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Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07001/*
2 * hostapd / IEEE 802.11 Management
Dmitry Shmidt6c0da2b2015-01-05 13:08:17 -08003 * Copyright (c) 2002-2014, Jouni Malinen <j@w1.fi>
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07004 *
Dmitry Shmidtc5ec7f52012-03-06 16:33:24 -08005 * This software may be distributed under the terms of the BSD license.
6 * See README for more details.
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07007 */
8
9#include "utils/includes.h"
10
11#ifndef CONFIG_NATIVE_WINDOWS
12
13#include "utils/common.h"
14#include "utils/eloop.h"
15#include "crypto/crypto.h"
Dmitry Shmidta54fa5f2013-01-15 13:53:35 -080016#include "crypto/sha256.h"
17#include "crypto/random.h"
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -070018#include "common/ieee802_11_defs.h"
19#include "common/ieee802_11_common.h"
20#include "common/wpa_ctrl.h"
Dmitry Shmidta54fa5f2013-01-15 13:53:35 -080021#include "common/sae.h"
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -070022#include "radius/radius.h"
23#include "radius/radius_client.h"
24#include "p2p/p2p.h"
25#include "wps/wps.h"
Dmitry Shmidtd80a4012015-11-05 16:35:40 -080026#include "fst/fst.h"
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -070027#include "hostapd.h"
28#include "beacon.h"
29#include "ieee802_11_auth.h"
30#include "sta_info.h"
31#include "ieee802_1x.h"
32#include "wpa_auth.h"
Dmitry Shmidt6c0da2b2015-01-05 13:08:17 -080033#include "pmksa_cache_auth.h"
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -070034#include "wmm.h"
35#include "ap_list.h"
36#include "accounting.h"
37#include "ap_config.h"
38#include "ap_mlme.h"
39#include "p2p_hostapd.h"
40#include "ap_drv_ops.h"
Dmitry Shmidta54fa5f2013-01-15 13:53:35 -080041#include "wnm_ap.h"
Dmitry Shmidtd80a4012015-11-05 16:35:40 -080042#include "hw_features.h"
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -070043#include "ieee802_11.h"
Dmitry Shmidtf21452a2014-02-26 10:55:25 -080044#include "dfs.h"
Dmitry Shmidt57c2d392016-02-23 13:40:19 -080045#include "mbo_ap.h"
Dmitry Shmidt849734c2016-05-27 09:59:01 -070046#include "rrm.h"
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -070047
48
49u8 * hostapd_eid_supp_rates(struct hostapd_data *hapd, u8 *eid)
50{
51 u8 *pos = eid;
52 int i, num, count;
53
54 if (hapd->iface->current_rates == NULL)
55 return eid;
56
57 *pos++ = WLAN_EID_SUPP_RATES;
58 num = hapd->iface->num_rates;
59 if (hapd->iconf->ieee80211n && hapd->iconf->require_ht)
60 num++;
Dmitry Shmidtd5e49232012-12-03 15:08:10 -080061 if (hapd->iconf->ieee80211ac && hapd->iconf->require_vht)
62 num++;
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -070063 if (num > 8) {
64 /* rest of the rates are encoded in Extended supported
65 * rates element */
66 num = 8;
67 }
68
69 *pos++ = num;
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -070070 for (i = 0, count = 0; i < hapd->iface->num_rates && count < num;
71 i++) {
72 count++;
73 *pos = hapd->iface->current_rates[i].rate / 5;
74 if (hapd->iface->current_rates[i].flags & HOSTAPD_RATE_BASIC)
75 *pos |= 0x80;
76 pos++;
77 }
78
Dmitry Shmidtd5e49232012-12-03 15:08:10 -080079 if (hapd->iconf->ieee80211n && hapd->iconf->require_ht && count < 8) {
80 count++;
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -070081 *pos++ = 0x80 | BSS_MEMBERSHIP_SELECTOR_HT_PHY;
Dmitry Shmidtd5e49232012-12-03 15:08:10 -080082 }
83
84 if (hapd->iconf->ieee80211ac && hapd->iconf->require_vht && count < 8) {
85 count++;
86 *pos++ = 0x80 | BSS_MEMBERSHIP_SELECTOR_VHT_PHY;
87 }
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -070088
89 return pos;
90}
91
92
93u8 * hostapd_eid_ext_supp_rates(struct hostapd_data *hapd, u8 *eid)
94{
95 u8 *pos = eid;
96 int i, num, count;
97
98 if (hapd->iface->current_rates == NULL)
99 return eid;
100
101 num = hapd->iface->num_rates;
102 if (hapd->iconf->ieee80211n && hapd->iconf->require_ht)
103 num++;
Dmitry Shmidtd5e49232012-12-03 15:08:10 -0800104 if (hapd->iconf->ieee80211ac && hapd->iconf->require_vht)
105 num++;
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -0700106 if (num <= 8)
107 return eid;
108 num -= 8;
109
110 *pos++ = WLAN_EID_EXT_SUPP_RATES;
111 *pos++ = num;
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -0700112 for (i = 0, count = 0; i < hapd->iface->num_rates && count < num + 8;
113 i++) {
114 count++;
115 if (count <= 8)
116 continue; /* already in SuppRates IE */
117 *pos = hapd->iface->current_rates[i].rate / 5;
118 if (hapd->iface->current_rates[i].flags & HOSTAPD_RATE_BASIC)
119 *pos |= 0x80;
120 pos++;
121 }
122
Dmitry Shmidtd5e49232012-12-03 15:08:10 -0800123 if (hapd->iconf->ieee80211n && hapd->iconf->require_ht) {
124 count++;
125 if (count > 8)
126 *pos++ = 0x80 | BSS_MEMBERSHIP_SELECTOR_HT_PHY;
127 }
128
129 if (hapd->iconf->ieee80211ac && hapd->iconf->require_vht) {
130 count++;
131 if (count > 8)
132 *pos++ = 0x80 | BSS_MEMBERSHIP_SELECTOR_VHT_PHY;
133 }
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -0700134
135 return pos;
136}
137
138
Dmitry Shmidt9d9e6022015-04-23 10:34:55 -0700139u16 hostapd_own_capab_info(struct hostapd_data *hapd)
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -0700140{
141 int capab = WLAN_CAPABILITY_ESS;
142 int privacy;
Dmitry Shmidtf21452a2014-02-26 10:55:25 -0800143 int dfs;
Dmitry Shmidt849734c2016-05-27 09:59:01 -0700144 int i;
Dmitry Shmidtf21452a2014-02-26 10:55:25 -0800145
146 /* Check if any of configured channels require DFS */
147 dfs = hostapd_is_dfs_required(hapd->iface);
148 if (dfs < 0) {
149 wpa_printf(MSG_WARNING, "Failed to check if DFS is required; ret=%d",
150 dfs);
151 dfs = 0;
152 }
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -0700153
154 if (hapd->iface->num_sta_no_short_preamble == 0 &&
155 hapd->iconf->preamble == SHORT_PREAMBLE)
156 capab |= WLAN_CAPABILITY_SHORT_PREAMBLE;
157
158 privacy = hapd->conf->ssid.wep.keys_set;
159
160 if (hapd->conf->ieee802_1x &&
161 (hapd->conf->default_wep_key_len ||
162 hapd->conf->individual_wep_key_len))
163 privacy = 1;
164
165 if (hapd->conf->wpa)
166 privacy = 1;
167
Dmitry Shmidtf21452a2014-02-26 10:55:25 -0800168#ifdef CONFIG_HS20
169 if (hapd->conf->osen)
170 privacy = 1;
171#endif /* CONFIG_HS20 */
172
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -0700173 if (privacy)
174 capab |= WLAN_CAPABILITY_PRIVACY;
175
176 if (hapd->iface->current_mode &&
177 hapd->iface->current_mode->mode == HOSTAPD_MODE_IEEE80211G &&
178 hapd->iface->num_sta_no_short_slot_time == 0)
179 capab |= WLAN_CAPABILITY_SHORT_SLOT_TIME;
180
Dmitry Shmidtf21452a2014-02-26 10:55:25 -0800181 /*
182 * Currently, Spectrum Management capability bit is set when directly
183 * requested in configuration by spectrum_mgmt_required or when AP is
184 * running on DFS channel.
185 * TODO: Also consider driver support for TPC to set Spectrum Mgmt bit
186 */
187 if (hapd->iface->current_mode &&
188 hapd->iface->current_mode->mode == HOSTAPD_MODE_IEEE80211A &&
189 (hapd->iconf->spectrum_mgmt_required || dfs))
190 capab |= WLAN_CAPABILITY_SPECTRUM_MGMT;
191
Dmitry Shmidt849734c2016-05-27 09:59:01 -0700192 for (i = 0; i < RRM_CAPABILITIES_IE_LEN; i++) {
193 if (hapd->conf->radio_measurements[i]) {
194 capab |= IEEE80211_CAP_RRM;
195 break;
196 }
197 }
Dmitry Shmidt6c0da2b2015-01-05 13:08:17 -0800198
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -0700199 return capab;
200}
201
202
Dmitry Shmidtd80a4012015-11-05 16:35:40 -0800203#ifndef CONFIG_NO_RC4
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -0700204static u16 auth_shared_key(struct hostapd_data *hapd, struct sta_info *sta,
205 u16 auth_transaction, const u8 *challenge,
206 int iswep)
207{
208 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
209 HOSTAPD_LEVEL_DEBUG,
210 "authentication (shared key, transaction %d)",
211 auth_transaction);
212
213 if (auth_transaction == 1) {
214 if (!sta->challenge) {
215 /* Generate a pseudo-random challenge */
216 u8 key[8];
Dmitry Shmidt57c2d392016-02-23 13:40:19 -0800217
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -0700218 sta->challenge = os_zalloc(WLAN_AUTH_CHALLENGE_LEN);
219 if (sta->challenge == NULL)
220 return WLAN_STATUS_UNSPECIFIED_FAILURE;
221
Dmitry Shmidt57c2d392016-02-23 13:40:19 -0800222 if (os_get_random(key, sizeof(key)) < 0) {
223 os_free(sta->challenge);
224 sta->challenge = NULL;
225 return WLAN_STATUS_UNSPECIFIED_FAILURE;
226 }
227
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -0700228 rc4_skip(key, sizeof(key), 0,
229 sta->challenge, WLAN_AUTH_CHALLENGE_LEN);
230 }
231 return 0;
232 }
233
234 if (auth_transaction != 3)
235 return WLAN_STATUS_UNSPECIFIED_FAILURE;
236
237 /* Transaction 3 */
238 if (!iswep || !sta->challenge || !challenge ||
Dmitry Shmidtc2817022014-07-02 10:32:10 -0700239 os_memcmp_const(sta->challenge, challenge,
240 WLAN_AUTH_CHALLENGE_LEN)) {
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -0700241 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
242 HOSTAPD_LEVEL_INFO,
243 "shared key authentication - invalid "
244 "challenge-response");
245 return WLAN_STATUS_CHALLENGE_FAIL;
246 }
247
248 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
249 HOSTAPD_LEVEL_DEBUG,
250 "authentication OK (shared key)");
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -0700251 sta->flags |= WLAN_STA_AUTH;
252 wpa_auth_sm_event(sta->wpa_sm, WPA_AUTH);
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -0700253 os_free(sta->challenge);
254 sta->challenge = NULL;
255
256 return 0;
257}
Dmitry Shmidtd80a4012015-11-05 16:35:40 -0800258#endif /* CONFIG_NO_RC4 */
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -0700259
260
Dmitry Shmidt57c2d392016-02-23 13:40:19 -0800261static int send_auth_reply(struct hostapd_data *hapd,
262 const u8 *dst, const u8 *bssid,
263 u16 auth_alg, u16 auth_transaction, u16 resp,
264 const u8 *ies, size_t ies_len)
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -0700265{
266 struct ieee80211_mgmt *reply;
267 u8 *buf;
268 size_t rlen;
Dmitry Shmidt57c2d392016-02-23 13:40:19 -0800269 int reply_res = WLAN_STATUS_UNSPECIFIED_FAILURE;
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -0700270
271 rlen = IEEE80211_HDRLEN + sizeof(reply->u.auth) + ies_len;
272 buf = os_zalloc(rlen);
273 if (buf == NULL)
Dmitry Shmidt57c2d392016-02-23 13:40:19 -0800274 return -1;
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -0700275
276 reply = (struct ieee80211_mgmt *) buf;
277 reply->frame_control = IEEE80211_FC(WLAN_FC_TYPE_MGMT,
278 WLAN_FC_STYPE_AUTH);
279 os_memcpy(reply->da, dst, ETH_ALEN);
280 os_memcpy(reply->sa, hapd->own_addr, ETH_ALEN);
281 os_memcpy(reply->bssid, bssid, ETH_ALEN);
282
283 reply->u.auth.auth_alg = host_to_le16(auth_alg);
284 reply->u.auth.auth_transaction = host_to_le16(auth_transaction);
285 reply->u.auth.status_code = host_to_le16(resp);
286
287 if (ies && ies_len)
288 os_memcpy(reply->u.auth.variable, ies, ies_len);
289
290 wpa_printf(MSG_DEBUG, "authentication reply: STA=" MACSTR
291 " auth_alg=%d auth_transaction=%d resp=%d (IE len=%lu)",
292 MAC2STR(dst), auth_alg, auth_transaction,
293 resp, (unsigned long) ies_len);
Dmitry Shmidt1f69aa52012-01-24 16:10:04 -0800294 if (hostapd_drv_send_mlme(hapd, reply, rlen, 0) < 0)
Dmitry Shmidt57c2d392016-02-23 13:40:19 -0800295 wpa_printf(MSG_INFO, "send_auth_reply: send failed");
296 else
297 reply_res = WLAN_STATUS_SUCCESS;
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -0700298
299 os_free(buf);
Dmitry Shmidt57c2d392016-02-23 13:40:19 -0800300
301 return reply_res;
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -0700302}
303
304
305#ifdef CONFIG_IEEE80211R
306static void handle_auth_ft_finish(void *ctx, const u8 *dst, const u8 *bssid,
307 u16 auth_transaction, u16 status,
308 const u8 *ies, size_t ies_len)
309{
310 struct hostapd_data *hapd = ctx;
311 struct sta_info *sta;
Dmitry Shmidt57c2d392016-02-23 13:40:19 -0800312 int reply_res;
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -0700313
Dmitry Shmidt57c2d392016-02-23 13:40:19 -0800314 reply_res = send_auth_reply(hapd, dst, bssid, WLAN_AUTH_FT,
315 auth_transaction, status, ies, ies_len);
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -0700316
317 sta = ap_get_sta(hapd, dst);
318 if (sta == NULL)
319 return;
320
Dmitry Shmidt57c2d392016-02-23 13:40:19 -0800321 if (sta->added_unassoc && (reply_res != WLAN_STATUS_SUCCESS ||
322 status != WLAN_STATUS_SUCCESS)) {
323 hostapd_drv_sta_remove(hapd, sta->addr);
324 sta->added_unassoc = 0;
325 return;
326 }
327
328 if (status != WLAN_STATUS_SUCCESS)
329 return;
330
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -0700331 hostapd_logger(hapd, dst, HOSTAPD_MODULE_IEEE80211,
332 HOSTAPD_LEVEL_DEBUG, "authentication OK (FT)");
333 sta->flags |= WLAN_STA_AUTH;
334 mlme_authenticate_indication(hapd, sta);
335}
336#endif /* CONFIG_IEEE80211R */
337
338
Dmitry Shmidtd5e49232012-12-03 15:08:10 -0800339#ifdef CONFIG_SAE
340
Dmitry Shmidtff787d52015-01-12 13:01:47 -0800341#define dot11RSNASAESync 5 /* attempts */
342
343
Dmitry Shmidt6c0da2b2015-01-05 13:08:17 -0800344static struct wpabuf * auth_build_sae_commit(struct hostapd_data *hapd,
345 struct sta_info *sta, int update)
Dmitry Shmidtd5e49232012-12-03 15:08:10 -0800346{
347 struct wpabuf *buf;
348
Dmitry Shmidta54fa5f2013-01-15 13:53:35 -0800349 if (hapd->conf->ssid.wpa_passphrase == NULL) {
350 wpa_printf(MSG_DEBUG, "SAE: No password available");
351 return NULL;
352 }
353
Dmitry Shmidt6c0da2b2015-01-05 13:08:17 -0800354 if (update &&
355 sae_prepare_commit(hapd->own_addr, sta->addr,
Dmitry Shmidta54fa5f2013-01-15 13:53:35 -0800356 (u8 *) hapd->conf->ssid.wpa_passphrase,
357 os_strlen(hapd->conf->ssid.wpa_passphrase),
358 sta->sae) < 0) {
359 wpa_printf(MSG_DEBUG, "SAE: Could not pick PWE");
360 return NULL;
361 }
362
Dmitry Shmidta54fa5f2013-01-15 13:53:35 -0800363 buf = wpabuf_alloc(SAE_COMMIT_MAX_LEN);
Dmitry Shmidtd5e49232012-12-03 15:08:10 -0800364 if (buf == NULL)
365 return NULL;
Dmitry Shmidt6c0da2b2015-01-05 13:08:17 -0800366 sae_write_commit(sta->sae, buf, sta->sae->tmp ?
