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SAE: Verify that appropriate Status Code is used in SAE commit (SME)
[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"
f9da7505 15#include "common/ocv.h"
3204795d 16#include "common/hw_features_common.h"
c2a04078 17#include "eapol_supp/eapol_supp_sm.h"
90973fb2 18#include "common/wpa_common.h"
98efcc41 19#include "common/sae.h"
10ec6a5f 20#include "common/dpp.h"
3acb5005
JM		 21#include "rsn_supp/wpa.h"
22#include "rsn_supp/pmksa_cache.h"
c2a04078
JM		 23#include "config.h"
24#include "wpa_supplicant_i.h"
2d5b792d 25#include "driver_i.h"
c2a04078
JM		 26#include "wpas_glue.h"
27#include "wps_supplicant.h"
5f3a6aa0 28#include "p2p_supplicant.h"
8bac466b 29#include "notify.h"
6fa81a3b 30#include "bss.h"
9ba9fa07 31#include "scan.h"
c2a04078 32#include "sme.h"
cb418324 33#include "hs20_supplicant.h"
c2a04078 34
e29853bb
BG		 35#define SME_AUTH_TIMEOUT 5
36#define SME_ASSOC_TIMEOUT 5
37
38static void sme_auth_timer(void *eloop_ctx, void *timeout_ctx);
39static void sme_assoc_timer(void *eloop_ctx, void *timeout_ctx);
c3701c66 40static void sme_obss_scan_timeout(void *eloop_ctx, void *timeout_ctx);
e29853bb 41static void sme_stop_sa_query(struct wpa_supplicant *wpa_s);
e29853bb
BG		 42
43
c10347f2
JM		 44#ifdef CONFIG_SAE
45
625f202a
JM		 46static int index_within_array(const int *array, int idx)
47{
48 int i;
49 for (i = 0; i < idx; i++) {
18ca7332 50 if (array[i] <= 0)
625f202a
JM		 51 return 0;
52 }
53 return 1;
54}
55
56
57static int sme_set_sae_group(struct wpa_supplicant *wpa_s)
58{
59 int *groups = wpa_s->conf->sae_groups;
a9fe1303 60 int default_groups[] = { 19, 20, 21, 0 };
625f202a 61
18ca7332 62 if (!groups || groups[0] <= 0)
625f202a
JM		 63 groups = default_groups;
64
65 /* Configuration may have changed, so validate current index */
66 if (!index_within_array(groups, wpa_s->sme.sae_group_index))
67 return -1;
68
69 for (;;) {
70 int group = groups[wpa_s->sme.sae_group_index];
04e6c4cc 71 if (group <= 0)
625f202a
JM		 72 break;
73 if (sae_set_group(&wpa_s->sme.sae, group) == 0) {
74 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Selected SAE group %d",
75 wpa_s->sme.sae.group);
3d1d4691 76 return 0;
625f202a
JM		 77 }
78 wpa_s->sme.sae_group_index++;
79 }
80
81 return -1;
82}
83
84
8e31e955
JM		 85static struct wpabuf * sme_auth_build_sae_commit(struct wpa_supplicant *wpa_s,
86 struct wpa_ssid *ssid,
fd830891 87 const u8 *bssid, int external,
cfe1ea5c 88 int reuse, int *ret_use_pt)
c10347f2
JM		 89{
90 struct wpabuf *buf;
d136c376 91 size_t len;
a34ca59e 92 const char *password;
cfe1ea5c
JM		 93 struct wpa_bss *bss;
94 int use_pt = 0;
95
96 if (ret_use_pt)
97 *ret_use_pt = 0;
c10347f2 98
a0f19e9c
JM		 99#ifdef CONFIG_TESTING_OPTIONS
100 if (wpa_s->sae_commit_override) {
101 wpa_printf(MSG_DEBUG, "SAE: TESTING - commit override");
102 buf = wpabuf_alloc(4 + wpabuf_len(wpa_s->sae_commit_override));
103 if (!buf)
104 return NULL;
be609c6f
JM		 105 if (!external) {
106 wpabuf_put_le16(buf, 1); /* Transaction seq# */
107 wpabuf_put_le16(buf, WLAN_STATUS_SUCCESS);
108 }
a0f19e9c
JM		 109 wpabuf_put_buf(buf, wpa_s->sae_commit_override);
110 return buf;
111 }
112#endif /* CONFIG_TESTING_OPTIONS */
113
a34ca59e
JM		 114 password = ssid->sae_password;
115 if (!password)
116 password = ssid->passphrase;
117 if (!password) {
8e31e955
JM		 118 wpa_printf(MSG_DEBUG, "SAE: No password available");
119 return NULL;
120 }
121
fd830891
JM		 122 if (reuse && wpa_s->sme.sae.tmp &&
123 os_memcmp(bssid, wpa_s->sme.sae.tmp->bssid, ETH_ALEN) == 0) {
124 wpa_printf(MSG_DEBUG,
125 "SAE: Reuse previously generated PWE on a retry with the same AP");
cfe1ea5c 126 use_pt = wpa_s->sme.sae.tmp->h2e;
fd830891
JM		 127 goto reuse_data;
128 }
625f202a
JM		 129 if (sme_set_sae_group(wpa_s) < 0) {
130 wpa_printf(MSG_DEBUG, "SAE: Failed to select group");
a46d72d7 131 return NULL;
625f202a 132 }
a46d72d7 133
e36a5894
JM		 134 if (ssid->sae_password_id)
135 use_pt = 1;
136
137 if (use_pt || wpa_s->conf->sae_pwe == 1 || wpa_s->conf->sae_pwe == 2) {
cfe1ea5c
JM		 138 bss = wpa_bss_get_bssid_latest(wpa_s, bssid);
139 if (bss) {
140 const u8 *rsnxe;
141
142 rsnxe = wpa_bss_get_ie(bss, WLAN_EID_RSNX);
143 if (rsnxe && rsnxe[1] >= 1)
144 use_pt = !!(rsnxe[2] &
145 BIT(WLAN_RSNX_CAPAB_SAE_H2E));
146 }
147
e36a5894
JM		 148 if ((wpa_s->conf->sae_pwe == 1 || ssid->sae_password_id) &&
149 !use_pt) {
cfe1ea5c
JM		 150 wpa_printf(MSG_DEBUG,
151 "SAE: Cannot use H2E with the selected AP");
152 return NULL;
153 }
154 }
155
156 if (use_pt &&
157 sae_prepare_commit_pt(&wpa_s->sme.sae, ssid->pt,
158 wpa_s->own_addr, bssid,
159 wpa_s->sme.sae_rejected_groups) < 0)
160 return NULL;
161 if (!use_pt &&
162 sae_prepare_commit(wpa_s->own_addr, bssid,
a34ca59e 163 (u8 *) password, os_strlen(password),
9be19d0b 164 ssid->sae_password_id,
8e31e955
JM		 165 &wpa_s->sme.sae) < 0) {
166 wpa_printf(MSG_DEBUG, "SAE: Could not pick PWE");
167 return NULL;
168 }
fd830891
JM		 169 if (wpa_s->sme.sae.tmp)
170 os_memcpy(wpa_s->sme.sae.tmp->bssid, bssid, ETH_ALEN);
8e31e955 171
fd830891 172reuse_data:
5e32fb01 173 len = wpa_s->sme.sae_token ? 3 + wpabuf_len(wpa_s->sme.sae_token) : 0;
9be19d0b
JM		 174 if (ssid->sae_password_id)
175 len += 4 + os_strlen(ssid->sae_password_id);
d136c376 176 buf = wpabuf_alloc(4 + SAE_COMMIT_MAX_LEN + len);
c10347f2
JM		 177 if (buf == NULL)
178 return NULL;
5ff39c13
SD		 179 if (!external) {
180 wpabuf_put_le16(buf, 1); /* Transaction seq# */
cfe1ea5c
JM		 181 wpabuf_put_le16(buf, use_pt ? WLAN_STATUS_SAE_HASH_TO_ELEMENT :
182 WLAN_STATUS_SUCCESS);
5ff39c13 183 }
9be19d0b
JM		 184 sae_write_commit(&wpa_s->sme.sae, buf, wpa_s->sme.sae_token,
185 ssid->sae_password_id);
cfe1ea5c
JM		 186 if (ret_use_pt)
187 *ret_use_pt = use_pt;
c10347f2
JM		 188
189 return buf;
190}
191
192
5ff39c13
SD		 193static struct wpabuf * sme_auth_build_sae_confirm(struct wpa_supplicant *wpa_s,
194 int external)
c10347f2
JM		 195{
196 struct wpabuf *buf;
197
fb8fcc29 198 buf = wpabuf_alloc(4 + SAE_CONFIRM_MAX_LEN);
c10347f2
JM		 199 if (buf == NULL)
200 return NULL;
201
5ff39c13
SD		 202 if (!external) {
203 wpabuf_put_le16(buf, 2); /* Transaction seq# */
204 wpabuf_put_le16(buf, WLAN_STATUS_SUCCESS);
205 }
fb8fcc29 206 sae_write_confirm(&wpa_s->sme.sae, buf);
c10347f2
JM		 207
208 return buf;
209}
210
211#endif /* CONFIG_SAE */
212
213
b361d580
AK		 214/**
215 * sme_auth_handle_rrm - Handle RRM aspects of current authentication attempt
216 * @wpa_s: Pointer to wpa_supplicant data
217 * @bss: Pointer to the bss which is the target of authentication attempt
218 */
219static void sme_auth_handle_rrm(struct wpa_supplicant *wpa_s,
220 struct wpa_bss *bss)
221{
222 const u8 rrm_ie_len = 5;
223 u8 *pos;
224 const u8 *rrm_ie;
225
226 wpa_s->rrm.rrm_used = 0;
227
228 wpa_printf(MSG_DEBUG,
229 "RRM: Determining whether RRM can be used - device support: 0x%x",
230 wpa_s->drv_rrm_flags);
231
232 rrm_ie = wpa_bss_get_ie(bss, WLAN_EID_RRM_ENABLED_CAPABILITIES);
233 if (!rrm_ie || !(bss->caps & IEEE80211_CAP_RRM)) {
234 wpa_printf(MSG_DEBUG, "RRM: No RRM in network");
235 return;
236 }
237
00ed0aa2
BL		 238 if (!((wpa_s->drv_rrm_flags &
239 WPA_DRIVER_FLAGS_DS_PARAM_SET_IE_IN_PROBES) &&
240 (wpa_s->drv_rrm_flags & WPA_DRIVER_FLAGS_QUIET)) &&
241 !(wpa_s->drv_rrm_flags & WPA_DRIVER_FLAGS_SUPPORT_RRM)) {
b361d580
AK		 242 wpa_printf(MSG_DEBUG,
243 "RRM: Insufficient RRM support in driver - do not use RRM");
244 return;
245 }
246
849367af
JM		 247 if (sizeof(wpa_s->sme.assoc_req_ie) <
248 wpa_s->sme.assoc_req_ie_len + rrm_ie_len + 2) {
b361d580
AK		 249 wpa_printf(MSG_INFO,
250 "RRM: Unable to use RRM, no room for RRM IE");
251 return;
252 }
253
254 wpa_printf(MSG_DEBUG, "RRM: Adding RRM IE to Association Request");
255 pos = wpa_s->sme.assoc_req_ie + wpa_s->sme.assoc_req_ie_len;
b361d580
AK		 256 os_memset(pos, 0, 2 + rrm_ie_len);
257 *pos++ = WLAN_EID_RRM_ENABLED_CAPABILITIES;
258 *pos++ = rrm_ie_len;
70d1e728
AO		 259
260 /* Set supported capabilites flags */
261 if (wpa_s->drv_rrm_flags & WPA_DRIVER_FLAGS_TX_POWER_INSERTION)
262 *pos |= WLAN_RRM_CAPS_LINK_MEASUREMENT;
263
d7342014
JM		 264 *pos |= WLAN_RRM_CAPS_BEACON_REPORT_PASSIVE |
265 WLAN_RRM_CAPS_BEACON_REPORT_ACTIVE |
266 WLAN_RRM_CAPS_BEACON_REPORT_TABLE;
76196ddb 267
4a742011
DS		 268 if (wpa_s->lci)
269 pos[1] |= WLAN_RRM_CAPS_LCI_MEASUREMENT;
270
b361d580
AK		 271 wpa_s->sme.assoc_req_ie_len += rrm_ie_len + 2;
272 wpa_s->rrm.rrm_used = 1;
273}
274
275
215ae884
JM		 276static void sme_send_authentication(struct wpa_supplicant *wpa_s,
277 struct wpa_bss *bss, struct wpa_ssid *ssid,
278 int start)
c2a04078
JM		 279{
280 struct wpa_driver_auth_params params;
8bac466b 281 struct wpa_ssid *old_ssid;
fdbe50ed 282#ifdef CONFIG_IEEE80211R
c2a04078 283 const u8 *ie;
fdbe50ed 284#endif /* CONFIG_IEEE80211R */
af3e362f 285#if defined(CONFIG_IEEE80211R) || defined(CONFIG_FILS)
c2a04078 286 const u8 *md = NULL;
af3e362f 287#endif /* CONFIG_IEEE80211R || CONFIG_FILS */
8bac466b 288 int i, bssid_changed;
c10347f2 289 struct wpabuf *resp = NULL;
0bbaa9b9 290 u8 ext_capab[18];
03e47c9c 291 int ext_capab_len;
59b416c7 292 int skip_auth;
170244a1
IP		 293 u8 *wpa_ie;
294 size_t wpa_ie_len;
077232f6
BL		 295#ifdef CONFIG_MBO
296 const u8 *mbo_ie;
297#endif /* CONFIG_MBO */
c2a04078
JM		 298
299 if (bss == NULL) {
f049052b
BG		 300 wpa_msg(wpa_s, MSG_ERROR, "SME: No scan result available for "
301 "the network");
6ac4b15e 302 wpas_connect_work_done(wpa_s);
c2a04078
JM		 303 return;
304 }
305
59b416c7
JM		 306 skip_auth = wpa_s->conf->reassoc_same_bss_optim &&
307 wpa_s->reassoc_same_bss;
8f770587
JM		 308 wpa_s->current_bss = bss;
309
c2a04078
JM		 310 os_memset(&params, 0, sizeof(params));
311 wpa_s->reassociate = 0;
312
313 params.freq = bss->freq;
314 params.bssid = bss->bssid;
6fa81a3b
JM		 315 params.ssid = bss->ssid;
316 params.ssid_len = bss->ssid_len;
2f4f73b1 317 params.p2p = ssid->p2p_group;
c2a04078 318
62fa124c
JM		 319 if (wpa_s->sme.ssid_len != params.ssid_len ||
320 os_memcmp(wpa_s->sme.ssid, params.ssid, params.ssid_len) != 0)
321 wpa_s->sme.prev_bssid_set = 0;
322
c2a04078
JM		 323 wpa_s->sme.freq = params.freq;
324 os_memcpy(wpa_s->sme.ssid, params.ssid, params.ssid_len);
325 wpa_s->sme.ssid_len = params.ssid_len;
326
abd9fafa 327 params.auth_alg = WPA_AUTH_ALG_OPEN;
c2a04078
JM		 328#ifdef IEEE8021X_EAPOL
329 if (ssid->key_mgmt & WPA_KEY_MGMT_IEEE8021X_NO_WPA) {
330 if (ssid->leap) {
331 if (ssid->non_leap == 0)
abd9fafa 332 params.auth_alg = WPA_AUTH_ALG_LEAP;
c2a04078 333 else
abd9fafa 334 params.auth_alg |= WPA_AUTH_ALG_LEAP;
c2a04078
JM		 335 }
336 }
337#endif /* IEEE8021X_EAPOL */
f049052b
BG		 338 wpa_dbg(wpa_s, MSG_DEBUG, "Automatic auth_alg selection: 0x%x",
339 params.auth_alg);
c2a04078 340 if (ssid->auth_alg) {
abd9fafa 341 params.auth_alg = ssid->auth_alg;
f049052b
BG		 342 wpa_dbg(wpa_s, MSG_DEBUG, "Overriding auth_alg selection: "
343 "0x%x", params.auth_alg);
c2a04078 344 }
c10347f2 345#ifdef CONFIG_SAE
bc26ac50 346 wpa_s->sme.sae_pmksa_caching = 0;
c10347f2
JM		 347 if (wpa_key_mgmt_sae(ssid->key_mgmt)) {
348 const u8 *rsn;
349 struct wpa_ie_data ied;
350
351 rsn = wpa_bss_get_ie(bss, WLAN_EID_RSN);
267ac3bc
JM		 352 if (!rsn) {
353 wpa_dbg(wpa_s, MSG_DEBUG,
354 "SAE enabled, but target BSS does not advertise RSN");
dd6c5980
JM		 355#ifdef CONFIG_DPP
356 } else if (wpa_parse_wpa_ie(rsn, 2 + rsn[1], &ied) == 0 &&
357 (ssid->key_mgmt & WPA_KEY_MGMT_DPP) &&
358 (ied.key_mgmt & WPA_KEY_MGMT_DPP)) {
359 wpa_dbg(wpa_s, MSG_DEBUG, "Prefer DPP over SAE when both are enabled");
360#endif /* CONFIG_DPP */
267ac3bc
JM		 361 } else if (wpa_parse_wpa_ie(rsn, 2 + rsn[1], &ied) == 0 &&
362 wpa_key_mgmt_sae(ied.key_mgmt)) {
363 wpa_dbg(wpa_s, MSG_DEBUG, "Using SAE auth_alg");
364 params.auth_alg = WPA_AUTH_ALG_SAE;
365 } else {
366 wpa_dbg(wpa_s, MSG_DEBUG,
367 "SAE enabled, but target BSS does not advertise SAE AKM for RSN");
c10347f2
JM		 368 }
369 }
370#endif /* CONFIG_SAE */
c2a04078 371
a0b2f99b
JM		 372 for (i = 0; i < NUM_WEP_KEYS; i++) {
373 if (ssid->wep_key_len[i])
374 params.wep_key[i] = ssid->wep_key[i];
375 params.wep_key_len[i] = ssid->wep_key_len[i];
376 }
377 params.wep_tx_keyidx = ssid->wep_tx_keyidx;
378
f337f0e9
JM		 379 if ((wpa_bss_get_vendor_ie(bss, WPA_IE_VENDOR_TYPE) ||
380 wpa_bss_get_ie(bss, WLAN_EID_RSN)) &&
0bf927a0 381 wpa_key_mgmt_wpa(ssid->key_mgmt)) {
c2a04078 382 int try_opportunistic;
869af307
JM		 383 const u8 *cache_id = NULL;
384
6e202021
JM		 385 try_opportunistic = (ssid->proactive_key_caching < 0 ?
