]> git.ipfire.org Git - thirdparty/hostap.git/blame - wpa_supplicant/sme.c
projects / thirdparty / hostap.git / blame
? search:
summary | shortlog | log | commit | commitdiff | tree
blob | blame (incremental) | history | HEAD
Fix passive_scan config parameter writing
[thirdparty/hostap.git] / wpa_supplicant / sme.c
CommitLineData
c2a04078
JM		 1/*
2 * wpa_supplicant - SME
6ac4b15e 3 * Copyright (c) 2009-2014, Jouni Malinen <j@w1.fi>
c2a04078 4 *
0f3d578e
JM		 5 * This software may be distributed under the terms of the BSD license.
6 * See README for more details.
c2a04078
JM		 7 */
8
9#include "includes.h"
10
11#include "common.h"
7d878ca7 12#include "utils/eloop.h"
90973fb2 13#include "common/ieee802_11_defs.h"
d9a27b04 14#include "common/ieee802_11_common.h"
c2a04078 15#include "eapol_supp/eapol_supp_sm.h"
90973fb2 16#include "common/wpa_common.h"
98efcc41 17#include "common/sae.h"
3acb5005
JM		 18#include "rsn_supp/wpa.h"
19#include "rsn_supp/pmksa_cache.h"
c2a04078
JM		 20#include "config.h"
21#include "wpa_supplicant_i.h"
2d5b792d 22#include "driver_i.h"
c2a04078
JM		 23#include "wpas_glue.h"
24#include "wps_supplicant.h"
5f3a6aa0 25#include "p2p_supplicant.h"
8bac466b 26#include "notify.h"
6fa81a3b 27#include "bss.h"
9ba9fa07 28#include "scan.h"
c2a04078 29#include "sme.h"
cb418324 30#include "hs20_supplicant.h"
c2a04078 31
e29853bb
BG		 32#define SME_AUTH_TIMEOUT 5
33#define SME_ASSOC_TIMEOUT 5
34
35static void sme_auth_timer(void *eloop_ctx, void *timeout_ctx);
36static void sme_assoc_timer(void *eloop_ctx, void *timeout_ctx);
c3701c66 37static void sme_obss_scan_timeout(void *eloop_ctx, void *timeout_ctx);
e29853bb
BG		 38#ifdef CONFIG_IEEE80211W
39static void sme_stop_sa_query(struct wpa_supplicant *wpa_s);
40#endif /* CONFIG_IEEE80211W */
41
42
c10347f2
JM		 43#ifdef CONFIG_SAE
44
625f202a
JM		 45static int index_within_array(const int *array, int idx)
46{
47 int i;
48 for (i = 0; i < idx; i++) {
18ca7332 49 if (array[i] <= 0)
625f202a
JM		 50 return 0;
51 }
52 return 1;
53}
54
55
56static int sme_set_sae_group(struct wpa_supplicant *wpa_s)
57{
58 int *groups = wpa_s->conf->sae_groups;
18ca7332 59 int default_groups[] = { 19, 20, 21, 25, 26, 0 };
625f202a 60
18ca7332 61 if (!groups || groups[0] <= 0)
625f202a
JM		 62 groups = default_groups;
63
64 /* Configuration may have changed, so validate current index */
65 if (!index_within_array(groups, wpa_s->sme.sae_group_index))
66 return -1;
67
68 for (;;) {
69 int group = groups[wpa_s->sme.sae_group_index];
70 if (group < 0)
71 break;
72 if (sae_set_group(&wpa_s->sme.sae, group) == 0) {
73 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Selected SAE group %d",
74 wpa_s->sme.sae.group);
75 return 0;
76 }
77 wpa_s->sme.sae_group_index++;
78 }
79
80 return -1;
81}
82
83
8e31e955
JM		 84static struct wpabuf * sme_auth_build_sae_commit(struct wpa_supplicant *wpa_s,
85 struct wpa_ssid *ssid,
86 const u8 *bssid)
c10347f2
JM		 87{
88 struct wpabuf *buf;
d136c376 89 size_t len;
c10347f2 90
8e31e955
JM		 91 if (ssid->passphrase == NULL) {
92 wpa_printf(MSG_DEBUG, "SAE: No password available");
93 return NULL;
94 }
95
625f202a
JM		 96 if (sme_set_sae_group(wpa_s) < 0) {
97 wpa_printf(MSG_DEBUG, "SAE: Failed to select group");
a46d72d7 98 return NULL;
625f202a 99 }
a46d72d7 100
8e31e955
JM		 101 if (sae_prepare_commit(wpa_s->own_addr, bssid,
102 (u8 *) ssid->passphrase,
103 os_strlen(ssid->passphrase),
104 &wpa_s->sme.sae) < 0) {
105 wpa_printf(MSG_DEBUG, "SAE: Could not pick PWE");
106 return NULL;
107 }
108
d136c376
JM		 109 len = wpa_s->sme.sae_token ? wpabuf_len(wpa_s->sme.sae_token) : 0;
110 buf = wpabuf_alloc(4 + SAE_COMMIT_MAX_LEN + len);
c10347f2
JM		 111 if (buf == NULL)
112 return NULL;
113
114 wpabuf_put_le16(buf, 1); /* Transaction seq# */
115 wpabuf_put_le16(buf, WLAN_STATUS_SUCCESS);
d136c376 116 sae_write_commit(&wpa_s->sme.sae, buf, wpa_s->sme.sae_token);
c10347f2
JM		 117
118 return buf;
119}
120
121
122static struct wpabuf * sme_auth_build_sae_confirm(struct wpa_supplicant *wpa_s)
123{
124 struct wpabuf *buf;
125
fb8fcc29 126 buf = wpabuf_alloc(4 + SAE_CONFIRM_MAX_LEN);
c10347f2
JM		 127 if (buf == NULL)
128 return NULL;
129
130 wpabuf_put_le16(buf, 2); /* Transaction seq# */
131 wpabuf_put_le16(buf, WLAN_STATUS_SUCCESS);
fb8fcc29 132 sae_write_confirm(&wpa_s->sme.sae, buf);
c10347f2
JM		 133
134 return buf;
135}
136
137#endif /* CONFIG_SAE */
138
139
b361d580
AK		 140/**
141 * sme_auth_handle_rrm - Handle RRM aspects of current authentication attempt
142 * @wpa_s: Pointer to wpa_supplicant data
143 * @bss: Pointer to the bss which is the target of authentication attempt
144 */
145static void sme_auth_handle_rrm(struct wpa_supplicant *wpa_s,
146 struct wpa_bss *bss)
147{
148 const u8 rrm_ie_len = 5;
149 u8 *pos;
150 const u8 *rrm_ie;
151
152 wpa_s->rrm.rrm_used = 0;
153
154 wpa_printf(MSG_DEBUG,
155 "RRM: Determining whether RRM can be used - device support: 0x%x",
156 wpa_s->drv_rrm_flags);
157
158 rrm_ie = wpa_bss_get_ie(bss, WLAN_EID_RRM_ENABLED_CAPABILITIES);
159 if (!rrm_ie || !(bss->caps & IEEE80211_CAP_RRM)) {
160 wpa_printf(MSG_DEBUG, "RRM: No RRM in network");
161 return;
162 }
163
164 if (!(wpa_s->drv_rrm_flags &
165 WPA_DRIVER_FLAGS_DS_PARAM_SET_IE_IN_PROBES) ||
166 !(wpa_s->drv_rrm_flags & WPA_DRIVER_FLAGS_QUIET)) {
167 wpa_printf(MSG_DEBUG,
168 "RRM: Insufficient RRM support in driver - do not use RRM");
169 return;
170 }
171
849367af
JM		 172 if (sizeof(wpa_s->sme.assoc_req_ie) <
173 wpa_s->sme.assoc_req_ie_len + rrm_ie_len + 2) {
b361d580
AK		 174 wpa_printf(MSG_INFO,
175 "RRM: Unable to use RRM, no room for RRM IE");
176 return;
177 }
178
179 wpa_printf(MSG_DEBUG, "RRM: Adding RRM IE to Association Request");
180 pos = wpa_s->sme.assoc_req_ie + wpa_s->sme.assoc_req_ie_len;
b361d580
AK		 181 os_memset(pos, 0, 2 + rrm_ie_len);
182 *pos++ = WLAN_EID_RRM_ENABLED_CAPABILITIES;
183 *pos++ = rrm_ie_len;
70d1e728
AO		 184
185 /* Set supported capabilites flags */
186 if (wpa_s->drv_rrm_flags & WPA_DRIVER_FLAGS_TX_POWER_INSERTION)
187 *pos |= WLAN_RRM_CAPS_LINK_MEASUREMENT;
188
b361d580
AK		 189 wpa_s->sme.assoc_req_ie_len += rrm_ie_len + 2;
190 wpa_s->rrm.rrm_used = 1;
191}
192
193
215ae884
JM		 194static void sme_send_authentication(struct wpa_supplicant *wpa_s,
195 struct wpa_bss *bss, struct wpa_ssid *ssid,
196 int start)
c2a04078
JM		 197{
198 struct wpa_driver_auth_params params;
8bac466b 199 struct wpa_ssid *old_ssid;
fdbe50ed 200#ifdef CONFIG_IEEE80211R
c2a04078 201 const u8 *ie;
fdbe50ed 202#endif /* CONFIG_IEEE80211R */
c2a04078
JM		 203#ifdef CONFIG_IEEE80211R
204 const u8 *md = NULL;
205#endif /* CONFIG_IEEE80211R */
8bac466b 206 int i, bssid_changed;
c10347f2 207 struct wpabuf *resp = NULL;
0bbaa9b9 208 u8 ext_capab[18];
03e47c9c 209 int ext_capab_len;
c2a04078
JM		 210
211 if (bss == NULL) {
f049052b
BG		 212 wpa_msg(wpa_s, MSG_ERROR, "SME: No scan result available for "
213 "the network");
6ac4b15e 214 wpas_connect_work_done(wpa_s);
