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tests: P2P passphrase length configuration
[thirdparty/hostap.git] / wpa_supplicant / sme.c
CommitLineData
c2a04078
JM		 1/*
2 * wpa_supplicant - SME
6ac4b15e 3 * Copyright (c) 2009-2014, Jouni Malinen <j@w1.fi>
c2a04078 4 *
0f3d578e
JM		 5 * This software may be distributed under the terms of the BSD license.
6 * See README for more details.
c2a04078
JM		 7 */
8
9#include "includes.h"
10
11#include "common.h"
7d878ca7 12#include "utils/eloop.h"
90973fb2 13#include "common/ieee802_11_defs.h"
d9a27b04 14#include "common/ieee802_11_common.h"
c2a04078 15#include "eapol_supp/eapol_supp_sm.h"
90973fb2 16#include "common/wpa_common.h"
98efcc41 17#include "common/sae.h"
3acb5005
JM		 18#include "rsn_supp/wpa.h"
19#include "rsn_supp/pmksa_cache.h"
c2a04078
JM		 20#include "config.h"
21#include "wpa_supplicant_i.h"
2d5b792d 22#include "driver_i.h"
c2a04078
JM		 23#include "wpas_glue.h"
24#include "wps_supplicant.h"
5f3a6aa0 25#include "p2p_supplicant.h"
8bac466b 26#include "notify.h"
6fa81a3b 27#include "bss.h"
9ba9fa07 28#include "scan.h"
c2a04078 29#include "sme.h"
cb418324 30#include "hs20_supplicant.h"
c2a04078 31
e29853bb
BG		 32#define SME_AUTH_TIMEOUT 5
33#define SME_ASSOC_TIMEOUT 5
34
35static void sme_auth_timer(void *eloop_ctx, void *timeout_ctx);
36static void sme_assoc_timer(void *eloop_ctx, void *timeout_ctx);
c3701c66 37static void sme_obss_scan_timeout(void *eloop_ctx, void *timeout_ctx);
e29853bb
BG		 38#ifdef CONFIG_IEEE80211W
39static void sme_stop_sa_query(struct wpa_supplicant *wpa_s);
40#endif /* CONFIG_IEEE80211W */
41
42
c10347f2
JM		 43#ifdef CONFIG_SAE
44
625f202a
JM		 45static int index_within_array(const int *array, int idx)
46{
47 int i;
48 for (i = 0; i < idx; i++) {
18ca7332 49 if (array[i] <= 0)
625f202a
JM		 50 return 0;
51 }
52 return 1;
53}
54
55
56static int sme_set_sae_group(struct wpa_supplicant *wpa_s)
57{
58 int *groups = wpa_s->conf->sae_groups;
18ca7332 59 int default_groups[] = { 19, 20, 21, 25, 26, 0 };
625f202a 60
18ca7332 61 if (!groups || groups[0] <= 0)
625f202a
JM		 62 groups = default_groups;
63
64 /* Configuration may have changed, so validate current index */
65 if (!index_within_array(groups, wpa_s->sme.sae_group_index))
66 return -1;
67
68 for (;;) {
69 int group = groups[wpa_s->sme.sae_group_index];
70 if (group < 0)
71 break;
72 if (sae_set_group(&wpa_s->sme.sae, group) == 0) {
73 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Selected SAE group %d",
74 wpa_s->sme.sae.group);
75 return 0;
76 }
77 wpa_s->sme.sae_group_index++;
78 }
79
80 return -1;
81}
82
83
8e31e955
JM		 84static struct wpabuf * sme_auth_build_sae_commit(struct wpa_supplicant *wpa_s,
85 struct wpa_ssid *ssid,
86 const u8 *bssid)
c10347f2
JM		 87{
88 struct wpabuf *buf;
d136c376 89 size_t len;
c10347f2 90
8e31e955
JM		 91 if (ssid->passphrase == NULL) {
92 wpa_printf(MSG_DEBUG, "SAE: No password available");
93 return NULL;
94 }
95
625f202a
JM		 96 if (sme_set_sae_group(wpa_s) < 0) {
97 wpa_printf(MSG_DEBUG, "SAE: Failed to select group");
a46d72d7 98 return NULL;
625f202a 99 }
a46d72d7 100
8e31e955
JM		 101 if (sae_prepare_commit(wpa_s->own_addr, bssid,
102 (u8 *) ssid->passphrase,
103 os_strlen(ssid->passphrase),
104 &wpa_s->sme.sae) < 0) {
105 wpa_printf(MSG_DEBUG, "SAE: Could not pick PWE");
106 return NULL;
107 }
108
d136c376
JM		 109 len = wpa_s->sme.sae_token ? wpabuf_len(wpa_s->sme.sae_token) : 0;
110 buf = wpabuf_alloc(4 + SAE_COMMIT_MAX_LEN + len);
c10347f2
JM		 111 if (buf == NULL)
112 return NULL;
113
114 wpabuf_put_le16(buf, 1); /* Transaction seq# */
115 wpabuf_put_le16(buf, WLAN_STATUS_SUCCESS);
d136c376 116 sae_write_commit(&wpa_s->sme.sae, buf, wpa_s->sme.sae_token);
c10347f2
JM		 117
118 return buf;
119}
120
121
122static struct wpabuf * sme_auth_build_sae_confirm(struct wpa_supplicant *wpa_s)
123{
124 struct wpabuf *buf;
125
fb8fcc29 126 buf = wpabuf_alloc(4 + SAE_CONFIRM_MAX_LEN);
c10347f2
JM		 127 if (buf == NULL)
128 return NULL;
129
130 wpabuf_put_le16(buf, 2); /* Transaction seq# */
131 wpabuf_put_le16(buf, WLAN_STATUS_SUCCESS);
fb8fcc29 132 sae_write_confirm(&wpa_s->sme.sae, buf);
c10347f2
JM		 133
134 return buf;
135}
136
137#endif /* CONFIG_SAE */
138
139
215ae884
JM		 140static void sme_send_authentication(struct wpa_supplicant *wpa_s,
141 struct wpa_bss *bss, struct wpa_ssid *ssid,
142 int start)
c2a04078
JM		 143{
144 struct wpa_driver_auth_params params;
8bac466b 145 struct wpa_ssid *old_ssid;
fdbe50ed 146#ifdef CONFIG_IEEE80211R
c2a04078 147 const u8 *ie;
fdbe50ed 148#endif /* CONFIG_IEEE80211R */
c2a04078
JM		 149#ifdef CONFIG_IEEE80211R
150 const u8 *md = NULL;
151#endif /* CONFIG_IEEE80211R */
8bac466b 152 int i, bssid_changed;
c10347f2 153 struct wpabuf *resp = NULL;
0bbaa9b9 154 u8 ext_capab[18];
03e47c9c 155 int ext_capab_len;
c2a04078
JM		 156
157 if (bss == NULL) {
f049052b
BG		 158 wpa_msg(wpa_s, MSG_ERROR, "SME: No scan result available for "
159 "the network");
6ac4b15e 160 wpas_connect_work_done(wpa_s);
c2a04078
JM		 161 return;
162 }
163
8f770587
JM		 164 wpa_s->current_bss = bss;
165
c2a04078
JM		 166 os_memset(&params, 0, sizeof(params));
167 wpa_s->reassociate = 0;
168
169 params.freq = bss->freq;
170 params.bssid = bss->bssid;
6fa81a3b
JM		 171 params.ssid = bss->ssid;
172 params.ssid_len = bss->ssid_len;
2f4f73b1 173 params.p2p = ssid->p2p_group;
c2a04078 174
62fa124c
JM		 175 if (wpa_s->sme.ssid_len != params.ssid_len ||
176 os_memcmp(wpa_s->sme.ssid, params.ssid, params.ssid_len) != 0)
177 wpa_s->sme.prev_bssid_set = 0;
178
c2a04078
JM		 179 wpa_s->sme.freq = params.freq;
180 os_memcpy(wpa_s->sme.ssid, params.ssid, params.ssid_len);
181 wpa_s->sme.ssid_len = params.ssid_len;
182
abd9fafa 183 params.auth_alg = WPA_AUTH_ALG_OPEN;
c2a04078
JM		 184#ifdef IEEE8021X_EAPOL
185 if (ssid->key_mgmt & WPA_KEY_MGMT_IEEE8021X_NO_WPA) {
186 if (ssid->leap) {
187 if (ssid->non_leap == 0)
abd9fafa 188 params.auth_alg = WPA_AUTH_ALG_LEAP;
c2a04078 189 else
abd9fafa 190 params.auth_alg |= WPA_AUTH_ALG_LEAP;
c2a04078
JM		 191 }
192 }
193#endif /* IEEE8021X_EAPOL */
f049052b
BG		 194 wpa_dbg(wpa_s, MSG_DEBUG, "Automatic auth_alg selection: 0x%x",
195 params.auth_alg);
c2a04078 196 if (ssid->auth_alg) {
abd9fafa 197 params.auth_alg = ssid->auth_alg;
f049052b
BG		 198 wpa_dbg(wpa_s, MSG_DEBUG, "Overriding auth_alg selection: "
199 "0x%x", params.auth_alg);
c2a04078 200 }
c10347f2
JM		 201#ifdef CONFIG_SAE
202 if (wpa_key_mgmt_sae(ssid->key_mgmt)) {
203 const u8 *rsn;
204 struct wpa_ie_data ied;
205
206 rsn = wpa_bss_get_ie(bss, WLAN_EID_RSN);
207 if (rsn &&
208 wpa_parse_wpa_ie(rsn, 2 + rsn[1], &ied) == 0) {
209 if (wpa_key_mgmt_sae(ied.key_mgmt)) {
210 wpa_dbg(wpa_s, MSG_DEBUG, "Using SAE auth_alg");
211 params.auth_alg = WPA_AUTH_ALG_SAE;
212 }
213 }
214 }
215#endif /* CONFIG_SAE */
c2a04078 216
a0b2f99b
JM		 217 for (i = 0; i < NUM_WEP_KEYS; i++) {
218 if (ssid->wep_key_len[i])
219 params.wep_key[i] = ssid->wep_key[i];
220 params.wep_key_len[i] = ssid->wep_key_len[i];
221 }
222 params.wep_tx_keyidx = ssid->wep_tx_keyidx;
223
8bac466b 224 bssid_changed = !is_zero_ether_addr(wpa_s->bssid);
c2a04078
JM		 225 os_memset(wpa_s->bssid, 0, ETH_ALEN);
226 os_memcpy(wpa_s->pending_bssid, bss->bssid, ETH_ALEN);
8bac466b
JM		 227 if (bssid_changed)
228 wpas_notify_bssid_changed(wpa_s);
c2a04078 229
f337f0e9
JM		 230 if ((wpa_bss_get_vendor_ie(bss, WPA_IE_VENDOR_TYPE) ||
231 wpa_bss_get_ie(bss, WLAN_EID_RSN)) &&
0bf927a0 232 wpa_key_mgmt_wpa(ssid->key_mgmt)) {
c2a04078 233 int try_opportunistic;
6e202021
JM		 234 try_opportunistic = (ssid->proactive_key_caching < 0 ?
