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Commit | Line | Data |
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c2a04078 JM |
1 | /* |
2 | * wpa_supplicant - SME | |
8e31e955 | 3 | * Copyright (c) 2009-2012, 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 | ||
8e31e955 JM |
45 | static struct wpabuf * sme_auth_build_sae_commit(struct wpa_supplicant *wpa_s, |
46 | struct wpa_ssid *ssid, | |
47 | const u8 *bssid) | |
c10347f2 JM |
48 | { |
49 | struct wpabuf *buf; | |
50 | ||
8e31e955 JM |
51 | if (ssid->passphrase == NULL) { |
52 | wpa_printf(MSG_DEBUG, "SAE: No password available"); | |
53 | return NULL; | |
54 | } | |
55 | ||
56 | if (sae_prepare_commit(wpa_s->own_addr, bssid, | |
57 | (u8 *) ssid->passphrase, | |
58 | os_strlen(ssid->passphrase), | |
59 | &wpa_s->sme.sae) < 0) { | |
60 | wpa_printf(MSG_DEBUG, "SAE: Could not pick PWE"); | |
61 | return NULL; | |
62 | } | |
63 | ||
64 | buf = wpabuf_alloc(4 + SAE_COMMIT_MAX_LEN); | |
c10347f2 JM |
65 | if (buf == NULL) |
66 | return NULL; | |
67 | ||
68 | wpabuf_put_le16(buf, 1); /* Transaction seq# */ | |
69 | wpabuf_put_le16(buf, WLAN_STATUS_SUCCESS); | |
8e31e955 | 70 | sae_write_commit(&wpa_s->sme.sae, buf); |
c10347f2 JM |
71 | |
72 | return buf; | |
73 | } | |
74 | ||
75 | ||
76 | static struct wpabuf * sme_auth_build_sae_confirm(struct wpa_supplicant *wpa_s) | |
77 | { | |
78 | struct wpabuf *buf; | |
79 | ||
21af6d15 | 80 | buf = wpabuf_alloc(4 + 2); |
c10347f2 JM |
81 | if (buf == NULL) |
82 | return NULL; | |
83 | ||
84 | wpabuf_put_le16(buf, 2); /* Transaction seq# */ | |
85 | wpabuf_put_le16(buf, WLAN_STATUS_SUCCESS); | |
98efcc41 JM |
86 | wpabuf_put_le16(buf, wpa_s->sme.sae.send_confirm); |
87 | wpa_s->sme.sae.send_confirm++; | |
21af6d15 | 88 | /* TODO: Confirm */ |
c10347f2 JM |
89 | |
90 | return buf; | |
91 | } | |
92 | ||
93 | #endif /* CONFIG_SAE */ | |
94 | ||
95 | ||
215ae884 JM |
96 | static void sme_send_authentication(struct wpa_supplicant *wpa_s, |
97 | struct wpa_bss *bss, struct wpa_ssid *ssid, | |
98 | int start) | |
c2a04078 JM |
99 | { |
100 | struct wpa_driver_auth_params params; | |
8bac466b | 101 | struct wpa_ssid *old_ssid; |
fdbe50ed | 102 | #ifdef CONFIG_IEEE80211R |
c2a04078 | 103 | const u8 *ie; |
fdbe50ed | 104 | #endif /* CONFIG_IEEE80211R */ |
c2a04078 JM |
105 | #ifdef CONFIG_IEEE80211R |
106 | const u8 *md = NULL; | |
107 | #endif /* CONFIG_IEEE80211R */ | |
8bac466b | 108 | int i, bssid_changed; |
c10347f2 | 109 | struct wpabuf *resp = NULL; |
03e47c9c JM |
110 | u8 ext_capab[10]; |
111 | int ext_capab_len; | |
c2a04078 JM |
112 | |
113 | if (bss == NULL) { | |
f049052b BG |