c2a04078
JM		 215 return;
216 }
217
8f770587
JM		 218 wpa_s->current_bss = bss;
219
c2a04078
JM		 220 os_memset(&params, 0, sizeof(params));
221 wpa_s->reassociate = 0;
222
223 params.freq = bss->freq;
224 params.bssid = bss->bssid;
6fa81a3b
JM		 225 params.ssid = bss->ssid;
226 params.ssid_len = bss->ssid_len;
2f4f73b1 227 params.p2p = ssid->p2p_group;
c2a04078 228
62fa124c
JM		 229 if (wpa_s->sme.ssid_len != params.ssid_len ||
230 os_memcmp(wpa_s->sme.ssid, params.ssid, params.ssid_len) != 0)
231 wpa_s->sme.prev_bssid_set = 0;
232
c2a04078
JM		 233 wpa_s->sme.freq = params.freq;
234 os_memcpy(wpa_s->sme.ssid, params.ssid, params.ssid_len);
235 wpa_s->sme.ssid_len = params.ssid_len;
236
abd9fafa 237 params.auth_alg = WPA_AUTH_ALG_OPEN;
c2a04078
JM		 238#ifdef IEEE8021X_EAPOL
239 if (ssid->key_mgmt & WPA_KEY_MGMT_IEEE8021X_NO_WPA) {
240 if (ssid->leap) {
241 if (ssid->non_leap == 0)
abd9fafa 242 params.auth_alg = WPA_AUTH_ALG_LEAP;
c2a04078 243 else
abd9fafa 244 params.auth_alg |= WPA_AUTH_ALG_LEAP;
c2a04078
JM		 245 }
246 }
247#endif /* IEEE8021X_EAPOL */
f049052b
BG		 248 wpa_dbg(wpa_s, MSG_DEBUG, "Automatic auth_alg selection: 0x%x",
249 params.auth_alg);
c2a04078 250 if (ssid->auth_alg) {
abd9fafa 251 params.auth_alg = ssid->auth_alg;
f049052b
BG		 252 wpa_dbg(wpa_s, MSG_DEBUG, "Overriding auth_alg selection: "
253 "0x%x", params.auth_alg);
c2a04078 254 }
c10347f2 255#ifdef CONFIG_SAE
bc26ac50 256 wpa_s->sme.sae_pmksa_caching = 0;
c10347f2
JM		 257 if (wpa_key_mgmt_sae(ssid->key_mgmt)) {
258 const u8 *rsn;
259 struct wpa_ie_data ied;
260
261 rsn = wpa_bss_get_ie(bss, WLAN_EID_RSN);
267ac3bc
JM		 262 if (!rsn) {
263 wpa_dbg(wpa_s, MSG_DEBUG,
264 "SAE enabled, but target BSS does not advertise RSN");
265 } else if (wpa_parse_wpa_ie(rsn, 2 + rsn[1], &ied) == 0 &&
266 wpa_key_mgmt_sae(ied.key_mgmt)) {
267 wpa_dbg(wpa_s, MSG_DEBUG, "Using SAE auth_alg");
268 params.auth_alg = WPA_AUTH_ALG_SAE;
269 } else {
270 wpa_dbg(wpa_s, MSG_DEBUG,
271 "SAE enabled, but target BSS does not advertise SAE AKM for RSN");
c10347f2
JM		 272 }
273 }
274#endif /* CONFIG_SAE */
c2a04078 275
a0b2f99b
JM		 276 for (i = 0; i < NUM_WEP_KEYS; i++) {
277 if (ssid->wep_key_len[i])
278 params.wep_key[i] = ssid->wep_key[i];
279 params.wep_key_len[i] = ssid->wep_key_len[i];
280 }
281 params.wep_tx_keyidx = ssid->wep_tx_keyidx;
282
8bac466b 283 bssid_changed = !is_zero_ether_addr(wpa_s->bssid);
c2a04078
JM		 284 os_memset(wpa_s->bssid, 0, ETH_ALEN);
285 os_memcpy(wpa_s->pending_bssid, bss->bssid, ETH_ALEN);
8bac466b
JM		 286 if (bssid_changed)
287 wpas_notify_bssid_changed(wpa_s);
c2a04078 288
f337f0e9
JM		 289 if ((wpa_bss_get_vendor_ie(bss, WPA_IE_VENDOR_TYPE) ||
290 wpa_bss_get_ie(bss, WLAN_EID_RSN)) &&
0bf927a0 291 wpa_key_mgmt_wpa(ssid->key_mgmt)) {
c2a04078 292 int try_opportunistic;
6e202021
JM		 293 try_opportunistic = (ssid->proactive_key_caching < 0 ?
294 wpa_s->conf->okc :
295 ssid->proactive_key_caching) &&
c2a04078
JM		 296 (ssid->proto & WPA_PROTO_RSN);
297 if (pmksa_cache_set_current(wpa_s->wpa, NULL, bss->bssid,
298 wpa_s->current_ssid,
299 try_opportunistic) == 0)
ba422613 300 eapol_sm_notify_pmkid_attempt(wpa_s->eapol);
c2a04078
JM		 301 wpa_s->sme.assoc_req_ie_len = sizeof(wpa_s->sme.assoc_req_ie);
302 if (wpa_supplicant_set_suites(wpa_s, bss, ssid,
303 wpa_s->sme.assoc_req_ie,
304 &wpa_s->sme.assoc_req_ie_len)) {
f049052b
BG		 305 wpa_msg(wpa_s, MSG_WARNING, "SME: Failed to set WPA "
306 "key management and encryption suites");
6ac4b15e 307 wpas_connect_work_done(wpa_s);
c2a04078
JM		 308 return;
309 }
a3f7e518
JM		 310 } else if ((ssid->key_mgmt & WPA_KEY_MGMT_IEEE8021X_NO_WPA) &&
311 wpa_key_mgmt_wpa_ieee8021x(ssid->key_mgmt)) {
312 /*
313 * Both WPA and non-WPA IEEE 802.1X enabled in configuration -
314 * use non-WPA since the scan results did not indicate that the
315 * AP is using WPA or WPA2.
316 */
317 wpa_supplicant_set_non_wpa_policy(wpa_s, ssid);
318 wpa_s->sme.assoc_req_ie_len = 0;
0bf927a0 319 } else if (wpa_key_mgmt_wpa_any(ssid->key_mgmt)) {
c2a04078
JM		 320 wpa_s->sme.assoc_req_ie_len = sizeof(wpa_s->sme.assoc_req_ie);
321 if (wpa_supplicant_set_suites(wpa_s, NULL, ssid,
322 wpa_s->sme.assoc_req_ie,
323 &wpa_s->sme.assoc_req_ie_len)) {
f049052b
BG		 324 wpa_msg(wpa_s, MSG_WARNING, "SME: Failed to set WPA "
325 "key management and encryption suites (no "
326 "scan results)");
6ac4b15e 327 wpas_connect_work_done(wpa_s);
c2a04078
JM		 328 return;
329 }
330#ifdef CONFIG_WPS
331 } else if (ssid->key_mgmt & WPA_KEY_MGMT_WPS) {
332 struct wpabuf *wps_ie;
333 wps_ie = wps_build_assoc_req_ie(wpas_wps_get_req_type(ssid));
334 if (wps_ie && wpabuf_len(wps_ie) <=
335 sizeof(wpa_s->sme.assoc_req_ie)) {
336 wpa_s->sme.assoc_req_ie_len = wpabuf_len(wps_ie);
337 os_memcpy(wpa_s->sme.assoc_req_ie, wpabuf_head(wps_ie),
338 wpa_s->sme.assoc_req_ie_len);
339 } else
340 wpa_s->sme.assoc_req_ie_len = 0;
341 wpabuf_free(wps_ie);
342 wpa_supplicant_set_non_wpa_policy(wpa_s, ssid);
343#endif /* CONFIG_WPS */
344 } else {
345 wpa_supplicant_set_non_wpa_policy(wpa_s, ssid);
346 wpa_s->sme.assoc_req_ie_len = 0;
347 }
348
349#ifdef CONFIG_IEEE80211R
6fa81a3b 350 ie = wpa_bss_get_ie(bss, WLAN_EID_MOBILITY_DOMAIN);
c2a04078
JM		 351 if (ie && ie[1] >= MOBILITY_DOMAIN_ID_LEN)
352 md = ie + 2;
e7846b68 353 wpa_sm_set_ft_params(wpa_s->wpa, ie, ie ? 2 + ie[1] : 0);
c2a04078
JM		 354 if (md) {
355 /* Prepare for the next transition */
76b7981d 356 wpa_ft_prepare_auth_request(wpa_s->wpa, ie);
c2a04078
JM		 357 }
358
0bf927a0 359 if (md && wpa_key_mgmt_ft(ssid->key_mgmt)) {
c2a04078
JM		 360 if (wpa_s->sme.assoc_req_ie_len + 5 <
361 sizeof(wpa_s->sme.assoc_req_ie)) {
362 struct rsn_mdie *mdie;
363 u8 *pos = wpa_s->sme.assoc_req_ie +
364 wpa_s->sme.assoc_req_ie_len;
365 *pos++ = WLAN_EID_MOBILITY_DOMAIN;
366 *pos++ = sizeof(*mdie);
367 mdie = (struct rsn_mdie *) pos;
368 os_memcpy(mdie->mobility_domain, md,
369 MOBILITY_DOMAIN_ID_LEN);
f4ec630d 370 mdie->ft_capab = md[MOBILITY_DOMAIN_ID_LEN];
c2a04078
JM		 371 wpa_s->sme.assoc_req_ie_len += 5;
372 }
373
374 if (wpa_s->sme.ft_used &&
0d7b4409
JM		 375 os_memcmp(md, wpa_s->sme.mobility_domain, 2) == 0 &&
376 wpa_sm_has_ptk(wpa_s->wpa)) {
f049052b
BG		 377 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Trying to use FT "
378 "over-the-air");
abd9fafa 379 params.auth_alg = WPA_AUTH_ALG_FT;
c2a04078
JM		 380 params.ie = wpa_s->sme.ft_ies;
381 params.ie_len = wpa_s->sme.ft_ies_len;
382 }
383 }
384#endif /* CONFIG_IEEE80211R */
385
386#ifdef CONFIG_IEEE80211W
3f56a2b7 387 wpa_s->sme.mfp = wpas_get_ssid_pmf(wpa_s, ssid);
62d49803 388 if (wpa_s->sme.mfp != NO_MGMT_FRAME_PROTECTION) {
6fa81a3b 389 const u8 *rsn = wpa_bss_get_ie(bss, WLAN_EID_RSN);
c2a04078
JM		 390 struct wpa_ie_data _ie;
391 if (rsn && wpa_parse_wpa_ie(rsn, 2 + rsn[1], &_ie) == 0 &&
392 _ie.capabilities &
393 (WPA_CAPABILITY_MFPC | WPA_CAPABILITY_MFPR)) {
f049052b
BG		 394 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Selected AP supports "
