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Commit | Line | Data |
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c2a04078 JM |
1 | /* |
2 | * wpa_supplicant - SME | |
6ac4b15e | 3 | * Copyright (c) 2009-2014, Jouni Malinen <j@w1.fi> |
c2a04078 | 4 | * |
0f3d578e JM |
5 | * This software may be distributed under the terms of the BSD license. |
6 | * See README for more details. | |
c2a04078 JM |
7 | */ |
8 | ||
9 | #include "includes.h" | |
10 | ||
11 | #include "common.h" | |
7d878ca7 | 12 | #include "utils/eloop.h" |
90973fb2 | 13 | #include "common/ieee802_11_defs.h" |
d9a27b04 | 14 | #include "common/ieee802_11_common.h" |
c2a04078 | 15 | #include "eapol_supp/eapol_supp_sm.h" |
90973fb2 | 16 | #include "common/wpa_common.h" |
98efcc41 | 17 | #include "common/sae.h" |
3acb5005 JM |
18 | #include "rsn_supp/wpa.h" |
19 | #include "rsn_supp/pmksa_cache.h" | |
c2a04078 JM |
20 | #include "config.h" |
21 | #include "wpa_supplicant_i.h" | |
2d5b792d | 22 | #include "driver_i.h" |
c2a04078 JM |
23 | #include "wpas_glue.h" |
24 | #include "wps_supplicant.h" | |
5f3a6aa0 | 25 | #include "p2p_supplicant.h" |
8bac466b | 26 | #include "notify.h" |
6fa81a3b | 27 | #include "bss.h" |
9ba9fa07 | 28 | #include "scan.h" |
c2a04078 | 29 | #include "sme.h" |
cb418324 | 30 | #include "hs20_supplicant.h" |
c2a04078 | 31 | |
e29853bb BG |
32 | #define SME_AUTH_TIMEOUT 5 |
33 | #define SME_ASSOC_TIMEOUT 5 | |
34 | ||
35 | static void sme_auth_timer(void *eloop_ctx, void *timeout_ctx); | |
36 | static void sme_assoc_timer(void *eloop_ctx, void *timeout_ctx); | |
c3701c66 | 37 | static void sme_obss_scan_timeout(void *eloop_ctx, void *timeout_ctx); |
e29853bb BG |
38 | #ifdef CONFIG_IEEE80211W |
39 | static void sme_stop_sa_query(struct wpa_supplicant *wpa_s); | |
40 | #endif /* CONFIG_IEEE80211W */ | |
41 | ||
42 | ||
c10347f2 JM |
43 | #ifdef CONFIG_SAE |
44 | ||
625f202a JM |
45 | static int index_within_array(const int *array, int idx) |
46 | { | |
47 | int i; | |
48 | for (i = 0; i < idx; i++) { | |
18ca7332 | 49 | if (array[i] <= 0) |
625f202a JM |
50 | return 0; |
51 | } | |
52 | return 1; | |
53 | } | |
54 | ||
55 | ||
56 | static int sme_set_sae_group(struct wpa_supplicant *wpa_s) | |
57 | { | |
58 | int *groups = wpa_s->conf->sae_groups; | |
18ca7332 | 59 | int default_groups[] = { 19, 20, 21, 25, 26, 0 }; |
625f202a | 60 | |
18ca7332 | 61 | if (!groups || groups[0] <= 0) |
625f202a JM |
62 | groups = default_groups; |
63 | ||
64 | /* Configuration may have changed, so validate current index */ | |
65 | if (!index_within_array(groups, wpa_s->sme.sae_group_index)) | |
66 | return -1; | |
67 | ||
68 | for (;;) { | |
69 | int group = groups[wpa_s->sme.sae_group_index]; | |
70 | if (group < 0) | |
71 | break; | |
72 | if (sae_set_group(&wpa_s->sme.sae, group) == 0) { | |
73 | wpa_dbg(wpa_s, MSG_DEBUG, "SME: Selected SAE group %d", | |
74 | wpa_s->sme.sae.group); | |
75 | return 0; | |
76 | } | |
77 | wpa_s->sme.sae_group_index++; | |
78 | } | |
79 | ||
80 | return -1; | |
81 | } | |
82 | ||
83 | ||
8e31e955 JM |
84 | static struct wpabuf * sme_auth_build_sae_commit(struct wpa_supplicant *wpa_s, |
85 | struct wpa_ssid *ssid, | |
86 | const u8 *bssid) | |
c10347f2 JM |
87 | { |
88 | struct wpabuf *buf; | |
d136c376 | 89 | size_t len; |
c10347f2 | 90 | |
8e31e955 JM |
91 | if (ssid->passphrase == NULL) { |
92 | wpa_printf(MSG_DEBUG, "SAE: No password available"); | |
93 | return NULL; | |
94 | } | |
95 | ||
625f202a JM |
96 | if (sme_set_sae_group(wpa_s) < 0) { |
97 | wpa_printf(MSG_DEBUG, "SAE: Failed to select group"); | |
a46d72d7 | 98 | return NULL; |
625f202a | 99 | } |
a46d72d7 | 100 | |
8e31e955 JM |
101 | if (sae_prepare_commit(wpa_s->own_addr, bssid, |
102 | (u8 *) ssid->passphrase, | |
103 | os_strlen(ssid->passphrase), | |
104 | &wpa_s->sme.sae) < 0) { | |
105 | wpa_printf(MSG_DEBUG, "SAE: Could not pick PWE"); | |
106 | return NULL; | |
107 | } | |
108 | ||
d136c376 JM |
109 | len = wpa_s->sme.sae_token ? wpabuf_len(wpa_s->sme.sae_token) : 0; |
110 | buf = wpabuf_alloc(4 + SAE_COMMIT_MAX_LEN + len); | |
c10347f2 JM |
111 | if (buf == NULL) |
112 | return NULL; | |
113 | ||
114 | wpabuf_put_le16(buf, 1); /* Transaction seq# */ | |
115 | wpabuf_put_le16(buf, WLAN_STATUS_SUCCESS); | |
d136c376 | 116 | sae_write_commit(&wpa_s->sme.sae, buf, wpa_s->sme.sae_token); |
c10347f2 JM |
117 | |
118 | return buf; | |
119 | } | |
120 | ||
121 | ||
122 | static struct wpabuf * sme_auth_build_sae_confirm(struct wpa_supplicant *wpa_s) | |
123 | { | |
124 | struct wpabuf *buf; | |
125 | ||
fb8fcc29 | 126 | buf = wpabuf_alloc(4 + SAE_CONFIRM_MAX_LEN); |
c10347f2 JM |
127 | if (buf == NULL) |
128 | return NULL; | |
129 | ||
130 | wpabuf_put_le16(buf, 2); /* Transaction seq# */ | |
131 | wpabuf_put_le16(buf, WLAN_STATUS_SUCCESS); | |
fb8fcc29 | 132 | sae_write_confirm(&wpa_s->sme.sae, buf); |
c10347f2 JM |
133 | |
134 | return buf; | |
135 | } | |
136 | ||
137 | #endif /* CONFIG_SAE */ | |
138 | ||
139 | ||
215ae884 JM |
140 | static void sme_send_authentication(struct wpa_supplicant *wpa_s, |
141 | struct wpa_bss *bss, struct wpa_ssid *ssid, | |
142 | int start) | |
c2a04078 JM |
143 | { |
144 | struct wpa_driver_auth_params params; | |
8bac466b | 145 | struct wpa_ssid *old_ssid; |
fdbe50ed | 146 | #ifdef CONFIG_IEEE80211R |
c2a04078 | 147 | const u8 *ie; |
fdbe50ed | 148 | #endif /* CONFIG_IEEE80211R */ |
c2a04078 JM |
149 | #ifdef CONFIG_IEEE80211R |
150 | const u8 *md = NULL; | |
151 | #endif /* CONFIG_IEEE80211R */ | |
8bac466b | 152 | int i, bssid_changed; |
c10347f2 | 153 | struct wpabuf *resp = NULL; |
0bbaa9b9 | 154 | u8 ext_capab[18]; |
03e47c9c | 155 | int ext_capab_len; |
c2a04078 JM |
156 | |
157 | if (bss == NULL) { | |
f049052b BG |
158 | wpa_msg(wpa_s, MSG_ERROR, "SME: No scan result available for " |
159 | "the network"); | |
6ac4b15e | 160 | wpas_connect_work_done(wpa_s); |
c2a04078 JM |
161 | return; |
162 | } | |
163 | ||
8f770587 JM |
164 | wpa_s->current_bss = bss; |
165 | ||
c2a04078 JM |
166 | os_memset(¶ms, 0, sizeof(params)); |
167 | wpa_s->reassociate = 0; | |
168 | ||
169 | params.freq = bss->freq; | |
170 | params.bssid = bss->bssid; | |
6fa81a3b JM |
171 | params.ssid = bss->ssid; |
172 | params.ssid_len = bss->ssid_len; | |
2f4f73b1 | 173 | params.p2p = ssid->p2p_group; |
c2a04078 | 174 | |
62fa124c JM |
175 | if (wpa_s->sme.ssid_len != params.ssid_len || |
176 | os_memcmp(wpa_s->sme.ssid, params.ssid, params.ssid_len) != 0) | |
177 | wpa_s->sme.prev_bssid_set = 0; | |
178 | ||
c2a04078 JM |
179 | wpa_s->sme.freq = params.freq; |
180 | os_memcpy(wpa_s->sme.ssid, params.ssid, params.ssid_len); | |
181 | wpa_s->sme.ssid_len = params.ssid_len; | |
182 | ||
abd9fafa | 183 | params.auth_alg = WPA_AUTH_ALG_OPEN; |
c2a04078 JM |
184 | #ifdef IEEE8021X_EAPOL |
185 | if (ssid->key_mgmt & WPA_KEY_MGMT_IEEE8021X_NO_WPA) { | |
186 | if (ssid->leap) { | |
187 | if (ssid->non_leap == 0) | |
abd9fafa | 188 | params.auth_alg = WPA_AUTH_ALG_LEAP; |
c2a04078 | 189 | else |
abd9fafa | 190 | params.auth_alg |= WPA_AUTH_ALG_LEAP; |
c2a04078 JM |
191 | } |
192 | } | |
193 | #endif /* IEEE8021X_EAPOL */ | |
f049052b BG |
194 | wpa_dbg(wpa_s, MSG_DEBUG, "Automatic auth_alg selection: 0x%x", |
195 | params.auth_alg); | |
c2a04078 | 196 | if (ssid->auth_alg) { |
abd9fafa | 197 | params.auth_alg = ssid->auth_alg; |
f049052b BG |
