicant *wpa_s)
6fc6879b 692{
71934751 693 enum wpa_states old_state = wpa_s->wpa_state;
27f43d8d 694
6fc6879b
JM		 695 wpa_s->pairwise_cipher = 0;
696 wpa_s->group_cipher = 0;
697 wpa_s->mgmt_group_cipher = 0;
698 wpa_s->key_mgmt = 0;
8401a6b0
JM		 699 if (wpa_s->wpa_state != WPA_INTERFACE_DISABLED)
700 wpa_s->wpa_state = WPA_DISCONNECTED;
27f43d8d
MH		 701
702 if (wpa_s->wpa_state != old_state)
703 wpas_notify_state_changed(wpa_s, wpa_s->wpa_state, old_state);
6fc6879b
JM		 704}
705
706
707/**
708 * wpa_supplicant_reload_configuration - Reload configuration data
709 * @wpa_s: Pointer to wpa_supplicant data
710 * Returns: 0 on success or -1 if configuration parsing failed
711 *
712 * This function can be used to request that the configuration data is reloaded
713 * (e.g., after configuration file change). This function is reloading
714 * configuration only for one interface, so this may need to be called multiple
715 * times if %wpa_supplicant is controlling multiple interfaces and all
716 * interfaces need reconfiguration.
717 */
718int wpa_supplicant_reload_configuration(struct wpa_supplicant *wpa_s)
719{
720 struct wpa_config *conf;
721 int reconf_ctrl;
8bac466b
JM		 722 int old_ap_scan;
723
6fc6879b
JM		 724 if (wpa_s->confname == NULL)
725 return -1;
726 conf = wpa_config_read(wpa_s->confname);
727 if (conf == NULL) {
728 wpa_msg(wpa_s, MSG_ERROR, "Failed to parse the configuration "
729 "file '%s' - exiting", wpa_s->confname);
730 return -1;
731 }
611aea7d 732 conf->changed_parameters = (unsigned int) -1;
6fc6879b
JM		 733
734 reconf_ctrl = !!conf->ctrl_interface != !!wpa_s->conf->ctrl_interface
735 || (conf->ctrl_interface && wpa_s->conf->ctrl_interface &&
736 os_strcmp(conf->ctrl_interface,
737 wpa_s->conf->ctrl_interface) != 0);
738
739 if (reconf_ctrl && wpa_s->ctrl_iface) {
740 wpa_supplicant_ctrl_iface_deinit(wpa_s->ctrl_iface);
741 wpa_s->ctrl_iface = NULL;
742 }
743
744 eapol_sm_invalidate_cached_session(wpa_s->eapol);
7b7ce8aa
JM		 745 if (wpa_s->current_ssid) {
746 wpa_supplicant_deauthenticate(wpa_s,
747 WLAN_REASON_DEAUTH_LEAVING);
748 }
8bac466b 749
6fc6879b
JM		 750 /*
751 * TODO: should notify EAPOL SM about changes in opensc_engine_path,
752 * pkcs11_engine_path, pkcs11_module_path.
753 */
56586197 754 if (wpa_key_mgmt_wpa_psk(wpa_s->key_mgmt)) {
6fc6879b
JM		 755 /*
756 * Clear forced success to clear EAP state for next
757 * authentication.
758 */
759 eapol_sm_notify_eap_success(wpa_s->eapol, FALSE);
760 }
761 eapol_sm_notify_config(wpa_s->eapol, NULL, NULL);
762 wpa_sm_set_config(wpa_s->wpa, NULL);
d8a790b9 763 wpa_sm_pmksa_cache_flush(wpa_s->wpa, NULL);
6fc6879b
JM		 764 wpa_sm_set_fast_reauth(wpa_s->wpa, wpa_s->conf->fast_reauth);
765 rsn_preauth_deinit(wpa_s->wpa);
8bac466b
JM		 766
767 old_ap_scan = wpa_s->conf->ap_scan;
6fc6879b
JM		 768 wpa_config_free(wpa_s->conf);
769 wpa_s->conf = conf;
8bac466b
JM		 770 if (old_ap_scan != wpa_s->conf->ap_scan)
771 wpas_notify_ap_scan_changed(wpa_s);
772
6fc6879b
JM		 773 if (reconf_ctrl)
774 wpa_s->ctrl_iface = wpa_supplicant_ctrl_iface_init(wpa_s);
775
611aea7d
JM		 776 wpa_supplicant_update_config(wpa_s);
777
6fc6879b 778 wpa_supplicant_clear_status(wpa_s);
43a38635
JM		 779 if (wpa_supplicant_enabled_networks(wpa_s->conf)) {
780 wpa_s->reassociate = 1;
781 wpa_supplicant_req_scan(wpa_s, 0, 0);
782 }
f049052b 783 wpa_dbg(wpa_s, MSG_DEBUG, "Reconfiguration completed");
6fc6879b
JM		 784 return 0;
785}
786
787
0456ea16 788static void wpa_supplicant_reconfig(int sig, void *signal_ctx)
6fc6879b 789{
0456ea16 790 struct wpa_global *global = signal_ctx;
6fc6879b 791 struct wpa_supplicant *wpa_s;
6fc6879b 792 for (wpa_s = global->ifaces; wpa_s; wpa_s = wpa_s->next) {
f049052b
BG		 793 wpa_dbg(wpa_s, MSG_DEBUG, "Signal %d received - reconfiguring",
794 sig);
6fc6879b 795 if (wpa_supplicant_reload_configuration(wpa_s) < 0) {
1a1bf008 796 wpa_supplicant_terminate_proc(global);
6fc6879b
JM		 797 }
798 }
799}
800
801
508545f3 802enum wpa_cipher cipher_suite2driver(int cipher)
6fc6879b
JM		 803{
804 switch (cipher) {
805 case WPA_CIPHER_NONE:
806 return CIPHER_NONE;
807 case WPA_CIPHER_WEP40:
808 return CIPHER_WEP40;
809 case WPA_CIPHER_WEP104:
810 return CIPHER_WEP104;
811 case WPA_CIPHER_CCMP:
812 return CIPHER_CCMP;
813 case WPA_CIPHER_TKIP:
814 default:
815 return CIPHER_TKIP;
816 }
817}
818
819
508545f3 820enum wpa_key_mgmt key_mgmt2driver(int key_mgmt)
6fc6879b
JM		 821{
822 switch (key_mgmt) {
823 case WPA_KEY_MGMT_NONE:
824 return KEY_MGMT_NONE;
825 case WPA_KEY_MGMT_IEEE8021X_NO_WPA:
826 return KEY_MGMT_802_1X_NO_WPA;
827 case WPA_KEY_MGMT_IEEE8021X:
828 return KEY_MGMT_802_1X;
829 case WPA_KEY_MGMT_WPA_NONE:
830 return KEY_MGMT_WPA_NONE;
831 case WPA_KEY_MGMT_FT_IEEE8021X:
832 return KEY_MGMT_FT_802_1X;
833 case WPA_KEY_MGMT_FT_PSK:
834 return KEY_MGMT_FT_PSK;
56586197
JM		 835 case WPA_KEY_MGMT_IEEE8021X_SHA256:
836 return KEY_MGMT_802_1X_SHA256;
837 case WPA_KEY_MGMT_PSK_SHA256:
838 return KEY_MGMT_PSK_SHA256;
ad08c363
JM		 839 case WPA_KEY_MGMT_WPS:
840 return KEY_MGMT_WPS;
6fc6879b
JM		 841 case WPA_KEY_MGMT_PSK:
842 default:
843 return KEY_MGMT_PSK;
844 }
845}
846
847
848static int wpa_supplicant_suites_from_ai(struct wpa_supplicant *wpa_s,
849 struct wpa_ssid *ssid,
850 struct wpa_ie_data *ie)
851{
852 int ret = wpa_sm_parse_own_wpa_ie(wpa_s->wpa, ie);
853 if (ret) {
854 if (ret == -2) {
855 wpa_msg(wpa_s, MSG_INFO, "WPA: Failed to parse WPA IE "
856 "from association info");
857 }
858 return -1;
859 }
860
f049052b
BG		 861 wpa_dbg(wpa_s, MSG_DEBUG, "WPA: Using WPA IE from AssocReq to set "
862 "cipher suites");
6fc6879b
JM		 863 if (!(ie->group_cipher & ssid->group_cipher)) {
864 wpa_msg(wpa_s, MSG_INFO, "WPA: Driver used disabled group "
865 "cipher 0x%x (mask 0x%x) - reject",
866 ie->group_cipher, ssid->group_cipher);
867 return -1;
868 }
869 if (!(ie->pairwise_cipher & ssid->pairwise_cipher)) {
870 wpa_msg(wpa_s, MSG_INFO, "WPA: Driver used disabled pairwise "
871 "cipher 0x%x (mask 0x%x) - reject",
872 ie->pairwise_cipher, ssid->pairwise_cipher);
873 return -1;
874 }
875 if (!(ie->key_mgmt & ssid->key_mgmt)) {
876 wpa_msg(wpa_s, MSG_INFO, "WPA: Driver used disabled key "
877 "management 0x%x (mask 0x%x) - reject",
878 ie->key_mgmt, ssid->key_mgmt);
879 return -1;
880 }
881
882#ifdef CONFIG_IEEE80211W
0b60b0aa 883 if (!(ie->capabilities & WPA_CAPABILITY_MFPC) &&
70f8cc8e 884 ssid->ieee80211w == MGMT_FRAME_PROTECTION_REQUIRED) {
6fc6879b
JM		 885 wpa_msg(wpa_s, MSG_INFO, "WPA: Driver associated with an AP "
886 "that does not support management frame protection - "
887 "reject");
888 return -1;
889 }
890#endif /* CONFIG_IEEE80211W */
891
892 return 0;
893}
894
895
896/**
897 * wpa_supplicant_set_suites - Set authentication and encryption parameters
898 * @wpa_s: Pointer to wpa_supplicant data
899 * @bss: Scan results for the selected BSS, or %NULL if not available
900 * @ssid: Configuration data for the selected network
901 * @wpa_ie: Buffer for the WPA/RSN IE
902 * @wpa_ie_len: Maximum wpa_ie buffer size on input. This is changed to be the
903 * used buffer length in case the functions returns success.
904 * Returns: 0 on success or -1 on failure
905 *
906 * This function is used to configure authentication and encryption parameters
907 * based on the network configuration and scan result for the selected BSS (if
908 * available).
909 */
910int wpa_supplicant_set_suites(struct wpa_supplicant *wpa_s,
6fa81a3b 911 struct wpa_bss *bss, struct wpa_ssid *ssid,
6fc6879b
JM		 912 u8 *wpa_ie, size_t *wpa_ie_len)
913{
914 struct wpa_ie_data ie;
915 int sel, proto;
916 const u8 *bss_wpa, *bss_rsn;
917
918 if (bss) {
6fa81a3b
JM		 919 bss_wpa = wpa_bss_get_vendor_ie(bss, WPA_IE_VENDOR_TYPE);
920 bss_rsn = wpa_bss_get_ie(bss, WLAN_EID_RSN);
6fc6879b
JM		 921 } else
922 bss_wpa = bss_rsn = NULL;
923
924 if (bss_rsn && (ssid->proto & WPA_PROTO_RSN) &&
925 wpa_parse_wpa_ie(bss_rsn, 2 + bss_rsn[1], &ie) == 0 &&
926 (ie.group_cipher & ssid->group_cipher) &&
927 (ie.pairwise_cipher & ssid->pairwise_cipher) &&
928 (ie.key_mgmt & ssid->key_mgmt)) {
f049052b 929 wpa_dbg(wpa_s, MSG_DEBUG, "RSN: using IEEE 802.11i/D9.0");
6fc6879b
JM		 930 proto = WPA_PROTO_RSN;
931 } else if (bss_wpa && (ssid->proto & WPA_PROTO_WPA) &&
932 wpa_parse_wpa_ie(bss_wpa, 2 +bss_wpa[1], &ie) == 0 &&
933 (ie.group_cipher & ssid->group_cipher) &&
934 (ie.pairwise_cipher & ssid->pairwise_cipher) &&
935 (ie.key_mgmt & ssid->key_mgmt)) {
f049052b 936 wpa_dbg(wpa_s, MSG_DEBUG, "WPA: using IEEE 802.11i/D3.0");
6fc6879b
JM		 937 proto = WPA_PROTO_WPA;
938 } else if (bss) {
939 wpa_msg(wpa_s, MSG_WARNING, "WPA: Failed to select WPA/RSN");
940 return -1;
941 } else {
942 if (ssid->proto & WPA_PROTO_RSN)
943 proto = WPA_PROTO_RSN;
944 else
945 proto = WPA_PROTO_WPA;
946 if (wpa_supplicant_suites_from_ai(wpa_s, ssid, &ie) < 0) {
947 os_memset(&ie, 0, sizeof(ie));
948 ie.group_cipher = ssid->group_cipher;
949 ie.pairwise_cipher = ssid->pairwise_cipher;
950 ie.key_mgmt = ssid->key_mgmt;
951#ifdef CONFIG_IEEE80211W
952 ie.mgmt_group_cipher =
70f8cc8e 953 ssid->ieee80211w != NO_MGMT_FRAME_PROTECTION ?