395 "MFP: require MFP");
c2a04078
JM		 396 wpa_s->sme.mfp = MGMT_FRAME_PROTECTION_REQUIRED;
397 }
398 }
399#endif /* CONFIG_IEEE80211W */
400
5f3a6aa0
JM		 401#ifdef CONFIG_P2P
402 if (wpa_s->global->p2p) {
403 u8 *pos;
404 size_t len;
405 int res;
5f3a6aa0
JM		 406 pos = wpa_s->sme.assoc_req_ie + wpa_s->sme.assoc_req_ie_len;
407 len = sizeof(wpa_s->sme.assoc_req_ie) -
408 wpa_s->sme.assoc_req_ie_len;
ffad8858
JM		 409 res = wpas_p2p_assoc_req_ie(wpa_s, bss, pos, len,
410 ssid->p2p_group);
5f3a6aa0
JM		 411 if (res >= 0)
412 wpa_s->sme.assoc_req_ie_len += res;
413 }
414#endif /* CONFIG_P2P */
415
cb418324 416#ifdef CONFIG_HS20
55a2df43 417 if (is_hs20_network(wpa_s, ssid, bss)) {
cb418324
JM		 418 struct wpabuf *hs20;
419 hs20 = wpabuf_alloc(20);
420 if (hs20) {
f9cd147d 421 int pps_mo_id = hs20_get_pps_mo_id(wpa_s, ssid);
745ef184
JM		 422 size_t len;
423
f9cd147d 424 wpas_hs20_add_indication(hs20, pps_mo_id);
745ef184
JM		 425 len = sizeof(wpa_s->sme.assoc_req_ie) -
426 wpa_s->sme.assoc_req_ie_len;
427 if (wpabuf_len(hs20) <= len) {
428 os_memcpy(wpa_s->sme.assoc_req_ie +
429 wpa_s->sme.assoc_req_ie_len,
430 wpabuf_head(hs20), wpabuf_len(hs20));
431 wpa_s->sme.assoc_req_ie_len += wpabuf_len(hs20);
432 }
cb418324
JM		 433 wpabuf_free(hs20);
434 }
435 }
436#endif /* CONFIG_HS20 */
437
0bbaa9b9
JM		 438 ext_capab_len = wpas_build_ext_capab(wpa_s, ext_capab,
439 sizeof(ext_capab));
03e47c9c 440 if (ext_capab_len > 0) {
92cbcf91
JM		 441 u8 *pos = wpa_s->sme.assoc_req_ie;
442 if (wpa_s->sme.assoc_req_ie_len > 0 && pos[0] == WLAN_EID_RSN)
443 pos += 2 + pos[1];
03e47c9c 444 os_memmove(pos + ext_capab_len, pos,
92cbcf91
JM		 445 wpa_s->sme.assoc_req_ie_len -
446 (pos - wpa_s->sme.assoc_req_ie));
03e47c9c
JM		 447 wpa_s->sme.assoc_req_ie_len += ext_capab_len;
448 os_memcpy(pos, ext_capab, ext_capab_len);
92cbcf91 449 }
92cbcf91 450
d29fa3a7
JM		 451 if (wpa_s->vendor_elem[VENDOR_ELEM_ASSOC_REQ]) {
452 struct wpabuf *buf = wpa_s->vendor_elem[VENDOR_ELEM_ASSOC_REQ];
453 size_t len;
454
455 len = sizeof(wpa_s->sme.assoc_req_ie) -
456 wpa_s->sme.assoc_req_ie_len;
457 if (wpabuf_len(buf) <= len) {
458 os_memcpy(wpa_s->sme.assoc_req_ie +
459 wpa_s->sme.assoc_req_ie_len,
460 wpabuf_head(buf), wpabuf_len(buf));
461 wpa_s->sme.assoc_req_ie_len += wpabuf_len(buf);
462 }
463 }
464
b361d580
AK		 465 sme_auth_handle_rrm(wpa_s, bss);
466
c10347f2 467#ifdef CONFIG_SAE
bc26ac50
JM		 468 if (params.auth_alg == WPA_AUTH_ALG_SAE &&
469 pmksa_cache_set_current(wpa_s->wpa, NULL, bss->bssid, ssid, 0) == 0)
470 {
471 wpa_dbg(wpa_s, MSG_DEBUG,
472 "PMKSA cache entry found - try to use PMKSA caching instead of new SAE authentication");
473 params.auth_alg = WPA_AUTH_ALG_OPEN;
474 wpa_s->sme.sae_pmksa_caching = 1;
475 }
476
c10347f2
JM		 477 if (params.auth_alg == WPA_AUTH_ALG_SAE) {
478 if (start)
8e31e955
JM		 479 resp = sme_auth_build_sae_commit(wpa_s, ssid,
480 bss->bssid);
c10347f2
JM		 481 else
482 resp = sme_auth_build_sae_confirm(wpa_s);
6ac4b15e 483 if (resp == NULL) {
81648d00 484 wpas_connection_failed(wpa_s, bss->bssid);
c10347f2 485 return;
6ac4b15e 486 }
c10347f2
JM		 487 params.sae_data = wpabuf_head(resp);
488 params.sae_data_len = wpabuf_len(resp);
dd43026a 489 wpa_s->sme.sae.state = start ? SAE_COMMITTED : SAE_CONFIRMED;
c10347f2
JM		 490 }
491#endif /* CONFIG_SAE */
492
a4cba8f1 493 wpa_supplicant_cancel_sched_scan(wpa_s);
c2a04078
JM		 494 wpa_supplicant_cancel_scan(wpa_s);
495
f049052b 496 wpa_msg(wpa_s, MSG_INFO, "SME: Trying to authenticate with " MACSTR
c2a04078
JM		 497 " (SSID='%s' freq=%d MHz)", MAC2STR(params.bssid),
498 wpa_ssid_txt(params.ssid, params.ssid_len), params.freq);
499
500 wpa_clear_keys(wpa_s, bss->bssid);
501 wpa_supplicant_set_state(wpa_s, WPA_AUTHENTICATING);
8bac466b 502 old_ssid = wpa_s->current_ssid;
c2a04078
JM		 503 wpa_s->current_ssid = ssid;
504 wpa_supplicant_rsn_supp_set_config(wpa_s, wpa_s->current_ssid);
505 wpa_supplicant_initiate_eapol(wpa_s);
8bac466b
JM		 506 if (old_ssid != wpa_s->current_ssid)
507 wpas_notify_network_changed(wpa_s);
c2a04078 508
d0df6437
IP		 509#ifdef CONFIG_P2P
510 /*
511 * If multi-channel concurrency is not supported, check for any
512 * frequency conflict. In case of any frequency conflict, remove the
513 * least prioritized connection.
514 */
515 if (wpa_s->num_multichan_concurrent < 2) {
516 int freq, num;
517 num = get_shared_radio_freqs(wpa_s, &freq, 1);
518 if (num > 0 && freq > 0 && freq != params.freq) {
519 wpa_printf(MSG_DEBUG,
520 "Conflicting frequency found (%d != %d)",
521 freq, params.freq);
522 if (wpas_p2p_handle_frequency_conflicts(wpa_s,
523 params.freq,
524 ssid) < 0) {
525 wpas_connection_failed(wpa_s, bss->bssid);
526 wpa_supplicant_mark_disassoc(wpa_s);
527 wpabuf_free(resp);
528 wpas_connect_work_done(wpa_s);
529 return;
530 }
531 }
532 }
533#endif /* CONFIG_P2P */
534
62c72d72 535 wpa_s->sme.auth_alg = params.auth_alg;
c2a04078 536 if (wpa_drv_authenticate(wpa_s, &params) < 0) {
f049052b 537 wpa_msg(wpa_s, MSG_INFO, "SME: Authentication request to the "
c2a04078 538 "driver failed");
ed57c590 539 wpas_connection_failed(wpa_s, bss->bssid);
1193dc8f 540 wpa_supplicant_mark_disassoc(wpa_s);
c10347f2 541 wpabuf_free(resp);
6ac4b15e 542 wpas_connect_work_done(wpa_s);
c2a04078
JM		 543 return;
544 }
545
e29853bb
BG		 546 eloop_register_timeout(SME_AUTH_TIMEOUT, 0, sme_auth_timer, wpa_s,
547 NULL);
c2a04078
JM		 548
549 /*
550 * Association will be started based on the authentication event from
551 * the driver.
552 */
c10347f2
JM		 553
554 wpabuf_free(resp);
555}
556
557
6ac4b15e
JM		 558static void sme_auth_start_cb(struct wpa_radio_work *work, int deinit)
559{
560 struct wpa_connect_work *cwork = work->ctx;
561 struct wpa_supplicant *wpa_s = work->wpa_s;
562
563 if (deinit) {
b3253ebb
AO		 564 if (work->started)
565 wpa_s->connect_work = NULL;
566
6ac4b15e
JM		 567 wpas_connect_work_free(cwork);
568 return;
569 }
570
571 wpa_s->connect_work = work;
572
a7f5271d
JM		 573 if (cwork->bss_removed ||
574 !wpas_valid_bss_ssid(wpa_s, cwork->bss, cwork->ssid)) {
6ac4b15e
JM		 575 wpa_dbg(wpa_s, MSG_DEBUG, "SME: BSS/SSID entry for authentication not valid anymore - drop connection attempt");
576 wpas_connect_work_done(wpa_s);
577 return;
578 }
579
580 sme_send_authentication(wpa_s, cwork->bss, cwork->ssid, 1);
581}
582
583
c10347f2
JM		 584void sme_authenticate(struct wpa_supplicant *wpa_s,
585 struct wpa_bss *bss, struct wpa_ssid *ssid)
586{
6ac4b15e
JM		 587 struct wpa_connect_work *cwork;
588
589 if (bss == NULL || ssid == NULL)
590 return;
591 if (wpa_s->connect_work) {
592 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Reject sme_authenticate() call since connect_work exist");
593 return;
594 }
595
f0e30c84 596 if (radio_work_pending(wpa_s, "sme-connect")) {
f1c4dbf5
IP		 597 /*
598 * The previous sme-connect work might no longer be valid due to
599 * the fact that the BSS list was updated. In addition, it makes
600 * sense to adhere to the 'newer' decision.