198 | wpa_dbg(wpa_s, MSG_DEBUG, "Overriding auth_alg selection: " |
199 | "0x%x", params.auth_alg); | |
c2a04078 | 200 | } |
c10347f2 | 201 | #ifdef CONFIG_SAE |
bc26ac50 | 202 | wpa_s->sme.sae_pmksa_caching = 0; |
c10347f2 JM |
203 | if (wpa_key_mgmt_sae(ssid->key_mgmt)) { |
204 | const u8 *rsn; | |
205 | struct wpa_ie_data ied; | |
206 | ||
207 | rsn = wpa_bss_get_ie(bss, WLAN_EID_RSN); | |
208 | if (rsn && | |
209 | wpa_parse_wpa_ie(rsn, 2 + rsn[1], &ied) == 0) { | |
210 | if (wpa_key_mgmt_sae(ied.key_mgmt)) { | |
211 | wpa_dbg(wpa_s, MSG_DEBUG, "Using SAE auth_alg"); | |
212 | params.auth_alg = WPA_AUTH_ALG_SAE; | |
213 | } | |
214 | } | |
215 | } | |
216 | #endif /* CONFIG_SAE */ | |
c2a04078 | 217 | |
a0b2f99b JM |
218 | for (i = 0; i < NUM_WEP_KEYS; i++) { |
219 | if (ssid->wep_key_len[i]) | |
220 | params.wep_key[i] = ssid->wep_key[i]; | |
221 | params.wep_key_len[i] = ssid->wep_key_len[i]; | |
222 | } | |
223 | params.wep_tx_keyidx = ssid->wep_tx_keyidx; | |
224 | ||
8bac466b | 225 | bssid_changed = !is_zero_ether_addr(wpa_s->bssid); |
c2a04078 JM |
226 | os_memset(wpa_s->bssid, 0, ETH_ALEN); |
227 | os_memcpy(wpa_s->pending_bssid, bss->bssid, ETH_ALEN); | |
8bac466b JM |
228 | if (bssid_changed) |
229 | wpas_notify_bssid_changed(wpa_s); | |
c2a04078 | 230 | |
f337f0e9 JM |
231 | if ((wpa_bss_get_vendor_ie(bss, WPA_IE_VENDOR_TYPE) || |
232 | wpa_bss_get_ie(bss, WLAN_EID_RSN)) && | |
0bf927a0 | 233 | wpa_key_mgmt_wpa(ssid->key_mgmt)) { |
c2a04078 | 234 | int try_opportunistic; |
6e202021 JM |
235 | try_opportunistic = (ssid->proactive_key_caching < 0 ? |
236 | wpa_s->conf->okc : | |
237 | ssid->proactive_key_caching) && | |
c2a04078 JM |
238 | (ssid->proto & WPA_PROTO_RSN); |
239 | if (pmksa_cache_set_current(wpa_s->wpa, NULL, bss->bssid, | |
240 | wpa_s->current_ssid, | |
241 | try_opportunistic) == 0) | |
242 | eapol_sm_notify_pmkid_attempt(wpa_s->eapol, 1); | |
243 | wpa_s->sme.assoc_req_ie_len = sizeof(wpa_s->sme.assoc_req_ie); | |
244 | if (wpa_supplicant_set_suites(wpa_s, bss, ssid, | |
245 | wpa_s->sme.assoc_req_ie, | |
246 | &wpa_s->sme.assoc_req_ie_len)) { | |
f049052b BG |
247 | wpa_msg(wpa_s, MSG_WARNING, "SME: Failed to set WPA " |
248 | "key management and encryption suites"); | |
6ac4b15e | 249 | wpas_connect_work_done(wpa_s); |
c2a04078 JM |
250 | return; |
251 | } | |
a3f7e518 JM |
252 | } else if ((ssid->key_mgmt & WPA_KEY_MGMT_IEEE8021X_NO_WPA) && |
253 | wpa_key_mgmt_wpa_ieee8021x(ssid->key_mgmt)) { | |
254 | /* | |
255 | * Both WPA and non-WPA IEEE 802.1X enabled in configuration - | |
256 | * use non-WPA since the scan results did not indicate that the | |
257 | * AP is using WPA or WPA2. | |
258 | */ | |
259 | wpa_supplicant_set_non_wpa_policy(wpa_s, ssid); | |
260 | wpa_s->sme.assoc_req_ie_len = 0; | |
0bf927a0 | 261 | } else if (wpa_key_mgmt_wpa_any(ssid->key_mgmt)) { |
c2a04078 JM |
262 | wpa_s->sme.assoc_req_ie_len = sizeof(wpa_s->sme.assoc_req_ie); |
263 | if (wpa_supplicant_set_suites(wpa_s, NULL, ssid, | |
264 | wpa_s->sme.assoc_req_ie, | |
265 | &wpa_s->sme.assoc_req_ie_len)) { | |
f049052b BG |
266 | wpa_msg(wpa_s, MSG_WARNING, "SME: Failed to set WPA " |
267 | "key management and encryption suites (no " | |
268 | "scan results)"); | |
6ac4b15e | 269 | wpas_connect_work_done(wpa_s); |
c2a04078 JM |
270 | return; |
271 | } | |
272 | #ifdef CONFIG_WPS | |
273 | } else if (ssid->key_mgmt & WPA_KEY_MGMT_WPS) { | |
274 | struct wpabuf *wps_ie; | |
275 | wps_ie = wps_build_assoc_req_ie(wpas_wps_get_req_type(ssid)); | |
276 | if (wps_ie && wpabuf_len(wps_ie) <= | |
277 | sizeof(wpa_s->sme.assoc_req_ie)) { | |
278 | wpa_s->sme.assoc_req_ie_len = wpabuf_len(wps_ie); | |
279 | os_memcpy(wpa_s->sme.assoc_req_ie, wpabuf_head(wps_ie), | |
280 | wpa_s->sme.assoc_req_ie_len); | |
281 | } else | |
282 | wpa_s->sme.assoc_req_ie_len = 0; | |
283 | wpabuf_free(wps_ie); | |
284 | wpa_supplicant_set_non_wpa_policy(wpa_s, ssid); | |
285 | #endif /* CONFIG_WPS */ | |
286 | } else { | |
287 | wpa_supplicant_set_non_wpa_policy(wpa_s, ssid); | |
288 | wpa_s->sme.assoc_req_ie_len = 0; | |
289 | } | |
290 | ||
291 | #ifdef CONFIG_IEEE80211R | |
6fa81a3b | 292 | ie = wpa_bss_get_ie(bss, WLAN_EID_MOBILITY_DOMAIN); |
c2a04078 JM |
293 | if (ie && ie[1] >= MOBILITY_DOMAIN_ID_LEN) |
294 | md = ie + 2; | |
e7846b68 | 295 | wpa_sm_set_ft_params(wpa_s->wpa, ie, ie ? 2 + ie[1] : 0); |
c2a04078 JM |
296 | if (md) { |
297 | /* Prepare for the next transition */ | |
76b7981d | 298 | wpa_ft_prepare_auth_request(wpa_s->wpa, ie); |
c2a04078 JM |
299 | } |
300 | ||
0bf927a0 | 301 | if (md && wpa_key_mgmt_ft(ssid->key_mgmt)) { |
c2a04078 JM |
302 | if (wpa_s->sme.assoc_req_ie_len + 5 < |
303 | sizeof(wpa_s->sme.assoc_req_ie)) { | |
304 | struct rsn_mdie *mdie; | |
305 | u8 *pos = wpa_s->sme.assoc_req_ie + | |
306 | wpa_s->sme.assoc_req_ie_len; | |
307 | *pos++ = WLAN_EID_MOBILITY_DOMAIN; | |
308 | *pos++ = sizeof(*mdie); | |
309 | mdie = (struct rsn_mdie *) pos; | |
310 | os_memcpy(mdie->mobility_domain, md, | |
311 | MOBILITY_DOMAIN_ID_LEN); | |
f4ec630d | 312 | mdie->ft_capab = md[MOBILITY_DOMAIN_ID_LEN]; |
c2a04078 JM |
313 | wpa_s->sme.assoc_req_ie_len += 5; |
314 | } | |
315 | ||
316 | if (wpa_s->sme.ft_used && | |
0d7b4409 JM |
317 | os_memcmp(md, wpa_s->sme.mobility_domain, 2) == 0 && |
318 | wpa_sm_has_ptk(wpa_s->wpa)) { | |
f049052b BG |
319 | wpa_dbg(wpa_s, MSG_DEBUG, "SME: Trying to use FT " |
320 | "over-the-air"); | |
abd9fafa | 321 | params.auth_alg = WPA_AUTH_ALG_FT; |
c2a04078 JM |
322 | params.ie = wpa_s->sme.ft_ies; |
323 | params.ie_len = wpa_s->sme.ft_ies_len; | |
324 | } | |
325 | } | |
326 | #endif /* CONFIG_IEEE80211R */ | |
327 | ||
328 | #ifdef CONFIG_IEEE80211W | |
62d49803 JM |
329 | wpa_s->sme.mfp = ssid->ieee80211w == MGMT_FRAME_PROTECTION_DEFAULT ? |
330 | wpa_s->conf->pmf : ssid->ieee80211w; | |
331 | if (wpa_s->sme.mfp != NO_MGMT_FRAME_PROTECTION) { | |
6fa81a3b | 332 | const u8 *rsn = wpa_bss_get_ie(bss, WLAN_EID_RSN); |
c2a04078 JM |
333 | struct wpa_ie_data _ie; |
334 | if (rsn && wpa_parse_wpa_ie(rsn, 2 + rsn[1], &_ie) == 0 && | |
335 | _ie.capabilities & | |
336 | (WPA_CAPABILITY_MFPC | WPA_CAPABILITY_MFPR)) { | |
f049052b BG |
337 | wpa_dbg(wpa_s, MSG_DEBUG, "SME: Selected AP supports " |
338 | "MFP: require MFP"); | |
c2a04078 JM |
339 | wpa_s->sme.mfp = MGMT_FRAME_PROTECTION_REQUIRED; |
340 | } | |
341 | } | |
342 | #endif /* CONFIG_IEEE80211W */ | |
343 | ||
5f3a6aa0 JM |
344 | #ifdef CONFIG_P2P |
345 | if (wpa_s->global->p2p) { | |
346 | u8 *pos; | |
347 | size_t len; | |
348 | int res; | |
5f3a6aa0 JM |
349 | pos = wpa_s->sme.assoc_req_ie + wpa_s->sme.assoc_req_ie_len; |
350 | len = sizeof(wpa_s->sme.assoc_req_ie) - | |
351 | wpa_s->sme.assoc_req_ie_len; | |
ffad8858 JM |
352 | res = wpas_p2p_assoc_req_ie(wpa_s, bss, pos, len, |
353 | ssid->p2p_group); | |
5f3a6aa0 JM |
354 | if (res >= 0) |
355 | wpa_s->sme.assoc_req_ie_len += res; | |
356 | } | |
357 | #endif /* CONFIG_P2P */ | |
358 | ||
cb418324 | 359 | #ifdef CONFIG_HS20 |
55a2df43 | 360 | if (is_hs20_network(wpa_s, ssid, bss)) { |
cb418324 JM |
361 | struct wpabuf *hs20; |
362 | hs20 = wpabuf_alloc(20); | |
363 | if (hs20) { | |
f9cd147d | 364 | int pps_mo_id = hs20_get_pps_mo_id(wpa_s, ssid); |
745ef184 JM |
365 | size_t len; |
366 | ||
f9cd147d | 367 | wpas_hs20_add_indication(hs20, pps_mo_id); |
745ef184 JM |
368 | len = sizeof(wpa_s->sme.assoc_req_ie) - |