6fc6879b
JM		 954 WPA_CIPHER_AES_128_CMAC : 0;
955#endif /* CONFIG_IEEE80211W */
f049052b
BG		 956 wpa_dbg(wpa_s, MSG_DEBUG, "WPA: Set cipher suites "
957 "based on configuration");
6fc6879b
JM		 958 } else
959 proto = ie.proto;
960 }
961
f049052b
BG		 962 wpa_dbg(wpa_s, MSG_DEBUG, "WPA: Selected cipher suites: group %d "
963 "pairwise %d key_mgmt %d proto %d",
964 ie.group_cipher, ie.pairwise_cipher, ie.key_mgmt, proto);
6fc6879b
JM		 965#ifdef CONFIG_IEEE80211W
966 if (ssid->ieee80211w) {
f049052b
BG		 967 wpa_dbg(wpa_s, MSG_DEBUG, "WPA: Selected mgmt group cipher %d",
968 ie.mgmt_group_cipher);
6fc6879b
JM		 969 }
970#endif /* CONFIG_IEEE80211W */
971
64fa840a 972 wpa_s->wpa_proto = proto;
6fc6879b
JM		 973 wpa_sm_set_param(wpa_s->wpa, WPA_PARAM_PROTO, proto);
974 wpa_sm_set_param(wpa_s->wpa, WPA_PARAM_RSN_ENABLED,
975 !!(ssid->proto & WPA_PROTO_RSN));
976
977 if (bss || !wpa_s->ap_ies_from_associnfo) {
978 if (wpa_sm_set_ap_wpa_ie(wpa_s->wpa, bss_wpa,
979 bss_wpa ? 2 + bss_wpa[1] : 0) ||
980 wpa_sm_set_ap_rsn_ie(wpa_s->wpa, bss_rsn,
981 bss_rsn ? 2 + bss_rsn[1] : 0))
982 return -1;
983 }
984
985 sel = ie.group_cipher & ssid->group_cipher;
986 if (sel & WPA_CIPHER_CCMP) {
987 wpa_s->group_cipher = WPA_CIPHER_CCMP;
f049052b 988 wpa_dbg(wpa_s, MSG_DEBUG, "WPA: using GTK CCMP");
6fc6879b
JM		 989 } else if (sel & WPA_CIPHER_TKIP) {
990 wpa_s->group_cipher = WPA_CIPHER_TKIP;
f049052b 991 wpa_dbg(wpa_s, MSG_DEBUG, "WPA: using GTK TKIP");
6fc6879b
JM		 992 } else if (sel & WPA_CIPHER_WEP104) {
993 wpa_s->group_cipher = WPA_CIPHER_WEP104;
f049052b 994 wpa_dbg(wpa_s, MSG_DEBUG, "WPA: using GTK WEP104");
6fc6879b
JM		 995 } else if (sel & WPA_CIPHER_WEP40) {
996 wpa_s->group_cipher = WPA_CIPHER_WEP40;
f049052b 997 wpa_dbg(wpa_s, MSG_DEBUG, "WPA: using GTK WEP40");
6fc6879b 998 } else {
f049052b
BG		 999 wpa_msg(wpa_s, MSG_WARNING, "WPA: Failed to select group "
1000 "cipher");
6fc6879b
JM		 1001 return -1;
1002 }
1003
1004 sel = ie.pairwise_cipher & ssid->pairwise_cipher;
1005 if (sel & WPA_CIPHER_CCMP) {
1006 wpa_s->pairwise_cipher = WPA_CIPHER_CCMP;
f049052b 1007 wpa_dbg(wpa_s, MSG_DEBUG, "WPA: using PTK CCMP");
6fc6879b
JM		 1008 } else if (sel & WPA_CIPHER_TKIP) {
1009 wpa_s->pairwise_cipher = WPA_CIPHER_TKIP;
f049052b 1010 wpa_dbg(wpa_s, MSG_DEBUG, "WPA: using PTK TKIP");
6fc6879b
JM		 1011 } else if (sel & WPA_CIPHER_NONE) {
1012 wpa_s->pairwise_cipher = WPA_CIPHER_NONE;
f049052b 1013 wpa_dbg(wpa_s, MSG_DEBUG, "WPA: using PTK NONE");
6fc6879b 1014 } else {
f049052b
BG		 1015 wpa_msg(wpa_s, MSG_WARNING, "WPA: Failed to select pairwise "
1016 "cipher");
6fc6879b
JM		 1017 return -1;
1018 }
1019
1020 sel = ie.key_mgmt & ssid->key_mgmt;
1021 if (0) {
1022#ifdef CONFIG_IEEE80211R
1023 } else if (sel & WPA_KEY_MGMT_FT_IEEE8021X) {
1024 wpa_s->key_mgmt = WPA_KEY_MGMT_FT_IEEE8021X;
f049052b 1025 wpa_dbg(wpa_s, MSG_DEBUG, "WPA: using KEY_MGMT FT/802.1X");
6fc6879b
JM		 1026 } else if (sel & WPA_KEY_MGMT_FT_PSK) {
1027 wpa_s->key_mgmt = WPA_KEY_MGMT_FT_PSK;
f049052b 1028 wpa_dbg(wpa_s, MSG_DEBUG, "WPA: using KEY_MGMT FT/PSK");
6fc6879b 1029#endif /* CONFIG_IEEE80211R */
56586197
JM		 1030#ifdef CONFIG_IEEE80211W
1031 } else if (sel & WPA_KEY_MGMT_IEEE8021X_SHA256) {
1032 wpa_s->key_mgmt = WPA_KEY_MGMT_IEEE8021X_SHA256;
f049052b 1033 wpa_dbg(wpa_s, MSG_DEBUG,
56586197
JM		 1034 "WPA: using KEY_MGMT 802.1X with SHA256");
1035 } else if (sel & WPA_KEY_MGMT_PSK_SHA256) {
1036 wpa_s->key_mgmt = WPA_KEY_MGMT_PSK_SHA256;
f049052b 1037 wpa_dbg(wpa_s, MSG_DEBUG,
56586197
JM		 1038 "WPA: using KEY_MGMT PSK with SHA256");
1039#endif /* CONFIG_IEEE80211W */
6fc6879b
JM		 1040 } else if (sel & WPA_KEY_MGMT_IEEE8021X) {
1041 wpa_s->key_mgmt = WPA_KEY_MGMT_IEEE8021X;
f049052b 1042 wpa_dbg(wpa_s, MSG_DEBUG, "WPA: using KEY_MGMT 802.1X");
6fc6879b
JM		 1043 } else if (sel & WPA_KEY_MGMT_PSK) {
1044 wpa_s->key_mgmt = WPA_KEY_MGMT_PSK;
f049052b 1045 wpa_dbg(wpa_s, MSG_DEBUG, "WPA: using KEY_MGMT WPA-PSK");
6fc6879b
JM		 1046 } else if (sel & WPA_KEY_MGMT_WPA_NONE) {
1047 wpa_s->key_mgmt = WPA_KEY_MGMT_WPA_NONE;
f049052b 1048 wpa_dbg(wpa_s, MSG_DEBUG, "WPA: using KEY_MGMT WPA-NONE");
6fc6879b 1049 } else {
f049052b
BG		 1050 wpa_msg(wpa_s, MSG_WARNING, "WPA: Failed to select "
1051 "authenticated key management type");
6fc6879b
JM		 1052 return -1;
1053 }
1054
1055 wpa_sm_set_param(wpa_s->wpa, WPA_PARAM_KEY_MGMT, wpa_s->key_mgmt);
1056 wpa_sm_set_param(wpa_s->wpa, WPA_PARAM_PAIRWISE,
1057 wpa_s->pairwise_cipher);
1058 wpa_sm_set_param(wpa_s->wpa, WPA_PARAM_GROUP, wpa_s->group_cipher);
1059
1060#ifdef CONFIG_IEEE80211W
1061 sel = ie.mgmt_group_cipher;
70f8cc8e 1062 if (ssid->ieee80211w == NO_MGMT_FRAME_PROTECTION ||
0b60b0aa 1063 !(ie.capabilities & WPA_CAPABILITY_MFPC))
6fc6879b
JM		 1064 sel = 0;
1065 if (sel & WPA_CIPHER_AES_128_CMAC) {
1066 wpa_s->mgmt_group_cipher = WPA_CIPHER_AES_128_CMAC;
f049052b 1067 wpa_dbg(wpa_s, MSG_DEBUG, "WPA: using MGMT group cipher "
6fc6879b
JM		 1068 "AES-128-CMAC");
1069 } else {
1070 wpa_s->mgmt_group_cipher = 0;
f049052b 1071 wpa_dbg(wpa_s, MSG_DEBUG, "WPA: not using MGMT group cipher");
6fc6879b
JM		 1072 }
1073 wpa_sm_set_param(wpa_s->wpa, WPA_PARAM_MGMT_GROUP,
1074 wpa_s->mgmt_group_cipher);
e820cf95 1075 wpa_sm_set_param(wpa_s->wpa, WPA_PARAM_MFP, ssid->ieee80211w);
6fc6879b
JM		 1076#endif /* CONFIG_IEEE80211W */
1077
1078 if (wpa_sm_set_assoc_wpa_ie_default(wpa_s->wpa, wpa_ie, wpa_ie_len)) {
f049052b 1079 wpa_msg(wpa_s, MSG_WARNING, "WPA: Failed to generate WPA IE");
6fc6879b
JM		 1080 return -1;
1081 }
1082
0bf927a0 1083 if (wpa_key_mgmt_wpa_psk(ssid->key_mgmt)) {
6fc6879b 1084 wpa_sm_set_pmk(wpa_s->wpa, ssid->psk, PMK_LEN);
7d232e23
ZC		 1085#ifndef CONFIG_NO_PBKDF2
1086 if (bss && ssid->bssid_set && ssid->ssid_len == 0 &&
1087 ssid->passphrase) {
1088 u8 psk[PMK_LEN];
1089 pbkdf2_sha1(ssid->passphrase, (char *) bss->ssid,
1090 bss->ssid_len, 4096, psk, PMK_LEN);
1091 wpa_hexdump_key(MSG_MSGDUMP, "PSK (from passphrase)",
1092 psk, PMK_LEN);
1093 wpa_sm_set_pmk(wpa_s->wpa, psk, PMK_LEN);
1094 }
1095#endif /* CONFIG_NO_PBKDF2 */
1096 } else
6fc6879b
JM		 1097 wpa_sm_set_pmk_from_pmksa(wpa_s->wpa);
1098
1099 return 0;
1100}
1101
1102
1103/**
1104 * wpa_supplicant_associate - Request association
1105 * @wpa_s: Pointer to wpa_supplicant data
1106 * @bss: Scan results for the selected BSS, or %NULL if not available
1107 * @ssid: Configuration data for the selected network
1108 *
1109 * This function is used to request %wpa_supplicant to associate with a BSS.