114 | wpa_msg(wpa_s, MSG_ERROR, "SME: No scan result available for " |
115 | "the network"); | |
c2a04078 JM |
116 | return; |
117 | } | |
118 | ||
8f770587 JM |
119 | wpa_s->current_bss = bss; |
120 | ||
c2a04078 JM |
121 | os_memset(¶ms, 0, sizeof(params)); |
122 | wpa_s->reassociate = 0; | |
123 | ||
124 | params.freq = bss->freq; | |
125 | params.bssid = bss->bssid; | |
6fa81a3b JM |
126 | params.ssid = bss->ssid; |
127 | params.ssid_len = bss->ssid_len; | |
2f4f73b1 | 128 | params.p2p = ssid->p2p_group; |
c2a04078 | 129 | |
62fa124c JM |
130 | if (wpa_s->sme.ssid_len != params.ssid_len || |
131 | os_memcmp(wpa_s->sme.ssid, params.ssid, params.ssid_len) != 0) | |
132 | wpa_s->sme.prev_bssid_set = 0; | |
133 | ||
c2a04078 JM |
134 | wpa_s->sme.freq = params.freq; |
135 | os_memcpy(wpa_s->sme.ssid, params.ssid, params.ssid_len); | |
136 | wpa_s->sme.ssid_len = params.ssid_len; | |
137 | ||
abd9fafa | 138 | params.auth_alg = WPA_AUTH_ALG_OPEN; |
c2a04078 JM |
139 | #ifdef IEEE8021X_EAPOL |
140 | if (ssid->key_mgmt & WPA_KEY_MGMT_IEEE8021X_NO_WPA) { | |
141 | if (ssid->leap) { | |
142 | if (ssid->non_leap == 0) | |
abd9fafa | 143 | params.auth_alg = WPA_AUTH_ALG_LEAP; |
c2a04078 | 144 | else |
abd9fafa | 145 | params.auth_alg |= WPA_AUTH_ALG_LEAP; |
c2a04078 JM |
146 | } |
147 | } | |
148 | #endif /* IEEE8021X_EAPOL */ | |
f049052b BG |
149 | wpa_dbg(wpa_s, MSG_DEBUG, "Automatic auth_alg selection: 0x%x", |
150 | params.auth_alg); | |
c2a04078 | 151 | if (ssid->auth_alg) { |
abd9fafa | 152 | params.auth_alg = ssid->auth_alg; |
f049052b BG |
153 | wpa_dbg(wpa_s, MSG_DEBUG, "Overriding auth_alg selection: " |
154 | "0x%x", params.auth_alg); | |
c2a04078 | 155 | } |
c10347f2 JM |
156 | #ifdef CONFIG_SAE |
157 | if (wpa_key_mgmt_sae(ssid->key_mgmt)) { | |
158 | const u8 *rsn; | |
159 | struct wpa_ie_data ied; | |
160 | ||
161 | rsn = wpa_bss_get_ie(bss, WLAN_EID_RSN); | |
162 | if (rsn && | |
163 | wpa_parse_wpa_ie(rsn, 2 + rsn[1], &ied) == 0) { | |
164 | if (wpa_key_mgmt_sae(ied.key_mgmt)) { | |
165 | wpa_dbg(wpa_s, MSG_DEBUG, "Using SAE auth_alg"); | |
166 | params.auth_alg = WPA_AUTH_ALG_SAE; | |
167 | } | |
168 | } | |
169 | } | |
170 | #endif /* CONFIG_SAE */ | |
c2a04078 | 171 | |
a0b2f99b JM |
172 | for (i = 0; i < NUM_WEP_KEYS; i++) { |
173 | if (ssid->wep_key_len[i]) | |
174 | params.wep_key[i] = ssid->wep_key[i]; | |
175 | params.wep_key_len[i] = ssid->wep_key_len[i]; | |
176 | } | |
177 | params.wep_tx_keyidx = ssid->wep_tx_keyidx; | |
178 | ||
8bac466b | 179 | bssid_changed = !is_zero_ether_addr(wpa_s->bssid); |
c2a04078 JM |
180 | os_memset(wpa_s->bssid, 0, ETH_ALEN); |