367 sta->sae->tmp->anti_clogging_token : NULL);
Dmitry Shmidtd5e49232012-12-03 15:08:10 -0800368
369 return buf;
370}
371
372
373static struct wpabuf * auth_build_sae_confirm(struct hostapd_data *hapd,
374 struct sta_info *sta)
375{
376 struct wpabuf *buf;
377
Dmitry Shmidta54fa5f2013-01-15 13:53:35 -0800378 buf = wpabuf_alloc(SAE_CONFIRM_MAX_LEN);
Dmitry Shmidtd5e49232012-12-03 15:08:10 -0800379 if (buf == NULL)
380 return NULL;
381
Dmitry Shmidta54fa5f2013-01-15 13:53:35 -0800382 sae_write_confirm(sta->sae, buf);
Dmitry Shmidtd5e49232012-12-03 15:08:10 -0800383
384 return buf;
385}
386
387
Dmitry Shmidt6c0da2b2015-01-05 13:08:17 -0800388static int auth_sae_send_commit(struct hostapd_data *hapd,
389 struct sta_info *sta,
390 const u8 *bssid, int update)
391{
392 struct wpabuf *data;
Dmitry Shmidt57c2d392016-02-23 13:40:19 -0800393 int reply_res;
Dmitry Shmidt6c0da2b2015-01-05 13:08:17 -0800394
395 data = auth_build_sae_commit(hapd, sta, update);
396 if (data == NULL)
397 return WLAN_STATUS_UNSPECIFIED_FAILURE;
398
Dmitry Shmidt57c2d392016-02-23 13:40:19 -0800399 reply_res = send_auth_reply(hapd, sta->addr, bssid, WLAN_AUTH_SAE, 1,
400 WLAN_STATUS_SUCCESS, wpabuf_head(data),
401 wpabuf_len(data));
Dmitry Shmidt6c0da2b2015-01-05 13:08:17 -0800402
403 wpabuf_free(data);
404
Dmitry Shmidt57c2d392016-02-23 13:40:19 -0800405 return reply_res;
Dmitry Shmidt6c0da2b2015-01-05 13:08:17 -0800406}
407
408
409static int auth_sae_send_confirm(struct hostapd_data *hapd,
410 struct sta_info *sta,
411 const u8 *bssid)
412{
413 struct wpabuf *data;
Dmitry Shmidt57c2d392016-02-23 13:40:19 -0800414 int reply_res;
Dmitry Shmidt6c0da2b2015-01-05 13:08:17 -0800415
416 data = auth_build_sae_confirm(hapd, sta);
417 if (data == NULL)
418 return WLAN_STATUS_UNSPECIFIED_FAILURE;
419
Dmitry Shmidt57c2d392016-02-23 13:40:19 -0800420 reply_res = send_auth_reply(hapd, sta->addr, bssid, WLAN_AUTH_SAE, 2,
421 WLAN_STATUS_SUCCESS, wpabuf_head(data),
422 wpabuf_len(data));
Dmitry Shmidt6c0da2b2015-01-05 13:08:17 -0800423
424 wpabuf_free(data);
425
Dmitry Shmidt57c2d392016-02-23 13:40:19 -0800426 return reply_res;
Dmitry Shmidt6c0da2b2015-01-05 13:08:17 -0800427}
428
429
Dmitry Shmidta54fa5f2013-01-15 13:53:35 -0800430static int use_sae_anti_clogging(struct hostapd_data *hapd)
Dmitry Shmidtd5e49232012-12-03 15:08:10 -0800431{
Dmitry Shmidta54fa5f2013-01-15 13:53:35 -0800432 struct sta_info *sta;
433 unsigned int open = 0;
Dmitry Shmidtd5e49232012-12-03 15:08:10 -0800434
Dmitry Shmidta54fa5f2013-01-15 13:53:35 -0800435 if (hapd->conf->sae_anti_clogging_threshold == 0)
436 return 1;
437
438 for (sta = hapd->sta_list; sta; sta = sta->next) {
439 if (!sta->sae)
440 continue;
441 if (sta->sae->state != SAE_COMMITTED &&
442 sta->sae->state != SAE_CONFIRMED)
443 continue;
444 open++;
445 if (open >= hapd->conf->sae_anti_clogging_threshold)
446 return 1;
Dmitry Shmidtd5e49232012-12-03 15:08:10 -0800447 }
448
Dmitry Shmidta54fa5f2013-01-15 13:53:35 -0800449 return 0;
Dmitry Shmidtd5e49232012-12-03 15:08:10 -0800450}
451
452
Dmitry Shmidta54fa5f2013-01-15 13:53:35 -0800453static int check_sae_token(struct hostapd_data *hapd, const u8 *addr,
454 const u8 *token, size_t token_len)
Dmitry Shmidtd5e49232012-12-03 15:08:10 -0800455{
Dmitry Shmidta54fa5f2013-01-15 13:53:35 -0800456 u8 mac[SHA256_MAC_LEN];
Dmitry Shmidtd5e49232012-12-03 15:08:10 -0800457
Dmitry Shmidta54fa5f2013-01-15 13:53:35 -0800458 if (token_len != SHA256_MAC_LEN)
459 return -1;
460 if (hmac_sha256(hapd->sae_token_key, sizeof(hapd->sae_token_key),
461 addr, ETH_ALEN, mac) < 0 ||
Dmitry Shmidtc2817022014-07-02 10:32:10 -0700462 os_memcmp_const(token, mac, SHA256_MAC_LEN) != 0)
Dmitry Shmidta54fa5f2013-01-15 13:53:35 -0800463 return -1;
Dmitry Shmidtd5e49232012-12-03 15:08:10 -0800464
Dmitry Shmidta54fa5f2013-01-15 13:53:35 -0800465 return 0;
466}
Dmitry Shmidtd5e49232012-12-03 15:08:10 -0800467
Dmitry Shmidta54fa5f2013-01-15 13:53:35 -0800468
469static struct wpabuf * auth_build_token_req(struct hostapd_data *hapd,
Dmitry Shmidt6c0da2b2015-01-05 13:08:17 -0800470 int group, const u8 *addr)
Dmitry Shmidta54fa5f2013-01-15 13:53:35 -0800471{
472 struct wpabuf *buf;
473 u8 *token;
Dmitry Shmidt04f534e2013-12-09 15:50:16 -0800474 struct os_reltime now;
Dmitry Shmidta54fa5f2013-01-15 13:53:35 -0800475
Dmitry Shmidt04f534e2013-12-09 15:50:16 -0800476 os_get_reltime(&now);
477 if (!os_reltime_initialized(&hapd->last_sae_token_key_update) ||
478 os_reltime_expired(&now, &hapd->last_sae_token_key_update, 60)) {
Dmitry Shmidta54fa5f2013-01-15 13:53:35 -0800479 if (random_get_bytes(hapd->sae_token_key,
480 sizeof(hapd->sae_token_key)) < 0)
481 return NULL;
482 wpa_hexdump(MSG_DEBUG, "SAE: Updated token key",
483 hapd->sae_token_key, sizeof(hapd->sae_token_key));
Dmitry Shmidt04f534e2013-12-09 15:50:16 -0800484 hapd->last_sae_token_key_update = now;
Dmitry Shmidta54fa5f2013-01-15 13:53:35 -0800485 }
486
Dmitry Shmidt6c0da2b2015-01-05 13:08:17 -0800487 buf = wpabuf_alloc(sizeof(le16) + SHA256_MAC_LEN);
Dmitry Shmidta54fa5f2013-01-15 13:53:35 -0800488 if (buf == NULL)
489 return NULL;
490
Dmitry Shmidt6c0da2b2015-01-05 13:08:17 -0800491 wpabuf_put_le16(buf, group); /* Finite Cyclic Group */
492
Dmitry Shmidta54fa5f2013-01-15 13:53:35 -0800493 token = wpabuf_put(buf, SHA256_MAC_LEN);
494 hmac_sha256(hapd->sae_token_key, sizeof(hapd->sae_token_key),
495 addr, ETH_ALEN, token);
496
497 return buf;
Dmitry Shmidtd5e49232012-12-03 15:08:10 -0800498}
499
500
Dmitry Shmidtff787d52015-01-12 13:01:47 -0800501static int sae_check_big_sync(struct sta_info *sta)
502{
503 if (sta->sae->sync > dot11RSNASAESync) {
504 sta->sae->state = SAE_NOTHING;
505 sta->sae->sync = 0;
506 return -1;
507 }
508 return 0;
509}
510
511
512static void auth_sae_retransmit_timer(void *eloop_ctx, void *eloop_data)
513{
514 struct hostapd_data *hapd = eloop_ctx;
515 struct sta_info *sta = eloop_data;
516 int ret;
517
518 if (sae_check_big_sync(sta))
519 return;
520 sta->sae->sync++;
Dmitry Shmidtd5ab1b52016-06-21 12:38:41 -0700521 wpa_printf(MSG_DEBUG, "SAE: Auth SAE retransmit timer for " MACSTR
522 " (sync=%d state=%d)",
523 MAC2STR(sta->addr), sta->sae->sync, sta->sae->state);
Dmitry Shmidtff787d52015-01-12 13:01:47 -0800524
525 switch (sta->sae->state) {
526 case SAE_COMMITTED:
527 ret = auth_sae_send_commit(hapd, sta, hapd->own_addr, 0);
Dmitry Shmidtd80a4012015-11-05 16:35:40 -0800528 eloop_register_timeout(0,
529 hapd->dot11RSNASAERetransPeriod * 1000,
Dmitry Shmidtff787d52015-01-12 13:01:47 -0800530 auth_sae_retransmit_timer, hapd, sta);
531 break;
532 case SAE_CONFIRMED:
533 ret = auth_sae_send_confirm(hapd, sta, hapd->own_addr);
Dmitry Shmidtd80a4012015-11-05 16:35:40 -0800534 eloop_register_timeout(0,
535 hapd->dot11RSNASAERetransPeriod * 1000,
Dmitry Shmidtff787d52015-01-12 13:01:47 -0800536 auth_sae_retransmit_timer, hapd, sta);
537 break;
538 default:
539 ret = -1;
540 break;
541 }
542
543 if (ret != WLAN_STATUS_SUCCESS)
544 wpa_printf(MSG_INFO, "SAE: Failed to retransmit: ret=%d", ret);
545}
546
547
548void sae_clear_retransmit_timer(struct hostapd_data *hapd, struct sta_info *sta)
549{
550 eloop_cancel_timeout(auth_sae_retransmit_timer, hapd, sta);
551}
552
553
554static void sae_set_retransmit_timer(struct hostapd_data *hapd,
555 struct sta_info *sta)
556{
557 if (!(hapd->conf->mesh & MESH_ENABLED))
558 return;
559
560 eloop_cancel_timeout(auth_sae_retransmit_timer, hapd, sta);
Dmitry Shmidtd80a4012015-11-05 16:35:40 -0800561 eloop_register_timeout(0, hapd->dot11RSNASAERetransPeriod * 1000,
Dmitry Shmidtff787d52015-01-12 13:01:47 -0800562 auth_sae_retransmit_timer, hapd, sta);
563}
564
565
Dmitry Shmidte4663042016-04-04 10:07:49 -0700566void sae_accept_sta(struct hostapd_data *hapd, struct sta_info *sta)
567{
568 sta->flags |= WLAN_STA_AUTH;
569 sta->auth_alg = WLAN_AUTH_SAE;
570 mlme_authenticate_indication(hapd, sta);
571 wpa_auth_sm_event(sta->wpa_sm, WPA_AUTH);
572 sta->sae->state = SAE_ACCEPTED;
573 wpa_auth_pmksa_add_sae(hapd->wpa_auth, sta->addr,
574 sta->sae->pmk, sta->sae->pmkid);
575}
576
577
Dmitry Shmidt6c0da2b2015-01-05 13:08:17 -0800578static int sae_sm_step(struct hostapd_data *hapd, struct sta_info *sta,
579 const u8 *bssid, u8 auth_transaction)
580{
581 int ret;
582
583 if (auth_transaction != 1 && auth_transaction != 2)
584 return WLAN_STATUS_UNSPECIFIED_FAILURE;
585
586 switch (sta->sae->state) {
587 case SAE_NOTHING:
588 if (auth_transaction == 1) {
589 ret = auth_sae_send_commit(hapd, sta, bssid, 1);
590 if (ret)
591 return ret;
592 sta->sae->state = SAE_COMMITTED;
593
594 if (sae_process_commit(sta->sae) < 0)
595 return WLAN_STATUS_UNSPECIFIED_FAILURE;
596
597 /*
598 * In mesh case, both Commit and Confirm can be sent
599 * immediately. In infrastructure BSS, only a single
600 * Authentication frame (Commit) is expected from the AP
601 * here and the second one (Confirm) will be sent once
602 * the STA has sent its second Authentication frame
603 * (Confirm).
604 */
605 if (hapd->conf->mesh & MESH_ENABLED) {
606 /*
607 * Send both Commit and Confirm immediately
608 * based on SAE finite state machine
609 * Nothing -> Confirm transition.
610 */
611 ret = auth_sae_send_confirm(hapd, sta, bssid);
612 if (ret)
613 return ret;
614 sta->sae->state = SAE_CONFIRMED;
615 } else {
616 /*
617 * For infrastructure BSS, send only the Commit
618 * message now to get alternating sequence of
619 * Authentication frames between the AP and STA.
620 * Confirm will be sent in
621 * Commited -> Confirmed/Accepted transition
622 * when receiving Confirm from STA.
623 */
624 }
Dmitry Shmidtff787d52015-01-12 13:01:47 -0800625 sta->sae->sync = 0;
626 sae_set_retransmit_timer(hapd, sta);
Dmitry Shmidt6c0da2b2015-01-05 13:08:17 -0800627 } else {
628 hostapd_logger(hapd, sta->addr,
629 HOSTAPD_MODULE_IEEE80211,
630 HOSTAPD_LEVEL_DEBUG,
631 "SAE confirm before commit");
632 }
633 break;
634 case SAE_COMMITTED:
Dmitry Shmidtff787d52015-01-12 13:01:47 -0800635 sae_clear_retransmit_timer(hapd, sta);
Dmitry Shmidt6c0da2b2015-01-05 13:08:17 -0800636 if (auth_transaction == 1) {
637 if (sae_process_commit(sta->sae) < 0)
638 return WLAN_STATUS_UNSPECIFIED_FAILURE;
639
640 ret = auth_sae_send_confirm(hapd, sta, bssid);
641 if (ret)
642 return ret;
643 sta->sae->state = SAE_CONFIRMED;
Dmitry Shmidtff787d52015-01-12 13:01:47 -0800644 sta->sae->sync = 0;
645 sae_set_retransmit_timer(hapd, sta);
Dmitry Shmidt6c0da2b2015-01-05 13:08:17 -0800646 } else if (hapd->conf->mesh & MESH_ENABLED) {
647 /*
648 * In mesh case, follow SAE finite state machine and
Dmitry Shmidtff787d52015-01-12 13:01:47 -0800649 * send Commit now, if sync count allows.
Dmitry Shmidt6c0da2b2015-01-05 13:08:17 -0800650 */
Dmitry Shmidtff787d52015-01-12 13:01:47 -0800651 if (sae_check_big_sync(sta))
652 return WLAN_STATUS_SUCCESS;
653 sta->sae->sync++;
654
Dmitry Shmidt1d755d02015-04-28 10:34:29 -0700655 ret = auth_sae_send_commit(hapd, sta, bssid, 0);
Dmitry Shmidt6c0da2b2015-01-05 13:08:17 -0800656 if (ret)
657 return ret;
Dmitry Shmidtff787d52015-01-12 13:01:47 -0800658
659 sae_set_retransmit_timer(hapd, sta);
Dmitry Shmidt6c0da2b2015-01-05 13:08:17 -0800660 } else {
661 /*
662 * For instructure BSS, send the postponed Confirm from
663 * Nothing -> Confirmed transition that was reduced to
664 * Nothing -> Committed above.
665 */
666 ret = auth_sae_send_confirm(hapd, sta, bssid);
667 if (ret)
668 return ret;
669
670 sta->sae->state = SAE_CONFIRMED;
671
672 /*
673 * Since this was triggered on Confirm RX, run another
674 * step to get to Accepted without waiting for
675 * additional events.
676 */
677 return sae_sm_step(hapd, sta, bssid, auth_transaction);
678 }
679 break;
680 case SAE_CONFIRMED:
Dmitry Shmidtff787d52015-01-12 13:01:47 -0800681 sae_clear_retransmit_timer(hapd, sta);
Dmitry Shmidt6c0da2b2015-01-05 13:08:17 -0800682 if (auth_transaction == 1) {
Dmitry Shmidtff787d52015-01-12 13:01:47 -0800683 if (sae_check_big_sync(sta))
684 return WLAN_STATUS_SUCCESS;
685 sta->sae->sync++;
686
Dmitry Shmidt6c0da2b2015-01-05 13:08:17 -0800687 ret = auth_sae_send_commit(hapd, sta, bssid, 1);
688 if (ret)
689 return ret;
690
691 if (sae_process_commit(sta->sae) < 0)
692 return WLAN_STATUS_UNSPECIFIED_FAILURE;
693
694 ret = auth_sae_send_confirm(hapd, sta, bssid);
695 if (ret)
696 return ret;
Dmitry Shmidtff787d52015-01-12 13:01:47 -0800697
698 sae_set_retransmit_timer(hapd, sta);
Dmitry Shmidt6c0da2b2015-01-05 13:08:17 -0800699 } else {
Dmitry Shmidte4663042016-04-04 10:07:49 -0700700 sae_accept_sta(hapd, sta);
Dmitry Shmidt6c0da2b2015-01-05 13:08:17 -0800701 }
702 break;
703 case SAE_ACCEPTED:
704 if (auth_transaction == 1) {
705 wpa_printf(MSG_DEBUG, "SAE: remove the STA (" MACSTR
706 ") doing reauthentication",
707 MAC2STR(sta->addr));
708 ap_free_sta(hapd, sta);
Dmitry Shmidte4663042016-04-04 10:07:49 -0700709 wpa_auth_pmksa_remove(hapd->wpa_auth, sta->addr);
Dmitry Shmidt6c0da2b2015-01-05 13:08:17 -0800710 } else {
Dmitry Shmidtff787d52015-01-12 13:01:47 -0800711 if (sae_check_big_sync(sta))
712 return WLAN_STATUS_SUCCESS;
713 sta->sae->sync++;
714
Dmitry Shmidt6c0da2b2015-01-05 13:08:17 -0800715 ret = auth_sae_send_confirm(hapd, sta, bssid);
716 sae_clear_temp_data(sta->sae);
717 if (ret)
718 return ret;
719 }
720 break;
721 default:
722 wpa_printf(MSG_ERROR, "SAE: invalid state %d",
723 sta->sae->state);
724 return WLAN_STATUS_UNSPECIFIED_FAILURE;
725 }
726 return WLAN_STATUS_SUCCESS;
727}
728
729
Dmitry Shmidtd5ab1b52016-06-21 12:38:41 -0700730static void sae_pick_next_group(struct hostapd_data *hapd, struct sta_info *sta)
731{
732 struct sae_data *sae = sta->sae;
733 int i, *groups = hapd->conf->sae_groups;
734
735 if (sae->state != SAE_COMMITTED)
736 return;
737
738 wpa_printf(MSG_DEBUG, "SAE: Previously selected group: %d", sae->group);
739
740 for (i = 0; groups && groups[i] > 0; i++) {
741 if (sae->group == groups[i])
742 break;
743 }
744
745 if (!groups || groups[i] <= 0) {
746 wpa_printf(MSG_DEBUG,
747 "SAE: Previously selected group not found from the current configuration");
748 return;
749 }
750
751 for (;;) {
752 i++;
753 if (groups[i] <= 0) {
754 wpa_printf(MSG_DEBUG,
755 "SAE: No alternative group enabled");
756 return;
757 }
758
759 if (sae_set_group(sae, groups[i]) < 0)
760 continue;
761
762 break;
763 }
764 wpa_printf(MSG_DEBUG, "SAE: Selected new group: %d", groups[i]);
765}
766
767
Dmitry Shmidtd5e49232012-12-03 15:08:10 -0800768static void handle_auth_sae(struct hostapd_data *hapd, struct sta_info *sta,
769 const struct ieee80211_mgmt *mgmt, size_t len,
Dmitry Shmidt6c0da2b2015-01-05 13:08:17 -0800770 u16 auth_transaction, u16 status_code)
Dmitry Shmidtd5e49232012-12-03 15:08:10 -0800771{
Dmitry Shmidt57c2d392016-02-23 13:40:19 -0800772 int resp = WLAN_STATUS_SUCCESS;
Dmitry Shmidta54fa5f2013-01-15 13:53:35 -0800773 struct wpabuf *data = NULL;
774
775 if (!sta->sae) {
Dmitry Shmidt57c2d392016-02-23 13:40:19 -0800776 if (auth_transaction != 1 ||
777 status_code != WLAN_STATUS_SUCCESS) {
778 resp = -1;
779 goto remove_sta;
780 }
Dmitry Shmidta54fa5f2013-01-15 13:53:35 -0800781 sta->sae = os_zalloc(sizeof(*sta->sae));
Dmitry Shmidt57c2d392016-02-23 13:40:19 -0800782 if (!sta->sae) {
783 resp = -1;
784 goto remove_sta;
785 }
Dmitry Shmidta54fa5f2013-01-15 13:53:35 -0800786 sta->sae->state = SAE_NOTHING;
Dmitry Shmidtff787d52015-01-12 13:01:47 -0800787 sta->sae->sync = 0;
Dmitry Shmidta54fa5f2013-01-15 13:53:35 -0800788 }
Dmitry Shmidtd5e49232012-12-03 15:08:10 -0800789
Dmitry Shmidte4663042016-04-04 10:07:49 -0700790 if (sta->mesh_sae_pmksa_caching) {
791 wpa_printf(MSG_DEBUG,
792 "SAE: Cancel use of mesh PMKSA caching because peer starts SAE authentication");
793 wpa_auth_pmksa_remove(hapd->wpa_auth, sta->addr);
794 sta->mesh_sae_pmksa_caching = 0;
795 }
796
Dmitry Shmidtd5e49232012-12-03 15:08:10 -0800797 if (auth_transaction == 1) {
Dmitry Shmidt6c0da2b2015-01-05 13:08:17 -0800798 const u8 *token = NULL, *pos, *end;
Dmitry Shmidta54fa5f2013-01-15 13:53:35 -0800799 size_t token_len = 0;
Dmitry Shmidtd5e49232012-12-03 15:08:10 -0800800 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
801 HOSTAPD_LEVEL_DEBUG,
Dmitry Shmidt6c0da2b2015-01-05 13:08:17 -0800802 "start SAE authentication (RX commit, status=%u)",
803 status_code);
804
805 if ((hapd->conf->mesh & MESH_ENABLED) &&
806 status_code == WLAN_STATUS_ANTI_CLOGGING_TOKEN_REQ &&
807 sta->sae->tmp) {
808 pos = mgmt->u.auth.variable;
809 end = ((const u8 *) mgmt) + len;
810 if (pos + sizeof(le16) > end) {
811 wpa_printf(MSG_ERROR,
812 "SAE: Too short anti-clogging token request");
813 resp = WLAN_STATUS_UNSPECIFIED_FAILURE;
814 goto reply;
815 }
816 resp = sae_group_allowed(sta->sae,
817 hapd->conf->sae_groups,
818 WPA_GET_LE16(pos));
819 if (resp != WLAN_STATUS_SUCCESS) {
820 wpa_printf(MSG_ERROR,
821 "SAE: Invalid group in anti-clogging token request");
822 goto reply;
823 }
824 pos += sizeof(le16);
825
826 wpabuf_free(sta->sae->tmp->anti_clogging_token);
827 sta->sae->tmp->anti_clogging_token =
828 wpabuf_alloc_copy(pos, end - pos);
829 if (sta->sae->tmp->anti_clogging_token == NULL) {
830 wpa_printf(MSG_ERROR,
831 "SAE: Failed to alloc for anti-clogging token");
Dmitry Shmidt57c2d392016-02-23 13:40:19 -0800832 resp = WLAN_STATUS_UNSPECIFIED_FAILURE;
833 goto remove_sta;
Dmitry Shmidt6c0da2b2015-01-05 13:08:17 -0800834 }
835
836 /*
837 * IEEE Std 802.11-2012, 11.3.8.6.4: If the Status code
838 * is 76, a new Commit Message shall be constructed
839 * with the Anti-Clogging Token from the received
840 * Authentication frame, and the commit-scalar and
841 * COMMIT-ELEMENT previously sent.