1110 */
1111void wpa_supplicant_associate(struct wpa_supplicant *wpa_s,
6fa81a3b 1112 struct wpa_bss *bss, struct wpa_ssid *ssid)
6fc6879b 1113{
5f3a6aa0 1114 u8 wpa_ie[200];
6fc6879b 1115 size_t wpa_ie_len;
8bac466b 1116 int use_crypt, ret, i, bssid_changed;
abd9fafa 1117 int algs = WPA_AUTH_ALG_OPEN;
71934751 1118 enum wpa_cipher cipher_pairwise, cipher_group;
6fc6879b
JM		 1119 struct wpa_driver_associate_params params;
1120 int wep_keys_set = 0;
1121 struct wpa_driver_capa capa;
1122 int assoc_failed = 0;
8bac466b 1123 struct wpa_ssid *old_ssid;
6fc6879b 1124
78177a00
JM		 1125#ifdef CONFIG_IBSS_RSN
1126 ibss_rsn_deinit(wpa_s->ibss_rsn);
1127 wpa_s->ibss_rsn = NULL;
1128#endif /* CONFIG_IBSS_RSN */
1129
2c5d725c
JM		 1130 if (ssid->mode == WPAS_MODE_AP || ssid->mode == WPAS_MODE_P2P_GO ||
1131 ssid->mode == WPAS_MODE_P2P_GROUP_FORMATION) {
1581b38b
JM		 1132#ifdef CONFIG_AP
1133 if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_AP)) {
f049052b
BG		 1134 wpa_msg(wpa_s, MSG_INFO, "Driver does not support AP "
1135 "mode");
1581b38b
JM		 1136 return;
1137 }
1138 wpa_supplicant_create_ap(wpa_s, ssid);
8f770587 1139 wpa_s->current_bss = bss;
1581b38b 1140#else /* CONFIG_AP */
f049052b
BG		 1141 wpa_msg(wpa_s, MSG_ERROR, "AP mode support not included in "
1142 "the build");
1581b38b
JM		 1143#endif /* CONFIG_AP */
1144 return;
1145 }
1146
52c9e6f3 1147#ifdef CONFIG_TDLS
95cb2d88
JM		 1148 if (bss)
1149 wpa_tdls_ap_ies(wpa_s->wpa, (const u8 *) (bss + 1),
1150 bss->ie_len);
52c9e6f3
JM		 1151#endif /* CONFIG_TDLS */
1152
5cc4d64b
JM		 1153 if ((wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME) &&
1154 ssid->mode == IEEE80211_MODE_INFRA) {
c2a04078
JM		 1155 sme_authenticate(wpa_s, bss, ssid);
1156 return;
1157 }
1158
0c80427d 1159 os_memset(&params, 0, sizeof(params));
6fc6879b 1160 wpa_s->reassociate = 0;
22628eca 1161 if (bss && !wpas_driver_bss_selection(wpa_s)) {
6fc6879b 1162#ifdef CONFIG_IEEE80211R
6fa81a3b 1163 const u8 *ie, *md = NULL;
6fc6879b 1164#endif /* CONFIG_IEEE80211R */
6fc6879b
JM		 1165 wpa_msg(wpa_s, MSG_INFO, "Trying to associate with " MACSTR
1166 " (SSID='%s' freq=%d MHz)", MAC2STR(bss->bssid),
6fa81a3b 1167 wpa_ssid_txt(bss->ssid, bss->ssid_len), bss->freq);
8bac466b 1168 bssid_changed = !is_zero_ether_addr(wpa_s->bssid);
6fc6879b
JM		 1169 os_memset(wpa_s->bssid, 0, ETH_ALEN);
1170 os_memcpy(wpa_s->pending_bssid, bss->bssid, ETH_ALEN);
8bac466b
JM		 1171 if (bssid_changed)
1172 wpas_notify_bssid_changed(wpa_s);
6fc6879b 1173#ifdef CONFIG_IEEE80211R
6fa81a3b 1174 ie = wpa_bss_get_ie(bss, WLAN_EID_MOBILITY_DOMAIN);
6fc6879b
JM		 1175 if (ie && ie[1] >= MOBILITY_DOMAIN_ID_LEN)
1176 md = ie + 2;
e7846b68 1177 wpa_sm_set_ft_params(wpa_s->wpa, ie, ie ? 2 + ie[1] : 0);
91a05482
JM		 1178 if (md) {
1179 /* Prepare for the next transition */
76b7981d 1180 wpa_ft_prepare_auth_request(wpa_s->wpa, ie);
91a05482 1181 }
6fc6879b 1182#endif /* CONFIG_IEEE80211R */
24c23d1b
JM		 1183#ifdef CONFIG_WPS
1184 } else if ((ssid->ssid == NULL || ssid->ssid_len == 0) &&
1185 wpa_s->conf->ap_scan == 2 &&
1186 (ssid->key_mgmt & WPA_KEY_MGMT_WPS)) {
1187 /* Use ap_scan==1 style network selection to find the network
1188 */
1189 wpa_s->scan_req = 2;
1190 wpa_s->reassociate = 1;
1191 wpa_supplicant_req_scan(wpa_s, 0, 0);
1192 return;
1193#endif /* CONFIG_WPS */
6fc6879b
JM		 1194 } else {
1195 wpa_msg(wpa_s, MSG_INFO, "Trying to associate with SSID '%s'",
1196 wpa_ssid_txt(ssid->ssid, ssid->ssid_len));
1197 os_memset(wpa_s->pending_bssid, 0, ETH_ALEN);
1198 }
a4cba8f1 1199 wpa_supplicant_cancel_sched_scan(wpa_s);
6fc6879b
JM		 1200 wpa_supplicant_cancel_scan(wpa_s);
1201
1202 /* Starting new association, so clear the possibly used WPA IE from the
1203 * previous association. */
1204 wpa_sm_set_assoc_wpa_ie(wpa_s->wpa, NULL, 0);
1205
1206#ifdef IEEE8021X_EAPOL
1207 if (ssid->key_mgmt & WPA_KEY_MGMT_IEEE8021X_NO_WPA) {
1208 if (ssid->leap) {
1209 if (ssid->non_leap == 0)
abd9fafa 1210 algs = WPA_AUTH_ALG_LEAP;
6fc6879b 1211 else
abd9fafa 1212 algs |= WPA_AUTH_ALG_LEAP;
6fc6879b
JM		 1213 }
1214 }
1215#endif /* IEEE8021X_EAPOL */
f049052b 1216 wpa_dbg(wpa_s, MSG_DEBUG, "Automatic auth_alg selection: 0x%x", algs);
6fc6879b 1217 if (ssid->auth_alg) {
abd9fafa 1218 algs = ssid->auth_alg;
f049052b
BG		 1219 wpa_dbg(wpa_s, MSG_DEBUG, "Overriding auth_alg selection: "
1220 "0x%x", algs);
6fc6879b 1221 }
6fc6879b 1222
6fa81a3b
JM		 1223 if (bss && (wpa_bss_get_vendor_ie(bss, WPA_IE_VENDOR_TYPE) ||
1224 wpa_bss_get_ie(bss, WLAN_EID_RSN)) &&
0bf927a0 1225 wpa_key_mgmt_wpa(ssid->key_mgmt)) {
6fc6879b
JM		 1226 int try_opportunistic;
1227 try_opportunistic = ssid->proactive_key_caching &&
1228 (ssid->proto & WPA_PROTO_RSN);
1229 if (pmksa_cache_set_current(wpa_s->wpa, NULL, bss->bssid,
1230 wpa_s->current_ssid,
1231 try_opportunistic) == 0)
1232 eapol_sm_notify_pmkid_attempt(wpa_s->eapol, 1);
1233 wpa_ie_len = sizeof(wpa_ie);
1234 if (wpa_supplicant_set_suites(wpa_s, bss, ssid,
1235 wpa_ie, &wpa_ie_len)) {
f049052b
BG		 1236 wpa_msg(wpa_s, MSG_WARNING, "WPA: Failed to set WPA "
1237 "key management and encryption suites");
6fc6879b
JM		 1238 return;
1239 }
0bf927a0 1240 } else if (wpa_key_mgmt_wpa_any(ssid->key_mgmt)) {
6fc6879b
JM		 1241 wpa_ie_len = sizeof(wpa_ie);
1242 if (wpa_supplicant_set_suites(wpa_s, NULL, ssid,
1243 wpa_ie, &wpa_ie_len)) {
f049052b
BG		 1244 wpa_msg(wpa_s, MSG_WARNING, "WPA: Failed to set WPA "
1245 "key management and encryption suites (no "
1246 "scan results)");
6fc6879b
JM		 1247 return;
1248 }
ad08c363
JM		 1249#ifdef CONFIG_WPS
1250 } else if (ssid->key_mgmt & WPA_KEY_MGMT_WPS) {
b01c18a8
JM		 1251 struct wpabuf *wps_ie;
1252 wps_ie = wps_build_assoc_req_ie(wpas_wps_get_req_type(ssid));
ad08c363
JM		 1253 if (wps_ie && wpabuf_len(wps_ie) <= sizeof(wpa_ie)) {
1254 wpa_ie_len = wpabuf_len(wps_ie);
1255 os_memcpy(wpa_ie, wpabuf_head(wps_ie), wpa_ie_len);
24386985
JM		 1256 } else
1257 wpa_ie_len = 0;
ad08c363
JM		 1258 wpabuf_free(wps_ie);
1259 wpa_supplicant_set_non_wpa_policy(wpa_s, ssid);
0c80427d
JM		 1260 if (!bss || (bss->caps & IEEE80211_CAP_PRIVACY))
1261 params.wps = WPS_MODE_PRIVACY;
1262 else
1263 params.wps = WPS_MODE_OPEN;
cf546f1a 1264 wpa_s->wpa_proto = 0;
ad08c363 1265#endif /* CONFIG_WPS */
6fc6879b
JM		 1266 } else {
1267 wpa_supplicant_set_non_wpa_policy(wpa_s, ssid);
1268 wpa_ie_len = 0;
cf546f1a 1269 wpa_s->wpa_proto = 0;
6fc6879b
JM		 1270 }
1271
5f3a6aa0
JM		 1272#ifdef CONFIG_P2P
1273 if (wpa_s->global->p2p) {
1274 u8 *pos;
1275 size_t len;
1276 int res;
1277 int p2p_group;
1278 p2p_group = wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_CAPABLE;
1279 pos = wpa_ie + wpa_ie_len;
1280 len = sizeof(wpa_ie) - wpa_ie_len;
4c08c0bd 1281 res = wpas_p2p_assoc_req_ie(wpa_s, bss, pos, len, p2p_group);
5f3a6aa0
JM		 1282 if (res >= 0)
1283 wpa_ie_len += res;
1284 }
72044390
JM		 1285
1286 wpa_s->cross_connect_disallowed = 0;
1287 if (bss) {
1288 struct wpabuf *p2p;
1289 p2p = wpa_bss_get_vendor_ie_multi(bss, P2P_IE_VENDOR_TYPE);
1290 if (p2p) {
1291 wpa_s->cross_connect_disallowed =
1292 p2p_get_cross_connect_disallowed(p2p);
1293 wpabuf_free(p2p);
f049052b
BG		 1294 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: WLAN AP %s cross "
1295 "connection",
1296 wpa_s->cross_connect_disallowed ?
1297 "disallows" : "allows");
72044390
JM		 1298 }
1299 }
5f3a6aa0
JM		 1300#endif /* CONFIG_P2P */
1301
92cbcf91
JM		 1302#ifdef CONFIG_INTERWORKING
1303 if (wpa_s->conf->interworking) {
1304 u8 *pos = wpa_ie;
1305 if (wpa_ie_len > 0 && pos[0] == WLAN_EID_RSN)
1306 pos += 2 + pos[1];
1307 os_memmove(pos + 6, pos, wpa_ie_len - (pos - wpa_ie));
1308 wpa_ie_len += 6;
1309 *pos++ = WLAN_EID_EXT_CAPAB;
1310 *pos++ = 4;
1311 *pos++ = 0x00;
1312 *pos++ = 0x00;
1313 *pos++ = 0x00;
1314 *pos++ = 0x80; /* Bit 31 - Interworking */
1315 }
1316#endif /* CONFIG_INTERWORKING */
1317
6fc6879b
JM		 1318 wpa_clear_keys(wpa_s, bss ? bss->bssid : NULL);
1319 use_crypt = 1;
1320 cipher_pairwise = cipher_suite2driver(wpa_s->pairwise_cipher);
1321 cipher_group = cipher_suite2driver(wpa_s->group_cipher);
1322 if (wpa_s->key_mgmt == WPA_KEY_MGMT_NONE ||
1323 wpa_s->key_mgmt == WPA_KEY_MGMT_IEEE8021X_NO_WPA) {
1324 if (wpa_s->key_mgmt == WPA_KEY_MGMT_NONE)
1325 use_crypt = 0;
1326 if (wpa_set_wep_keys(wpa_s, ssid)) {
1327 use_crypt = 1;
1328 wep_keys_set = 1;
1329 }
1330 }
ad08c363
JM		 1331 if (wpa_s->key_mgmt == WPA_KEY_MGMT_WPS)
1332 use_crypt = 0;
6fc6879b
JM		 1333
1334#ifdef IEEE8021X_EAPOL
1335 if (wpa_s->key_mgmt == WPA_KEY_MGMT_IEEE8021X_NO_WPA) {
1336 if ((ssid->eapol_flags &
1337 (EAPOL_FLAG_REQUIRE_KEY_UNICAST |
1338 EAPOL_FLAG_REQUIRE_KEY_BROADCAST)) == 0 &&
1339 !wep_keys_set) {
1340 use_crypt = 0;
1341 } else {
1342 /* Assume that dynamic WEP-104 keys will be used and
1343 * set cipher suites in order for drivers to expect
1344 * encryption. */
1345 cipher_pairwise = cipher_group = CIPHER_WEP104;
1346 }
1347 }
1348#endif /* IEEE8021X_EAPOL */
1349
1350 if (wpa_s->key_mgmt == WPA_KEY_MGMT_WPA_NONE) {
1351 /* Set the key before (and later after) association */
1352 wpa_supplicant_set_wpa_none_key(wpa_s, ssid);
1353 }
1354
6fc6879b 1355 wpa_supplicant_set_state(wpa_s, WPA_ASSOCIATING);
6fc6879b 1356 if (bss) {
6fa81a3b
JM		 1357 params.ssid = bss->ssid;
1358 params.ssid_len = bss->ssid_len;
22628eca
JM		 1359 if (!wpas_driver_bss_selection(wpa_s)) {
1360 params.bssid = bss->bssid;
1361 params.freq = bss->freq;
1362 }
6fc6879b
JM		 1363 } else {
1364 params.ssid = ssid->ssid;
1365 params.ssid_len = ssid->ssid_len;
1366 }
d7dcba70
JM		 1367 if (ssid->mode == WPAS_MODE_IBSS && ssid->frequency > 0 &&
1368 params.freq == 0)
6fc6879b
JM		 1369 params.freq = ssid->frequency; /* Initial channel for IBSS */
1370 params.wpa_ie = wpa_ie;
1371 params.wpa_ie_len = wpa_ie_len;
1372 params.pairwise_suite = cipher_pairwise;
1373 params.group_suite = cipher_group;
1374 params.key_mgmt_suite = key_mgmt2driver(wpa_s->key_mgmt);
64fa840a 1375 params.wpa_proto = wpa_s->wpa_proto;
6fc6879b
JM		 1376 params.auth_alg = algs;
1377 params.mode = ssid->mode;
1378 for (i = 0; i < NUM_WEP_KEYS; i++) {
1379 if (ssid->wep_key_len[i])
1380 params.wep_key[i] = ssid->wep_key[i];
1381 params.wep_key_len[i] = ssid->wep_key_len[i];
1382 }
1383 params.wep_tx_keyidx = ssid->wep_tx_keyidx;
1384
c2a04078 1385 if ((wpa_s->drv_flags & WPA_DRIVER_FLAGS_4WAY_HANDSHAKE) &&
6fc6879b
JM		 1386 (params.key_mgmt_suite == KEY_MGMT_PSK ||
1387 params.key_mgmt_suite == KEY_MGMT_FT_PSK)) {
1388 params.passphrase = ssid->passphrase;
1389 if (ssid->psk_set)
1390 params.psk = ssid->psk;
1391 }
1392
36b15723
JM		 1393 params.drop_unencrypted = use_crypt;
1394
6fc6879b 1395#ifdef CONFIG_IEEE80211W
70f8cc8e
JM		 1396 params.mgmt_frame_protection = ssid->ieee80211w;
1397 if (ssid->ieee80211w != NO_MGMT_FRAME_PROTECTION && bss) {
6fa81a3b 1398 const u8 *rsn = wpa_bss_get_ie(bss, WLAN_EID_RSN);
97d3497e
JM		 1399 struct wpa_ie_data ie;
1400 if (rsn && wpa_parse_wpa_ie(rsn, 2 + rsn[1], &ie) == 0 &&
1401 ie.capabilities &
1402 (WPA_CAPABILITY_MFPC | WPA_CAPABILITY_MFPR)) {
f049052b
BG		 1403 wpa_dbg(wpa_s, MSG_DEBUG, "WPA: Selected AP supports "
1404 "MFP: require MFP");
97d3497e
JM		 1405 params.mgmt_frame_protection =
1406 MGMT_FRAME_PROTECTION_REQUIRED;
1407 }
1408 }
6fc6879b
JM		 1409#endif /* CONFIG_IEEE80211W */
1410
ffad8858 1411 params.p2p = ssid->p2p_group;
6e3f4b89 1412
eea2fd9e
JM		 1413 if (wpa_s->parent->set_sta_uapsd)
1414 params.uapsd = wpa_s->parent->sta_uapsd;
1415 else
1416 params.uapsd = -1;
1417
17fbb751 1418 ret = wpa_drv_associate(wpa_s, &params);
6fc6879b
JM		 1419 if (ret < 0) {
1420 wpa_msg(wpa_s, MSG_INFO, "Association request to the driver "
1421 "failed");
871f4dd0
JM		 1422 if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_SANE_ERROR_CODES) {
1423 /*
1424 * The driver is known to mean what is saying, so we
1425 * can stop right here; the association will not
1426 * succeed.