369 | wpa_s->sme.assoc_req_ie_len; | |
370 | if (wpabuf_len(hs20) <= len) { | |
371 | os_memcpy(wpa_s->sme.assoc_req_ie + | |
372 | wpa_s->sme.assoc_req_ie_len, | |
373 | wpabuf_head(hs20), wpabuf_len(hs20)); | |
374 | wpa_s->sme.assoc_req_ie_len += wpabuf_len(hs20); | |
375 | } | |
cb418324 JM |
376 | wpabuf_free(hs20); |
377 | } | |
378 | } | |
379 | #endif /* CONFIG_HS20 */ | |
380 | ||
0bbaa9b9 JM |
381 | ext_capab_len = wpas_build_ext_capab(wpa_s, ext_capab, |
382 | sizeof(ext_capab)); | |
03e47c9c | 383 | if (ext_capab_len > 0) { |
92cbcf91 JM |
384 | u8 *pos = wpa_s->sme.assoc_req_ie; |
385 | if (wpa_s->sme.assoc_req_ie_len > 0 && pos[0] == WLAN_EID_RSN) | |
386 | pos += 2 + pos[1]; | |
03e47c9c | 387 | os_memmove(pos + ext_capab_len, pos, |
92cbcf91 JM |
388 | wpa_s->sme.assoc_req_ie_len - |
389 | (pos - wpa_s->sme.assoc_req_ie)); | |
03e47c9c JM |
390 | wpa_s->sme.assoc_req_ie_len += ext_capab_len; |
391 | os_memcpy(pos, ext_capab, ext_capab_len); | |
92cbcf91 | 392 | } |
92cbcf91 | 393 | |
c10347f2 | 394 | #ifdef CONFIG_SAE |
bc26ac50 JM |
395 | if (params.auth_alg == WPA_AUTH_ALG_SAE && |
396 | pmksa_cache_set_current(wpa_s->wpa, NULL, bss->bssid, ssid, 0) == 0) | |
397 | { | |
398 | wpa_dbg(wpa_s, MSG_DEBUG, | |
399 | "PMKSA cache entry found - try to use PMKSA caching instead of new SAE authentication"); | |
400 | params.auth_alg = WPA_AUTH_ALG_OPEN; | |
401 | wpa_s->sme.sae_pmksa_caching = 1; | |
402 | } | |
403 | ||
c10347f2 JM |
404 | if (params.auth_alg == WPA_AUTH_ALG_SAE) { |
405 | if (start) | |
8e31e955 JM |
406 | resp = sme_auth_build_sae_commit(wpa_s, ssid, |
407 | bss->bssid); | |
c10347f2 JM |
408 | else |
409 | resp = sme_auth_build_sae_confirm(wpa_s); | |
6ac4b15e JM |
410 | if (resp == NULL) { |
411 | wpas_connect_work_done(wpa_s); | |
c10347f2 | 412 | return; |
6ac4b15e | 413 | } |
c10347f2 JM |
414 | params.sae_data = wpabuf_head(resp); |
415 | params.sae_data_len = wpabuf_len(resp); | |
dd43026a | 416 | wpa_s->sme.sae.state = start ? SAE_COMMITTED : SAE_CONFIRMED; |
c10347f2 JM |
417 | } |
418 | #endif /* CONFIG_SAE */ | |
419 | ||
a4cba8f1 | 420 | wpa_supplicant_cancel_sched_scan(wpa_s); |
c2a04078 JM |
421 | wpa_supplicant_cancel_scan(wpa_s); |
422 | ||
f049052b | 423 | wpa_msg(wpa_s, MSG_INFO, "SME: Trying to authenticate with " MACSTR |
c2a04078 JM |
424 | " (SSID='%s' freq=%d MHz)", MAC2STR(params.bssid), |
425 | wpa_ssid_txt(params.ssid, params.ssid_len), params.freq); | |
426 | ||
427 | wpa_clear_keys(wpa_s, bss->bssid); | |
428 | wpa_supplicant_set_state(wpa_s, WPA_AUTHENTICATING); | |
8bac466b | 429 | old_ssid = wpa_s->current_ssid; |
c2a04078 JM |
430 | wpa_s->current_ssid = ssid; |
431 | wpa_supplicant_rsn_supp_set_config(wpa_s, wpa_s->current_ssid); | |
432 | wpa_supplicant_initiate_eapol(wpa_s); | |
8bac466b JM |
433 | if (old_ssid != wpa_s->current_ssid) |
434 | wpas_notify_network_changed(wpa_s); | |
c2a04078 | 435 | |
d0df6437 IP |
436 | #ifdef CONFIG_P2P |
437 | /* | |
438 | * If multi-channel concurrency is not supported, check for any | |
439 | * frequency conflict. In case of any frequency conflict, remove the | |
440 | * least prioritized connection. | |
441 | */ | |
442 | if (wpa_s->num_multichan_concurrent < 2) { | |
443 | int freq, num; | |
444 | num = get_shared_radio_freqs(wpa_s, &freq, 1); | |
445 | if (num > 0 && freq > 0 && freq != params.freq) { | |
446 | wpa_printf(MSG_DEBUG, | |
447 | "Conflicting frequency found (%d != %d)", | |
448 | freq, params.freq); | |
449 | if (wpas_p2p_handle_frequency_conflicts(wpa_s, | |
450 | params.freq, | |
451 | ssid) < 0) { | |
452 | wpas_connection_failed(wpa_s, bss->bssid); | |
453 | wpa_supplicant_mark_disassoc(wpa_s); | |
454 | wpabuf_free(resp); | |
455 | wpas_connect_work_done(wpa_s); | |
456 | return; | |
457 | } | |
458 | } | |
459 | } | |
460 | #endif /* CONFIG_P2P */ | |
461 | ||
62c72d72 | 462 | wpa_s->sme.auth_alg = params.auth_alg; |
c2a04078 | 463 | if (wpa_drv_authenticate(wpa_s, ¶ms) < 0) { |
f049052b | 464 | wpa_msg(wpa_s, MSG_INFO, "SME: Authentication request to the " |
c2a04078 | 465 | "driver failed"); |
ed57c590 | 466 | wpas_connection_failed(wpa_s, bss->bssid); |
1193dc8f | 467 | wpa_supplicant_mark_disassoc(wpa_s); |
c10347f2 | 468 | wpabuf_free(resp); |
6ac4b15e | 469 | wpas_connect_work_done(wpa_s); |
c2a04078 JM |
470 | return; |
471 | } | |
472 | ||
e29853bb BG |
473 | eloop_register_timeout(SME_AUTH_TIMEOUT, 0, sme_auth_timer, wpa_s, |
474 | NULL); | |
c2a04078 JM |
475 | |
476 | /* | |
477 | * Association will be started based on the authentication event from | |
478 | * the driver. | |
479 | */ | |
c10347f2 JM |
480 | |
481 | wpabuf_free(resp); | |
482 | } | |
483 | ||
484 | ||
6ac4b15e JM |
485 | static void sme_auth_start_cb(struct wpa_radio_work *work, int deinit) |
486 | { | |
487 | struct wpa_connect_work *cwork = work->ctx; | |
488 | struct wpa_supplicant *wpa_s = work->wpa_s; | |
489 | ||
490 | if (deinit) { | |
b3253ebb AO |
491 | if (work->started) |
492 | wpa_s->connect_work = NULL; | |
493 | ||
6ac4b15e JM |
494 | wpas_connect_work_free(cwork); |
495 | return; | |
496 | } | |
497 | ||
498 | wpa_s->connect_work = work; | |
499 | ||
a7f5271d JM |
500 | if (cwork->bss_removed || |
501 | !wpas_valid_bss_ssid(wpa_s, cwork->bss, cwork->ssid)) { | |
6ac4b15e JM |
502 | wpa_dbg(wpa_s, MSG_DEBUG, "SME: BSS/SSID entry for authentication not valid anymore - drop connection attempt"); |
503 | wpas_connect_work_done(wpa_s); | |
504 | return; | |
505 | } | |
506 | ||
507 | sme_send_authentication(wpa_s, cwork->bss, cwork->ssid, 1); | |
508 | } | |
509 | ||
510 | ||
c10347f2 JM |
511 | void sme_authenticate(struct wpa_supplicant *wpa_s, |
512 | struct wpa_bss *bss, struct wpa_ssid *ssid) | |
513 | { | |
6ac4b15e JM |
514 | struct wpa_connect_work *cwork; |
515 | ||
516 | if (bss == NULL || ssid == NULL) | |
517 | return; | |
518 | if (wpa_s->connect_work) { | |
519 | wpa_dbg(wpa_s, MSG_DEBUG, "SME: Reject sme_authenticate() call since connect_work exist"); | |
520 | return; | |
521 | } | |
522 | ||
f0e30c84 | 523 | if (radio_work_pending(wpa_s, "sme-connect")) { |
f1c4dbf5 IP |
524 | /* |
525 | * The previous sme-connect work might no longer be valid due to | |
526 | * the fact that the BSS list was updated. In addition, it makes | |
527 | * sense to adhere to the 'newer' decision. | |
528 | */ | |
529 | wpa_dbg(wpa_s, MSG_DEBUG, | |
530 | "SME: Remove previous pending sme-connect"); | |
531 | radio_remove_works(wpa_s, "sme-connect", 0); | |
f0e30c84 JM |
532 | } |
533 | ||
6ac4b15e JM |
534 | cwork = os_zalloc(sizeof(*cwork)); |
535 | if (cwork == NULL) | |
536 | return; | |
537 | cwork->bss = bss; | |
538 | cwork->ssid = ssid; | |
539 | cwork->sme = 1; | |
540 | ||
98efcc41 | 541 | #ifdef CONFIG_SAE |
dd43026a | 542 | wpa_s->sme.sae.state = SAE_NOTHING; |
98efcc41 | 543 | wpa_s->sme.sae.send_confirm = 0; |
18ca7332 | 544 | wpa_s->sme.sae_group_index = 0; |
98efcc41 | 545 | #endif /* CONFIG_SAE */ |
6ac4b15e JM |
546 | |
547 | if (radio_add_work(wpa_s, bss->freq, "sme-connect", 1, | |
548 | sme_auth_start_cb, cwork) < 0) | |
549 | wpas_connect_work_free(cwork); | |
c2a04078 JM |
550 | } |
551 | ||
552 | ||
c10347f2 | 553 | #ifdef CONFIG_SAE |
21af6d15 | 554 | |
c10347f2 JM |
555 | static int sme_sae_auth(struct wpa_supplicant *wpa_s, u16 auth_transaction, |
556 | u16 status_code, const u8 *data, size_t len) | |