842 */
Dmitry Shmidt57c2d392016-02-23 13:40:19 -0800843 resp = auth_sae_send_commit(hapd, sta, mgmt->bssid, 0);
844 if (resp != WLAN_STATUS_SUCCESS) {
Dmitry Shmidt6c0da2b2015-01-05 13:08:17 -0800845 wpa_printf(MSG_ERROR,
846 "SAE: Failed to send commit message");
Dmitry Shmidt57c2d392016-02-23 13:40:19 -0800847 goto remove_sta;
Dmitry Shmidt6c0da2b2015-01-05 13:08:17 -0800848 }
849 sta->sae->state = SAE_COMMITTED;
Dmitry Shmidtff787d52015-01-12 13:01:47 -0800850 sta->sae->sync = 0;
851 sae_set_retransmit_timer(hapd, sta);
Dmitry Shmidt6c0da2b2015-01-05 13:08:17 -0800852 return;
853 }
854
Dmitry Shmidtd5ab1b52016-06-21 12:38:41 -0700855 if ((hapd->conf->mesh & MESH_ENABLED) &&
856 status_code ==
857 WLAN_STATUS_FINITE_CYCLIC_GROUP_NOT_SUPPORTED &&
858 sta->sae->tmp) {
859 wpa_printf(MSG_DEBUG,
860 "SAE: Peer did not accept our SAE group");
861 sae_pick_next_group(hapd, sta);
862 goto remove_sta;
863 }
864
Dmitry Shmidt6c0da2b2015-01-05 13:08:17 -0800865 if (status_code != WLAN_STATUS_SUCCESS)
Dmitry Shmidt57c2d392016-02-23 13:40:19 -0800866 goto remove_sta;
Dmitry Shmidt6c0da2b2015-01-05 13:08:17 -0800867
Dmitry Shmidta54fa5f2013-01-15 13:53:35 -0800868 resp = sae_parse_commit(sta->sae, mgmt->u.auth.variable,
869 ((const u8 *) mgmt) + len -
870 mgmt->u.auth.variable, &token,
871 &token_len, hapd->conf->sae_groups);
Dmitry Shmidt41712582015-06-29 11:02:15 -0700872 if (resp == SAE_SILENTLY_DISCARD) {
873 wpa_printf(MSG_DEBUG,
874 "SAE: Drop commit message from " MACSTR " due to reflection attack",
875 MAC2STR(sta->addr));
Dmitry Shmidt57c2d392016-02-23 13:40:19 -0800876 goto remove_sta;
Dmitry Shmidt41712582015-06-29 11:02:15 -0700877 }
Dmitry Shmidta54fa5f2013-01-15 13:53:35 -0800878 if (token && check_sae_token(hapd, sta->addr, token, token_len)
879 < 0) {
880 wpa_printf(MSG_DEBUG, "SAE: Drop commit message with "
881 "incorrect token from " MACSTR,
882 MAC2STR(sta->addr));
Dmitry Shmidt57c2d392016-02-23 13:40:19 -0800883 resp = WLAN_STATUS_UNSPECIFIED_FAILURE;
884 goto remove_sta;
Dmitry Shmidta54fa5f2013-01-15 13:53:35 -0800885 }
886
Dmitry Shmidt6c0da2b2015-01-05 13:08:17 -0800887 if (resp != WLAN_STATUS_SUCCESS)
888 goto reply;
889
890 if (!token && use_sae_anti_clogging(hapd)) {
891 wpa_printf(MSG_DEBUG,
892 "SAE: Request anti-clogging token from "
893 MACSTR, MAC2STR(sta->addr));
894 data = auth_build_token_req(hapd, sta->sae->group,
895 sta->addr);
896 resp = WLAN_STATUS_ANTI_CLOGGING_TOKEN_REQ;
897 if (hapd->conf->mesh & MESH_ENABLED)
898 sta->sae->state = SAE_NOTHING;
899 goto reply;
Dmitry Shmidta54fa5f2013-01-15 13:53:35 -0800900 }
Dmitry Shmidt6c0da2b2015-01-05 13:08:17 -0800901
902 resp = sae_sm_step(hapd, sta, mgmt->bssid, auth_transaction);
Dmitry Shmidtd5e49232012-12-03 15:08:10 -0800903 } else if (auth_transaction == 2) {
Dmitry Shmidtd5e49232012-12-03 15:08:10 -0800904 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
905 HOSTAPD_LEVEL_DEBUG,
Dmitry Shmidt6c0da2b2015-01-05 13:08:17 -0800906 "SAE authentication (RX confirm, status=%u)",
907 status_code);
908 if (status_code != WLAN_STATUS_SUCCESS)
Dmitry Shmidt57c2d392016-02-23 13:40:19 -0800909 goto remove_sta;
Dmitry Shmidt6c0da2b2015-01-05 13:08:17 -0800910 if (sta->sae->state >= SAE_CONFIRMED ||
911 !(hapd->conf->mesh & MESH_ENABLED)) {
912 if (sae_check_confirm(sta->sae, mgmt->u.auth.variable,
913 ((u8 *) mgmt) + len -
914 mgmt->u.auth.variable) < 0) {
Dmitry Shmidta54fa5f2013-01-15 13:53:35 -0800915 resp = WLAN_STATUS_UNSPECIFIED_FAILURE;
Dmitry Shmidt6c0da2b2015-01-05 13:08:17 -0800916 goto reply;
Dmitry Shmidta54fa5f2013-01-15 13:53:35 -0800917 }
Dmitry Shmidtd5e49232012-12-03 15:08:10 -0800918 }
Dmitry Shmidt6c0da2b2015-01-05 13:08:17 -0800919 resp = sae_sm_step(hapd, sta, mgmt->bssid, auth_transaction);
Dmitry Shmidtd5e49232012-12-03 15:08:10 -0800920 } else {
921 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
922 HOSTAPD_LEVEL_DEBUG,
Dmitry Shmidt6c0da2b2015-01-05 13:08:17 -0800923 "unexpected SAE authentication transaction %u (status=%u)",
924 auth_transaction, status_code);
925 if (status_code != WLAN_STATUS_SUCCESS)
Dmitry Shmidt57c2d392016-02-23 13:40:19 -0800926 goto remove_sta;
Dmitry Shmidtd5e49232012-12-03 15:08:10 -0800927 resp = WLAN_STATUS_UNKNOWN_AUTH_TRANSACTION;
928 }
929
Dmitry Shmidt6c0da2b2015-01-05 13:08:17 -0800930reply:
931 if (resp != WLAN_STATUS_SUCCESS) {
932 send_auth_reply(hapd, mgmt->sa, mgmt->bssid, WLAN_AUTH_SAE,
933 auth_transaction, resp,
934 data ? wpabuf_head(data) : (u8 *) "",
935 data ? wpabuf_len(data) : 0);
936 }
Dmitry Shmidt57c2d392016-02-23 13:40:19 -0800937
938remove_sta:
939 if (sta->added_unassoc && (resp != WLAN_STATUS_SUCCESS ||
940 status_code != WLAN_STATUS_SUCCESS)) {
941 hostapd_drv_sta_remove(hapd, sta->addr);
942 sta->added_unassoc = 0;
943 }
Dmitry Shmidtd5e49232012-12-03 15:08:10 -0800944 wpabuf_free(data);
945}
Dmitry Shmidtff787d52015-01-12 13:01:47 -0800946
947
948/**
949 * auth_sae_init_committed - Send COMMIT and start SAE in committed state
950 * @hapd: BSS data for the device initiating the authentication
951 * @sta: the peer to which commit authentication frame is sent
952 *
953 * This function implements Init event handling (IEEE Std 802.11-2012,
954 * 11.3.8.6.3) in which initial COMMIT message is sent. Prior to calling, the
955 * sta->sae structure should be initialized appropriately via a call to
956 * sae_prepare_commit().
957 */
958int auth_sae_init_committed(struct hostapd_data *hapd, struct sta_info *sta)
959{
960 int ret;
961
962 if (!sta->sae || !sta->sae->tmp)
963 return -1;
964
965 if (sta->sae->state != SAE_NOTHING)
966 return -1;
967
968 ret = auth_sae_send_commit(hapd, sta, hapd->own_addr, 0);
969 if (ret)
970 return -1;
971
972 sta->sae->state = SAE_COMMITTED;
973 sta->sae->sync = 0;
974 sae_set_retransmit_timer(hapd, sta);
975
976 return 0;
977}
978
Dmitry Shmidtd5e49232012-12-03 15:08:10 -0800979#endif /* CONFIG_SAE */
980
981
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -0700982static void handle_auth(struct hostapd_data *hapd,
983 const struct ieee80211_mgmt *mgmt, size_t len)
984{
985 u16 auth_alg, auth_transaction, status_code;
986 u16 resp = WLAN_STATUS_SUCCESS;
987 struct sta_info *sta = NULL;
Dmitry Shmidt57c2d392016-02-23 13:40:19 -0800988 int res, reply_res;
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -0700989 u16 fc;
990 const u8 *challenge = NULL;
991 u32 session_timeout, acct_interim_interval;
Dmitry Shmidt57c2d392016-02-23 13:40:19 -0800992 struct vlan_description vlan_id;
Dmitry Shmidtd5e49232012-12-03 15:08:10 -0800993 struct hostapd_sta_wpa_psk_short *psk = NULL;
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -0700994 u8 resp_ies[2 + WLAN_AUTH_CHALLENGE_LEN];
995 size_t resp_ies_len = 0;
Dmitry Shmidt61d9df32012-08-29 16:22:06 -0700996 char *identity = NULL;
997 char *radius_cui = NULL;
Dmitry Shmidt6c0da2b2015-01-05 13:08:17 -0800998 u16 seq_ctrl;
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -0700999
Dmitry Shmidt57c2d392016-02-23 13:40:19 -08001000 os_memset(&vlan_id, 0, sizeof(vlan_id));
1001
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07001002 if (len < IEEE80211_HDRLEN + sizeof(mgmt->u.auth)) {
Dmitry Shmidtcce06662013-11-04 18:44:24 -08001003 wpa_printf(MSG_INFO, "handle_auth - too short payload (len=%lu)",
1004 (unsigned long) len);
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07001005 return;
1006 }
1007
Dmitry Shmidt8da800a2013-04-24 12:57:01 -07001008#ifdef CONFIG_TESTING_OPTIONS
Dmitry Shmidt7832adb2014-04-29 10:53:02 -07001009 if (hapd->iconf->ignore_auth_probability > 0.0 &&
Dmitry Shmidt8da800a2013-04-24 12:57:01 -07001010 drand48() < hapd->iconf->ignore_auth_probability) {
1011 wpa_printf(MSG_INFO,
1012 "TESTING: ignoring auth frame from " MACSTR,
1013 MAC2STR(mgmt->sa));
1014 return;
1015 }
1016#endif /* CONFIG_TESTING_OPTIONS */
1017
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07001018 auth_alg = le_to_host16(mgmt->u.auth.auth_alg);
1019 auth_transaction = le_to_host16(mgmt->u.auth.auth_transaction);
1020 status_code = le_to_host16(mgmt->u.auth.status_code);
1021 fc = le_to_host16(mgmt->frame_control);
Dmitry Shmidt6c0da2b2015-01-05 13:08:17 -08001022 seq_ctrl = le_to_host16(mgmt->seq_ctrl);
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07001023
1024 if (len >= IEEE80211_HDRLEN + sizeof(mgmt->u.auth) +
1025 2 + WLAN_AUTH_CHALLENGE_LEN &&
1026 mgmt->u.auth.variable[0] == WLAN_EID_CHALLENGE &&
1027 mgmt->u.auth.variable[1] == WLAN_AUTH_CHALLENGE_LEN)
1028 challenge = &mgmt->u.auth.variable[2];
1029
1030 wpa_printf(MSG_DEBUG, "authentication: STA=" MACSTR " auth_alg=%d "
Dmitry Shmidt6c0da2b2015-01-05 13:08:17 -08001031 "auth_transaction=%d status_code=%d wep=%d%s "
1032 "seq_ctrl=0x%x%s",
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07001033 MAC2STR(mgmt->sa), auth_alg, auth_transaction,
1034 status_code, !!(fc & WLAN_FC_ISWEP),
Dmitry Shmidt6c0da2b2015-01-05 13:08:17 -08001035 challenge ? " challenge" : "",
1036 seq_ctrl, (fc & WLAN_FC_RETRY) ? " retry" : "");
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07001037
Dmitry Shmidtd80a4012015-11-05 16:35:40 -08001038#ifdef CONFIG_NO_RC4
1039 if (auth_alg == WLAN_AUTH_SHARED_KEY) {
1040 wpa_printf(MSG_INFO,
1041 "Unsupported authentication algorithm (%d)",
1042 auth_alg);
1043 resp = WLAN_STATUS_NOT_SUPPORTED_AUTH_ALG;
1044 goto fail;
1045 }
1046#endif /* CONFIG_NO_RC4 */
1047
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07001048 if (hapd->tkip_countermeasures) {
1049 resp = WLAN_REASON_MICHAEL_MIC_FAILURE;
1050 goto fail;
1051 }
1052
1053 if (!(((hapd->conf->auth_algs & WPA_AUTH_ALG_OPEN) &&
1054 auth_alg == WLAN_AUTH_OPEN) ||
1055#ifdef CONFIG_IEEE80211R
Dmitry Shmidt1f69aa52012-01-24 16:10:04 -08001056 (hapd->conf->wpa && wpa_key_mgmt_ft(hapd->conf->wpa_key_mgmt) &&
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07001057 auth_alg == WLAN_AUTH_FT) ||
1058#endif /* CONFIG_IEEE80211R */
Dmitry Shmidtd5e49232012-12-03 15:08:10 -08001059#ifdef CONFIG_SAE
1060 (hapd->conf->wpa && wpa_key_mgmt_sae(hapd->conf->wpa_key_mgmt) &&
1061 auth_alg == WLAN_AUTH_SAE) ||
1062#endif /* CONFIG_SAE */
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07001063 ((hapd->conf->auth_algs & WPA_AUTH_ALG_SHARED) &&
1064 auth_alg == WLAN_AUTH_SHARED_KEY))) {
Dmitry Shmidtcce06662013-11-04 18:44:24 -08001065 wpa_printf(MSG_INFO, "Unsupported authentication algorithm (%d)",
1066 auth_alg);
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07001067 resp = WLAN_STATUS_NOT_SUPPORTED_AUTH_ALG;
1068 goto fail;
1069 }
1070
Dmitry Shmidtd5e49232012-12-03 15:08:10 -08001071 if (!(auth_transaction == 1 || auth_alg == WLAN_AUTH_SAE ||
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07001072 (auth_alg == WLAN_AUTH_SHARED_KEY && auth_transaction == 3))) {
Dmitry Shmidtcce06662013-11-04 18:44:24 -08001073 wpa_printf(MSG_INFO, "Unknown authentication transaction number (%d)",
1074 auth_transaction);
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07001075 resp = WLAN_STATUS_UNKNOWN_AUTH_TRANSACTION;
1076 goto fail;
1077 }
1078
1079 if (os_memcmp(mgmt->sa, hapd->own_addr, ETH_ALEN) == 0) {
Dmitry Shmidtcce06662013-11-04 18:44:24 -08001080 wpa_printf(MSG_INFO, "Station " MACSTR " not allowed to authenticate",
1081 MAC2STR(mgmt->sa));
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07001082 resp = WLAN_STATUS_UNSPECIFIED_FAILURE;
1083 goto fail;
1084 }
1085
Dmitry Shmidtd80a4012015-11-05 16:35:40 -08001086 if (hapd->conf->no_auth_if_seen_on) {
1087 struct hostapd_data *other;
1088
1089 other = sta_track_seen_on(hapd->iface, mgmt->sa,
1090 hapd->conf->no_auth_if_seen_on);
1091 if (other) {
1092 u8 *pos;
1093 u32 info;
1094 u8 op_class, channel, phytype;
1095
1096 wpa_printf(MSG_DEBUG, "%s: Reject authentication from "
1097 MACSTR " since STA has been seen on %s",
1098 hapd->conf->iface, MAC2STR(mgmt->sa),
1099 hapd->conf->no_auth_if_seen_on);
1100
1101 resp = WLAN_STATUS_REJECTED_WITH_SUGGESTED_BSS_TRANSITION;
1102 pos = &resp_ies[0];
1103 *pos++ = WLAN_EID_NEIGHBOR_REPORT;
1104 *pos++ = 13;
1105 os_memcpy(pos, other->own_addr, ETH_ALEN);
1106 pos += ETH_ALEN;
1107 info = 0; /* TODO: BSSID Information */
1108 WPA_PUT_LE32(pos, info);
1109 pos += 4;
1110 if (other->iconf->hw_mode == HOSTAPD_MODE_IEEE80211AD)
1111 phytype = 8; /* dmg */
1112 else if (other->iconf->ieee80211ac)
1113 phytype = 9; /* vht */
1114 else if (other->iconf->ieee80211n)
1115 phytype = 7; /* ht */
1116 else if (other->iconf->hw_mode ==
1117 HOSTAPD_MODE_IEEE80211A)
1118 phytype = 4; /* ofdm */
1119 else if (other->iconf->hw_mode ==
1120 HOSTAPD_MODE_IEEE80211G)
1121 phytype = 6; /* erp */
1122 else
1123 phytype = 5; /* hrdsss */
1124 if (ieee80211_freq_to_channel_ext(
1125 hostapd_hw_get_freq(other,
1126 other->iconf->channel),
1127 other->iconf->secondary_channel,
1128 other->iconf->ieee80211ac,
1129 &op_class, &channel) == NUM_HOSTAPD_MODES) {
1130 op_class = 0;
1131 channel = other->iconf->channel;
1132 }
1133 *pos++ = op_class;
1134 *pos++ = channel;
1135 *pos++ = phytype;
1136 resp_ies_len = pos - &resp_ies[0];
1137 goto fail;
1138 }
1139 }
1140
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07001141 res = hostapd_allowed_address(hapd, mgmt->sa, (u8 *) mgmt, len,
1142 &session_timeout,
Dmitry Shmidt1f69aa52012-01-24 16:10:04 -08001143 &acct_interim_interval, &vlan_id,
Dmitry Shmidtd5e49232012-12-03 15:08:10 -08001144 &psk, &identity, &radius_cui);
Dmitry Shmidt1f69aa52012-01-24 16:10:04 -08001145
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07001146 if (res == HOSTAPD_ACL_REJECT) {
Dmitry Shmidtcce06662013-11-04 18:44:24 -08001147 wpa_printf(MSG_INFO, "Station " MACSTR " not allowed to authenticate",
1148 MAC2STR(mgmt->sa));
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07001149 resp = WLAN_STATUS_UNSPECIFIED_FAILURE;
1150 goto fail;
1151 }
1152 if (res == HOSTAPD_ACL_PENDING) {
1153 wpa_printf(MSG_DEBUG, "Authentication frame from " MACSTR
1154 " waiting for an external authentication",
1155 MAC2STR(mgmt->sa));
1156 /* Authentication code will re-send the authentication frame
1157 * after it has received (and cached) information from the
1158 * external source. */
1159 return;
1160 }
1161
Dmitry Shmidt6c0da2b2015-01-05 13:08:17 -08001162 sta = ap_get_sta(hapd, mgmt->sa);
1163 if (sta) {
1164 if ((fc & WLAN_FC_RETRY) &&
1165 sta->last_seq_ctrl != WLAN_INVALID_MGMT_SEQ &&
1166 sta->last_seq_ctrl == seq_ctrl &&
1167 sta->last_subtype == WLAN_FC_STYPE_AUTH) {
1168 hostapd_logger(hapd, sta->addr,
1169 HOSTAPD_MODULE_IEEE80211,
1170 HOSTAPD_LEVEL_DEBUG,
1171 "Drop repeated authentication frame seq_ctrl=0x%x",
1172 seq_ctrl);
1173 return;
1174 }
Dmitry Shmidt57c2d392016-02-23 13:40:19 -08001175#ifdef CONFIG_MESH
1176 if ((hapd->conf->mesh & MESH_ENABLED) &&
1177 sta->plink_state == PLINK_BLOCKED) {
1178 wpa_printf(MSG_DEBUG, "Mesh peer " MACSTR
1179 " is blocked - drop Authentication frame",
1180 MAC2STR(mgmt->sa));
1181 return;
1182 }
1183#endif /* CONFIG_MESH */
Dmitry Shmidt6c0da2b2015-01-05 13:08:17 -08001184 } else {
1185#ifdef CONFIG_MESH
1186 if (hapd->conf->mesh & MESH_ENABLED) {
1187 /* if the mesh peer is not available, we don't do auth.
1188 */
1189 wpa_printf(MSG_DEBUG, "Mesh peer " MACSTR
Dmitry Shmidt57c2d392016-02-23 13:40:19 -08001190 " not yet known - drop Authentication frame",
Dmitry Shmidt6c0da2b2015-01-05 13:08:17 -08001191 MAC2STR(mgmt->sa));
1192 /*
1193 * Save a copy of the frame so that it can be processed
1194 * if a new peer entry is added shortly after this.
