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tests: WPS UPnP operations
[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;
03e47c9c
JM		 154 u8 ext_capab[10];
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) {
363 wpas_hs20_add_indication(hs20);
364 os_memcpy(wpa_s->sme.assoc_req_ie +
365 wpa_s->sme.assoc_req_ie_len,
366 wpabuf_head(hs20), wpabuf_len(hs20));
367 wpa_s->sme.assoc_req_ie_len += wpabuf_len(hs20);
368 wpabuf_free(hs20);
369 }
370 }
371#endif /* CONFIG_HS20 */
372
03e47c9c
JM		 373 ext_capab_len = wpas_build_ext_capab(wpa_s, ext_capab);
374 if (ext_capab_len > 0) {
92cbcf91
JM		 375 u8 *pos = wpa_s->sme.assoc_req_ie;
376 if (wpa_s->sme.assoc_req_ie_len > 0 && pos[0] == WLAN_EID_RSN)
377 pos += 2 + pos[1];
03e47c9c 378 os_memmove(pos + ext_capab_len, pos,
92cbcf91
JM		 379 wpa_s->sme.assoc_req_ie_len -
380 (pos - wpa_s->sme.assoc_req_ie));
03e47c9c
JM		 381 wpa_s->sme.assoc_req_ie_len += ext_capab_len;
382 os_memcpy(pos, ext_capab, ext_capab_len);
92cbcf91 383 }
92cbcf91 384
c10347f2
JM		 385#ifdef CONFIG_SAE
386 if (params.auth_alg == WPA_AUTH_ALG_SAE) {
387 if (start)
8e31e955
JM		 388 resp = sme_auth_build_sae_commit(wpa_s, ssid,
389 bss->bssid);
c10347f2
JM		 390 else
391 resp = sme_auth_build_sae_confirm(wpa_s);
6ac4b15e
JM		 392 if (resp == NULL) {
393 wpas_connect_work_done(wpa_s);
c10347f2 394 return;
6ac4b15e 395 }
c10347f2
JM		 396 params.sae_data = wpabuf_head(resp);
397 params.sae_data_len = wpabuf_len(resp);
dd43026a 398 wpa_s->sme.sae.state = start ? SAE_COMMITTED : SAE_CONFIRMED;
c10347f2
JM		 399 }
400#endif /* CONFIG_SAE */
401
a4cba8f1 402 wpa_supplicant_cancel_sched_scan(wpa_s);
c2a04078
JM		 403 wpa_supplicant_cancel_scan(wpa_s);
404
f049052b 405 wpa_msg(wpa_s, MSG_INFO, "SME: Trying to authenticate with " MACSTR
c2a04078
JM		 406 " (SSID='%s' freq=%d MHz)", MAC2STR(params.bssid),
407 wpa_ssid_txt(params.ssid, params.ssid_len), params.freq);
408
409 wpa_clear_keys(wpa_s, bss->bssid);
410 wpa_supplicant_set_state(wpa_s, WPA_AUTHENTICATING);
8bac466b 411 old_ssid = wpa_s->current_ssid;
c2a04078
JM		 412 wpa_s->current_ssid = ssid;
413 wpa_supplicant_rsn_supp_set_config(wpa_s, wpa_s->current_ssid);
414 wpa_supplicant_initiate_eapol(wpa_s);
8bac466b
JM		 415 if (old_ssid != wpa_s->current_ssid)
416 wpas_notify_network_changed(wpa_s);
c2a04078 417
62c72d72 418 wpa_s->sme.auth_alg = params.auth_alg;
c2a04078 419 if (wpa_drv_authenticate(wpa_s, &params) < 0) {
f049052b 420 wpa_msg(wpa_s, MSG_INFO, "SME: Authentication request to the "
c2a04078 421 "driver failed");
ed57c590 422 wpas_connection_failed(wpa_s, bss->bssid);
1193dc8f 423 wpa_supplicant_mark_disassoc(wpa_s);
c10347f2 424 wpabuf_free(resp);
6ac4b15e 425 wpas_connect_work_done(wpa_s);
c2a04078
JM		 426 return;
427 }
428
e29853bb
BG		 429 eloop_register_timeout(SME_AUTH_TIMEOUT, 0, sme_auth_timer, wpa_s,
430 NULL);
c2a04078
JM		 431
432 /*
433 * Association will be started based on the authentication event from
434 * the driver.