386 wpa_s->conf->okc :
387 ssid->proactive_key_caching) &&
c2a04078 388 (ssid->proto & WPA_PROTO_RSN);
869af307
JM		 389#ifdef CONFIG_FILS
390 if (wpa_key_mgmt_fils(ssid->key_mgmt))
391 cache_id = wpa_bss_get_fils_cache_id(bss);
392#endif /* CONFIG_FILS */
c2a04078
JM		 393 if (pmksa_cache_set_current(wpa_s->wpa, NULL, bss->bssid,
394 wpa_s->current_ssid,
852b2f27
JM		 395 try_opportunistic, cache_id,
396 0) == 0)
ba422613 397 eapol_sm_notify_pmkid_attempt(wpa_s->eapol);
c2a04078
JM		 398 wpa_s->sme.assoc_req_ie_len = sizeof(wpa_s->sme.assoc_req_ie);
399 if (wpa_supplicant_set_suites(wpa_s, bss, ssid,
400 wpa_s->sme.assoc_req_ie,
401 &wpa_s->sme.assoc_req_ie_len)) {
f049052b
BG		 402 wpa_msg(wpa_s, MSG_WARNING, "SME: Failed to set WPA "
403 "key management and encryption suites");
6ac4b15e 404 wpas_connect_work_done(wpa_s);
c2a04078
JM		 405 return;
406 }
dc673aec
JM		 407#ifdef CONFIG_HS20
408 } else if (wpa_bss_get_vendor_ie(bss, OSEN_IE_VENDOR_TYPE) &&
409 (ssid->key_mgmt & WPA_KEY_MGMT_OSEN)) {
410 /* No PMKSA caching, but otherwise similar to RSN/WPA */
411 wpa_s->sme.assoc_req_ie_len = sizeof(wpa_s->sme.assoc_req_ie);
412 if (wpa_supplicant_set_suites(wpa_s, bss, ssid,
413 wpa_s->sme.assoc_req_ie,
414 &wpa_s->sme.assoc_req_ie_len)) {
415 wpa_msg(wpa_s, MSG_WARNING, "SME: Failed to set WPA "
416 "key management and encryption suites");
417 wpas_connect_work_done(wpa_s);
418 return;
419 }
420#endif /* CONFIG_HS20 */
a3f7e518
JM		 421 } else if ((ssid->key_mgmt & WPA_KEY_MGMT_IEEE8021X_NO_WPA) &&
422 wpa_key_mgmt_wpa_ieee8021x(ssid->key_mgmt)) {
423 /*
424 * Both WPA and non-WPA IEEE 802.1X enabled in configuration -
425 * use non-WPA since the scan results did not indicate that the
426 * AP is using WPA or WPA2.
427 */
428 wpa_supplicant_set_non_wpa_policy(wpa_s, ssid);
429 wpa_s->sme.assoc_req_ie_len = 0;
0bf927a0 430 } else if (wpa_key_mgmt_wpa_any(ssid->key_mgmt)) {
c2a04078
JM		 431 wpa_s->sme.assoc_req_ie_len = sizeof(wpa_s->sme.assoc_req_ie);
432 if (wpa_supplicant_set_suites(wpa_s, NULL, ssid,
433 wpa_s->sme.assoc_req_ie,
434 &wpa_s->sme.assoc_req_ie_len)) {
f049052b
BG		 435 wpa_msg(wpa_s, MSG_WARNING, "SME: Failed to set WPA "
436 "key management and encryption suites (no "
437 "scan results)");
6ac4b15e 438 wpas_connect_work_done(wpa_s);
c2a04078
JM		 439 return;
440 }
441#ifdef CONFIG_WPS
442 } else if (ssid->key_mgmt & WPA_KEY_MGMT_WPS) {
443 struct wpabuf *wps_ie;
444 wps_ie = wps_build_assoc_req_ie(wpas_wps_get_req_type(ssid));
445 if (wps_ie && wpabuf_len(wps_ie) <=
446 sizeof(wpa_s->sme.assoc_req_ie)) {
447 wpa_s->sme.assoc_req_ie_len = wpabuf_len(wps_ie);
448 os_memcpy(wpa_s->sme.assoc_req_ie, wpabuf_head(wps_ie),
449 wpa_s->sme.assoc_req_ie_len);
450 } else
451 wpa_s->sme.assoc_req_ie_len = 0;
452 wpabuf_free(wps_ie);
453 wpa_supplicant_set_non_wpa_policy(wpa_s, ssid);
454#endif /* CONFIG_WPS */
455 } else {
456 wpa_supplicant_set_non_wpa_policy(wpa_s, ssid);
457 wpa_s->sme.assoc_req_ie_len = 0;
458 }
459
170244a1
IP		 460 /* In case the WPA vendor IE is used, it should be placed after all the
461 * non-vendor IEs, as the lower layer expects the IEs to be ordered as
462 * defined in the standard. Store the WPA IE so it can later be
463 * inserted at the correct location.
464 */
465 wpa_ie = NULL;
466 wpa_ie_len = 0;
467 if (wpa_s->wpa_proto == WPA_PROTO_WPA) {
468 wpa_ie = os_memdup(wpa_s->sme.assoc_req_ie,
469 wpa_s->sme.assoc_req_ie_len);
470 if (wpa_ie) {
471 wpa_dbg(wpa_s, MSG_DEBUG, "WPA: Storing WPA IE");
472
473 wpa_ie_len = wpa_s->sme.assoc_req_ie_len;
474 wpa_s->sme.assoc_req_ie_len = 0;
475 } else {
476 wpa_msg(wpa_s, MSG_WARNING, "WPA: Failed copy WPA IE");
477 wpas_connect_work_done(wpa_s);
478 return;
479 }
480 }
481
c2a04078 482#ifdef CONFIG_IEEE80211R
6fa81a3b 483 ie = wpa_bss_get_ie(bss, WLAN_EID_MOBILITY_DOMAIN);
c2a04078
JM		 484 if (ie && ie[1] >= MOBILITY_DOMAIN_ID_LEN)
485 md = ie + 2;
e7846b68 486 wpa_sm_set_ft_params(wpa_s->wpa, ie, ie ? 2 + ie[1] : 0);
322d328e
JM		 487 if (md && (!wpa_key_mgmt_ft(ssid->key_mgmt) ||
488 !wpa_key_mgmt_ft(wpa_s->key_mgmt)))
489 md = NULL;
c2a04078
JM		 490 if (md) {
491 /* Prepare for the next transition */
76b7981d 492 wpa_ft_prepare_auth_request(wpa_s->wpa, ie);
c2a04078
JM		 493 }
494
af3e362f
JM		 495 if (md) {
496 wpa_dbg(wpa_s, MSG_DEBUG, "SME: FT mobility domain %02x%02x",
497 md[0], md[1]);
498
c2a04078
JM		 499 if (wpa_s->sme.assoc_req_ie_len + 5 <
500 sizeof(wpa_s->sme.assoc_req_ie)) {
501 struct rsn_mdie *mdie;
502 u8 *pos = wpa_s->sme.assoc_req_ie +
503 wpa_s->sme.assoc_req_ie_len;
504 *pos++ = WLAN_EID_MOBILITY_DOMAIN;
505 *pos++ = sizeof(*mdie);
506 mdie = (struct rsn_mdie *) pos;
507 os_memcpy(mdie->mobility_domain, md,
508 MOBILITY_DOMAIN_ID_LEN);
f4ec630d 509 mdie->ft_capab = md[MOBILITY_DOMAIN_ID_LEN];
c2a04078
JM		 510 wpa_s->sme.assoc_req_ie_len += 5;
511 }
512
f808bd59 513 if (wpa_s->sme.prev_bssid_set && wpa_s->sme.ft_used &&
0d7b4409
JM		 514 os_memcmp(md, wpa_s->sme.mobility_domain, 2) == 0 &&
515 wpa_sm_has_ptk(wpa_s->wpa)) {
f049052b
BG		 516 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Trying to use FT "
517 "over-the-air");
abd9fafa 518 params.auth_alg = WPA_AUTH_ALG_FT;
c2a04078
JM		 519 params.ie = wpa_s->sme.ft_ies;
520 params.ie_len = wpa_s->sme.ft_ies_len;
521 }
522 }
523#endif /* CONFIG_IEEE80211R */
524
3f56a2b7 525 wpa_s->sme.mfp = wpas_get_ssid_pmf(wpa_s, ssid);
62d49803 526 if (wpa_s->sme.mfp != NO_MGMT_FRAME_PROTECTION) {
6fa81a3b 527 const u8 *rsn = wpa_bss_get_ie(bss, WLAN_EID_RSN);
c2a04078
JM		 528 struct wpa_ie_data _ie;
529 if (rsn && wpa_parse_wpa_ie(rsn, 2 + rsn[1], &_ie) == 0 &&
530 _ie.capabilities &
531 (WPA_CAPABILITY_MFPC | WPA_CAPABILITY_MFPR)) {
f049052b
BG		 532 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Selected AP supports "
533 "MFP: require MFP");
c2a04078
JM		 534 wpa_s->sme.mfp = MGMT_FRAME_PROTECTION_REQUIRED;
535 }
536 }
c2a04078 537
5f3a6aa0
JM		 538#ifdef CONFIG_P2P
539 if (wpa_s->global->p2p) {
540 u8 *pos;
541 size_t len;
542 int res;
5f3a6aa0
JM		 543 pos = wpa_s->sme.assoc_req_ie + wpa_s->sme.assoc_req_ie_len;
544 len = sizeof(wpa_s->sme.assoc_req_ie) -
545 wpa_s->sme.assoc_req_ie_len;
ffad8858
JM		 546 res = wpas_p2p_assoc_req_ie(wpa_s, bss, pos, len,
547 ssid->p2p_group);
5f3a6aa0
JM		 548 if (res >= 0)
549 wpa_s->sme.assoc_req_ie_len += res;
550 }
551#endif /* CONFIG_P2P */
552
b36a3a65
AN		 553#ifdef CONFIG_FST
554 if (wpa_s->fst_ies) {
555 int fst_ies_len = wpabuf_len(wpa_s->fst_ies);
556
557 if (wpa_s->sme.assoc_req_ie_len + fst_ies_len <=
558 sizeof(wpa_s->sme.assoc_req_ie)) {
559 os_memcpy(wpa_s->sme.assoc_req_ie +
560 wpa_s->sme.assoc_req_ie_len,
561 wpabuf_head(wpa_s->fst_ies),
562 fst_ies_len);
563 wpa_s->sme.assoc_req_ie_len += fst_ies_len;
564 }
565 }
566#endif /* CONFIG_FST */
567
a0c38e5d
AS		 568 sme_auth_handle_rrm(wpa_s, bss);
569
065c029a 570 wpa_s->sme.assoc_req_ie_len += wpas_supp_op_class_ie(
cb828507 571 wpa_s, ssid, bss->freq,
065c029a 572 wpa_s->sme.assoc_req_ie + wpa_s->sme.assoc_req_ie_len,
573 sizeof(wpa_s->sme.assoc_req_ie) - wpa_s->sme.assoc_req_ie_len);
5e57ba25 574
cc9a2575
KV		 575 if (params.p2p)
576 wpa_drv_get_ext_capa(wpa_s, WPA_IF_P2P_CLIENT);
577 else
578 wpa_drv_get_ext_capa(wpa_s, WPA_IF_STATION);
579
0bbaa9b9
JM		 580 ext_capab_len = wpas_build_ext_capab(wpa_s, ext_capab,
581 sizeof(ext_capab));
03e47c9c 582 if (ext_capab_len > 0) {
92cbcf91
JM		 583 u8 *pos = wpa_s->sme.assoc_req_ie;
584 if (wpa_s->sme.assoc_req_ie_len > 0 && pos[0] == WLAN_EID_RSN)
585 pos += 2 + pos[1];
03e47c9c 586 os_memmove(pos + ext_capab_len, pos,
92cbcf91
JM		 587 wpa_s->sme.assoc_req_ie_len -
588 (pos - wpa_s->sme.assoc_req_ie));
03e47c9c
JM		 589 wpa_s->sme.assoc_req_ie_len += ext_capab_len;
590 os_memcpy(pos, ext_capab, ext_capab_len);
92cbcf91 591 }
92cbcf91 592
13256553
JM		 593#ifdef CONFIG_TESTING_OPTIONS
594 if (wpa_s->rsnxe_override_assoc &&
595 wpabuf_len(wpa_s->rsnxe_override_assoc) <=
596 sizeof(wpa_s->sme.assoc_req_ie) - wpa_s->sme.assoc_req_ie_len) {
597 wpa_printf(MSG_DEBUG, "TESTING: RSNXE AssocReq override");
598 os_memcpy(wpa_s->sme.assoc_req_ie + wpa_s->sme.assoc_req_ie_len,
599 wpabuf_head(wpa_s->rsnxe_override_assoc),
600 wpabuf_len(wpa_s->rsnxe_override_assoc));
601 wpa_s->sme.assoc_req_ie_len +=
602 wpabuf_len(wpa_s->rsnxe_override_assoc);
603 } else
604#endif /* CONFIG_TESTING_OPTIONS */
6d6c8877
JM		 605 if (wpa_s->rsnxe_len > 0 &&
606 wpa_s->rsnxe_len <=
607 sizeof(wpa_s->sme.assoc_req_ie) - wpa_s->sme.assoc_req_ie_len) {
608 os_memcpy(wpa_s->sme.assoc_req_ie + wpa_s->sme.assoc_req_ie_len,
609 wpa_s->rsnxe, wpa_s->rsnxe_len);
610 wpa_s->sme.assoc_req_ie_len += wpa_s->rsnxe_len;
611 }
612
c484b198
AS		 613#ifdef CONFIG_HS20
614 if (is_hs20_network(wpa_s, ssid, bss)) {
615 struct wpabuf *hs20;
616
4204669c 617 hs20 = wpabuf_alloc(20 + MAX_ROAMING_CONS_OI_LEN);
c484b198
AS		 618 if (hs20) {
619 int pps_mo_id = hs20_get_pps_mo_id(wpa_s, ssid);
620 size_t len;
621
ec2cf403
JM		 622 wpas_hs20_add_indication(hs20, pps_mo_id,
623 get_hs20_version(bss));
4204669c 624 wpas_hs20_add_roam_cons_sel(hs20, ssid);
c484b198
AS		 625 len = sizeof(wpa_s->sme.assoc_req_ie) -
626 wpa_s->sme.assoc_req_ie_len;
627 if (wpabuf_len(hs20) <= len) {
628 os_memcpy(wpa_s->sme.assoc_req_ie +
629 wpa_s->sme.assoc_req_ie_len,
630 wpabuf_head(hs20), wpabuf_len(hs20));
631 wpa_s->sme.assoc_req_ie_len += wpabuf_len(hs20);
632 }
633 wpabuf_free(hs20);
634 }
635 }
636#endif /* CONFIG_HS20 */
637
170244a1
IP		 638 if (wpa_ie) {
639 size_t len;
640
641 wpa_dbg(wpa_s, MSG_DEBUG, "WPA: Reinsert WPA IE");
642
643 len = sizeof(wpa_s->sme.assoc_req_ie) -
644 wpa_s->sme.assoc_req_ie_len;
645
646 if (len > wpa_ie_len) {
647 os_memcpy(wpa_s->sme.assoc_req_ie +
648 wpa_s->sme.assoc_req_ie_len,
649 wpa_ie, wpa_ie_len);
650 wpa_s->sme.assoc_req_ie_len += wpa_ie_len;
651 } else {
652 wpa_dbg(wpa_s, MSG_DEBUG, "WPA: Failed to add WPA IE");
653 }
654
655 os_free(wpa_ie);
656 }
657
d29fa3a7
JM		 658 if (wpa_s->vendor_elem[VENDOR_ELEM_ASSOC_REQ]) {
659 struct wpabuf *buf = wpa_s->vendor_elem[VENDOR_ELEM_ASSOC_REQ];
660 size_t len;
661
662 len = sizeof(wpa_s->sme.assoc_req_ie) -
663 wpa_s->sme.assoc_req_ie_len;
664 if (wpabuf_len(buf) <= len) {
665 os_memcpy(wpa_s->sme.assoc_req_ie +
666 wpa_s->sme.assoc_req_ie_len,
667 wpabuf_head(buf), wpabuf_len(buf));
668 wpa_s->sme.assoc_req_ie_len += wpabuf_len(buf);
669 }
670 }
671
92c6e2e3 672#ifdef CONFIG_MBO
077232f6 673 mbo_ie = wpa_bss_get_vendor_ie(bss, MBO_IE_VENDOR_TYPE);
2e06cef8 674 if (!wpa_s->disable_mbo_oce && mbo_ie) {
5e57ba25 675 int len;
92c6e2e3 676
5e57ba25
AS		 677 len = wpas_mbo_ie(wpa_s, wpa_s->sme.assoc_req_ie +
678 wpa_s->sme.assoc_req_ie_len,
679 sizeof(wpa_s->sme.assoc_req_ie) -
077232f6
BL		 680 wpa_s->sme.assoc_req_ie_len,
681 !!mbo_attr_from_mbo_ie(mbo_ie,
682 OCE_ATTR_ID_CAPA_IND));
5e57ba25
AS		 683 if (len >= 0)
684 wpa_s->sme.assoc_req_ie_len += len;
92c6e2e3
DS		 685 }
686#endif /* CONFIG_MBO */
687
c10347f2 688#ifdef CONFIG_SAE
59b416c7 689 if (!skip_auth && params.auth_alg == WPA_AUTH_ALG_SAE &&
869af307 690 pmksa_cache_set_current(wpa_s->wpa, NULL, bss->bssid, ssid, 0,
ab3aebcc
JM		 691 NULL,
692 wpa_s->key_mgmt == WPA_KEY_MGMT_FT_SAE ?