1427 */
1428 wpas_connection_failed(wpa_s, wpa_s->pending_bssid);
1429 os_memset(wpa_s->pending_bssid, 0, ETH_ALEN);
1430 return;
1431 }
6fc6879b
JM		 1432 /* try to continue anyway; new association will be tried again
1433 * after timeout */
1434 assoc_failed = 1;
1435 }
1436
1437 if (wpa_s->key_mgmt == WPA_KEY_MGMT_WPA_NONE) {
1438 /* Set the key after the association just in case association
1439 * cleared the previously configured key. */
1440 wpa_supplicant_set_wpa_none_key(wpa_s, ssid);
1441 /* No need to timeout authentication since there is no key
1442 * management. */
1443 wpa_supplicant_cancel_auth_timeout(wpa_s);
1444 wpa_supplicant_set_state(wpa_s, WPA_COMPLETED);
53895c3b 1445#ifdef CONFIG_IBSS_RSN
d7dcba70 1446 } else if (ssid->mode == WPAS_MODE_IBSS &&
53895c3b
JM		 1447 wpa_s->key_mgmt != WPA_KEY_MGMT_NONE &&
1448 wpa_s->key_mgmt != WPA_KEY_MGMT_WPA_NONE) {
1449 /*
1450 * RSN IBSS authentication is per-STA and we can disable the
1451 * per-BSSID authentication.
1452 */
1453 wpa_supplicant_cancel_auth_timeout(wpa_s);
53895c3b 1454#endif /* CONFIG_IBSS_RSN */
6fc6879b
JM		 1455 } else {
1456 /* Timeout for IEEE 802.11 authentication and association */
1d3c75b3
DW		 1457 int timeout = 60;
1458
1459 if (assoc_failed) {
1460 /* give IBSS a bit more time */
d7dcba70 1461 timeout = ssid->mode == WPAS_MODE_IBSS ? 10 : 5;
1d3c75b3
DW		 1462 } else if (wpa_s->conf->ap_scan == 1) {
1463 /* give IBSS a bit more time */
d7dcba70 1464 timeout = ssid->mode == WPAS_MODE_IBSS ? 20 : 10;
1d3c75b3 1465 }
6fc6879b
JM		 1466 wpa_supplicant_req_auth_timeout(wpa_s, timeout, 0);
1467 }
1468
1469 if (wep_keys_set && wpa_drv_get_capa(wpa_s, &capa) == 0 &&
1470 capa.flags & WPA_DRIVER_FLAGS_SET_KEYS_AFTER_ASSOC) {
1471 /* Set static WEP keys again */
1472 wpa_set_wep_keys(wpa_s, ssid);
1473 }
1474
1475 if (wpa_s->current_ssid && wpa_s->current_ssid != ssid) {
1476 /*
1477 * Do not allow EAP session resumption between different
1478 * network configurations.
1479 */
1480 eapol_sm_invalidate_cached_session(wpa_s->eapol);
1481 }
8bac466b 1482 old_ssid = wpa_s->current_ssid;
6fc6879b 1483 wpa_s->current_ssid = ssid;
8f770587 1484 wpa_s->current_bss = bss;
6fc6879b
JM		 1485 wpa_supplicant_rsn_supp_set_config(wpa_s, wpa_s->current_ssid);
1486 wpa_supplicant_initiate_eapol(wpa_s);
8bac466b
JM		 1487 if (old_ssid != wpa_s->current_ssid)
1488 wpas_notify_network_changed(wpa_s);
6fc6879b
JM		 1489}
1490
1491
09f58c09
JM		 1492static void wpa_supplicant_clear_connection(struct wpa_supplicant *wpa_s,
1493 const u8 *addr)
1494{
1495 struct wpa_ssid *old_ssid;
1496
1497 wpa_clear_keys(wpa_s, addr);
1498 wpa_supplicant_mark_disassoc(wpa_s);
1499 old_ssid = wpa_s->current_ssid;
1500 wpa_s->current_ssid = NULL;
1501 wpa_s->current_bss = NULL;
1502 wpa_sm_set_config(wpa_s->wpa, NULL);
1503 eapol_sm_notify_config(wpa_s->eapol, NULL, NULL);
1504 if (old_ssid != wpa_s->current_ssid)
1505 wpas_notify_network_changed(wpa_s);
1506 eloop_cancel_timeout(wpa_supplicant_timeout, wpa_s, NULL);
1507}
1508
1509
6fc6879b
JM		 1510/**
1511 * wpa_supplicant_disassociate - Disassociate the current connection
1512 * @wpa_s: Pointer to wpa_supplicant data
1513 * @reason_code: IEEE 802.11 reason code for the disassociate frame
1514 *
1515 * This function is used to request %wpa_supplicant to disassociate with the
1516 * current AP.
1517 */
1518void wpa_supplicant_disassociate(struct wpa_supplicant *wpa_s,
1519 int reason_code)
1520{
1521 u8 *addr = NULL;
8bac466b 1522
a8e16edc 1523 if (!is_zero_ether_addr(wpa_s->bssid)) {
17fbb751 1524 wpa_drv_disassociate(wpa_s, wpa_s->bssid, reason_code);
6fc6879b
JM		 1525 addr = wpa_s->bssid;
1526 }
09f58c09
JM		 1527
1528 wpa_supplicant_clear_connection(wpa_s, addr);
6fc6879b
JM		 1529}
1530
1531
1532/**
1533 * wpa_supplicant_deauthenticate - Deauthenticate the current connection
1534 * @wpa_s: Pointer to wpa_supplicant data
1535 * @reason_code: IEEE 802.11 reason code for the deauthenticate frame
1536 *
073ab58f 1537 * This function is used to request %wpa_supplicant to deauthenticate from the
6fc6879b
JM		 1538 * current AP.
1539 */
1540void wpa_supplicant_deauthenticate(struct wpa_supplicant *wpa_s,
1541 int reason_code)
1542{
1543 u8 *addr = NULL;
8bac466b 1544
a8e16edc 1545 if (!is_zero_ether_addr(wpa_s->bssid)) {
17fbb751 1546 wpa_drv_deauthenticate(wpa_s, wpa_s->bssid, reason_code);
6fc6879b
JM		 1547 addr = wpa_s->bssid;
1548 }
09f58c09
JM		 1549
1550 wpa_supplicant_clear_connection(wpa_s, addr);
6fc6879b
JM		 1551}
1552
1553
86b89452
WS		 1554/**
1555 * wpa_supplicant_enable_network - Mark a configured network as enabled
1556 * @wpa_s: wpa_supplicant structure for a network interface
1557 * @ssid: wpa_ssid structure for a configured network or %NULL
1558 *
1559 * Enables the specified network or all networks if no network specified.
1560 */
1561void wpa_supplicant_enable_network(struct wpa_supplicant *wpa_s,
1562 struct wpa_ssid *ssid)
1563{
1564 struct wpa_ssid *other_ssid;
1565 int was_disabled;
1566
1567 if (ssid == NULL) {
4dac0245
JM		 1568 for (other_ssid = wpa_s->conf->ssid; other_ssid;
1569 other_ssid = other_ssid->next) {
1570 if (other_ssid->disabled == 2)
1571 continue; /* do not change persistent P2P group
1572 * data */
86b89452
WS		 1573 if (other_ssid == wpa_s->current_ssid &&
1574 other_ssid->disabled)
1575 wpa_s->reassociate = 1;
1576
1577 was_disabled = other_ssid->disabled;
1578
1579 other_ssid->disabled = 0;
1580
1581 if (was_disabled != other_ssid->disabled)
1582 wpas_notify_network_enabled_changed(
1583 wpa_s, other_ssid);
86b89452
WS		 1584 }
1585 if (wpa_s->reassociate)
1586 wpa_supplicant_req_scan(wpa_s, 0, 0);
4dac0245 1587 } else if (ssid->disabled && ssid->disabled != 2) {
adc8d4a7
KM		 1588 if (wpa_s->current_ssid == NULL) {
1589 /*
1590 * Try to reassociate since there is no current
1591 * configuration and a new network was made available.
1592 */
1593 wpa_s->reassociate = 1;
1594 wpa_supplicant_req_scan(wpa_s, 0, 0);
1595 }
86b89452
WS		 1596
1597 was_disabled = ssid->disabled;
1598
1599 ssid->disabled = 0;
1600
1601 if (was_disabled != ssid->disabled)
1602 wpas_notify_network_enabled_changed(wpa_s, ssid);
1603 }
1604}
1605
1606
1607/**
1608 * wpa_supplicant_disable_network - Mark a configured network as disabled
1609 * @wpa_s: wpa_supplicant structure for a network interface
1610 * @ssid: wpa_ssid structure for a configured network or %NULL
1611 *
1612 * Disables the specified network or all networks if no network specified.
1613 */
1614void wpa_supplicant_disable_network(struct wpa_supplicant *wpa_s,
1615 struct wpa_ssid *ssid)
1616{
1617 struct wpa_ssid *other_ssid;
1618 int was_disabled;
1619
1620 if (ssid == NULL) {
4dac0245
JM		 1621 for (other_ssid = wpa_s->conf->ssid; other_ssid;
1622 other_ssid = other_ssid->next) {
86b89452 1623 was_disabled = other_ssid->disabled;
4dac0245
JM		 1624 if (was_disabled == 2)
1625 continue; /* do not change persistent P2P group
1626 * data */
86b89452
WS		 1627
1628 other_ssid->disabled = 1;
1629
1630 if (was_disabled != other_ssid->disabled)
1631 wpas_notify_network_enabled_changed(
1632 wpa_s, other_ssid);
86b89452
WS		 1633 }
1634 if (wpa_s->current_ssid)
1635 wpa_supplicant_disassociate(
1636 wpa_s, WLAN_REASON_DEAUTH_LEAVING);
4dac0245 1637 } else if (ssid->disabled != 2) {
86b89452
WS		 1638 if (ssid == wpa_s->current_ssid)
1639 wpa_supplicant_disassociate(
1640 wpa_s, WLAN_REASON_DEAUTH_LEAVING);
1641
1642 was_disabled = ssid->disabled;
1643
1644 ssid->disabled = 1;
1645
1646 if (was_disabled != ssid->disabled)
1647 wpas_notify_network_enabled_changed(wpa_s, ssid);
1648 }
1649}
1650
1651
1652/**
1653 * wpa_supplicant_select_network - Attempt association with a network
1654 * @wpa_s: wpa_supplicant structure for a network interface
1655 * @ssid: wpa_ssid structure for a configured network or %NULL for any network
1656 */
1657void wpa_supplicant_select_network(struct wpa_supplicant *wpa_s,
1658 struct wpa_ssid *ssid)
1659{
1660
1661 struct wpa_ssid *other_ssid;
1662
1663 if (ssid && ssid != wpa_s->current_ssid && wpa_s->current_ssid)
1664 wpa_supplicant_disassociate(
1665 wpa_s, WLAN_REASON_DEAUTH_LEAVING);
1666
1667 /*
1668 * Mark all other networks disabled or mark all networks enabled if no
1669 * network specified.