235 wpa_s->conf->okc :
236 ssid->proactive_key_caching) &&
c2a04078
JM		 237 (ssid->proto & WPA_PROTO_RSN);
238 if (pmksa_cache_set_current(wpa_s->wpa, NULL, bss->bssid,
239 wpa_s->current_ssid,
240 try_opportunistic) == 0)
241 eapol_sm_notify_pmkid_attempt(wpa_s->eapol, 1);
242 wpa_s->sme.assoc_req_ie_len = sizeof(wpa_s->sme.assoc_req_ie);
243 if (wpa_supplicant_set_suites(wpa_s, bss, ssid,
244 wpa_s->sme.assoc_req_ie,
245 &wpa_s->sme.assoc_req_ie_len)) {
f049052b
BG		 246 wpa_msg(wpa_s, MSG_WARNING, "SME: Failed to set WPA "
247 "key management and encryption suites");
6ac4b15e 248 wpas_connect_work_done(wpa_s);
c2a04078
JM		 249 return;
250 }
a3f7e518
JM		 251 } else if ((ssid->key_mgmt & WPA_KEY_MGMT_IEEE8021X_NO_WPA) &&
252 wpa_key_mgmt_wpa_ieee8021x(ssid->key_mgmt)) {
253 /*
254 * Both WPA and non-WPA IEEE 802.1X enabled in configuration -
255 * use non-WPA since the scan results did not indicate that the
256 * AP is using WPA or WPA2.
257 */
258 wpa_supplicant_set_non_wpa_policy(wpa_s, ssid);
259 wpa_s->sme.assoc_req_ie_len = 0;
0bf927a0 260 } else if (wpa_key_mgmt_wpa_any(ssid->key_mgmt)) {
c2a04078
JM		 261 wpa_s->sme.assoc_req_ie_len = sizeof(wpa_s->sme.assoc_req_ie);
262 if (wpa_supplicant_set_suites(wpa_s, NULL, ssid,
263 wpa_s->sme.assoc_req_ie,
264 &wpa_s->sme.assoc_req_ie_len)) {
f049052b
BG		 265 wpa_msg(wpa_s, MSG_WARNING, "SME: Failed to set WPA "
266 "key management and encryption suites (no "
267 "scan results)");
6ac4b15e 268 wpas_connect_work_done(wpa_s);
c2a04078
JM		 269 return;
270 }
271#ifdef CONFIG_WPS
272 } else if (ssid->key_mgmt & WPA_KEY_MGMT_WPS) {
273 struct wpabuf *wps_ie;
274 wps_ie = wps_build_assoc_req_ie(wpas_wps_get_req_type(ssid));
275 if (wps_ie && wpabuf_len(wps_ie) <=
276 sizeof(wpa_s->sme.assoc_req_ie)) {
277 wpa_s->sme.assoc_req_ie_len = wpabuf_len(wps_ie);
278 os_memcpy(wpa_s->sme.assoc_req_ie, wpabuf_head(wps_ie),
279 wpa_s->sme.assoc_req_ie_len);
280 } else
281 wpa_s->sme.assoc_req_ie_len = 0;
282 wpabuf_free(wps_ie);
283 wpa_supplicant_set_non_wpa_policy(wpa_s, ssid);
284#endif /* CONFIG_WPS */
285 } else {
286 wpa_supplicant_set_non_wpa_policy(wpa_s, ssid);
287 wpa_s->sme.assoc_req_ie_len = 0;
288 }
289
290#ifdef CONFIG_IEEE80211R
6fa81a3b 291 ie = wpa_bss_get_ie(bss, WLAN_EID_MOBILITY_DOMAIN);
c2a04078
JM		 292 if (ie && ie[1] >= MOBILITY_DOMAIN_ID_LEN)
293 md = ie + 2;
e7846b68 294 wpa_sm_set_ft_params(wpa_s->wpa, ie, ie ? 2 + ie[1] : 0);
c2a04078
JM		 295 if (md) {
296 /* Prepare for the next transition */
76b7981d 297 wpa_ft_prepare_auth_request(wpa_s->wpa, ie);
c2a04078
JM		 298 }
299
0bf927a0 300 if (md && wpa_key_mgmt_ft(ssid->key_mgmt)) {
c2a04078
JM		 301 if (wpa_s->sme.assoc_req_ie_len + 5 <
302 sizeof(wpa_s->sme.assoc_req_ie)) {
303 struct rsn_mdie *mdie;
304 u8 *pos = wpa_s->sme.assoc_req_ie +
305 wpa_s->sme.assoc_req_ie_len;
306 *pos++ = WLAN_EID_MOBILITY_DOMAIN;
307 *pos++ = sizeof(*mdie);
308 mdie = (struct rsn_mdie *) pos;
309 os_memcpy(mdie->mobility_domain, md,
310 MOBILITY_DOMAIN_ID_LEN);
f4ec630d 311 mdie->ft_capab = md[MOBILITY_DOMAIN_ID_LEN];
c2a04078
JM		 312 wpa_s->sme.assoc_req_ie_len += 5;
313 }
314
315 if (wpa_s->sme.ft_used &&
0d7b4409
JM		 316 os_memcmp(md, wpa_s->sme.mobility_domain, 2) == 0 &&
317 wpa_sm_has_ptk(wpa_s->wpa)) {
f049052b
BG		 318 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Trying to use FT "
319 "over-the-air");
abd9fafa 320 params.auth_alg = WPA_AUTH_ALG_FT;
c2a04078
JM		 321 params.ie = wpa_s->sme.ft_ies;
322 params.ie_len = wpa_s->sme.ft_ies_len;
323 }
324 }
325#endif /* CONFIG_IEEE80211R */
326
327#ifdef CONFIG_IEEE80211W
62d49803
JM		 328 wpa_s->sme.mfp = ssid->ieee80211w == MGMT_FRAME_PROTECTION_DEFAULT ?