435 */
c10347f2
JM		 436
437 wpabuf_free(resp);
438}
439
440
6ac4b15e
JM		 441static void sme_auth_start_cb(struct wpa_radio_work *work, int deinit)
442{
443 struct wpa_connect_work *cwork = work->ctx;
444 struct wpa_supplicant *wpa_s = work->wpa_s;
445
446 if (deinit) {
b3253ebb
AO		 447 if (work->started)
448 wpa_s->connect_work = NULL;
449
6ac4b15e
JM		 450 wpas_connect_work_free(cwork);
451 return;
452 }
453
454 wpa_s->connect_work = work;
455
456 if (!wpas_valid_bss_ssid(wpa_s, cwork->bss, cwork->ssid)) {
457 wpa_dbg(wpa_s, MSG_DEBUG, "SME: BSS/SSID entry for authentication not valid anymore - drop connection attempt");
458 wpas_connect_work_done(wpa_s);
459 return;
460 }
461
462 sme_send_authentication(wpa_s, cwork->bss, cwork->ssid, 1);
463}
464
465
c10347f2
JM		 466void sme_authenticate(struct wpa_supplicant *wpa_s,
467 struct wpa_bss *bss, struct wpa_ssid *ssid)
468{
6ac4b15e
JM		 469 struct wpa_connect_work *cwork;
470
471 if (bss == NULL || ssid == NULL)
472 return;
473 if (wpa_s->connect_work) {
474 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Reject sme_authenticate() call since connect_work exist");
475 return;
476 }
477
478 cwork = os_zalloc(sizeof(*cwork));
479 if (cwork == NULL)
480 return;
481 cwork->bss = bss;
482 cwork->ssid = ssid;
483 cwork->sme = 1;
484
98efcc41 485#ifdef CONFIG_SAE
dd43026a 486 wpa_s->sme.sae.state = SAE_NOTHING;
98efcc41 487 wpa_s->sme.sae.send_confirm = 0;
18ca7332 488 wpa_s->sme.sae_group_index = 0;
98efcc41 489#endif /* CONFIG_SAE */
6ac4b15e
JM		 490
491 if (radio_add_work(wpa_s, bss->freq, "sme-connect", 1,
492 sme_auth_start_cb, cwork) < 0)
493 wpas_connect_work_free(cwork);
c2a04078
JM		 494}
495
496
c10347f2 497#ifdef CONFIG_SAE
21af6d15 498
c10347f2
JM		 499static int sme_sae_auth(struct wpa_supplicant *wpa_s, u16 auth_transaction,
500 u16 status_code, const u8 *data, size_t len)
501{
502 wpa_dbg(wpa_s, MSG_DEBUG, "SME: SAE authentication transaction %u "
503 "status code %u", auth_transaction, status_code);
c10347f2 504
d136c376
JM		 505 if (auth_transaction == 1 &&
506 status_code == WLAN_STATUS_ANTI_CLOGGING_TOKEN_REQ &&
507 wpa_s->sme.sae.state == SAE_COMMITTED &&
508 wpa_s->current_bss && wpa_s->current_ssid) {
509 wpa_dbg(wpa_s, MSG_DEBUG, "SME: SAE anti-clogging token "
510 "requested");
511 wpabuf_free(wpa_s->sme.sae_token);
512 wpa_s->sme.sae_token = wpabuf_alloc_copy(data, len);
513 sme_send_authentication(wpa_s, wpa_s->current_bss,
514 wpa_s->current_ssid, 1);
515 return 0;
516 }
517
625f202a
JM		 518 if (auth_transaction == 1 &&
519 status_code == WLAN_STATUS_FINITE_CYCLIC_GROUP_NOT_SUPPORTED &&
520 wpa_s->sme.sae.state == SAE_COMMITTED &&
521 wpa_s->current_bss && wpa_s->current_ssid) {
522 wpa_dbg(wpa_s, MSG_DEBUG, "SME: SAE group not supported");
523 wpa_s->sme.sae_group_index++;
524 if (sme_set_sae_group(wpa_s) < 0)
525 return -1; /* no other groups enabled */
526 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Try next enabled SAE group");
527 sme_send_authentication(wpa_s, wpa_s->current_bss,
528 wpa_s->current_ssid, 1);
529 return 0;
530 }
531
c10347f2
JM		 532 if (status_code != WLAN_STATUS_SUCCESS)
533 return -1;
534
535 if (auth_transaction == 1) {
18ca7332
JM		 536 int *groups = wpa_s->conf->sae_groups;
537
c10347f2
JM		 538 wpa_dbg(wpa_s, MSG_DEBUG, "SME SAE commit");
539 if (wpa_s->current_bss == NULL ||
540 wpa_s->current_ssid == NULL)
541 return -1;
dd43026a 542 if (wpa_s->sme.sae.state != SAE_COMMITTED)
21af6d15 543 return -1;
18ca7332
JM		 544 if (groups && groups[0] <= 0)
545 groups = NULL;
625f202a 546 if (sae_parse_commit(&wpa_s->sme.sae, data, len, NULL, NULL,
18ca7332 547 groups) != WLAN_STATUS_SUCCESS)
21af6d15 548 return -1;
146f6c9a
JM		 549
550 if (sae_process_commit(&wpa_s->sme.sae) < 0) {
551 wpa_printf(MSG_DEBUG, "SAE: Failed to process peer "
552 "commit");
553 return -1;
554 }
555
d136c376
JM		 556 wpabuf_free(wpa_s->sme.sae_token);
557 wpa_s->sme.sae_token = NULL;
c10347f2
JM		 558 sme_send_authentication(wpa_s, wpa_s->current_bss,
559 wpa_s->current_ssid, 0);
560 return 0;
561 } else if (auth_transaction == 2) {
562 wpa_dbg(wpa_s, MSG_DEBUG, "SME SAE confirm");
dd43026a 563 if (wpa_s->sme.sae.state != SAE_CONFIRMED)
21af6d15 564 return -1;
f2e9818f 565 if (sae_check_confirm(&wpa_s->sme.sae, data, len) < 0)
21af6d15 566 return -1;
dd43026a 567 wpa_s->sme.sae.state = SAE_ACCEPTED;
b4fd3613 568 sae_clear_temp_data(&wpa_s->sme.sae);
c10347f2
JM		 569 return 1;
570 }
571
572 return -1;
573}
574#endif /* CONFIG_SAE */
575
576
c2a04078
JM		 577void sme_event_auth(struct wpa_supplicant *wpa_s, union wpa_event_data *data)
578{
c2a04078
JM		 579 struct wpa_ssid *ssid = wpa_s->current_ssid;