1195 */
1196 wpabuf_free(hapd->mesh_pending_auth);
1197 hapd->mesh_pending_auth = wpabuf_alloc_copy(mgmt, len);
1198 os_get_reltime(&hapd->mesh_pending_auth_time);
1199 return;
1200 }
1201#endif /* CONFIG_MESH */
1202
1203 sta = ap_sta_add(hapd, mgmt->sa);
1204 if (!sta) {
1205 resp = WLAN_STATUS_AP_UNABLE_TO_HANDLE_NEW_STA;
1206 goto fail;
1207 }
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07001208 }
Dmitry Shmidt6c0da2b2015-01-05 13:08:17 -08001209 sta->last_seq_ctrl = seq_ctrl;
1210 sta->last_subtype = WLAN_FC_STYPE_AUTH;
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07001211
Dmitry Shmidt57c2d392016-02-23 13:40:19 -08001212 if (vlan_id.notempty &&
1213 !hostapd_vlan_valid(hapd->conf->vlan, &vlan_id)) {
1214 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_RADIUS,
1215 HOSTAPD_LEVEL_INFO,
1216 "Invalid VLAN %d%s received from RADIUS server",
1217 vlan_id.untagged,
1218 vlan_id.tagged[0] ? "+" : "");
1219 resp = WLAN_STATUS_UNSPECIFIED_FAILURE;
1220 goto fail;
1221 }
1222 if (ap_sta_set_vlan(hapd, sta, &vlan_id) < 0) {
1223 resp = WLAN_STATUS_UNSPECIFIED_FAILURE;
1224 goto fail;
1225 }
1226 if (sta->vlan_id)
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07001227 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_RADIUS,
1228 HOSTAPD_LEVEL_INFO, "VLAN ID %d", sta->vlan_id);
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07001229
Dmitry Shmidtd5e49232012-12-03 15:08:10 -08001230 hostapd_free_psk_list(sta->psk);
1231 if (hapd->conf->wpa_psk_radius != PSK_RADIUS_IGNORED) {
1232 sta->psk = psk;
1233 psk = NULL;
Dmitry Shmidt1f69aa52012-01-24 16:10:04 -08001234 } else {
Dmitry Shmidt1f69aa52012-01-24 16:10:04 -08001235 sta->psk = NULL;
1236 }
1237
Dmitry Shmidt61d9df32012-08-29 16:22:06 -07001238 sta->identity = identity;
1239 identity = NULL;
1240 sta->radius_cui = radius_cui;
1241 radius_cui = NULL;
1242
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07001243 sta->flags &= ~WLAN_STA_PREAUTH;
1244 ieee802_1x_notify_pre_auth(sta->eapol_sm, 0);
1245
1246 if (hapd->conf->acct_interim_interval == 0 && acct_interim_interval)
1247 sta->acct_interim_interval = acct_interim_interval;
1248 if (res == HOSTAPD_ACL_ACCEPT_TIMEOUT)
1249 ap_sta_session_timeout(hapd, sta, session_timeout);
1250 else
1251 ap_sta_no_session_timeout(hapd, sta);
1252
Dmitry Shmidt57c2d392016-02-23 13:40:19 -08001253 /*
1254 * If the driver supports full AP client state, add a station to the
1255 * driver before sending authentication reply to make sure the driver
1256 * has resources, and not to go through the entire authentication and
1257 * association handshake, and fail it at the end.
1258 *
1259 * If this is not the first transaction, in a multi-step authentication
1260 * algorithm, the station already exists in the driver
1261 * (sta->added_unassoc = 1) so skip it.
1262 *
1263 * In mesh mode, the station was already added to the driver when the
1264 * NEW_PEER_CANDIDATE event is received.
1265 */
1266 if (FULL_AP_CLIENT_STATE_SUPP(hapd->iface->drv_flags) &&
1267 !(hapd->conf->mesh & MESH_ENABLED) &&
1268 !(sta->added_unassoc)) {
1269 /*
1270 * If a station that is already associated to the AP, is trying
1271 * to authenticate again, remove the STA entry, in order to make
1272 * sure the STA PS state gets cleared and configuration gets
1273 * updated. To handle this, station's added_unassoc flag is
1274 * cleared once the station has completed association.
1275 */
1276 hostapd_drv_sta_remove(hapd, sta->addr);
1277 sta->flags &= ~(WLAN_STA_ASSOC | WLAN_STA_AUTH |
1278 WLAN_STA_AUTHORIZED);
1279
1280 if (hostapd_sta_add(hapd, sta->addr, 0, 0, 0, 0, 0,
Dmitry Shmidt849734c2016-05-27 09:59:01 -07001281 NULL, NULL, sta->flags, 0, 0, 0, 0)) {
Dmitry Shmidt57c2d392016-02-23 13:40:19 -08001282 hostapd_logger(hapd, sta->addr,
1283 HOSTAPD_MODULE_IEEE80211,
1284 HOSTAPD_LEVEL_NOTICE,
1285 "Could not add STA to kernel driver");
1286 resp = WLAN_STATUS_AP_UNABLE_TO_HANDLE_NEW_STA;
1287 goto fail;
1288 }
1289
1290 sta->added_unassoc = 1;
1291 }
1292
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07001293 switch (auth_alg) {
1294 case WLAN_AUTH_OPEN:
1295 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
1296 HOSTAPD_LEVEL_DEBUG,
1297 "authentication OK (open system)");
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07001298 sta->flags |= WLAN_STA_AUTH;
1299 wpa_auth_sm_event(sta->wpa_sm, WPA_AUTH);
1300 sta->auth_alg = WLAN_AUTH_OPEN;
1301 mlme_authenticate_indication(hapd, sta);
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07001302 break;
Dmitry Shmidtd80a4012015-11-05 16:35:40 -08001303#ifndef CONFIG_NO_RC4
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07001304 case WLAN_AUTH_SHARED_KEY:
1305 resp = auth_shared_key(hapd, sta, auth_transaction, challenge,
1306 fc & WLAN_FC_ISWEP);
1307 sta->auth_alg = WLAN_AUTH_SHARED_KEY;
1308 mlme_authenticate_indication(hapd, sta);
1309 if (sta->challenge && auth_transaction == 1) {
1310 resp_ies[0] = WLAN_EID_CHALLENGE;
1311 resp_ies[1] = WLAN_AUTH_CHALLENGE_LEN;
1312 os_memcpy(resp_ies + 2, sta->challenge,
1313 WLAN_AUTH_CHALLENGE_LEN);
1314 resp_ies_len = 2 + WLAN_AUTH_CHALLENGE_LEN;
1315 }
1316 break;
Dmitry Shmidtd80a4012015-11-05 16:35:40 -08001317#endif /* CONFIG_NO_RC4 */
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07001318#ifdef CONFIG_IEEE80211R
1319 case WLAN_AUTH_FT:
1320 sta->auth_alg = WLAN_AUTH_FT;
1321 if (sta->wpa_sm == NULL)
1322 sta->wpa_sm = wpa_auth_sta_init(hapd->wpa_auth,
Dmitry Shmidt391c59f2013-09-03 12:16:28 -07001323 sta->addr, NULL);
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07001324 if (sta->wpa_sm == NULL) {
1325 wpa_printf(MSG_DEBUG, "FT: Failed to initialize WPA "
1326 "state machine");
1327 resp = WLAN_STATUS_UNSPECIFIED_FAILURE;
1328 goto fail;
1329 }
1330 wpa_ft_process_auth(sta->wpa_sm, mgmt->bssid,
1331 auth_transaction, mgmt->u.auth.variable,
1332 len - IEEE80211_HDRLEN -
1333 sizeof(mgmt->u.auth),
1334 handle_auth_ft_finish, hapd);
1335 /* handle_auth_ft_finish() callback will complete auth. */
1336 return;
1337#endif /* CONFIG_IEEE80211R */
Dmitry Shmidtd5e49232012-12-03 15:08:10 -08001338#ifdef CONFIG_SAE
1339 case WLAN_AUTH_SAE:
Dmitry Shmidt6c0da2b2015-01-05 13:08:17 -08001340#ifdef CONFIG_MESH
1341 if (status_code == WLAN_STATUS_SUCCESS &&
1342 hapd->conf->mesh & MESH_ENABLED) {
1343 if (sta->wpa_sm == NULL)
1344 sta->wpa_sm =
1345 wpa_auth_sta_init(hapd->wpa_auth,
1346 sta->addr, NULL);
1347 if (sta->wpa_sm == NULL) {
1348 wpa_printf(MSG_DEBUG,
1349 "SAE: Failed to initialize WPA state machine");
1350 resp = WLAN_STATUS_UNSPECIFIED_FAILURE;
1351 goto fail;
1352 }
1353 }
1354#endif /* CONFIG_MESH */
1355 handle_auth_sae(hapd, sta, mgmt, len, auth_transaction,
1356 status_code);
Dmitry Shmidtd5e49232012-12-03 15:08:10 -08001357 return;
1358#endif /* CONFIG_SAE */
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07001359 }
1360
1361 fail:
Dmitry Shmidt61d9df32012-08-29 16:22:06 -07001362 os_free(identity);
1363 os_free(radius_cui);
Dmitry Shmidtd5e49232012-12-03 15:08:10 -08001364 hostapd_free_psk_list(psk);
Dmitry Shmidt61d9df32012-08-29 16:22:06 -07001365
Dmitry Shmidt57c2d392016-02-23 13:40:19 -08001366 reply_res = send_auth_reply(hapd, mgmt->sa, mgmt->bssid, auth_alg,
1367 auth_transaction + 1, resp, resp_ies,
1368 resp_ies_len);
1369
1370 if (sta && sta->added_unassoc && (resp != WLAN_STATUS_SUCCESS ||
1371 reply_res != WLAN_STATUS_SUCCESS)) {
1372 hostapd_drv_sta_remove(hapd, sta->addr);
1373 sta->added_unassoc = 0;
1374 }
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07001375}
1376
1377
Dmitry Shmidtd80a4012015-11-05 16:35:40 -08001378int hostapd_get_aid(struct hostapd_data *hapd, struct sta_info *sta)
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07001379{
1380 int i, j = 32, aid;
1381
1382 /* get a unique AID */
1383 if (sta->aid > 0) {
1384 wpa_printf(MSG_DEBUG, " old AID %d", sta->aid);
1385 return 0;
1386 }
1387
1388 for (i = 0; i < AID_WORDS; i++) {
1389 if (hapd->sta_aid[i] == (u32) -1)
1390 continue;
1391 for (j = 0; j < 32; j++) {
1392 if (!(hapd->sta_aid[i] & BIT(j)))
1393 break;
1394 }
1395 if (j < 32)
1396 break;
1397 }
1398 if (j == 32)
1399 return -1;
1400 aid = i * 32 + j + 1;
1401 if (aid > 2007)
1402 return -1;
1403
1404 sta->aid = aid;
1405 hapd->sta_aid[i] |= BIT(j);
1406 wpa_printf(MSG_DEBUG, " new AID %d", sta->aid);
1407 return 0;
1408}
1409
1410
1411static u16 check_ssid(struct hostapd_data *hapd, struct sta_info *sta,
1412 const u8 *ssid_ie, size_t ssid_ie_len)
1413{
1414 if (ssid_ie == NULL)
1415 return WLAN_STATUS_UNSPECIFIED_FAILURE;
1416
1417 if (ssid_ie_len != hapd->conf->ssid.ssid_len ||
1418 os_memcmp(ssid_ie, hapd->conf->ssid.ssid, ssid_ie_len) != 0) {
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07001419 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
1420 HOSTAPD_LEVEL_INFO,
1421 "Station tried to associate with unknown SSID "
Dmitry Shmidt3c479372014-02-04 10:50:36 -08001422 "'%s'", wpa_ssid_txt(ssid_ie, ssid_ie_len));
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07001423 return WLAN_STATUS_UNSPECIFIED_FAILURE;
1424 }
1425
1426 return WLAN_STATUS_SUCCESS;
1427}
1428
1429
1430static u16 check_wmm(struct hostapd_data *hapd, struct sta_info *sta,
1431 const u8 *wmm_ie, size_t wmm_ie_len)
1432{
1433 sta->flags &= ~WLAN_STA_WMM;
Dmitry Shmidt1f69aa52012-01-24 16:10:04 -08001434 sta->qosinfo = 0;
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07001435 if (wmm_ie && hapd->conf->wmm_enabled) {
Dmitry Shmidt1f69aa52012-01-24 16:10:04 -08001436 struct wmm_information_element *wmm;
1437
1438 if (!hostapd_eid_wmm_valid(hapd, wmm_ie, wmm_ie_len)) {
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07001439 hostapd_logger(hapd, sta->addr,
1440 HOSTAPD_MODULE_WPA,
1441 HOSTAPD_LEVEL_DEBUG,
1442 "invalid WMM element in association "
1443 "request");
Dmitry Shmidt1f69aa52012-01-24 16:10:04 -08001444 return WLAN_STATUS_UNSPECIFIED_FAILURE;
1445 }
1446
1447 sta->flags |= WLAN_STA_WMM;
1448 wmm = (struct wmm_information_element *) wmm_ie;
1449 sta->qosinfo = wmm->qos_info;
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07001450 }
1451 return WLAN_STATUS_SUCCESS;
1452}
1453
1454
1455static u16 copy_supp_rates(struct hostapd_data *hapd, struct sta_info *sta,
1456 struct ieee802_11_elems *elems)
1457{
1458 if (!elems->supp_rates) {
1459 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
1460 HOSTAPD_LEVEL_DEBUG,
1461 "No supported rates element in AssocReq");
1462 return WLAN_STATUS_UNSPECIFIED_FAILURE;
1463 }
1464
Dmitry Shmidt61d9df32012-08-29 16:22:06 -07001465 if (elems->supp_rates_len + elems->ext_supp_rates_len >
1466 sizeof(sta->supported_rates)) {
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07001467 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
1468 HOSTAPD_LEVEL_DEBUG,
Dmitry Shmidt61d9df32012-08-29 16:22:06 -07001469 "Invalid supported rates element length %d+%d",
1470 elems->supp_rates_len,
1471 elems->ext_supp_rates_len);
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07001472 return WLAN_STATUS_UNSPECIFIED_FAILURE;
1473 }
1474
Dmitry Shmidt61d9df32012-08-29 16:22:06 -07001475 sta->supported_rates_len = merge_byte_arrays(
1476 sta->supported_rates, sizeof(sta->supported_rates),
1477 elems->supp_rates, elems->supp_rates_len,
1478 elems->ext_supp_rates, elems->ext_supp_rates_len);
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07001479
1480 return WLAN_STATUS_SUCCESS;
1481}
1482
1483
Dmitry Shmidt051af732013-10-22 13:52:46 -07001484static u16 check_ext_capab(struct hostapd_data *hapd, struct sta_info *sta,
1485 const u8 *ext_capab_ie, size_t ext_capab_ie_len)
1486{
1487#ifdef CONFIG_INTERWORKING
1488 /* check for QoS Map support */
1489 if (ext_capab_ie_len >= 5) {
1490 if (ext_capab_ie[4] & 0x01)
1491 sta->qos_map_enabled = 1;
1492 }
1493#endif /* CONFIG_INTERWORKING */
1494
Dmitry Shmidtd80a4012015-11-05 16:35:40 -08001495 if (ext_capab_ie_len > 0)
1496 sta->ecsa_supported = !!(ext_capab_ie[0] & BIT(2));
1497
Dmitry Shmidt051af732013-10-22 13:52:46 -07001498 return WLAN_STATUS_SUCCESS;
1499}
1500
1501
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07001502static u16 check_assoc_ies(struct hostapd_data *hapd, struct sta_info *sta,
1503 const u8 *ies, size_t ies_len, int reassoc)
1504{
1505 struct ieee802_11_elems elems;
1506 u16 resp;
1507 const u8 *wpa_ie;
1508 size_t wpa_ie_len;
Dmitry Shmidt391c59f2013-09-03 12:16:28 -07001509 const u8 *p2p_dev_addr = NULL;
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07001510
1511 if (ieee802_11_parse_elems(ies, ies_len, &elems, 1) == ParseFailed) {
1512 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
1513 HOSTAPD_LEVEL_INFO, "Station sent an invalid "
1514 "association request");
1515 return WLAN_STATUS_UNSPECIFIED_FAILURE;
1516 }
1517
1518 resp = check_ssid(hapd, sta, elems.ssid, elems.ssid_len);
1519 if (resp != WLAN_STATUS_SUCCESS)
1520 return resp;
1521 resp = check_wmm(hapd, sta, elems.wmm, elems.wmm_len);
1522 if (resp != WLAN_STATUS_SUCCESS)
1523 return resp;
Dmitry Shmidt051af732013-10-22 13:52:46 -07001524 resp = check_ext_capab(hapd, sta, elems.ext_capab, elems.ext_capab_len);
1525 if (resp != WLAN_STATUS_SUCCESS)
1526 return resp;
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07001527 resp = copy_supp_rates(hapd, sta, &elems);
1528 if (resp != WLAN_STATUS_SUCCESS)
1529 return resp;
1530#ifdef CONFIG_IEEE80211N
Dmitry Shmidt9d9e6022015-04-23 10:34:55 -07001531 resp = copy_sta_ht_capab(hapd, sta, elems.ht_capabilities);
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07001532 if (resp != WLAN_STATUS_SUCCESS)
1533 return resp;
1534 if (hapd->iconf->ieee80211n && hapd->iconf->require_ht &&
1535 !(sta->flags & WLAN_STA_HT)) {
1536 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
1537 HOSTAPD_LEVEL_INFO, "Station does not support "
1538 "mandatory HT PHY - reject association");
1539 return WLAN_STATUS_ASSOC_DENIED_NO_HT;
1540 }
1541#endif /* CONFIG_IEEE80211N */
1542
Dmitry Shmidt61d9df32012-08-29 16:22:06 -07001543#ifdef CONFIG_IEEE80211AC
Dmitry Shmidtd80a4012015-11-05 16:35:40 -08001544 if (hapd->iconf->ieee80211ac) {
1545 resp = copy_sta_vht_capab(hapd, sta, elems.vht_capabilities);
1546 if (resp != WLAN_STATUS_SUCCESS)
1547 return resp;
Dmitry Shmidtbd14a572014-02-18 10:33:49 -08001548
Dmitry Shmidtd80a4012015-11-05 16:35:40 -08001549 resp = set_sta_vht_opmode(hapd, sta, elems.vht_opmode_notif);
1550 if (resp != WLAN_STATUS_SUCCESS)
1551 return resp;
1552 }
Dmitry Shmidtbd14a572014-02-18 10:33:49 -08001553
Dmitry Shmidt61d9df32012-08-29 16:22:06 -07001554 if (hapd->iconf->ieee80211ac && hapd->iconf->require_vht &&
1555 !(sta->flags & WLAN_STA_VHT)) {
1556 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
1557 HOSTAPD_LEVEL_INFO, "Station does not support "
1558 "mandatory VHT PHY - reject association");
Dmitry Shmidtfb79edc2014-01-10 10:45:54 -08001559 return WLAN_STATUS_ASSOC_DENIED_NO_VHT;
Dmitry Shmidt61d9df32012-08-29 16:22:06 -07001560 }
Dmitry Shmidt2f74e362015-01-21 13:19:05 -08001561
1562 if (hapd->conf->vendor_vht && !elems.vht_capabilities) {
1563 resp = copy_sta_vendor_vht(hapd, sta, elems.vendor_vht,
1564 elems.vendor_vht_len);
1565 if (resp != WLAN_STATUS_SUCCESS)
1566 return resp;
1567 }
Dmitry Shmidt61d9df32012-08-29 16:22:06 -07001568#endif /* CONFIG_IEEE80211AC */
1569
Dmitry Shmidt391c59f2013-09-03 12:16:28 -07001570#ifdef CONFIG_P2P
1571 if (elems.p2p) {
1572 wpabuf_free(sta->p2p_ie);
1573 sta->p2p_ie = ieee802_11_vendor_ie_concat(ies, ies_len,
1574 P2P_IE_VENDOR_TYPE);
1575 if (sta->p2p_ie)
1576 p2p_dev_addr = p2p_get_go_dev_addr(sta->p2p_ie);
1577 } else {
1578 wpabuf_free(sta->p2p_ie);
1579 sta->p2p_ie = NULL;
1580 }
1581#endif /* CONFIG_P2P */
1582
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07001583 if ((hapd->conf->wpa & WPA_PROTO_RSN) && elems.rsn_ie) {
1584 wpa_ie = elems.rsn_ie;
1585 wpa_ie_len = elems.rsn_ie_len;
1586 } else if ((hapd->conf->wpa & WPA_PROTO_WPA) &&
1587 elems.wpa_ie) {
1588 wpa_ie = elems.wpa_ie;
1589 wpa_ie_len = elems.wpa_ie_len;
1590 } else {
1591 wpa_ie = NULL;
1592 wpa_ie_len = 0;
1593 }
1594
1595#ifdef CONFIG_WPS
Dmitry Shmidt1f69aa52012-01-24 16:10:04 -08001596 sta->flags &= ~(WLAN_STA_WPS | WLAN_STA_MAYBE_WPS | WLAN_STA_WPS2);
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07001597 if (hapd->conf->wps_state && elems.wps_ie) {
1598 wpa_printf(MSG_DEBUG, "STA included WPS IE in (Re)Association "
1599 "Request - assume WPS is used");
1600 sta->flags |= WLAN_STA_WPS;
1601 wpabuf_free(sta->wps_ie);
1602 sta->wps_ie = ieee802_11_vendor_ie_concat(ies, ies_len,
1603 WPS_IE_VENDOR_TYPE);
Dmitry Shmidt1f69aa52012-01-24 16:10:04 -08001604 if (sta->wps_ie && wps_is_20(sta->wps_ie)) {
1605 wpa_printf(MSG_DEBUG, "WPS: STA supports WPS 2.0");
1606 sta->flags |= WLAN_STA_WPS2;
1607 }
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07001608 wpa_ie = NULL;
1609 wpa_ie_len = 0;
1610 if (sta->wps_ie && wps_validate_assoc_req(sta->wps_ie) < 0) {
1611 wpa_printf(MSG_DEBUG, "WPS: Invalid WPS IE in "
1612 "(Re)Association Request - reject");
1613 return WLAN_STATUS_INVALID_IE;
1614 }
1615 } else if (hapd->conf->wps_state && wpa_ie == NULL) {
1616 wpa_printf(MSG_DEBUG, "STA did not include WPA/RSN IE in "
1617 "(Re)Association Request - possible WPS use");
1618 sta->flags |= WLAN_STA_MAYBE_WPS;
1619 } else
1620#endif /* CONFIG_WPS */
1621 if (hapd->conf->wpa && wpa_ie == NULL) {
1622 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
1623 HOSTAPD_LEVEL_INFO,
1624 "No WPA/RSN IE in association request");
1625 return WLAN_STATUS_INVALID_IE;
1626 }
1627
1628 if (hapd->conf->wpa && wpa_ie) {
1629 int res;
1630 wpa_ie -= 2;
1631 wpa_ie_len += 2;
1632 if (sta->wpa_sm == NULL)
1633 sta->wpa_sm = wpa_auth_sta_init(hapd->wpa_auth,
Dmitry Shmidt391c59f2013-09-03 12:16:28 -07001634 sta->addr,
1635 p2p_dev_addr);
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07001636 if (sta->wpa_sm == NULL) {
1637 wpa_printf(MSG_WARNING, "Failed to initialize WPA "
1638 "state machine");
1639 return WLAN_STATUS_UNSPECIFIED_FAILURE;
1640 }
1641 res = wpa_validate_wpa_ie(hapd->wpa_auth, sta->wpa_sm,
1642 wpa_ie, wpa_ie_len,
1643 elems.mdie, elems.mdie_len);
1644 if (res == WPA_INVALID_GROUP)
1645 resp = WLAN_STATUS_GROUP_CIPHER_NOT_VALID;
1646 else if (res == WPA_INVALID_PAIRWISE)
1647 resp = WLAN_STATUS_PAIRWISE_CIPHER_NOT_VALID;
1648 else if (res == WPA_INVALID_AKMP)
1649 resp = WLAN_STATUS_AKMP_NOT_VALID;
1650 else if (res == WPA_ALLOC_FAIL)
1651 resp = WLAN_STATUS_UNSPECIFIED_FAILURE;
1652#ifdef CONFIG_IEEE80211W
1653 else if (res == WPA_MGMT_FRAME_PROTECTION_VIOLATION)
1654 resp = WLAN_STATUS_ROBUST_MGMT_FRAME_POLICY_VIOLATION;
1655 else if (res == WPA_INVALID_MGMT_GROUP_CIPHER)
1656 resp = WLAN_STATUS_ROBUST_MGMT_FRAME_POLICY_VIOLATION;
1657#endif /* CONFIG_IEEE80211W */
1658 else if (res == WPA_INVALID_MDIE)
1659 resp = WLAN_STATUS_INVALID_MDIE;
1660 else if (res != WPA_IE_OK)
1661 resp = WLAN_STATUS_INVALID_IE;
1662 if (resp != WLAN_STATUS_SUCCESS)
1663 return resp;
1664#ifdef CONFIG_IEEE80211W
1665 if ((sta->flags & WLAN_STA_MFP) && !sta->sa_query_timed_out &&
1666 sta->sa_query_count > 0)
1667 ap_check_sa_query_timeout(hapd, sta);
1668 if ((sta->flags & WLAN_STA_MFP) && !sta->sa_query_timed_out &&
1669 (!reassoc || sta->auth_alg != WLAN_AUTH_FT)) {
1670 /*
1671 * STA has already been associated with MFP and SA
1672 * Query timeout has not been reached. Reject the
1673 * association attempt temporarily and start SA Query,
1674 * if one is not pending.