181 | os_memcpy(wpa_s->pending_bssid, bss->bssid, ETH_ALEN); | |
8bac466b JM |
182 | if (bssid_changed) |
183 | wpas_notify_bssid_changed(wpa_s); | |
c2a04078 | 184 | |
f337f0e9 JM |
185 | if ((wpa_bss_get_vendor_ie(bss, WPA_IE_VENDOR_TYPE) || |
186 | wpa_bss_get_ie(bss, WLAN_EID_RSN)) && | |
0bf927a0 | 187 | wpa_key_mgmt_wpa(ssid->key_mgmt)) { |
c2a04078 | 188 | int try_opportunistic; |
6e202021 JM |
189 | try_opportunistic = (ssid->proactive_key_caching < 0 ? |
190 | wpa_s->conf->okc : | |
191 | ssid->proactive_key_caching) && | |
c2a04078 JM |
192 | (ssid->proto & WPA_PROTO_RSN); |
193 | if (pmksa_cache_set_current(wpa_s->wpa, NULL, bss->bssid, | |
194 | wpa_s->current_ssid, | |
195 | try_opportunistic) == 0) | |
196 | eapol_sm_notify_pmkid_attempt(wpa_s->eapol, 1); | |
197 | wpa_s->sme.assoc_req_ie_len = sizeof(wpa_s->sme.assoc_req_ie); | |
198 | if (wpa_supplicant_set_suites(wpa_s, bss, ssid, | |
199 | wpa_s->sme.assoc_req_ie, | |
200 | &wpa_s->sme.assoc_req_ie_len)) { | |
f049052b BG |
201 | wpa_msg(wpa_s, MSG_WARNING, "SME: Failed to set WPA " |
202 | "key management and encryption suites"); | |
c2a04078 JM |
203 | return; |
204 | } | |
a3f7e518 JM |
205 | } else if ((ssid->key_mgmt & WPA_KEY_MGMT_IEEE8021X_NO_WPA) && |
206 | wpa_key_mgmt_wpa_ieee8021x(ssid->key_mgmt)) { | |
207 | /* | |
208 | * Both WPA and non-WPA IEEE 802.1X enabled in configuration - | |
209 | * use non-WPA since the scan results did not indicate that the | |
210 | * AP is using WPA or WPA2. | |
211 | */ | |
212 | wpa_supplicant_set_non_wpa_policy(wpa_s, ssid); | |
213 | wpa_s->sme.assoc_req_ie_len = 0; | |
0bf927a0 | 214 | } else if (wpa_key_mgmt_wpa_any(ssid->key_mgmt)) { |
c2a04078 JM |
215 | wpa_s->sme.assoc_req_ie_len = sizeof(wpa_s->sme.assoc_req_ie); |
216 | if (wpa_supplicant_set_suites(wpa_s, NULL, ssid, | |
217 | wpa_s->sme.assoc_req_ie, | |
218 | &wpa_s->sme.assoc_req_ie_len)) { | |
f049052b BG |
219 | wpa_msg(wpa_s, MSG_WARNING, "SME: Failed to set WPA " |
220 | "key management and encryption suites (no " | |
221 | "scan results)"); | |
c2a04078 JM |
222 | return; |
223 | } | |
224 | #ifdef CONFIG_WPS | |
225 | } else if (ssid->key_mgmt & WPA_KEY_MGMT_WPS) { | |
226 | struct wpabuf *wps_ie; | |
227 | wps_ie = wps_build_assoc_req_ie(wpas_wps_get_req_type(ssid)); | |
228 | if (wps_ie && wpabuf_len(wps_ie) <= | |
229 | sizeof(wpa_s->sme.assoc_req_ie)) { | |
230 | wpa_s->sme.assoc_req_ie_len = wpabuf_len(wps_ie); | |
231 | os_memcpy(wpa_s->sme.assoc_req_ie, wpabuf_head(wps_ie), | |
232 | wpa_s->sme.assoc_req_ie_len); | |
233 | } else | |
234 | wpa_s->sme.assoc_req_ie_len = 0; | |
235 | wpabuf_free(wps_ie); | |