601 */
602 wpa_dbg(wpa_s, MSG_DEBUG,
603 "SME: Remove previous pending sme-connect");
604 radio_remove_works(wpa_s, "sme-connect", 0);
f0e30c84
JM		 605 }
606
6ac4b15e
JM		 607 cwork = os_zalloc(sizeof(*cwork));
608 if (cwork == NULL)
609 return;
610 cwork->bss = bss;
611 cwork->ssid = ssid;
612 cwork->sme = 1;
613
98efcc41 614#ifdef CONFIG_SAE
dd43026a 615 wpa_s->sme.sae.state = SAE_NOTHING;
98efcc41 616 wpa_s->sme.sae.send_confirm = 0;
18ca7332 617 wpa_s->sme.sae_group_index = 0;
98efcc41 618#endif /* CONFIG_SAE */
6ac4b15e
JM		 619
620 if (radio_add_work(wpa_s, bss->freq, "sme-connect", 1,
621 sme_auth_start_cb, cwork) < 0)
622 wpas_connect_work_free(cwork);
c2a04078
JM		 623}
624
625
c10347f2 626#ifdef CONFIG_SAE
21af6d15 627
c10347f2
JM		 628static int sme_sae_auth(struct wpa_supplicant *wpa_s, u16 auth_transaction,
629 u16 status_code, const u8 *data, size_t len)
630{
a959a3b6
MH		 631 int *groups;
632
c10347f2
JM		 633 wpa_dbg(wpa_s, MSG_DEBUG, "SME: SAE authentication transaction %u "
634 "status code %u", auth_transaction, status_code);
c10347f2 635
d136c376
JM		 636 if (auth_transaction == 1 &&
637 status_code == WLAN_STATUS_ANTI_CLOGGING_TOKEN_REQ &&
638 wpa_s->sme.sae.state == SAE_COMMITTED &&
639 wpa_s->current_bss && wpa_s->current_ssid) {
a959a3b6
MH		 640 int default_groups[] = { 19, 20, 21, 25, 26, 0 };
641 u16 group;
642
643 groups = wpa_s->conf->sae_groups;
644 if (!groups || groups[0] <= 0)
645 groups = default_groups;
646
647 if (len < sizeof(le16)) {
648 wpa_dbg(wpa_s, MSG_DEBUG,
649 "SME: Too short SAE anti-clogging token request");
650 return -1;
651 }
652 group = WPA_GET_LE16(data);
653 wpa_dbg(wpa_s, MSG_DEBUG,
654 "SME: SAE anti-clogging token requested (group %u)",
655 group);
656 if (sae_group_allowed(&wpa_s->sme.sae, groups, group) !=
657 WLAN_STATUS_SUCCESS) {
658 wpa_dbg(wpa_s, MSG_ERROR,
659 "SME: SAE group %u of anti-clogging request is invalid",
660 group);
661 return -1;
662 }
d136c376 663 wpabuf_free(wpa_s->sme.sae_token);
a959a3b6
MH		 664 wpa_s->sme.sae_token = wpabuf_alloc_copy(data + sizeof(le16),
665 len - sizeof(le16));
d136c376
JM		 666 sme_send_authentication(wpa_s, wpa_s->current_bss,
667 wpa_s->current_ssid, 1);
668 return 0;
669 }
670
625f202a
JM		 671 if (auth_transaction == 1 &&
672 status_code == WLAN_STATUS_FINITE_CYCLIC_GROUP_NOT_SUPPORTED &&
673 wpa_s->sme.sae.state == SAE_COMMITTED &&
674 wpa_s->current_bss && wpa_s->current_ssid) {
675 wpa_dbg(wpa_s, MSG_DEBUG, "SME: SAE group not supported");
676 wpa_s->sme.sae_group_index++;
677 if (sme_set_sae_group(wpa_s) < 0)
678 return -1; /* no other groups enabled */
679 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Try next enabled SAE group");
680 sme_send_authentication(wpa_s, wpa_s->current_bss,
681 wpa_s->current_ssid, 1);
682 return 0;
683 }
684
c10347f2
JM		 685 if (status_code != WLAN_STATUS_SUCCESS)
686 return -1;
687
688 if (auth_transaction == 1) {
a959a3b6 689 groups = wpa_s->conf->sae_groups;
18ca7332 690
c10347f2
JM		 691 wpa_dbg(wpa_s, MSG_DEBUG, "SME SAE commit");
692 if (wpa_s->current_bss == NULL ||
693 wpa_s->current_ssid == NULL)
694 return -1;
dd43026a 695 if (wpa_s->sme.sae.state != SAE_COMMITTED)
21af6d15 696 return -1;
18ca7332
JM		 697 if (groups && groups[0] <= 0)
698 groups = NULL;
625f202a 699 if (sae_parse_commit(&wpa_s->sme.sae, data, len, NULL, NULL,
18ca7332 700 groups) != WLAN_STATUS_SUCCESS)
21af6d15 701 return -1;
146f6c9a
JM		 702
703 if (sae_process_commit(&wpa_s->sme.sae) < 0) {
704 wpa_printf(MSG_DEBUG, "SAE: Failed to process peer "
705 "commit");
706 return -1;
707 }
708
d136c376
JM		 709 wpabuf_free(wpa_s->sme.sae_token);
710 wpa_s->sme.sae_token = NULL;
c10347f2
JM		 711 sme_send_authentication(wpa_s, wpa_s->current_bss,
712 wpa_s->current_ssid, 0);
713 return 0;
714 } else if (auth_transaction == 2) {
715 wpa_dbg(wpa_s, MSG_DEBUG, "SME SAE confirm");
dd43026a 716 if (wpa_s->sme.sae.state != SAE_CONFIRMED)
21af6d15 717 return -1;
f2e9818f 718 if (sae_check_confirm(&wpa_s->sme.sae, data, len) < 0)
21af6d15 719 return -1;
dd43026a 720 wpa_s->sme.sae.state = SAE_ACCEPTED;
b4fd3613 721 sae_clear_temp_data(&wpa_s->sme.sae);
c10347f2
JM		 722 return 1;
723 }
724
725 return -1;
726}
727#endif /* CONFIG_SAE */
728
729
c2a04078
JM		 730void sme_event_auth(struct wpa_supplicant *wpa_s, union wpa_event_data *data)
731{
c2a04078
JM		 732 struct wpa_ssid *ssid = wpa_s->current_ssid;
733
734 if (ssid == NULL) {
f049052b
BG		 735 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Ignore authentication event "
736 "when network is not selected");
c2a04078
JM		 737 return;
738 }
739
740 if (wpa_s->wpa_state != WPA_AUTHENTICATING) {
f049052b
BG		 741 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Ignore authentication event "
742 "when not in authenticating state");
c2a04078
JM		 743 return;
744 }
745
746 if (os_memcmp(wpa_s->pending_bssid, data->auth.peer, ETH_ALEN) != 0) {
f049052b
BG		 747 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Ignore authentication with "
748 "unexpected peer " MACSTR,
749 MAC2STR(data->auth.peer));
c2a04078
JM		 750 return;
751 }
752
f049052b 753 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Authentication response: peer=" MACSTR
c10347f2 754 " auth_type=%d auth_transaction=%d status_code=%d",
f049052b 755 MAC2STR(data->auth.peer), data->auth.auth_type,
c10347f2 756 data->auth.auth_transaction, data->auth.status_code);
c2a04078
JM		 757 wpa_hexdump(MSG_MSGDUMP, "SME: Authentication response IEs",
758 data->auth.ies, data->auth.ies_len);
759
e29853bb
BG		 760 eloop_cancel_timeout(sme_auth_timer, wpa_s, NULL);
761
c10347f2
JM		 762#ifdef CONFIG_SAE
763 if (data->auth.auth_type == WLAN_AUTH_SAE) {
21af6d15
JM		 764 int res;
765 res = sme_sae_auth(wpa_s, data->auth.auth_transaction,
766 data->auth.status_code, data->auth.ies,
767 data->auth.ies_len);
768 if (res < 0) {
769 wpas_connection_failed(wpa_s, wpa_s->pending_bssid);
770 wpa_supplicant_set_state(wpa_s, WPA_DISCONNECTED);
771
772 }
773 if (res != 1)
c10347f2 774 return;
47b55a3e
JM		 775
776 wpa_printf(MSG_DEBUG, "SME: SAE completed - setting PMK for "
777 "4-way handshake");
bc26ac50
JM		 778 wpa_sm_set_pmk(wpa_s->wpa, wpa_s->sme.sae.pmk, PMK_LEN,
779 wpa_s->pending_bssid);
c10347f2
JM		 780 }
781#endif /* CONFIG_SAE */
782
c2a04078 783 if (data->auth.status_code != WLAN_STATUS_SUCCESS) {
f049052b
BG		 784 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Authentication failed (status "
785 "code %d)", data->auth.status_code);
cb1583f6
SO		 786
787 if (data->auth.status_code !=
788 WLAN_STATUS_NOT_SUPPORTED_AUTH_ALG ||
789 wpa_s->sme.auth_alg == data->auth.auth_type ||
7e6646c7 790 wpa_s->current_ssid->auth_alg == WPA_AUTH_ALG_LEAP) {
0fb337c1 791 wpas_connection_failed(wpa_s, wpa_s->pending_bssid);
c1c02342 792 wpa_supplicant_set_state(wpa_s, WPA_DISCONNECTED);
cb1583f6 793 return;
7e6646c7 794 }
cb1583f6 795
d9504779
JM		 796 wpas_connect_work_done(wpa_s);
797
cb1583f6
SO		 798 switch (data->auth.auth_type) {
799 case WLAN_AUTH_OPEN:
800 wpa_s->current_ssid->auth_alg = WPA_AUTH_ALG_SHARED;
801
f049052b 802 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Trying SHARED auth");
cb1583f6
SO		 803 wpa_supplicant_associate(wpa_s, wpa_s->current_bss,
804 wpa_s->current_ssid);
805 return;
806
807 case WLAN_AUTH_SHARED_KEY:
808 wpa_s->current_ssid->auth_alg = WPA_AUTH_ALG_LEAP;
809
f049052b 810 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Trying LEAP auth");
cb1583f6
SO		 811 wpa_supplicant_associate(wpa_s, wpa_s->current_bss,
812 wpa_s->current_ssid);
813 return;
814
815 default:
816 return;
817 }
c2a04078
JM		 818 }
819
820#ifdef CONFIG_IEEE80211R
821 if (data->auth.auth_type == WLAN_AUTH_FT) {
822 union wpa_event_data edata;
823 os_memset(&edata, 0, sizeof(edata));
824 edata.ft_ies.ies = data->auth.ies;
825 edata.ft_ies.ies_len = data->auth.ies_len;
826 os_memcpy(edata.ft_ies.target_ap, data->auth.peer, ETH_ALEN);
827 wpa_supplicant_event(wpa_s, EVENT_FT_RESPONSE, &edata);
828 }
829#endif /* CONFIG_IEEE80211R */
830
71024cb2
JM		 831 sme_associate(wpa_s, ssid->mode, data->auth.peer,
832 data->auth.auth_type);
833}
834
835
836void sme_associate(struct wpa_supplicant *wpa_s, enum wpas_mode mode,
837 const u8 *bssid, u16 auth_type)
838{
839 struct wpa_driver_associate_params params;
d9a27b04 840 struct ieee802_11_elems elems;
80e8a5ee
BG		 841#ifdef CONFIG_HT_OVERRIDES
842 struct ieee80211_ht_capabilities htcaps;
843 struct ieee80211_ht_capabilities htcaps_mask;
844#endif /* CONFIG_HT_OVERRIDES */
e9ee8dc3
JB		 845#ifdef CONFIG_VHT_OVERRIDES
846 struct ieee80211_vht_capabilities vhtcaps;
847 struct ieee80211_vht_capabilities vhtcaps_mask;
848#endif /* CONFIG_VHT_OVERRIDES */
71024cb2 849
c2a04078 850 os_memset(&params, 0, sizeof(params));
71024cb2 851 params.bssid = bssid;
c2a04078
JM		 852 params.ssid = wpa_s->sme.ssid;
853 params.ssid_len = wpa_s->sme.ssid_len;
4ec68377 854 params.freq.freq = wpa_s->sme.freq;
1f6c0ab8
BS		 855 params.bg_scan_period = wpa_s->current_ssid ?