329 wpa_s->conf->pmf : ssid->ieee80211w;
330 if (wpa_s->sme.mfp != NO_MGMT_FRAME_PROTECTION) {
6fa81a3b 331 const u8 *rsn = wpa_bss_get_ie(bss, WLAN_EID_RSN);
c2a04078
JM		 332 struct wpa_ie_data _ie;
333 if (rsn && wpa_parse_wpa_ie(rsn, 2 + rsn[1], &_ie) == 0 &&
334 _ie.capabilities &
335 (WPA_CAPABILITY_MFPC | WPA_CAPABILITY_MFPR)) {
f049052b
BG		 336 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Selected AP supports "
337 "MFP: require MFP");
c2a04078
JM		 338 wpa_s->sme.mfp = MGMT_FRAME_PROTECTION_REQUIRED;
339 }
340 }
341#endif /* CONFIG_IEEE80211W */
342
5f3a6aa0
JM		 343#ifdef CONFIG_P2P
344 if (wpa_s->global->p2p) {
345 u8 *pos;
346 size_t len;
347 int res;
5f3a6aa0
JM		 348 pos = wpa_s->sme.assoc_req_ie + wpa_s->sme.assoc_req_ie_len;
349 len = sizeof(wpa_s->sme.assoc_req_ie) -
350 wpa_s->sme.assoc_req_ie_len;
ffad8858
JM		 351 res = wpas_p2p_assoc_req_ie(wpa_s, bss, pos, len,
352 ssid->p2p_group);
5f3a6aa0
JM		 353 if (res >= 0)
354 wpa_s->sme.assoc_req_ie_len += res;
355 }
356#endif /* CONFIG_P2P */
357
cb418324 358#ifdef CONFIG_HS20
55a2df43 359 if (is_hs20_network(wpa_s, ssid, bss)) {
cb418324
JM		 360 struct wpabuf *hs20;
361 hs20 = wpabuf_alloc(20);
362 if (hs20) {
f9cd147d
JM		 363 int pps_mo_id = hs20_get_pps_mo_id(wpa_s, ssid);
364 wpas_hs20_add_indication(hs20, pps_mo_id);
cb418324
JM		 365 os_memcpy(wpa_s->sme.assoc_req_ie +
366 wpa_s->sme.assoc_req_ie_len,
367 wpabuf_head(hs20), wpabuf_len(hs20));
368 wpa_s->sme.assoc_req_ie_len += wpabuf_len(hs20);
369 wpabuf_free(hs20);
370 }
371 }
372#endif /* CONFIG_HS20 */
373
0bbaa9b9
JM		 374 ext_capab_len = wpas_build_ext_capab(wpa_s, ext_capab,
375 sizeof(ext_capab));
03e47c9c 376 if (ext_capab_len > 0) {
92cbcf91
JM		 377 u8 *pos = wpa_s->sme.assoc_req_ie;
378 if (wpa_s->sme.assoc_req_ie_len > 0 && pos[0] == WLAN_EID_RSN)
379 pos += 2 + pos[1];
03e47c9c 380 os_memmove(pos + ext_capab_len, pos,
92cbcf91
JM		 381 wpa_s->sme.assoc_req_ie_len -
382 (pos - wpa_s->sme.assoc_req_ie));
03e47c9c
JM		 383 wpa_s->sme.assoc_req_ie_len += ext_capab_len;
384 os_memcpy(pos, ext_capab, ext_capab_len);
92cbcf91 385 }
92cbcf91 386
c10347f2
JM		 387#ifdef CONFIG_SAE
388 if (params.auth_alg == WPA_AUTH_ALG_SAE) {
389 if (start)
8e31e955
JM		 390 resp = sme_auth_build_sae_commit(wpa_s, ssid,
391 bss->bssid);
c10347f2
JM		 392 else
393 resp = sme_auth_build_sae_confirm(wpa_s);
6ac4b15e
JM		 394 if (resp == NULL) {
395 wpas_connect_work_done(wpa_s);
c10347f2 396 return;
6ac4b15e 397 }
c10347f2
JM		 398 params.sae_data = wpabuf_head(resp);
399 params.sae_data_len = wpabuf_len(resp);
dd43026a 400 wpa_s->sme.sae.state = start ? SAE_COMMITTED : SAE_CONFIRMED;
c10347f2
JM		 401 }
402#endif /* CONFIG_SAE */
403
a4cba8f1 404 wpa_supplicant_cancel_sched_scan(wpa_s);
c2a04078
JM		 405 wpa_supplicant_cancel_scan(wpa_s);
406
f049052b 407 wpa_msg(wpa_s, MSG_INFO, "SME: Trying to authenticate with " MACSTR
c2a04078
JM		 408 " (SSID='%s' freq=%d MHz)", MAC2STR(params.bssid),
409 wpa_ssid_txt(params.ssid, params.ssid_len), params.freq);
410
411 wpa_clear_keys(wpa_s, bss->bssid);
412 wpa_supplicant_set_state(wpa_s, WPA_AUTHENTICATING);
8bac466b 413 old_ssid = wpa_s->current_ssid;
c2a04078
JM		 414 wpa_s->current_ssid = ssid;
415 wpa_supplicant_rsn_supp_set_config(wpa_s, wpa_s->current_ssid);
416 wpa_supplicant_initiate_eapol(wpa_s);
8bac466b
JM		 417 if (old_ssid != wpa_s->current_ssid)
418 wpas_notify_network_changed(wpa_s);
c2a04078 419
d0df6437
IP		 420#ifdef CONFIG_P2P
421 /*
422 * If multi-channel concurrency is not supported, check for any
423 * frequency conflict. In case of any frequency conflict, remove the
424 * least prioritized connection.
425 */
426 if (wpa_s->num_multichan_concurrent < 2) {
427 int freq, num;
428 num = get_shared_radio_freqs(wpa_s, &freq, 1);
429 if (num > 0 && freq > 0 && freq != params.freq) {
430 wpa_printf(MSG_DEBUG,
431 "Conflicting frequency found (%d != %d)",
432 freq, params.freq);
433 if (wpas_p2p_handle_frequency_conflicts(wpa_s,
434 params.freq,
435 ssid) < 0) {
436 wpas_connection_failed(wpa_s, bss->bssid);
437 wpa_supplicant_mark_disassoc(wpa_s);
438 wpabuf_free(resp);
439 wpas_connect_work_done(wpa_s);
440 return;
441 }
442 }
443 }
444#endif /* CONFIG_P2P */
445
62c72d72 446 wpa_s->sme.auth_alg = params.auth_alg;
c2a04078 447 if (wpa_drv_authenticate(wpa_s, &params) < 0) {
f049052b 448 wpa_msg(wpa_s, MSG_INFO, "SME: Authentication request to the "
c2a04078 449 "driver failed");
ed57c590 450 wpas_connection_failed(wpa_s, bss->bssid);
1193dc8f 451 wpa_supplicant_mark_disassoc(wpa_s);
c10347f2 452 wpabuf_free(resp);
6ac4b15e 453 wpas_connect_work_done(wpa_s);
c2a04078
JM		 454 return;
455 }
456
e29853bb
BG		 457 eloop_register_timeout(SME_AUTH_TIMEOUT, 0, sme_auth_timer, wpa_s,
458 NULL);
c2a04078
JM		 459
460 /*
461 * Association will be started based on the authentication event from
462 * the driver.
463 */
c10347f2
JM		 464
465 wpabuf_free(resp);
466}
467
468
6ac4b15e
JM		 469static void sme_auth_start_cb(struct wpa_radio_work *work, int deinit)
470{
471 struct wpa_connect_work *cwork = work->ctx;
472 struct wpa_supplicant *wpa_s = work->wpa_s;
473
474 if (deinit) {
b3253ebb
AO		 475 if (work->started)
476 wpa_s->connect_work = NULL;
477
6ac4b15e
JM		 478 wpas_connect_work_free(cwork);
479 return;
480 }
481
482 wpa_s->connect_work = work;
483
484 if (!wpas_valid_bss_ssid(wpa_s, cwork->bss, cwork->ssid)) {
485 wpa_dbg(wpa_s, MSG_DEBUG, "SME: BSS/SSID entry for authentication not valid anymore - drop connection attempt");
486 wpas_connect_work_done(wpa_s);
487 return;
488 }
489
490 sme_send_authentication(wpa_s, cwork->bss, cwork->ssid, 1);
491}
492
493
c10347f2
JM		 494void sme_authenticate(struct wpa_supplicant *wpa_s,
495 struct wpa_bss *bss, struct wpa_ssid *ssid)
496{
6ac4b15e
JM		 497 struct wpa_connect_work *cwork;
498
499 if (bss == NULL || ssid == NULL)
500 return;
501 if (wpa_s->connect_work) {
502 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Reject sme_authenticate() call since connect_work exist");
503 return;
504 }
505
f0e30c84 506 if (radio_work_pending(wpa_s, "sme-connect")) {
f1c4dbf5
IP		 507 /*
508 * The previous sme-connect work might no longer be valid due to
509 * the fact that the BSS list was updated. In addition, it makes
510 * sense to adhere to the 'newer' decision.