580
581 if (ssid == NULL) {
f049052b
BG		 582 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Ignore authentication event "
583 "when network is not selected");
c2a04078
JM		 584 return;
585 }
586
587 if (wpa_s->wpa_state != WPA_AUTHENTICATING) {
f049052b
BG		 588 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Ignore authentication event "
589 "when not in authenticating state");
c2a04078
JM		 590 return;
591 }
592
593 if (os_memcmp(wpa_s->pending_bssid, data->auth.peer, ETH_ALEN) != 0) {
f049052b
BG		 594 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Ignore authentication with "
595 "unexpected peer " MACSTR,
596 MAC2STR(data->auth.peer));
c2a04078
JM		 597 return;
598 }
599
f049052b 600 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Authentication response: peer=" MACSTR
c10347f2 601 " auth_type=%d auth_transaction=%d status_code=%d",
f049052b 602 MAC2STR(data->auth.peer), data->auth.auth_type,
c10347f2 603 data->auth.auth_transaction, data->auth.status_code);
c2a04078
JM		 604 wpa_hexdump(MSG_MSGDUMP, "SME: Authentication response IEs",
605 data->auth.ies, data->auth.ies_len);
606
e29853bb
BG		 607 eloop_cancel_timeout(sme_auth_timer, wpa_s, NULL);
608
c10347f2
JM		 609#ifdef CONFIG_SAE
610 if (data->auth.auth_type == WLAN_AUTH_SAE) {
21af6d15
JM		 611 int res;
612 res = sme_sae_auth(wpa_s, data->auth.auth_transaction,
613 data->auth.status_code, data->auth.ies,
614 data->auth.ies_len);
615 if (res < 0) {
616 wpas_connection_failed(wpa_s, wpa_s->pending_bssid);
617 wpa_supplicant_set_state(wpa_s, WPA_DISCONNECTED);
618
619 }
620 if (res != 1)
c10347f2 621 return;
47b55a3e
JM		 622
623 wpa_printf(MSG_DEBUG, "SME: SAE completed - setting PMK for "
624 "4-way handshake");
625 wpa_sm_set_pmk(wpa_s->wpa, wpa_s->sme.sae.pmk, PMK_LEN);
c10347f2
JM		 626 }
627#endif /* CONFIG_SAE */
628
c2a04078 629 if (data->auth.status_code != WLAN_STATUS_SUCCESS) {
f049052b
BG		 630 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Authentication failed (status "
631 "code %d)", data->auth.status_code);
cb1583f6
SO		 632
633 if (data->auth.status_code !=
634 WLAN_STATUS_NOT_SUPPORTED_AUTH_ALG ||
635 wpa_s->sme.auth_alg == data->auth.auth_type ||
7e6646c7 636 wpa_s->current_ssid->auth_alg == WPA_AUTH_ALG_LEAP) {
0fb337c1 637 wpas_connection_failed(wpa_s, wpa_s->pending_bssid);
c1c02342 638 wpa_supplicant_set_state(wpa_s, WPA_DISCONNECTED);
cb1583f6 639 return;
7e6646c7 640 }
cb1583f6 641
d9504779
JM		 642 wpas_connect_work_done(wpa_s);
643
cb1583f6
SO		 644 switch (data->auth.auth_type) {
645 case WLAN_AUTH_OPEN:
646 wpa_s->current_ssid->auth_alg = WPA_AUTH_ALG_SHARED;
647
f049052b 648 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Trying SHARED auth");
cb1583f6
SO		 649 wpa_supplicant_associate(wpa_s, wpa_s->current_bss,
650 wpa_s->current_ssid);
651 return;
652
653 case WLAN_AUTH_SHARED_KEY:
654 wpa_s->current_ssid->auth_alg = WPA_AUTH_ALG_LEAP;
655
f049052b 656 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Trying LEAP auth");
cb1583f6
SO		 657 wpa_supplicant_associate(wpa_s, wpa_s->current_bss,
658 wpa_s->current_ssid);
659 return;
660
661 default:
662 return;
663 }
c2a04078
JM		 664 }
665
666#ifdef CONFIG_IEEE80211R
667 if (data->auth.auth_type == WLAN_AUTH_FT) {
668 union wpa_event_data edata;
669 os_memset(&edata, 0, sizeof(edata));
670 edata.ft_ies.ies = data->auth.ies;
671 edata.ft_ies.ies_len = data->auth.ies_len;
672 os_memcpy(edata.ft_ies.target_ap, data->auth.peer, ETH_ALEN);
673 wpa_supplicant_event(wpa_s, EVENT_FT_RESPONSE, &edata);
674 }
675#endif /* CONFIG_IEEE80211R */
676
71024cb2
JM		 677 sme_associate(wpa_s, ssid->mode, data->auth.peer,
678 data->auth.auth_type);
679}
680
681
682void sme_associate(struct wpa_supplicant *wpa_s, enum wpas_mode mode,
683 const u8 *bssid, u16 auth_type)
684{
685 struct wpa_driver_associate_params params;
d9a27b04 686 struct ieee802_11_elems elems;
80e8a5ee
BG		 687#ifdef CONFIG_HT_OVERRIDES
688 struct ieee80211_ht_capabilities htcaps;
689 struct ieee80211_ht_capabilities htcaps_mask;
690#endif /* CONFIG_HT_OVERRIDES */
e9ee8dc3
JB		 691#ifdef CONFIG_VHT_OVERRIDES
692 struct ieee80211_vht_capabilities vhtcaps;
693 struct ieee80211_vht_capabilities vhtcaps_mask;
694#endif /* CONFIG_VHT_OVERRIDES */
71024cb2 695
c2a04078 696 os_memset(&params, 0, sizeof(params));
71024cb2 697 params.bssid = bssid;
c2a04078
JM		 698 params.ssid = wpa_s->sme.ssid;
699 params.ssid_len = wpa_s->sme.ssid_len;
700 params.freq = wpa_s->sme.freq;
1f6c0ab8
BS		 701 params.bg_scan_period = wpa_s->current_ssid ?
702 wpa_s->current_ssid->bg_scan_period : -1;
c2a04078
JM		 703 params.wpa_ie = wpa_s->sme.assoc_req_ie_len ?