557 | { | |
558 | wpa_dbg(wpa_s, MSG_DEBUG, "SME: SAE authentication transaction %u " | |
559 | "status code %u", auth_transaction, status_code); | |
c10347f2 | 560 | |
d136c376 JM |
561 | if (auth_transaction == 1 && |
562 | status_code == WLAN_STATUS_ANTI_CLOGGING_TOKEN_REQ && | |
563 | wpa_s->sme.sae.state == SAE_COMMITTED && | |
564 | wpa_s->current_bss && wpa_s->current_ssid) { | |
565 | wpa_dbg(wpa_s, MSG_DEBUG, "SME: SAE anti-clogging token " | |
566 | "requested"); | |
567 | wpabuf_free(wpa_s->sme.sae_token); | |
568 | wpa_s->sme.sae_token = wpabuf_alloc_copy(data, len); | |
569 | sme_send_authentication(wpa_s, wpa_s->current_bss, | |
570 | wpa_s->current_ssid, 1); | |
571 | return 0; | |
572 | } | |
573 | ||
625f202a JM |
574 | if (auth_transaction == 1 && |
575 | status_code == WLAN_STATUS_FINITE_CYCLIC_GROUP_NOT_SUPPORTED && | |
576 | wpa_s->sme.sae.state == SAE_COMMITTED && | |
577 | wpa_s->current_bss && wpa_s->current_ssid) { | |
578 | wpa_dbg(wpa_s, MSG_DEBUG, "SME: SAE group not supported"); | |
579 | wpa_s->sme.sae_group_index++; | |
580 | if (sme_set_sae_group(wpa_s) < 0) | |
581 | return -1; /* no other groups enabled */ | |
582 | wpa_dbg(wpa_s, MSG_DEBUG, "SME: Try next enabled SAE group"); | |
583 | sme_send_authentication(wpa_s, wpa_s->current_bss, | |
584 | wpa_s->current_ssid, 1); | |
585 | return 0; | |
586 | } | |
587 | ||
c10347f2 JM |
588 | if (status_code != WLAN_STATUS_SUCCESS) |
589 | return -1; | |
590 | ||
591 | if (auth_transaction == 1) { | |
18ca7332 JM |
592 | int *groups = wpa_s->conf->sae_groups; |
593 | ||
c10347f2 JM |
594 | wpa_dbg(wpa_s, MSG_DEBUG, "SME SAE commit"); |
595 | if (wpa_s->current_bss == NULL || | |
596 | wpa_s->current_ssid == NULL) | |
597 | return -1; | |
dd43026a | 598 | if (wpa_s->sme.sae.state != SAE_COMMITTED) |
21af6d15 | 599 | return -1; |
18ca7332 JM |
600 | if (groups && groups[0] <= 0) |
601 | groups = NULL; | |
625f202a | 602 | if (sae_parse_commit(&wpa_s->sme.sae, data, len, NULL, NULL, |
18ca7332 | 603 | groups) != WLAN_STATUS_SUCCESS) |
21af6d15 | 604 | return -1; |
146f6c9a JM |
605 | |
606 | if (sae_process_commit(&wpa_s->sme.sae) < 0) { | |
607 | wpa_printf(MSG_DEBUG, "SAE: Failed to process peer " | |
608 | "commit"); | |
609 | return -1; | |
610 | } | |
611 | ||
d136c376 JM |
612 | wpabuf_free(wpa_s->sme.sae_token); |
613 | wpa_s->sme.sae_token = NULL; | |
c10347f2 JM |
614 | sme_send_authentication(wpa_s, wpa_s->current_bss, |
615 | wpa_s->current_ssid, 0); | |
616 | return 0; | |
617 | } else if (auth_transaction == 2) { | |
618 | wpa_dbg(wpa_s, MSG_DEBUG, "SME SAE confirm"); | |
dd43026a | 619 | if (wpa_s->sme.sae.state != SAE_CONFIRMED) |
21af6d15 | 620 | return -1; |
f2e9818f | 621 | if (sae_check_confirm(&wpa_s->sme.sae, data, len) < 0) |
21af6d15 | 622 | return -1; |
dd43026a | 623 | wpa_s->sme.sae.state = SAE_ACCEPTED; |
b4fd3613 | 624 | sae_clear_temp_data(&wpa_s->sme.sae); |
c10347f2 JM |
625 | return 1; |
626 | } | |
627 | ||
628 | return -1; | |
629 | } | |
630 | #endif /* CONFIG_SAE */ | |
631 | ||
632 | ||
c2a04078 JM |
633 | void sme_event_auth(struct wpa_supplicant *wpa_s, union wpa_event_data *data) |
634 | { | |
c2a04078 JM |
635 | struct wpa_ssid *ssid = wpa_s->current_ssid; |
636 | ||
637 | if (ssid == NULL) { | |
f049052b BG |
638 | wpa_dbg(wpa_s, MSG_DEBUG, "SME: Ignore authentication event " |
639 | "when network is not selected"); | |
c2a04078 JM |
640 | return; |
641 | } | |
642 | ||
643 | if (wpa_s->wpa_state != WPA_AUTHENTICATING) { | |
f049052b BG |
644 | wpa_dbg(wpa_s, MSG_DEBUG, "SME: Ignore authentication event " |
645 | "when not in authenticating state"); | |
c2a04078 JM |
646 | return; |
647 | } | |
648 | ||
649 | if (os_memcmp(wpa_s->pending_bssid, data->auth.peer, ETH_ALEN) != 0) { | |
f049052b BG |
650 | wpa_dbg(wpa_s, MSG_DEBUG, "SME: Ignore authentication with " |
651 | "unexpected peer " MACSTR, | |
652 | MAC2STR(data->auth.peer)); | |
c2a04078 JM |
653 | return; |
654 | } | |
655 | ||
f049052b | 656 | wpa_dbg(wpa_s, MSG_DEBUG, "SME: Authentication response: peer=" MACSTR |
c10347f2 | 657 | " auth_type=%d auth_transaction=%d status_code=%d", |
f049052b | 658 | MAC2STR(data->auth.peer), data->auth.auth_type, |
c10347f2 | 659 | data->auth.auth_transaction, data->auth.status_code); |
c2a04078 JM |
660 | wpa_hexdump(MSG_MSGDUMP, "SME: Authentication response IEs", |
661 | data->auth.ies, data->auth.ies_len); | |
662 | ||
e29853bb BG |
663 | eloop_cancel_timeout(sme_auth_timer, wpa_s, NULL); |
664 | ||
c10347f2 JM |
665 | #ifdef CONFIG_SAE |
666 | if (data->auth.auth_type == WLAN_AUTH_SAE) { | |
21af6d15 JM |
667 | int res; |
668 | res = sme_sae_auth(wpa_s, data->auth.auth_transaction, | |
669 | data->auth.status_code, data->auth.ies, | |
670 | data->auth.ies_len); | |
671 | if (res < 0) { | |
672 | wpas_connection_failed(wpa_s, wpa_s->pending_bssid); | |
673 | wpa_supplicant_set_state(wpa_s, WPA_DISCONNECTED); | |
674 | ||
675 | } | |
676 | if (res != 1) | |
c10347f2 | 677 | return; |
47b55a3e JM |
678 | |
679 | wpa_printf(MSG_DEBUG, "SME: SAE completed - setting PMK for " | |
680 | "4-way handshake"); | |
bc26ac50 JM |
681 | wpa_sm_set_pmk(wpa_s->wpa, wpa_s->sme.sae.pmk, PMK_LEN, |
682 | wpa_s->pending_bssid); | |
c10347f2 JM |
683 | } |
684 | #endif /* CONFIG_SAE */ | |
685 | ||
c2a04078 | 686 | if (data->auth.status_code != WLAN_STATUS_SUCCESS) { |
f049052b BG |
687 | wpa_dbg(wpa_s, MSG_DEBUG, "SME: Authentication failed (status " |
688 | "code %d)", data->auth.status_code); | |
cb1583f6 SO |
689 | |
690 | if (data->auth.status_code != | |
691 | WLAN_STATUS_NOT_SUPPORTED_AUTH_ALG || | |
692 | wpa_s->sme.auth_alg == data->auth.auth_type || | |
7e6646c7 | 693 | wpa_s->current_ssid->auth_alg == WPA_AUTH_ALG_LEAP) { |
0fb337c1 | 694 | wpas_connection_failed(wpa_s, wpa_s->pending_bssid); |
c1c02342 | 695 | wpa_supplicant_set_state(wpa_s, WPA_DISCONNECTED); |
cb1583f6 | 696 | return; |
7e6646c7 | 697 | } |
cb1583f6 | 698 | |
d9504779 JM |
699 | wpas_connect_work_done(wpa_s); |
700 | ||
cb1583f6 SO |
701 | switch (data->auth.auth_type) { |
702 | case WLAN_AUTH_OPEN: | |
703 | wpa_s->current_ssid->auth_alg = WPA_AUTH_ALG_SHARED; | |
704 | ||
f049052b | 705 | wpa_dbg(wpa_s, MSG_DEBUG, "SME: Trying SHARED auth"); |
cb1583f6 SO |
706 | wpa_supplicant_associate(wpa_s, wpa_s->current_bss, |
707 | wpa_s->current_ssid); | |
708 | return; | |
709 | ||
710 | case WLAN_AUTH_SHARED_KEY: | |
711 | wpa_s->current_ssid->auth_alg = WPA_AUTH_ALG_LEAP; | |
712 | ||
f049052b | 713 | wpa_dbg(wpa_s, MSG_DEBUG, "SME: Trying LEAP auth"); |
cb1583f6 SO |
714 | wpa_supplicant_associate(wpa_s, wpa_s->current_bss, |
715 | wpa_s->current_ssid); | |
716 | return; | |
717 | ||
718 | default: | |
719 | return; | |
720 | } | |
c2a04078 JM |
721 | } |
722 | ||
723 | #ifdef CONFIG_IEEE80211R | |
724 | if (data->auth.auth_type == WLAN_AUTH_FT) { | |
725 | union wpa_event_data edata; | |
726 | os_memset(&edata, 0, sizeof(edata)); | |
727 | edata.ft_ies.ies = data->auth.ies; | |
728 | edata.ft_ies.ies_len = data->auth.ies_len; | |
729 | os_memcpy(edata.ft_ies.target_ap, data->auth.peer, ETH_ALEN); | |
730 | wpa_supplicant_event(wpa_s, EVENT_FT_RESPONSE, &edata); | |
731 | } | |
732 | #endif /* CONFIG_IEEE80211R */ | |
733 | ||
71024cb2 JM |
734 | sme_associate(wpa_s, ssid->mode, data->auth.peer, |
735 | data->auth.auth_type); | |
736 | } | |