693 WPA_KEY_MGMT_FT_SAE :
694 WPA_KEY_MGMT_SAE) == 0) {
bc26ac50
JM		 695 wpa_dbg(wpa_s, MSG_DEBUG,
696 "PMKSA cache entry found - try to use PMKSA caching instead of new SAE authentication");
06b1a104 697 wpa_sm_set_pmk_from_pmksa(wpa_s->wpa);
bc26ac50
JM		 698 params.auth_alg = WPA_AUTH_ALG_OPEN;
699 wpa_s->sme.sae_pmksa_caching = 1;
700 }
701
59b416c7 702 if (!skip_auth && params.auth_alg == WPA_AUTH_ALG_SAE) {
c10347f2 703 if (start)
8e31e955 704 resp = sme_auth_build_sae_commit(wpa_s, ssid,
fd830891 705 bss->bssid, 0,
cfe1ea5c 706 start == 2, NULL);
c10347f2 707 else
5ff39c13 708 resp = sme_auth_build_sae_confirm(wpa_s, 0);
6ac4b15e 709 if (resp == NULL) {
81648d00 710 wpas_connection_failed(wpa_s, bss->bssid);
c10347f2 711 return;
6ac4b15e 712 }
ce16c489
JM		 713 params.auth_data = wpabuf_head(resp);
714 params.auth_data_len = wpabuf_len(resp);
dd43026a 715 wpa_s->sme.sae.state = start ? SAE_COMMITTED : SAE_CONFIRMED;
c10347f2
JM		 716 }
717#endif /* CONFIG_SAE */
718
af670cb4
JM		 719 bssid_changed = !is_zero_ether_addr(wpa_s->bssid);
720 os_memset(wpa_s->bssid, 0, ETH_ALEN);
721 os_memcpy(wpa_s->pending_bssid, bss->bssid, ETH_ALEN);
722 if (bssid_changed)
723 wpas_notify_bssid_changed(wpa_s);
724
f00b9b88
JM		 725 old_ssid = wpa_s->current_ssid;
726 wpa_s->current_ssid = ssid;
727 wpa_supplicant_rsn_supp_set_config(wpa_s, wpa_s->current_ssid);
728 wpa_supplicant_initiate_eapol(wpa_s);
729
730#ifdef CONFIG_FILS
731 /* TODO: FILS operations can in some cases be done between different
732 * network_ctx (i.e., same credentials can be used with multiple
733 * networks). */
734 if (params.auth_alg == WPA_AUTH_ALG_OPEN &&
735 wpa_key_mgmt_fils(ssid->key_mgmt)) {
64983516
JM		 736 const u8 *indic;
737 u16 fils_info;
af835d75
AB		 738 const u8 *realm, *username, *rrk;
739 size_t realm_len, username_len, rrk_len;
740 u16 next_seq_num;
64983516
JM		 741
742 /*
743 * Check FILS Indication element (FILS Information field) bits
744 * indicating supported authentication algorithms against local
745 * configuration (ssid->fils_dh_group). Try to use FILS
746 * authentication only if the AP supports the combination in the
747 * network profile. */
748 indic = wpa_bss_get_ie(bss, WLAN_EID_FILS_INDICATION);
749 if (!indic || indic[1] < 2) {
750 wpa_printf(MSG_DEBUG, "SME: " MACSTR
751 " does not include FILS Indication element - cannot use FILS authentication with it",
752 MAC2STR(bss->bssid));
753 goto no_fils;
754 }
755
756 fils_info = WPA_GET_LE16(indic + 2);
757 if (ssid->fils_dh_group == 0 && !(fils_info & BIT(9))) {
758 wpa_printf(MSG_DEBUG, "SME: " MACSTR
759 " does not support FILS SK without PFS - cannot use FILS authentication with it",
760 MAC2STR(bss->bssid));
761 goto no_fils;
762 }
763 if (ssid->fils_dh_group != 0 && !(fils_info & BIT(10))) {
764 wpa_printf(MSG_DEBUG, "SME: " MACSTR
765 " does not support FILS SK with PFS - cannot use FILS authentication with it",
766 MAC2STR(bss->bssid));
767 goto no_fils;
768 }
769
af835d75
AB		 770 if (wpa_s->last_con_fail_realm &&
771 eapol_sm_get_erp_info(wpa_s->eapol, &ssid->eap,
772 &username, &username_len,
773 &realm, &realm_len, &next_seq_num,
774 &rrk, &rrk_len) == 0 &&
775 realm && realm_len == wpa_s->last_con_fail_realm_len &&
776 os_memcmp(realm, wpa_s->last_con_fail_realm,
777 realm_len) == 0) {
778 wpa_printf(MSG_DEBUG,
779 "SME: FILS authentication for this realm failed last time - try to regenerate ERP key hierarchy");
780 goto no_fils;
781 }
782
f00b9b88 783 if (pmksa_cache_set_current(wpa_s->wpa, NULL, bss->bssid,
869af307 784 ssid, 0,
852b2f27
JM		 785 wpa_bss_get_fils_cache_id(bss),
786 0) == 0)
f00b9b88
JM		 787 wpa_printf(MSG_DEBUG,
788 "SME: Try to use FILS with PMKSA caching");
af3e362f 789 resp = fils_build_auth(wpa_s->wpa, ssid->fils_dh_group, md);
f00b9b88 790 if (resp) {
76e20f4f
JM		 791 int auth_alg;
792
793 if (ssid->fils_dh_group)
794 wpa_printf(MSG_DEBUG,
795 "SME: Try to use FILS SK authentication with PFS (DH Group %u)",
796 ssid->fils_dh_group);
797 else
798 wpa_printf(MSG_DEBUG,
799 "SME: Try to use FILS SK authentication without PFS");
800 auth_alg = ssid->fils_dh_group ?
801 WPA_AUTH_ALG_FILS_SK_PFS : WPA_AUTH_ALG_FILS;
802 params.auth_alg = auth_alg;
f00b9b88
JM		 803 params.auth_data = wpabuf_head(resp);
804 params.auth_data_len = wpabuf_len(resp);
76e20f4f 805 wpa_s->sme.auth_alg = auth_alg;
f00b9b88
JM		 806 }
807 }
64983516 808no_fils:
f00b9b88
JM		 809#endif /* CONFIG_FILS */
810
a4cba8f1 811 wpa_supplicant_cancel_sched_scan(wpa_s);
c2a04078
JM		 812 wpa_supplicant_cancel_scan(wpa_s);
813
f049052b 814 wpa_msg(wpa_s, MSG_INFO, "SME: Trying to authenticate with " MACSTR
c2a04078
JM		 815 " (SSID='%s' freq=%d MHz)", MAC2STR(params.bssid),
816 wpa_ssid_txt(params.ssid, params.ssid_len), params.freq);
817
6aea02e5 818 eapol_sm_notify_portValid(wpa_s->eapol, FALSE);
c2a04078
JM		 819 wpa_clear_keys(wpa_s, bss->bssid);
820 wpa_supplicant_set_state(wpa_s, WPA_AUTHENTICATING);
8bac466b
JM		 821 if (old_ssid != wpa_s->current_ssid)
822 wpas_notify_network_changed(wpa_s);
c2a04078 823
ece4ac5f
MG		 824#ifdef CONFIG_HS20
825 hs20_configure_frame_filters(wpa_s);
826#endif /* CONFIG_HS20 */
827
d0df6437
IP		 828#ifdef CONFIG_P2P
829 /*
830 * If multi-channel concurrency is not supported, check for any
831 * frequency conflict. In case of any frequency conflict, remove the
832 * least prioritized connection.
833 */
834 if (wpa_s->num_multichan_concurrent < 2) {
835 int freq, num;
836 num = get_shared_radio_freqs(wpa_s, &freq, 1);
837 if (num > 0 && freq > 0 && freq != params.freq) {
838 wpa_printf(MSG_DEBUG,
839 "Conflicting frequency found (%d != %d)",
840 freq, params.freq);
841 if (wpas_p2p_handle_frequency_conflicts(wpa_s,
842 params.freq,
843 ssid) < 0) {
844 wpas_connection_failed(wpa_s, bss->bssid);
845 wpa_supplicant_mark_disassoc(wpa_s);
846 wpabuf_free(resp);
847 wpas_connect_work_done(wpa_s);
848 return;
849 }
850 }
851 }
852#endif /* CONFIG_P2P */
853
59b416c7
JM		 854 if (skip_auth) {
855 wpa_msg(wpa_s, MSG_DEBUG,
856 "SME: Skip authentication step on reassoc-to-same-BSS");
857 wpabuf_free(resp);
858 sme_associate(wpa_s, ssid->mode, bss->bssid, WLAN_AUTH_OPEN);
859 return;
860 }
861
862
62c72d72 863 wpa_s->sme.auth_alg = params.auth_alg;
c2a04078 864 if (wpa_drv_authenticate(wpa_s, &params) < 0) {
f049052b 865 wpa_msg(wpa_s, MSG_INFO, "SME: Authentication request to the "
c2a04078 866 "driver failed");
ed57c590 867 wpas_connection_failed(wpa_s, bss->bssid);
1193dc8f 868 wpa_supplicant_mark_disassoc(wpa_s);
c10347f2 869 wpabuf_free(resp);
6ac4b15e 870 wpas_connect_work_done(wpa_s);
c2a04078
JM		 871 return;
872 }
873
e29853bb
BG		 874 eloop_register_timeout(SME_AUTH_TIMEOUT, 0, sme_auth_timer, wpa_s,
875 NULL);
c2a04078
JM		 876
877 /*
878 * Association will be started based on the authentication event from
879 * the driver.
880 */
c10347f2
JM		 881
882 wpabuf_free(resp);
883}
884
885
6ac4b15e
JM		 886static void sme_auth_start_cb(struct wpa_radio_work *work, int deinit)
887{
888 struct wpa_connect_work *cwork = work->ctx;
889 struct wpa_supplicant *wpa_s = work->wpa_s;
890
891 if (deinit) {
b3253ebb
AO		 892 if (work->started)
893 wpa_s->connect_work = NULL;
894
6ac4b15e
JM		 895 wpas_connect_work_free(cwork);
896 return;
897 }
898
899 wpa_s->connect_work = work;
900
a7f5271d 901 if (cwork->bss_removed ||
6108536d
HW		 902 !wpas_valid_bss_ssid(wpa_s, cwork->bss, cwork->ssid) ||
903 wpas_network_disabled(wpa_s, cwork->ssid)) {
6ac4b15e
JM		 904 wpa_dbg(wpa_s, MSG_DEBUG, "SME: BSS/SSID entry for authentication not valid anymore - drop connection attempt");
905 wpas_connect_work_done(wpa_s);
906 return;
907 }
908
2c2c5579
JM		 909 /* Starting new connection, so clear the possibly used WPA IE from the
910 * previous association. */
911 wpa_sm_set_assoc_wpa_ie(wpa_s->wpa, NULL, 0);
6d6c8877
JM		 912 wpa_sm_set_assoc_rsnxe(wpa_s->wpa, NULL, 0);
913 wpa_s->rsnxe_len = 0;
2c2c5579 914
6ac4b15e
JM		 915 sme_send_authentication(wpa_s, cwork->bss, cwork->ssid, 1);
916}
917
918
c10347f2
JM		 919void sme_authenticate(struct wpa_supplicant *wpa_s,
920 struct wpa_bss *bss, struct wpa_ssid *ssid)
921{
6ac4b15e
JM		 922 struct wpa_connect_work *cwork;
923
924 if (bss == NULL || ssid == NULL)
925 return;
926 if (wpa_s->connect_work) {
927 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Reject sme_authenticate() call since connect_work exist");
928 return;
929 }
930
f0e30c84 931 if (radio_work_pending(wpa_s, "sme-connect")) {
f1c4dbf5
IP		 932 /*
933 * The previous sme-connect work might no longer be valid due to
934 * the fact that the BSS list was updated. In addition, it makes
935 * sense to adhere to the 'newer' decision.
936 */
937 wpa_dbg(wpa_s, MSG_DEBUG,
938 "SME: Remove previous pending sme-connect");
939 radio_remove_works(wpa_s, "sme-connect", 0);
f0e30c84
JM		 940 }
941
4ead7cfd
KV		 942 wpas_abort_ongoing_scan(wpa_s);
943
6ac4b15e
JM		 944 cwork = os_zalloc(sizeof(*cwork));
945 if (cwork == NULL)
946 return;
947 cwork->bss = bss;
948 cwork->ssid = ssid;
949 cwork->sme = 1;
950
98efcc41 951#ifdef CONFIG_SAE
dd43026a 952 wpa_s->sme.sae.state = SAE_NOTHING;
98efcc41 953 wpa_s->sme.sae.send_confirm = 0;
18ca7332 954 wpa_s->sme.sae_group_index = 0;
98efcc41 955#endif /* CONFIG_SAE */
6ac4b15e
JM		 956
957 if (radio_add_work(wpa_s, bss->freq, "sme-connect", 1,
958 sme_auth_start_cb, cwork) < 0)
959 wpas_connect_work_free(cwork);
c2a04078
JM		 960}
961
962
c10347f2 963#ifdef CONFIG_SAE
21af6d15 964
5ff39c13
SD		 965static int sme_external_auth_build_buf(struct wpabuf *buf,
966 struct wpabuf *params,
967 const u8 *sa, const u8 *da,
cfe1ea5c
JM		 968 u16 auth_transaction, u16 seq_num,
969 u16 status_code)
5ff39c13
SD		 970{
971 struct ieee80211_mgmt *resp;
972
973 resp = wpabuf_put(buf, offsetof(struct ieee80211_mgmt,
974 u.auth.variable));
975
976 resp->frame_control = host_to_le16((WLAN_FC_TYPE_MGMT << 2) |
977 (WLAN_FC_STYPE_AUTH << 4));
978 os_memcpy(resp->da, da, ETH_ALEN);
979 os_memcpy(resp->sa, sa, ETH_ALEN);
980 os_memcpy(resp->bssid, da, ETH_ALEN);
fcb3f11e
AP		 981 resp->u.auth.auth_alg = host_to_le16(WLAN_AUTH_SAE);
982 resp->seq_ctrl = host_to_le16(seq_num << 4);
983 resp->u.auth.auth_transaction = host_to_le16(auth_transaction);
cfe1ea5c 984 resp->u.auth.status_code = host_to_le16(status_code);
5ff39c13
SD		 985 if (params)
986 wpabuf_put_buf(buf, params);
987
988 return 0;
989}
990
991
fb6ebd1c
SD		 992static int sme_external_auth_send_sae_commit(struct wpa_supplicant *wpa_s,
993 const u8 *bssid,
994 struct wpa_ssid *ssid)
5ff39c13
SD		 995{
996 struct wpabuf *resp, *buf;
cfe1ea5c 997 int use_pt;
5ff39c13 998
cfe1ea5c 999 resp = sme_auth_build_sae_commit(wpa_s, ssid, bssid, 1, 0, &use_pt);
fb6ebd1c
SD		 1000 if (!resp) {
1001 wpa_printf(MSG_DEBUG, "SAE: Failed to build SAE commit");
1002 return -1;
1003 }
5ff39c13
SD		 1004
1005 wpa_s->sme.sae.state = SAE_COMMITTED;
1006 buf = wpabuf_alloc(4 + SAE_COMMIT_MAX_LEN + wpabuf_len(resp));
1007 if (!buf) {
1008 wpabuf_free(resp);
fb6ebd1c 1009 return -1;
5ff39c13
SD		 1010 }
1011
1012 wpa_s->sme.seq_num++;
1013 sme_external_auth_build_buf(buf, resp, wpa_s->own_addr,
cfe1ea5c
JM		 1014 bssid, 1, wpa_s->sme.seq_num,
1015 use_pt ? WLAN_STATUS_SAE_HASH_TO_ELEMENT :
1016 WLAN_STATUS_SUCCESS);
5ff39c13
SD		 1017 wpa_drv_send_mlme(wpa_s, wpabuf_head(buf), wpabuf_len(buf), 1, 0);
1018 wpabuf_free(resp);
1019 wpabuf_free(buf);
fb6ebd1c
SD		 1020
1021 return 0;
5ff39c13
SD		 1022}
1023
1024
1025static void sme_send_external_auth_status(struct wpa_supplicant *wpa_s,
1026 u16 status)
1027{
1028 struct external_auth params;
1029
1030 os_memset(&params, 0, sizeof(params));
1031 params.status = status;
d42df8d6
JM		 1032 params.ssid = wpa_s->sme.ext_auth_ssid;
1033 params.ssid_len = wpa_s->sme.ext_auth_ssid_len;
1034 params.bssid = wpa_s->sme.ext_auth_bssid;
346d10cf
SD		 1035 if (wpa_s->conf->sae_pmkid_in_assoc && status == WLAN_STATUS_SUCCESS)
1036 params.pmkid = wpa_s->sme.sae.pmkid;
5ff39c13
SD		 1037 wpa_drv_send_external_auth_status(wpa_s, &params);
1038}
1039
1040
fb6ebd1c
SD		 1041static int sme_handle_external_auth_start(struct wpa_supplicant *wpa_s,
1042 union wpa_event_data *data)
5ff39c13
SD		 1043{
1044 struct wpa_ssid *ssid;
1045 size_t ssid_str_len = data->external_auth.ssid_len;
dd1a8cef 1046 const u8 *ssid_str = data->external_auth.ssid;
5ff39c13
SD		 1047
1048 /* Get the SSID conf from the ssid string obtained */
1049 for (ssid = wpa_s->conf->ssid; ssid; ssid = ssid->next) {
1050 if (!wpas_network_disabled(wpa_s, ssid) &&
1051 ssid_str_len == ssid->ssid_len &&
18a0508a 1052 os_memcmp(ssid_str, ssid->ssid, ssid_str_len) == 0 &&
bcf19000 1053 (ssid->key_mgmt & (WPA_KEY_MGMT_SAE | WPA_KEY_MGMT_FT_SAE)))
5ff39c13
SD		 1054 break;
1055 }
fb6ebd1c
SD		 1056 if (!ssid ||
1057 sme_external_auth_send_sae_commit(wpa_s, data->external_auth.bssid,
1058 ssid) < 0)
1059 return -1;
1060
1061 return 0;
5ff39c13
SD		 1062}
1063
1064
1065static void sme_external_auth_send_sae_confirm(struct wpa_supplicant *wpa_s,
1066 const u8 *da)
1067{
1068 struct wpabuf *resp, *buf;
1069
1070 resp = sme_auth_build_sae_confirm(wpa_s, 1);
1071 if (!resp) {