856 wpa_s->current_ssid->bg_scan_period : -1;
c2a04078
JM		 857 params.wpa_ie = wpa_s->sme.assoc_req_ie_len ?
858 wpa_s->sme.assoc_req_ie : NULL;
859 params.wpa_ie_len = wpa_s->sme.assoc_req_ie_len;
4848a38d
JM		 860 params.pairwise_suite = wpa_s->pairwise_cipher;
861 params.group_suite = wpa_s->group_cipher;
163f801e
JM		 862 params.key_mgmt_suite = wpa_s->key_mgmt;
863 params.wpa_proto = wpa_s->wpa_proto;
80e8a5ee
BG		 864#ifdef CONFIG_HT_OVERRIDES
865 os_memset(&htcaps, 0, sizeof(htcaps));
866 os_memset(&htcaps_mask, 0, sizeof(htcaps_mask));
867 params.htcaps = (u8 *) &htcaps;
868 params.htcaps_mask = (u8 *) &htcaps_mask;
869 wpa_supplicant_apply_ht_overrides(wpa_s, wpa_s->current_ssid, &params);
870#endif /* CONFIG_HT_OVERRIDES */
e9ee8dc3
JB		 871#ifdef CONFIG_VHT_OVERRIDES
872 os_memset(&vhtcaps, 0, sizeof(vhtcaps));
873 os_memset(&vhtcaps_mask, 0, sizeof(vhtcaps_mask));
874 params.vhtcaps = &vhtcaps;
875 params.vhtcaps_mask = &vhtcaps_mask;
876 wpa_supplicant_apply_vht_overrides(wpa_s, wpa_s->current_ssid, &params);
877#endif /* CONFIG_VHT_OVERRIDES */
c2a04078 878#ifdef CONFIG_IEEE80211R
71024cb2 879 if (auth_type == WLAN_AUTH_FT && wpa_s->sme.ft_ies) {
c2a04078
JM		 880 params.wpa_ie = wpa_s->sme.ft_ies;
881 params.wpa_ie_len = wpa_s->sme.ft_ies_len;
882 }
883#endif /* CONFIG_IEEE80211R */
71024cb2 884 params.mode = mode;
c2a04078 885 params.mgmt_frame_protection = wpa_s->sme.mfp;
b361d580 886 params.rrm_used = wpa_s->rrm.rrm_used;
62fa124c
JM		 887 if (wpa_s->sme.prev_bssid_set)
888 params.prev_bssid = wpa_s->sme.prev_bssid;
c2a04078
JM		 889
890 wpa_msg(wpa_s, MSG_INFO, "Trying to associate with " MACSTR
891 " (SSID='%s' freq=%d MHz)", MAC2STR(params.bssid),
892 params.ssid ? wpa_ssid_txt(params.ssid, params.ssid_len) : "",
4ec68377 893 params.freq.freq);
c2a04078
JM		 894
895 wpa_supplicant_set_state(wpa_s, WPA_ASSOCIATING);
896
9efc3f2a
JM		 897 if (params.wpa_ie == NULL ||
898 ieee802_11_parse_elems(params.wpa_ie, params.wpa_ie_len, &elems, 0)
d9a27b04 899 < 0) {
f049052b 900 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Could not parse own IEs?!");
d9a27b04
JM		 901 os_memset(&elems, 0, sizeof(elems));
902 }
64fa840a
JM		 903 if (elems.rsn_ie) {
904 params.wpa_proto = WPA_PROTO_RSN;
d9a27b04
JM		 905 wpa_sm_set_assoc_wpa_ie(wpa_s->wpa, elems.rsn_ie - 2,
906 elems.rsn_ie_len + 2);
64fa840a
JM		 907 } else if (elems.wpa_ie) {
908 params.wpa_proto = WPA_PROTO_WPA;
d9a27b04
JM		 909 wpa_sm_set_assoc_wpa_ie(wpa_s->wpa, elems.wpa_ie - 2,
910 elems.wpa_ie_len + 2);
df0f01d9
JM		 911 } else if (elems.osen) {
912 params.wpa_proto = WPA_PROTO_OSEN;
913 wpa_sm_set_assoc_wpa_ie(wpa_s->wpa, elems.osen - 2,
914 elems.osen_len + 2);
64fa840a 915 } else
d9a27b04 916 wpa_sm_set_assoc_wpa_ie(wpa_s->wpa, NULL, 0);
ffad8858 917 if (wpa_s->current_ssid && wpa_s->current_ssid->p2p_group)
6e3f4b89 918 params.p2p = 1;
d9a27b04 919
eea2fd9e
JM		 920 if (wpa_s->parent->set_sta_uapsd)
921 params.uapsd = wpa_s->parent->sta_uapsd;
922 else
923 params.uapsd = -1;
924
c2a04078 925 if (wpa_drv_associate(wpa_s, &params) < 0) {
f049052b
BG		 926 wpa_msg(wpa_s, MSG_INFO, "SME: Association request to the "
927 "driver failed");
e5ad96b7 928 wpas_connection_failed(wpa_s, wpa_s->pending_bssid);
c1c02342 929 wpa_supplicant_set_state(wpa_s, WPA_DISCONNECTED);
e5ad96b7 930 os_memset(wpa_s->pending_bssid, 0, ETH_ALEN);
c2a04078
JM		 931 return;
932 }
933
e29853bb
BG		 934 eloop_register_timeout(SME_ASSOC_TIMEOUT, 0, sme_assoc_timer, wpa_s,
935 NULL);
c2a04078
JM		 936}
937
938
939int sme_update_ft_ies(struct wpa_supplicant *wpa_s, const u8 *md,
940 const u8 *ies, size_t ies_len)
941{
942 if (md == NULL || ies == NULL) {
f049052b 943 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Remove mobility domain");
c2a04078
JM		 944 os_free(wpa_s->sme.ft_ies);
945 wpa_s->sme.ft_ies = NULL;
946 wpa_s->sme.ft_ies_len = 0;
947 wpa_s->sme.ft_used = 0;
948 return 0;
949 }
950
951 os_memcpy(wpa_s->sme.mobility_domain, md, MOBILITY_DOMAIN_ID_LEN);
952 wpa_hexdump(MSG_DEBUG, "SME: FT IEs", ies, ies_len);
953 os_free(wpa_s->sme.ft_ies);
954 wpa_s->sme.ft_ies = os_malloc(ies_len);
955 if (wpa_s->sme.ft_ies == NULL)
956 return -1;
957 os_memcpy(wpa_s->sme.ft_ies, ies, ies_len);
958 wpa_s->sme.ft_ies_len = ies_len;
959 return 0;
960}
efa46078
JM		 961
962
e29853bb 963static void sme_deauth(struct wpa_supplicant *wpa_s)
efa46078 964{
8bac466b
JM		 965 int bssid_changed;
966
8bac466b 967 bssid_changed = !is_zero_ether_addr(wpa_s->bssid);
76d11d3f 968
76d11d3f
JM		 969 if (wpa_drv_deauthenticate(wpa_s, wpa_s->pending_bssid,
970 WLAN_REASON_DEAUTH_LEAVING) < 0) {
f049052b
BG		 971 wpa_msg(wpa_s, MSG_INFO, "SME: Deauth request to the driver "
972 "failed");
76d11d3f 973 }
62fa124c 974 wpa_s->sme.prev_bssid_set = 0;
76d11d3f 975
0fb337c1 976 wpas_connection_failed(wpa_s, wpa_s->pending_bssid);
76d11d3f 977 wpa_supplicant_set_state(wpa_s, WPA_DISCONNECTED);
efa46078
JM		 978 os_memset(wpa_s->bssid, 0, ETH_ALEN);
979 os_memset(wpa_s->pending_bssid, 0, ETH_ALEN);
8bac466b
JM		 980 if (bssid_changed)
981 wpas_notify_bssid_changed(wpa_s);
efa46078 982}
da1fb17c
JM		 983
984
e29853bb
BG		 985void sme_event_assoc_reject(struct wpa_supplicant *wpa_s,
986 union wpa_event_data *data)
987{
988 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Association with " MACSTR " failed: "
989 "status code %d", MAC2STR(wpa_s->pending_bssid),
990 data->assoc_reject.status_code);
991
992 eloop_cancel_timeout(sme_assoc_timer, wpa_s, NULL);
993
bc26ac50
JM		 994#ifdef CONFIG_SAE
995 if (wpa_s->sme.sae_pmksa_caching && wpa_s->current_ssid &&
996 wpa_key_mgmt_sae(wpa_s->current_ssid->key_mgmt)) {
997 wpa_dbg(wpa_s, MSG_DEBUG,
998 "PMKSA caching attempt rejected - drop PMKSA cache entry and fall back to SAE authentication");
999 wpa_sm_aborted_cached(wpa_s->wpa);
1000 wpa_sm_pmksa_cache_flush(wpa_s->wpa, wpa_s->current_ssid);
1001 if (wpa_s->current_bss) {
1002 struct wpa_bss *bss = wpa_s->current_bss;
1003 struct wpa_ssid *ssid = wpa_s->current_ssid;
1004
1005 wpa_drv_deauthenticate(wpa_s, wpa_s->pending_bssid,
1006 WLAN_REASON_DEAUTH_LEAVING);
1007 wpas_connect_work_done(wpa_s);
1008 wpa_supplicant_mark_disassoc(wpa_s);
1009 wpa_supplicant_connect(wpa_s, bss, ssid);
1010 return;
1011 }
1012 }
1013#endif /* CONFIG_SAE */
1014
e29853bb
BG		 1015 /*
1016 * For now, unconditionally terminate the previous authentication. In
1017 * theory, this should not be needed, but mac80211 gets quite confused
1018 * if the authentication is left pending.. Some roaming cases might
1019 * benefit from using the previous authentication, so this could be
1020 * optimized in the future.