737 | ||
738 | ||
739 | void sme_associate(struct wpa_supplicant *wpa_s, enum wpas_mode mode, | |
740 | const u8 *bssid, u16 auth_type) | |
741 | { | |
742 | struct wpa_driver_associate_params params; | |
d9a27b04 | 743 | struct ieee802_11_elems elems; |
80e8a5ee BG |
744 | #ifdef CONFIG_HT_OVERRIDES |
745 | struct ieee80211_ht_capabilities htcaps; | |
746 | struct ieee80211_ht_capabilities htcaps_mask; | |
747 | #endif /* CONFIG_HT_OVERRIDES */ | |
e9ee8dc3 JB |
748 | #ifdef CONFIG_VHT_OVERRIDES |
749 | struct ieee80211_vht_capabilities vhtcaps; | |
750 | struct ieee80211_vht_capabilities vhtcaps_mask; | |
751 | #endif /* CONFIG_VHT_OVERRIDES */ | |
71024cb2 | 752 | |
c2a04078 | 753 | os_memset(¶ms, 0, sizeof(params)); |
71024cb2 | 754 | params.bssid = bssid; |
c2a04078 JM |
755 | params.ssid = wpa_s->sme.ssid; |
756 | params.ssid_len = wpa_s->sme.ssid_len; | |
4ec68377 | 757 | params.freq.freq = wpa_s->sme.freq; |
1f6c0ab8 BS |
758 | params.bg_scan_period = wpa_s->current_ssid ? |
759 | wpa_s->current_ssid->bg_scan_period : -1; | |
c2a04078 JM |
760 | params.wpa_ie = wpa_s->sme.assoc_req_ie_len ? |
761 | wpa_s->sme.assoc_req_ie : NULL; | |
762 | params.wpa_ie_len = wpa_s->sme.assoc_req_ie_len; | |
4848a38d JM |
763 | params.pairwise_suite = wpa_s->pairwise_cipher; |
764 | params.group_suite = wpa_s->group_cipher; | |
163f801e JM |
765 | params.key_mgmt_suite = wpa_s->key_mgmt; |
766 | params.wpa_proto = wpa_s->wpa_proto; | |
80e8a5ee BG |
767 | #ifdef CONFIG_HT_OVERRIDES |
768 | os_memset(&htcaps, 0, sizeof(htcaps)); | |
769 | os_memset(&htcaps_mask, 0, sizeof(htcaps_mask)); | |
770 | params.htcaps = (u8 *) &htcaps; | |
771 | params.htcaps_mask = (u8 *) &htcaps_mask; | |
772 | wpa_supplicant_apply_ht_overrides(wpa_s, wpa_s->current_ssid, ¶ms); | |
773 | #endif /* CONFIG_HT_OVERRIDES */ | |
e9ee8dc3 JB |
774 | #ifdef CONFIG_VHT_OVERRIDES |
775 | os_memset(&vhtcaps, 0, sizeof(vhtcaps)); | |
776 | os_memset(&vhtcaps_mask, 0, sizeof(vhtcaps_mask)); | |
777 | params.vhtcaps = &vhtcaps; | |
778 | params.vhtcaps_mask = &vhtcaps_mask; | |
779 | wpa_supplicant_apply_vht_overrides(wpa_s, wpa_s->current_ssid, ¶ms); | |
780 | #endif /* CONFIG_VHT_OVERRIDES */ | |
c2a04078 | 781 | #ifdef CONFIG_IEEE80211R |
71024cb2 | 782 | if (auth_type == WLAN_AUTH_FT && wpa_s->sme.ft_ies) { |
c2a04078 JM |
783 | params.wpa_ie = wpa_s->sme.ft_ies; |
784 | params.wpa_ie_len = wpa_s->sme.ft_ies_len; | |
785 | } | |
786 | #endif /* CONFIG_IEEE80211R */ | |
71024cb2 | 787 | params.mode = mode; |
c2a04078 | 788 | params.mgmt_frame_protection = wpa_s->sme.mfp; |
62fa124c JM |
789 | if (wpa_s->sme.prev_bssid_set) |
790 | params.prev_bssid = wpa_s->sme.prev_bssid; | |
c2a04078 JM |
791 | |
792 | wpa_msg(wpa_s, MSG_INFO, "Trying to associate with " MACSTR | |
793 | " (SSID='%s' freq=%d MHz)", MAC2STR(params.bssid), | |
794 | params.ssid ? wpa_ssid_txt(params.ssid, params.ssid_len) : "", | |
4ec68377 | 795 | params.freq.freq); |
c2a04078 JM |
796 | |
797 | wpa_supplicant_set_state(wpa_s, WPA_ASSOCIATING); | |
798 | ||
9efc3f2a JM |
799 | if (params.wpa_ie == NULL || |
800 | ieee802_11_parse_elems(params.wpa_ie, params.wpa_ie_len, &elems, 0) | |
d9a27b04 | 801 | < 0) { |
f049052b | 802 | wpa_dbg(wpa_s, MSG_DEBUG, "SME: Could not parse own IEs?!"); |
d9a27b04 JM |
803 | os_memset(&elems, 0, sizeof(elems)); |
804 | } | |
64fa840a JM |
805 | if (elems.rsn_ie) { |
806 | params.wpa_proto = WPA_PROTO_RSN; | |
d9a27b04 JM |
807 | wpa_sm_set_assoc_wpa_ie(wpa_s->wpa, elems.rsn_ie - 2, |
808 | elems.rsn_ie_len + 2); | |
64fa840a JM |
809 | } else if (elems.wpa_ie) { |
810 | params.wpa_proto = WPA_PROTO_WPA; | |
d9a27b04 JM |
811 | wpa_sm_set_assoc_wpa_ie(wpa_s->wpa, elems.wpa_ie - 2, |
812 | elems.wpa_ie_len + 2); | |
df0f01d9 JM |
813 | } else if (elems.osen) { |
814 | params.wpa_proto = WPA_PROTO_OSEN; | |
815 | wpa_sm_set_assoc_wpa_ie(wpa_s->wpa, elems.osen - 2, | |
816 | elems.osen_len + 2); | |
64fa840a | 817 | } else |
d9a27b04 | 818 | wpa_sm_set_assoc_wpa_ie(wpa_s->wpa, NULL, 0); |
ffad8858 | 819 | if (wpa_s->current_ssid && wpa_s->current_ssid->p2p_group) |
6e3f4b89 | 820 | params.p2p = 1; |
d9a27b04 | 821 | |
eea2fd9e JM |
822 | if (wpa_s->parent->set_sta_uapsd) |
823 | params.uapsd = wpa_s->parent->sta_uapsd; | |
824 | else | |
825 | params.uapsd = -1; | |
826 | ||
c2a04078 | 827 | if (wpa_drv_associate(wpa_s, ¶ms) < 0) { |
f049052b BG |
828 | wpa_msg(wpa_s, MSG_INFO, "SME: Association request to the " |
829 | "driver failed"); | |
e5ad96b7 | 830 | wpas_connection_failed(wpa_s, wpa_s->pending_bssid); |
c1c02342 | 831 | wpa_supplicant_set_state(wpa_s, WPA_DISCONNECTED); |
e5ad96b7 | 832 | os_memset(wpa_s->pending_bssid, 0, ETH_ALEN); |
c2a04078 JM |
833 | return; |
834 | } | |
835 | ||
e29853bb BG |
836 | eloop_register_timeout(SME_ASSOC_TIMEOUT, 0, sme_assoc_timer, wpa_s, |
837 | NULL); | |
c2a04078 JM |
838 | } |
839 | ||
840 | ||
841 | int sme_update_ft_ies(struct wpa_supplicant *wpa_s, const u8 *md, | |
842 | const u8 *ies, size_t ies_len) | |
843 | { | |
844 | if (md == NULL || ies == NULL) { | |
f049052b | 845 | wpa_dbg(wpa_s, MSG_DEBUG, "SME: Remove mobility domain"); |
c2a04078 JM |
846 | os_free(wpa_s->sme.ft_ies); |
847 | wpa_s->sme.ft_ies = NULL; | |
848 | wpa_s->sme.ft_ies_len = 0; | |
849 | wpa_s->sme.ft_used = 0; | |
850 | return 0; | |
851 | } | |
852 | ||
853 | os_memcpy(wpa_s->sme.mobility_domain, md, MOBILITY_DOMAIN_ID_LEN); | |
854 | wpa_hexdump(MSG_DEBUG, "SME: FT IEs", ies, ies_len); | |
855 | os_free(wpa_s->sme.ft_ies); | |
856 | wpa_s->sme.ft_ies = os_malloc(ies_len); | |
857 | if (wpa_s->sme.ft_ies == NULL) | |
858 | return -1; | |
859 | os_memcpy(wpa_s->sme.ft_ies, ies, ies_len); | |
860 | wpa_s->sme.ft_ies_len = ies_len; | |
861 | return 0; | |
862 | } | |
efa46078 JM |
863 | |
864 | ||
e29853bb | 865 | static void sme_deauth(struct wpa_supplicant *wpa_s) |
efa46078 | 866 | { |
8bac466b JM |
867 | int bssid_changed; |
868 | ||
8bac466b | 869 | bssid_changed = !is_zero_ether_addr(wpa_s->bssid); |
76d11d3f | 870 | |
76d11d3f JM |
871 | if (wpa_drv_deauthenticate(wpa_s, wpa_s->pending_bssid, |
872 | WLAN_REASON_DEAUTH_LEAVING) < 0) { | |
f049052b BG |
873 | wpa_msg(wpa_s, MSG_INFO, "SME: Deauth request to the driver " |
874 | "failed"); | |
76d11d3f | 875 | } |
62fa124c | 876 | wpa_s->sme.prev_bssid_set = 0; |
76d11d3f | 877 | |
0fb337c1 | 878 | wpas_connection_failed(wpa_s, wpa_s->pending_bssid); |
76d11d3f | 879 | wpa_supplicant_set_state(wpa_s, WPA_DISCONNECTED); |
efa46078 JM |
880 | os_memset(wpa_s->bssid, 0, ETH_ALEN); |
881 | os_memset(wpa_s->pending_bssid, 0, ETH_ALEN); | |
8bac466b JM |
882 | if (bssid_changed) |
883 | wpas_notify_bssid_changed(wpa_s); | |
efa46078 | 884 | } |
da1fb17c JM |
885 | |
886 | ||
e29853bb BG |
887 | void sme_event_assoc_reject(struct wpa_supplicant *wpa_s, |
888 | union wpa_event_data *data) | |
889 | { | |
890 | wpa_dbg(wpa_s, MSG_DEBUG, "SME: Association with " MACSTR " failed: " | |
891 | "status code %d", MAC2STR(wpa_s->pending_bssid), | |
892 | data->assoc_reject.status_code); | |
893 | ||
894 | eloop_cancel_timeout(sme_assoc_timer, wpa_s, NULL); | |
895 | ||
bc26ac50 JM |
896 | #ifdef CONFIG_SAE |
897 | if (wpa_s->sme.sae_pmksa_caching && wpa_s->current_ssid && | |
898 | wpa_key_mgmt_sae(wpa_s->current_ssid->key_mgmt)) { | |
899 | wpa_dbg(wpa_s, MSG_DEBUG, | |