704 wpa_s->sme.assoc_req_ie : NULL;
705 params.wpa_ie_len = wpa_s->sme.assoc_req_ie_len;
4848a38d
JM		 706 params.pairwise_suite = wpa_s->pairwise_cipher;
707 params.group_suite = wpa_s->group_cipher;
80e8a5ee
BG		 708#ifdef CONFIG_HT_OVERRIDES
709 os_memset(&htcaps, 0, sizeof(htcaps));
710 os_memset(&htcaps_mask, 0, sizeof(htcaps_mask));
711 params.htcaps = (u8 *) &htcaps;
712 params.htcaps_mask = (u8 *) &htcaps_mask;
713 wpa_supplicant_apply_ht_overrides(wpa_s, wpa_s->current_ssid, &params);
714#endif /* CONFIG_HT_OVERRIDES */
e9ee8dc3
JB		 715#ifdef CONFIG_VHT_OVERRIDES
716 os_memset(&vhtcaps, 0, sizeof(vhtcaps));
717 os_memset(&vhtcaps_mask, 0, sizeof(vhtcaps_mask));
718 params.vhtcaps = &vhtcaps;
719 params.vhtcaps_mask = &vhtcaps_mask;
720 wpa_supplicant_apply_vht_overrides(wpa_s, wpa_s->current_ssid, &params);
721#endif /* CONFIG_VHT_OVERRIDES */
c2a04078 722#ifdef CONFIG_IEEE80211R
71024cb2 723 if (auth_type == WLAN_AUTH_FT && wpa_s->sme.ft_ies) {
c2a04078
JM		 724 params.wpa_ie = wpa_s->sme.ft_ies;
725 params.wpa_ie_len = wpa_s->sme.ft_ies_len;
726 }
727#endif /* CONFIG_IEEE80211R */
71024cb2 728 params.mode = mode;
c2a04078 729 params.mgmt_frame_protection = wpa_s->sme.mfp;
62fa124c
JM		 730 if (wpa_s->sme.prev_bssid_set)
731 params.prev_bssid = wpa_s->sme.prev_bssid;
c2a04078
JM		 732
733 wpa_msg(wpa_s, MSG_INFO, "Trying to associate with " MACSTR
734 " (SSID='%s' freq=%d MHz)", MAC2STR(params.bssid),
735 params.ssid ? wpa_ssid_txt(params.ssid, params.ssid_len) : "",
736 params.freq);
737
738 wpa_supplicant_set_state(wpa_s, WPA_ASSOCIATING);
739
9efc3f2a
JM		 740 if (params.wpa_ie == NULL ||
741 ieee802_11_parse_elems(params.wpa_ie, params.wpa_ie_len, &elems, 0)
d9a27b04 742 < 0) {
f049052b 743 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Could not parse own IEs?!");
d9a27b04
JM		 744 os_memset(&elems, 0, sizeof(elems));
745 }
64fa840a
JM		 746 if (elems.rsn_ie) {
747 params.wpa_proto = WPA_PROTO_RSN;
d9a27b04
JM		 748 wpa_sm_set_assoc_wpa_ie(wpa_s->wpa, elems.rsn_ie - 2,
749 elems.rsn_ie_len + 2);
64fa840a
JM		 750 } else if (elems.wpa_ie) {
751 params.wpa_proto = WPA_PROTO_WPA;
d9a27b04
JM		 752 wpa_sm_set_assoc_wpa_ie(wpa_s->wpa, elems.wpa_ie - 2,
753 elems.wpa_ie_len + 2);
64fa840a 754 } else
d9a27b04 755 wpa_sm_set_assoc_wpa_ie(wpa_s->wpa, NULL, 0);
ffad8858 756 if (wpa_s->current_ssid && wpa_s->current_ssid->p2p_group)
6e3f4b89 757 params.p2p = 1;
d9a27b04 758
eea2fd9e
JM		 759 if (wpa_s->parent->set_sta_uapsd)
760 params.uapsd = wpa_s->parent->sta_uapsd;
761 else
762 params.uapsd = -1;
763
c2a04078 764 if (wpa_drv_associate(wpa_s, &params) < 0) {
f049052b
BG		 765 wpa_msg(wpa_s, MSG_INFO, "SME: Association request to the "
766 "driver failed");
e5ad96b7 767 wpas_connection_failed(wpa_s, wpa_s->pending_bssid);
c1c02342 768 wpa_supplicant_set_state(wpa_s, WPA_DISCONNECTED);
e5ad96b7 769 os_memset(wpa_s->pending_bssid, 0, ETH_ALEN);
c2a04078
JM		 770 return;
771 }
772
e29853bb
BG		 773 eloop_register_timeout(SME_ASSOC_TIMEOUT, 0, sme_assoc_timer, wpa_s,
774 NULL);
c2a04078
JM		 775}
776
777
778int sme_update_ft_ies(struct wpa_supplicant *wpa_s, const u8 *md,
779 const u8 *ies, size_t ies_len)
780{
781 if (md == NULL || ies == NULL) {
f049052b 782 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Remove mobility domain");
c2a04078
JM		 783 os_free(wpa_s->sme.ft_ies);
784 wpa_s->sme.ft_ies = NULL;
785 wpa_s->sme.ft_ies_len = 0;
786 wpa_s->sme.ft_used = 0;
787 return 0;
788 }
789
790 os_memcpy(wpa_s->sme.mobility_domain, md, MOBILITY_DOMAIN_ID_LEN);
791 wpa_hexdump(MSG_DEBUG, "SME: FT IEs", ies, ies_len);
792 os_free(wpa_s->sme.ft_ies);
793 wpa_s->sme.ft_ies = os_malloc(ies_len);
794 if (wpa_s->sme.ft_ies == NULL)
795 return -1;
796 os_memcpy(wpa_s->sme.ft_ies, ies, ies_len);
797 wpa_s->sme.ft_ies_len = ies_len;
798 return 0;
799}
efa46078
JM		 800
801
e29853bb 802static void sme_deauth(struct wpa_supplicant *wpa_s)
efa46078 803{
8bac466b
JM		 804 int bssid_changed;
805
8bac466b 806 bssid_changed = !is_zero_ether_addr(wpa_s->bssid);
76d11d3f 807
76d11d3f
JM		 808 if (wpa_drv_deauthenticate(wpa_s, wpa_s->pending_bssid,
809 WLAN_REASON_DEAUTH_LEAVING) < 0) {
f049052b
BG		 810 wpa_msg(wpa_s, MSG_INFO, "SME: Deauth request to the driver "
811 "failed");
76d11d3f 812 }
62fa124c 813 wpa_s->sme.prev_bssid_set = 0;
76d11d3f 814
0fb337c1 815 wpas_connection_failed(wpa_s, wpa_s->pending_bssid);
76d11d3f 816 wpa_supplicant_set_state(wpa_s, WPA_DISCONNECTED);
efa46078
JM		 817 os_memset(wpa_s->bssid, 0, ETH_ALEN);
818 os_memset(wpa_s->pending_bssid, 0, ETH_ALEN);
8bac466b
JM		 819 if (bssid_changed)
820 wpas_notify_bssid_changed(wpa_s);
efa46078 821}
da1fb17c
JM		 822
823
e29853bb
BG		 824void sme_event_assoc_reject(struct wpa_supplicant *wpa_s,
825 union wpa_event_data *data)
826{
827 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Association with " MACSTR " failed: "
828 "status code %d", MAC2STR(wpa_s->pending_bssid),
829 data->assoc_reject.status_code);
830
831 eloop_cancel_timeout(sme_assoc_timer, wpa_s, NULL);
832
833 /*
834 * For now, unconditionally terminate the previous authentication. In
835 * theory, this should not be needed, but mac80211 gets quite confused
836 * if the authentication is left pending.. Some roaming cases might
837 * benefit from using the previous authentication, so this could be
838 * optimized in the future.