1021 */
1022 sme_deauth(wpa_s);
1023}
1024
1025
da1fb17c
JM		 1026void sme_event_auth_timed_out(struct wpa_supplicant *wpa_s,
1027 union wpa_event_data *data)
1028{
f049052b 1029 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Authentication timed out");
0fb337c1 1030 wpas_connection_failed(wpa_s, wpa_s->pending_bssid);
1193dc8f 1031 wpa_supplicant_mark_disassoc(wpa_s);
da1fb17c
JM		 1032}
1033
1034
1035void sme_event_assoc_timed_out(struct wpa_supplicant *wpa_s,
1036 union wpa_event_data *data)
1037{
f049052b 1038 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Association timed out");
0fb337c1 1039 wpas_connection_failed(wpa_s, wpa_s->pending_bssid);
da1fb17c 1040 wpa_supplicant_mark_disassoc(wpa_s);
da1fb17c 1041}
a84ed99e
JM		 1042
1043
1044void sme_event_disassoc(struct wpa_supplicant *wpa_s,
d7df0fa7 1045 struct disassoc_info *info)
a84ed99e 1046{
f049052b 1047 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Disassociation event received");
17fbb751 1048 if (wpa_s->sme.prev_bssid_set) {
a84ed99e
JM		 1049 /*
1050 * cfg80211/mac80211 can get into somewhat confused state if
1051 * the AP only disassociates us and leaves us in authenticated
1052 * state. For now, force the state to be cleared to avoid
1053 * confusing errors if we try to associate with the AP again.
1054 */
f049052b
BG		 1055 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Deauthenticate to clear "
1056 "driver state");
7e26053a 1057 wpa_drv_deauthenticate(wpa_s, wpa_s->sme.prev_bssid,
a84ed99e
JM		 1058 WLAN_REASON_DEAUTH_LEAVING);
1059 }
1060}
7d878ca7
JM		 1061
1062
e29853bb
BG		 1063static void sme_auth_timer(void *eloop_ctx, void *timeout_ctx)
1064{
1065 struct wpa_supplicant *wpa_s = eloop_ctx;
1066 if (wpa_s->wpa_state == WPA_AUTHENTICATING) {
1067 wpa_msg(wpa_s, MSG_DEBUG, "SME: Authentication timeout");
1068 sme_deauth(wpa_s);
1069 }
1070}
1071
1072
1073static void sme_assoc_timer(void *eloop_ctx, void *timeout_ctx)
1074{
1075 struct wpa_supplicant *wpa_s = eloop_ctx;
1076 if (wpa_s->wpa_state == WPA_ASSOCIATING) {
1077 wpa_msg(wpa_s, MSG_DEBUG, "SME: Association timeout");
1078 sme_deauth(wpa_s);
1079 }
1080}
1081
1082
1083void sme_state_changed(struct wpa_supplicant *wpa_s)
1084{
1085 /* Make sure timers are cleaned up appropriately. */
1086 if (wpa_s->wpa_state != WPA_ASSOCIATING)
1087 eloop_cancel_timeout(sme_assoc_timer, wpa_s, NULL);
1088 if (wpa_s->wpa_state != WPA_AUTHENTICATING)
1089 eloop_cancel_timeout(sme_auth_timer, wpa_s, NULL);
1090}
1091
1092
1093void sme_disassoc_while_authenticating(struct wpa_supplicant *wpa_s,
1094 const u8 *prev_pending_bssid)
1095{
1096 /*
1097 * mac80211-workaround to force deauth on failed auth cmd,
1098 * requires us to remain in authenticating state to allow the
1099 * second authentication attempt to be continued properly.
1100 */
1101 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Allow pending authentication "
1102 "to proceed after disconnection event");
1103 wpa_supplicant_set_state(wpa_s, WPA_AUTHENTICATING);
1104 os_memcpy(wpa_s->pending_bssid, prev_pending_bssid, ETH_ALEN);
1105
1106 /*
1107 * Re-arm authentication timer in case auth fails for whatever reason.
1108 */
1109 eloop_cancel_timeout(sme_auth_timer, wpa_s, NULL);
1110 eloop_register_timeout(SME_AUTH_TIMEOUT, 0, sme_auth_timer, wpa_s,
1111 NULL);
1112}
1113
1114
4e70bbf1
JM		 1115void sme_clear_on_disassoc(struct wpa_supplicant *wpa_s)
1116{
1117 wpa_s->sme.prev_bssid_set = 0;
1118#ifdef CONFIG_SAE
1119 wpabuf_free(wpa_s->sme.sae_token);
1120 wpa_s->sme.sae_token = NULL;
1121 sae_clear_data(&wpa_s->sme.sae);
1122#endif /* CONFIG_SAE */
1123#ifdef CONFIG_IEEE80211R
1124 if (wpa_s->sme.ft_ies)
1125 sme_update_ft_ies(wpa_s, NULL, NULL, 0);
1126#endif /* CONFIG_IEEE80211R */
1127}
1128
1129
e29853bb
BG		 1130void sme_deinit(struct wpa_supplicant *wpa_s)
1131{
1132 os_free(wpa_s->sme.ft_ies);
1133 wpa_s->sme.ft_ies = NULL;
1134 wpa_s->sme.ft_ies_len = 0;
1135#ifdef CONFIG_IEEE80211W
1136 sme_stop_sa_query(wpa_s);
1137#endif /* CONFIG_IEEE80211W */
4e70bbf1 1138 sme_clear_on_disassoc(wpa_s);
e29853bb
BG		 1139
1140 eloop_cancel_timeout(sme_assoc_timer, wpa_s, NULL);
1141 eloop_cancel_timeout(sme_auth_timer, wpa_s, NULL);
c3701c66
RM		 1142 eloop_cancel_timeout(sme_obss_scan_timeout, wpa_s, NULL);
1143}
1144
1145
1146static void sme_send_2040_bss_coex(struct wpa_supplicant *wpa_s,
1147 const u8 *chan_list, u8 num_channels,
1148 u8 num_intol)
1149{
1150 struct ieee80211_2040_bss_coex_ie *bc_ie;
1151 struct ieee80211_2040_intol_chan_report *ic_report;
1152 struct wpabuf *buf;
1153
31ded52e
JM		 1154 wpa_printf(MSG_DEBUG, "SME: Send 20/40 BSS Coexistence to " MACSTR
1155 " (num_channels=%u num_intol=%u)",
1156 MAC2STR(wpa_s->bssid), num_channels, num_intol);
1157 wpa_hexdump(MSG_DEBUG, "SME: 20/40 BSS Intolerant Channels",
1158 chan_list, num_channels);
c3701c66
RM		 1159
1160 buf = wpabuf_alloc(2 + /* action.category + action_code */
1161 sizeof(struct ieee80211_2040_bss_coex_ie) +
1162 sizeof(struct ieee80211_2040_intol_chan_report) +
1163 num_channels);
1164 if (buf == NULL)
1165 return;
1166
1167 wpabuf_put_u8(buf, WLAN_ACTION_PUBLIC);
1168 wpabuf_put_u8(buf, WLAN_PA_20_40_BSS_COEX);
1169
1170 bc_ie = wpabuf_put(buf, sizeof(*bc_ie));
1171 bc_ie->element_id = WLAN_EID_20_40_BSS_COEXISTENCE;
1172 bc_ie->length = 1;
1173 if (num_intol)
1174 bc_ie->coex_param |= WLAN_20_40_BSS_COEX_20MHZ_WIDTH_REQ;
1175
1176 if (num_channels > 0) {
1177 ic_report = wpabuf_put(buf, sizeof(*ic_report));
1178 ic_report->element_id = WLAN_EID_20_40_BSS_INTOLERANT;
1179 ic_report->length = num_channels + 1;
1180 ic_report->op_class = 0;
1181 os_memcpy(wpabuf_put(buf, num_channels), chan_list,
1182 num_channels);
1183 }
1184
1185 if (wpa_drv_send_action(wpa_s, wpa_s->assoc_freq, 0, wpa_s->bssid,
1186 wpa_s->own_addr, wpa_s->bssid,
1187 wpabuf_head(buf), wpabuf_len(buf), 0) < 0) {
1188 wpa_msg(wpa_s, MSG_INFO,
1189 "SME: Failed to send 20/40 BSS Coexistence frame");
1190 }
1191
1192 wpabuf_free(buf);
1193}
1194
1195
c3701c66
RM		 1196int sme_proc_obss_scan(struct wpa_supplicant *wpa_s)
1197{
1198 struct wpa_bss *bss;
1199 const u8 *ie;
1200 u16 ht_cap;
1201 u8 chan_list[P2P_MAX_CHANNELS], channel;
1202 u8 num_channels = 0, num_intol = 0, i;
1203
1204 if (!wpa_s->sme.sched_obss_scan)
1205 return 0;
1206
1207 wpa_s->sme.sched_obss_scan = 0;
1208 if (!wpa_s->current_bss || wpa_s->wpa_state != WPA_COMPLETED)
1209 return 1;
1210
1211 /*
1212 * Check whether AP uses regulatory triplet or channel triplet in
1213 * country info. Right now the operating class of the BSS channel
1214 * width trigger event is "unknown" (IEEE Std 802.11-2012 10.15.12),
1215 * based on the assumption that operating class triplet is not used in
1216 * beacon frame. If the First Channel Number/Operating Extension
1217 * Identifier octet has a positive integer value of 201 or greater,
1218 * then its operating class triplet.