1072 wpa_printf(MSG_DEBUG, "SAE: Confirm message buf alloc failure");
1073 return;
1074 }
1075
1076 wpa_s->sme.sae.state = SAE_CONFIRMED;
1077 buf = wpabuf_alloc(4 + SAE_CONFIRM_MAX_LEN + wpabuf_len(resp));
1078 if (!buf) {
1079 wpa_printf(MSG_DEBUG, "SAE: Auth Confirm buf alloc failure");
1080 wpabuf_free(resp);
1081 return;
1082 }
1083 wpa_s->sme.seq_num++;
1084 sme_external_auth_build_buf(buf, resp, wpa_s->own_addr,
cfe1ea5c
JM		 1085 da, 2, wpa_s->sme.seq_num,
1086 WLAN_STATUS_SUCCESS);
5ff39c13
SD		 1087 wpa_drv_send_mlme(wpa_s, wpabuf_head(buf), wpabuf_len(buf), 1, 0);
1088 wpabuf_free(resp);
1089 wpabuf_free(buf);
1090}
1091
1092
1093void sme_external_auth_trigger(struct wpa_supplicant *wpa_s,
1094 union wpa_event_data *data)
1095{
1096 if (RSN_SELECTOR_GET(&data->external_auth.key_mgmt_suite) !=
1097 RSN_AUTH_KEY_MGMT_SAE)
1098 return;
1099
1100 if (data->external_auth.action == EXT_AUTH_START) {
d42df8d6
JM		 1101 if (!data->external_auth.bssid || !data->external_auth.ssid)
1102 return;
1103 os_memcpy(wpa_s->sme.ext_auth_bssid, data->external_auth.bssid,
1104 ETH_ALEN);
1105 os_memcpy(wpa_s->sme.ext_auth_ssid, data->external_auth.ssid,
1106 data->external_auth.ssid_len);
1107 wpa_s->sme.ext_auth_ssid_len = data->external_auth.ssid_len;
5ff39c13
SD		 1108 wpa_s->sme.seq_num = 0;
1109 wpa_s->sme.sae.state = SAE_NOTHING;
1110 wpa_s->sme.sae.send_confirm = 0;
1111 wpa_s->sme.sae_group_index = 0;
fb6ebd1c
SD		 1112 if (sme_handle_external_auth_start(wpa_s, data) < 0)
1113 sme_send_external_auth_status(wpa_s,
1114 WLAN_STATUS_UNSPECIFIED_FAILURE);
5ff39c13
SD		 1115 } else if (data->external_auth.action == EXT_AUTH_ABORT) {
1116 /* Report failure to driver for the wrong trigger */
1117 sme_send_external_auth_status(wpa_s,
1118 WLAN_STATUS_UNSPECIFIED_FAILURE);
1119 }
1120}
1121
1122
444d76f7
JM		 1123static int sme_sae_is_group_enabled(struct wpa_supplicant *wpa_s, int group)
1124{
1125 int *groups = wpa_s->conf->sae_groups;
1126 int default_groups[] = { 19, 20, 21, 0 };
1127 int i;
1128
1129 if (!groups)
1130 groups = default_groups;
1131
1132 for (i = 0; groups[i] > 0; i++) {
1133 if (groups[i] == group)
1134 return 1;
1135 }
1136
1137 return 0;
1138}
1139
1140
1141static int sme_check_sae_rejected_groups(struct wpa_supplicant *wpa_s,
1142 const struct wpabuf *groups)
1143{
1144 size_t i, count;
1145 const u8 *pos;
1146
1147 if (!groups)
1148 return 0;
1149
1150 pos = wpabuf_head(groups);
1151 count = wpabuf_len(groups) / 2;
1152 for (i = 0; i < count; i++) {
1153 int enabled;
1154 u16 group;
1155
1156 group = WPA_GET_LE16(pos);
1157 pos += 2;
1158 enabled = sme_sae_is_group_enabled(wpa_s, group);
1159 wpa_printf(MSG_DEBUG, "SAE: Rejected group %u is %s",
1160 group, enabled ? "enabled" : "disabled");
1161 if (enabled)
1162 return 1;
1163 }
1164
1165 return 0;
1166}
1167
1168
c10347f2 1169static int sme_sae_auth(struct wpa_supplicant *wpa_s, u16 auth_transaction,
5ff39c13
SD		 1170 u16 status_code, const u8 *data, size_t len,
1171 int external, const u8 *sa)
c10347f2 1172{
a959a3b6
MH		 1173 int *groups;
1174
c10347f2
JM		 1175 wpa_dbg(wpa_s, MSG_DEBUG, "SME: SAE authentication transaction %u "
1176 "status code %u", auth_transaction, status_code);
c10347f2 1177
d136c376
JM		 1178 if (auth_transaction == 1 &&
1179 status_code == WLAN_STATUS_ANTI_CLOGGING_TOKEN_REQ &&
1180 wpa_s->sme.sae.state == SAE_COMMITTED &&
5ff39c13 1181 (external || wpa_s->current_bss) && wpa_s->current_ssid) {
a9fe1303 1182 int default_groups[] = { 19, 20, 21, 0 };
a959a3b6 1183 u16 group;
5e32fb01
JM		 1184 const u8 *token_pos;
1185 size_t token_len;
1186 int h2e = 0;
a959a3b6
MH		 1187
1188 groups = wpa_s->conf->sae_groups;
1189 if (!groups || groups[0] <= 0)
1190 groups = default_groups;
1191
5e32fb01
JM		 1192 wpa_hexdump(MSG_DEBUG, "SME: SAE anti-clogging token request",
1193 data, len);
a959a3b6
MH		 1194 if (len < sizeof(le16)) {
1195 wpa_dbg(wpa_s, MSG_DEBUG,
1196 "SME: Too short SAE anti-clogging token request");
1197 return -1;
1198 }
1199 group = WPA_GET_LE16(data);
1200 wpa_dbg(wpa_s, MSG_DEBUG,
1201 "SME: SAE anti-clogging token requested (group %u)",
1202 group);
1203 if (sae_group_allowed(&wpa_s->sme.sae, groups, group) !=
1204 WLAN_STATUS_SUCCESS) {
1205 wpa_dbg(wpa_s, MSG_ERROR,
1206 "SME: SAE group %u of anti-clogging request is invalid",
1207 group);
1208 return -1;
1209 }
d136c376 1210 wpabuf_free(wpa_s->sme.sae_token);
5e32fb01
JM		 1211 token_pos = data + sizeof(le16);
1212 token_len = len - sizeof(le16);
1213 if (wpa_s->sme.sae.tmp)
1214 h2e = wpa_s->sme.sae.tmp->h2e;
1215 if (h2e) {
1216 if (token_len < 3) {
1217 wpa_dbg(wpa_s, MSG_DEBUG,
1218 "SME: Too short SAE anti-clogging token container");
1219 return -1;
1220 }
1221 if (token_pos[0] != WLAN_EID_EXTENSION ||
1222 token_pos[1] == 0 ||
1223 token_pos[1] > token_len - 2 ||
1224 token_pos[2] != WLAN_EID_EXT_ANTI_CLOGGING_TOKEN) {
1225 wpa_dbg(wpa_s, MSG_DEBUG,
1226 "SME: Invalid SAE anti-clogging token container header");
1227 return -1;
1228 }
1229 token_len = token_pos[1] - 1;
1230 token_pos += 3;
1231 }
1232 wpa_s->sme.sae_token = wpabuf_alloc_copy(token_pos, token_len);
1233 wpa_hexdump_buf(MSG_DEBUG, "SME: Requested anti-clogging token",
1234 wpa_s->sme.sae_token);
5ff39c13
SD		 1235 if (!external)
1236 sme_send_authentication(wpa_s, wpa_s->current_bss,
fd830891 1237 wpa_s->current_ssid, 2);
5ff39c13
SD		 1238 else
1239 sme_external_auth_send_sae_commit(
d42df8d6 1240 wpa_s, wpa_s->sme.ext_auth_bssid,
5ff39c13 1241 wpa_s->current_ssid);
d136c376
JM		 1242 return 0;
1243 }
1244
625f202a
JM		 1245 if (auth_transaction == 1 &&
1246 status_code == WLAN_STATUS_FINITE_CYCLIC_GROUP_NOT_SUPPORTED &&
1247 wpa_s->sme.sae.state == SAE_COMMITTED &&
5ff39c13 1248 (external || wpa_s->current_bss) && wpa_s->current_ssid) {
625f202a 1249 wpa_dbg(wpa_s, MSG_DEBUG, "SME: SAE group not supported");
447cd5f2
JM		 1250 int_array_add_unique(&wpa_s->sme.sae_rejected_groups,
1251 wpa_s->sme.sae.group);
625f202a
JM		 1252 wpa_s->sme.sae_group_index++;
1253 if (sme_set_sae_group(wpa_s) < 0)
1254 return -1; /* no other groups enabled */
1255 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Try next enabled SAE group");
5ff39c13
SD		 1256 if (!external)
1257 sme_send_authentication(wpa_s, wpa_s->current_bss,
1258 wpa_s->current_ssid, 1);
1259 else
1260 sme_external_auth_send_sae_commit(
d42df8d6 1261 wpa_s, wpa_s->sme.ext_auth_bssid,
5ff39c13 1262 wpa_s->current_ssid);
625f202a
JM		 1263 return 0;
1264 }
1265
9be19d0b
JM		 1266 if (auth_transaction == 1 &&
1267 status_code == WLAN_STATUS_UNKNOWN_PASSWORD_IDENTIFIER) {
1268 const u8 *bssid = sa ? sa : wpa_s->pending_bssid;
1269
1270 wpa_msg(wpa_s, MSG_INFO,
1271 WPA_EVENT_SAE_UNKNOWN_PASSWORD_IDENTIFIER MACSTR,
1272 MAC2STR(bssid));
1273 return -1;
1274 }
1275
cfe1ea5c
JM		 1276 if (status_code != WLAN_STATUS_SUCCESS &&
1277 status_code != WLAN_STATUS_SAE_HASH_TO_ELEMENT)
c10347f2
JM		 1278 return -1;
1279
1280 if (auth_transaction == 1) {
6a58444d
JM		 1281 u16 res;
1282
a959a3b6 1283 groups = wpa_s->conf->sae_groups;
18ca7332 1284
c10347f2 1285 wpa_dbg(wpa_s, MSG_DEBUG, "SME SAE commit");
5ff39c13 1286 if ((!external && wpa_s->current_bss == NULL) ||
c10347f2
JM		 1287 wpa_s->current_ssid == NULL)
1288 return -1;
1b5865a5
JM		 1289 if (wpa_s->sme.sae.state != SAE_COMMITTED) {
1290 wpa_printf(MSG_DEBUG,
1291 "SAE: Ignore commit message while waiting for confirm");
1292 return 0;
1293 }
ca1cecc5
JM		 1294 if (wpa_s->sme.sae.tmp && wpa_s->sme.sae.tmp->h2e &&
1295 status_code == WLAN_STATUS_SUCCESS) {
1296 wpa_printf(MSG_DEBUG,
1297 "SAE: Unexpected use of status code 0 in SAE commit when H2E was expected");
1298 return -1;
1299 }
1300 if (wpa_s->sme.sae.tmp && !wpa_s->sme.sae.tmp->h2e &&
1301 status_code == WLAN_STATUS_SAE_HASH_TO_ELEMENT) {
1302 wpa_printf(MSG_DEBUG,
1303 "SAE: Unexpected use of status code for H2E in SAE commit when H2E was not expected");
1304 return -1;
1305 }
1306
18ca7332
JM		 1307 if (groups && groups[0] <= 0)
1308 groups = NULL;
6a58444d 1309 res = sae_parse_commit(&wpa_s->sme.sae, data, len, NULL, NULL,
86f60848
JM		 1310 groups, status_code ==
1311 WLAN_STATUS_SAE_HASH_TO_ELEMENT);
6a58444d
JM		 1312 if (res == SAE_SILENTLY_DISCARD) {
1313 wpa_printf(MSG_DEBUG,
1314 "SAE: Drop commit message due to reflection attack");
1315 return 0;
1316 }
1317 if (res != WLAN_STATUS_SUCCESS)
21af6d15 1318 return -1;
146f6c9a 1319
444d76f7
JM		 1320 if (wpa_s->sme.sae.tmp &&
1321 sme_check_sae_rejected_groups(
1322 wpa_s,
c88e01e1 1323 wpa_s->sme.sae.tmp->peer_rejected_groups))
444d76f7
JM		 1324 return -1;
1325
146f6c9a
JM		 1326 if (sae_process_commit(&wpa_s->sme.sae) < 0) {
1327 wpa_printf(MSG_DEBUG, "SAE: Failed to process peer "
1328 "commit");
1329 return -1;
1330 }
1331
d136c376
JM		 1332 wpabuf_free(wpa_s->sme.sae_token);
1333 wpa_s->sme.sae_token = NULL;
5ff39c13
SD		 1334 if (!external)
1335 sme_send_authentication(wpa_s, wpa_s->current_bss,
1336 wpa_s->current_ssid, 0);
1337 else
1338 sme_external_auth_send_sae_confirm(wpa_s, sa);
c10347f2
JM		 1339 return 0;
1340 } else if (auth_transaction == 2) {
cfe1ea5c
JM		 1341 if (status_code != WLAN_STATUS_SUCCESS)
1342 return -1;
c10347f2 1343 wpa_dbg(wpa_s, MSG_DEBUG, "SME SAE confirm");
dd43026a 1344 if (wpa_s->sme.sae.state != SAE_CONFIRMED)
21af6d15 1345 return -1;
f2e9818f 1346 if (sae_check_confirm(&wpa_s->sme.sae, data, len) < 0)
21af6d15 1347 return -1;
dd43026a 1348 wpa_s->sme.sae.state = SAE_ACCEPTED;
b4fd3613 1349 sae_clear_temp_data(&wpa_s->sme.sae);
5ff39c13
SD		 1350
1351 if (external) {
1352 /* Report success to driver */
1353 sme_send_external_auth_status(wpa_s,
1354 WLAN_STATUS_SUCCESS);
1355 }
1356
c10347f2
JM		 1357 return 1;
1358 }
1359
1360 return -1;
1361}
5ff39c13
SD		 1362
1363
b7cd6487 1364static int sme_sae_set_pmk(struct wpa_supplicant *wpa_s, const u8 *bssid)
d2b20838
JM		 1365{
1366 wpa_printf(MSG_DEBUG,
1367 "SME: SAE completed - setting PMK for 4-way handshake");
1368 wpa_sm_set_pmk(wpa_s->wpa, wpa_s->sme.sae.pmk, PMK_LEN,
b7cd6487 1369 wpa_s->sme.sae.pmkid, bssid);
d2b20838
JM		 1370 if (wpa_s->conf->sae_pmkid_in_assoc) {
1371 /* Update the own RSNE contents now that we have set the PMK
1372 * and added a PMKSA cache entry based on the successfully
1373 * completed SAE exchange. In practice, this will add the PMKID
1374 * into RSNE. */
1375 if (wpa_s->sme.assoc_req_ie_len + 2 + PMKID_LEN >
1376 sizeof(wpa_s->sme.assoc_req_ie)) {
1377 wpa_msg(wpa_s, MSG_WARNING,
1378 "RSN: Not enough room for inserting own PMKID into RSNE");
1379 return -1;
1380 }
1381 if (wpa_insert_pmkid(wpa_s->sme.assoc_req_ie,
1382 &wpa_s->sme.assoc_req_ie_len,
1383 wpa_s->sme.sae.pmkid) < 0)
1384 return -1;
1385 wpa_hexdump(MSG_DEBUG,
1386 "SME: Updated Association Request IEs",
1387 wpa_s->sme.assoc_req_ie,
1388 wpa_s->sme.assoc_req_ie_len);
1389 }
1390
1391 return 0;
1392}
1393
1394
5ff39c13
SD		 1395void sme_external_auth_mgmt_rx(struct wpa_supplicant *wpa_s,
1396 const u8 *auth_frame, size_t len)
1397{
1398 const struct ieee80211_mgmt *header;
1399 size_t auth_length;
1400
1401 header = (const struct ieee80211_mgmt *) auth_frame;
1402 auth_length = IEEE80211_HDRLEN + sizeof(header->u.auth);
1403
1404 if (len < auth_length) {
1405 /* Notify failure to the driver */
1406 sme_send_external_auth_status(wpa_s,
1407 WLAN_STATUS_UNSPECIFIED_FAILURE);
1408 return;
1409 }
1410
fcb3f11e 1411 if (le_to_host16(header->u.auth.auth_alg) == WLAN_AUTH_SAE) {
5ff39c13
SD		 1412 int res;
1413
fcb3f11e
AP		 1414 res = sme_sae_auth(
1415 wpa_s, le_to_host16(header->u.auth.auth_transaction),
1416 le_to_host16(header->u.auth.status_code),
1417 header->u.auth.variable,
1418 len - auth_length, 1, header->sa);
5ff39c13
SD		 1419 if (res < 0) {
1420 /* Notify failure to the driver */
1421 sme_send_external_auth_status(
1422 wpa_s, WLAN_STATUS_UNSPECIFIED_FAILURE);
1423 return;
1424 }
1425 if (res != 1)
1426 return;
1427
b7cd6487 1428 if (sme_sae_set_pmk(wpa_s, wpa_s->sme.ext_auth_bssid) < 0)
d2b20838 1429 return;
5ff39c13
SD		 1430 }
1431}
1432
c10347f2
JM		 1433#endif /* CONFIG_SAE */
1434
1435
c2a04078
JM		 1436void sme_event_auth(struct wpa_supplicant *wpa_s, union wpa_event_data *data)
1437{
c2a04078
JM		 1438 struct wpa_ssid *ssid = wpa_s->current_ssid;
1439
1440 if (ssid == NULL) {
f049052b
BG		 1441 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Ignore authentication event "
1442 "when network is not selected");
c2a04078
JM		 1443 return;
1444 }
1445
1446 if (wpa_s->wpa_state != WPA_AUTHENTICATING) {
f049052b
BG		 1447 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Ignore authentication event "
1448 "when not in authenticating state");
c2a04078
JM		 1449 return;
1450 }
1451
1452 if (os_memcmp(wpa_s->pending_bssid, data->auth.peer, ETH_ALEN) != 0) {
f049052b
BG		 1453 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Ignore authentication with "
1454 "unexpected peer " MACSTR,
1455 MAC2STR(data->auth.peer));
c2a04078
JM		 1456 return;
1457 }
1458
f049052b 1459 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Authentication response: peer=" MACSTR
c10347f2 1460 " auth_type=%d auth_transaction=%d status_code=%d",
f049052b 1461 MAC2STR(data->auth.peer), data->auth.auth_type,