1675 */
1676
1677 if (sta->sa_query_count == 0)
1678 ap_sta_start_sa_query(hapd, sta);
1679
1680 return WLAN_STATUS_ASSOC_REJECTED_TEMPORARILY;
1681 }
1682
1683 if (wpa_auth_uses_mfp(sta->wpa_sm))
1684 sta->flags |= WLAN_STA_MFP;
1685 else
1686 sta->flags &= ~WLAN_STA_MFP;
1687#endif /* CONFIG_IEEE80211W */
1688
1689#ifdef CONFIG_IEEE80211R
1690 if (sta->auth_alg == WLAN_AUTH_FT) {
1691 if (!reassoc) {
1692 wpa_printf(MSG_DEBUG, "FT: " MACSTR " tried "
1693 "to use association (not "
1694 "re-association) with FT auth_alg",
1695 MAC2STR(sta->addr));
1696 return WLAN_STATUS_UNSPECIFIED_FAILURE;
1697 }
1698
1699 resp = wpa_ft_validate_reassoc(sta->wpa_sm, ies,
1700 ies_len);
1701 if (resp != WLAN_STATUS_SUCCESS)
1702 return resp;
1703 }
1704#endif /* CONFIG_IEEE80211R */
1705
Dmitry Shmidtd5e49232012-12-03 15:08:10 -08001706#ifdef CONFIG_SAE
1707 if (wpa_auth_uses_sae(sta->wpa_sm) &&
Dmitry Shmidt6c0da2b2015-01-05 13:08:17 -08001708 sta->auth_alg == WLAN_AUTH_OPEN) {
1709 struct rsn_pmksa_cache_entry *sa;
1710 sa = wpa_auth_sta_get_pmksa(sta->wpa_sm);
1711 if (!sa || sa->akmp != WPA_KEY_MGMT_SAE) {
1712 wpa_printf(MSG_DEBUG,
1713 "SAE: No PMKSA cache entry found for "
1714 MACSTR, MAC2STR(sta->addr));
1715 return WLAN_STATUS_INVALID_PMKID;
1716 }
1717 wpa_printf(MSG_DEBUG, "SAE: " MACSTR
1718 " using PMKSA caching", MAC2STR(sta->addr));
1719 } else if (wpa_auth_uses_sae(sta->wpa_sm) &&
1720 sta->auth_alg != WLAN_AUTH_SAE &&
1721 !(sta->auth_alg == WLAN_AUTH_FT &&
1722 wpa_auth_uses_ft_sae(sta->wpa_sm))) {
Dmitry Shmidtd5e49232012-12-03 15:08:10 -08001723 wpa_printf(MSG_DEBUG, "SAE: " MACSTR " tried to use "
1724 "SAE AKM after non-SAE auth_alg %u",
1725 MAC2STR(sta->addr), sta->auth_alg);
1726 return WLAN_STATUS_NOT_SUPPORTED_AUTH_ALG;
1727 }
1728#endif /* CONFIG_SAE */
1729
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07001730#ifdef CONFIG_IEEE80211N
Dmitry Shmidt61d9df32012-08-29 16:22:06 -07001731 if ((sta->flags & (WLAN_STA_HT | WLAN_STA_VHT)) &&
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07001732 wpa_auth_get_pairwise(sta->wpa_sm) == WPA_CIPHER_TKIP) {
1733 hostapd_logger(hapd, sta->addr,
1734 HOSTAPD_MODULE_IEEE80211,
1735 HOSTAPD_LEVEL_INFO,
1736 "Station tried to use TKIP with HT "
1737 "association");
1738 return WLAN_STATUS_CIPHER_REJECTED_PER_POLICY;
1739 }
1740#endif /* CONFIG_IEEE80211N */
Dmitry Shmidtf21452a2014-02-26 10:55:25 -08001741#ifdef CONFIG_HS20
1742 } else if (hapd->conf->osen) {
1743 if (elems.osen == NULL) {
1744 hostapd_logger(
1745 hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
1746 HOSTAPD_LEVEL_INFO,
1747 "No HS 2.0 OSEN element in association request");
1748 return WLAN_STATUS_INVALID_IE;
1749 }
1750
1751 wpa_printf(MSG_DEBUG, "HS 2.0: OSEN association");
1752 if (sta->wpa_sm == NULL)
1753 sta->wpa_sm = wpa_auth_sta_init(hapd->wpa_auth,
1754 sta->addr, NULL);
1755 if (sta->wpa_sm == NULL) {
1756 wpa_printf(MSG_WARNING, "Failed to initialize WPA "
1757 "state machine");
1758 return WLAN_STATUS_UNSPECIFIED_FAILURE;
1759 }
1760 if (wpa_validate_osen(hapd->wpa_auth, sta->wpa_sm,
1761 elems.osen - 2, elems.osen_len + 2) < 0)
1762 return WLAN_STATUS_INVALID_IE;
1763#endif /* CONFIG_HS20 */
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07001764 } else
1765 wpa_auth_sta_no_wpa(sta->wpa_sm);
1766
1767#ifdef CONFIG_P2P
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07001768 p2p_group_notif_assoc(hapd->p2p_group, sta->addr, ies, ies_len);
1769#endif /* CONFIG_P2P */
1770
Dmitry Shmidtd5e49232012-12-03 15:08:10 -08001771#ifdef CONFIG_HS20
1772 wpabuf_free(sta->hs20_ie);
1773 if (elems.hs20 && elems.hs20_len > 4) {
1774 sta->hs20_ie = wpabuf_alloc_copy(elems.hs20 + 4,
1775 elems.hs20_len - 4);
1776 } else
1777 sta->hs20_ie = NULL;
1778#endif /* CONFIG_HS20 */
1779
Dmitry Shmidtd80a4012015-11-05 16:35:40 -08001780#ifdef CONFIG_FST
1781 wpabuf_free(sta->mb_ies);
1782 if (hapd->iface->fst)
1783 sta->mb_ies = mb_ies_by_info(&elems.mb_ies);
1784 else
1785 sta->mb_ies = NULL;
1786#endif /* CONFIG_FST */
1787
Dmitry Shmidt57c2d392016-02-23 13:40:19 -08001788#ifdef CONFIG_MBO
1789 mbo_ap_check_sta_assoc(hapd, sta, &elems);
1790
1791 if (hapd->conf->mbo_enabled && (hapd->conf->wpa & 2) &&
1792 elems.mbo && sta->cell_capa && !(sta->flags & WLAN_STA_MFP) &&
1793 hapd->conf->ieee80211w != NO_MGMT_FRAME_PROTECTION) {
1794 wpa_printf(MSG_INFO,
1795 "MBO: Reject WPA2 association without PMF");
1796 return WLAN_STATUS_UNSPECIFIED_FAILURE;
1797 }
1798#endif /* CONFIG_MBO */
1799
Dmitry Shmidt9c175262016-03-03 10:20:07 -08001800 ap_copy_sta_supp_op_classes(sta, elems.supp_op_classes,
1801 elems.supp_op_classes_len);
1802
Dmitry Shmidt849734c2016-05-27 09:59:01 -07001803 if ((sta->capability & WLAN_CAPABILITY_RADIO_MEASUREMENT) &&
1804 elems.rrm_enabled &&
1805 elems.rrm_enabled_len >= sizeof(sta->rrm_enabled_capa))
1806 os_memcpy(sta->rrm_enabled_capa, elems.rrm_enabled,
1807 sizeof(sta->rrm_enabled_capa));
1808
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07001809 return WLAN_STATUS_SUCCESS;
1810}
1811
1812
1813static void send_deauth(struct hostapd_data *hapd, const u8 *addr,
1814 u16 reason_code)
1815{
1816 int send_len;
1817 struct ieee80211_mgmt reply;
1818
1819 os_memset(&reply, 0, sizeof(reply));
1820 reply.frame_control =
1821 IEEE80211_FC(WLAN_FC_TYPE_MGMT, WLAN_FC_STYPE_DEAUTH);
1822 os_memcpy(reply.da, addr, ETH_ALEN);
1823 os_memcpy(reply.sa, hapd->own_addr, ETH_ALEN);
1824 os_memcpy(reply.bssid, hapd->own_addr, ETH_ALEN);
1825
1826 send_len = IEEE80211_HDRLEN + sizeof(reply.u.deauth);
1827 reply.u.deauth.reason_code = host_to_le16(reason_code);
1828
Dmitry Shmidt1f69aa52012-01-24 16:10:04 -08001829 if (hostapd_drv_send_mlme(hapd, &reply, send_len, 0) < 0)
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07001830 wpa_printf(MSG_INFO, "Failed to send deauth: %s",
1831 strerror(errno));
1832}
1833
1834
Dmitry Shmidt57c2d392016-02-23 13:40:19 -08001835static int add_associated_sta(struct hostapd_data *hapd,
1836 struct sta_info *sta)
1837{
1838 struct ieee80211_ht_capabilities ht_cap;
1839 struct ieee80211_vht_capabilities vht_cap;
1840
1841 /*
1842 * Remove the STA entry to ensure the STA PS state gets cleared and
1843 * configuration gets updated. This is relevant for cases, such as
1844 * FT-over-the-DS, where a station re-associates back to the same AP but
1845 * skips the authentication flow, or if working with a driver that
1846 * does not support full AP client state.
1847 */
1848 if (!sta->added_unassoc)
1849 hostapd_drv_sta_remove(hapd, sta->addr);
1850
1851#ifdef CONFIG_IEEE80211N
1852 if (sta->flags & WLAN_STA_HT)
1853 hostapd_get_ht_capab(hapd, sta->ht_capabilities, &ht_cap);
1854#endif /* CONFIG_IEEE80211N */
1855#ifdef CONFIG_IEEE80211AC
1856 if (sta->flags & WLAN_STA_VHT)
1857 hostapd_get_vht_capab(hapd, sta->vht_capabilities, &vht_cap);
1858#endif /* CONFIG_IEEE80211AC */
1859
1860 /*
1861 * Add the station with forced WLAN_STA_ASSOC flag. The sta->flags
1862 * will be set when the ACK frame for the (Re)Association Response frame
1863 * is processed (TX status driver event).