511 */
512 wpa_dbg(wpa_s, MSG_DEBUG,
513 "SME: Remove previous pending sme-connect");
514 radio_remove_works(wpa_s, "sme-connect", 0);
f0e30c84
JM		 515 }
516
6ac4b15e
JM		 517 cwork = os_zalloc(sizeof(*cwork));
518 if (cwork == NULL)
519 return;
520 cwork->bss = bss;
521 cwork->ssid = ssid;
522 cwork->sme = 1;
523
98efcc41 524#ifdef CONFIG_SAE
dd43026a 525 wpa_s->sme.sae.state = SAE_NOTHING;
98efcc41 526 wpa_s->sme.sae.send_confirm = 0;
18ca7332 527 wpa_s->sme.sae_group_index = 0;
98efcc41 528#endif /* CONFIG_SAE */
6ac4b15e
JM		 529
530 if (radio_add_work(wpa_s, bss->freq, "sme-connect", 1,
531 sme_auth_start_cb, cwork) < 0)
532 wpas_connect_work_free(cwork);
c2a04078
JM		 533}
534
535
c10347f2 536#ifdef CONFIG_SAE
21af6d15 537
c10347f2
JM		 538static int sme_sae_auth(struct wpa_supplicant *wpa_s, u16 auth_transaction,
539 u16 status_code, const u8 *data, size_t len)
540{
541 wpa_dbg(wpa_s, MSG_DEBUG, "SME: SAE authentication transaction %u "
542 "status code %u", auth_transaction, status_code);
c10347f2 543
d136c376
JM		 544 if (auth_transaction == 1 &&
545 status_code == WLAN_STATUS_ANTI_CLOGGING_TOKEN_REQ &&
546 wpa_s->sme.sae.state == SAE_COMMITTED &&
547 wpa_s->current_bss && wpa_s->current_ssid) {
548 wpa_dbg(wpa_s, MSG_DEBUG, "SME: SAE anti-clogging token "
549 "requested");
550 wpabuf_free(wpa_s->sme.sae_token);
551 wpa_s->sme.sae_token = wpabuf_alloc_copy(data, len);
552 sme_send_authentication(wpa_s, wpa_s->current_bss,
553 wpa_s->current_ssid, 1);
554 return 0;
555 }
556
625f202a
JM		 557 if (auth_transaction == 1 &&
558 status_code == WLAN_STATUS_FINITE_CYCLIC_GROUP_NOT_SUPPORTED &&
559 wpa_s->sme.sae.state == SAE_COMMITTED &&
560 wpa_s->current_bss && wpa_s->current_ssid) {
561 wpa_dbg(wpa_s, MSG_DEBUG, "SME: SAE group not supported");
562 wpa_s->sme.sae_group_index++;
563 if (sme_set_sae_group(wpa_s) < 0)
564 return -1; /* no other groups enabled */
565 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Try next enabled SAE group");
566 sme_send_authentication(wpa_s, wpa_s->current_bss,
567 wpa_s->current_ssid, 1);
568 return 0;
569 }
570
c10347f2
JM		 571 if (status_code != WLAN_STATUS_SUCCESS)
572 return -1;
573
574 if (auth_transaction == 1) {
18ca7332
JM		 575 int *groups = wpa_s->conf->sae_groups;
576
c10347f2
JM		 577 wpa_dbg(wpa_s, MSG_DEBUG, "SME SAE commit");
578 if (wpa_s->current_bss == NULL ||
579 wpa_s->current_ssid == NULL)
580 return -1;
dd43026a 581 if (wpa_s->sme.sae.state != SAE_COMMITTED)
21af6d15 582 return -1;
18ca7332
JM		 583 if (groups && groups[0] <= 0)
584 groups = NULL;
625f202a 585 if (sae_parse_commit(&wpa_s->sme.sae, data, len, NULL, NULL,
18ca7332 586 groups) != WLAN_STATUS_SUCCESS)
21af6d15 587 return -1;
146f6c9a
JM		 588
589 if (sae_process_commit(&wpa_s->sme.sae) < 0) {
590 wpa_printf(MSG_DEBUG, "SAE: Failed to process peer "
591 "commit");
592 return -1;
593 }
594
d136c376
JM		 595 wpabuf_free(wpa_s->sme.sae_token);
596 wpa_s->sme.sae_token = NULL;
c10347f2
JM		 597 sme_send_authentication(wpa_s, wpa_s->current_bss,
598 wpa_s->current_ssid, 0);
599 return 0;
600 } else if (auth_transaction == 2) {
601 wpa_dbg(wpa_s, MSG_DEBUG, "SME SAE confirm");
dd43026a 602 if (wpa_s->sme.sae.state != SAE_CONFIRMED)
21af6d15 603 return -1;
f2e9818f 604 if (sae_check_confirm(&wpa_s->sme.sae, data, len) < 0)
21af6d15 605 return -1;
dd43026a 606 wpa_s->sme.sae.state = SAE_ACCEPTED;
b4fd3613 607 sae_clear_temp_data(&wpa_s->sme.sae);
c10347f2
JM		 608 return 1;
609 }
610
611 return -1;
612}
613#endif /* CONFIG_SAE */
614
615
c2a04078
JM		 616void sme_event_auth(struct wpa_supplicant *wpa_s, union wpa_event_data *data)
617{
c2a04078
JM		 618 struct wpa_ssid *ssid = wpa_s->current_ssid;
619
620 if (ssid == NULL) {
f049052b
BG		 621 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Ignore authentication event "
622 "when network is not selected");
c2a04078
JM		 623 return;
624 }
625
626 if (wpa_s->wpa_state != WPA_AUTHENTICATING) {
f049052b
BG		 627 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Ignore authentication event "
628 "when not in authenticating state");
c2a04078
JM		 629 return;
630 }
631
632 if (os_memcmp(wpa_s->pending_bssid, data->auth.peer, ETH_ALEN) != 0) {
f049052b
BG		 633 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Ignore authentication with "
634 "unexpected peer " MACSTR,
635 MAC2STR(data->auth.peer));
c2a04078
JM		 636 return;
637 }
638
f049052b 639 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Authentication response: peer=" MACSTR
c10347f2 640 " auth_type=%d auth_transaction=%d status_code=%d",
f049052b 641 MAC2STR(data->auth.peer), data->auth.auth_type,
c10347f2 642 data->auth.auth_transaction, data->auth.status_code);
c2a04078
JM		 643 wpa_hexdump(MSG_MSGDUMP, "SME: Authentication response IEs",
644 data->auth.ies, data->auth.ies_len);
645
e29853bb
BG		 646 eloop_cancel_timeout(sme_auth_timer, wpa_s, NULL);
647
c10347f2
JM		 648#ifdef CONFIG_SAE
649 if (data->auth.auth_type == WLAN_AUTH_SAE) {
21af6d15
JM		 650 int res;
651 res = sme_sae_auth(wpa_s, data->auth.auth_transaction,
652 data->auth.status_code, data->auth.ies,
653 data->auth.ies_len);
654 if (res < 0) {
655 wpas_connection_failed(wpa_s, wpa_s->pending_bssid);
656 wpa_supplicant_set_state(wpa_s, WPA_DISCONNECTED);
657
658 }
659 if (res != 1)
c10347f2 660 return;
47b55a3e
JM		 661
662 wpa_printf(MSG_DEBUG, "SME: SAE completed - setting PMK for "
663 "4-way handshake");
664 wpa_sm_set_pmk(wpa_s->wpa, wpa_s->sme.sae.pmk, PMK_LEN);
c10347f2
JM		 665 }
666#endif /* CONFIG_SAE */
667
c2a04078 668 if (data->auth.status_code != WLAN_STATUS_SUCCESS) {
f049052b
BG		 669 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Authentication failed (status "
670 "code %d)", data->auth.status_code);
cb1583f6
SO		 671
672 if (data->auth.status_code !=
673 WLAN_STATUS_NOT_SUPPORTED_AUTH_ALG ||
674 wpa_s->sme.auth_alg == data->auth.auth_type ||
7e6646c7 675 wpa_s->current_ssid->auth_alg == WPA_AUTH_ALG_LEAP) {
0fb337c1 676 wpas_connection_failed(wpa_s, wpa_s->pending_bssid);
c1c02342 677 wpa_supplicant_set_state(wpa_s, WPA_DISCONNECTED);
cb1583f6 678 return;
7e6646c7 679 }
cb1583f6 680
d9504779
JM		 681 wpas_connect_work_done(wpa_s);
682
cb1583f6
SO		 683 switch (data->auth.auth_type) {
684 case WLAN_AUTH_OPEN:
685 wpa_s->current_ssid->auth_alg = WPA_AUTH_ALG_SHARED;
686
f049052b 687 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Trying SHARED auth");
cb1583f6
SO		 688 wpa_supplicant_associate(wpa_s, wpa_s->current_bss,
689 wpa_s->current_ssid);
690 return;
691
692 case WLAN_AUTH_SHARED_KEY:
693 wpa_s->current_ssid->auth_alg = WPA_AUTH_ALG_LEAP;
694
f049052b 695 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Trying LEAP auth");
cb1583f6
SO		 696 wpa_supplicant_associate(wpa_s, wpa_s->current_bss,
697 wpa_s->current_ssid);
698 return;
699
700 default:
701 return;
702 }
c2a04078
JM		 703 }
704
705#ifdef CONFIG_IEEE80211R
706 if (data->auth.auth_type == WLAN_AUTH_FT) {
707 union wpa_event_data edata;
708 os_memset(&edata, 0, sizeof(edata));
709 edata.ft_ies.ies = data->auth.ies;
710 edata.ft_ies.ies_len = data->auth.ies_len;
711 os_memcpy(edata.ft_ies.target_ap, data->auth.peer, ETH_ALEN);
712 wpa_supplicant_event(wpa_s, EVENT_FT_RESPONSE, &edata);
713 }
714#endif /* CONFIG_IEEE80211R */
715
71024cb2
JM		 716 sme_associate(wpa_s, ssid->mode, data->auth.peer,
717 data->auth.auth_type);
718}
719
720
721void sme_associate(struct wpa_supplicant *wpa_s, enum wpas_mode mode,
722 const u8 *bssid, u16 auth_type)
723{
724 struct wpa_driver_associate_params params;
d9a27b04 725 struct ieee802_11_elems elems;
80e8a5ee
BG		 726#ifdef CONFIG_HT_OVERRIDES
727 struct ieee80211_ht_capabilities htcaps;
728 struct ieee80211_ht_capabilities htcaps_mask;
729#endif /* CONFIG_HT_OVERRIDES */
e9ee8dc3
JB		 730#ifdef CONFIG_VHT_OVERRIDES
731 struct ieee80211_vht_capabilities vhtcaps;
732 struct ieee80211_vht_capabilities vhtcaps_mask;
733#endif /* CONFIG_VHT_OVERRIDES */
71024cb2 734
c2a04078 735 os_memset(&params, 0, sizeof(params));
71024cb2 736 params.bssid = bssid;
c2a04078
JM		 737 params.ssid = wpa_s->sme.ssid;
738 params.ssid_len = wpa_s->sme.ssid_len;
739 params.freq = wpa_s->sme.freq;
1f6c0ab8
BS		 740 params.bg_scan_period = wpa_s->current_ssid ?