236 | wpa_supplicant_set_non_wpa_policy(wpa_s, ssid); | |
237 | #endif /* CONFIG_WPS */ | |
238 | } else { | |
239 | wpa_supplicant_set_non_wpa_policy(wpa_s, ssid); | |
240 | wpa_s->sme.assoc_req_ie_len = 0; | |
241 | } | |
242 | ||
243 | #ifdef CONFIG_IEEE80211R | |
6fa81a3b | 244 | ie = wpa_bss_get_ie(bss, WLAN_EID_MOBILITY_DOMAIN); |
c2a04078 JM |
245 | if (ie && ie[1] >= MOBILITY_DOMAIN_ID_LEN) |
246 | md = ie + 2; | |
e7846b68 | 247 | wpa_sm_set_ft_params(wpa_s->wpa, ie, ie ? 2 + ie[1] : 0); |
c2a04078 JM |
248 | if (md) { |
249 | /* Prepare for the next transition */ | |
76b7981d | 250 | wpa_ft_prepare_auth_request(wpa_s->wpa, ie); |
c2a04078 JM |
251 | } |
252 | ||
0bf927a0 | 253 | if (md && wpa_key_mgmt_ft(ssid->key_mgmt)) { |
c2a04078 JM |
254 | if (wpa_s->sme.assoc_req_ie_len + 5 < |
255 | sizeof(wpa_s->sme.assoc_req_ie)) { | |
256 | struct rsn_mdie *mdie; | |
257 | u8 *pos = wpa_s->sme.assoc_req_ie + | |
258 | wpa_s->sme.assoc_req_ie_len; | |
259 | *pos++ = WLAN_EID_MOBILITY_DOMAIN; | |
260 | *pos++ = sizeof(*mdie); | |
261 | mdie = (struct rsn_mdie *) pos; | |
262 | os_memcpy(mdie->mobility_domain, md, | |
263 | MOBILITY_DOMAIN_ID_LEN); | |
f4ec630d | 264 | mdie->ft_capab = md[MOBILITY_DOMAIN_ID_LEN]; |
c2a04078 JM |
265 | wpa_s->sme.assoc_req_ie_len += 5; |
266 | } | |
267 | ||
268 | if (wpa_s->sme.ft_used && | |
0d7b4409 JM |
269 | os_memcmp(md, wpa_s->sme.mobility_domain, 2) == 0 && |
270 | wpa_sm_has_ptk(wpa_s->wpa)) { | |
f049052b BG |
271 | wpa_dbg(wpa_s, MSG_DEBUG, "SME: Trying to use FT " |
272 | "over-the-air"); | |
abd9fafa | 273 | params.auth_alg = WPA_AUTH_ALG_FT; |
c2a04078 JM |
274 | params.ie = wpa_s->sme.ft_ies; |
275 | params.ie_len = wpa_s->sme.ft_ies_len; | |
276 | } | |
277 | } | |
278 | #endif /* CONFIG_IEEE80211R */ | |
279 | ||
280 | #ifdef CONFIG_IEEE80211W | |
62d49803 JM |
281 | wpa_s->sme.mfp = ssid->ieee80211w == MGMT_FRAME_PROTECTION_DEFAULT ? |
282 | wpa_s->conf->pmf : ssid->ieee80211w; | |
283 | if (wpa_s->sme.mfp != NO_MGMT_FRAME_PROTECTION) { | |
6fa81a3b | 284 | const u8 *rsn = wpa_bss_get_ie(bss, WLAN_EID_RSN); |
c2a04078 JM |
285 | struct wpa_ie_data _ie; |
286 | if (rsn && wpa_parse_wpa_ie(rsn, 2 + rsn[1], &_ie) == 0 && | |
287 | _ie.capabilities & | |
288 | (WPA_CAPABILITY_MFPC | WPA_CAPABILITY_MFPR)) { | |
f049052b BG |
289 | wpa_dbg(wpa_s, MSG_DEBUG, "SME: Selected AP supports " |
290 | "MFP: require MFP"); | |
c2a04078 JM |
291 | wpa_s->sme.mfp = MGMT_FRAME_PROTECTION_REQUIRED; |
292 | } | |
293 | } | |
294 | #endif /* CONFIG_IEEE80211W */ | |
295 | ||
5f3a6aa0 JM |
296 | #ifdef CONFIG_P2P |
297 | if (wpa_s->global->p2p) { | |
298 | u8 *pos; | |