839 */
840 sme_deauth(wpa_s);
841}
842
843
da1fb17c
JM		 844void sme_event_auth_timed_out(struct wpa_supplicant *wpa_s,
845 union wpa_event_data *data)
846{
f049052b 847 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Authentication timed out");
0fb337c1 848 wpas_connection_failed(wpa_s, wpa_s->pending_bssid);
1193dc8f 849 wpa_supplicant_mark_disassoc(wpa_s);
da1fb17c
JM		 850}
851
852
853void sme_event_assoc_timed_out(struct wpa_supplicant *wpa_s,
854 union wpa_event_data *data)
855{
f049052b 856 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Association timed out");
0fb337c1 857 wpas_connection_failed(wpa_s, wpa_s->pending_bssid);
da1fb17c 858 wpa_supplicant_mark_disassoc(wpa_s);
da1fb17c 859}
a84ed99e
JM		 860
861
862void sme_event_disassoc(struct wpa_supplicant *wpa_s,
d7df0fa7 863 struct disassoc_info *info)
a84ed99e 864{
f049052b 865 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Disassociation event received");
17fbb751 866 if (wpa_s->sme.prev_bssid_set) {
a84ed99e
JM		 867 /*
868 * cfg80211/mac80211 can get into somewhat confused state if
869 * the AP only disassociates us and leaves us in authenticated
870 * state. For now, force the state to be cleared to avoid
871 * confusing errors if we try to associate with the AP again.
872 */
f049052b
BG		 873 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Deauthenticate to clear "
874 "driver state");
7e26053a 875 wpa_drv_deauthenticate(wpa_s, wpa_s->sme.prev_bssid,
a84ed99e
JM		 876 WLAN_REASON_DEAUTH_LEAVING);
877 }
878}
7d878ca7
JM		 879
880
e29853bb
BG		 881static void sme_auth_timer(void *eloop_ctx, void *timeout_ctx)
882{
883 struct wpa_supplicant *wpa_s = eloop_ctx;
884 if (wpa_s->wpa_state == WPA_AUTHENTICATING) {
885 wpa_msg(wpa_s, MSG_DEBUG, "SME: Authentication timeout");
886 sme_deauth(wpa_s);
887 }
888}
889
890
891static void sme_assoc_timer(void *eloop_ctx, void *timeout_ctx)
892{
893 struct wpa_supplicant *wpa_s = eloop_ctx;
894 if (wpa_s->wpa_state == WPA_ASSOCIATING) {
895 wpa_msg(wpa_s, MSG_DEBUG, "SME: Association timeout");
896 sme_deauth(wpa_s);
897 }
898}
899
900
901void sme_state_changed(struct wpa_supplicant *wpa_s)
902{
903 /* Make sure timers are cleaned up appropriately. */
904 if (wpa_s->wpa_state != WPA_ASSOCIATING)
905 eloop_cancel_timeout(sme_assoc_timer, wpa_s, NULL);
906 if (wpa_s->wpa_state != WPA_AUTHENTICATING)
907 eloop_cancel_timeout(sme_auth_timer, wpa_s, NULL);
908}
909
910
911void sme_disassoc_while_authenticating(struct wpa_supplicant *wpa_s,
912 const u8 *prev_pending_bssid)
913{
914 /*
915 * mac80211-workaround to force deauth on failed auth cmd,
916 * requires us to remain in authenticating state to allow the
917 * second authentication attempt to be continued properly.
918 */
919 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Allow pending authentication "
920 "to proceed after disconnection event");
921 wpa_supplicant_set_state(wpa_s, WPA_AUTHENTICATING);
922 os_memcpy(wpa_s->pending_bssid, prev_pending_bssid, ETH_ALEN);
923
924 /*
925 * Re-arm authentication timer in case auth fails for whatever reason.
926 */
927 eloop_cancel_timeout(sme_auth_timer, wpa_s, NULL);
928 eloop_register_timeout(SME_AUTH_TIMEOUT, 0, sme_auth_timer, wpa_s,
929 NULL);
930}
931
932
933void sme_deinit(struct wpa_supplicant *wpa_s)
934{
935 os_free(wpa_s->sme.ft_ies);
936 wpa_s->sme.ft_ies = NULL;
937 wpa_s->sme.ft_ies_len = 0;
938#ifdef CONFIG_IEEE80211W
939 sme_stop_sa_query(wpa_s);
940#endif /* CONFIG_IEEE80211W */
d136c376
JM		 941#ifdef CONFIG_SAE
942 wpabuf_free(wpa_s->sme.sae_token);
943 wpa_s->sme.sae_token = NULL;
a46d72d7 944 sae_clear_data(&wpa_s->sme.sae);
d136c376 945#endif /* CONFIG_SAE */
e29853bb
BG		 946
947 eloop_cancel_timeout(sme_assoc_timer, wpa_s, NULL);
948 eloop_cancel_timeout(sme_auth_timer, wpa_s, NULL);
c3701c66
RM		 949 eloop_cancel_timeout(sme_obss_scan_timeout, wpa_s, NULL);
950}
951
952
953static void sme_send_2040_bss_coex(struct wpa_supplicant *wpa_s,
954 const u8 *chan_list, u8 num_channels,
955 u8 num_intol)
956{
957 struct ieee80211_2040_bss_coex_ie *bc_ie;
958 struct ieee80211_2040_intol_chan_report *ic_report;
959 struct wpabuf *buf;
960
961 wpa_printf(MSG_DEBUG, "SME: Send 20/40 BSS Coexistence to " MACSTR,
962 MAC2STR(wpa_s->bssid));
963
964 buf = wpabuf_alloc(2 + /* action.category + action_code */
965 sizeof(struct ieee80211_2040_bss_coex_ie) +
966 sizeof(struct ieee80211_2040_intol_chan_report) +
967 num_channels);
968 if (buf == NULL)
969 return;
970
971 wpabuf_put_u8(buf, WLAN_ACTION_PUBLIC);
972 wpabuf_put_u8(buf, WLAN_PA_20_40_BSS_COEX);
973
974 bc_ie = wpabuf_put(buf, sizeof(*bc_ie));
975 bc_ie->element_id = WLAN_EID_20_40_BSS_COEXISTENCE;
976 bc_ie->length = 1;
977 if (num_intol)
978 bc_ie->coex_param |= WLAN_20_40_BSS_COEX_20MHZ_WIDTH_REQ;
979
980 if (num_channels > 0) {
981 ic_report = wpabuf_put(buf, sizeof(*ic_report));
982 ic_report->element_id = WLAN_EID_20_40_BSS_INTOLERANT;
983 ic_report->length = num_channels + 1;
984 ic_report->op_class = 0;
985 os_memcpy(wpabuf_put(buf, num_channels), chan_list,
986 num_channels);
987 }