1864 */
1865 if (hostapd_sta_add(hapd, sta->addr, sta->aid, sta->capability,
1866 sta->supported_rates, sta->supported_rates_len,
1867 sta->listen_interval,
1868 sta->flags & WLAN_STA_HT ? &ht_cap : NULL,
1869 sta->flags & WLAN_STA_VHT ? &vht_cap : NULL,
1870 sta->flags | WLAN_STA_ASSOC, sta->qosinfo,
Dmitry Shmidt849734c2016-05-27 09:59:01 -07001871 sta->vht_opmode, sta->p2p_ie ? 1 : 0,
1872 sta->added_unassoc)) {
Dmitry Shmidt57c2d392016-02-23 13:40:19 -08001873 hostapd_logger(hapd, sta->addr,
1874 HOSTAPD_MODULE_IEEE80211, HOSTAPD_LEVEL_NOTICE,
1875 "Could not %s STA to kernel driver",
1876 sta->added_unassoc ? "set" : "add");
1877
1878 if (sta->added_unassoc) {
1879 hostapd_drv_sta_remove(hapd, sta->addr);
1880 sta->added_unassoc = 0;
1881 }
1882
1883 return -1;
1884 }
1885
1886 sta->added_unassoc = 0;
1887
1888 return 0;
1889}
1890
1891
1892static u16 send_assoc_resp(struct hostapd_data *hapd, struct sta_info *sta,
1893 u16 status_code, int reassoc, const u8 *ies,
1894 size_t ies_len)
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07001895{
1896 int send_len;
1897 u8 buf[sizeof(struct ieee80211_mgmt) + 1024];
1898 struct ieee80211_mgmt *reply;
1899 u8 *p;
1900
1901 os_memset(buf, 0, sizeof(buf));
1902 reply = (struct ieee80211_mgmt *) buf;
1903 reply->frame_control =
1904 IEEE80211_FC(WLAN_FC_TYPE_MGMT,
1905 (reassoc ? WLAN_FC_STYPE_REASSOC_RESP :
1906 WLAN_FC_STYPE_ASSOC_RESP));
1907 os_memcpy(reply->da, sta->addr, ETH_ALEN);
1908 os_memcpy(reply->sa, hapd->own_addr, ETH_ALEN);
1909 os_memcpy(reply->bssid, hapd->own_addr, ETH_ALEN);
1910
1911 send_len = IEEE80211_HDRLEN;
1912 send_len += sizeof(reply->u.assoc_resp);
1913 reply->u.assoc_resp.capab_info =
Dmitry Shmidt9d9e6022015-04-23 10:34:55 -07001914 host_to_le16(hostapd_own_capab_info(hapd));
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07001915 reply->u.assoc_resp.status_code = host_to_le16(status_code);
Dmitry Shmidt96be6222014-02-13 10:16:51 -08001916 reply->u.assoc_resp.aid = host_to_le16(sta->aid | BIT(14) | BIT(15));
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07001917 /* Supported rates */
1918 p = hostapd_eid_supp_rates(hapd, reply->u.assoc_resp.variable);
1919 /* Extended supported rates */
1920 p = hostapd_eid_ext_supp_rates(hapd, p);
1921
1922#ifdef CONFIG_IEEE80211R
1923 if (status_code == WLAN_STATUS_SUCCESS) {
1924 /* IEEE 802.11r: Mobility Domain Information, Fast BSS
1925 * Transition Information, RSN, [RIC Response] */
1926 p = wpa_sm_write_assoc_resp_ies(sta->wpa_sm, p,
1927 buf + sizeof(buf) - p,
1928 sta->auth_alg, ies, ies_len);
1929 }
1930#endif /* CONFIG_IEEE80211R */
1931
1932#ifdef CONFIG_IEEE80211W
1933 if (status_code == WLAN_STATUS_ASSOC_REJECTED_TEMPORARILY)
1934 p = hostapd_eid_assoc_comeback_time(hapd, sta, p);
1935#endif /* CONFIG_IEEE80211W */
1936
1937#ifdef CONFIG_IEEE80211N
1938 p = hostapd_eid_ht_capabilities(hapd, p);
1939 p = hostapd_eid_ht_operation(hapd, p);
1940#endif /* CONFIG_IEEE80211N */
1941
Dmitry Shmidt61d9df32012-08-29 16:22:06 -07001942#ifdef CONFIG_IEEE80211AC
Dmitry Shmidt2f74e362015-01-21 13:19:05 -08001943 if (hapd->iconf->ieee80211ac && !hapd->conf->disable_11ac) {
1944 p = hostapd_eid_vht_capabilities(hapd, p);
1945 p = hostapd_eid_vht_operation(hapd, p);
1946 }
Dmitry Shmidt61d9df32012-08-29 16:22:06 -07001947#endif /* CONFIG_IEEE80211AC */
1948
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07001949 p = hostapd_eid_ext_capab(hapd, p);
Dmitry Shmidt04949592012-07-19 12:16:46 -07001950 p = hostapd_eid_bss_max_idle_period(hapd, p);
Dmitry Shmidt051af732013-10-22 13:52:46 -07001951 if (sta->qos_map_enabled)
1952 p = hostapd_eid_qos_map_set(hapd, p);
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07001953
Dmitry Shmidtd80a4012015-11-05 16:35:40 -08001954#ifdef CONFIG_FST
1955 if (hapd->iface->fst_ies) {
1956 os_memcpy(p, wpabuf_head(hapd->iface->fst_ies),
1957 wpabuf_len(hapd->iface->fst_ies));
1958 p += wpabuf_len(hapd->iface->fst_ies);
1959 }
1960#endif /* CONFIG_FST */
1961
Dmitry Shmidt2f74e362015-01-21 13:19:05 -08001962#ifdef CONFIG_IEEE80211AC
1963 if (hapd->conf->vendor_vht && (sta->flags & WLAN_STA_VENDOR_VHT))
1964 p = hostapd_eid_vendor_vht(hapd, p);
1965#endif /* CONFIG_IEEE80211AC */
1966
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07001967 if (sta->flags & WLAN_STA_WMM)
1968 p = hostapd_eid_wmm(hapd, p);
1969
1970#ifdef CONFIG_WPS
Dmitry Shmidt1f69aa52012-01-24 16:10:04 -08001971 if ((sta->flags & WLAN_STA_WPS) ||
1972 ((sta->flags & WLAN_STA_MAYBE_WPS) && hapd->conf->wpa)) {
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07001973 struct wpabuf *wps = wps_build_assoc_resp_ie();
1974 if (wps) {
1975 os_memcpy(p, wpabuf_head(wps), wpabuf_len(wps));
1976 p += wpabuf_len(wps);
1977 wpabuf_free(wps);
1978 }
1979 }
1980#endif /* CONFIG_WPS */
1981
1982#ifdef CONFIG_P2P
Dmitry Shmidtde47be72016-01-07 12:52:55 -08001983 if (sta->p2p_ie && hapd->p2p_group) {
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07001984 struct wpabuf *p2p_resp_ie;
1985 enum p2p_status_code status;
1986 switch (status_code) {
1987 case WLAN_STATUS_SUCCESS:
1988 status = P2P_SC_SUCCESS;
1989 break;
1990 case WLAN_STATUS_AP_UNABLE_TO_HANDLE_NEW_STA:
1991 status = P2P_SC_FAIL_LIMIT_REACHED;
1992 break;
1993 default:
1994 status = P2P_SC_FAIL_INVALID_PARAMS;
1995 break;
1996 }
1997 p2p_resp_ie = p2p_group_assoc_resp_ie(hapd->p2p_group, status);
1998 if (p2p_resp_ie) {
1999 os_memcpy(p, wpabuf_head(p2p_resp_ie),
2000 wpabuf_len(p2p_resp_ie));
2001 p += wpabuf_len(p2p_resp_ie);
2002 wpabuf_free(p2p_resp_ie);
2003 }
2004 }
2005#endif /* CONFIG_P2P */
2006
2007#ifdef CONFIG_P2P_MANAGER
2008 if (hapd->conf->p2p & P2P_MANAGE)
2009 p = hostapd_eid_p2p_manage(hapd, p);
2010#endif /* CONFIG_P2P_MANAGER */
2011
Dmitry Shmidt57c2d392016-02-23 13:40:19 -08002012 p = hostapd_eid_mbo(hapd, p, buf + sizeof(buf) - p);
2013
Dmitry Shmidt849734c2016-05-27 09:59:01 -07002014 if (hapd->conf->assocresp_elements &&
2015 (size_t) (buf + sizeof(buf) - p) >=
2016 wpabuf_len(hapd->conf->assocresp_elements)) {
2017 os_memcpy(p, wpabuf_head(hapd->conf->assocresp_elements),
2018 wpabuf_len(hapd->conf->assocresp_elements));
2019 p += wpabuf_len(hapd->conf->assocresp_elements);
2020 }
2021
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07002022 send_len += p - reply->u.assoc_resp.variable;
2023
Dmitry Shmidt57c2d392016-02-23 13:40:19 -08002024 if (hostapd_drv_send_mlme(hapd, reply, send_len, 0) < 0) {
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07002025 wpa_printf(MSG_INFO, "Failed to send assoc resp: %s",
2026 strerror(errno));
Dmitry Shmidt57c2d392016-02-23 13:40:19 -08002027 return WLAN_STATUS_UNSPECIFIED_FAILURE;
2028 }
2029
2030 return WLAN_STATUS_SUCCESS;
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07002031}
2032
2033
2034static void handle_assoc(struct hostapd_data *hapd,
2035 const struct ieee80211_mgmt *mgmt, size_t len,
2036 int reassoc)
2037{
Dmitry Shmidt6c0da2b2015-01-05 13:08:17 -08002038 u16 capab_info, listen_interval, seq_ctrl, fc;
Dmitry Shmidt57c2d392016-02-23 13:40:19 -08002039 u16 resp = WLAN_STATUS_SUCCESS, reply_res;
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07002040 const u8 *pos;
2041 int left, i;
2042 struct sta_info *sta;
2043
2044 if (len < IEEE80211_HDRLEN + (reassoc ? sizeof(mgmt->u.reassoc_req) :
2045 sizeof(mgmt->u.assoc_req))) {
Dmitry Shmidtcce06662013-11-04 18:44:24 -08002046 wpa_printf(MSG_INFO, "handle_assoc(reassoc=%d) - too short payload (len=%lu)",
2047 reassoc, (unsigned long) len);
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07002048 return;
2049 }
2050
Dmitry Shmidt8da800a2013-04-24 12:57:01 -07002051#ifdef CONFIG_TESTING_OPTIONS
2052 if (reassoc) {
Dmitry Shmidt7832adb2014-04-29 10:53:02 -07002053 if (hapd->iconf->ignore_reassoc_probability > 0.0 &&
Dmitry Shmidt8da800a2013-04-24 12:57:01 -07002054 drand48() < hapd->iconf->ignore_reassoc_probability) {
2055 wpa_printf(MSG_INFO,
2056 "TESTING: ignoring reassoc request from "
2057 MACSTR, MAC2STR(mgmt->sa));
2058 return;
2059 }
2060 } else {
Dmitry Shmidt7832adb2014-04-29 10:53:02 -07002061 if (hapd->iconf->ignore_assoc_probability > 0.0 &&
Dmitry Shmidt8da800a2013-04-24 12:57:01 -07002062 drand48() < hapd->iconf->ignore_assoc_probability) {
2063 wpa_printf(MSG_INFO,
2064 "TESTING: ignoring assoc request from "
2065 MACSTR, MAC2STR(mgmt->sa));
2066 return;
2067 }
2068 }
2069#endif /* CONFIG_TESTING_OPTIONS */
2070
Dmitry Shmidt6c0da2b2015-01-05 13:08:17 -08002071 fc = le_to_host16(mgmt->frame_control);
2072 seq_ctrl = le_to_host16(mgmt->seq_ctrl);
2073
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07002074 if (reassoc) {
2075 capab_info = le_to_host16(mgmt->u.reassoc_req.capab_info);
2076 listen_interval = le_to_host16(
2077 mgmt->u.reassoc_req.listen_interval);
2078 wpa_printf(MSG_DEBUG, "reassociation request: STA=" MACSTR
2079 " capab_info=0x%02x listen_interval=%d current_ap="
Dmitry Shmidt6c0da2b2015-01-05 13:08:17 -08002080 MACSTR " seq_ctrl=0x%x%s",
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07002081 MAC2STR(mgmt->sa), capab_info, listen_interval,
Dmitry Shmidt6c0da2b2015-01-05 13:08:17 -08002082 MAC2STR(mgmt->u.reassoc_req.current_ap),
2083 seq_ctrl, (fc & WLAN_FC_RETRY) ? " retry" : "");
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07002084 left = len - (IEEE80211_HDRLEN + sizeof(mgmt->u.reassoc_req));
2085 pos = mgmt->u.reassoc_req.variable;
2086 } else {
2087 capab_info = le_to_host16(mgmt->u.assoc_req.capab_info);
2088 listen_interval = le_to_host16(
2089 mgmt->u.assoc_req.listen_interval);
2090 wpa_printf(MSG_DEBUG, "association request: STA=" MACSTR
Dmitry Shmidt6c0da2b2015-01-05 13:08:17 -08002091 " capab_info=0x%02x listen_interval=%d "
2092 "seq_ctrl=0x%x%s",
2093 MAC2STR(mgmt->sa), capab_info, listen_interval,
2094 seq_ctrl, (fc & WLAN_FC_RETRY) ? " retry" : "");
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07002095 left = len - (IEEE80211_HDRLEN + sizeof(mgmt->u.assoc_req));
2096 pos = mgmt->u.assoc_req.variable;
2097 }
2098
2099 sta = ap_get_sta(hapd, mgmt->sa);
2100#ifdef CONFIG_IEEE80211R
2101 if (sta && sta->auth_alg == WLAN_AUTH_FT &&
2102 (sta->flags & WLAN_STA_AUTH) == 0) {
2103 wpa_printf(MSG_DEBUG, "FT: Allow STA " MACSTR " to associate "
2104 "prior to authentication since it is using "
2105 "over-the-DS FT", MAC2STR(mgmt->sa));
Dmitry Shmidt57c2d392016-02-23 13:40:19 -08002106
2107 /*
2108 * Mark station as authenticated, to avoid adding station
2109 * entry in the driver as associated and not authenticated
2110 */
2111 sta->flags |= WLAN_STA_AUTH;
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07002112 } else
2113#endif /* CONFIG_IEEE80211R */
2114 if (sta == NULL || (sta->flags & WLAN_STA_AUTH) == 0) {
2115 hostapd_logger(hapd, mgmt->sa, HOSTAPD_MODULE_IEEE80211,
2116 HOSTAPD_LEVEL_INFO, "Station tried to "
2117 "associate before authentication "
2118 "(aid=%d flags=0x%x)",
2119 sta ? sta->aid : -1,
2120 sta ? sta->flags : 0);
2121 send_deauth(hapd, mgmt->sa,
2122 WLAN_REASON_CLASS2_FRAME_FROM_NONAUTH_STA);
2123 return;
2124 }
2125
Dmitry Shmidt6c0da2b2015-01-05 13:08:17 -08002126 if ((fc & WLAN_FC_RETRY) &&
2127 sta->last_seq_ctrl != WLAN_INVALID_MGMT_SEQ &&
2128 sta->last_seq_ctrl == seq_ctrl &&
2129 sta->last_subtype == reassoc ? WLAN_FC_STYPE_REASSOC_REQ :
2130 WLAN_FC_STYPE_ASSOC_REQ) {
2131 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
2132 HOSTAPD_LEVEL_DEBUG,
2133 "Drop repeated association frame seq_ctrl=0x%x",
2134 seq_ctrl);
2135 return;
2136 }
2137 sta->last_seq_ctrl = seq_ctrl;
2138 sta->last_subtype = reassoc ? WLAN_FC_STYPE_REASSOC_REQ :
2139 WLAN_FC_STYPE_ASSOC_REQ;
2140
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07002141 if (hapd->tkip_countermeasures) {
2142 resp = WLAN_REASON_MICHAEL_MIC_FAILURE;
2143 goto fail;
2144 }
2145
2146 if (listen_interval > hapd->conf->max_listen_interval) {
2147 hostapd_logger(hapd, mgmt->sa, HOSTAPD_MODULE_IEEE80211,
2148 HOSTAPD_LEVEL_DEBUG,
2149 "Too large Listen Interval (%d)",
2150 listen_interval);
2151 resp = WLAN_STATUS_ASSOC_DENIED_LISTEN_INT_TOO_LARGE;
2152 goto fail;
2153 }
2154
Dmitry Shmidt57c2d392016-02-23 13:40:19 -08002155#ifdef CONFIG_MBO
2156 if (hapd->conf->mbo_enabled && hapd->mbo_assoc_disallow) {
2157 resp = WLAN_STATUS_AP_UNABLE_TO_HANDLE_NEW_STA;
2158 goto fail;
2159 }
2160#endif /* CONFIG_MBO */
2161
Dmitry Shmidt849734c2016-05-27 09:59:01 -07002162 /*
2163 * sta->capability is used in check_assoc_ies() for RRM enabled
2164 * capability element.
2165 */
2166 sta->capability = capab_info;
2167
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07002168 /* followed by SSID and Supported rates; and HT capabilities if 802.11n
2169 * is used */
2170 resp = check_assoc_ies(hapd, sta, pos, left, reassoc);
2171 if (resp != WLAN_STATUS_SUCCESS)
2172 goto fail;
2173
2174 if (hostapd_get_aid(hapd, sta) < 0) {
2175 hostapd_logger(hapd, mgmt->sa, HOSTAPD_MODULE_IEEE80211,
2176 HOSTAPD_LEVEL_INFO, "No room for more AIDs");
2177 resp = WLAN_STATUS_AP_UNABLE_TO_HANDLE_NEW_STA;
2178 goto fail;
2179 }
2180
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07002181 sta->listen_interval = listen_interval;
2182
2183 if (hapd->iface->current_mode->mode == HOSTAPD_MODE_IEEE80211G)
2184 sta->flags |= WLAN_STA_NONERP;
2185 for (i = 0; i < sta->supported_rates_len; i++) {
2186 if ((sta->supported_rates[i] & 0x7f) > 22) {
2187 sta->flags &= ~WLAN_STA_NONERP;
2188 break;
2189 }
2190 }
2191 if (sta->flags & WLAN_STA_NONERP && !sta->nonerp_set) {
2192 sta->nonerp_set = 1;
2193 hapd->iface->num_sta_non_erp++;
2194 if (hapd->iface->num_sta_non_erp == 1)
2195 ieee802_11_set_beacons(hapd->iface);
2196 }
2197
2198 if (!(sta->capability & WLAN_CAPABILITY_SHORT_SLOT_TIME) &&
2199 !sta->no_short_slot_time_set) {
2200 sta->no_short_slot_time_set = 1;
2201 hapd->iface->num_sta_no_short_slot_time++;
2202 if (hapd->iface->current_mode->mode ==
2203 HOSTAPD_MODE_IEEE80211G &&
2204 hapd->iface->num_sta_no_short_slot_time == 1)
2205 ieee802_11_set_beacons(hapd->iface);
2206 }
2207
2208 if (sta->capability & WLAN_CAPABILITY_SHORT_PREAMBLE)
2209 sta->flags |= WLAN_STA_SHORT_PREAMBLE;
2210 else
2211 sta->flags &= ~WLAN_STA_SHORT_PREAMBLE;
2212
2213 if (!(sta->capability & WLAN_CAPABILITY_SHORT_PREAMBLE) &&
2214 !sta->no_short_preamble_set) {
2215 sta->no_short_preamble_set = 1;
2216 hapd->iface->num_sta_no_short_preamble++;
2217 if (hapd->iface->current_mode->mode == HOSTAPD_MODE_IEEE80211G
2218 && hapd->iface->num_sta_no_short_preamble == 1)
2219 ieee802_11_set_beacons(hapd->iface);
2220 }
2221
2222#ifdef CONFIG_IEEE80211N
2223 update_ht_state(hapd, sta);
2224#endif /* CONFIG_IEEE80211N */
2225
2226 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
2227 HOSTAPD_LEVEL_DEBUG,
2228 "association OK (aid %d)", sta->aid);
2229 /* Station will be marked associated, after it acknowledges AssocResp
2230 */
2231 sta->flags |= WLAN_STA_ASSOC_REQ_OK;
2232
2233#ifdef CONFIG_IEEE80211W
2234 if ((sta->flags & WLAN_STA_MFP) && sta->sa_query_timed_out) {
2235 wpa_printf(MSG_DEBUG, "Allowing %sassociation after timed out "
2236 "SA Query procedure", reassoc ? "re" : "");
2237 /* TODO: Send a protected Disassociate frame to the STA using
2238 * the old key and Reason Code "Previous Authentication no
2239 * longer valid". Make sure this is only sent protected since
2240 * unprotected frame would be received by the STA that is now
2241 * trying to associate.
2242 */
2243 }
2244#endif /* CONFIG_IEEE80211W */
2245
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07002246 /* Make sure that the previously registered inactivity timer will not
2247 * remove the STA immediately. */
2248 sta->timeout_next = STA_NULLFUNC;
2249
2250 fail:
Dmitry Shmidt57c2d392016-02-23 13:40:19 -08002251 /*
2252 * In case of a successful response, add the station to the driver.
2253 * Otherwise, the kernel may ignore Data frames before we process the
2254 * ACK frame (TX status). In case of a failure, this station will be
2255 * removed.
2256 *
2257 * Note that this is not compliant with the IEEE 802.11 standard that
2258 * states that a non-AP station should transition into the
2259 * authenticated/associated state only after the station acknowledges
2260 * the (Re)Association Response frame. However, still do this as:
2261 *
2262 * 1. In case the station does not acknowledge the (Re)Association
2263 * Response frame, it will be removed.
2264 * 2. Data frames will be dropped in the kernel until the station is
2265 * set into authorized state, and there are no significant known
2266 * issues with processing other non-Data Class 3 frames during this
2267 * window.
2268 */
2269 if (resp == WLAN_STATUS_SUCCESS && add_associated_sta(hapd, sta))
2270 resp = WLAN_STATUS_AP_UNABLE_TO_HANDLE_NEW_STA;
2271
2272 reply_res = send_assoc_resp(hapd, sta, resp, reassoc, pos, left);
2273
2274 /*
2275 * Remove the station in case tranmission of a success response fails
2276 * (the STA was added associated to the driver) or if the station was
2277 * previously added unassociated.