741 wpa_s->current_ssid->bg_scan_period : -1;
c2a04078
JM		 742 params.wpa_ie = wpa_s->sme.assoc_req_ie_len ?
743 wpa_s->sme.assoc_req_ie : NULL;
744 params.wpa_ie_len = wpa_s->sme.assoc_req_ie_len;
4848a38d
JM		 745 params.pairwise_suite = wpa_s->pairwise_cipher;
746 params.group_suite = wpa_s->group_cipher;
163f801e
JM		 747 params.key_mgmt_suite = wpa_s->key_mgmt;
748 params.wpa_proto = wpa_s->wpa_proto;
80e8a5ee
BG		 749#ifdef CONFIG_HT_OVERRIDES
750 os_memset(&htcaps, 0, sizeof(htcaps));
751 os_memset(&htcaps_mask, 0, sizeof(htcaps_mask));
752 params.htcaps = (u8 *) &htcaps;
753 params.htcaps_mask = (u8 *) &htcaps_mask;
754 wpa_supplicant_apply_ht_overrides(wpa_s, wpa_s->current_ssid, &params);
755#endif /* CONFIG_HT_OVERRIDES */
e9ee8dc3
JB		 756#ifdef CONFIG_VHT_OVERRIDES
757 os_memset(&vhtcaps, 0, sizeof(vhtcaps));
758 os_memset(&vhtcaps_mask, 0, sizeof(vhtcaps_mask));
759 params.vhtcaps = &vhtcaps;
760 params.vhtcaps_mask = &vhtcaps_mask;
761 wpa_supplicant_apply_vht_overrides(wpa_s, wpa_s->current_ssid, &params);
762#endif /* CONFIG_VHT_OVERRIDES */
c2a04078 763#ifdef CONFIG_IEEE80211R
71024cb2 764 if (auth_type == WLAN_AUTH_FT && wpa_s->sme.ft_ies) {
c2a04078
JM		 765 params.wpa_ie = wpa_s->sme.ft_ies;
766 params.wpa_ie_len = wpa_s->sme.ft_ies_len;
767 }
768#endif /* CONFIG_IEEE80211R */
71024cb2 769 params.mode = mode;
c2a04078 770 params.mgmt_frame_protection = wpa_s->sme.mfp;
62fa124c
JM		 771 if (wpa_s->sme.prev_bssid_set)
772 params.prev_bssid = wpa_s->sme.prev_bssid;
c2a04078
JM		 773
774 wpa_msg(wpa_s, MSG_INFO, "Trying to associate with " MACSTR
775 " (SSID='%s' freq=%d MHz)", MAC2STR(params.bssid),
776 params.ssid ? wpa_ssid_txt(params.ssid, params.ssid_len) : "",
777 params.freq);
778
779 wpa_supplicant_set_state(wpa_s, WPA_ASSOCIATING);
780
9efc3f2a
JM		 781 if (params.wpa_ie == NULL ||
782 ieee802_11_parse_elems(params.wpa_ie, params.wpa_ie_len, &elems, 0)
d9a27b04 783 < 0) {
f049052b 784 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Could not parse own IEs?!");
d9a27b04
JM		 785 os_memset(&elems, 0, sizeof(elems));
786 }
64fa840a
JM		 787 if (elems.rsn_ie) {
788 params.wpa_proto = WPA_PROTO_RSN;
d9a27b04
JM		 789 wpa_sm_set_assoc_wpa_ie(wpa_s->wpa, elems.rsn_ie - 2,
790 elems.rsn_ie_len + 2);
64fa840a
JM		 791 } else if (elems.wpa_ie) {
792 params.wpa_proto = WPA_PROTO_WPA;
d9a27b04
JM		 793 wpa_sm_set_assoc_wpa_ie(wpa_s->wpa, elems.wpa_ie - 2,
794 elems.wpa_ie_len + 2);
df0f01d9
JM		 795 } else if (elems.osen) {
796 params.wpa_proto = WPA_PROTO_OSEN;
797 wpa_sm_set_assoc_wpa_ie(wpa_s->wpa, elems.osen - 2,
798 elems.osen_len + 2);
64fa840a 799 } else
d9a27b04 800 wpa_sm_set_assoc_wpa_ie(wpa_s->wpa, NULL, 0);
ffad8858 801 if (wpa_s->current_ssid && wpa_s->current_ssid->p2p_group)
6e3f4b89 802 params.p2p = 1;
d9a27b04 803
eea2fd9e
JM		 804 if (wpa_s->parent->set_sta_uapsd)
805 params.uapsd = wpa_s->parent->sta_uapsd;
806 else
807 params.uapsd = -1;
808
c2a04078 809 if (wpa_drv_associate(wpa_s, &params) < 0) {
f049052b
BG		 810 wpa_msg(wpa_s, MSG_INFO, "SME: Association request to the "
811 "driver failed");
e5ad96b7 812 wpas_connection_failed(wpa_s, wpa_s->pending_bssid);
c1c02342 813 wpa_supplicant_set_state(wpa_s, WPA_DISCONNECTED);
e5ad96b7 814 os_memset(wpa_s->pending_bssid, 0, ETH_ALEN);
c2a04078
JM		 815 return;
816 }
817
e29853bb
BG		 818 eloop_register_timeout(SME_ASSOC_TIMEOUT, 0, sme_assoc_timer, wpa_s,
819 NULL);
c2a04078
JM		 820}
821
822
823int sme_update_ft_ies(struct wpa_supplicant *wpa_s, const u8 *md,
824 const u8 *ies, size_t ies_len)
825{
826 if (md == NULL || ies == NULL) {
f049052b 827 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Remove mobility domain");
c2a04078
JM		 828 os_free(wpa_s->sme.ft_ies);
829 wpa_s->sme.ft_ies = NULL;
830 wpa_s->sme.ft_ies_len = 0;
831 wpa_s->sme.ft_used = 0;
832 return 0;
833 }
834
835 os_memcpy(wpa_s->sme.mobility_domain, md, MOBILITY_DOMAIN_ID_LEN);
836 wpa_hexdump(MSG_DEBUG, "SME: FT IEs", ies, ies_len);
837 os_free(wpa_s->sme.ft_ies);
838 wpa_s->sme.ft_ies = os_malloc(ies_len);
839 if (wpa_s->sme.ft_ies == NULL)
840 return -1;
841 os_memcpy(wpa_s->sme.ft_ies, ies, ies_len);
842 wpa_s->sme.ft_ies_len = ies_len;
843 return 0;
844}
efa46078
JM		 845
846
e29853bb 847static void sme_deauth(struct wpa_supplicant *wpa_s)
efa46078 848{
8bac466b
JM		 849 int bssid_changed;
850
8bac466b 851 bssid_changed = !is_zero_ether_addr(wpa_s->bssid);
76d11d3f 852
76d11d3f
JM		 853 if (wpa_drv_deauthenticate(wpa_s, wpa_s->pending_bssid,
854 WLAN_REASON_DEAUTH_LEAVING) < 0) {
f049052b
BG		 855 wpa_msg(wpa_s, MSG_INFO, "SME: Deauth request to the driver "
856 "failed");
76d11d3f 857 }
62fa124c 858 wpa_s->sme.prev_bssid_set = 0;
76d11d3f 859
0fb337c1 860 wpas_connection_failed(wpa_s, wpa_s->pending_bssid);
76d11d3f 861 wpa_supplicant_set_state(wpa_s, WPA_DISCONNECTED);
efa46078
JM		 862 os_memset(wpa_s->bssid, 0, ETH_ALEN);
863 os_memset(wpa_s->pending_bssid, 0, ETH_ALEN);
8bac466b
JM		 864 if (bssid_changed)
865 wpas_notify_bssid_changed(wpa_s);
efa46078 866}
da1fb17c
JM		 867
868
e29853bb
BG		 869void sme_event_assoc_reject(struct wpa_supplicant *wpa_s,
870 union wpa_event_data *data)
871{
872 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Association with " MACSTR " failed: "
873 "status code %d", MAC2STR(wpa_s->pending_bssid),
874 data->assoc_reject.status_code);
875
876 eloop_cancel_timeout(sme_assoc_timer, wpa_s, NULL);
877
878 /*
879 * For now, unconditionally terminate the previous authentication. In
880 * theory, this should not be needed, but mac80211 gets quite confused
881 * if the authentication is left pending.. Some roaming cases might
882 * benefit from using the previous authentication, so this could be
883 * optimized in the future.