1670 */
4dac0245
JM		 1671 for (other_ssid = wpa_s->conf->ssid; other_ssid;
1672 other_ssid = other_ssid->next) {
86b89452 1673 int was_disabled = other_ssid->disabled;
4dac0245
JM		 1674 if (was_disabled == 2)
1675 continue; /* do not change persistent P2P group data */
86b89452
WS		 1676
1677 other_ssid->disabled = ssid ? (ssid->id != other_ssid->id) : 0;
1678
1679 if (was_disabled != other_ssid->disabled)
1680 wpas_notify_network_enabled_changed(wpa_s, other_ssid);
86b89452 1681 }
2a6f78fb
JJ		 1682
1683 if (ssid && ssid == wpa_s->current_ssid && wpa_s->current_ssid) {
1684 /* We are already associated with the selected network */
1685 wpa_printf(MSG_DEBUG, "Already associated with the "
1686 "selected network - do nothing");
1687 return;
1688 }
1689
7dcdcfd6 1690 wpa_s->connect_without_scan = NULL;
86b89452
WS		 1691 wpa_s->disconnected = 0;
1692 wpa_s->reassociate = 1;
1693 wpa_supplicant_req_scan(wpa_s, 0, 0);
1694
a1641d26
JM		 1695 if (ssid)
1696 wpas_notify_network_selected(wpa_s, ssid);
86b89452
WS		 1697}
1698
1699
1700/**
1701 * wpa_supplicant_set_ap_scan - Set AP scan mode for interface
1702 * @wpa_s: wpa_supplicant structure for a network interface
1703 * @ap_scan: AP scan mode
1704 * Returns: 0 if succeed or -1 if ap_scan has an invalid value
1705 *
1706 */
1707int wpa_supplicant_set_ap_scan(struct wpa_supplicant *wpa_s, int ap_scan)
1708{
1709
1710 int old_ap_scan;
1711
1712 if (ap_scan < 0 || ap_scan > 2)
1713 return -1;
1714
48f8e036
DS		 1715#ifdef ANDROID
1716 if (ap_scan == 2 && ap_scan != wpa_s->conf->ap_scan &&
1717 wpa_s->wpa_state >= WPA_ASSOCIATING &&
1718 wpa_s->wpa_state < WPA_COMPLETED) {
1719 wpa_printf(MSG_ERROR, "ap_scan = %d (%d) rejected while "
1720 "associating", wpa_s->conf->ap_scan, ap_scan);
1721 return 0;
1722 }
1723#endif /* ANDROID */
1724
86b89452
WS		 1725 old_ap_scan = wpa_s->conf->ap_scan;
1726 wpa_s->conf->ap_scan = ap_scan;
1727
1728 if (old_ap_scan != wpa_s->conf->ap_scan)
1729 wpas_notify_ap_scan_changed(wpa_s);
1730
1731 return 0;
1732}
1733
1734
78633c37
SL		 1735/**
1736 * wpa_supplicant_set_bss_expiration_age - Set BSS entry expiration age
1737 * @wpa_s: wpa_supplicant structure for a network interface
1738 * @expire_age: Expiration age in seconds
1739 * Returns: 0 if succeed or -1 if expire_age has an invalid value
1740 *
1741 */
1742int wpa_supplicant_set_bss_expiration_age(struct wpa_supplicant *wpa_s,
1743 unsigned int bss_expire_age)
1744{
1745 if (bss_expire_age < 10) {
1746 wpa_msg(wpa_s, MSG_ERROR, "Invalid bss expiration age %u",
1747 bss_expire_age);
1748 return -1;
1749 }
1750 wpa_msg(wpa_s, MSG_DEBUG, "Setting bss expiration age: %d sec",
1751 bss_expire_age);
1752 wpa_s->conf->bss_expiration_age = bss_expire_age;
1753
1754 return 0;
1755}
1756
1757
1758/**
1759 * wpa_supplicant_set_bss_expiration_count - Set BSS entry expiration scan count
1760 * @wpa_s: wpa_supplicant structure for a network interface
1761 * @expire_count: number of scans after which an unseen BSS is reclaimed
1762 * Returns: 0 if succeed or -1 if expire_count has an invalid value
1763 *
1764 */
1765int wpa_supplicant_set_bss_expiration_count(struct wpa_supplicant *wpa_s,
1766 unsigned int bss_expire_count)
1767{
1768 if (bss_expire_count < 1) {
1769 wpa_msg(wpa_s, MSG_ERROR, "Invalid bss expiration count %u",
1770 bss_expire_count);
1771 return -1;
1772 }
1773 wpa_msg(wpa_s, MSG_DEBUG, "Setting bss expiration scan count: %u",
1774 bss_expire_count);
1775 wpa_s->conf->bss_expiration_scan_count = bss_expire_count;
1776
1777 return 0;
1778}
1779
1780
86b89452
WS		 1781/**
1782 * wpa_supplicant_set_debug_params - Set global debug params
1783 * @global: wpa_global structure
1784 * @debug_level: debug level
1785 * @debug_timestamp: determines if show timestamp in debug data
1786 * @debug_show_keys: determines if show keys in debug data
1787 * Returns: 0 if succeed or -1 if debug_level has wrong value
1788 */
1789int wpa_supplicant_set_debug_params(struct wpa_global *global, int debug_level,
1790 int debug_timestamp, int debug_show_keys)
1791{
1792
1793 int old_level, old_timestamp, old_show_keys;
1794
1795 /* check for allowed debuglevels */
14dc0011
PS		 1796 if (debug_level != MSG_EXCESSIVE &&
1797 debug_level != MSG_MSGDUMP &&
86b89452
WS		 1798 debug_level != MSG_DEBUG &&
1799 debug_level != MSG_INFO &&
1800 debug_level != MSG_WARNING &&
1801 debug_level != MSG_ERROR)
1802 return -1;
1803
1804 old_level = wpa_debug_level;
1805 old_timestamp = wpa_debug_timestamp;
1806 old_show_keys = wpa_debug_show_keys;
1807
1808 wpa_debug_level = debug_level;
1809 wpa_debug_timestamp = debug_timestamp ? 1 : 0;
1810 wpa_debug_show_keys = debug_show_keys ? 1 : 0;
1811
db9133ac
WS		 1812 if (wpa_debug_level != old_level)
1813 wpas_notify_debug_level_changed(global);
1814 if (wpa_debug_timestamp != old_timestamp)
1815 wpas_notify_debug_timestamp_changed(global);
1816 if (wpa_debug_show_keys != old_show_keys)
1817 wpas_notify_debug_show_keys_changed(global);
86b89452
WS		 1818
1819 return 0;
1820}
1821
1822
6fc6879b
JM		 1823/**
1824 * wpa_supplicant_get_ssid - Get a pointer to the current network structure
1825 * @wpa_s: Pointer to wpa_supplicant data
1826 * Returns: A pointer to the current network structure or %NULL on failure
1827 */
1828struct wpa_ssid * wpa_supplicant_get_ssid(struct wpa_supplicant *wpa_s)
1829{
1830 struct wpa_ssid *entry;
1831 u8 ssid[MAX_SSID_LEN];
1832 int res;
1833 size_t ssid_len;
1834 u8 bssid[ETH_ALEN];
1835 int wired;
1836
17fbb751
JM		 1837 res = wpa_drv_get_ssid(wpa_s, ssid);
1838 if (res < 0) {
1839 wpa_msg(wpa_s, MSG_WARNING, "Could not read SSID from "
1840 "driver");
1841 return NULL;
6fc6879b 1842 }
17fbb751 1843 ssid_len = res;
6fc6879b 1844
17fbb751 1845 if (wpa_drv_get_bssid(wpa_s, bssid) < 0) {
f049052b
BG		 1846 wpa_msg(wpa_s, MSG_WARNING, "Could not read BSSID from "
1847 "driver");
6fc6879b
JM		 1848 return NULL;
1849 }
1850
c2a04078
JM		 1851 wired = wpa_s->conf->ap_scan == 0 &&
1852 (wpa_s->drv_flags & WPA_DRIVER_FLAGS_WIRED);
6fc6879b
JM		 1853
1854 entry = wpa_s->conf->ssid;
1855 while (entry) {
1856 if (!entry->disabled &&
1857 ((ssid_len == entry->ssid_len &&
1858 os_memcmp(ssid, entry->ssid, ssid_len) == 0) || wired) &&
1859 (!entry->bssid_set ||
1860 os_memcmp(bssid, entry->bssid, ETH_ALEN) == 0))
1861 return entry;
24c23d1b
JM		 1862#ifdef CONFIG_WPS
1863 if (!entry->disabled &&
1864 (entry->key_mgmt & WPA_KEY_MGMT_WPS) &&
1865 (entry->ssid == NULL || entry->ssid_len == 0) &&
1866 (!entry->bssid_set ||
1867 os_memcmp(bssid, entry->bssid, ETH_ALEN) == 0))
1868 return entry;
1869#endif /* CONFIG_WPS */
7d232e23
ZC		 1870
1871 if (!entry->disabled && entry->bssid_set &&
1872 entry->ssid_len == 0 &&
1873 os_memcmp(bssid, entry->bssid, ETH_ALEN) == 0)
1874 return entry;
1875
6fc6879b
JM		 1876 entry = entry->next;
1877 }
1878
1879 return NULL;
1880}
1881
1882
7756114f
JM		 1883static int select_driver(struct wpa_supplicant *wpa_s, int i)
1884{
1885 struct wpa_global *global = wpa_s->global;
1886
1887 if (wpa_drivers[i]->global_init && global->drv_priv[i] == NULL) {
1888 global->drv_priv[i] = wpa_drivers[i]->global_init();
1889 if (global->drv_priv[i] == NULL) {
1890 wpa_printf(MSG_ERROR, "Failed to initialize driver "
1891 "'%s'", wpa_drivers[i]->name);
1892 return -1;
1893 }
1894 }
1895
1896 wpa_s->driver = wpa_drivers[i];
1897 wpa_s->global_drv_priv = global->drv_priv[i];
1898
1899 return 0;
1900}
1901
1902
6fc6879b
JM		 1903static int wpa_supplicant_set_driver(struct wpa_supplicant *wpa_s,
1904 const char *name)
1905{
1906 int i;
362f781e 1907 size_t len;
74b1c84a 1908 const char *pos, *driver = name;
6fc6879b
JM		 1909
1910 if (wpa_s == NULL)
1911 return -1;
1912
c5121837 1913 if (wpa_drivers[0] == NULL) {
f049052b
BG		 1914 wpa_msg(wpa_s, MSG_ERROR, "No driver interfaces build into "
1915 "wpa_supplicant");
6fc6879b
JM		 1916 return -1;
1917 }
1918
1919 if (name == NULL) {
1920 /* default to first driver in the list */
7756114f 1921 return select_driver(wpa_s, 0);
6fc6879b
JM		 1922 }
1923
74b1c84a
SO		 1924 do {
1925 pos = os_strchr(driver, ',');
1926 if (pos)
1927 len = pos - driver;
1928 else
1929 len = os_strlen(driver);
1930
1931 for (i = 0; wpa_drivers[i]; i++) {
1932 if (os_strlen(wpa_drivers[i]->name) == len &&
1933 os_strncmp(driver, wpa_drivers[i]->name, len) ==
7756114f
JM		 1934 0)
1935 return select_driver(wpa_s, i);
6fc6879b 1936 }
74b1c84a
SO		 1937
1938 driver = pos + 1;
1939 } while (pos);
6fc6879b 1940
f049052b 1941 wpa_msg(wpa_s, MSG_ERROR, "Unsupported driver '%s'", name);
6fc6879b
JM		 1942 return -1;
1943}
1944
1945
a8e0505b
JM		 1946/**
1947 * wpa_supplicant_rx_eapol - Deliver a received EAPOL frame to wpa_supplicant
1948 * @ctx: Context pointer (wpa_s); this is the ctx variable registered
1949 * with struct wpa_driver_ops::init()
1950 * @src_addr: Source address of the EAPOL frame
1951 * @buf: EAPOL data starting from the EAPOL header (i.e., no Ethernet header)
1952 * @len: Length of the EAPOL data
1953 *
1954 * This function is called for each received EAPOL frame. Most driver
1955 * interfaces rely on more generic OS mechanism for receiving frames through
1956 * l2_packet, but if such a mechanism is not available, the driver wrapper may
1957 * take care of received EAPOL frames and deliver them to the core supplicant
1958 * code by calling this function.
1959 */
6fc6879b
JM		 1960void wpa_supplicant_rx_eapol(void *ctx, const u8 *src_addr,
1961 const u8 *buf, size_t len)
1962{
1963 struct wpa_supplicant *wpa_s = ctx;
1964
f049052b 1965 wpa_dbg(wpa_s, MSG_DEBUG, "RX EAPOL from " MACSTR, MAC2STR(src_addr));
6fc6879b
JM		 1966 wpa_hexdump(MSG_MSGDUMP, "RX EAPOL", buf, len);
1967
1ff73338
JM		 1968 if (wpa_s->wpa_state < WPA_ASSOCIATED) {
1969 /*
1970 * There is possible race condition between receiving the
1971 * association event and the EAPOL frame since they are coming
1972 * through different paths from the driver. In order to avoid
1973 * issues in trying to process the EAPOL frame before receiving
1974 * association information, lets queue it for processing until
1975 * the association event is received.
1976 */
f049052b
BG		 1977 wpa_dbg(wpa_s, MSG_DEBUG, "Not associated - Delay processing "
1978 "of received EAPOL frame");
1ff73338
JM		 1979 wpabuf_free(wpa_s->pending_eapol_rx);
1980 wpa_s->pending_eapol_rx = wpabuf_alloc_copy(buf, len);
1981 if (wpa_s->pending_eapol_rx) {
1982 os_get_time(&wpa_s->pending_eapol_rx_time);
1983 os_memcpy(wpa_s->pending_eapol_rx_src, src_addr,
1984 ETH_ALEN);
1985 }
1986 return;
1987 }
1988
db149ac9
JM		 1989#ifdef CONFIG_AP
1990 if (wpa_s->ap_iface) {
1991 wpa_supplicant_ap_rx_eapol(wpa_s, src_addr, buf, len);
1992 return;
1993 }
1994#endif /* CONFIG_AP */
1995
6fc6879b 1996 if (wpa_s->key_mgmt == WPA_KEY_MGMT_NONE) {
f049052b
BG		 1997 wpa_dbg(wpa_s, MSG_DEBUG, "Ignored received EAPOL frame since "
1998 "no key management is configured");
6fc6879b
JM		 1999 return;
2000 }
2001
2002 if (wpa_s->eapol_received == 0 &&
c2a04078 2003 (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_4WAY_HANDSHAKE) ||
56586197 2004 !wpa_key_mgmt_wpa_psk(wpa_s->key_mgmt) ||
9c972abb
JM		 2005 wpa_s->wpa_state != WPA_COMPLETED) &&
2006 (wpa_s->current_ssid == NULL ||
2007 wpa_s->current_ssid->mode != IEEE80211_MODE_IBSS)) {
6fc6879b
JM		 2008 /* Timeout for completing IEEE 802.1X and WPA authentication */
2009 wpa_supplicant_req_auth_timeout(
2010 wpa_s,
56586197 2011 (wpa_key_mgmt_wpa_ieee8021x(wpa_s->key_mgmt) ||
a6f06dab
AT		 2012 wpa_s->key_mgmt == WPA_KEY_MGMT_IEEE8021X_NO_WPA ||
2013 wpa_s->key_mgmt == WPA_KEY_MGMT_WPS) ?