900 | "PMKSA caching attempt rejected - drop PMKSA cache entry and fall back to SAE authentication"); | |
901 | wpa_sm_aborted_cached(wpa_s->wpa); | |
902 | wpa_sm_pmksa_cache_flush(wpa_s->wpa, wpa_s->current_ssid); | |
903 | if (wpa_s->current_bss) { | |
904 | struct wpa_bss *bss = wpa_s->current_bss; | |
905 | struct wpa_ssid *ssid = wpa_s->current_ssid; | |
906 | ||
907 | wpa_drv_deauthenticate(wpa_s, wpa_s->pending_bssid, | |
908 | WLAN_REASON_DEAUTH_LEAVING); | |
909 | wpas_connect_work_done(wpa_s); | |
910 | wpa_supplicant_mark_disassoc(wpa_s); | |
911 | wpa_supplicant_connect(wpa_s, bss, ssid); | |
912 | return; | |
913 | } | |
914 | } | |
915 | #endif /* CONFIG_SAE */ | |
916 | ||
e29853bb BG |
917 | /* |
918 | * For now, unconditionally terminate the previous authentication. In | |
919 | * theory, this should not be needed, but mac80211 gets quite confused | |
920 | * if the authentication is left pending.. Some roaming cases might | |
921 | * benefit from using the previous authentication, so this could be | |
922 | * optimized in the future. | |
923 | */ | |
924 | sme_deauth(wpa_s); | |
925 | } | |
926 | ||
927 | ||
da1fb17c JM |
928 | void sme_event_auth_timed_out(struct wpa_supplicant *wpa_s, |
929 | union wpa_event_data *data) | |
930 | { | |
f049052b | 931 | wpa_dbg(wpa_s, MSG_DEBUG, "SME: Authentication timed out"); |
0fb337c1 | 932 | wpas_connection_failed(wpa_s, wpa_s->pending_bssid); |
1193dc8f | 933 | wpa_supplicant_mark_disassoc(wpa_s); |
da1fb17c JM |
934 | } |
935 | ||
936 | ||
937 | void sme_event_assoc_timed_out(struct wpa_supplicant *wpa_s, | |
938 | union wpa_event_data *data) | |
939 | { | |
f049052b | 940 | wpa_dbg(wpa_s, MSG_DEBUG, "SME: Association timed out"); |
0fb337c1 | 941 | wpas_connection_failed(wpa_s, wpa_s->pending_bssid); |
da1fb17c | 942 | wpa_supplicant_mark_disassoc(wpa_s); |
da1fb17c | 943 | } |
a84ed99e JM |
944 | |
945 | ||
946 | void sme_event_disassoc(struct wpa_supplicant *wpa_s, | |
d7df0fa7 | 947 | struct disassoc_info *info) |
a84ed99e | 948 | { |
f049052b | 949 | wpa_dbg(wpa_s, MSG_DEBUG, "SME: Disassociation event received"); |
17fbb751 | 950 | if (wpa_s->sme.prev_bssid_set) { |
a84ed99e JM |
951 | /* |
952 | * cfg80211/mac80211 can get into somewhat confused state if | |
953 | * the AP only disassociates us and leaves us in authenticated | |
954 | * state. For now, force the state to be cleared to avoid | |
955 | * confusing errors if we try to associate with the AP again. | |
956 | */ | |
f049052b BG |
957 | wpa_dbg(wpa_s, MSG_DEBUG, "SME: Deauthenticate to clear " |
958 | "driver state"); | |
7e26053a | 959 | wpa_drv_deauthenticate(wpa_s, wpa_s->sme.prev_bssid, |
a84ed99e JM |
960 | WLAN_REASON_DEAUTH_LEAVING); |
961 | } | |
962 | } | |
7d878ca7 JM |
963 | |
964 | ||
e29853bb BG |
965 | static void sme_auth_timer(void *eloop_ctx, void *timeout_ctx) |
966 | { | |
967 | struct wpa_supplicant *wpa_s = eloop_ctx; | |
968 | if (wpa_s->wpa_state == WPA_AUTHENTICATING) { | |
969 | wpa_msg(wpa_s, MSG_DEBUG, "SME: Authentication timeout"); | |
970 | sme_deauth(wpa_s); | |
971 | } | |
972 | } | |
973 | ||
974 | ||
975 | static void sme_assoc_timer(void *eloop_ctx, void *timeout_ctx) | |
976 | { | |
977 | struct wpa_supplicant *wpa_s = eloop_ctx; | |
978 | if (wpa_s->wpa_state == WPA_ASSOCIATING) { | |
979 | wpa_msg(wpa_s, MSG_DEBUG, "SME: Association timeout"); | |
980 | sme_deauth(wpa_s); | |
981 | } | |
982 | } | |
983 | ||
984 | ||
985 | void sme_state_changed(struct wpa_supplicant *wpa_s) | |
986 | { | |
987 | /* Make sure timers are cleaned up appropriately. */ | |
988 | if (wpa_s->wpa_state != WPA_ASSOCIATING) | |
989 | eloop_cancel_timeout(sme_assoc_timer, wpa_s, NULL); | |
990 | if (wpa_s->wpa_state != WPA_AUTHENTICATING) | |
991 | eloop_cancel_timeout(sme_auth_timer, wpa_s, NULL); | |
992 | } | |
993 | ||
994 | ||
995 | void sme_disassoc_while_authenticating(struct wpa_supplicant *wpa_s, | |
996 | const u8 *prev_pending_bssid) | |
997 | { | |
998 | /* | |
999 | * mac80211-workaround to force deauth on failed auth cmd, | |
1000 | * requires us to remain in authenticating state to allow the | |
1001 | * second authentication attempt to be continued properly. | |
1002 | */ | |
1003 | wpa_dbg(wpa_s, MSG_DEBUG, "SME: Allow pending authentication " | |
1004 | "to proceed after disconnection event"); | |
1005 | wpa_supplicant_set_state(wpa_s, WPA_AUTHENTICATING); | |
1006 | os_memcpy(wpa_s->pending_bssid, prev_pending_bssid, ETH_ALEN); | |
1007 | ||
1008 | /* | |
1009 | * Re-arm authentication timer in case auth fails for whatever reason. | |
1010 | */ | |
1011 | eloop_cancel_timeout(sme_auth_timer, wpa_s, NULL); | |
1012 | eloop_register_timeout(SME_AUTH_TIMEOUT, 0, sme_auth_timer, wpa_s, | |
1013 | NULL); | |
1014 | } | |
1015 | ||
1016 | ||
1017 | void sme_deinit(struct wpa_supplicant *wpa_s) | |
1018 | { | |
1019 | os_free(wpa_s->sme.ft_ies); | |
1020 | wpa_s->sme.ft_ies = NULL; | |
1021 | wpa_s->sme.ft_ies_len = 0; | |
1022 | #ifdef CONFIG_IEEE80211W | |
1023 | sme_stop_sa_query(wpa_s); | |
1024 | #endif /* CONFIG_IEEE80211W */ | |
d136c376 JM |
1025 | #ifdef CONFIG_SAE |
1026 | wpabuf_free(wpa_s->sme.sae_token); | |
1027 | wpa_s->sme.sae_token = NULL; | |
a46d72d7 | 1028 | sae_clear_data(&wpa_s->sme.sae); |
d136c376 | 1029 | #endif /* CONFIG_SAE */ |
e29853bb BG |
1030 | |
1031 | eloop_cancel_timeout(sme_assoc_timer, wpa_s, NULL); | |
1032 | eloop_cancel_timeout(sme_auth_timer, wpa_s, NULL); | |
c3701c66 RM |
1033 | eloop_cancel_timeout(sme_obss_scan_timeout, wpa_s, NULL); |
1034 | } | |
1035 | ||
1036 | ||
1037 | static void sme_send_2040_bss_coex(struct wpa_supplicant *wpa_s, | |
1038 | const u8 *chan_list, u8 num_channels, | |
1039 | u8 num_intol) | |
1040 | { | |
1041 | struct ieee80211_2040_bss_coex_ie *bc_ie; | |
1042 | struct ieee80211_2040_intol_chan_report *ic_report; | |
1043 | struct wpabuf *buf; | |
1044 | ||
31ded52e JM |
1045 | wpa_printf(MSG_DEBUG, "SME: Send 20/40 BSS Coexistence to " MACSTR |
1046 | " (num_channels=%u num_intol=%u)", | |
1047 | MAC2STR(wpa_s->bssid), num_channels, num_intol); | |
1048 | wpa_hexdump(MSG_DEBUG, "SME: 20/40 BSS Intolerant Channels", | |
1049 | chan_list, num_channels); | |
c3701c66 RM |
1050 | |
1051 | buf = wpabuf_alloc(2 + /* action.category + action_code */ | |
1052 | sizeof(struct ieee80211_2040_bss_coex_ie) + | |
1053 | sizeof(struct ieee80211_2040_intol_chan_report) + | |
1054 | num_channels); | |
1055 | if (buf == NULL) | |
1056 | return; | |
1057 | ||
1058 | wpabuf_put_u8(buf, WLAN_ACTION_PUBLIC); | |
1059 | wpabuf_put_u8(buf, WLAN_PA_20_40_BSS_COEX); | |
1060 | ||
1061 | bc_ie = wpabuf_put(buf, sizeof(*bc_ie)); | |
1062 | bc_ie->element_id = WLAN_EID_20_40_BSS_COEXISTENCE; | |
1063 | bc_ie->length = 1; | |
1064 | if (num_intol) | |
1065 | bc_ie->coex_param |= WLAN_20_40_BSS_COEX_20MHZ_WIDTH_REQ; | |
1066 | ||
1067 | if (num_channels > 0) { | |
1068 | ic_report = wpabuf_put(buf, sizeof(*ic_report)); | |
1069 | ic_report->element_id = WLAN_EID_20_40_BSS_INTOLERANT; | |
1070 | ic_report->length = num_channels + 1; | |
1071 | ic_report->op_class = 0; | |
1072 | os_memcpy(wpabuf_put(buf, num_channels), chan_list, | |
1073 | num_channels); | |
1074 | } | |
1075 | ||
1076 | if (wpa_drv_send_action(wpa_s, wpa_s->assoc_freq, 0, wpa_s->bssid, | |
1077 | wpa_s->own_addr, wpa_s->bssid, | |
1078 | wpabuf_head(buf), wpabuf_len(buf), 0) < 0) { | |
1079 | wpa_msg(wpa_s, MSG_INFO, | |