988
989 if (wpa_drv_send_action(wpa_s, wpa_s->assoc_freq, 0, wpa_s->bssid,
990 wpa_s->own_addr, wpa_s->bssid,
991 wpabuf_head(buf), wpabuf_len(buf), 0) < 0) {
992 wpa_msg(wpa_s, MSG_INFO,
993 "SME: Failed to send 20/40 BSS Coexistence frame");
994 }
995
996 wpabuf_free(buf);
997}
998
999
c3701c66
RM		 1000int sme_proc_obss_scan(struct wpa_supplicant *wpa_s)
1001{
1002 struct wpa_bss *bss;
1003 const u8 *ie;
1004 u16 ht_cap;
1005 u8 chan_list[P2P_MAX_CHANNELS], channel;
1006 u8 num_channels = 0, num_intol = 0, i;
1007
1008 if (!wpa_s->sme.sched_obss_scan)
1009 return 0;
1010
1011 wpa_s->sme.sched_obss_scan = 0;
1012 if (!wpa_s->current_bss || wpa_s->wpa_state != WPA_COMPLETED)
1013 return 1;
1014
1015 /*
1016 * Check whether AP uses regulatory triplet or channel triplet in
1017 * country info. Right now the operating class of the BSS channel
1018 * width trigger event is "unknown" (IEEE Std 802.11-2012 10.15.12),
1019 * based on the assumption that operating class triplet is not used in
1020 * beacon frame. If the First Channel Number/Operating Extension
1021 * Identifier octet has a positive integer value of 201 or greater,
1022 * then its operating class triplet.
1023 *
1024 * TODO: If Supported Operating Classes element is present in beacon
1025 * frame, have to lookup operating class in Annex E and fill them in
1026 * 2040 coex frame.
1027 */
1028 ie = wpa_bss_get_ie(wpa_s->current_bss, WLAN_EID_COUNTRY);
1029 if (ie && (ie[1] >= 6) && (ie[5] >= 201))
1030 return 1;
1031
1032 os_memset(chan_list, 0, sizeof(chan_list));
1033
1034 dl_list_for_each(bss, &wpa_s->bss, struct wpa_bss, list) {
1035 /* Skip other band bss */
e864c0ae
JM		 1036 enum hostapd_hw_mode mode;
1037 mode = ieee80211_freq_to_chan(bss->freq, &channel);
1038 if (mode != HOSTAPD_MODE_IEEE80211G &&
1039 mode != HOSTAPD_MODE_IEEE80211B)
c3701c66
RM		 1040 continue;
1041
1042 ie = wpa_bss_get_ie(bss, WLAN_EID_HT_CAP);
1043 ht_cap = (ie && (ie[1] == 26)) ? WPA_GET_LE16(ie + 2) : 0;
1044
1045 if (!ht_cap || (ht_cap & HT_CAP_INFO_40MHZ_INTOLERANT)) {
1046 /* Check whether the channel is already considered */
1047 for (i = 0; i < num_channels; i++) {
1048 if (channel == chan_list[i])
1049 break;
1050 }
1051 if (i != num_channels)
1052 continue;
1053
1054 if (ht_cap & HT_CAP_INFO_40MHZ_INTOLERANT)
1055 num_intol++;
1056
1057 chan_list[num_channels++] = channel;
1058 }
1059 }
1060
1061 sme_send_2040_bss_coex(wpa_s, chan_list, num_channels, num_intol);
1062 return 1;
1063}
1064
1065
6434ad09
JM		 1066static struct hostapd_hw_modes * get_mode(struct hostapd_hw_modes *modes,
1067 u16 num_modes,
1068 enum hostapd_hw_mode mode)
1069{
1070 u16 i;
1071
1072 for (i = 0; i < num_modes; i++) {
1073 if (modes[i].mode == mode)
1074 return &modes[i];
1075 }
1076
1077 return NULL;
1078}
1079
1080
1081static void wpa_setband_scan_freqs_list(struct wpa_supplicant *wpa_s,
1082 enum hostapd_hw_mode band,
1083 struct wpa_driver_scan_params *params)
1084{
1085 /* Include only supported channels for the specified band */
1086 struct hostapd_hw_modes *mode;
1087 int count, i;
1088
1089 mode = get_mode(wpa_s->hw.modes, wpa_s->hw.num_modes, band);
1090 if (mode == NULL) {
1091 /* No channels supported in this band - use empty list */
1092 params->freqs = os_zalloc(sizeof(int));
1093 return;
1094 }
1095
f9884c09 1096 params->freqs = os_calloc(mode->num_channels + 1, sizeof(int));
6434ad09
JM		 1097 if (params->freqs == NULL)
1098 return;
1099 for (count = 0, i = 0; i < mode->num_channels; i++) {
1100 if (mode->channels[i].flag & HOSTAPD_CHAN_DISABLED)
1101 continue;
1102 params->freqs[count++] = mode->channels[i].freq;
1103 }
1104}
1105
1106
c3701c66
RM		 1107static void sme_obss_scan_timeout(void *eloop_ctx, void *timeout_ctx)
1108{
1109 struct wpa_supplicant *wpa_s = eloop_ctx;
1110 struct wpa_driver_scan_params params;
1111
1112 if (!wpa_s->current_bss) {
1113 wpa_printf(MSG_DEBUG, "SME OBSS: Ignore scan request");
1114 return;
1115 }
1116
1117 os_memset(&params, 0, sizeof(params));
6434ad09 1118 wpa_setband_scan_freqs_list(wpa_s, HOSTAPD_MODE_IEEE80211G, &params);
c3701c66
RM		 1119 wpa_printf(MSG_DEBUG, "SME OBSS: Request an OBSS scan");
1120
1121 if (wpa_supplicant_trigger_scan(wpa_s, &params))
1122 wpa_printf(MSG_DEBUG, "SME OBSS: Failed to trigger scan");
1123 else
1124 wpa_s->sme.sched_obss_scan = 1;
6434ad09 1125 os_free(params.freqs);
c3701c66
RM		 1126
1127 eloop_register_timeout(wpa_s->sme.obss_scan_int, 0,
1128 sme_obss_scan_timeout, wpa_s, NULL);
1129}
1130
1131
1132void sme_sched_obss_scan(struct wpa_supplicant *wpa_s, int enable)
1133{
1134 const u8 *ie;
1135 struct wpa_bss *bss = wpa_s->current_bss;
1136 struct wpa_ssid *ssid = wpa_s->current_ssid;
b6871ebb
AN		 1137 struct hostapd_hw_modes *hw_mode = NULL;
1138 int i;
c3701c66
RM		 1139
1140 eloop_cancel_timeout(sme_obss_scan_timeout, wpa_s, NULL);
1141 wpa_s->sme.sched_obss_scan = 0;
1142 if (!enable)
1143 return;
1144
368b1957
AK		 1145 /*
1146 * Schedule OBSS scan if driver is using station SME in wpa_supplicant
1147 * or it expects OBSS scan to be performed by wpa_supplicant.