6fc6879b
JM		 2014 70 : 10, 0);
2015 }
2016 wpa_s->eapol_received++;
2017
2018 if (wpa_s->countermeasures) {
f049052b
BG		 2019 wpa_msg(wpa_s, MSG_INFO, "WPA: Countermeasures - dropped "
2020 "EAPOL packet");
6fc6879b
JM		 2021 return;
2022 }
2023
8be18440
JM		 2024#ifdef CONFIG_IBSS_RSN
2025 if (wpa_s->current_ssid &&
d7dcba70 2026 wpa_s->current_ssid->mode == WPAS_MODE_IBSS) {
8be18440
JM		 2027 ibss_rsn_rx_eapol(wpa_s->ibss_rsn, src_addr, buf, len);
2028 return;
2029 }
2030#endif /* CONFIG_IBSS_RSN */
2031
6fc6879b
JM		 2032 /* Source address of the incoming EAPOL frame could be compared to the
2033 * current BSSID. However, it is possible that a centralized
2034 * Authenticator could be using another MAC address than the BSSID of
2035 * an AP, so just allow any address to be used for now. The replies are
2036 * still sent to the current BSSID (if available), though. */
2037
2038 os_memcpy(wpa_s->last_eapol_src, src_addr, ETH_ALEN);
56586197 2039 if (!wpa_key_mgmt_wpa_psk(wpa_s->key_mgmt) &&
6fc6879b
JM		 2040 eapol_sm_rx_eapol(wpa_s->eapol, src_addr, buf, len) > 0)
2041 return;
2042 wpa_drv_poll(wpa_s);
c2a04078 2043 if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_4WAY_HANDSHAKE))
6fc6879b 2044 wpa_sm_rx_eapol(wpa_s->wpa, src_addr, buf, len);
56586197 2045 else if (wpa_key_mgmt_wpa_ieee8021x(wpa_s->key_mgmt)) {
6fc6879b
JM		 2046 /*
2047 * Set portValid = TRUE here since we are going to skip 4-way
2048 * handshake processing which would normally set portValid. We
2049 * need this to allow the EAPOL state machines to be completed
2050 * without going through EAPOL-Key handshake.
2051 */
2052 eapol_sm_notify_portValid(wpa_s->eapol, TRUE);
2053 }
2054}
2055
2056
6fc6879b
JM		 2057/**
2058 * wpa_supplicant_driver_init - Initialize driver interface parameters
2059 * @wpa_s: Pointer to wpa_supplicant data
2060 * Returns: 0 on success, -1 on failure
2061 *
2062 * This function is called to initialize driver interface parameters.
2063 * wpa_drv_init() must have been called before this function to initialize the
2064 * driver interface.
2065 */
2066int wpa_supplicant_driver_init(struct wpa_supplicant *wpa_s)
2067{
2068 static int interface_count = 0;
2069
2070 if (wpa_s->driver->send_eapol) {
2071 const u8 *addr = wpa_drv_get_mac_addr(wpa_s);
2072 if (addr)
2073 os_memcpy(wpa_s->own_addr, addr, ETH_ALEN);
fdadd5fe
JM		 2074 } else if (!(wpa_s->drv_flags &
2075 WPA_DRIVER_FLAGS_P2P_DEDICATED_INTERFACE)) {
6fc6879b
JM		 2076 wpa_s->l2 = l2_packet_init(wpa_s->ifname,
2077 wpa_drv_get_mac_addr(wpa_s),
2078 ETH_P_EAPOL,
2079 wpa_supplicant_rx_eapol, wpa_s, 0);
2080 if (wpa_s->l2 == NULL)
2081 return -1;
fdadd5fe
JM		 2082 } else {
2083 const u8 *addr = wpa_drv_get_mac_addr(wpa_s);
2084 if (addr)
2085 os_memcpy(wpa_s->own_addr, addr, ETH_ALEN);
6fc6879b
JM		 2086 }
2087
2088 if (wpa_s->l2 && l2_packet_get_own_addr(wpa_s->l2, wpa_s->own_addr)) {
f049052b 2089 wpa_msg(wpa_s, MSG_ERROR, "Failed to get own L2 address");
6fc6879b
JM		 2090 return -1;
2091 }
2092
f049052b
BG		 2093 wpa_dbg(wpa_s, MSG_DEBUG, "Own MAC address: " MACSTR,
2094 MAC2STR(wpa_s->own_addr));
6fc6879b
JM		 2095
2096 if (wpa_s->bridge_ifname[0]) {
f049052b
BG		 2097 wpa_dbg(wpa_s, MSG_DEBUG, "Receiving packets from bridge "
2098 "interface '%s'", wpa_s->bridge_ifname);
6fc6879b
JM		 2099 wpa_s->l2_br = l2_packet_init(wpa_s->bridge_ifname,
2100 wpa_s->own_addr,
2101 ETH_P_EAPOL,
2102 wpa_supplicant_rx_eapol, wpa_s,
2103 0);
2104 if (wpa_s->l2_br == NULL) {
f049052b
BG		 2105 wpa_msg(wpa_s, MSG_ERROR, "Failed to open l2_packet "
2106 "connection for the bridge interface '%s'",
2107 wpa_s->bridge_ifname);
6fc6879b
JM		 2108 return -1;
2109 }
2110 }
2111
6fc6879b
JM		 2112 wpa_clear_keys(wpa_s, NULL);
2113
2114 /* Make sure that TKIP countermeasures are not left enabled (could
2115 * happen if wpa_supplicant is killed during countermeasures. */
2116 wpa_drv_set_countermeasures(wpa_s, 0);
2117
f049052b 2118 wpa_dbg(wpa_s, MSG_DEBUG, "RSN: flushing PMKID list in the driver");
6fc6879b
JM		 2119 wpa_drv_flush_pmkid(wpa_s);
2120
ba2a573c 2121 wpa_s->prev_scan_ssid = WILDCARD_SSID_SCAN;
74e259ec 2122 if (wpa_supplicant_enabled_networks(wpa_s->conf)) {
6a90053c
LC		 2123 if (wpa_supplicant_delayed_sched_scan(wpa_s, interface_count,
2124 100000))
a4cba8f1
LC		 2125 wpa_supplicant_req_scan(wpa_s, interface_count,
2126 100000);
74e259ec
JM		 2127 interface_count++;
2128 } else
2129 wpa_supplicant_set_state(wpa_s, WPA_INACTIVE);
6fc6879b
JM		 2130
2131 return 0;
2132}
2133
2134
2135static int wpa_supplicant_daemon(const char *pid_file)
2136{
2137 wpa_printf(MSG_DEBUG, "Daemonize..");
2138 return os_daemonize(pid_file);
2139}
2140
2141
2142static struct wpa_supplicant * wpa_supplicant_alloc(void)
2143{
2144 struct wpa_supplicant *wpa_s;
2145
2146 wpa_s = os_zalloc(sizeof(*wpa_s));
2147 if (wpa_s == NULL)
2148 return NULL;
2149 wpa_s->scan_req = 1;
67b9bd08 2150 wpa_s->scan_interval = 5;
c302f207 2151 wpa_s->new_connection = 1;
b22128ef 2152 wpa_s->parent = wpa_s;
cbdf3507 2153 wpa_s->sched_scanning = 0;
6fc6879b
JM		 2154
2155 return wpa_s;
2156}
2157
2158
2159static int wpa_supplicant_init_iface(struct wpa_supplicant *wpa_s,
2160 struct wpa_interface *iface)
2161{
362f781e
JM		 2162 const char *ifname, *driver;
2163 struct wpa_driver_capa capa;
2164
6fc6879b
JM		 2165 wpa_printf(MSG_DEBUG, "Initializing interface '%s' conf '%s' driver "
2166 "'%s' ctrl_interface '%s' bridge '%s'", iface->ifname,
2167 iface->confname ? iface->confname : "N/A",
2168 iface->driver ? iface->driver : "default",
2169 iface->ctrl_interface ? iface->ctrl_interface : "N/A",
2170 iface->bridge_ifname ? iface->bridge_ifname : "N/A");
2171
6fc6879b
JM		 2172 if (iface->confname) {
2173#ifdef CONFIG_BACKEND_FILE
2174 wpa_s->confname = os_rel2abs_path(iface->confname);
2175 if (wpa_s->confname == NULL) {
2176 wpa_printf(MSG_ERROR, "Failed to get absolute path "
2177 "for configuration file '%s'.",
2178 iface->confname);
2179 return -1;
2180 }
2181 wpa_printf(MSG_DEBUG, "Configuration file '%s' -> '%s'",
2182 iface->confname, wpa_s->confname);
2183#else /* CONFIG_BACKEND_FILE */
2184 wpa_s->confname = os_strdup(iface->confname);
2185#endif /* CONFIG_BACKEND_FILE */
2186 wpa_s->conf = wpa_config_read(wpa_s->confname);
2187 if (wpa_s->conf == NULL) {
2188 wpa_printf(MSG_ERROR, "Failed to read or parse "
2189 "configuration '%s'.", wpa_s->confname);
2190 return -1;
2191 }
2192
2193 /*
2194 * Override ctrl_interface and driver_param if set on command
2195 * line.