2278 */
2279 if ((reply_res != WLAN_STATUS_SUCCESS &&
2280 resp == WLAN_STATUS_SUCCESS) || sta->added_unassoc) {
2281 hostapd_drv_sta_remove(hapd, sta->addr);
2282 sta->added_unassoc = 0;
2283 }
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07002284}
2285
2286
2287static void handle_disassoc(struct hostapd_data *hapd,
2288 const struct ieee80211_mgmt *mgmt, size_t len)
2289{
2290 struct sta_info *sta;
2291
2292 if (len < IEEE80211_HDRLEN + sizeof(mgmt->u.disassoc)) {
Dmitry Shmidtcce06662013-11-04 18:44:24 -08002293 wpa_printf(MSG_INFO, "handle_disassoc - too short payload (len=%lu)",
2294 (unsigned long) len);
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07002295 return;
2296 }
2297
2298 wpa_printf(MSG_DEBUG, "disassocation: STA=" MACSTR " reason_code=%d",
2299 MAC2STR(mgmt->sa),
2300 le_to_host16(mgmt->u.disassoc.reason_code));
2301
2302 sta = ap_get_sta(hapd, mgmt->sa);
2303 if (sta == NULL) {
Dmitry Shmidtcce06662013-11-04 18:44:24 -08002304 wpa_printf(MSG_INFO, "Station " MACSTR " trying to disassociate, but it is not associated",
2305 MAC2STR(mgmt->sa));
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07002306 return;
2307 }
2308
Dmitry Shmidt1f69aa52012-01-24 16:10:04 -08002309 ap_sta_set_authorized(hapd, sta, 0);
Dmitry Shmidt6c0da2b2015-01-05 13:08:17 -08002310 sta->last_seq_ctrl = WLAN_INVALID_MGMT_SEQ;
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07002311 sta->flags &= ~(WLAN_STA_ASSOC | WLAN_STA_ASSOC_REQ_OK);
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07002312 wpa_auth_sm_event(sta->wpa_sm, WPA_DISASSOC);
2313 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
2314 HOSTAPD_LEVEL_INFO, "disassociated");
2315 sta->acct_terminate_cause = RADIUS_ACCT_TERMINATE_CAUSE_USER_REQUEST;
2316 ieee802_1x_notify_port_enabled(sta->eapol_sm, 0);
2317 /* Stop Accounting and IEEE 802.1X sessions, but leave the STA
2318 * authenticated. */
2319 accounting_sta_stop(hapd, sta);
Dmitry Shmidtde47be72016-01-07 12:52:55 -08002320 ieee802_1x_free_station(hapd, sta);
Dmitry Shmidt6c0da2b2015-01-05 13:08:17 -08002321 if (sta->ipaddr)
2322 hostapd_drv_br_delete_ip_neigh(hapd, 4, (u8 *) &sta->ipaddr);
2323 ap_sta_ip6addr_del(hapd, sta);
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07002324 hostapd_drv_sta_remove(hapd, sta->addr);
Dmitry Shmidt57c2d392016-02-23 13:40:19 -08002325 sta->added_unassoc = 0;
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07002326
2327 if (sta->timeout_next == STA_NULLFUNC ||
2328 sta->timeout_next == STA_DISASSOC) {
2329 sta->timeout_next = STA_DEAUTH;
2330 eloop_cancel_timeout(ap_handle_timer, hapd, sta);
2331 eloop_register_timeout(AP_DEAUTH_DELAY, 0, ap_handle_timer,
2332 hapd, sta);
2333 }
2334
2335 mlme_disassociate_indication(
2336 hapd, sta, le_to_host16(mgmt->u.disassoc.reason_code));
2337}
2338
2339
2340static void handle_deauth(struct hostapd_data *hapd,
2341 const struct ieee80211_mgmt *mgmt, size_t len)
2342{
2343 struct sta_info *sta;
2344
2345 if (len < IEEE80211_HDRLEN + sizeof(mgmt->u.deauth)) {
Dmitry Shmidt1f69aa52012-01-24 16:10:04 -08002346 wpa_msg(hapd->msg_ctx, MSG_DEBUG, "handle_deauth - too short "
2347 "payload (len=%lu)", (unsigned long) len);
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07002348 return;
2349 }
2350
Dmitry Shmidt1f69aa52012-01-24 16:10:04 -08002351 wpa_msg(hapd->msg_ctx, MSG_DEBUG, "deauthentication: STA=" MACSTR
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07002352 " reason_code=%d",
2353 MAC2STR(mgmt->sa), le_to_host16(mgmt->u.deauth.reason_code));
2354
2355 sta = ap_get_sta(hapd, mgmt->sa);
2356 if (sta == NULL) {
Dmitry Shmidt1f69aa52012-01-24 16:10:04 -08002357 wpa_msg(hapd->msg_ctx, MSG_DEBUG, "Station " MACSTR " trying "
2358 "to deauthenticate, but it is not authenticated",
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07002359 MAC2STR(mgmt->sa));
2360 return;
2361 }
2362
Dmitry Shmidt1f69aa52012-01-24 16:10:04 -08002363 ap_sta_set_authorized(hapd, sta, 0);
Dmitry Shmidt6c0da2b2015-01-05 13:08:17 -08002364 sta->last_seq_ctrl = WLAN_INVALID_MGMT_SEQ;
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07002365 sta->flags &= ~(WLAN_STA_AUTH | WLAN_STA_ASSOC |
2366 WLAN_STA_ASSOC_REQ_OK);
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07002367 wpa_auth_sm_event(sta->wpa_sm, WPA_DEAUTH);
2368 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
2369 HOSTAPD_LEVEL_DEBUG, "deauthenticated");
2370 mlme_deauthenticate_indication(
2371 hapd, sta, le_to_host16(mgmt->u.deauth.reason_code));
2372 sta->acct_terminate_cause = RADIUS_ACCT_TERMINATE_CAUSE_USER_REQUEST;
2373 ieee802_1x_notify_port_enabled(sta->eapol_sm, 0);
2374 ap_free_sta(hapd, sta);
2375}
2376
2377
2378static void handle_beacon(struct hostapd_data *hapd,
2379 const struct ieee80211_mgmt *mgmt, size_t len,
2380 struct hostapd_frame_info *fi)
2381{
2382 struct ieee802_11_elems elems;
2383
2384 if (len < IEEE80211_HDRLEN + sizeof(mgmt->u.beacon)) {
Dmitry Shmidtcce06662013-11-04 18:44:24 -08002385 wpa_printf(MSG_INFO, "handle_beacon - too short payload (len=%lu)",
2386 (unsigned long) len);
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07002387 return;
2388 }
2389
2390 (void) ieee802_11_parse_elems(mgmt->u.beacon.variable,
2391 len - (IEEE80211_HDRLEN +
2392 sizeof(mgmt->u.beacon)), &elems,
2393 0);
2394
2395 ap_list_process_beacon(hapd->iface, mgmt, &elems, fi);
2396}
2397
2398
2399#ifdef CONFIG_IEEE80211W
2400
Dmitry Shmidtfb79edc2014-01-10 10:45:54 -08002401static int hostapd_sa_query_action(struct hostapd_data *hapd,
2402 const struct ieee80211_mgmt *mgmt,
2403 size_t len)
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07002404{
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07002405 const u8 *end;
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07002406
2407 end = mgmt->u.action.u.sa_query_resp.trans_id +
2408 WLAN_SA_QUERY_TR_ID_LEN;
2409 if (((u8 *) mgmt) + len < end) {
2410 wpa_printf(MSG_DEBUG, "IEEE 802.11: Too short SA Query Action "
2411 "frame (len=%lu)", (unsigned long) len);
Dmitry Shmidtfb79edc2014-01-10 10:45:54 -08002412 return 0;
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07002413 }
2414
Dmitry Shmidt1f69aa52012-01-24 16:10:04 -08002415 ieee802_11_sa_query_action(hapd, mgmt->sa,
2416 mgmt->u.action.u.sa_query_resp.action,
2417 mgmt->u.action.u.sa_query_resp.trans_id);
Dmitry Shmidtfb79edc2014-01-10 10:45:54 -08002418 return 1;
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07002419}
2420
2421
2422static int robust_action_frame(u8 category)
2423{
2424 return category != WLAN_ACTION_PUBLIC &&
2425 category != WLAN_ACTION_HT;
2426}
2427#endif /* CONFIG_IEEE80211W */
2428
2429
Dmitry Shmidtfb79edc2014-01-10 10:45:54 -08002430static int handle_action(struct hostapd_data *hapd,
2431 const struct ieee80211_mgmt *mgmt, size_t len)
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07002432{
2433 struct sta_info *sta;
Dmitry Shmidt1f69aa52012-01-24 16:10:04 -08002434 sta = ap_get_sta(hapd, mgmt->sa);
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07002435
2436 if (len < IEEE80211_HDRLEN + 1) {
2437 hostapd_logger(hapd, mgmt->sa, HOSTAPD_MODULE_IEEE80211,
2438 HOSTAPD_LEVEL_DEBUG,
2439 "handle_action - too short payload (len=%lu)",
2440 (unsigned long) len);
Dmitry Shmidtfb79edc2014-01-10 10:45:54 -08002441 return 0;
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07002442 }
2443
Dmitry Shmidta54fa5f2013-01-15 13:53:35 -08002444 if (mgmt->u.action.category != WLAN_ACTION_PUBLIC &&
2445 (sta == NULL || !(sta->flags & WLAN_STA_ASSOC))) {
2446 wpa_printf(MSG_DEBUG, "IEEE 802.11: Ignored Action "
2447 "frame (category=%u) from unassociated STA " MACSTR,
2448 MAC2STR(mgmt->sa), mgmt->u.action.category);
Dmitry Shmidtfb79edc2014-01-10 10:45:54 -08002449 return 0;
Dmitry Shmidta54fa5f2013-01-15 13:53:35 -08002450 }
2451
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07002452#ifdef CONFIG_IEEE80211W
2453 if (sta && (sta->flags & WLAN_STA_MFP) &&
Dmitry Shmidt18463232014-01-24 12:29:41 -08002454 !(mgmt->frame_control & host_to_le16(WLAN_FC_ISWEP)) &&
2455 robust_action_frame(mgmt->u.action.category)) {
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07002456 hostapd_logger(hapd, mgmt->sa, HOSTAPD_MODULE_IEEE80211,
2457 HOSTAPD_LEVEL_DEBUG,
2458 "Dropped unprotected Robust Action frame from "
2459 "an MFP STA");
Dmitry Shmidtfb79edc2014-01-10 10:45:54 -08002460 return 0;
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07002461 }
2462#endif /* CONFIG_IEEE80211W */
2463
Dmitry Shmidt6c0da2b2015-01-05 13:08:17 -08002464 if (sta) {
2465 u16 fc = le_to_host16(mgmt->frame_control);
2466 u16 seq_ctrl = le_to_host16(mgmt->seq_ctrl);
2467
2468 if ((fc & WLAN_FC_RETRY) &&
2469 sta->last_seq_ctrl != WLAN_INVALID_MGMT_SEQ &&
2470 sta->last_seq_ctrl == seq_ctrl &&
2471 sta->last_subtype == WLAN_FC_STYPE_ACTION) {
2472 hostapd_logger(hapd, sta->addr,
2473 HOSTAPD_MODULE_IEEE80211,
2474 HOSTAPD_LEVEL_DEBUG,
2475 "Drop repeated action frame seq_ctrl=0x%x",
2476 seq_ctrl);
2477 return 1;
2478 }
2479
2480 sta->last_seq_ctrl = seq_ctrl;
2481 sta->last_subtype = WLAN_FC_STYPE_ACTION;
2482 }
2483
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07002484 switch (mgmt->u.action.category) {
2485#ifdef CONFIG_IEEE80211R
2486 case WLAN_ACTION_FT:
Dmitry Shmidt7832adb2014-04-29 10:53:02 -07002487 if (!sta ||
2488 wpa_ft_action_rx(sta->wpa_sm, (u8 *) &mgmt->u.action,
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07002489 len - IEEE80211_HDRLEN))
2490 break;
Dmitry Shmidtfb79edc2014-01-10 10:45:54 -08002491 return 1;
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07002492#endif /* CONFIG_IEEE80211R */
2493 case WLAN_ACTION_WMM:
2494 hostapd_wmm_action(hapd, mgmt, len);
Dmitry Shmidtfb79edc2014-01-10 10:45:54 -08002495 return 1;
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07002496#ifdef CONFIG_IEEE80211W
2497 case WLAN_ACTION_SA_QUERY:
Dmitry Shmidtfb79edc2014-01-10 10:45:54 -08002498 return hostapd_sa_query_action(hapd, mgmt, len);
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07002499#endif /* CONFIG_IEEE80211W */
Dmitry Shmidta54fa5f2013-01-15 13:53:35 -08002500#ifdef CONFIG_WNM
2501 case WLAN_ACTION_WNM:
Dmitry Shmidtfb79edc2014-01-10 10:45:54 -08002502 ieee802_11_rx_wnm_action_ap(hapd, mgmt, len);
2503 return 1;
Dmitry Shmidta54fa5f2013-01-15 13:53:35 -08002504#endif /* CONFIG_WNM */
Dmitry Shmidtd80a4012015-11-05 16:35:40 -08002505#ifdef CONFIG_FST
2506 case WLAN_ACTION_FST:
2507 if (hapd->iface->fst)
2508 fst_rx_action(hapd->iface->fst, mgmt, len);
2509 else
2510 wpa_printf(MSG_DEBUG,
2511 "FST: Ignore FST Action frame - no FST attached");
2512 return 1;
2513#endif /* CONFIG_FST */
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07002514 case WLAN_ACTION_PUBLIC:
Dmitry Shmidt18463232014-01-24 12:29:41 -08002515 case WLAN_ACTION_PROTECTED_DUAL:
Dmitry Shmidt7832adb2014-04-29 10:53:02 -07002516#ifdef CONFIG_IEEE80211N
Dmitry Shmidtcc00d5d2015-05-04 10:34:12 -07002517 if (len >= IEEE80211_HDRLEN + 2 &&
2518 mgmt->u.action.u.public_action.action ==
Dmitry Shmidt7832adb2014-04-29 10:53:02 -07002519 WLAN_PA_20_40_BSS_COEX) {
2520 wpa_printf(MSG_DEBUG,
2521 "HT20/40 coex mgmt frame received from STA "
2522 MACSTR, MAC2STR(mgmt->sa));
2523 hostapd_2040_coex_action(hapd, mgmt, len);
2524 }
2525#endif /* CONFIG_IEEE80211N */
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07002526 if (hapd->public_action_cb) {
2527 hapd->public_action_cb(hapd->public_action_cb_ctx,
2528 (u8 *) mgmt, len,
2529 hapd->iface->freq);
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07002530 }
Dmitry Shmidt4b9d52f2013-02-05 17:44:43 -08002531 if (hapd->public_action_cb2) {
Dmitry Shmidtf8623282013-02-20 14:34:59 -08002532 hapd->public_action_cb2(hapd->public_action_cb2_ctx,
Dmitry Shmidt4b9d52f2013-02-05 17:44:43 -08002533 (u8 *) mgmt, len,
2534 hapd->iface->freq);
2535 }
2536 if (hapd->public_action_cb || hapd->public_action_cb2)
Dmitry Shmidtfb79edc2014-01-10 10:45:54 -08002537 return 1;
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07002538 break;
2539 case WLAN_ACTION_VENDOR_SPECIFIC:
2540 if (hapd->vendor_action_cb) {
2541 if (hapd->vendor_action_cb(hapd->vendor_action_cb_ctx,
2542 (u8 *) mgmt, len,
2543 hapd->iface->freq) == 0)
Dmitry Shmidtfb79edc2014-01-10 10:45:54 -08002544 return 1;
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07002545 }
2546 break;
Dmitry Shmidt849734c2016-05-27 09:59:01 -07002547 case WLAN_ACTION_RADIO_MEASUREMENT:
2548 hostapd_handle_radio_measurement(hapd, (const u8 *) mgmt, len);
2549 return 1;
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07002550 }
2551
2552 hostapd_logger(hapd, mgmt->sa, HOSTAPD_MODULE_IEEE80211,
2553 HOSTAPD_LEVEL_DEBUG,
2554 "handle_action - unknown action category %d or invalid "
2555 "frame",
2556 mgmt->u.action.category);
2557 if (!(mgmt->da[0] & 0x01) && !(mgmt->u.action.category & 0x80) &&
2558 !(mgmt->sa[0] & 0x01)) {
2559 struct ieee80211_mgmt *resp;
2560
2561 /*
2562 * IEEE 802.11-REVma/D9.0 - 7.3.1.11
2563 * Return the Action frame to the source without change
2564 * except that MSB of the Category set to 1.
2565 */
2566 wpa_printf(MSG_DEBUG, "IEEE 802.11: Return unknown Action "
2567 "frame back to sender");
2568 resp = os_malloc(len);
2569 if (resp == NULL)
Dmitry Shmidtfb79edc2014-01-10 10:45:54 -08002570 return 0;
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07002571 os_memcpy(resp, mgmt, len);
2572 os_memcpy(resp->da, resp->sa, ETH_ALEN);
2573 os_memcpy(resp->sa, hapd->own_addr, ETH_ALEN);
2574 os_memcpy(resp->bssid, hapd->own_addr, ETH_ALEN);
2575 resp->u.action.category |= 0x80;
2576
Dmitry Shmidt61d9df32012-08-29 16:22:06 -07002577 if (hostapd_drv_send_mlme(hapd, resp, len, 0) < 0) {
2578 wpa_printf(MSG_ERROR, "IEEE 802.11: Failed to send "
2579 "Action frame");
2580 }
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07002581 os_free(resp);
2582 }
Dmitry Shmidtfb79edc2014-01-10 10:45:54 -08002583
2584 return 1;
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07002585}
2586
2587
2588/**
2589 * ieee802_11_mgmt - process incoming IEEE 802.11 management frames
2590 * @hapd: hostapd BSS data structure (the BSS to which the management frame was
2591 * sent to)
2592 * @buf: management frame data (starting from IEEE 802.11 header)
2593 * @len: length of frame data in octets
2594 * @fi: meta data about received frame (signal level, etc.)
2595 *
2596 * Process all incoming IEEE 802.11 management frames. This will be called for
2597 * each frame received from the kernel driver through wlan#ap interface. In
2598 * addition, it can be called to re-inserted pending frames (e.g., when using
2599 * external RADIUS server as an MAC ACL).
2600 */
Dmitry Shmidtfb79edc2014-01-10 10:45:54 -08002601int ieee802_11_mgmt(struct hostapd_data *hapd, const u8 *buf, size_t len,
2602 struct hostapd_frame_info *fi)
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07002603{
2604 struct ieee80211_mgmt *mgmt;
2605 int broadcast;
2606 u16 fc, stype;
Dmitry Shmidtfb79edc2014-01-10 10:45:54 -08002607 int ret = 0;
2608
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07002609 if (len < 24)
Dmitry Shmidtfb79edc2014-01-10 10:45:54 -08002610 return 0;
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07002611
2612 mgmt = (struct ieee80211_mgmt *) buf;
2613 fc = le_to_host16(mgmt->frame_control);
2614 stype = WLAN_FC_GET_STYPE(fc);
2615
2616 if (stype == WLAN_FC_STYPE_BEACON) {
2617 handle_beacon(hapd, mgmt, len, fi);
Dmitry Shmidtfb79edc2014-01-10 10:45:54 -08002618 return 1;
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07002619 }
2620
2621 broadcast = mgmt->bssid[0] == 0xff && mgmt->bssid[1] == 0xff &&
2622 mgmt->bssid[2] == 0xff && mgmt->bssid[3] == 0xff &&
2623 mgmt->bssid[4] == 0xff && mgmt->bssid[5] == 0xff;
2624
2625 if (!broadcast &&
Dmitry Shmidt1f69aa52012-01-24 16:10:04 -08002626#ifdef CONFIG_P2P
2627 /* Invitation responses can be sent with the peer MAC as BSSID */
2628 !((hapd->conf->p2p & P2P_GROUP_OWNER) &&
2629 stype == WLAN_FC_STYPE_ACTION) &&
2630#endif /* CONFIG_P2P */
Dmitry Shmidt6c0da2b2015-01-05 13:08:17 -08002631#ifdef CONFIG_MESH
2632 !(hapd->conf->mesh & MESH_ENABLED) &&
2633#endif /* CONFIG_MESH */
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07002634 os_memcmp(mgmt->bssid, hapd->own_addr, ETH_ALEN) != 0) {
Dmitry Shmidtcce06662013-11-04 18:44:24 -08002635 wpa_printf(MSG_INFO, "MGMT: BSSID=" MACSTR " not our address",
2636 MAC2STR(mgmt->bssid));
Dmitry Shmidtfb79edc2014-01-10 10:45:54 -08002637 return 0;
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07002638 }
2639
2640
2641 if (stype == WLAN_FC_STYPE_PROBE_REQ) {
Dmitry Shmidt04949592012-07-19 12:16:46 -07002642 handle_probe_req(hapd, mgmt, len, fi->ssi_signal);
Dmitry Shmidtfb79edc2014-01-10 10:45:54 -08002643 return 1;
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07002644 }
2645
2646 if (os_memcmp(mgmt->da, hapd->own_addr, ETH_ALEN) != 0) {
2647 hostapd_logger(hapd, mgmt->sa, HOSTAPD_MODULE_IEEE80211,
2648 HOSTAPD_LEVEL_DEBUG,
2649 "MGMT: DA=" MACSTR " not our address",
2650 MAC2STR(mgmt->da));
Dmitry Shmidtfb79edc2014-01-10 10:45:54 -08002651 return 0;
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07002652 }
2653
Dmitry Shmidtd80a4012015-11-05 16:35:40 -08002654 if (hapd->iconf->track_sta_max_num)
2655 sta_track_add(hapd->iface, mgmt->sa);
2656
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07002657 switch (stype) {
2658 case WLAN_FC_STYPE_AUTH:
2659 wpa_printf(MSG_DEBUG, "mgmt::auth");
2660 handle_auth(hapd, mgmt, len);
Dmitry Shmidtfb79edc2014-01-10 10:45:54 -08002661 ret = 1;
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07002662 break;
2663 case WLAN_FC_STYPE_ASSOC_REQ:
2664 wpa_printf(MSG_DEBUG, "mgmt::assoc_req");
2665 handle_assoc(hapd, mgmt, len, 0);
Dmitry Shmidtfb79edc2014-01-10 10:45:54 -08002666 ret = 1;
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07002667 break;
2668 case WLAN_FC_STYPE_REASSOC_REQ:
2669 wpa_printf(MSG_DEBUG, "mgmt::reassoc_req");
2670 handle_assoc(hapd, mgmt, len, 1);
Dmitry Shmidtfb79edc2014-01-10 10:45:54 -08002671 ret = 1;
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07002672 break;
2673 case WLAN_FC_STYPE_DISASSOC:
2674 wpa_printf(MSG_DEBUG, "mgmt::disassoc");
2675 handle_disassoc(hapd, mgmt, len);
Dmitry Shmidtfb79edc2014-01-10 10:45:54 -08002676 ret = 1;
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07002677 break;
2678 case WLAN_FC_STYPE_DEAUTH:
Dmitry Shmidt1f69aa52012-01-24 16:10:04 -08002679 wpa_msg(hapd->msg_ctx, MSG_DEBUG, "mgmt::deauth");
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07002680 handle_deauth(hapd, mgmt, len);
Dmitry Shmidtfb79edc2014-01-10 10:45:54 -08002681 ret = 1;
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07002682 break;
2683 case WLAN_FC_STYPE_ACTION:
2684 wpa_printf(MSG_DEBUG, "mgmt::action");
Dmitry Shmidtfb79edc2014-01-10 10:45:54 -08002685 ret = handle_action(hapd, mgmt, len);
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07002686 break;
2687 default:
2688 hostapd_logger(hapd, mgmt->sa, HOSTAPD_MODULE_IEEE80211,
2689 HOSTAPD_LEVEL_DEBUG,
2690 "unknown mgmt frame subtype %d", stype);
2691 break;
2692 }
Dmitry Shmidtfb79edc2014-01-10 10:45:54 -08002693
2694 return ret;
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07002695}
2696
2697
2698static void handle_auth_cb(struct hostapd_data *hapd,
2699 const struct ieee80211_mgmt *mgmt,
2700 size_t len, int ok)
2701{
2702 u16 auth_alg, auth_transaction, status_code;
2703 struct sta_info *sta;
2704
Dmitry Shmidt57c2d392016-02-23 13:40:19 -08002705 sta = ap_get_sta(hapd, mgmt->da);
2706 if (!sta) {
2707 wpa_printf(MSG_INFO, "handle_auth_cb: STA " MACSTR " not found",
2708 MAC2STR(mgmt->da));
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07002709 return;
2710 }
2711
2712 auth_alg = le_to_host16(mgmt->u.auth.auth_alg);
2713 auth_transaction = le_to_host16(mgmt->u.auth.auth_transaction);
2714 status_code = le_to_host16(mgmt->u.auth.status_code);
2715
Dmitry Shmidt57c2d392016-02-23 13:40:19 -08002716 if (!ok) {
2717 hostapd_logger(hapd, mgmt->da, HOSTAPD_MODULE_IEEE80211,
2718 HOSTAPD_LEVEL_NOTICE,
2719 "did not acknowledge authentication response");
2720 goto fail;
2721 }
2722
2723 if (len < IEEE80211_HDRLEN + sizeof(mgmt->u.auth)) {
2724 wpa_printf(MSG_INFO, "handle_auth_cb - too short payload (len=%lu)",
2725 (unsigned long) len);
2726 goto fail;
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07002727 }
2728
2729 if (status_code == WLAN_STATUS_SUCCESS &&
2730 ((auth_alg == WLAN_AUTH_OPEN && auth_transaction == 2) ||
2731 (auth_alg == WLAN_AUTH_SHARED_KEY && auth_transaction == 4))) {
2732 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
2733 HOSTAPD_LEVEL_INFO, "authenticated");
2734 sta->flags |= WLAN_STA_AUTH;
Dmitry Shmidt57c2d392016-02-23 13:40:19 -08002735 if (sta->added_unassoc)
2736 hostapd_set_sta_flags(hapd, sta);
2737 return;
2738 }
2739
2740fail:
2741 if (status_code != WLAN_STATUS_SUCCESS && sta->added_unassoc) {
2742 hostapd_drv_sta_remove(hapd, sta->addr);
2743 sta->added_unassoc = 0;
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07002744 }
2745}
2746
2747
Dmitry Shmidtc2ebb4b2013-07-24 12:57:51 -07002748static void hostapd_set_wds_encryption(struct hostapd_data *hapd,
2749 struct sta_info *sta,
2750 char *ifname_wds)
2751{
2752 int i;
Dmitry Shmidt9d9e6022015-04-23 10:34:55 -07002753 struct hostapd_ssid *ssid = &hapd->conf->ssid;
Dmitry Shmidtc2ebb4b2013-07-24 12:57:51 -07002754
2755 if (hapd->conf->ieee802_1x || hapd->conf->wpa)
2756 return;
2757
2758 for (i = 0; i < 4; i++) {
2759 if (ssid->wep.key[i] &&
2760 hostapd_drv_set_key(ifname_wds, hapd, WPA_ALG_WEP, NULL, i,
2761 i == ssid->wep.idx, NULL, 0,
2762 ssid->wep.key[i], ssid->wep.len[i])) {
2763 wpa_printf(MSG_WARNING,
2764 "Could not set WEP keys for WDS interface; %s",
2765 ifname_wds);
2766 break;
2767 }
2768 }
2769}
2770
2771
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07002772static void handle_assoc_cb(struct hostapd_data *hapd,
2773 const struct ieee80211_mgmt *mgmt,
2774 size_t len, int reassoc, int ok)
2775{
2776 u16 status;
2777 struct sta_info *sta;
2778 int new_assoc = 1;
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07002779
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07002780 sta = ap_get_sta(hapd, mgmt->da);
2781 if (!sta) {
Dmitry Shmidtcce06662013-11-04 18:44:24 -08002782 wpa_printf(MSG_INFO, "handle_assoc_cb: STA " MACSTR " not found",
2783 MAC2STR(mgmt->da));
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07002784 return;
2785 }
2786
Dmitry Shmidt57c2d392016-02-23 13:40:19 -08002787 if (len < IEEE80211_HDRLEN + (reassoc ? sizeof(mgmt->u.reassoc_resp) :
2788 sizeof(mgmt->u.assoc_resp))) {
2789 wpa_printf(MSG_INFO,
2790 "handle_assoc_cb(reassoc=%d) - too short payload (len=%lu)",
2791 reassoc, (unsigned long) len);
2792 hostapd_drv_sta_remove(hapd, sta->addr);
Dmitry Shmidtaa532512012-09-24 10:35:31 -07002793 return;
2794 }
2795
2796 if (reassoc)
2797 status = le_to_host16(mgmt->u.reassoc_resp.status_code);
2798 else
2799 status = le_to_host16(mgmt->u.assoc_resp.status_code);
2800
Dmitry Shmidt57c2d392016-02-23 13:40:19 -08002801 if (!ok) {
2802 hostapd_logger(hapd, mgmt->da, HOSTAPD_MODULE_IEEE80211,
2803 HOSTAPD_LEVEL_DEBUG,
2804 "did not acknowledge association response");
2805 sta->flags &= ~WLAN_STA_ASSOC_REQ_OK;
2806 /* The STA is added only in case of SUCCESS */
2807 if (status == WLAN_STATUS_SUCCESS)
2808 hostapd_drv_sta_remove(hapd, sta->addr);
2809
2810 return;
2811 }
2812
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07002813 if (status != WLAN_STATUS_SUCCESS)
Dmitry Shmidtb36ed7c2014-03-17 10:57:26 -07002814 return;
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07002815
2816 /* Stop previous accounting session, if one is started, and allocate
2817 * new session id for the new session. */
2818 accounting_sta_stop(hapd, sta);
2819
2820 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
2821 HOSTAPD_LEVEL_INFO,
2822 "associated (aid %d)",
2823 sta->aid);
2824
2825 if (sta->flags & WLAN_STA_ASSOC)
2826 new_assoc = 0;
2827 sta->flags |= WLAN_STA_ASSOC;
Dmitry Shmidtfb79edc2014-01-10 10:45:54 -08002828 sta->flags &= ~WLAN_STA_WNM_SLEEP_MODE;
Dmitry Shmidtf21452a2014-02-26 10:55:25 -08002829 if ((!hapd->conf->ieee802_1x && !hapd->conf->wpa && !hapd->conf->osen) ||
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07002830 sta->auth_alg == WLAN_AUTH_FT) {
2831 /*
2832 * Open, static WEP, or FT protocol; no separate authorization
2833 * step.