c10347f2 1462 data->auth.auth_transaction, data->auth.status_code);
c2a04078
JM		 1463 wpa_hexdump(MSG_MSGDUMP, "SME: Authentication response IEs",
1464 data->auth.ies, data->auth.ies_len);
1465
e29853bb
BG		 1466 eloop_cancel_timeout(sme_auth_timer, wpa_s, NULL);
1467
c10347f2
JM		 1468#ifdef CONFIG_SAE
1469 if (data->auth.auth_type == WLAN_AUTH_SAE) {
21af6d15
JM		 1470 int res;
1471 res = sme_sae_auth(wpa_s, data->auth.auth_transaction,
1472 data->auth.status_code, data->auth.ies,
5ff39c13 1473 data->auth.ies_len, 0, NULL);
21af6d15
JM		 1474 if (res < 0) {
1475 wpas_connection_failed(wpa_s, wpa_s->pending_bssid);
1476 wpa_supplicant_set_state(wpa_s, WPA_DISCONNECTED);
1477
1478 }
1479 if (res != 1)
c10347f2 1480 return;
47b55a3e 1481
b7cd6487 1482 if (sme_sae_set_pmk(wpa_s, wpa_s->pending_bssid) < 0)
d2b20838 1483 return;
c10347f2
JM		 1484 }
1485#endif /* CONFIG_SAE */
1486
c2a04078 1487 if (data->auth.status_code != WLAN_STATUS_SUCCESS) {
ec4387f9
JM		 1488 char *ie_txt = NULL;
1489
1490 if (data->auth.ies && data->auth.ies_len) {
1491 size_t buflen = 2 * data->auth.ies_len + 1;
1492 ie_txt = os_malloc(buflen);
1493 if (ie_txt) {
1494 wpa_snprintf_hex(ie_txt, buflen, data->auth.ies,
1495 data->auth.ies_len);
1496 }
1497 }
1498 wpa_msg(wpa_s, MSG_INFO, WPA_EVENT_AUTH_REJECT MACSTR
5f11880f 1499 " auth_type=%u auth_transaction=%u status_code=%u%s%s",
ec4387f9
JM		 1500 MAC2STR(data->auth.peer), data->auth.auth_type,
1501 data->auth.auth_transaction, data->auth.status_code,
5f11880f
JM		 1502 ie_txt ? " ie=" : "",
1503 ie_txt ? ie_txt : "");
ec4387f9 1504 os_free(ie_txt);
cb1583f6 1505
af835d75
AB		 1506#ifdef CONFIG_FILS
1507 if (wpa_s->sme.auth_alg == WPA_AUTH_ALG_FILS ||
1508 wpa_s->sme.auth_alg == WPA_AUTH_ALG_FILS_SK_PFS)
1509 fils_connection_failure(wpa_s);
1510#endif /* CONFIG_FILS */
1511
cb1583f6
SO		 1512 if (data->auth.status_code !=
1513 WLAN_STATUS_NOT_SUPPORTED_AUTH_ALG ||
1514 wpa_s->sme.auth_alg == data->auth.auth_type ||
7e6646c7 1515 wpa_s->current_ssid->auth_alg == WPA_AUTH_ALG_LEAP) {
0fb337c1 1516 wpas_connection_failed(wpa_s, wpa_s->pending_bssid);
c1c02342 1517 wpa_supplicant_set_state(wpa_s, WPA_DISCONNECTED);
cb1583f6 1518 return;
7e6646c7 1519 }
cb1583f6 1520
d9504779
JM		 1521 wpas_connect_work_done(wpa_s);
1522
cb1583f6
SO		 1523 switch (data->auth.auth_type) {
1524 case WLAN_AUTH_OPEN:
1525 wpa_s->current_ssid->auth_alg = WPA_AUTH_ALG_SHARED;
1526
f049052b 1527 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Trying SHARED auth");
cb1583f6
SO		 1528 wpa_supplicant_associate(wpa_s, wpa_s->current_bss,
1529 wpa_s->current_ssid);
1530 return;
1531
1532 case WLAN_AUTH_SHARED_KEY:
1533 wpa_s->current_ssid->auth_alg = WPA_AUTH_ALG_LEAP;
1534
f049052b 1535 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Trying LEAP auth");
cb1583f6
SO		 1536 wpa_supplicant_associate(wpa_s, wpa_s->current_bss,
1537 wpa_s->current_ssid);
1538 return;
1539
1540 default:
1541 return;
1542 }
c2a04078
JM		 1543 }
1544
1545#ifdef CONFIG_IEEE80211R
1546 if (data->auth.auth_type == WLAN_AUTH_FT) {
c6c41f6e
JM		 1547 const u8 *ric_ies = NULL;
1548 size_t ric_ies_len = 0;
1549
1550 if (wpa_s->ric_ies) {
1551 ric_ies = wpabuf_head(wpa_s->ric_ies);
1552 ric_ies_len = wpabuf_len(wpa_s->ric_ies);
1553 }
ee140ef9
JM		 1554 if (wpa_ft_process_response(wpa_s->wpa, data->auth.ies,
1555 data->auth.ies_len, 0,
c6c41f6e
JM		 1556 data->auth.peer,
1557 ric_ies, ric_ies_len) < 0) {
ee140ef9
JM		 1558 wpa_dbg(wpa_s, MSG_DEBUG,
1559 "SME: FT Authentication response processing failed");
1560 wpa_msg(wpa_s, MSG_INFO, WPA_EVENT_DISCONNECTED "bssid="
1561 MACSTR
1562 " reason=%d locally_generated=1",
1563 MAC2STR(wpa_s->pending_bssid),
1564 WLAN_REASON_DEAUTH_LEAVING);
1565 wpas_connection_failed(wpa_s, wpa_s->pending_bssid);
1566 wpa_supplicant_mark_disassoc(wpa_s);
1567 return;
1568 }
c2a04078
JM		 1569 }
1570#endif /* CONFIG_IEEE80211R */
1571
a6609937 1572#ifdef CONFIG_FILS
76e20f4f
JM		 1573 if (data->auth.auth_type == WLAN_AUTH_FILS_SK ||
1574 data->auth.auth_type == WLAN_AUTH_FILS_SK_PFS) {
1575 u16 expect_auth_type;
1576
1577 expect_auth_type = wpa_s->sme.auth_alg ==
1578 WPA_AUTH_ALG_FILS_SK_PFS ? WLAN_AUTH_FILS_SK_PFS :
1579 WLAN_AUTH_FILS_SK;
1580 if (data->auth.auth_type != expect_auth_type) {
1581 wpa_dbg(wpa_s, MSG_DEBUG,
1582 "SME: FILS Authentication response used different auth alg (%u; expected %u)",
1583 data->auth.auth_type, expect_auth_type);
1584 wpa_msg(wpa_s, MSG_INFO, WPA_EVENT_DISCONNECTED "bssid="
1585 MACSTR
1586 " reason=%d locally_generated=1",
1587 MAC2STR(wpa_s->pending_bssid),
1588 WLAN_REASON_DEAUTH_LEAVING);
1589 wpas_connection_failed(wpa_s, wpa_s->pending_bssid);
1590 wpa_supplicant_mark_disassoc(wpa_s);
1591 return;
1592 }
1593
ba9774bd
JM		 1594 if (fils_process_auth(wpa_s->wpa, wpa_s->pending_bssid,
1595 data->auth.ies, data->auth.ies_len) < 0) {
a6609937
JM		 1596 wpa_dbg(wpa_s, MSG_DEBUG,
1597 "SME: FILS Authentication response processing failed");
1598 wpa_msg(wpa_s, MSG_INFO, WPA_EVENT_DISCONNECTED "bssid="
1599 MACSTR
1600 " reason=%d locally_generated=1",
1601 MAC2STR(wpa_s->pending_bssid),
1602 WLAN_REASON_DEAUTH_LEAVING);
1603 wpas_connection_failed(wpa_s, wpa_s->pending_bssid);
1604 wpa_supplicant_mark_disassoc(wpa_s);
1605 return;
1606 }
1607 }
1608#endif /* CONFIG_FILS */
1609
71024cb2
JM		 1610 sme_associate(wpa_s, ssid->mode, data->auth.peer,
1611 data->auth.auth_type);
1612}
1613
1614
7d440a3b
JM		 1615#ifdef CONFIG_IEEE80211R
1616static void remove_ie(u8 *buf, size_t *len, u8 eid)
1617{
1618 u8 *pos, *next, *end;
1619
1620 pos = (u8 *) get_ie(buf, *len, eid);
1621 if (pos) {
1622 next = pos + 2 + pos[1];
1623 end = buf + *len;
1624 *len -= 2 + pos[1];
1625 os_memmove(pos, next, end - next);
1626 }
1627}
1628#endif /* CONFIG_IEEE80211R */
1629
1630
71024cb2
JM		 1631void sme_associate(struct wpa_supplicant *wpa_s, enum wpas_mode mode,
1632 const u8 *bssid, u16 auth_type)
1633{
1634 struct wpa_driver_associate_params params;
d9a27b04 1635 struct ieee802_11_elems elems;
86cd6928
JM		 1636#ifdef CONFIG_FILS
1637 u8 nonces[2 * FILS_NONCE_LEN];
1638#endif /* CONFIG_FILS */
80e8a5ee
BG		 1639#ifdef CONFIG_HT_OVERRIDES
1640 struct ieee80211_ht_capabilities htcaps;
1641 struct ieee80211_ht_capabilities htcaps_mask;
1642#endif /* CONFIG_HT_OVERRIDES */
e9ee8dc3
JB		 1643#ifdef CONFIG_VHT_OVERRIDES
1644 struct ieee80211_vht_capabilities vhtcaps;
1645 struct ieee80211_vht_capabilities vhtcaps_mask;
1646#endif /* CONFIG_VHT_OVERRIDES */
71024cb2 1647
c2a04078 1648 os_memset(&params, 0, sizeof(params));
86cd6928
JM		 1649
1650#ifdef CONFIG_FILS
76e20f4f
JM		 1651 if (auth_type == WLAN_AUTH_FILS_SK ||
1652 auth_type == WLAN_AUTH_FILS_SK_PFS) {
86cd6928
JM		 1653 struct wpabuf *buf;
1654 const u8 *snonce, *anonce;
5732b770
JM		 1655 const unsigned int max_hlp = 20;
1656 struct wpabuf *hlp[max_hlp];
1657 unsigned int i, num_hlp = 0;
1658 struct fils_hlp_req *req;
1659
1660 dl_list_for_each(req, &wpa_s->fils_hlp_req, struct fils_hlp_req,
1661 list) {
1662 hlp[num_hlp] = wpabuf_alloc(2 * ETH_ALEN + 6 +
1663 wpabuf_len(req->pkt));
1664 if (!hlp[num_hlp])
1665 break;
1666 wpabuf_put_data(hlp[num_hlp], req->dst, ETH_ALEN);
1667 wpabuf_put_data(hlp[num_hlp], wpa_s->own_addr,
1668 ETH_ALEN);
1669 wpabuf_put_data(hlp[num_hlp],
1670 "\xaa\xaa\x03\x00\x00\x00", 6);
1671 wpabuf_put_buf(hlp[num_hlp], req->pkt);
1672 num_hlp++;
1673 if (num_hlp >= max_hlp)
1674 break;
1675 }
86cd6928
JM		 1676
1677 buf = fils_build_assoc_req(wpa_s->wpa, &params.fils_kek,
1678 &params.fils_kek_len, &snonce,
5732b770
JM		 1679 &anonce,
1680 (const struct wpabuf **) hlp,
1681 num_hlp);
1682 for (i = 0; i < num_hlp; i++)
1683 wpabuf_free(hlp[i]);
86cd6928
JM		 1684 if (!buf)
1685 return;
7d440a3b
JM		 1686 wpa_hexdump(MSG_DEBUG, "FILS: assoc_req before FILS elements",
1687 wpa_s->sme.assoc_req_ie,
1688 wpa_s->sme.assoc_req_ie_len);
1689#ifdef CONFIG_IEEE80211R
1690 if (wpa_key_mgmt_ft(wpa_s->key_mgmt)) {
1691 /* Remove RSNE and MDE to allow them to be overridden
1692 * with FILS+FT specific values from
1693 * fils_build_assoc_req(). */
1694 remove_ie(wpa_s->sme.assoc_req_ie,
1695 &wpa_s->sme.assoc_req_ie_len,
1696 WLAN_EID_RSN);
1697 wpa_hexdump(MSG_DEBUG,
1698 "FILS: assoc_req after RSNE removal",
1699 wpa_s->sme.assoc_req_ie,
1700 wpa_s->sme.assoc_req_ie_len);
1701 remove_ie(wpa_s->sme.assoc_req_ie,
1702 &wpa_s->sme.assoc_req_ie_len,
1703 WLAN_EID_MOBILITY_DOMAIN);
1704 wpa_hexdump(MSG_DEBUG,
1705 "FILS: assoc_req after MDE removal",
1706 wpa_s->sme.assoc_req_ie,
1707 wpa_s->sme.assoc_req_ie_len);
1708 }
1709#endif /* CONFIG_IEEE80211R */
86cd6928
JM		 1710 /* TODO: Make wpa_s->sme.assoc_req_ie use dynamic allocation */
1711 if (wpa_s->sme.assoc_req_ie_len + wpabuf_len(buf) >
1712 sizeof(wpa_s->sme.assoc_req_ie)) {
1713 wpa_printf(MSG_ERROR,
1714 "FILS: Not enough buffer room for own AssocReq elements");
1715 wpabuf_free(buf);
1716 return;
1717 }
1718 os_memcpy(wpa_s->sme.assoc_req_ie + wpa_s->sme.assoc_req_ie_len,
1719 wpabuf_head(buf), wpabuf_len(buf));
1720 wpa_s->sme.assoc_req_ie_len += wpabuf_len(buf);
1721 wpabuf_free(buf);
7d440a3b
JM		 1722 wpa_hexdump(MSG_DEBUG, "FILS: assoc_req after FILS elements",
1723 wpa_s->sme.assoc_req_ie,
1724 wpa_s->sme.assoc_req_ie_len);
86cd6928
JM		 1725
1726 os_memcpy(nonces, snonce, FILS_NONCE_LEN);
1727 os_memcpy(nonces + FILS_NONCE_LEN, anonce, FILS_NONCE_LEN);
1728 params.fils_nonces = nonces;
1729 params.fils_nonces_len = sizeof(nonces);
1730 }
1731#endif /* CONFIG_FILS */
1732
0a614799 1733#ifdef CONFIG_OWE
265bda34
JM		 1734#ifdef CONFIG_TESTING_OPTIONS
1735 if (get_ie_ext(wpa_s->sme.assoc_req_ie, wpa_s->sme.assoc_req_ie_len,
1736 WLAN_EID_EXT_OWE_DH_PARAM)) {
1737 wpa_printf(MSG_INFO, "TESTING: Override OWE DH element");
1738 } else
1739#endif /* CONFIG_TESTING_OPTIONS */
0a614799
JM		 1740 if (auth_type == WLAN_AUTH_OPEN &&
1741 wpa_s->key_mgmt == WPA_KEY_MGMT_OWE) {
1742 struct wpabuf *owe_ie;
2cb40e9f 1743 u16 group;
0a614799 1744
2cb40e9f 1745 if (wpa_s->current_ssid && wpa_s->current_ssid->owe_group) {
ec9f4837 1746 group = wpa_s->current_ssid->owe_group;
698c9e20
AK		 1747 } else if (wpa_s->assoc_status_code ==
1748 WLAN_STATUS_FINITE_CYCLIC_GROUP_NOT_SUPPORTED) {
2cb40e9f
JM		 1749 if (wpa_s->last_owe_group == 19)
1750 group = 20;
1751 else if (wpa_s->last_owe_group == 20)
1752 group = 21;
1753 else
1754 group = OWE_DH_GROUP;
698c9e20
AK		 1755 } else {
1756 group = OWE_DH_GROUP;
2cb40e9f 1757 }
698c9e20 1758
2cb40e9f
JM		 1759 wpa_s->last_owe_group = group;
1760 wpa_printf(MSG_DEBUG, "OWE: Try to use group %u", group);
ec9f4837 1761 owe_ie = owe_build_assoc_req(wpa_s->wpa, group);
0a614799
JM		 1762 if (!owe_ie) {
1763 wpa_printf(MSG_ERROR,
1764 "OWE: Failed to build IE for Association Request frame");
1765 return;
1766 }
1767 if (wpa_s->sme.assoc_req_ie_len + wpabuf_len(owe_ie) >
1768 sizeof(wpa_s->sme.assoc_req_ie)) {
1769 wpa_printf(MSG_ERROR,
1770 "OWE: Not enough buffer room for own Association Request frame elements");
1771 wpabuf_free(owe_ie);
1772 return;
1773 }
1774 os_memcpy(wpa_s->sme.assoc_req_ie + wpa_s->sme.assoc_req_ie_len,
1775 wpabuf_head(owe_ie), wpabuf_len(owe_ie));
1776 wpa_s->sme.assoc_req_ie_len += wpabuf_len(owe_ie);
1777 wpabuf_free(owe_ie);
1778 }
1779#endif /* CONFIG_OWE */
1780
10ec6a5f
JM		 1781#ifdef CONFIG_DPP2
1782 if (wpa_s->key_mgmt == WPA_KEY_MGMT_DPP && wpa_s->current_ssid &&
1783 wpa_s->current_ssid->dpp_netaccesskey) {
1784 struct wpa_ssid *ssid = wpa_s->current_ssid;
1785
1786 dpp_pfs_free(wpa_s->dpp_pfs);
1787 wpa_s->dpp_pfs = dpp_pfs_init(ssid->dpp_netaccesskey,
1788 ssid->dpp_netaccesskey_len);
1789 if (!wpa_s->dpp_pfs) {
1790 wpa_printf(MSG_DEBUG, "DPP: Could not initialize PFS");
1791 /* Try to continue without PFS */
1792 goto pfs_fail;
1793 }
1794 if (wpa_s->sme.assoc_req_ie_len +
1795 wpabuf_len(wpa_s->dpp_pfs->ie) >
1796 sizeof(wpa_s->sme.assoc_req_ie)) {
1797 wpa_printf(MSG_ERROR,
1798 "DPP: Not enough buffer room for own Association Request frame elements");
1799 dpp_pfs_free(wpa_s->dpp_pfs);
1800 wpa_s->dpp_pfs = NULL;
1801 goto pfs_fail;
1802 }
1803 os_memcpy(wpa_s->sme.assoc_req_ie + wpa_s->sme.assoc_req_ie_len,
1804 wpabuf_head(wpa_s->dpp_pfs->ie),
1805 wpabuf_len(wpa_s->dpp_pfs->ie));
1806 wpa_s->sme.assoc_req_ie_len += wpabuf_len(wpa_s->dpp_pfs->ie);
1807 }
1808pfs_fail:
1809#endif /* CONFIG_DPP2 */
1810
5abc7823
VN		 1811 if (wpa_s->current_ssid && wpa_s->current_ssid->multi_ap_backhaul_sta) {
1812 size_t multi_ap_ie_len;
1813
1814 multi_ap_ie_len = add_multi_ap_ie(
1815 wpa_s->sme.assoc_req_ie + wpa_s->sme.assoc_req_ie_len,
1816 sizeof(wpa_s->sme.assoc_req_ie) -
1817 wpa_s->sme.assoc_req_ie_len,
1818 MULTI_AP_BACKHAUL_STA);
1819 if (multi_ap_ie_len == 0) {
1820 wpa_printf(MSG_ERROR,
1821 "Multi-AP: Failed to build Multi-AP IE");
1822 return;
1823 }
1824 wpa_s->sme.assoc_req_ie_len += multi_ap_ie_len;
1825 }
1826
71024cb2 1827 params.bssid = bssid;
c2a04078
JM		 1828 params.ssid = wpa_s->sme.ssid;
1829 params.ssid_len = wpa_s->sme.ssid_len;
4ec68377 1830 params.freq.freq = wpa_s->sme.freq;
1f6c0ab8
BS		 1831 params.bg_scan_period = wpa_s->current_ssid ?