2196 */
2197 if (iface->ctrl_interface) {
2198 os_free(wpa_s->conf->ctrl_interface);
2199 wpa_s->conf->ctrl_interface =
2200 os_strdup(iface->ctrl_interface);
2201 }
2202
2203 if (iface->driver_param) {
2204 os_free(wpa_s->conf->driver_param);
2205 wpa_s->conf->driver_param =
2206 os_strdup(iface->driver_param);
2207 }
2208 } else
2209 wpa_s->conf = wpa_config_alloc_empty(iface->ctrl_interface,
2210 iface->driver_param);
2211
2212 if (wpa_s->conf == NULL) {
2213 wpa_printf(MSG_ERROR, "\nNo configuration found.");
2214 return -1;
2215 }
2216
2217 if (iface->ifname == NULL) {
2218 wpa_printf(MSG_ERROR, "\nInterface name is required.");
2219 return -1;
2220 }
2221 if (os_strlen(iface->ifname) >= sizeof(wpa_s->ifname)) {
2222 wpa_printf(MSG_ERROR, "\nToo long interface name '%s'.",
2223 iface->ifname);
2224 return -1;
2225 }
2226 os_strlcpy(wpa_s->ifname, iface->ifname, sizeof(wpa_s->ifname));
2227
2228 if (iface->bridge_ifname) {
2229 if (os_strlen(iface->bridge_ifname) >=
2230 sizeof(wpa_s->bridge_ifname)) {
2231 wpa_printf(MSG_ERROR, "\nToo long bridge interface "
2232 "name '%s'.", iface->bridge_ifname);
2233 return -1;
2234 }
2235 os_strlcpy(wpa_s->bridge_ifname, iface->bridge_ifname,
2236 sizeof(wpa_s->bridge_ifname));
2237 }
2238
6fc6879b
JM		 2239 /* RSNA Supplicant Key Management - INITIALIZE */
2240 eapol_sm_notify_portEnabled(wpa_s->eapol, FALSE);
2241 eapol_sm_notify_portValid(wpa_s->eapol, FALSE);
2242
2243 /* Initialize driver interface and register driver event handler before
2244 * L2 receive handler so that association events are processed before
2245 * EAPOL-Key packets if both become available for the same select()
2246 * call. */
362f781e
JM		 2247 driver = iface->driver;
2248next_driver:
2249 if (wpa_supplicant_set_driver(wpa_s, driver) < 0)
2250 return -1;
2251
6fc6879b
JM		 2252 wpa_s->drv_priv = wpa_drv_init(wpa_s, wpa_s->ifname);
2253 if (wpa_s->drv_priv == NULL) {
362f781e 2254 const char *pos;
a5b9337f 2255 pos = driver ? os_strchr(driver, ',') : NULL;
362f781e 2256 if (pos) {
f049052b
BG		 2257 wpa_dbg(wpa_s, MSG_DEBUG, "Failed to initialize "
2258 "driver interface - try next driver wrapper");
362f781e
JM		 2259 driver = pos + 1;
2260 goto next_driver;
2261 }
f049052b
BG		 2262 wpa_msg(wpa_s, MSG_ERROR, "Failed to initialize driver "
2263 "interface");
6fc6879b
JM		 2264 return -1;
2265 }
2266 if (wpa_drv_set_param(wpa_s, wpa_s->conf->driver_param) < 0) {
f049052b
BG		 2267 wpa_msg(wpa_s, MSG_ERROR, "Driver interface rejected "
2268 "driver_param '%s'", wpa_s->conf->driver_param);
6fc6879b
JM		 2269 return -1;
2270 }
2271
2272 ifname = wpa_drv_get_ifname(wpa_s);
2273 if (ifname && os_strcmp(ifname, wpa_s->ifname) != 0) {
f049052b
BG		 2274 wpa_dbg(wpa_s, MSG_DEBUG, "Driver interface replaced "
2275 "interface name with '%s'", ifname);
6fc6879b
JM		 2276 os_strlcpy(wpa_s->ifname, ifname, sizeof(wpa_s->ifname));
2277 }
2278
2279 if (wpa_supplicant_init_wpa(wpa_s) < 0)
2280 return -1;
2281
2282 wpa_sm_set_ifname(wpa_s->wpa, wpa_s->ifname,
2283 wpa_s->bridge_ifname[0] ? wpa_s->bridge_ifname :
2284 NULL);
2285 wpa_sm_set_fast_reauth(wpa_s->wpa, wpa_s->conf->fast_reauth);
2286
2287 if (wpa_s->conf->dot11RSNAConfigPMKLifetime &&
2288 wpa_sm_set_param(wpa_s->wpa, RSNA_PMK_LIFETIME,
2289 wpa_s->conf->dot11RSNAConfigPMKLifetime)) {
f049052b
BG		 2290 wpa_msg(wpa_s, MSG_ERROR, "Invalid WPA parameter value for "
2291 "dot11RSNAConfigPMKLifetime");
6fc6879b
JM		 2292 return -1;
2293 }
2294
2295 if (wpa_s->conf->dot11RSNAConfigPMKReauthThreshold &&
2296 wpa_sm_set_param(wpa_s->wpa, RSNA_PMK_REAUTH_THRESHOLD,
2297 wpa_s->conf->dot11RSNAConfigPMKReauthThreshold)) {
f049052b 2298 wpa_msg(wpa_s, MSG_ERROR, "Invalid WPA parameter value for "
6fc6879b
JM		 2299 "dot11RSNAConfigPMKReauthThreshold");
2300 return -1;
2301 }
2302
2303 if (wpa_s->conf->dot11RSNAConfigSATimeout &&
2304 wpa_sm_set_param(wpa_s->wpa, RSNA_SA_TIMEOUT,
2305 wpa_s->conf->dot11RSNAConfigSATimeout)) {
f049052b
BG		 2306 wpa_msg(wpa_s, MSG_ERROR, "Invalid WPA parameter value for "
2307 "dot11RSNAConfigSATimeout");
6fc6879b
JM		 2308 return -1;
2309 }
2310
6bf731e8
CL		 2311 wpa_s->hw.modes = wpa_drv_get_hw_feature_data(wpa_s,
2312 &wpa_s->hw.num_modes,
2313 &wpa_s->hw.flags);
2314
814782b9 2315 if (wpa_drv_get_capa(wpa_s, &capa) == 0) {
c58ab8f2 2316 wpa_s->drv_capa_known = 1;
814782b9 2317 wpa_s->drv_flags = capa.flags;
814782b9 2318 wpa_s->max_scan_ssids = capa.max_scan_ssids;
cbdf3507
LC		 2319 wpa_s->max_sched_scan_ssids = capa.max_sched_scan_ssids;
2320 wpa_s->sched_scan_supported = capa.sched_scan_supported;
b59e6f26 2321 wpa_s->max_match_sets = capa.max_match_sets;
814782b9 2322 wpa_s->max_remain_on_chan = capa.max_remain_on_chan;
c4ea4c5c 2323 wpa_s->max_stations = capa.max_stations;
814782b9
JM		 2324 }
2325 if (wpa_s->max_remain_on_chan == 0)
2326 wpa_s->max_remain_on_chan = 1000;
2327
6fc6879b
JM		 2328 if (wpa_supplicant_driver_init(wpa_s) < 0)
2329 return -1;
2330
281ff0aa
GP		 2331#ifdef CONFIG_TDLS
2332 if (wpa_tdls_init(wpa_s->wpa))
2333 return -1;
2334#endif /* CONFIG_TDLS */
2335
315ce40a
JM		 2336 if (wpa_s->conf->country[0] && wpa_s->conf->country[1] &&
2337 wpa_drv_set_country(wpa_s, wpa_s->conf->country)) {
f049052b 2338 wpa_dbg(wpa_s, MSG_DEBUG, "Failed to set country");
6d158490
LR		 2339 return -1;
2340 }
2341
6fc6879b
JM		 2342 wpa_sm_set_own_addr(wpa_s->wpa, wpa_s->own_addr);
2343
116654ce
JM		 2344 if (wpas_wps_init(wpa_s))
2345 return -1;
2346
6fc6879b
JM		 2347 if (wpa_supplicant_init_eapol(wpa_s) < 0)
2348 return -1;
2349 wpa_sm_set_eapol(wpa_s->wpa, wpa_s->eapol);
2350
2351 wpa_s->ctrl_iface = wpa_supplicant_ctrl_iface_init(wpa_s);
2352 if (wpa_s->ctrl_iface == NULL) {
2353 wpa_printf(MSG_ERROR,
2354 "Failed to initialize control interface '%s'.\n"
2355 "You may have another wpa_supplicant process "
2356 "already running or the file was\n"
2357 "left by an unclean termination of wpa_supplicant "
2358 "in which case you will need\n"
2359 "to manually remove this file before starting "
2360 "wpa_supplicant again.\n",
2361 wpa_s->conf->ctrl_interface);
2362 return -1;
2363 }
2364
04ea7b79
JM		 2365 wpa_s->gas = gas_query_init(wpa_s);
2366 if (wpa_s->gas == NULL) {
2367 wpa_printf(MSG_ERROR, "Failed to initialize GAS query");
2368 return -1;
2369 }
2370
b22128ef
JM		 2371#ifdef CONFIG_P2P
2372 if (wpas_p2p_init(wpa_s->global, wpa_s) < 0) {
f049052b 2373 wpa_msg(wpa_s, MSG_ERROR, "Failed to init P2P");
b22128ef
JM		 2374 return -1;
2375 }
2376#endif /* CONFIG_P2P */
2377
83922c2d
JM		 2378 if (wpa_bss_init(wpa_s) < 0)
2379 return -1;
83922c2d 2380
6fc6879b
JM		 2381 return 0;
2382}
2383
2384
2ee055b3
JM		 2385static void wpa_supplicant_deinit_iface(struct wpa_supplicant *wpa_s,
2386 int notify)
6fc6879b
JM		 2387{
2388 if (wpa_s->drv_priv) {
2389 wpa_supplicant_deauthenticate(wpa_s,
2390 WLAN_REASON_DEAUTH_LEAVING);
2391
6fc6879b
JM		 2392 wpa_drv_set_countermeasures(wpa_s, 0);
2393 wpa_clear_keys(wpa_s, NULL);
2394 }
2395
8e56d189
JM		 2396 wpa_supplicant_cleanup(wpa_s);
2397
2ee055b3
JM		 2398 if (notify)
2399 wpas_notify_iface_removed(wpa_s);
6fc6879b 2400
6fc6879b
JM		 2401 if (wpa_s->drv_priv)
2402 wpa_drv_deinit(wpa_s);
2403}
2404
2405
2406/**
2407 * wpa_supplicant_add_iface - Add a new network interface
2408 * @global: Pointer to global data from wpa_supplicant_init()
2409 * @iface: Interface configuration options
2410 * Returns: Pointer to the created interface or %NULL on failure
2411 *
2412 * This function is used to add new network interfaces for %wpa_supplicant.
2413 * This can be called before wpa_supplicant_run() to add interfaces before the
2414 * main event loop has been started. In addition, new interfaces can be added
2415 * dynamically while %wpa_supplicant is already running. This could happen,
2416 * e.g., when a hotplug network adapter is inserted.
2417 */
2418struct wpa_supplicant * wpa_supplicant_add_iface(struct wpa_global *global,
2419 struct wpa_interface *iface)
2420{
2421 struct wpa_supplicant *wpa_s;
d27df100 2422 struct wpa_interface t_iface;
8e56d189 2423 struct wpa_ssid *ssid;
6fc6879b
JM		 2424
2425 if (global == NULL || iface == NULL)
2426 return NULL;
2427
2428 wpa_s = wpa_supplicant_alloc();
2429 if (wpa_s == NULL)
2430 return NULL;
2431
d8222ae3
JM		 2432 wpa_s->global = global;
2433
d27df100
JM		 2434 t_iface = *iface;
2435 if (global->params.override_driver) {
2436 wpa_printf(MSG_DEBUG, "Override interface parameter: driver "
2437 "('%s' -> '%s')",
2438 iface->driver, global->params.override_driver);
2439 t_iface.driver = global->params.override_driver;
2440 }
2441 if (global->params.override_ctrl_interface) {
2442 wpa_printf(MSG_DEBUG, "Override interface parameter: "
2443 "ctrl_interface ('%s' -> '%s')",
2444 iface->ctrl_interface,
2445 global->params.override_ctrl_interface);
2446 t_iface.ctrl_interface =
2447 global->params.override_ctrl_interface;
2448 }
2449 if (wpa_supplicant_init_iface(wpa_s, &t_iface)) {
6fc6879b
JM		 2450 wpa_printf(MSG_DEBUG, "Failed to add interface %s",
2451 iface->ifname);
2ee055b3 2452 wpa_supplicant_deinit_iface(wpa_s, 0);
6fc6879b
JM		 2453 os_free(wpa_s);
2454 return NULL;
2455 }
2456
dc461de4
WS		 2457 /* Notify the control interfaces about new iface */
2458 if (wpas_notify_iface_added(wpa_s)) {
2ee055b3 2459 wpa_supplicant_deinit_iface(wpa_s, 1);
6fc6879b
JM		 2460 os_free(wpa_s);
2461 return NULL;
2462 }
1bd3f426 2463
8e56d189
JM		 2464 for (ssid = wpa_s->conf->ssid; ssid; ssid = ssid->next)
2465 wpas_notify_network_added(wpa_s, ssid);
2466
6fc6879b
JM		 2467 wpa_s->next = global->ifaces;
2468 global->ifaces = wpa_s;
2469
f049052b 2470 wpa_dbg(wpa_s, MSG_DEBUG, "Added interface %s", wpa_s->ifname);
6fc6879b
JM		 2471
2472 return wpa_s;
2473}
2474
2475
2476/**
2477 * wpa_supplicant_remove_iface - Remove a network interface
2478 * @global: Pointer to global data from wpa_supplicant_init()
2479 * @wpa_s: Pointer to the network interface to be removed
2480 * Returns: 0 if interface was removed, -1 if interface was not found
2481 *
2482 * This function can be used to dynamically remove network interfaces from
2483 * %wpa_supplicant, e.g., when a hotplug network adapter is ejected. In
2484 * addition, this function is used to remove all remaining interfaces when
2485 * %wpa_supplicant is terminated.
2486 */
2487int wpa_supplicant_remove_iface(struct wpa_global *global,
2488 struct wpa_supplicant *wpa_s)
2489{
2490 struct wpa_supplicant *prev;
2491
2492 /* Remove interface from the global list of interfaces */
2493 prev = global->ifaces;
2494 if (prev == wpa_s) {
2495 global->ifaces = wpa_s->next;
2496 } else {
2497 while (prev && prev->next != wpa_s)
2498 prev = prev->next;
2499 if (prev == NULL)
2500 return -1;
2501 prev->next = wpa_s->next;
2502 }
2503
f049052b 2504 wpa_dbg(wpa_s, MSG_DEBUG, "Removing interface %s", wpa_s->ifname);
6fc6879b 2505
b22128ef
JM		 2506 if (global->p2p_group_formation == wpa_s)
2507 global->p2p_group_formation = NULL;
2ee055b3 2508 wpa_supplicant_deinit_iface(wpa_s, 1);
6fc6879b
JM		 2509 os_free(wpa_s);
2510
2511 return 0;
2512}
2513
2514
cf83fb0b
PS		 2515/**
2516 * wpa_supplicant_get_eap_mode - Get the current EAP mode
2517 * @wpa_s: Pointer to the network interface
2518 * Returns: Pointer to the eap mode or the string "UNKNOWN" if not found
2519 */
2520const char * wpa_supplicant_get_eap_mode(struct wpa_supplicant *wpa_s)
2521{
2522 const char *eapol_method;
2523
2524 if (wpa_key_mgmt_wpa_ieee8021x(wpa_s->key_mgmt) == 0 &&
2525 wpa_s->key_mgmt != WPA_KEY_MGMT_IEEE8021X_NO_WPA) {
2526 return "NO-EAP";
2527 }
2528
2529 eapol_method = eapol_sm_get_method_name(wpa_s->eapol);
2530 if (eapol_method == NULL)
2531 return "UNKNOWN-EAP";
2532
2533 return eapol_method;
2534}
2535
2536
6fc6879b
JM		 2537/**
2538 * wpa_supplicant_get_iface - Get a new network interface
2539 * @global: Pointer to global data from wpa_supplicant_init()
2540 * @ifname: Interface name
2541 * Returns: Pointer to the interface or %NULL if not found
2542 */
2543struct wpa_supplicant * wpa_supplicant_get_iface(struct wpa_global *global,
2544 const char *ifname)
2545{
2546 struct wpa_supplicant *wpa_s;
2547
2548 for (wpa_s = global->ifaces; wpa_s; wpa_s = wpa_s->next) {
2549 if (os_strcmp(wpa_s->ifname, ifname) == 0)
2550 return wpa_s;
2551 }
2552 return NULL;
2553}
2554
2555
50b16da1 2556#ifndef CONFIG_NO_WPA_MSG
4f1495ae
BG		 2557static const char * wpa_supplicant_msg_ifname_cb(void *ctx)
2558{
2559 struct wpa_supplicant *wpa_s = ctx;
2560 if (wpa_s == NULL)
2561 return NULL;
2562 return wpa_s->ifname;
2563}
50b16da1 2564#endif /* CONFIG_NO_WPA_MSG */
4f1495ae
BG		 2565
2566
6fc6879b
JM		 2567/**
2568 * wpa_supplicant_init - Initialize %wpa_supplicant
2569 * @params: Parameters for %wpa_supplicant
2570 * Returns: Pointer to global %wpa_supplicant data, or %NULL on failure
2571 *
2572 * This function is used to initialize %wpa_supplicant. After successful
2573 * initialization, the returned data pointer can be used to add and remove
2574 * network interfaces, and eventually, to deinitialize %wpa_supplicant.