1080 | "SME: Failed to send 20/40 BSS Coexistence frame"); | |
1081 | } | |
1082 | ||
1083 | wpabuf_free(buf); | |
1084 | } | |
1085 | ||
1086 | ||
c3701c66 RM |
1087 | int sme_proc_obss_scan(struct wpa_supplicant *wpa_s) |
1088 | { | |
1089 | struct wpa_bss *bss; | |
1090 | const u8 *ie; | |
1091 | u16 ht_cap; | |
1092 | u8 chan_list[P2P_MAX_CHANNELS], channel; | |
1093 | u8 num_channels = 0, num_intol = 0, i; | |
1094 | ||
1095 | if (!wpa_s->sme.sched_obss_scan) | |
1096 | return 0; | |
1097 | ||
1098 | wpa_s->sme.sched_obss_scan = 0; | |
1099 | if (!wpa_s->current_bss || wpa_s->wpa_state != WPA_COMPLETED) | |
1100 | return 1; | |
1101 | ||
1102 | /* | |
1103 | * Check whether AP uses regulatory triplet or channel triplet in | |
1104 | * country info. Right now the operating class of the BSS channel | |
1105 | * width trigger event is "unknown" (IEEE Std 802.11-2012 10.15.12), | |
1106 | * based on the assumption that operating class triplet is not used in | |
1107 | * beacon frame. If the First Channel Number/Operating Extension | |
1108 | * Identifier octet has a positive integer value of 201 or greater, | |
1109 | * then its operating class triplet. | |
1110 | * | |
1111 | * TODO: If Supported Operating Classes element is present in beacon | |
1112 | * frame, have to lookup operating class in Annex E and fill them in | |
1113 | * 2040 coex frame. | |
1114 | */ | |
1115 | ie = wpa_bss_get_ie(wpa_s->current_bss, WLAN_EID_COUNTRY); | |
1116 | if (ie && (ie[1] >= 6) && (ie[5] >= 201)) | |
1117 | return 1; | |
1118 | ||
1119 | os_memset(chan_list, 0, sizeof(chan_list)); | |
1120 | ||
1121 | dl_list_for_each(bss, &wpa_s->bss, struct wpa_bss, list) { | |
1122 | /* Skip other band bss */ | |
e864c0ae JM |
1123 | enum hostapd_hw_mode mode; |
1124 | mode = ieee80211_freq_to_chan(bss->freq, &channel); | |
1125 | if (mode != HOSTAPD_MODE_IEEE80211G && | |
1126 | mode != HOSTAPD_MODE_IEEE80211B) | |
c3701c66 RM |
1127 | continue; |
1128 | ||
1129 | ie = wpa_bss_get_ie(bss, WLAN_EID_HT_CAP); | |
1130 | ht_cap = (ie && (ie[1] == 26)) ? WPA_GET_LE16(ie + 2) : 0; | |
31ded52e JM |
1131 | wpa_printf(MSG_DEBUG, "SME OBSS scan BSS " MACSTR |
1132 | " freq=%u chan=%u ht_cap=0x%x", | |
1133 | MAC2STR(bss->bssid), bss->freq, channel, ht_cap); | |
c3701c66 RM |
1134 | |
1135 | if (!ht_cap || (ht_cap & HT_CAP_INFO_40MHZ_INTOLERANT)) { | |
7f8eb34d JM |
1136 | if (ht_cap & HT_CAP_INFO_40MHZ_INTOLERANT) |
1137 | num_intol++; | |
1138 | ||
c3701c66 RM |
1139 | /* Check whether the channel is already considered */ |
1140 | for (i = 0; i < num_channels; i++) { | |
1141 | if (channel == chan_list[i]) | |
1142 | break; | |
1143 | } | |
1144 | if (i != num_channels) | |
1145 | continue; | |
1146 | ||
c3701c66 RM |
1147 | chan_list[num_channels++] = channel; |
1148 | } | |
1149 | } | |
1150 | ||
1151 | sme_send_2040_bss_coex(wpa_s, chan_list, num_channels, num_intol); | |
1152 | return 1; | |
1153 | } | |
1154 | ||
1155 | ||
6434ad09 JM |
1156 | static struct hostapd_hw_modes * get_mode(struct hostapd_hw_modes *modes, |
1157 | u16 num_modes, | |
1158 | enum hostapd_hw_mode mode) | |
1159 | { | |
1160 | u16 i; | |
1161 | ||
1162 | for (i = 0; i < num_modes; i++) { | |
1163 | if (modes[i].mode == mode) | |
1164 | return &modes[i]; | |
1165 | } | |
1166 | ||
1167 | return NULL; | |
1168 | } | |
1169 | ||
1170 | ||
1171 | static void wpa_setband_scan_freqs_list(struct wpa_supplicant *wpa_s, | |
1172 | enum hostapd_hw_mode band, | |
1173 | struct wpa_driver_scan_params *params) | |
1174 | { | |
1175 | /* Include only supported channels for the specified band */ | |
1176 | struct hostapd_hw_modes *mode; | |
1177 | int count, i; | |
1178 | ||
1179 | mode = get_mode(wpa_s->hw.modes, wpa_s->hw.num_modes, band); | |
1180 | if (mode == NULL) { | |
1181 | /* No channels supported in this band - use empty list */ | |
1182 | params->freqs = os_zalloc(sizeof(int)); | |
1183 | return; | |
1184 | } | |
1185 | ||
f9884c09 | 1186 | params->freqs = os_calloc(mode->num_channels + 1, sizeof(int)); |
6434ad09 JM |
1187 | if (params->freqs == NULL) |
1188 | return; | |
1189 | for (count = 0, i = 0; i < mode->num_channels; i++) { | |
1190 | if (mode->channels[i].flag & HOSTAPD_CHAN_DISABLED) | |
1191 | continue; | |
1192 | params->freqs[count++] = mode->channels[i].freq; | |
1193 | } | |
1194 | } | |
1195 | ||
1196 | ||
c3701c66 RM |
1197 | static void sme_obss_scan_timeout(void *eloop_ctx, void *timeout_ctx) |
1198 | { | |
1199 | struct wpa_supplicant *wpa_s = eloop_ctx; | |
1200 | struct wpa_driver_scan_params params; | |
1201 | ||
1202 | if (!wpa_s->current_bss) { | |
1203 | wpa_printf(MSG_DEBUG, "SME OBSS: Ignore scan request"); | |
1204 | return; | |
1205 | } | |
1206 | ||
1207 | os_memset(¶ms, 0, sizeof(params)); | |
6434ad09 | 1208 | wpa_setband_scan_freqs_list(wpa_s, HOSTAPD_MODE_IEEE80211G, ¶ms); |
57a8f8af | 1209 | params.low_priority = 1; |
c3701c66 RM |
1210 | wpa_printf(MSG_DEBUG, "SME OBSS: Request an OBSS scan"); |
1211 | ||
1212 | if (wpa_supplicant_trigger_scan(wpa_s, ¶ms)) | |
1213 | wpa_printf(MSG_DEBUG, "SME OBSS: Failed to trigger scan"); | |
1214 | else | |
1215 | wpa_s->sme.sched_obss_scan = 1; | |
6434ad09 | 1216 | os_free(params.freqs); |
c3701c66 RM |
1217 | |
1218 | eloop_register_timeout(wpa_s->sme.obss_scan_int, 0, | |
1219 | sme_obss_scan_timeout, wpa_s, NULL); | |
1220 | } | |
1221 | ||
1222 | ||
1223 | void sme_sched_obss_scan(struct wpa_supplicant *wpa_s, int enable) | |
1224 | { | |
1225 | const u8 *ie; | |
1226 | struct wpa_bss *bss = wpa_s->current_bss; | |
1227 | struct wpa_ssid *ssid = wpa_s->current_ssid; | |
b6871ebb AN |
1228 | struct hostapd_hw_modes *hw_mode = NULL; |
1229 | int i; | |
c3701c66 RM |
1230 | |
1231 | eloop_cancel_timeout(sme_obss_scan_timeout, wpa_s, NULL); | |
1232 | wpa_s->sme.sched_obss_scan = 0; | |
1233 | if (!enable) | |
1234 | return; | |
1235 | ||
368b1957 AK |
1236 | /* |
1237 | * Schedule OBSS scan if driver is using station SME in wpa_supplicant | |
1238 | * or it expects OBSS scan to be performed by wpa_supplicant. | |
1239 | */ | |
1240 | if (!((wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME) || | |
1241 | (wpa_s->drv_flags & WPA_DRIVER_FLAGS_OBSS_SCAN)) || | |
1242 | ssid == NULL || ssid->mode != IEEE80211_MODE_INFRA) | |
1243 | return; | |
c3701c66 | 1244 | |
b6871ebb AN |
1245 | if (!wpa_s->hw.modes) |
1246 | return; | |
1247 | ||
1248 | /* only HT caps in 11g mode are relevant */ | |
1249 | for (i = 0; i < wpa_s->hw.num_modes; i++) { | |
1250 | hw_mode = &wpa_s->hw.modes[i]; | |
1251 | if (hw_mode->mode == HOSTAPD_MODE_IEEE80211G) | |
1252 | break; | |
1253 | } | |
1254 | ||
1255 | /* Driver does not support HT40 for 11g or doesn't have 11g. */ | |
1256 | if (i == wpa_s->hw.num_modes || !hw_mode || | |
1257 | !(hw_mode->ht_capab & HT_CAP_INFO_SUPP_CHANNEL_WIDTH_SET)) | |
1258 | return; | |
c3701c66 RM |
1259 | |
1260 | if (bss == NULL || bss->freq < 2400 || bss->freq > 2500) | |
1261 | return; /* Not associated on 2.4 GHz band */ | |
1262 | ||
1263 | /* Check whether AP supports HT40 */ | |
1264 | ie = wpa_bss_get_ie(wpa_s->current_bss, WLAN_EID_HT_CAP); | |
1265 | if (!ie || ie[1] < 2 || | |
1266 | !(WPA_GET_LE16(ie + 2) & HT_CAP_INFO_SUPP_CHANNEL_WIDTH_SET)) | |
1267 | return; /* AP does not support HT40 */ | |
1268 | ||
1269 | ie = wpa_bss_get_ie(wpa_s->current_bss, | |