884 */
885 sme_deauth(wpa_s);
886}
887
888
da1fb17c
JM		 889void sme_event_auth_timed_out(struct wpa_supplicant *wpa_s,
890 union wpa_event_data *data)
891{
f049052b 892 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Authentication timed out");
0fb337c1 893 wpas_connection_failed(wpa_s, wpa_s->pending_bssid);
1193dc8f 894 wpa_supplicant_mark_disassoc(wpa_s);
da1fb17c
JM		 895}
896
897
898void sme_event_assoc_timed_out(struct wpa_supplicant *wpa_s,
899 union wpa_event_data *data)
900{
f049052b 901 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Association timed out");
0fb337c1 902 wpas_connection_failed(wpa_s, wpa_s->pending_bssid);
da1fb17c 903 wpa_supplicant_mark_disassoc(wpa_s);
da1fb17c 904}
a84ed99e
JM		 905
906
907void sme_event_disassoc(struct wpa_supplicant *wpa_s,
d7df0fa7 908 struct disassoc_info *info)
a84ed99e 909{
f049052b 910 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Disassociation event received");
17fbb751 911 if (wpa_s->sme.prev_bssid_set) {
a84ed99e
JM		 912 /*
913 * cfg80211/mac80211 can get into somewhat confused state if
914 * the AP only disassociates us and leaves us in authenticated
915 * state. For now, force the state to be cleared to avoid
916 * confusing errors if we try to associate with the AP again.
917 */
f049052b
BG		 918 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Deauthenticate to clear "
919 "driver state");
7e26053a 920 wpa_drv_deauthenticate(wpa_s, wpa_s->sme.prev_bssid,
a84ed99e
JM		 921 WLAN_REASON_DEAUTH_LEAVING);
922 }
923}
7d878ca7
JM		 924
925
e29853bb
BG		 926static void sme_auth_timer(void *eloop_ctx, void *timeout_ctx)
927{
928 struct wpa_supplicant *wpa_s = eloop_ctx;
929 if (wpa_s->wpa_state == WPA_AUTHENTICATING) {
930 wpa_msg(wpa_s, MSG_DEBUG, "SME: Authentication timeout");
931 sme_deauth(wpa_s);
932 }
933}
934
935
936static void sme_assoc_timer(void *eloop_ctx, void *timeout_ctx)
937{
938 struct wpa_supplicant *wpa_s = eloop_ctx;
939 if (wpa_s->wpa_state == WPA_ASSOCIATING) {
940 wpa_msg(wpa_s, MSG_DEBUG, "SME: Association timeout");
941 sme_deauth(wpa_s);
942 }
943}
944
945
946void sme_state_changed(struct wpa_supplicant *wpa_s)
947{
948 /* Make sure timers are cleaned up appropriately. */
949 if (wpa_s->wpa_state != WPA_ASSOCIATING)
950 eloop_cancel_timeout(sme_assoc_timer, wpa_s, NULL);
951 if (wpa_s->wpa_state != WPA_AUTHENTICATING)
952 eloop_cancel_timeout(sme_auth_timer, wpa_s, NULL);
953}
954
955
956void sme_disassoc_while_authenticating(struct wpa_supplicant *wpa_s,
957 const u8 *prev_pending_bssid)
958{
959 /*
960 * mac80211-workaround to force deauth on failed auth cmd,
961 * requires us to remain in authenticating state to allow the
962 * second authentication attempt to be continued properly.
963 */
964 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Allow pending authentication "
965 "to proceed after disconnection event");
966 wpa_supplicant_set_state(wpa_s, WPA_AUTHENTICATING);
967 os_memcpy(wpa_s->pending_bssid, prev_pending_bssid, ETH_ALEN);
968
969 /*
970 * Re-arm authentication timer in case auth fails for whatever reason.
971 */
972 eloop_cancel_timeout(sme_auth_timer, wpa_s, NULL);
973 eloop_register_timeout(SME_AUTH_TIMEOUT, 0, sme_auth_timer, wpa_s,
974 NULL);
975}
976
977
978void sme_deinit(struct wpa_supplicant *wpa_s)
979{
980 os_free(wpa_s->sme.ft_ies);
981 wpa_s->sme.ft_ies = NULL;
982 wpa_s->sme.ft_ies_len = 0;
983#ifdef CONFIG_IEEE80211W
984 sme_stop_sa_query(wpa_s);
985#endif /* CONFIG_IEEE80211W */
d136c376
JM		 986#ifdef CONFIG_SAE
987 wpabuf_free(wpa_s->sme.sae_token);
988 wpa_s->sme.sae_token = NULL;
a46d72d7 989 sae_clear_data(&wpa_s->sme.sae);
d136c376 990#endif /* CONFIG_SAE */
e29853bb
BG		 991
992 eloop_cancel_timeout(sme_assoc_timer, wpa_s, NULL);
993 eloop_cancel_timeout(sme_auth_timer, wpa_s, NULL);
c3701c66
RM		 994 eloop_cancel_timeout(sme_obss_scan_timeout, wpa_s, NULL);
995}
996
997
998static void sme_send_2040_bss_coex(struct wpa_supplicant *wpa_s,
999 const u8 *chan_list, u8 num_channels,
1000 u8 num_intol)
1001{
1002 struct ieee80211_2040_bss_coex_ie *bc_ie;
1003 struct ieee80211_2040_intol_chan_report *ic_report;
1004 struct wpabuf *buf;
1005
31ded52e
JM		 1006 wpa_printf(MSG_DEBUG, "SME: Send 20/40 BSS Coexistence to " MACSTR
1007 " (num_channels=%u num_intol=%u)",
1008 MAC2STR(wpa_s->bssid), num_channels, num_intol);
1009 wpa_hexdump(MSG_DEBUG, "SME: 20/40 BSS Intolerant Channels",
1010 chan_list, num_channels);
c3701c66
RM		 1011
1012 buf = wpabuf_alloc(2 + /* action.category + action_code */
1013 sizeof(struct ieee80211_2040_bss_coex_ie) +
1014 sizeof(struct ieee80211_2040_intol_chan_report) +
1015 num_channels);
1016 if (buf == NULL)
1017 return;
1018
1019 wpabuf_put_u8(buf, WLAN_ACTION_PUBLIC);
1020 wpabuf_put_u8(buf, WLAN_PA_20_40_BSS_COEX);
1021
1022 bc_ie = wpabuf_put(buf, sizeof(*bc_ie));
1023 bc_ie->element_id = WLAN_EID_20_40_BSS_COEXISTENCE;
1024 bc_ie->length = 1;
1025 if (num_intol)
1026 bc_ie->coex_param |= WLAN_20_40_BSS_COEX_20MHZ_WIDTH_REQ;
1027
1028 if (num_channels > 0) {
1029 ic_report = wpabuf_put(buf, sizeof(*ic_report));
1030 ic_report->element_id = WLAN_EID_20_40_BSS_INTOLERANT;
1031 ic_report->length = num_channels + 1;
1032 ic_report->op_class = 0;
1033 os_memcpy(wpabuf_put(buf, num_channels), chan_list,
1034 num_channels);
1035 }
1036
1037 if (wpa_drv_send_action(wpa_s, wpa_s->assoc_freq, 0, wpa_s->bssid,
1038 wpa_s->own_addr, wpa_s->bssid,
1039 wpabuf_head(buf), wpabuf_len(buf), 0) < 0) {
1040 wpa_msg(wpa_s, MSG_INFO,
1041 "SME: Failed to send 20/40 BSS Coexistence frame");
1042 }
1043
1044 wpabuf_free(buf);
1045}
1046
1047
c3701c66
RM		 1048int sme_proc_obss_scan(struct wpa_supplicant *wpa_s)
1049{
1050 struct wpa_bss *bss;
1051 const u8 *ie;
1052 u16 ht_cap;
1053 u8 chan_list[P2P_MAX_CHANNELS], channel;
1054 u8 num_channels = 0, num_intol = 0, i;
1055
1056 if (!wpa_s->sme.sched_obss_scan)
1057 return 0;
1058
1059 wpa_s->sme.sched_obss_scan = 0;
1060 if (!wpa_s->current_bss || wpa_s->wpa_state != WPA_COMPLETED)
1061 return 1;
1062
1063 /*
1064 * Check whether AP uses regulatory triplet or channel triplet in
1065 * country info. Right now the operating class of the BSS channel
1066 * width trigger event is "unknown" (IEEE Std 802.11-2012 10.15.12),
1067 * based on the assumption that operating class triplet is not used in
1068 * beacon frame. If the First Channel Number/Operating Extension
1069 * Identifier octet has a positive integer value of 201 or greater,
1070 * then its operating class triplet.