1148 */
1149 if (!((wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME) ||
1150 (wpa_s->drv_flags & WPA_DRIVER_FLAGS_OBSS_SCAN)) ||
1151 ssid == NULL || ssid->mode != IEEE80211_MODE_INFRA)
1152 return;
c3701c66 1153
b6871ebb
AN		 1154 if (!wpa_s->hw.modes)
1155 return;
1156
1157 /* only HT caps in 11g mode are relevant */
1158 for (i = 0; i < wpa_s->hw.num_modes; i++) {
1159 hw_mode = &wpa_s->hw.modes[i];
1160 if (hw_mode->mode == HOSTAPD_MODE_IEEE80211G)
1161 break;
1162 }
1163
1164 /* Driver does not support HT40 for 11g or doesn't have 11g. */
1165 if (i == wpa_s->hw.num_modes || !hw_mode ||
1166 !(hw_mode->ht_capab & HT_CAP_INFO_SUPP_CHANNEL_WIDTH_SET))
1167 return;
c3701c66
RM		 1168
1169 if (bss == NULL || bss->freq < 2400 || bss->freq > 2500)
1170 return; /* Not associated on 2.4 GHz band */
1171
1172 /* Check whether AP supports HT40 */
1173 ie = wpa_bss_get_ie(wpa_s->current_bss, WLAN_EID_HT_CAP);
1174 if (!ie || ie[1] < 2 ||
1175 !(WPA_GET_LE16(ie + 2) & HT_CAP_INFO_SUPP_CHANNEL_WIDTH_SET))
1176 return; /* AP does not support HT40 */
1177
1178 ie = wpa_bss_get_ie(wpa_s->current_bss,
1179 WLAN_EID_OVERLAPPING_BSS_SCAN_PARAMS);
1180 if (!ie || ie[1] < 14)
1181 return; /* AP does not request OBSS scans */
1182
1183 wpa_s->sme.obss_scan_int = WPA_GET_LE16(ie + 6);
1184 if (wpa_s->sme.obss_scan_int < 10) {
1185 wpa_printf(MSG_DEBUG, "SME: Invalid OBSS Scan Interval %u "
1186 "replaced with the minimum 10 sec",
1187 wpa_s->sme.obss_scan_int);
1188 wpa_s->sme.obss_scan_int = 10;
1189 }
1190 wpa_printf(MSG_DEBUG, "SME: OBSS Scan Interval %u sec",
1191 wpa_s->sme.obss_scan_int);
1192 eloop_register_timeout(wpa_s->sme.obss_scan_int, 0,
1193 sme_obss_scan_timeout, wpa_s, NULL);
e29853bb
BG		 1194}
1195
1196
7d878ca7
JM		 1197#ifdef CONFIG_IEEE80211W
1198
1199static const unsigned int sa_query_max_timeout = 1000;
1200static const unsigned int sa_query_retry_timeout = 201;
1201
1202static int sme_check_sa_query_timeout(struct wpa_supplicant *wpa_s)
1203{
1204 u32 tu;
46b8d4c0
JB		 1205 struct os_reltime now, passed;
1206 os_get_reltime(&now);
1207 os_reltime_sub(&now, &wpa_s->sme.sa_query_start, &passed);
7d878ca7
JM		 1208 tu = (passed.sec * 1000000 + passed.usec) / 1024;
1209 if (sa_query_max_timeout < tu) {
f049052b 1210 wpa_dbg(wpa_s, MSG_DEBUG, "SME: SA Query timed out");
7d878ca7
JM		 1211 sme_stop_sa_query(wpa_s);
1212 wpa_supplicant_deauthenticate(
1213 wpa_s, WLAN_REASON_PREV_AUTH_NOT_VALID);
1214 return 1;
1215 }
1216
1217 return 0;
1218}
1219
1220
1221static void sme_send_sa_query_req(struct wpa_supplicant *wpa_s,
1222 const u8 *trans_id)
1223{
1224 u8 req[2 + WLAN_SA_QUERY_TR_ID_LEN];
f049052b
BG		 1225 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Sending SA Query Request to "
1226 MACSTR, MAC2STR(wpa_s->bssid));
7d878ca7
JM		 1227 wpa_hexdump(MSG_DEBUG, "SME: SA Query Transaction ID",
1228 trans_id, WLAN_SA_QUERY_TR_ID_LEN);
1229 req[0] = WLAN_ACTION_SA_QUERY;
1230 req[1] = WLAN_SA_QUERY_REQUEST;
1231 os_memcpy(req + 2, trans_id, WLAN_SA_QUERY_TR_ID_LEN);
190b9062 1232 if (wpa_drv_send_action(wpa_s, wpa_s->assoc_freq, 0, wpa_s->bssid,
7d878ca7 1233 wpa_s->own_addr, wpa_s->bssid,
b106173a 1234 req, sizeof(req), 0) < 0)
f049052b
BG		 1235 wpa_msg(wpa_s, MSG_INFO, "SME: Failed to send SA Query "
1236 "Request");
7d878ca7
JM		 1237}
1238
1239
1240static void sme_sa_query_timer(void *eloop_ctx, void *timeout_ctx)
1241{
1242 struct wpa_supplicant *wpa_s = eloop_ctx;
1243 unsigned int timeout, sec, usec;
1244 u8 *trans_id, *nbuf;
1245
1246 if (wpa_s->sme.sa_query_count > 0 &&
1247 sme_check_sa_query_timeout(wpa_s))