1219 *
1220 * TODO: If Supported Operating Classes element is present in beacon
1221 * frame, have to lookup operating class in Annex E and fill them in
1222 * 2040 coex frame.
1223 */
1224 ie = wpa_bss_get_ie(wpa_s->current_bss, WLAN_EID_COUNTRY);
1225 if (ie && (ie[1] >= 6) && (ie[5] >= 201))
1226 return 1;
1227
1228 os_memset(chan_list, 0, sizeof(chan_list));
1229
1230 dl_list_for_each(bss, &wpa_s->bss, struct wpa_bss, list) {
1231 /* Skip other band bss */
e864c0ae
JM		 1232 enum hostapd_hw_mode mode;
1233 mode = ieee80211_freq_to_chan(bss->freq, &channel);
1234 if (mode != HOSTAPD_MODE_IEEE80211G &&
1235 mode != HOSTAPD_MODE_IEEE80211B)
c3701c66
RM		 1236 continue;
1237
1238 ie = wpa_bss_get_ie(bss, WLAN_EID_HT_CAP);
1239 ht_cap = (ie && (ie[1] == 26)) ? WPA_GET_LE16(ie + 2) : 0;
31ded52e
JM		 1240 wpa_printf(MSG_DEBUG, "SME OBSS scan BSS " MACSTR
1241 " freq=%u chan=%u ht_cap=0x%x",
1242 MAC2STR(bss->bssid), bss->freq, channel, ht_cap);
c3701c66
RM		 1243
1244 if (!ht_cap || (ht_cap & HT_CAP_INFO_40MHZ_INTOLERANT)) {
7f8eb34d
JM		 1245 if (ht_cap & HT_CAP_INFO_40MHZ_INTOLERANT)
1246 num_intol++;
1247
c3701c66
RM		 1248 /* Check whether the channel is already considered */
1249 for (i = 0; i < num_channels; i++) {
1250 if (channel == chan_list[i])
1251 break;
1252 }
1253 if (i != num_channels)
1254 continue;
1255
c3701c66
RM		 1256 chan_list[num_channels++] = channel;
1257 }
1258 }
1259
1260 sme_send_2040_bss_coex(wpa_s, chan_list, num_channels, num_intol);
1261 return 1;
1262}
1263
1264
6434ad09
JM		 1265static struct hostapd_hw_modes * get_mode(struct hostapd_hw_modes *modes,
1266 u16 num_modes,
1267 enum hostapd_hw_mode mode)
1268{
1269 u16 i;
1270
1271 for (i = 0; i < num_modes; i++) {
1272 if (modes[i].mode == mode)
1273 return &modes[i];
1274 }
1275
1276 return NULL;
1277}
1278
1279
d97a3c48
JM		 1280static void wpa_obss_scan_freqs_list(struct wpa_supplicant *wpa_s,
1281 struct wpa_driver_scan_params *params)
6434ad09 1282{
d97a3c48 1283 /* Include only affected channels */
6434ad09
JM		 1284 struct hostapd_hw_modes *mode;
1285 int count, i;
d97a3c48 1286 int start, end;
6434ad09 1287
d97a3c48
JM		 1288 mode = get_mode(wpa_s->hw.modes, wpa_s->hw.num_modes,
1289 HOSTAPD_MODE_IEEE80211G);
6434ad09
JM		 1290 if (mode == NULL) {
1291 /* No channels supported in this band - use empty list */
1292 params->freqs = os_zalloc(sizeof(int));
1293 return;
1294 }
1295
d97a3c48
JM		 1296 if (wpa_s->sme.ht_sec_chan == HT_SEC_CHAN_UNKNOWN &&
1297 wpa_s->current_bss) {
1298 const u8 *ie;
1299
1300 ie = wpa_bss_get_ie(wpa_s->current_bss, WLAN_EID_HT_OPERATION);
1301 if (ie && ie[1] >= 2) {
1302 u8 o;
1303
1304 o = ie[3] & HT_INFO_HT_PARAM_SECONDARY_CHNL_OFF_MASK;
1305 if (o == HT_INFO_HT_PARAM_SECONDARY_CHNL_ABOVE)
1306 wpa_s->sme.ht_sec_chan = HT_SEC_CHAN_ABOVE;
1307 else if (o == HT_INFO_HT_PARAM_SECONDARY_CHNL_BELOW)
1308 wpa_s->sme.ht_sec_chan = HT_SEC_CHAN_BELOW;
1309 }
1310 }
1311
1312 start = wpa_s->assoc_freq - 10;
1313 end = wpa_s->assoc_freq + 10;
1314 switch (wpa_s->sme.ht_sec_chan) {
1315 case HT_SEC_CHAN_UNKNOWN:
1316 /* HT40+ possible on channels 1..9 */
1317 if (wpa_s->assoc_freq <= 2452)
1318 start -= 20;
1319 /* HT40- possible on channels 5-13 */
1320 if (wpa_s->assoc_freq >= 2432)
1321 end += 20;
1322 break;
1323 case HT_SEC_CHAN_ABOVE:
1324 end += 20;
1325 break;
1326 case HT_SEC_CHAN_BELOW:
1327 start -= 20;
1328 break;
1329 }
1330 wpa_printf(MSG_DEBUG,
1331 "OBSS: assoc_freq %d possible affected range %d-%d",
1332 wpa_s->assoc_freq, start, end);
1333
f9884c09 1334 params->freqs = os_calloc(mode->num_channels + 1, sizeof(int));
6434ad09
JM		 1335 if (params->freqs == NULL)
1336 return;
1337 for (count = 0, i = 0; i < mode->num_channels; i++) {
d97a3c48
JM		 1338 int freq;
1339
6434ad09
JM		 1340 if (mode->channels[i].flag & HOSTAPD_CHAN_DISABLED)
1341 continue;
d97a3c48
JM		 1342 freq = mode->channels[i].freq;
1343 if (freq - 10 >= end || freq + 10 <= start)
1344 continue; /* not affected */
1345 params->freqs[count++] = freq;
6434ad09
JM		 1346 }
1347}
1348
1349
c3701c66
RM		 1350static void sme_obss_scan_timeout(void *eloop_ctx, void *timeout_ctx)
1351{
1352 struct wpa_supplicant *wpa_s = eloop_ctx;
1353 struct wpa_driver_scan_params params;
1354
1355 if (!wpa_s->current_bss) {
1356 wpa_printf(MSG_DEBUG, "SME OBSS: Ignore scan request");
1357 return;
1358 }
1359
1360 os_memset(&params, 0, sizeof(params));
d97a3c48 1361 wpa_obss_scan_freqs_list(wpa_s, &params);
57a8f8af 1362 params.low_priority = 1;
c3701c66
RM		 1363 wpa_printf(MSG_DEBUG, "SME OBSS: Request an OBSS scan");
1364
1365 if (wpa_supplicant_trigger_scan(wpa_s, &params))
1366 wpa_printf(MSG_DEBUG, "SME OBSS: Failed to trigger scan");
1367 else
1368 wpa_s->sme.sched_obss_scan = 1;
6434ad09 1369 os_free(params.freqs);
c3701c66
RM		 1370
1371 eloop_register_timeout(wpa_s->sme.obss_scan_int, 0,
1372 sme_obss_scan_timeout, wpa_s, NULL);
1373}
1374
1375
1376void sme_sched_obss_scan(struct wpa_supplicant *wpa_s, int enable)
1377{
1378 const u8 *ie;
1379 struct wpa_bss *bss = wpa_s->current_bss;
1380 struct wpa_ssid *ssid = wpa_s->current_ssid;
b6871ebb
AN		 1381 struct hostapd_hw_modes *hw_mode = NULL;
1382 int i;
c3701c66
RM		 1383
1384 eloop_cancel_timeout(sme_obss_scan_timeout, wpa_s, NULL);
1385 wpa_s->sme.sched_obss_scan = 0;
d97a3c48 1386 wpa_s->sme.ht_sec_chan = HT_SEC_CHAN_UNKNOWN;
c3701c66
RM		 1387 if (!enable)
1388 return;
1389
368b1957
AK		 1390 /*
1391 * Schedule OBSS scan if driver is using station SME in wpa_supplicant
1392 * or it expects OBSS scan to be performed by wpa_supplicant.