1071 *
1072 * TODO: If Supported Operating Classes element is present in beacon
1073 * frame, have to lookup operating class in Annex E and fill them in
1074 * 2040 coex frame.
1075 */
1076 ie = wpa_bss_get_ie(wpa_s->current_bss, WLAN_EID_COUNTRY);
1077 if (ie && (ie[1] >= 6) && (ie[5] >= 201))
1078 return 1;
1079
1080 os_memset(chan_list, 0, sizeof(chan_list));
1081
1082 dl_list_for_each(bss, &wpa_s->bss, struct wpa_bss, list) {
1083 /* Skip other band bss */
e864c0ae
JM		 1084 enum hostapd_hw_mode mode;
1085 mode = ieee80211_freq_to_chan(bss->freq, &channel);
1086 if (mode != HOSTAPD_MODE_IEEE80211G &&
1087 mode != HOSTAPD_MODE_IEEE80211B)
c3701c66
RM		 1088 continue;
1089
1090 ie = wpa_bss_get_ie(bss, WLAN_EID_HT_CAP);
1091 ht_cap = (ie && (ie[1] == 26)) ? WPA_GET_LE16(ie + 2) : 0;
31ded52e
JM		 1092 wpa_printf(MSG_DEBUG, "SME OBSS scan BSS " MACSTR
1093 " freq=%u chan=%u ht_cap=0x%x",
1094 MAC2STR(bss->bssid), bss->freq, channel, ht_cap);
c3701c66
RM		 1095
1096 if (!ht_cap || (ht_cap & HT_CAP_INFO_40MHZ_INTOLERANT)) {
7f8eb34d
JM		 1097 if (ht_cap & HT_CAP_INFO_40MHZ_INTOLERANT)
1098 num_intol++;
1099
c3701c66
RM		 1100 /* Check whether the channel is already considered */
1101 for (i = 0; i < num_channels; i++) {
1102 if (channel == chan_list[i])
1103 break;
1104 }
1105 if (i != num_channels)
1106 continue;
1107
c3701c66
RM		 1108 chan_list[num_channels++] = channel;
1109 }
1110 }
1111
1112 sme_send_2040_bss_coex(wpa_s, chan_list, num_channels, num_intol);
1113 return 1;
1114}
1115
1116
6434ad09
JM		 1117static struct hostapd_hw_modes * get_mode(struct hostapd_hw_modes *modes,
1118 u16 num_modes,
1119 enum hostapd_hw_mode mode)
1120{
1121 u16 i;
1122
1123 for (i = 0; i < num_modes; i++) {
1124 if (modes[i].mode == mode)
1125 return &modes[i];
1126 }
1127
1128 return NULL;
1129}
1130
1131
1132static void wpa_setband_scan_freqs_list(struct wpa_supplicant *wpa_s,
1133 enum hostapd_hw_mode band,
1134 struct wpa_driver_scan_params *params)
1135{
1136 /* Include only supported channels for the specified band */
1137 struct hostapd_hw_modes *mode;
1138 int count, i;
1139
1140 mode = get_mode(wpa_s->hw.modes, wpa_s->hw.num_modes, band);
1141 if (mode == NULL) {
1142 /* No channels supported in this band - use empty list */
1143 params->freqs = os_zalloc(sizeof(int));
1144 return;
1145 }
1146
f9884c09 1147 params->freqs = os_calloc(mode->num_channels + 1, sizeof(int));
6434ad09
JM		 1148 if (params->freqs == NULL)
1149 return;
1150 for (count = 0, i = 0; i < mode->num_channels; i++) {
1151 if (mode->channels[i].flag & HOSTAPD_CHAN_DISABLED)
1152 continue;
1153 params->freqs[count++] = mode->channels[i].freq;
1154 }
1155}
1156
1157
c3701c66
RM		 1158static void sme_obss_scan_timeout(void *eloop_ctx, void *timeout_ctx)
1159{
1160 struct wpa_supplicant *wpa_s = eloop_ctx;
1161 struct wpa_driver_scan_params params;
1162
1163 if (!wpa_s->current_bss) {
1164 wpa_printf(MSG_DEBUG, "SME OBSS: Ignore scan request");
1165 return;
1166 }
1167
1168 os_memset(&params, 0, sizeof(params));
6434ad09 1169 wpa_setband_scan_freqs_list(wpa_s, HOSTAPD_MODE_IEEE80211G, &params);
c3701c66
RM		 1170 wpa_printf(MSG_DEBUG, "SME OBSS: Request an OBSS scan");
1171
1172 if (wpa_supplicant_trigger_scan(wpa_s, &params))
1173 wpa_printf(MSG_DEBUG, "SME OBSS: Failed to trigger scan");
1174 else
1175 wpa_s->sme.sched_obss_scan = 1;
6434ad09 1176 os_free(params.freqs);
c3701c66
RM		 1177
1178 eloop_register_timeout(wpa_s->sme.obss_scan_int, 0,
1179 sme_obss_scan_timeout, wpa_s, NULL);
1180}
1181
1182
1183void sme_sched_obss_scan(struct wpa_supplicant *wpa_s, int enable)
1184{
1185 const u8 *ie;
1186 struct wpa_bss *bss = wpa_s->current_bss;
1187 struct wpa_ssid *ssid = wpa_s->current_ssid;
b6871ebb
AN		 1188 struct hostapd_hw_modes *hw_mode = NULL;
1189 int i;
c3701c66
RM		 1190
1191 eloop_cancel_timeout(sme_obss_scan_timeout, wpa_s, NULL);
1192 wpa_s->sme.sched_obss_scan = 0;
1193 if (!enable)
1194 return;
1195
368b1957
AK		 1196 /*
1197 * Schedule OBSS scan if driver is using station SME in wpa_supplicant
1198 * or it expects OBSS scan to be performed by wpa_supplicant.