1832 wpa_s->current_ssid->bg_scan_period : -1;
c2a04078
JM		 1833 params.wpa_ie = wpa_s->sme.assoc_req_ie_len ?
1834 wpa_s->sme.assoc_req_ie : NULL;
1835 params.wpa_ie_len = wpa_s->sme.assoc_req_ie_len;
8c41734e
JM		 1836 wpa_hexdump(MSG_DEBUG, "SME: Association Request IEs",
1837 params.wpa_ie, params.wpa_ie_len);
4848a38d
JM		 1838 params.pairwise_suite = wpa_s->pairwise_cipher;
1839 params.group_suite = wpa_s->group_cipher;
61a56c14 1840 params.mgmt_group_suite = wpa_s->mgmt_group_cipher;
163f801e
JM		 1841 params.key_mgmt_suite = wpa_s->key_mgmt;
1842 params.wpa_proto = wpa_s->wpa_proto;
80e8a5ee
BG		 1843#ifdef CONFIG_HT_OVERRIDES
1844 os_memset(&htcaps, 0, sizeof(htcaps));
1845 os_memset(&htcaps_mask, 0, sizeof(htcaps_mask));
1846 params.htcaps = (u8 *) &htcaps;
1847 params.htcaps_mask = (u8 *) &htcaps_mask;
1848 wpa_supplicant_apply_ht_overrides(wpa_s, wpa_s->current_ssid, &params);
1849#endif /* CONFIG_HT_OVERRIDES */
e9ee8dc3
JB		 1850#ifdef CONFIG_VHT_OVERRIDES
1851 os_memset(&vhtcaps, 0, sizeof(vhtcaps));
1852 os_memset(&vhtcaps_mask, 0, sizeof(vhtcaps_mask));
1853 params.vhtcaps = &vhtcaps;
1854 params.vhtcaps_mask = &vhtcaps_mask;
1855 wpa_supplicant_apply_vht_overrides(wpa_s, wpa_s->current_ssid, &params);
1856#endif /* CONFIG_VHT_OVERRIDES */
c2a04078 1857#ifdef CONFIG_IEEE80211R
8c41734e
JM		 1858 if (auth_type == WLAN_AUTH_FT && wpa_s->sme.ft_ies &&
1859 get_ie(wpa_s->sme.ft_ies, wpa_s->sme.ft_ies_len,
1860 WLAN_EID_RIC_DATA)) {
1861 /* There seems to be a pretty inconvenient bug in the Linux
1862 * kernel IE splitting functionality when RIC is used. For now,
1863 * skip correct behavior in IE construction here (i.e., drop the
1864 * additional non-FT-specific IEs) to avoid kernel issues. This
1865 * is fine since RIC is used only for testing purposes in the
1866 * current implementation. */
1867 wpa_printf(MSG_INFO,
1868 "SME: Linux kernel workaround - do not try to include additional IEs with RIC");
c2a04078
JM		 1869 params.wpa_ie = wpa_s->sme.ft_ies;
1870 params.wpa_ie_len = wpa_s->sme.ft_ies_len;
8c41734e
JM		 1871 } else if (auth_type == WLAN_AUTH_FT && wpa_s->sme.ft_ies) {
1872 const u8 *rm_en, *pos, *end;
1873 size_t rm_en_len = 0;
1874 u8 *rm_en_dup = NULL, *wpos;
1875
1876 /* Remove RSNE, MDE, FTE to allow them to be overridden with
1877 * FT specific values */
1878 remove_ie(wpa_s->sme.assoc_req_ie,
1879 &wpa_s->sme.assoc_req_ie_len,
1880 WLAN_EID_RSN);
1881 remove_ie(wpa_s->sme.assoc_req_ie,
1882 &wpa_s->sme.assoc_req_ie_len,
1883 WLAN_EID_MOBILITY_DOMAIN);
1884 remove_ie(wpa_s->sme.assoc_req_ie,
1885 &wpa_s->sme.assoc_req_ie_len,
1886 WLAN_EID_FAST_BSS_TRANSITION);
1887 rm_en = get_ie(wpa_s->sme.assoc_req_ie,
1888 wpa_s->sme.assoc_req_ie_len,
1889 WLAN_EID_RRM_ENABLED_CAPABILITIES);
1890 if (rm_en) {
1891 /* Need to remove RM Enabled Capabilities element as
1892 * well temporarily, so that it can be placed between
1893 * RSNE and MDE. */
1894 rm_en_len = 2 + rm_en[1];
1895 rm_en_dup = os_memdup(rm_en, rm_en_len);
1896 remove_ie(wpa_s->sme.assoc_req_ie,
1897 &wpa_s->sme.assoc_req_ie_len,
1898 WLAN_EID_RRM_ENABLED_CAPABILITIES);
1899 }
1900 wpa_hexdump(MSG_DEBUG,
1901 "SME: Association Request IEs after FT IE removal",
1902 wpa_s->sme.assoc_req_ie,
1903 wpa_s->sme.assoc_req_ie_len);
1904 if (wpa_s->sme.assoc_req_ie_len + wpa_s->sme.ft_ies_len +
1905 rm_en_len > sizeof(wpa_s->sme.assoc_req_ie)) {
1906 wpa_printf(MSG_ERROR,
1907 "SME: Not enough buffer room for FT IEs in Association Request frame");
1908 os_free(rm_en_dup);
1909 return;
1910 }
1911
1912 os_memmove(wpa_s->sme.assoc_req_ie + wpa_s->sme.ft_ies_len +
1913 rm_en_len,
1914 wpa_s->sme.assoc_req_ie,
1915 wpa_s->sme.assoc_req_ie_len);
1916 pos = wpa_s->sme.ft_ies;
1917 end = pos + wpa_s->sme.ft_ies_len;
1918 wpos = wpa_s->sme.assoc_req_ie;
1919 if (*pos == WLAN_EID_RSN) {
1920 os_memcpy(wpos, pos, 2 + pos[1]);
1921 wpos += 2 + pos[1];
1922 pos += 2 + pos[1];
1923 }
1924 if (rm_en_dup) {
1925 os_memcpy(wpos, rm_en_dup, rm_en_len);
1926 wpos += rm_en_len;
1927 os_free(rm_en_dup);
1928 }
1929 os_memcpy(wpos, pos, end - pos);
1930 wpa_s->sme.assoc_req_ie_len += wpa_s->sme.ft_ies_len +
1931 rm_en_len;
1932 params.wpa_ie = wpa_s->sme.assoc_req_ie;
1933 params.wpa_ie_len = wpa_s->sme.assoc_req_ie_len;
1934 wpa_hexdump(MSG_DEBUG,
1935 "SME: Association Request IEs after FT override",
1936 params.wpa_ie, params.wpa_ie_len);
c2a04078
JM		 1937 }
1938#endif /* CONFIG_IEEE80211R */
71024cb2 1939 params.mode = mode;
c2a04078 1940 params.mgmt_frame_protection = wpa_s->sme.mfp;
b361d580 1941 params.rrm_used = wpa_s->rrm.rrm_used;
62fa124c
JM		 1942 if (wpa_s->sme.prev_bssid_set)
1943 params.prev_bssid = wpa_s->sme.prev_bssid;
c2a04078
JM		 1944
1945 wpa_msg(wpa_s, MSG_INFO, "Trying to associate with " MACSTR
1946 " (SSID='%s' freq=%d MHz)", MAC2STR(params.bssid),
1947 params.ssid ? wpa_ssid_txt(params.ssid, params.ssid_len) : "",
4ec68377 1948 params.freq.freq);
c2a04078
JM		 1949
1950 wpa_supplicant_set_state(wpa_s, WPA_ASSOCIATING);
1951
9efc3f2a
JM		 1952 if (params.wpa_ie == NULL ||
1953 ieee802_11_parse_elems(params.wpa_ie, params.wpa_ie_len, &elems, 0)
d9a27b04 1954 < 0) {
f049052b 1955 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Could not parse own IEs?!");
d9a27b04
JM		 1956 os_memset(&elems, 0, sizeof(elems));
1957 }
64fa840a
JM		 1958 if (elems.rsn_ie) {
1959 params.wpa_proto = WPA_PROTO_RSN;
d9a27b04
JM		 1960 wpa_sm_set_assoc_wpa_ie(wpa_s->wpa, elems.rsn_ie - 2,
1961 elems.rsn_ie_len + 2);
64fa840a
JM		 1962 } else if (elems.wpa_ie) {
1963 params.wpa_proto = WPA_PROTO_WPA;
d9a27b04
JM		 1964 wpa_sm_set_assoc_wpa_ie(wpa_s->wpa, elems.wpa_ie - 2,
1965 elems.wpa_ie_len + 2);
df0f01d9
JM		 1966 } else if (elems.osen) {
1967 params.wpa_proto = WPA_PROTO_OSEN;
1968 wpa_sm_set_assoc_wpa_ie(wpa_s->wpa, elems.osen - 2,
1969 elems.osen_len + 2);
64fa840a 1970 } else
d9a27b04 1971 wpa_sm_set_assoc_wpa_ie(wpa_s->wpa, NULL, 0);
6d6c8877
JM		 1972 if (elems.rsnxe)
1973 wpa_sm_set_assoc_rsnxe(wpa_s->wpa, elems.rsnxe - 2,
1974 elems.rsnxe_len + 2);
1975 else
1976 wpa_sm_set_assoc_rsnxe(wpa_s->wpa, NULL, 0);
ffad8858 1977 if (wpa_s->current_ssid && wpa_s->current_ssid->p2p_group)
6e3f4b89 1978 params.p2p = 1;
d9a27b04 1979
ba307f85
LD		 1980 if (wpa_s->p2pdev->set_sta_uapsd)
1981 params.uapsd = wpa_s->p2pdev->sta_uapsd;
eea2fd9e
JM		 1982 else
1983 params.uapsd = -1;
1984
c2a04078 1985 if (wpa_drv_associate(wpa_s, &params) < 0) {
f049052b
BG		 1986 wpa_msg(wpa_s, MSG_INFO, "SME: Association request to the "
1987 "driver failed");
e5ad96b7 1988 wpas_connection_failed(wpa_s, wpa_s->pending_bssid);
c1c02342 1989 wpa_supplicant_set_state(wpa_s, WPA_DISCONNECTED);
e5ad96b7 1990 os_memset(wpa_s->pending_bssid, 0, ETH_ALEN);
c2a04078
JM		 1991 return;
1992 }
1993
e29853bb
BG		 1994 eloop_register_timeout(SME_ASSOC_TIMEOUT, 0, sme_assoc_timer, wpa_s,
1995 NULL);
daa40960
JM		 1996
1997#ifdef CONFIG_TESTING_OPTIONS
1998 wpabuf_free(wpa_s->last_assoc_req_wpa_ie);
1999 wpa_s->last_assoc_req_wpa_ie = NULL;
2000 if (params.wpa_ie)
2001 wpa_s->last_assoc_req_wpa_ie =
2002 wpabuf_alloc_copy(params.wpa_ie, params.wpa_ie_len);
2003#endif /* CONFIG_TESTING_OPTIONS */
c2a04078
JM		 2004}
2005
2006
2007int sme_update_ft_ies(struct wpa_supplicant *wpa_s, const u8 *md,
2008 const u8 *ies, size_t ies_len)
2009{
2010 if (md == NULL || ies == NULL) {
f049052b 2011 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Remove mobility domain");
c2a04078
JM		 2012 os_free(wpa_s->sme.ft_ies);
2013 wpa_s->sme.ft_ies = NULL;
2014 wpa_s->sme.ft_ies_len = 0;
2015 wpa_s->sme.ft_used = 0;
2016 return 0;
2017 }
2018
2019 os_memcpy(wpa_s->sme.mobility_domain, md, MOBILITY_DOMAIN_ID_LEN);
2020 wpa_hexdump(MSG_DEBUG, "SME: FT IEs", ies, ies_len);
2021 os_free(wpa_s->sme.ft_ies);
a1f11e34 2022 wpa_s->sme.ft_ies = os_memdup(ies, ies_len);
c2a04078
JM		 2023 if (wpa_s->sme.ft_ies == NULL)
2024 return -1;
c2a04078
JM		 2025 wpa_s->sme.ft_ies_len = ies_len;
2026 return 0;
2027}
efa46078
JM		 2028
2029
e29853bb 2030static void sme_deauth(struct wpa_supplicant *wpa_s)
efa46078 2031{
8bac466b
JM		 2032 int bssid_changed;
2033
8bac466b 2034 bssid_changed = !is_zero_ether_addr(wpa_s->bssid);
76d11d3f 2035
76d11d3f
JM		 2036 if (wpa_drv_deauthenticate(wpa_s, wpa_s->pending_bssid,
2037 WLAN_REASON_DEAUTH_LEAVING) < 0) {
f049052b
BG		 2038 wpa_msg(wpa_s, MSG_INFO, "SME: Deauth request to the driver "
2039 "failed");
76d11d3f 2040 }
62fa124c 2041 wpa_s->sme.prev_bssid_set = 0;
76d11d3f 2042
0fb337c1 2043 wpas_connection_failed(wpa_s, wpa_s->pending_bssid);
76d11d3f 2044 wpa_supplicant_set_state(wpa_s, WPA_DISCONNECTED);
efa46078
JM		 2045 os_memset(wpa_s->bssid, 0, ETH_ALEN);
2046 os_memset(wpa_s->pending_bssid, 0, ETH_ALEN);
8bac466b
JM		 2047 if (bssid_changed)
2048 wpas_notify_bssid_changed(wpa_s);
efa46078 2049}
da1fb17c
JM		 2050
2051
e29853bb
BG		 2052void sme_event_assoc_reject(struct wpa_supplicant *wpa_s,
2053 union wpa_event_data *data)
2054{
2055 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Association with " MACSTR " failed: "
2056 "status code %d", MAC2STR(wpa_s->pending_bssid),
2057 data->assoc_reject.status_code);
2058
2059 eloop_cancel_timeout(sme_assoc_timer, wpa_s, NULL);
2060
bc26ac50
JM		 2061#ifdef CONFIG_SAE
2062 if (wpa_s->sme.sae_pmksa_caching && wpa_s->current_ssid &&
2063 wpa_key_mgmt_sae(wpa_s->current_ssid->key_mgmt)) {
2064 wpa_dbg(wpa_s, MSG_DEBUG,
2065 "PMKSA caching attempt rejected - drop PMKSA cache entry and fall back to SAE authentication");
2066 wpa_sm_aborted_cached(wpa_s->wpa);
2067 wpa_sm_pmksa_cache_flush(wpa_s->wpa, wpa_s->current_ssid);
2068 if (wpa_s->current_bss) {
2069 struct wpa_bss *bss = wpa_s->current_bss;
2070 struct wpa_ssid *ssid = wpa_s->current_ssid;
2071
2072 wpa_drv_deauthenticate(wpa_s, wpa_s->pending_bssid,
2073 WLAN_REASON_DEAUTH_LEAVING);
2074 wpas_connect_work_done(wpa_s);
2075 wpa_supplicant_mark_disassoc(wpa_s);
2076 wpa_supplicant_connect(wpa_s, bss, ssid);
2077 return;
2078 }
2079 }
2080#endif /* CONFIG_SAE */
2081
e29853bb
BG		 2082 /*
2083 * For now, unconditionally terminate the previous authentication. In
2084 * theory, this should not be needed, but mac80211 gets quite confused
2085 * if the authentication is left pending.. Some roaming cases might
2086 * benefit from using the previous authentication, so this could be
2087 * optimized in the future.