1393 */
1394 if (!((wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME) ||
1395 (wpa_s->drv_flags & WPA_DRIVER_FLAGS_OBSS_SCAN)) ||
1396 ssid == NULL || ssid->mode != IEEE80211_MODE_INFRA)
1397 return;
c3701c66 1398
b6871ebb
AN		 1399 if (!wpa_s->hw.modes)
1400 return;
1401
1402 /* only HT caps in 11g mode are relevant */
1403 for (i = 0; i < wpa_s->hw.num_modes; i++) {
1404 hw_mode = &wpa_s->hw.modes[i];
1405 if (hw_mode->mode == HOSTAPD_MODE_IEEE80211G)
1406 break;
1407 }
1408
1409 /* Driver does not support HT40 for 11g or doesn't have 11g. */
1410 if (i == wpa_s->hw.num_modes || !hw_mode ||
1411 !(hw_mode->ht_capab & HT_CAP_INFO_SUPP_CHANNEL_WIDTH_SET))
1412 return;
c3701c66
RM		 1413
1414 if (bss == NULL || bss->freq < 2400 || bss->freq > 2500)
1415 return; /* Not associated on 2.4 GHz band */
1416
1417 /* Check whether AP supports HT40 */
1418 ie = wpa_bss_get_ie(wpa_s->current_bss, WLAN_EID_HT_CAP);
1419 if (!ie || ie[1] < 2 ||
1420 !(WPA_GET_LE16(ie + 2) & HT_CAP_INFO_SUPP_CHANNEL_WIDTH_SET))
1421 return; /* AP does not support HT40 */
1422
1423 ie = wpa_bss_get_ie(wpa_s->current_bss,
1424 WLAN_EID_OVERLAPPING_BSS_SCAN_PARAMS);
1425 if (!ie || ie[1] < 14)
1426 return; /* AP does not request OBSS scans */
1427
1428 wpa_s->sme.obss_scan_int = WPA_GET_LE16(ie + 6);
1429 if (wpa_s->sme.obss_scan_int < 10) {
1430 wpa_printf(MSG_DEBUG, "SME: Invalid OBSS Scan Interval %u "
1431 "replaced with the minimum 10 sec",
1432 wpa_s->sme.obss_scan_int);
1433 wpa_s->sme.obss_scan_int = 10;
1434 }
1435 wpa_printf(MSG_DEBUG, "SME: OBSS Scan Interval %u sec",
1436 wpa_s->sme.obss_scan_int);
1437 eloop_register_timeout(wpa_s->sme.obss_scan_int, 0,
1438 sme_obss_scan_timeout, wpa_s, NULL);
e29853bb
BG		 1439}
1440
1441
7d878ca7
JM		 1442#ifdef CONFIG_IEEE80211W
1443
1444static const unsigned int sa_query_max_timeout = 1000;
1445static const unsigned int sa_query_retry_timeout = 201;
1446
1447static int sme_check_sa_query_timeout(struct wpa_supplicant *wpa_s)
1448{
1449 u32 tu;
46b8d4c0
JB		 1450 struct os_reltime now, passed;
1451 os_get_reltime(&now);
1452 os_reltime_sub(&now, &wpa_s->sme.sa_query_start, &passed);
7d878ca7
JM		 1453 tu = (passed.sec * 1000000 + passed.usec) / 1024;
1454 if (sa_query_max_timeout < tu) {
f049052b 1455 wpa_dbg(wpa_s, MSG_DEBUG, "SME: SA Query timed out");
7d878ca7
JM		 1456 sme_stop_sa_query(wpa_s);
1457 wpa_supplicant_deauthenticate(
1458 wpa_s, WLAN_REASON_PREV_AUTH_NOT_VALID);
1459 return 1;
1460 }
1461
1462 return 0;
1463}
1464
1465
1466static void sme_send_sa_query_req(struct wpa_supplicant *wpa_s,
1467 const u8 *trans_id)
1468{
1469 u8 req[2 + WLAN_SA_QUERY_TR_ID_LEN];
f049052b
BG		 1470 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Sending SA Query Request to "
1471 MACSTR, MAC2STR(wpa_s->bssid));
7d878ca7
JM		 1472 wpa_hexdump(MSG_DEBUG, "SME: SA Query Transaction ID",
1473 trans_id, WLAN_SA_QUERY_TR_ID_LEN);
1474 req[0] = WLAN_ACTION_SA_QUERY;
1475 req[1] = WLAN_SA_QUERY_REQUEST;
1476 os_memcpy(req + 2, trans_id, WLAN_SA_QUERY_TR_ID_LEN);
190b9062 1477 if (wpa_drv_send_action(wpa_s, wpa_s->assoc_freq, 0, wpa_s->bssid,
7d878ca7 1478 wpa_s->own_addr, wpa_s->bssid,
b106173a 1479 req, sizeof(req), 0) < 0)
f049052b
BG		 1480 wpa_msg(wpa_s, MSG_INFO, "SME: Failed to send SA Query "
1481 "Request");
7d878ca7
JM		 1482}
1483
1484
1485static void sme_sa_query_timer(void *eloop_ctx, void *timeout_ctx)
1486{
1487 struct wpa_supplicant *wpa_s = eloop_ctx;
1488 unsigned int timeout, sec, usec;
1489 u8 *trans_id, *nbuf;
1490
1491 if (wpa_s->sme.sa_query_count > 0 &&
1492 sme_check_sa_query_timeout(wpa_s))
1493 return;
1494
067ffa26
JM		 1495 nbuf = os_realloc_array(wpa_s->sme.sa_query_trans_id,
1496 wpa_s->sme.sa_query_count + 1,
1497 WLAN_SA_QUERY_TR_ID_LEN);
7d878ca7
JM		 1498 if (nbuf == NULL)
1499 return;
1500 if (wpa_s->sme.sa_query_count == 0) {
1501 /* Starting a new SA Query procedure */
46b8d4c0 1502 os_get_reltime(&wpa_s->sme.sa_query_start);
7d878ca7
JM		 1503 }
1504 trans_id = nbuf + wpa_s->sme.sa_query_count * WLAN_SA_QUERY_TR_ID_LEN;
1505 wpa_s->sme.sa_query_trans_id = nbuf;
1506 wpa_s->sme.sa_query_count++;
1507
cb5ef952
JM		 1508 if (os_get_random(trans_id, WLAN_SA_QUERY_TR_ID_LEN) < 0) {
1509 wpa_printf(MSG_DEBUG, "Could not generate SA Query ID");
1510 return;
1511 }
7d878ca7
JM		 1512
1513 timeout = sa_query_retry_timeout;
1514 sec = ((timeout / 1000) * 1024) / 1000;
1515 usec = (timeout % 1000) * 1024;
1516 eloop_register_timeout(sec, usec, sme_sa_query_timer, wpa_s, NULL);
1517
f049052b
BG		 1518 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Association SA Query attempt %d",
1519 wpa_s->sme.sa_query_count);
7d878ca7
JM		 1520
1521 sme_send_sa_query_req(wpa_s, trans_id);
1522}
1523
1524
1525static void sme_start_sa_query(struct wpa_supplicant *wpa_s)
1526{
1527 sme_sa_query_timer(wpa_s, NULL);
1528}
1529
1530
19df9b07 1531static void sme_stop_sa_query(struct wpa_supplicant *wpa_s)
7d878ca7
JM		 1532{
1533 eloop_cancel_timeout(sme_sa_query_timer, wpa_s, NULL);
1534 os_free(wpa_s->sme.sa_query_trans_id);
1535 wpa_s->sme.sa_query_trans_id = NULL;
1536 wpa_s->sme.sa_query_count = 0;
1537}
1538
1539
1540void sme_event_unprot_disconnect(struct wpa_supplicant *wpa_s, const u8 *sa,
1541 const u8 *da, u16 reason_code)
1542{
1543 struct wpa_ssid *ssid;
3302b7c2 1544 struct os_reltime now;
7d878ca7 1545
7d878ca7
JM		 1546 if (wpa_s->wpa_state != WPA_COMPLETED)
1547 return;
1548 ssid = wpa_s->current_ssid;
3f56a2b7 1549 if (wpas_get_ssid_pmf(wpa_s, ssid) == NO_MGMT_FRAME_PROTECTION)
7d878ca7
JM		 1550 return;
1551 if (os_memcmp(sa, wpa_s->bssid, ETH_ALEN) != 0)
1552 return;
1553 if (reason_code != WLAN_REASON_CLASS2_FRAME_FROM_NONAUTH_STA &&
1554 reason_code != WLAN_REASON_CLASS3_FRAME_FROM_NONASSOC_STA)
1555 return;
1556 if (wpa_s->sme.sa_query_count > 0)
1557 return;
1558
3302b7c2
JM		 1559 os_get_reltime(&now);
1560 if (wpa_s->sme.last_unprot_disconnect.sec &&
1561 !os_reltime_expired(&now, &wpa_s->sme.last_unprot_disconnect, 10))
1562 return; /* limit SA Query procedure frequency */
1563 wpa_s->sme.last_unprot_disconnect = now;
1564
f049052b
BG		 1565 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Unprotected disconnect dropped - "
1566 "possible AP/STA state mismatch - trigger SA Query");
7d878ca7
JM		 1567 sme_start_sa_query(wpa_s);
1568}
1569
1570
1571void sme_sa_query_rx(struct wpa_supplicant *wpa_s, const u8 *sa,
1572 const u8 *data, size_t len)
1573{
1574 int i;
1575
1576 if (wpa_s->sme.sa_query_trans_id == NULL ||
1577 len < 1 + WLAN_SA_QUERY_TR_ID_LEN ||
1578 data[0] != WLAN_SA_QUERY_RESPONSE)
1579 return;
f049052b
BG		 1580 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Received SA Query response from "
1581 MACSTR " (trans_id %02x%02x)", MAC2STR(sa), data[1], data[2]);
7d878ca7
JM		 1582
1583 if (os_memcmp(sa, wpa_s->bssid, ETH_ALEN) != 0)
1584 return;
1585
1586 for (i = 0; i < wpa_s->sme.sa_query_count; i++) {
1587 if (os_memcmp(wpa_s->sme.sa_query_trans_id +
1588 i * WLAN_SA_QUERY_TR_ID_LEN,
1589 data + 1, WLAN_SA_QUERY_TR_ID_LEN) == 0)
1590 break;
1591 }
1592
1593 if (i >= wpa_s->sme.sa_query_count) {
f049052b
BG		 1594 wpa_dbg(wpa_s, MSG_DEBUG, "SME: No matching SA Query "
1595 "transaction identifier found");
7d878ca7
JM		 1596 return;
1597 }
1598
f049052b
BG		 1599 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Reply to pending SA Query received "
1600 "from " MACSTR, MAC2STR(sa));
7d878ca7
JM		 1601 sme_stop_sa_query(wpa_s);
1602}
1603
1604#endif /* CONFIG_IEEE80211W */
Unnamed repository; edit this file 'description' to name the repository.