2834 */
2835 ap_sta_set_authorized(hapd, sta, 1);
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07002836 }
2837
2838 if (reassoc)
2839 mlme_reassociate_indication(hapd, sta);
2840 else
2841 mlme_associate_indication(hapd, sta);
2842
2843#ifdef CONFIG_IEEE80211W
2844 sta->sa_query_timed_out = 0;
2845#endif /* CONFIG_IEEE80211W */
2846
Dmitry Shmidtc2ebb4b2013-07-24 12:57:51 -07002847 if (sta->flags & WLAN_STA_WDS) {
2848 int ret;
2849 char ifname_wds[IFNAMSIZ + 1];
2850
2851 ret = hostapd_set_wds_sta(hapd, ifname_wds, sta->addr,
2852 sta->aid, 1);
2853 if (!ret)
2854 hostapd_set_wds_encryption(hapd, sta, ifname_wds);
2855 }
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07002856
2857 if (sta->eapol_sm == NULL) {
2858 /*
2859 * This STA does not use RADIUS server for EAP authentication,
2860 * so bind it to the selected VLAN interface now, since the
2861 * interface selection is not going to change anymore.
2862 */
Dmitry Shmidt83474442015-04-15 13:47:09 -07002863 if (ap_sta_bind_vlan(hapd, sta) < 0)
Dmitry Shmidtb36ed7c2014-03-17 10:57:26 -07002864 return;
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07002865 } else if (sta->vlan_id) {
2866 /* VLAN ID already set (e.g., by PMKSA caching), so bind STA */
Dmitry Shmidt83474442015-04-15 13:47:09 -07002867 if (ap_sta_bind_vlan(hapd, sta) < 0)
Dmitry Shmidtb36ed7c2014-03-17 10:57:26 -07002868 return;
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07002869 }
2870
2871 hostapd_set_sta_flags(hapd, sta);
2872
2873 if (sta->auth_alg == WLAN_AUTH_FT)
2874 wpa_auth_sm_event(sta->wpa_sm, WPA_ASSOC_FT);
2875 else
2876 wpa_auth_sm_event(sta->wpa_sm, WPA_ASSOC);
2877 hapd->new_assoc_sta_cb(hapd, sta, !new_assoc);
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07002878 ieee802_1x_notify_port_enabled(sta->eapol_sm, 1);
Dmitry Shmidt31a29cc2016-03-09 15:58:17 -08002879
2880 if (sta->pending_eapol_rx) {
2881 struct os_reltime now, age;
2882
2883 os_get_reltime(&now);
2884 os_reltime_sub(&now, &sta->pending_eapol_rx->rx_time, &age);
2885 if (age.sec == 0 && age.usec < 200000) {
2886 wpa_printf(MSG_DEBUG,
2887 "Process pending EAPOL frame that was received from " MACSTR " just before association notification",
2888 MAC2STR(sta->addr));
2889 ieee802_1x_receive(
2890 hapd, mgmt->da,
2891 wpabuf_head(sta->pending_eapol_rx->buf),
2892 wpabuf_len(sta->pending_eapol_rx->buf));
2893 }
2894 wpabuf_free(sta->pending_eapol_rx->buf);
2895 os_free(sta->pending_eapol_rx);
2896 sta->pending_eapol_rx = NULL;
2897 }
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07002898}
2899
2900
Dmitry Shmidt1f69aa52012-01-24 16:10:04 -08002901static void handle_deauth_cb(struct hostapd_data *hapd,
2902 const struct ieee80211_mgmt *mgmt,
2903 size_t len, int ok)
2904{
2905 struct sta_info *sta;
2906 if (mgmt->da[0] & 0x01)
2907 return;
2908 sta = ap_get_sta(hapd, mgmt->da);
2909 if (!sta) {
2910 wpa_printf(MSG_DEBUG, "handle_deauth_cb: STA " MACSTR
2911 " not found", MAC2STR(mgmt->da));
2912 return;
2913 }
2914 if (ok)
2915 wpa_printf(MSG_DEBUG, "STA " MACSTR " acknowledged deauth",
2916 MAC2STR(sta->addr));
2917 else
2918 wpa_printf(MSG_DEBUG, "STA " MACSTR " did not acknowledge "
2919 "deauth", MAC2STR(sta->addr));
2920
2921 ap_sta_deauth_cb(hapd, sta);
2922}
2923
2924
2925static void handle_disassoc_cb(struct hostapd_data *hapd,
2926 const struct ieee80211_mgmt *mgmt,
2927 size_t len, int ok)
2928{
2929 struct sta_info *sta;
2930 if (mgmt->da[0] & 0x01)
2931 return;
2932 sta = ap_get_sta(hapd, mgmt->da);
2933 if (!sta) {
2934 wpa_printf(MSG_DEBUG, "handle_disassoc_cb: STA " MACSTR
2935 " not found", MAC2STR(mgmt->da));
2936 return;
2937 }
2938 if (ok)
2939 wpa_printf(MSG_DEBUG, "STA " MACSTR " acknowledged disassoc",
2940 MAC2STR(sta->addr));
2941 else
2942 wpa_printf(MSG_DEBUG, "STA " MACSTR " did not acknowledge "
2943 "disassoc", MAC2STR(sta->addr));
2944
2945 ap_sta_disassoc_cb(hapd, sta);
2946}
2947
2948
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07002949/**
2950 * ieee802_11_mgmt_cb - Process management frame TX status callback
2951 * @hapd: hostapd BSS data structure (the BSS from which the management frame
2952 * was sent from)
2953 * @buf: management frame data (starting from IEEE 802.11 header)
2954 * @len: length of frame data in octets
2955 * @stype: management frame subtype from frame control field
2956 * @ok: Whether the frame was ACK'ed
2957 */
2958void ieee802_11_mgmt_cb(struct hostapd_data *hapd, const u8 *buf, size_t len,
2959 u16 stype, int ok)
2960{
2961 const struct ieee80211_mgmt *mgmt;
2962 mgmt = (const struct ieee80211_mgmt *) buf;
2963
Dmitry Shmidtfb79edc2014-01-10 10:45:54 -08002964#ifdef CONFIG_TESTING_OPTIONS
2965 if (hapd->ext_mgmt_frame_handling) {
2966 wpa_msg(hapd->msg_ctx, MSG_INFO, "MGMT-TX-STATUS stype=%u ok=%d",
2967 stype, ok);
2968 return;
2969 }
2970#endif /* CONFIG_TESTING_OPTIONS */
2971
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07002972 switch (stype) {
2973 case WLAN_FC_STYPE_AUTH:
2974 wpa_printf(MSG_DEBUG, "mgmt::auth cb");
2975 handle_auth_cb(hapd, mgmt, len, ok);
2976 break;
2977 case WLAN_FC_STYPE_ASSOC_RESP:
2978 wpa_printf(MSG_DEBUG, "mgmt::assoc_resp cb");
2979 handle_assoc_cb(hapd, mgmt, len, 0, ok);
2980 break;
2981 case WLAN_FC_STYPE_REASSOC_RESP:
2982 wpa_printf(MSG_DEBUG, "mgmt::reassoc_resp cb");
2983 handle_assoc_cb(hapd, mgmt, len, 1, ok);
2984 break;
2985 case WLAN_FC_STYPE_PROBE_RESP:
Dmitry Shmidt57c2d392016-02-23 13:40:19 -08002986 wpa_printf(MSG_EXCESSIVE, "mgmt::proberesp cb ok=%d", ok);
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07002987 break;
2988 case WLAN_FC_STYPE_DEAUTH:
Dmitry Shmidt1f69aa52012-01-24 16:10:04 -08002989 wpa_printf(MSG_DEBUG, "mgmt::deauth cb");
2990 handle_deauth_cb(hapd, mgmt, len, ok);
2991 break;
2992 case WLAN_FC_STYPE_DISASSOC:
2993 wpa_printf(MSG_DEBUG, "mgmt::disassoc cb");
2994 handle_disassoc_cb(hapd, mgmt, len, ok);
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07002995 break;
2996 case WLAN_FC_STYPE_ACTION:
Dmitry Shmidt57c2d392016-02-23 13:40:19 -08002997 wpa_printf(MSG_DEBUG, "mgmt::action cb ok=%d", ok);
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07002998 break;
2999 default:
Dmitry Shmidtcce06662013-11-04 18:44:24 -08003000 wpa_printf(MSG_INFO, "unknown mgmt cb frame subtype %d", stype);
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07003001 break;
3002 }
3003}
3004
3005
3006int ieee802_11_get_mib(struct hostapd_data *hapd, char *buf, size_t buflen)
3007{
3008 /* TODO */
3009 return 0;
3010}
3011
3012
3013int ieee802_11_get_mib_sta(struct hostapd_data *hapd, struct sta_info *sta,
3014 char *buf, size_t buflen)
3015{
3016 /* TODO */
3017 return 0;
3018}
3019
3020
3021void hostapd_tx_status(struct hostapd_data *hapd, const u8 *addr,
3022 const u8 *buf, size_t len, int ack)
3023{
3024 struct sta_info *sta;
3025 struct hostapd_iface *iface = hapd->iface;
3026
3027 sta = ap_get_sta(hapd, addr);
3028 if (sta == NULL && iface->num_bss > 1) {
3029 size_t j;
3030 for (j = 0; j < iface->num_bss; j++) {
3031 hapd = iface->bss[j];
3032 sta = ap_get_sta(hapd, addr);
3033 if (sta)
3034 break;
3035 }
3036 }
Dmitry Shmidtc5ec7f52012-03-06 16:33:24 -08003037 if (sta == NULL || !(sta->flags & WLAN_STA_ASSOC))
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07003038 return;
3039 if (sta->flags & WLAN_STA_PENDING_POLL) {
3040 wpa_printf(MSG_DEBUG, "STA " MACSTR " %s pending "
3041 "activity poll", MAC2STR(sta->addr),
3042 ack ? "ACKed" : "did not ACK");
3043 if (ack)
3044 sta->flags &= ~WLAN_STA_PENDING_POLL;
3045 }
3046
3047 ieee802_1x_tx_status(hapd, sta, buf, len, ack);
3048}
3049
3050
Dmitry Shmidt1f69aa52012-01-24 16:10:04 -08003051void hostapd_eapol_tx_status(struct hostapd_data *hapd, const u8 *dst,
3052 const u8 *data, size_t len, int ack)
3053{
3054 struct sta_info *sta;
3055 struct hostapd_iface *iface = hapd->iface;
3056
3057 sta = ap_get_sta(hapd, dst);
3058 if (sta == NULL && iface->num_bss > 1) {
3059 size_t j;
3060 for (j = 0; j < iface->num_bss; j++) {
3061 hapd = iface->bss[j];
3062 sta = ap_get_sta(hapd, dst);
3063 if (sta)
3064 break;
3065 }
3066 }
Dmitry Shmidtc5ec7f52012-03-06 16:33:24 -08003067 if (sta == NULL || !(sta->flags & WLAN_STA_ASSOC)) {
3068 wpa_printf(MSG_DEBUG, "Ignore TX status for Data frame to STA "
3069 MACSTR " that is not currently associated",
3070 MAC2STR(dst));
Dmitry Shmidt1f69aa52012-01-24 16:10:04 -08003071 return;
Dmitry Shmidtc5ec7f52012-03-06 16:33:24 -08003072 }
Dmitry Shmidt1f69aa52012-01-24 16:10:04 -08003073
3074 ieee802_1x_eapol_tx_status(hapd, sta, data, len, ack);
3075}
3076
3077
3078void hostapd_client_poll_ok(struct hostapd_data *hapd, const u8 *addr)
3079{
3080 struct sta_info *sta;
3081 struct hostapd_iface *iface = hapd->iface;
3082
3083 sta = ap_get_sta(hapd, addr);
3084 if (sta == NULL && iface->num_bss > 1) {
3085 size_t j;
3086 for (j = 0; j < iface->num_bss; j++) {
3087 hapd = iface->bss[j];
3088 sta = ap_get_sta(hapd, addr);
3089 if (sta)
3090 break;
3091 }
3092 }
3093 if (sta == NULL)
3094 return;
Dmitry Shmidt849734c2016-05-27 09:59:01 -07003095 wpa_msg(hapd->msg_ctx, MSG_INFO, AP_STA_POLL_OK MACSTR,
3096 MAC2STR(sta->addr));
Dmitry Shmidt1f69aa52012-01-24 16:10:04 -08003097 if (!(sta->flags & WLAN_STA_PENDING_POLL))
3098 return;
3099
3100 wpa_printf(MSG_DEBUG, "STA " MACSTR " ACKed pending "
3101 "activity poll", MAC2STR(sta->addr));
3102 sta->flags &= ~WLAN_STA_PENDING_POLL;
3103}
3104
3105
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07003106void ieee802_11_rx_from_unknown(struct hostapd_data *hapd, const u8 *src,
3107 int wds)
3108{
3109 struct sta_info *sta;
3110
3111 sta = ap_get_sta(hapd, src);
3112 if (sta && (sta->flags & WLAN_STA_ASSOC)) {
Dmitry Shmidtaa532512012-09-24 10:35:31 -07003113 if (!hapd->conf->wds_sta)
3114 return;
3115
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07003116 if (wds && !(sta->flags & WLAN_STA_WDS)) {
Dmitry Shmidtc2ebb4b2013-07-24 12:57:51 -07003117 int ret;
3118 char ifname_wds[IFNAMSIZ + 1];
3119
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07003120 wpa_printf(MSG_DEBUG, "Enable 4-address WDS mode for "
3121 "STA " MACSTR " (aid %u)",
3122 MAC2STR(sta->addr), sta->aid);
3123 sta->flags |= WLAN_STA_WDS;
Dmitry Shmidtc2ebb4b2013-07-24 12:57:51 -07003124 ret = hostapd_set_wds_sta(hapd, ifname_wds,
3125 sta->addr, sta->aid, 1);
3126 if (!ret)
3127 hostapd_set_wds_encryption(hapd, sta,
3128 ifname_wds);
Dmitry Shmidt8d520ff2011-05-09 14:06:53 -07003129 }
3130 return;
3131 }
3132
3133 wpa_printf(MSG_DEBUG, "Data/PS-poll frame from not associated STA "
3134 MACSTR, MAC2STR(src));
3135 if (src[0] & 0x01) {
3136 /* Broadcast bit set in SA?! Ignore the frame silently. */
3137 return;
3138 }
3139
3140 if (sta && (sta->flags & WLAN_STA_ASSOC_REQ_OK)) {
3141 wpa_printf(MSG_DEBUG, "Association Response to the STA has "
3142 "already been sent, but no TX status yet known - "
3143 "ignore Class 3 frame issue with " MACSTR,
3144 MAC2STR(src));
3145 return;
3146 }
3147
3148 if (sta && (sta->flags & WLAN_STA_AUTH))
3149 hostapd_drv_sta_disassoc(
3150 hapd, src,
3151 WLAN_REASON_CLASS3_FRAME_FROM_NONASSOC_STA);
3152 else
3153 hostapd_drv_sta_deauth(
3154 hapd, src,
3155 WLAN_REASON_CLASS3_FRAME_FROM_NONASSOC_STA);
3156}
3157
3158
3159#endif /* CONFIG_NATIVE_WINDOWS */