1248 return;
1249
067ffa26
JM		 1250 nbuf = os_realloc_array(wpa_s->sme.sa_query_trans_id,
1251 wpa_s->sme.sa_query_count + 1,
1252 WLAN_SA_QUERY_TR_ID_LEN);
7d878ca7
JM		 1253 if (nbuf == NULL)
1254 return;
1255 if (wpa_s->sme.sa_query_count == 0) {
1256 /* Starting a new SA Query procedure */
46b8d4c0 1257 os_get_reltime(&wpa_s->sme.sa_query_start);
7d878ca7
JM		 1258 }
1259 trans_id = nbuf + wpa_s->sme.sa_query_count * WLAN_SA_QUERY_TR_ID_LEN;
1260 wpa_s->sme.sa_query_trans_id = nbuf;
1261 wpa_s->sme.sa_query_count++;
1262
1263 os_get_random(trans_id, WLAN_SA_QUERY_TR_ID_LEN);
1264
1265 timeout = sa_query_retry_timeout;
1266 sec = ((timeout / 1000) * 1024) / 1000;
1267 usec = (timeout % 1000) * 1024;
1268 eloop_register_timeout(sec, usec, sme_sa_query_timer, wpa_s, NULL);
1269
f049052b
BG		 1270 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Association SA Query attempt %d",
1271 wpa_s->sme.sa_query_count);
7d878ca7
JM		 1272
1273 sme_send_sa_query_req(wpa_s, trans_id);
1274}
1275
1276
1277static void sme_start_sa_query(struct wpa_supplicant *wpa_s)
1278{
1279 sme_sa_query_timer(wpa_s, NULL);
1280}
1281
1282
19df9b07 1283static void sme_stop_sa_query(struct wpa_supplicant *wpa_s)
7d878ca7
JM		 1284{
1285 eloop_cancel_timeout(sme_sa_query_timer, wpa_s, NULL);
1286 os_free(wpa_s->sme.sa_query_trans_id);
1287 wpa_s->sme.sa_query_trans_id = NULL;
1288 wpa_s->sme.sa_query_count = 0;
1289}
1290
1291
1292void sme_event_unprot_disconnect(struct wpa_supplicant *wpa_s, const u8 *sa,
1293 const u8 *da, u16 reason_code)
1294{
1295 struct wpa_ssid *ssid;
1296
7d878ca7
JM		 1297 if (wpa_s->wpa_state != WPA_COMPLETED)
1298 return;
1299 ssid = wpa_s->current_ssid;
62d49803
JM		 1300 if (ssid == NULL ||
1301 (ssid->ieee80211w == MGMT_FRAME_PROTECTION_DEFAULT ?
1302 wpa_s->conf->pmf : ssid->ieee80211w) == NO_MGMT_FRAME_PROTECTION)
7d878ca7
JM		 1303 return;
1304 if (os_memcmp(sa, wpa_s->bssid, ETH_ALEN) != 0)
1305 return;
1306 if (reason_code != WLAN_REASON_CLASS2_FRAME_FROM_NONAUTH_STA &&
1307 reason_code != WLAN_REASON_CLASS3_FRAME_FROM_NONASSOC_STA)
1308 return;
1309 if (wpa_s->sme.sa_query_count > 0)
1310 return;
1311
f049052b
BG		 1312 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Unprotected disconnect dropped - "
1313 "possible AP/STA state mismatch - trigger SA Query");
7d878ca7
JM		 1314 sme_start_sa_query(wpa_s);
1315}
1316
1317
1318void sme_sa_query_rx(struct wpa_supplicant *wpa_s, const u8 *sa,
1319 const u8 *data, size_t len)
1320{
1321 int i;
1322
1323 if (wpa_s->sme.sa_query_trans_id == NULL ||
1324 len < 1 + WLAN_SA_QUERY_TR_ID_LEN ||
1325 data[0] != WLAN_SA_QUERY_RESPONSE)
1326 return;
f049052b
BG		 1327 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Received SA Query response from "
1328 MACSTR " (trans_id %02x%02x)", MAC2STR(sa), data[1], data[2]);
7d878ca7
JM		 1329
1330 if (os_memcmp(sa, wpa_s->bssid, ETH_ALEN) != 0)
1331 return;
1332
1333 for (i = 0; i < wpa_s->sme.sa_query_count; i++) {
1334 if (os_memcmp(wpa_s->sme.sa_query_trans_id +
1335 i * WLAN_SA_QUERY_TR_ID_LEN,
1336 data + 1, WLAN_SA_QUERY_TR_ID_LEN) == 0)
1337 break;
1338 }
1339
1340 if (i >= wpa_s->sme.sa_query_count) {
f049052b
BG		 1341 wpa_dbg(wpa_s, MSG_DEBUG, "SME: No matching SA Query "
1342 "transaction identifier found");
7d878ca7
JM		 1343 return;
1344 }
1345
f049052b
BG		 1346 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Reply to pending SA Query received "
1347 "from " MACSTR, MAC2STR(sa));
7d878ca7
JM		 1348 sme_stop_sa_query(wpa_s);
1349}
1350
1351#endif /* CONFIG_IEEE80211W */
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