2088 */
2089 sme_deauth(wpa_s);
2090}
2091
2092
da1fb17c
JM		 2093void sme_event_auth_timed_out(struct wpa_supplicant *wpa_s,
2094 union wpa_event_data *data)
2095{
f049052b 2096 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Authentication timed out");
0fb337c1 2097 wpas_connection_failed(wpa_s, wpa_s->pending_bssid);
1193dc8f 2098 wpa_supplicant_mark_disassoc(wpa_s);
da1fb17c
JM		 2099}
2100
2101
2102void sme_event_assoc_timed_out(struct wpa_supplicant *wpa_s,
2103 union wpa_event_data *data)
2104{
f049052b 2105 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Association timed out");
0fb337c1 2106 wpas_connection_failed(wpa_s, wpa_s->pending_bssid);
da1fb17c 2107 wpa_supplicant_mark_disassoc(wpa_s);
da1fb17c 2108}
a84ed99e
JM		 2109
2110
2111void sme_event_disassoc(struct wpa_supplicant *wpa_s,
d7df0fa7 2112 struct disassoc_info *info)
a84ed99e 2113{
f049052b 2114 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Disassociation event received");
17fbb751 2115 if (wpa_s->sme.prev_bssid_set) {
a84ed99e
JM		 2116 /*
2117 * cfg80211/mac80211 can get into somewhat confused state if
2118 * the AP only disassociates us and leaves us in authenticated
2119 * state. For now, force the state to be cleared to avoid
2120 * confusing errors if we try to associate with the AP again.
2121 */
f049052b
BG		 2122 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Deauthenticate to clear "
2123 "driver state");
7e26053a 2124 wpa_drv_deauthenticate(wpa_s, wpa_s->sme.prev_bssid,
a84ed99e
JM		 2125 WLAN_REASON_DEAUTH_LEAVING);
2126 }
2127}
7d878ca7
JM		 2128
2129
e29853bb
BG		 2130static void sme_auth_timer(void *eloop_ctx, void *timeout_ctx)
2131{
2132 struct wpa_supplicant *wpa_s = eloop_ctx;
2133 if (wpa_s->wpa_state == WPA_AUTHENTICATING) {
2134 wpa_msg(wpa_s, MSG_DEBUG, "SME: Authentication timeout");
2135 sme_deauth(wpa_s);
2136 }
2137}
2138
2139
2140static void sme_assoc_timer(void *eloop_ctx, void *timeout_ctx)
2141{
2142 struct wpa_supplicant *wpa_s = eloop_ctx;
2143 if (wpa_s->wpa_state == WPA_ASSOCIATING) {
2144 wpa_msg(wpa_s, MSG_DEBUG, "SME: Association timeout");
2145 sme_deauth(wpa_s);
2146 }
2147}
2148
2149
2150void sme_state_changed(struct wpa_supplicant *wpa_s)
2151{
2152 /* Make sure timers are cleaned up appropriately. */
2153 if (wpa_s->wpa_state != WPA_ASSOCIATING)
2154 eloop_cancel_timeout(sme_assoc_timer, wpa_s, NULL);
2155 if (wpa_s->wpa_state != WPA_AUTHENTICATING)
2156 eloop_cancel_timeout(sme_auth_timer, wpa_s, NULL);
2157}
2158
2159
2160void sme_disassoc_while_authenticating(struct wpa_supplicant *wpa_s,
2161 const u8 *prev_pending_bssid)
2162{
2163 /*
2164 * mac80211-workaround to force deauth on failed auth cmd,
2165 * requires us to remain in authenticating state to allow the
2166 * second authentication attempt to be continued properly.
2167 */
2168 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Allow pending authentication "
2169 "to proceed after disconnection event");
2170 wpa_supplicant_set_state(wpa_s, WPA_AUTHENTICATING);
2171 os_memcpy(wpa_s->pending_bssid, prev_pending_bssid, ETH_ALEN);
2172
2173 /*
2174 * Re-arm authentication timer in case auth fails for whatever reason.
2175 */
2176 eloop_cancel_timeout(sme_auth_timer, wpa_s, NULL);
2177 eloop_register_timeout(SME_AUTH_TIMEOUT, 0, sme_auth_timer, wpa_s,
2178 NULL);
2179}
2180
2181
4e70bbf1
JM		 2182void sme_clear_on_disassoc(struct wpa_supplicant *wpa_s)
2183{
2184 wpa_s->sme.prev_bssid_set = 0;
2185#ifdef CONFIG_SAE
2186 wpabuf_free(wpa_s->sme.sae_token);
2187 wpa_s->sme.sae_token = NULL;
2188 sae_clear_data(&wpa_s->sme.sae);
2189#endif /* CONFIG_SAE */
2190#ifdef CONFIG_IEEE80211R
60a5737e 2191 if (wpa_s->sme.ft_ies || wpa_s->sme.ft_used)
4e70bbf1
JM		 2192 sme_update_ft_ies(wpa_s, NULL, NULL, 0);
2193#endif /* CONFIG_IEEE80211R */
01ac337b 2194 sme_stop_sa_query(wpa_s);
4e70bbf1
JM		 2195}
2196
2197
e29853bb
BG		 2198void sme_deinit(struct wpa_supplicant *wpa_s)
2199{
4e70bbf1 2200 sme_clear_on_disassoc(wpa_s);
447cd5f2
JM		 2201#ifdef CONFIG_SAE
2202 os_free(wpa_s->sme.sae_rejected_groups);
2203 wpa_s->sme.sae_rejected_groups = NULL;
2204#endif /* CONFIG_SAE */
e29853bb
BG		 2205
2206 eloop_cancel_timeout(sme_assoc_timer, wpa_s, NULL);
2207 eloop_cancel_timeout(sme_auth_timer, wpa_s, NULL);
c3701c66
RM		 2208 eloop_cancel_timeout(sme_obss_scan_timeout, wpa_s, NULL);
2209}
2210
2211
2212static void sme_send_2040_bss_coex(struct wpa_supplicant *wpa_s,
2213 const u8 *chan_list, u8 num_channels,
2214 u8 num_intol)
2215{
2216 struct ieee80211_2040_bss_coex_ie *bc_ie;
2217 struct ieee80211_2040_intol_chan_report *ic_report;
2218 struct wpabuf *buf;
2219
31ded52e
JM		 2220 wpa_printf(MSG_DEBUG, "SME: Send 20/40 BSS Coexistence to " MACSTR
2221 " (num_channels=%u num_intol=%u)",
2222 MAC2STR(wpa_s->bssid), num_channels, num_intol);
2223 wpa_hexdump(MSG_DEBUG, "SME: 20/40 BSS Intolerant Channels",
2224 chan_list, num_channels);
c3701c66
RM		 2225
2226 buf = wpabuf_alloc(2 + /* action.category + action_code */
2227 sizeof(struct ieee80211_2040_bss_coex_ie) +
2228 sizeof(struct ieee80211_2040_intol_chan_report) +
2229 num_channels);
2230 if (buf == NULL)
2231 return;
2232
2233 wpabuf_put_u8(buf, WLAN_ACTION_PUBLIC);
2234 wpabuf_put_u8(buf, WLAN_PA_20_40_BSS_COEX);
2235
2236 bc_ie = wpabuf_put(buf, sizeof(*bc_ie));
2237 bc_ie->element_id = WLAN_EID_20_40_BSS_COEXISTENCE;
2238 bc_ie->length = 1;
2239 if (num_intol)
2240 bc_ie->coex_param |= WLAN_20_40_BSS_COEX_20MHZ_WIDTH_REQ;
2241
2242 if (num_channels > 0) {
2243 ic_report = wpabuf_put(buf, sizeof(*ic_report));
2244 ic_report->element_id = WLAN_EID_20_40_BSS_INTOLERANT;
2245 ic_report->length = num_channels + 1;
2246 ic_report->op_class = 0;
2247 os_memcpy(wpabuf_put(buf, num_channels), chan_list,
2248 num_channels);
2249 }
2250
2251 if (wpa_drv_send_action(wpa_s, wpa_s->assoc_freq, 0, wpa_s->bssid,
2252 wpa_s->own_addr, wpa_s->bssid,
2253 wpabuf_head(buf), wpabuf_len(buf), 0) < 0) {
2254 wpa_msg(wpa_s, MSG_INFO,
2255 "SME: Failed to send 20/40 BSS Coexistence frame");
2256 }
2257
2258 wpabuf_free(buf);
2259}
2260
2261
3204795d
SM		 2262int sme_proc_obss_scan(struct wpa_supplicant *wpa_s,
2263 struct wpa_scan_results *scan_res)
c3701c66 2264{
c3701c66 2265 const u8 *ie;
c3701c66
RM		 2266 u8 chan_list[P2P_MAX_CHANNELS], channel;
2267 u8 num_channels = 0, num_intol = 0, i;
3204795d
SM		 2268 size_t j;
2269 int pri_freq, sec_freq;
c3701c66
RM		 2270
2271 if (!wpa_s->sme.sched_obss_scan)
2272 return 0;
2273
2274 wpa_s->sme.sched_obss_scan = 0;
2275 if (!wpa_s->current_bss || wpa_s->wpa_state != WPA_COMPLETED)
2276 return 1;
2277
2278 /*
2279 * Check whether AP uses regulatory triplet or channel triplet in
2280 * country info. Right now the operating class of the BSS channel
2281 * width trigger event is "unknown" (IEEE Std 802.11-2012 10.15.12),
2282 * based on the assumption that operating class triplet is not used in
2283 * beacon frame. If the First Channel Number/Operating Extension
2284 * Identifier octet has a positive integer value of 201 or greater,
2285 * then its operating class triplet.
2286 *
2287 * TODO: If Supported Operating Classes element is present in beacon
2288 * frame, have to lookup operating class in Annex E and fill them in
2289 * 2040 coex frame.
2290 */
2291 ie = wpa_bss_get_ie(wpa_s->current_bss, WLAN_EID_COUNTRY);
2292 if (ie && (ie[1] >= 6) && (ie[5] >= 201))
2293 return 1;
2294
2295 os_memset(chan_list, 0, sizeof(chan_list));
2296
3204795d
SM		 2297 pri_freq = wpa_s->assoc_freq;
2298
2299 switch (wpa_s->sme.ht_sec_chan) {
2300 case HT_SEC_CHAN_ABOVE:
2301 sec_freq = pri_freq + 20;
2302 break;
2303 case HT_SEC_CHAN_BELOW:
2304 sec_freq = pri_freq - 20;
2305 break;
2306 case HT_SEC_CHAN_UNKNOWN:
2307 default:
2308 wpa_msg(wpa_s, MSG_WARNING,
2309 "Undefined secondary channel: drop OBSS scan results");
2310 return 1;
2311 }
2312
2313 for (j = 0; j < scan_res->num; j++) {
2314 struct wpa_scan_res *bss = scan_res->res[j];
e864c0ae 2315 enum hostapd_hw_mode mode;
3204795d
SM		 2316 int res;
2317
2318 /* Skip other band bss */
e864c0ae
JM		 2319 mode = ieee80211_freq_to_chan(bss->freq, &channel);
2320 if (mode != HOSTAPD_MODE_IEEE80211G &&
2321 mode != HOSTAPD_MODE_IEEE80211B)
c3701c66
RM		 2322 continue;
2323
3204795d
SM		 2324 res = check_bss_coex_40mhz(bss, pri_freq, sec_freq);
2325 if (res) {
2326 if (res == 2)
7f8eb34d
JM		 2327 num_intol++;
2328
c3701c66
RM		 2329 /* Check whether the channel is already considered */
2330 for (i = 0; i < num_channels; i++) {
2331 if (channel == chan_list[i])
2332 break;
2333 }
2334 if (i != num_channels)
2335 continue;
2336
c3701c66
RM		 2337 chan_list[num_channels++] = channel;
2338 }
2339 }
2340
2341 sme_send_2040_bss_coex(wpa_s, chan_list, num_channels, num_intol);
2342 return 1;
2343}
2344
2345
d97a3c48
JM		 2346static void wpa_obss_scan_freqs_list(struct wpa_supplicant *wpa_s,
2347 struct wpa_driver_scan_params *params)
6434ad09 2348{
d97a3c48 2349 /* Include only affected channels */
6434ad09
JM		 2350 struct hostapd_hw_modes *mode;
2351 int count, i;
d97a3c48 2352 int start, end;
6434ad09 2353
d97a3c48 2354 mode = get_mode(wpa_s->hw.modes, wpa_s->hw.num_modes,
d0e116f6 2355 HOSTAPD_MODE_IEEE80211G, 0);
6434ad09
JM		 2356 if (mode == NULL) {
2357 /* No channels supported in this band - use empty list */
2358 params->freqs = os_zalloc(sizeof(int));
2359 return;
2360 }
2361
d97a3c48
JM		 2362 if (wpa_s->sme.ht_sec_chan == HT_SEC_CHAN_UNKNOWN &&
2363 wpa_s->current_bss) {
2364 const u8 *ie;
2365
2366 ie = wpa_bss_get_ie(wpa_s->current_bss, WLAN_EID_HT_OPERATION);
2367 if (ie && ie[1] >= 2) {
2368 u8 o;
2369
2370 o = ie[3] & HT_INFO_HT_PARAM_SECONDARY_CHNL_OFF_MASK;
2371 if (o == HT_INFO_HT_PARAM_SECONDARY_CHNL_ABOVE)
2372 wpa_s->sme.ht_sec_chan = HT_SEC_CHAN_ABOVE;
2373 else if (o == HT_INFO_HT_PARAM_SECONDARY_CHNL_BELOW)
2374 wpa_s->sme.ht_sec_chan = HT_SEC_CHAN_BELOW;
2375 }
2376 }
2377
2378 start = wpa_s->assoc_freq - 10;
2379 end = wpa_s->assoc_freq + 10;
2380 switch (wpa_s->sme.ht_sec_chan) {
2381 case HT_SEC_CHAN_UNKNOWN:
2382 /* HT40+ possible on channels 1..9 */
2383 if (wpa_s->assoc_freq <= 2452)
2384 start -= 20;
2385 /* HT40- possible on channels 5-13 */
2386 if (wpa_s->assoc_freq >= 2432)
2387 end += 20;
2388 break;
2389 case HT_SEC_CHAN_ABOVE:
2390 end += 20;
2391 break;
2392 case HT_SEC_CHAN_BELOW:
2393 start -= 20;
2394 break;
2395 }
2396 wpa_printf(MSG_DEBUG,
2397 "OBSS: assoc_freq %d possible affected range %d-%d",
2398 wpa_s->assoc_freq, start, end);
2399
f9884c09 2400 params->freqs = os_calloc(mode->num_channels + 1, sizeof(int));
6434ad09
JM		 2401 if (params->freqs == NULL)
2402 return;
2403 for (count = 0, i = 0; i < mode->num_channels; i++) {
d97a3c48
JM		 2404 int freq;
2405
6434ad09
JM		 2406 if (mode->channels[i].flag & HOSTAPD_CHAN_DISABLED)
2407 continue;
d97a3c48
JM		 2408 freq = mode->channels[i].freq;
2409 if (freq - 10 >= end || freq + 10 <= start)
2410 continue; /* not affected */
2411 params->freqs[count++] = freq;
6434ad09
JM		 2412 }
2413}
2414
2415
c3701c66
RM		 2416static void sme_obss_scan_timeout(void *eloop_ctx, void *timeout_ctx)
2417{
2418 struct wpa_supplicant *wpa_s = eloop_ctx;
2419 struct wpa_driver_scan_params params;
2420
2421 if (!wpa_s->current_bss) {
2422 wpa_printf(MSG_DEBUG, "SME OBSS: Ignore scan request");
2423 return;
2424 }
2425
2426 os_memset(&params, 0, sizeof(params));
d97a3c48 2427 wpa_obss_scan_freqs_list(wpa_s, &params);
57a8f8af 2428 params.low_priority = 1;
c3701c66
RM		 2429 wpa_printf(MSG_DEBUG, "SME OBSS: Request an OBSS scan");
2430
2431 if (wpa_supplicant_trigger_scan(wpa_s, &params))
2432 wpa_printf(MSG_DEBUG, "SME OBSS: Failed to trigger scan");
2433 else
2434 wpa_s->sme.sched_obss_scan = 1;
6434ad09 2435 os_free(params.freqs);
c3701c66
RM		 2436
2437 eloop_register_timeout(wpa_s->sme.obss_scan_int, 0,
2438 sme_obss_scan_timeout, wpa_s, NULL);
2439}
2440
2441
2442void sme_sched_obss_scan(struct wpa_supplicant *wpa_s, int enable)
2443{
2444 const u8 *ie;
2445 struct wpa_bss *bss = wpa_s->current_bss;
2446 struct wpa_ssid *ssid = wpa_s->current_ssid;
b6871ebb
AN		 2447 struct hostapd_hw_modes *hw_mode = NULL;
2448 int i;
c3701c66
RM		 2449
2450 eloop_cancel_timeout(sme_obss_scan_timeout, wpa_s, NULL);
2451 wpa_s->sme.sched_obss_scan = 0;
d97a3c48 2452 wpa_s->sme.ht_sec_chan = HT_SEC_CHAN_UNKNOWN;
c3701c66
RM		 2453 if (!enable)
2454 return;
2455
368b1957
AK		 2456 /*
2457 * Schedule OBSS scan if driver is using station SME in wpa_supplicant
2458 * or it expects OBSS scan to be performed by wpa_supplicant.