1199 */
1200 if (!((wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME) ||
1201 (wpa_s->drv_flags & WPA_DRIVER_FLAGS_OBSS_SCAN)) ||
1202 ssid == NULL || ssid->mode != IEEE80211_MODE_INFRA)
1203 return;
c3701c66 1204
b6871ebb
AN		 1205 if (!wpa_s->hw.modes)
1206 return;
1207
1208 /* only HT caps in 11g mode are relevant */
1209 for (i = 0; i < wpa_s->hw.num_modes; i++) {
1210 hw_mode = &wpa_s->hw.modes[i];
1211 if (hw_mode->mode == HOSTAPD_MODE_IEEE80211G)
1212 break;
1213 }
1214
1215 /* Driver does not support HT40 for 11g or doesn't have 11g. */
1216 if (i == wpa_s->hw.num_modes || !hw_mode ||
1217 !(hw_mode->ht_capab & HT_CAP_INFO_SUPP_CHANNEL_WIDTH_SET))
1218 return;
c3701c66
RM		 1219
1220 if (bss == NULL || bss->freq < 2400 || bss->freq > 2500)
1221 return; /* Not associated on 2.4 GHz band */
1222
1223 /* Check whether AP supports HT40 */
1224 ie = wpa_bss_get_ie(wpa_s->current_bss, WLAN_EID_HT_CAP);
1225 if (!ie || ie[1] < 2 ||
1226 !(WPA_GET_LE16(ie + 2) & HT_CAP_INFO_SUPP_CHANNEL_WIDTH_SET))
1227 return; /* AP does not support HT40 */
1228
1229 ie = wpa_bss_get_ie(wpa_s->current_bss,
1230 WLAN_EID_OVERLAPPING_BSS_SCAN_PARAMS);
1231 if (!ie || ie[1] < 14)
1232 return; /* AP does not request OBSS scans */
1233
1234 wpa_s->sme.obss_scan_int = WPA_GET_LE16(ie + 6);
1235 if (wpa_s->sme.obss_scan_int < 10) {
1236 wpa_printf(MSG_DEBUG, "SME: Invalid OBSS Scan Interval %u "
1237 "replaced with the minimum 10 sec",
1238 wpa_s->sme.obss_scan_int);
1239 wpa_s->sme.obss_scan_int = 10;
1240 }
1241 wpa_printf(MSG_DEBUG, "SME: OBSS Scan Interval %u sec",
1242 wpa_s->sme.obss_scan_int);
1243 eloop_register_timeout(wpa_s->sme.obss_scan_int, 0,
1244 sme_obss_scan_timeout, wpa_s, NULL);
e29853bb
BG		 1245}
1246
1247
7d878ca7
JM		 1248#ifdef CONFIG_IEEE80211W
1249
1250static const unsigned int sa_query_max_timeout = 1000;
1251static const unsigned int sa_query_retry_timeout = 201;
1252
1253static int sme_check_sa_query_timeout(struct wpa_supplicant *wpa_s)
1254{
1255 u32 tu;
46b8d4c0
JB		 1256 struct os_reltime now, passed;
1257 os_get_reltime(&now);
1258 os_reltime_sub(&now, &wpa_s->sme.sa_query_start, &passed);
7d878ca7
JM		 1259 tu = (passed.sec * 1000000 + passed.usec) / 1024;
1260 if (sa_query_max_timeout < tu) {
f049052b 1261 wpa_dbg(wpa_s, MSG_DEBUG, "SME: SA Query timed out");
7d878ca7
JM		 1262 sme_stop_sa_query(wpa_s);
1263 wpa_supplicant_deauthenticate(
1264 wpa_s, WLAN_REASON_PREV_AUTH_NOT_VALID);
1265 return 1;
1266 }
1267
1268 return 0;
1269}
1270
1271
1272static void sme_send_sa_query_req(struct wpa_supplicant *wpa_s,
1273 const u8 *trans_id)
1274{
1275 u8 req[2 + WLAN_SA_QUERY_TR_ID_LEN];
f049052b
BG		 1276 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Sending SA Query Request to "
1277 MACSTR, MAC2STR(wpa_s->bssid));
7d878ca7
JM		 1278 wpa_hexdump(MSG_DEBUG, "SME: SA Query Transaction ID",
1279 trans_id, WLAN_SA_QUERY_TR_ID_LEN);
1280 req[0] = WLAN_ACTION_SA_QUERY;
1281 req[1] = WLAN_SA_QUERY_REQUEST;
1282 os_memcpy(req + 2, trans_id, WLAN_SA_QUERY_TR_ID_LEN);
190b9062 1283 if (wpa_drv_send_action(wpa_s, wpa_s->assoc_freq, 0, wpa_s->bssid,
7d878ca7 1284 wpa_s->own_addr, wpa_s->bssid,
b106173a 1285 req, sizeof(req), 0) < 0)
f049052b
BG		 1286 wpa_msg(wpa_s, MSG_INFO, "SME: Failed to send SA Query "
1287 "Request");
7d878ca7
JM		 1288}
1289
1290
1291static void sme_sa_query_timer(void *eloop_ctx, void *timeout_ctx)
1292{
1293 struct wpa_supplicant *wpa_s = eloop_ctx;
1294 unsigned int timeout, sec, usec;
1295 u8 *trans_id, *nbuf;
1296
1297 if (wpa_s->sme.sa_query_count > 0 &&
1298 sme_check_sa_query_timeout(wpa_s))
1299 return;
1300
067ffa26
JM		 1301 nbuf = os_realloc_array(wpa_s->sme.sa_query_trans_id,
1302 wpa_s->sme.sa_query_count + 1,
1303 WLAN_SA_QUERY_TR_ID_LEN);
7d878ca7
JM		 1304 if (nbuf == NULL)
1305 return;
1306 if (wpa_s->sme.sa_query_count == 0) {
1307 /* Starting a new SA Query procedure */
46b8d4c0 1308 os_get_reltime(&wpa_s->sme.sa_query_start);
7d878ca7
JM		 1309 }
1310 trans_id = nbuf + wpa_s->sme.sa_query_count * WLAN_SA_QUERY_TR_ID_LEN;
1311 wpa_s->sme.sa_query_trans_id = nbuf;
1312 wpa_s->sme.sa_query_count++;
1313
1314 os_get_random(trans_id, WLAN_SA_QUERY_TR_ID_LEN);
1315
1316 timeout = sa_query_retry_timeout;
1317 sec = ((timeout / 1000) * 1024) / 1000;
1318 usec = (timeout % 1000) * 1024;
1319 eloop_register_timeout(sec, usec, sme_sa_query_timer, wpa_s, NULL);
1320
f049052b
BG		 1321 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Association SA Query attempt %d",
1322 wpa_s->sme.sa_query_count);
7d878ca7
JM		 1323
1324 sme_send_sa_query_req(wpa_s, trans_id);
1325}
1326
1327
1328static void sme_start_sa_query(struct wpa_supplicant *wpa_s)
1329{
1330 sme_sa_query_timer(wpa_s, NULL);
1331}
1332
1333
19df9b07 1334static void sme_stop_sa_query(struct wpa_supplicant *wpa_s)
7d878ca7
JM		 1335{
1336 eloop_cancel_timeout(sme_sa_query_timer, wpa_s, NULL);
1337 os_free(wpa_s->sme.sa_query_trans_id);
1338 wpa_s->sme.sa_query_trans_id = NULL;
1339 wpa_s->sme.sa_query_count = 0;
1340}
1341
1342
1343void sme_event_unprot_disconnect(struct wpa_supplicant *wpa_s, const u8 *sa,
1344 const u8 *da, u16 reason_code)
1345{
1346 struct wpa_ssid *ssid;
3302b7c2 1347 struct os_reltime now;
7d878ca7 1348
7d878ca7
JM		 1349 if (wpa_s->wpa_state != WPA_COMPLETED)
1350 return;
1351 ssid = wpa_s->current_ssid;
62d49803
JM		 1352 if (ssid == NULL ||
1353 (ssid->ieee80211w == MGMT_FRAME_PROTECTION_DEFAULT ?
1354 wpa_s->conf->pmf : ssid->ieee80211w) == NO_MGMT_FRAME_PROTECTION)
7d878ca7
JM		 1355 return;
1356 if (os_memcmp(sa, wpa_s->bssid, ETH_ALEN) != 0)
1357 return;
1358 if (reason_code != WLAN_REASON_CLASS2_FRAME_FROM_NONAUTH_STA &&
1359 reason_code != WLAN_REASON_CLASS3_FRAME_FROM_NONASSOC_STA)
1360 return;
1361 if (wpa_s->sme.sa_query_count > 0)
1362 return;
1363
3302b7c2
JM		 1364 os_get_reltime(&now);
1365 if (wpa_s->sme.last_unprot_disconnect.sec &&
1366 !os_reltime_expired(&now, &wpa_s->sme.last_unprot_disconnect, 10))
1367 return; /* limit SA Query procedure frequency */
1368 wpa_s->sme.last_unprot_disconnect = now;
1369
f049052b
BG		 1370 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Unprotected disconnect dropped - "
1371 "possible AP/STA state mismatch - trigger SA Query");
7d878ca7
JM		 1372 sme_start_sa_query(wpa_s);
1373}
1374
1375
1376void sme_sa_query_rx(struct wpa_supplicant *wpa_s, const u8 *sa,
1377 const u8 *data, size_t len)
1378{
1379 int i;
1380
1381 if (wpa_s->sme.sa_query_trans_id == NULL ||
1382 len < 1 + WLAN_SA_QUERY_TR_ID_LEN ||
1383 data[0] != WLAN_SA_QUERY_RESPONSE)
1384 return;
f049052b
BG		 1385 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Received SA Query response from "
1386 MACSTR " (trans_id %02x%02x)", MAC2STR(sa), data[1], data[2]);
7d878ca7
JM		 1387
1388 if (os_memcmp(sa, wpa_s->bssid, ETH_ALEN) != 0)
1389 return;
1390
1391 for (i = 0; i < wpa_s->sme.sa_query_count; i++) {
1392 if (os_memcmp(wpa_s->sme.sa_query_trans_id +
1393 i * WLAN_SA_QUERY_TR_ID_LEN,
1394 data + 1, WLAN_SA_QUERY_TR_ID_LEN) == 0)
1395 break;
1396 }
1397
1398 if (i >= wpa_s->sme.sa_query_count) {
f049052b
BG		 1399 wpa_dbg(wpa_s, MSG_DEBUG, "SME: No matching SA Query "
1400 "transaction identifier found");
7d878ca7
JM		 1401 return;
1402 }
1403
f049052b
BG		 1404 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Reply to pending SA Query received "
1405 "from " MACSTR, MAC2STR(sa));
7d878ca7
JM		 1406 sme_stop_sa_query(wpa_s);
1407}
1408
1409#endif /* CONFIG_IEEE80211W */
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