2575 */
2576struct wpa_global * wpa_supplicant_init(struct wpa_params *params)
2577{
2578 struct wpa_global *global;
ac305589 2579 int ret, i;
6fc6879b
JM		 2580
2581 if (params == NULL)
2582 return NULL;
2583
39e7d718
JM		 2584#ifdef CONFIG_DRIVER_NDIS
2585 {
2586 void driver_ndis_init_ops(void);
2587 driver_ndis_init_ops();
2588 }
2589#endif /* CONFIG_DRIVER_NDIS */
2590
50b16da1 2591#ifndef CONFIG_NO_WPA_MSG
4f1495ae 2592 wpa_msg_register_ifname_cb(wpa_supplicant_msg_ifname_cb);
50b16da1 2593#endif /* CONFIG_NO_WPA_MSG */
4f1495ae 2594
6fc6879b 2595 wpa_debug_open_file(params->wpa_debug_file_path);
daa70d49
SL		 2596 if (params->wpa_debug_syslog)
2597 wpa_debug_open_syslog();
6fc6879b 2598
12760815 2599 ret = eap_register_methods();
6fc6879b
JM		 2600 if (ret) {
2601 wpa_printf(MSG_ERROR, "Failed to register EAP methods");
2602 if (ret == -2)
2603 wpa_printf(MSG_ERROR, "Two or more EAP methods used "
2604 "the same EAP type.");
2605 return NULL;
2606 }
2607
2608 global = os_zalloc(sizeof(*global));
2609 if (global == NULL)
2610 return NULL;
b22128ef
JM		 2611 dl_list_init(&global->p2p_srv_bonjour);
2612 dl_list_init(&global->p2p_srv_upnp);
6fc6879b
JM		 2613 global->params.daemonize = params->daemonize;
2614 global->params.wait_for_monitor = params->wait_for_monitor;
2615 global->params.dbus_ctrl_interface = params->dbus_ctrl_interface;
2616 if (params->pid_file)
2617 global->params.pid_file = os_strdup(params->pid_file);
2618 if (params->ctrl_interface)
2619 global->params.ctrl_interface =
2620 os_strdup(params->ctrl_interface);
d27df100
JM		 2621 if (params->override_driver)
2622 global->params.override_driver =
2623 os_strdup(params->override_driver);
2624 if (params->override_ctrl_interface)
2625 global->params.override_ctrl_interface =
2626 os_strdup(params->override_ctrl_interface);
6fc6879b
JM		 2627 wpa_debug_level = global->params.wpa_debug_level =
2628 params->wpa_debug_level;
2629 wpa_debug_show_keys = global->params.wpa_debug_show_keys =
2630 params->wpa_debug_show_keys;
2631 wpa_debug_timestamp = global->params.wpa_debug_timestamp =
2632 params->wpa_debug_timestamp;
2633
f19858f5
JM		 2634 wpa_printf(MSG_DEBUG, "wpa_supplicant v" VERSION_STR);
2635
0456ea16 2636 if (eloop_init()) {
6fc6879b
JM		 2637 wpa_printf(MSG_ERROR, "Failed to initialize event loop");
2638 wpa_supplicant_deinit(global);
2639 return NULL;
2640 }
2641
38e24575 2642 random_init(params->entropy_file);
d47fa330 2643
6fc6879b
JM		 2644 global->ctrl_iface = wpa_supplicant_global_ctrl_iface_init(global);
2645 if (global->ctrl_iface == NULL) {
2646 wpa_supplicant_deinit(global);
2647 return NULL;
2648 }
2649
dc461de4
WS		 2650 if (wpas_notify_supplicant_initialized(global)) {
2651 wpa_supplicant_deinit(global);
2652 return NULL;
6fc6879b
JM		 2653 }
2654
c5121837 2655 for (i = 0; wpa_drivers[i]; i++)
ac305589
JM		 2656 global->drv_count++;
2657 if (global->drv_count == 0) {
2658 wpa_printf(MSG_ERROR, "No drivers enabled");
2659 wpa_supplicant_deinit(global);
2660 return NULL;
2661 }
2662 global->drv_priv = os_zalloc(global->drv_count * sizeof(void *));
2663 if (global->drv_priv == NULL) {
2664 wpa_supplicant_deinit(global);
2665 return NULL;
2666 }
ac305589 2667
6fc6879b
JM		 2668 return global;
2669}
2670
2671
2672/**
2673 * wpa_supplicant_run - Run the %wpa_supplicant main event loop
2674 * @global: Pointer to global data from wpa_supplicant_init()
2675 * Returns: 0 after successful event loop run, -1 on failure
2676 *
2677 * This function starts the main event loop and continues running as long as
2678 * there are any remaining events. In most cases, this function is running as
2679 * long as the %wpa_supplicant process in still in use.
2680 */
2681int wpa_supplicant_run(struct wpa_global *global)
2682{
2683 struct wpa_supplicant *wpa_s;
2684
2685 if (global->params.daemonize &&
2686 wpa_supplicant_daemon(global->params.pid_file))
2687 return -1;
2688
2689 if (global->params.wait_for_monitor) {
2690 for (wpa_s = global->ifaces; wpa_s; wpa_s = wpa_s->next)
2691 if (wpa_s->ctrl_iface)
2692 wpa_supplicant_ctrl_iface_wait(
2693 wpa_s->ctrl_iface);
2694 }
2695
0456ea16
JM		 2696 eloop_register_signal_terminate(wpa_supplicant_terminate, global);
2697 eloop_register_signal_reconfig(wpa_supplicant_reconfig, global);
6fc6879b
JM		 2698
2699 eloop_run();
2700
2701 return 0;
2702}
2703
2704
2705/**
2706 * wpa_supplicant_deinit - Deinitialize %wpa_supplicant
2707 * @global: Pointer to global data from wpa_supplicant_init()
2708 *
2709 * This function is called to deinitialize %wpa_supplicant and to free all
2710 * allocated resources. Remaining network interfaces will also be removed.
2711 */
2712void wpa_supplicant_deinit(struct wpa_global *global)
2713{
ac305589
JM		 2714 int i;
2715
6fc6879b
JM		 2716 if (global == NULL)
2717 return;
2718
b22128ef
JM		 2719#ifdef CONFIG_P2P
2720 wpas_p2p_deinit_global(global);
2721#endif /* CONFIG_P2P */
2722
6fc6879b
JM		 2723 while (global->ifaces)
2724 wpa_supplicant_remove_iface(global, global->ifaces);
2725
2726 if (global->ctrl_iface)
2727 wpa_supplicant_global_ctrl_iface_deinit(global->ctrl_iface);
dc461de4
WS		 2728
2729 wpas_notify_supplicant_deinitialized(global);
6fc6879b
JM		 2730
2731 eap_peer_unregister_methods();
3ec97afe
JM		 2732#ifdef CONFIG_AP
2733 eap_server_unregister_methods();
2734#endif /* CONFIG_AP */
6fc6879b 2735
c5121837 2736 for (i = 0; wpa_drivers[i] && global->drv_priv; i++) {
ac305589
JM		 2737 if (!global->drv_priv[i])
2738 continue;
c5121837 2739 wpa_drivers[i]->global_deinit(global->drv_priv[i]);
ac305589
JM		 2740 }
2741 os_free(global->drv_priv);
2742
d47fa330
JM		 2743 random_deinit();
2744
6fc6879b
JM		 2745 eloop_destroy();
2746
2747 if (global->params.pid_file) {
2748 os_daemonize_terminate(global->params.pid_file);
2749 os_free(global->params.pid_file);
2750 }
2751 os_free(global->params.ctrl_interface);
d27df100
JM		 2752 os_free(global->params.override_driver);
2753 os_free(global->params.override_ctrl_interface);
6fc6879b
JM		 2754
2755 os_free(global);
daa70d49 2756 wpa_debug_close_syslog();
6fc6879b
JM		 2757 wpa_debug_close_file();
2758}
611aea7d
JM		 2759
2760
2761void wpa_supplicant_update_config(struct wpa_supplicant *wpa_s)
2762{
849b5dc7
JM		 2763 if ((wpa_s->conf->changed_parameters & CFG_CHANGED_COUNTRY) &&
2764 wpa_s->conf->country[0] && wpa_s->conf->country[1]) {
2765 char country[3];
2766 country[0] = wpa_s->conf->country[0];
2767 country[1] = wpa_s->conf->country[1];
2768 country[2] = '\0';
2769 if (wpa_drv_set_country(wpa_s, country) < 0) {
2770 wpa_printf(MSG_ERROR, "Failed to set country code "
2771 "'%s'", country);
2772 }
2773 }
2774
611aea7d
JM		 2775#ifdef CONFIG_WPS
2776 wpas_wps_update_config(wpa_s);
2777#endif /* CONFIG_WPS */
2778
b22128ef
JM		 2779#ifdef CONFIG_P2P
2780 wpas_p2p_update_config(wpa_s);
2781#endif /* CONFIG_P2P */
2782
611aea7d
JM		 2783 wpa_s->conf->changed_parameters = 0;
2784}
2f9c6aa6
JM		 2785
2786
0fb337c1
JM		 2787static void add_freq(int *freqs, int *num_freqs, int freq)
2788{
2789 int i;
2790
2791 for (i = 0; i < *num_freqs; i++) {
2792 if (freqs[i] == freq)
2793 return;
2794 }
2795
2796 freqs[*num_freqs] = freq;
2797 (*num_freqs)++;
2798}
2799
2800
2801static int * get_bss_freqs_in_ess(struct wpa_supplicant *wpa_s)
2802{
2803 struct wpa_bss *bss, *cbss;
2804 const int max_freqs = 10;
2805 int *freqs;
2806 int num_freqs = 0;
2807
2808 freqs = os_zalloc(sizeof(int) * (max_freqs + 1));
2809 if (freqs == NULL)
2810 return NULL;
2811
2812 cbss = wpa_s->current_bss;
2813
2814 dl_list_for_each(bss, &wpa_s->bss, struct wpa_bss, list) {
2815 if (bss == cbss)
2816 continue;
2817 if (bss->ssid_len == cbss->ssid_len &&
2818 os_memcmp(bss->ssid, cbss->ssid, bss->ssid_len) == 0 &&
2819 wpa_blacklist_get(wpa_s, bss->bssid) == NULL) {
2820 add_freq(freqs, &num_freqs, bss->freq);
2821 if (num_freqs == max_freqs)
2822 break;
2823 }
2824 }
2825
2826 if (num_freqs == 0) {
2827 os_free(freqs);
2828 freqs = NULL;
2829 }
2830
2831 return freqs;
2832}
2833
2834
2835void wpas_connection_failed(struct wpa_supplicant *wpa_s, const u8 *bssid)
2836{
2837 int timeout;
2838 int count;
2839 int *freqs = NULL;
2840
2841 /*
2842 * Add the failed BSSID into the blacklist and speed up next scan
2843 * attempt if there could be other APs that could accept association.
2844 * The current blacklist count indicates how many times we have tried
2845 * connecting to this AP and multiple attempts mean that other APs are
2846 * either not available or has already been tried, so that we can start
2847 * increasing the delay here to avoid constant scanning.
2848 */
2849 count = wpa_blacklist_add(wpa_s, bssid);
2850 if (count == 1 && wpa_s->current_bss) {
2851 /*
2852 * This BSS was not in the blacklist before. If there is
2853 * another BSS available for the same ESS, we should try that
2854 * next. Otherwise, we may as well try this one once more
2855 * before allowing other, likely worse, ESSes to be considered.
2856 */
2857 freqs = get_bss_freqs_in_ess(wpa_s);
2858 if (freqs) {
f049052b
BG		 2859 wpa_dbg(wpa_s, MSG_DEBUG, "Another BSS in this ESS "
2860 "has been seen; try it next");
0fb337c1
JM		 2861 wpa_blacklist_add(wpa_s, bssid);
2862 /*
2863 * On the next scan, go through only the known channels
2864 * used in this ESS based on previous scans to speed up
2865 * common load balancing use case.
2866 */
2867 os_free(wpa_s->next_scan_freqs);
2868 wpa_s->next_scan_freqs = freqs;
2869 }
2870 }
2871
2872 switch (count) {
2873 case 1:
2874 timeout = 100;
2875 break;
2876 case 2:
2877 timeout = 500;
2878 break;
2879 case 3:
2880 timeout = 1000;
2881 break;
2882 default:
2883 timeout = 5000;
2884 }
2885
2886 /*
2887 * TODO: if more than one possible AP is available in scan results,
2888 * could try the other ones before requesting a new scan.
2889 */
2890 wpa_supplicant_req_scan(wpa_s, timeout / 1000,
2891 1000 * (timeout % 1000));
2892}
22628eca
JM		 2893
2894
2895int wpas_driver_bss_selection(struct wpa_supplicant *wpa_s)
2896{
2897 return wpa_s->conf->ap_scan == 2 ||
2898 (wpa_s->drv_flags & WPA_DRIVER_FLAGS_BSS_SELECTION);
2899}
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