2459 */
2460 if (!((wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME) ||
2461 (wpa_s->drv_flags & WPA_DRIVER_FLAGS_OBSS_SCAN)) ||
f74618cb 2462 ssid == NULL || ssid->mode != WPAS_MODE_INFRA)
368b1957 2463 return;
c3701c66 2464
b6871ebb
AN		 2465 if (!wpa_s->hw.modes)
2466 return;
2467
2468 /* only HT caps in 11g mode are relevant */
2469 for (i = 0; i < wpa_s->hw.num_modes; i++) {
2470 hw_mode = &wpa_s->hw.modes[i];
2471 if (hw_mode->mode == HOSTAPD_MODE_IEEE80211G)
2472 break;
2473 }
2474
2475 /* Driver does not support HT40 for 11g or doesn't have 11g. */
2476 if (i == wpa_s->hw.num_modes || !hw_mode ||
2477 !(hw_mode->ht_capab & HT_CAP_INFO_SUPP_CHANNEL_WIDTH_SET))
2478 return;
c3701c66
RM		 2479
2480 if (bss == NULL || bss->freq < 2400 || bss->freq > 2500)
2481 return; /* Not associated on 2.4 GHz band */
2482
2483 /* Check whether AP supports HT40 */
2484 ie = wpa_bss_get_ie(wpa_s->current_bss, WLAN_EID_HT_CAP);
2485 if (!ie || ie[1] < 2 ||
2486 !(WPA_GET_LE16(ie + 2) & HT_CAP_INFO_SUPP_CHANNEL_WIDTH_SET))
2487 return; /* AP does not support HT40 */
2488
2489 ie = wpa_bss_get_ie(wpa_s->current_bss,
2490 WLAN_EID_OVERLAPPING_BSS_SCAN_PARAMS);
2491 if (!ie || ie[1] < 14)
2492 return; /* AP does not request OBSS scans */
2493
2494 wpa_s->sme.obss_scan_int = WPA_GET_LE16(ie + 6);
2495 if (wpa_s->sme.obss_scan_int < 10) {
2496 wpa_printf(MSG_DEBUG, "SME: Invalid OBSS Scan Interval %u "
2497 "replaced with the minimum 10 sec",
2498 wpa_s->sme.obss_scan_int);
2499 wpa_s->sme.obss_scan_int = 10;
2500 }
2501 wpa_printf(MSG_DEBUG, "SME: OBSS Scan Interval %u sec",
2502 wpa_s->sme.obss_scan_int);
2503 eloop_register_timeout(wpa_s->sme.obss_scan_int, 0,
2504 sme_obss_scan_timeout, wpa_s, NULL);
e29853bb
BG		 2505}
2506
2507
7d878ca7
JM		 2508static const unsigned int sa_query_max_timeout = 1000;
2509static const unsigned int sa_query_retry_timeout = 201;
f91e68e9 2510static const unsigned int sa_query_ch_switch_max_delay = 5000; /* in usec */
7d878ca7
JM		 2511
2512static int sme_check_sa_query_timeout(struct wpa_supplicant *wpa_s)
2513{
2514 u32 tu;
46b8d4c0
JB		 2515 struct os_reltime now, passed;
2516 os_get_reltime(&now);
2517 os_reltime_sub(&now, &wpa_s->sme.sa_query_start, &passed);
7d878ca7
JM		 2518 tu = (passed.sec * 1000000 + passed.usec) / 1024;
2519 if (sa_query_max_timeout < tu) {
f049052b 2520 wpa_dbg(wpa_s, MSG_DEBUG, "SME: SA Query timed out");
7d878ca7
JM		 2521 sme_stop_sa_query(wpa_s);
2522 wpa_supplicant_deauthenticate(
2523 wpa_s, WLAN_REASON_PREV_AUTH_NOT_VALID);
2524 return 1;
2525 }
2526
2527 return 0;
2528}
2529
2530
2531static void sme_send_sa_query_req(struct wpa_supplicant *wpa_s,
2532 const u8 *trans_id)
2533{
f9da7505
MV		 2534 u8 req[2 + WLAN_SA_QUERY_TR_ID_LEN + OCV_OCI_EXTENDED_LEN];
2535 u8 req_len = 2 + WLAN_SA_QUERY_TR_ID_LEN;
2536
f049052b
BG		 2537 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Sending SA Query Request to "
2538 MACSTR, MAC2STR(wpa_s->bssid));
7d878ca7
JM		 2539 wpa_hexdump(MSG_DEBUG, "SME: SA Query Transaction ID",
2540 trans_id, WLAN_SA_QUERY_TR_ID_LEN);
2541 req[0] = WLAN_ACTION_SA_QUERY;
2542 req[1] = WLAN_SA_QUERY_REQUEST;
2543 os_memcpy(req + 2, trans_id, WLAN_SA_QUERY_TR_ID_LEN);
f9da7505
MV		 2544
2545#ifdef CONFIG_OCV
2546 if (wpa_sm_ocv_enabled(wpa_s->wpa)) {
2547 struct wpa_channel_info ci;
2548
2549 if (wpa_drv_channel_info(wpa_s, &ci) != 0) {
2550 wpa_printf(MSG_WARNING,
2551 "Failed to get channel info for OCI element in SA Query Request frame");
2552 return;
2553 }
2554
2555 if (ocv_insert_extended_oci(&ci, req + req_len) < 0)
2556 return;
2557
2558 req_len += OCV_OCI_EXTENDED_LEN;
2559 }
2560#endif /* CONFIG_OCV */
2561
190b9062 2562 if (wpa_drv_send_action(wpa_s, wpa_s->assoc_freq, 0, wpa_s->bssid,
7d878ca7 2563 wpa_s->own_addr, wpa_s->bssid,
f9da7505 2564 req, req_len, 0) < 0)
f049052b
BG		 2565 wpa_msg(wpa_s, MSG_INFO, "SME: Failed to send SA Query "
2566 "Request");
7d878ca7
JM		 2567}
2568
2569
2570static void sme_sa_query_timer(void *eloop_ctx, void *timeout_ctx)
2571{
2572 struct wpa_supplicant *wpa_s = eloop_ctx;
2573 unsigned int timeout, sec, usec;
2574 u8 *trans_id, *nbuf;
2575
2576 if (wpa_s->sme.sa_query_count > 0 &&
2577 sme_check_sa_query_timeout(wpa_s))
2578 return;
2579
067ffa26
JM		 2580 nbuf = os_realloc_array(wpa_s->sme.sa_query_trans_id,
2581 wpa_s->sme.sa_query_count + 1,
2582 WLAN_SA_QUERY_TR_ID_LEN);
f8608fab
JM		 2583 if (nbuf == NULL) {
2584 sme_stop_sa_query(wpa_s);
7d878ca7 2585 return;
f8608fab 2586 }
7d878ca7
JM		 2587 if (wpa_s->sme.sa_query_count == 0) {
2588 /* Starting a new SA Query procedure */
46b8d4c0 2589 os_get_reltime(&wpa_s->sme.sa_query_start);
7d878ca7
JM		 2590 }
2591 trans_id = nbuf + wpa_s->sme.sa_query_count * WLAN_SA_QUERY_TR_ID_LEN;
2592 wpa_s->sme.sa_query_trans_id = nbuf;
2593 wpa_s->sme.sa_query_count++;
2594
cb5ef952
JM		 2595 if (os_get_random(trans_id, WLAN_SA_QUERY_TR_ID_LEN) < 0) {
2596 wpa_printf(MSG_DEBUG, "Could not generate SA Query ID");
f8608fab 2597 sme_stop_sa_query(wpa_s);
cb5ef952
JM		 2598 return;
2599 }
7d878ca7
JM		 2600
2601 timeout = sa_query_retry_timeout;
2602 sec = ((timeout / 1000) * 1024) / 1000;
2603 usec = (timeout % 1000) * 1024;
2604 eloop_register_timeout(sec, usec, sme_sa_query_timer, wpa_s, NULL);
2605
f049052b
BG		 2606 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Association SA Query attempt %d",
2607 wpa_s->sme.sa_query_count);
7d878ca7
JM		 2608
2609 sme_send_sa_query_req(wpa_s, trans_id);
2610}
2611
2612
2613static void sme_start_sa_query(struct wpa_supplicant *wpa_s)
2614{
2615 sme_sa_query_timer(wpa_s, NULL);
2616}
2617
2618
19df9b07 2619static void sme_stop_sa_query(struct wpa_supplicant *wpa_s)
7d878ca7 2620{
7a206c50
JM		 2621 if (wpa_s->sme.sa_query_trans_id)
2622 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Stop SA Query");
7d878ca7
JM		 2623 eloop_cancel_timeout(sme_sa_query_timer, wpa_s, NULL);
2624 os_free(wpa_s->sme.sa_query_trans_id);
2625 wpa_s->sme.sa_query_trans_id = NULL;
2626 wpa_s->sme.sa_query_count = 0;
2627}
2628
2629
2630void sme_event_unprot_disconnect(struct wpa_supplicant *wpa_s, const u8 *sa,
2631 const u8 *da, u16 reason_code)
2632{
2633 struct wpa_ssid *ssid;
3302b7c2 2634 struct os_reltime now;
7d878ca7 2635
7d878ca7
JM		 2636 if (wpa_s->wpa_state != WPA_COMPLETED)
2637 return;
2638 ssid = wpa_s->current_ssid;
3f56a2b7 2639 if (wpas_get_ssid_pmf(wpa_s, ssid) == NO_MGMT_FRAME_PROTECTION)
7d878ca7
JM		 2640 return;
2641 if (os_memcmp(sa, wpa_s->bssid, ETH_ALEN) != 0)
2642 return;
2643 if (reason_code != WLAN_REASON_CLASS2_FRAME_FROM_NONAUTH_STA &&
2644 reason_code != WLAN_REASON_CLASS3_FRAME_FROM_NONASSOC_STA)
2645 return;
2646 if (wpa_s->sme.sa_query_count > 0)
2647 return;
2648
3302b7c2
JM		 2649 os_get_reltime(&now);
2650 if (wpa_s->sme.last_unprot_disconnect.sec &&
2651 !os_reltime_expired(&now, &wpa_s->sme.last_unprot_disconnect, 10))
2652 return; /* limit SA Query procedure frequency */
2653 wpa_s->sme.last_unprot_disconnect = now;
2654
f049052b
BG		 2655 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Unprotected disconnect dropped - "
2656 "possible AP/STA state mismatch - trigger SA Query");
7d878ca7
JM		 2657 sme_start_sa_query(wpa_s);
2658}
2659
2660
f91e68e9
MV		 2661void sme_event_ch_switch(struct wpa_supplicant *wpa_s)
2662{
2663 unsigned int usec;
2664 u32 _rand;
2665
2666 if (wpa_s->wpa_state != WPA_COMPLETED ||
2667 !wpa_sm_ocv_enabled(wpa_s->wpa))
2668 return;
2669
2670 wpa_dbg(wpa_s, MSG_DEBUG,
2671 "SME: Channel switch completed - trigger new SA Query to verify new operating channel");
2672 sme_stop_sa_query(wpa_s);
2673
2674 if (os_get_random((u8 *) &_rand, sizeof(_rand)) < 0)
2675 _rand = os_random();
2676 usec = _rand % (sa_query_ch_switch_max_delay + 1);
2677 eloop_register_timeout(0, usec, sme_sa_query_timer, wpa_s, NULL);
2678}
2679
2680
f9da7505
MV		 2681static void sme_process_sa_query_request(struct wpa_supplicant *wpa_s,
2682 const u8 *sa, const u8 *data,
2683 size_t len)
2684{
2685 u8 resp[2 + WLAN_SA_QUERY_TR_ID_LEN + OCV_OCI_EXTENDED_LEN];
2686 u8 resp_len = 2 + WLAN_SA_QUERY_TR_ID_LEN;
2687
2688 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Sending SA Query Response to "
2689 MACSTR, MAC2STR(wpa_s->bssid));
2690
2691 resp[0] = WLAN_ACTION_SA_QUERY;
2692 resp[1] = WLAN_SA_QUERY_RESPONSE;
2693 os_memcpy(resp + 2, data + 1, WLAN_SA_QUERY_TR_ID_LEN);
2694
2695#ifdef CONFIG_OCV
2696 if (wpa_sm_ocv_enabled(wpa_s->wpa)) {
2697 struct wpa_channel_info ci;
2698
2699 if (wpa_drv_channel_info(wpa_s, &ci) != 0) {
2700 wpa_printf(MSG_WARNING,
2701 "Failed to get channel info for OCI element in SA Query Response frame");
2702 return;
2703 }
2704
2705 if (ocv_insert_extended_oci(&ci, resp + resp_len) < 0)
2706 return;
2707
2708 resp_len += OCV_OCI_EXTENDED_LEN;
2709 }
2710#endif /* CONFIG_OCV */
2711
2712 if (wpa_drv_send_action(wpa_s, wpa_s->assoc_freq, 0, wpa_s->bssid,
2713 wpa_s->own_addr, wpa_s->bssid,
2714 resp, resp_len, 0) < 0)
2715 wpa_msg(wpa_s, MSG_INFO,
2716 "SME: Failed to send SA Query Response");
2717}
2718
2719
2720static void sme_process_sa_query_response(struct wpa_supplicant *wpa_s,
2721 const u8 *sa, const u8 *data,
2722 size_t len)
7d878ca7
JM		 2723{
2724 int i;
2725
f9da7505 2726 if (!wpa_s->sme.sa_query_trans_id)
7d878ca7 2727 return;
f9da7505 2728
f049052b
BG		 2729 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Received SA Query response from "
2730 MACSTR " (trans_id %02x%02x)", MAC2STR(sa), data[1], data[2]);
7d878ca7
JM		 2731
2732 if (os_memcmp(sa, wpa_s->bssid, ETH_ALEN) != 0)
2733 return;
2734
2735 for (i = 0; i < wpa_s->sme.sa_query_count; i++) {
2736 if (os_memcmp(wpa_s->sme.sa_query_trans_id +
2737 i * WLAN_SA_QUERY_TR_ID_LEN,
2738 data + 1, WLAN_SA_QUERY_TR_ID_LEN) == 0)
2739 break;
2740 }
2741
2742 if (i >= wpa_s->sme.sa_query_count) {
f049052b
BG		 2743 wpa_dbg(wpa_s, MSG_DEBUG, "SME: No matching SA Query "
2744 "transaction identifier found");
7d878ca7
JM		 2745 return;
2746 }
2747
f049052b
BG		 2748 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Reply to pending SA Query received "
2749 "from " MACSTR, MAC2STR(sa));
7d878ca7
JM		 2750 sme_stop_sa_query(wpa_s);
2751}
2752
f9da7505
MV		 2753
2754void sme_sa_query_rx(struct wpa_supplicant *wpa_s, const u8 *sa,
2755 const u8 *data, size_t len)
2756{
2757 if (len < 1 + WLAN_SA_QUERY_TR_ID_LEN)
2758 return;
2759
2760 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Received SA Query frame from "
2761 MACSTR " (trans_id %02x%02x)", MAC2STR(sa), data[1], data[2]);
2762
2763#ifdef CONFIG_OCV
2764 if (wpa_sm_ocv_enabled(wpa_s->wpa)) {
2765 struct ieee802_11_elems elems;
2766 struct wpa_channel_info ci;
2767
2768 if (ieee802_11_parse_elems(data + 1 + WLAN_SA_QUERY_TR_ID_LEN,
2769 len - 1 - WLAN_SA_QUERY_TR_ID_LEN,
2770 &elems, 1) == ParseFailed) {
2771 wpa_printf(MSG_DEBUG,
2772 "SA Query: Failed to parse elements");
2773 return;
2774 }
2775
2776 if (wpa_drv_channel_info(wpa_s, &ci) != 0) {
2777 wpa_printf(MSG_WARNING,
2778 "Failed to get channel info to validate received OCI in SA Query Action frame");
2779 return;
2780 }
2781
2782 if (ocv_verify_tx_params(elems.oci, elems.oci_len, &ci,
2783 channel_width_to_int(ci.chanwidth),
2784 ci.seg1_idx) != 0) {
2785 wpa_printf(MSG_WARNING, "%s", ocv_errorstr);
2786 return;
2787 }
2788 }
2789#endif /* CONFIG_OCV */
2790
2791 if (data[0] == WLAN_SA_QUERY_REQUEST)
2792 sme_process_sa_query_request(wpa_s, sa, data, len);
2793 else if (data[0] == WLAN_SA_QUERY_RESPONSE)
2794 sme_process_sa_query_response(wpa_s, sa, data, len);
2795}
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