1270 | WLAN_EID_OVERLAPPING_BSS_SCAN_PARAMS); | |
1271 | if (!ie || ie[1] < 14) | |
1272 | return; /* AP does not request OBSS scans */ | |
1273 | ||
1274 | wpa_s->sme.obss_scan_int = WPA_GET_LE16(ie + 6); | |
1275 | if (wpa_s->sme.obss_scan_int < 10) { | |
1276 | wpa_printf(MSG_DEBUG, "SME: Invalid OBSS Scan Interval %u " | |
1277 | "replaced with the minimum 10 sec", | |
1278 | wpa_s->sme.obss_scan_int); | |
1279 | wpa_s->sme.obss_scan_int = 10; | |
1280 | } | |
1281 | wpa_printf(MSG_DEBUG, "SME: OBSS Scan Interval %u sec", | |
1282 | wpa_s->sme.obss_scan_int); | |
1283 | eloop_register_timeout(wpa_s->sme.obss_scan_int, 0, | |
1284 | sme_obss_scan_timeout, wpa_s, NULL); | |
e29853bb BG |
1285 | } |
1286 | ||
1287 | ||
7d878ca7 JM |
1288 | #ifdef CONFIG_IEEE80211W |
1289 | ||
1290 | static const unsigned int sa_query_max_timeout = 1000; | |
1291 | static const unsigned int sa_query_retry_timeout = 201; | |
1292 | ||
1293 | static int sme_check_sa_query_timeout(struct wpa_supplicant *wpa_s) | |
1294 | { | |
1295 | u32 tu; | |
46b8d4c0 JB |
1296 | struct os_reltime now, passed; |
1297 | os_get_reltime(&now); | |
1298 | os_reltime_sub(&now, &wpa_s->sme.sa_query_start, &passed); | |
7d878ca7 JM |
1299 | tu = (passed.sec * 1000000 + passed.usec) / 1024; |
1300 | if (sa_query_max_timeout < tu) { | |
f049052b | 1301 | wpa_dbg(wpa_s, MSG_DEBUG, "SME: SA Query timed out"); |
7d878ca7 JM |
1302 | sme_stop_sa_query(wpa_s); |
1303 | wpa_supplicant_deauthenticate( | |
1304 | wpa_s, WLAN_REASON_PREV_AUTH_NOT_VALID); | |
1305 | return 1; | |
1306 | } | |
1307 | ||
1308 | return 0; | |
1309 | } | |
1310 | ||
1311 | ||
1312 | static void sme_send_sa_query_req(struct wpa_supplicant *wpa_s, | |
1313 | const u8 *trans_id) | |
1314 | { | |
1315 | u8 req[2 + WLAN_SA_QUERY_TR_ID_LEN]; | |
f049052b BG |
1316 | wpa_dbg(wpa_s, MSG_DEBUG, "SME: Sending SA Query Request to " |
1317 | MACSTR, MAC2STR(wpa_s->bssid)); | |
7d878ca7 JM |
1318 | wpa_hexdump(MSG_DEBUG, "SME: SA Query Transaction ID", |
1319 | trans_id, WLAN_SA_QUERY_TR_ID_LEN); | |
1320 | req[0] = WLAN_ACTION_SA_QUERY; | |
1321 | req[1] = WLAN_SA_QUERY_REQUEST; | |
1322 | os_memcpy(req + 2, trans_id, WLAN_SA_QUERY_TR_ID_LEN); | |
190b9062 | 1323 | if (wpa_drv_send_action(wpa_s, wpa_s->assoc_freq, 0, wpa_s->bssid, |
7d878ca7 | 1324 | wpa_s->own_addr, wpa_s->bssid, |
b106173a | 1325 | req, sizeof(req), 0) < 0) |
f049052b BG |
1326 | wpa_msg(wpa_s, MSG_INFO, "SME: Failed to send SA Query " |
1327 | "Request"); | |
7d878ca7 JM |
1328 | } |
1329 | ||
1330 | ||
1331 | static void sme_sa_query_timer(void *eloop_ctx, void *timeout_ctx) | |
1332 | { | |
1333 | struct wpa_supplicant *wpa_s = eloop_ctx; | |
1334 | unsigned int timeout, sec, usec; | |
1335 | u8 *trans_id, *nbuf; | |
1336 | ||
1337 | if (wpa_s->sme.sa_query_count > 0 && | |
1338 | sme_check_sa_query_timeout(wpa_s)) | |
1339 | return; | |
1340 | ||
067ffa26 JM |
1341 | nbuf = os_realloc_array(wpa_s->sme.sa_query_trans_id, |
1342 | wpa_s->sme.sa_query_count + 1, | |
1343 | WLAN_SA_QUERY_TR_ID_LEN); | |
7d878ca7 JM |
1344 | if (nbuf == NULL) |
1345 | return; | |
1346 | if (wpa_s->sme.sa_query_count == 0) { | |
1347 | /* Starting a new SA Query procedure */ | |
46b8d4c0 | 1348 | os_get_reltime(&wpa_s->sme.sa_query_start); |
7d878ca7 JM |
1349 | } |
1350 | trans_id = nbuf + wpa_s->sme.sa_query_count * WLAN_SA_QUERY_TR_ID_LEN; | |
1351 | wpa_s->sme.sa_query_trans_id = nbuf; | |
1352 | wpa_s->sme.sa_query_count++; | |
1353 | ||
cb5ef952 JM |
1354 | if (os_get_random(trans_id, WLAN_SA_QUERY_TR_ID_LEN) < 0) { |
1355 | wpa_printf(MSG_DEBUG, "Could not generate SA Query ID"); | |
1356 | return; | |
1357 | } | |
7d878ca7 JM |
1358 | |
1359 | timeout = sa_query_retry_timeout; | |
1360 | sec = ((timeout / 1000) * 1024) / 1000; | |
1361 | usec = (timeout % 1000) * 1024; | |
1362 | eloop_register_timeout(sec, usec, sme_sa_query_timer, wpa_s, NULL); | |
1363 | ||
f049052b BG |
1364 | wpa_dbg(wpa_s, MSG_DEBUG, "SME: Association SA Query attempt %d", |
1365 | wpa_s->sme.sa_query_count); | |
7d878ca7 JM |
1366 | |
1367 | sme_send_sa_query_req(wpa_s, trans_id); | |
1368 | } | |
1369 | ||
1370 | ||
1371 | static void sme_start_sa_query(struct wpa_supplicant *wpa_s) | |
1372 | { | |
1373 | sme_sa_query_timer(wpa_s, NULL); | |
1374 | } | |
1375 | ||
1376 | ||
19df9b07 | 1377 | static void sme_stop_sa_query(struct wpa_supplicant *wpa_s) |
7d878ca7 JM |
1378 | { |
1379 | eloop_cancel_timeout(sme_sa_query_timer, wpa_s, NULL); | |
1380 | os_free(wpa_s->sme.sa_query_trans_id); | |
1381 | wpa_s->sme.sa_query_trans_id = NULL; | |
1382 | wpa_s->sme.sa_query_count = 0; | |
1383 | } | |
1384 | ||
1385 | ||
1386 | void sme_event_unprot_disconnect(struct wpa_supplicant *wpa_s, const u8 *sa, | |
1387 | const u8 *da, u16 reason_code) | |
1388 | { | |
1389 | struct wpa_ssid *ssid; | |
3302b7c2 | 1390 | struct os_reltime now; |
7d878ca7 | 1391 | |
7d878ca7 JM |
1392 | if (wpa_s->wpa_state != WPA_COMPLETED) |
1393 | return; | |
1394 | ssid = wpa_s->current_ssid; | |
62d49803 JM |
1395 | if (ssid == NULL || |
1396 | (ssid->ieee80211w == MGMT_FRAME_PROTECTION_DEFAULT ? | |
1397 | wpa_s->conf->pmf : ssid->ieee80211w) == NO_MGMT_FRAME_PROTECTION) | |
7d878ca7 JM |
1398 | return; |
1399 | if (os_memcmp(sa, wpa_s->bssid, ETH_ALEN) != 0) | |
1400 | return; | |
1401 | if (reason_code != WLAN_REASON_CLASS2_FRAME_FROM_NONAUTH_STA && | |
1402 | reason_code != WLAN_REASON_CLASS3_FRAME_FROM_NONASSOC_STA) | |
1403 | return; | |
1404 | if (wpa_s->sme.sa_query_count > 0) | |
1405 | return; | |
1406 | ||
3302b7c2 JM |
1407 | os_get_reltime(&now); |
1408 | if (wpa_s->sme.last_unprot_disconnect.sec && | |
1409 | !os_reltime_expired(&now, &wpa_s->sme.last_unprot_disconnect, 10)) | |
1410 | return; /* limit SA Query procedure frequency */ | |
1411 | wpa_s->sme.last_unprot_disconnect = now; | |
1412 | ||
f049052b BG |
1413 | wpa_dbg(wpa_s, MSG_DEBUG, "SME: Unprotected disconnect dropped - " |
1414 | "possible AP/STA state mismatch - trigger SA Query"); | |
7d878ca7 JM |
1415 | sme_start_sa_query(wpa_s); |
1416 | } | |
1417 | ||
1418 | ||
1419 | void sme_sa_query_rx(struct wpa_supplicant *wpa_s, const u8 *sa, | |
1420 | const u8 *data, size_t len) | |
1421 | { | |
1422 | int i; | |
1423 | ||
1424 | if (wpa_s->sme.sa_query_trans_id == NULL || | |
1425 | len < 1 + WLAN_SA_QUERY_TR_ID_LEN || | |
1426 | data[0] != WLAN_SA_QUERY_RESPONSE) | |
1427 | return; | |
f049052b BG |
1428 | wpa_dbg(wpa_s, MSG_DEBUG, "SME: Received SA Query response from " |
1429 | MACSTR " (trans_id %02x%02x)", MAC2STR(sa), data[1], data[2]); | |
7d878ca7 JM |
1430 | |
1431 | if (os_memcmp(sa, wpa_s->bssid, ETH_ALEN) != 0) | |
1432 | return; | |
1433 | ||
1434 | for (i = 0; i < wpa_s->sme.sa_query_count; i++) { | |
1435 | if (os_memcmp(wpa_s->sme.sa_query_trans_id + | |
1436 | i * WLAN_SA_QUERY_TR_ID_LEN, | |
1437 | data + 1, WLAN_SA_QUERY_TR_ID_LEN) == 0) | |
1438 | break; | |
1439 | } | |
1440 | ||
1441 | if (i >= wpa_s->sme.sa_query_count) { | |
f049052b BG |
1442 | wpa_dbg(wpa_s, MSG_DEBUG, "SME: No matching SA Query " |
1443 | "transaction identifier found"); | |
7d878ca7 JM |
1444 | return; |
1445 | } | |
1446 | ||
f049052b BG |
1447 | wpa_dbg(wpa_s, MSG_DEBUG, "SME: Reply to pending SA Query received " |
1448 | "from " MACSTR, MAC2STR(sa)); | |
7d878ca7 JM |
1449 | sme_stop_sa_query(wpa_s); |
1450 | } | |
1451 | ||
1452 | #endif /* CONFIG_IEEE80211W */ |