299 | size_t len; | |
300 | int res; | |
5f3a6aa0 JM |
301 | pos = wpa_s->sme.assoc_req_ie + wpa_s->sme.assoc_req_ie_len; |
302 | len = sizeof(wpa_s->sme.assoc_req_ie) - | |
303 | wpa_s->sme.assoc_req_ie_len; | |
ffad8858 JM |
304 | res = wpas_p2p_assoc_req_ie(wpa_s, bss, pos, len, |
305 | ssid->p2p_group); | |
5f3a6aa0 JM |
306 | if (res >= 0) |
307 | wpa_s->sme.assoc_req_ie_len += res; | |
308 | } | |
309 | #endif /* CONFIG_P2P */ | |
310 | ||
cb418324 JM |
311 | #ifdef CONFIG_HS20 |
312 | if (wpa_s->conf->hs20) { | |
313 | struct wpabuf *hs20; | |
314 | hs20 = wpabuf_alloc(20); | |
315 | if (hs20) { | |
316 | wpas_hs20_add_indication(hs20); | |
317 | os_memcpy(wpa_s->sme.assoc_req_ie + | |
318 | wpa_s->sme.assoc_req_ie_len, | |
319 | wpabuf_head(hs20), wpabuf_len(hs20)); | |
320 | wpa_s->sme.assoc_req_ie_len += wpabuf_len(hs20); | |
321 | wpabuf_free(hs20); | |
322 | } | |
323 | } | |
324 | #endif /* CONFIG_HS20 */ | |
325 | ||
03e47c9c JM |
326 | ext_capab_len = wpas_build_ext_capab(wpa_s, ext_capab); |
327 | if (ext_capab_len > 0) { | |
92cbcf91 JM |
328 | u8 *pos = wpa_s->sme.assoc_req_ie; |
329 | if (wpa_s->sme.assoc_req_ie_len > 0 && pos[0] == WLAN_EID_RSN) | |
330 | pos += 2 + pos[1]; | |
03e47c9c | 331 | os_memmove(pos + ext_capab_len, pos, |
92cbcf91 JM |
332 | wpa_s->sme.assoc_req_ie_len - |
333 | (pos - wpa_s->sme.assoc_req_ie)); | |
03e47c9c JM |
334 | wpa_s->sme.assoc_req_ie_len += ext_capab_len; |
335 | os_memcpy(pos, ext_capab, ext_capab_len); | |
92cbcf91 | 336 | } |
92cbcf91 | 337 | |
c10347f2 JM |
338 | #ifdef CONFIG_SAE |
339 | if (params.auth_alg == WPA_AUTH_ALG_SAE) { | |
340 | if (start) | |
8e31e955 JM |
341 | resp = sme_auth_build_sae_commit(wpa_s, ssid, |
342 | bss->bssid); | |
c10347f2 JM |
343 | else |
344 | resp = sme_auth_build_sae_confirm(wpa_s); | |
345 | if (resp == NULL) | |
346 | return; | |
347 | params.sae_data = wpabuf_head(resp); | |
348 | params.sae_data_len = wpabuf_len(resp); | |
98efcc41 | 349 | wpa_s->sme.sae.state = start ? SAE_COMMIT : SAE_CONFIRM; |
c10347f2 JM |
350 | } |
351 | #endif /* CONFIG_SAE */ | |
352 | ||
a4cba8f1 | 353 | wpa_supplicant_cancel_sched_scan(wpa_s); |
c2a04078 JM |
354 | wpa_supplicant_cancel_scan(wpa_s); |
355 | ||
f049052b | 356 | wpa_msg(wpa_s, MSG_INFO, "SME: Trying to authenticate with " MACSTR |
c2a04078 JM |
357 | " (SSID='%s' freq=%d MHz)", MAC2STR(params.bssid), |
358 | wpa_ssid_txt(params.ssid, params.ssid_len), params.freq); | |
359 | ||
360 | wpa_clear_keys(wpa_s, bss->bssid); | |
361 | wpa_supplicant_set_state(wpa_s, WPA_AUTHENTICATING); | |
8bac466b | 362 | old_ssid = wpa_s->current_ssid; |
c2a04078 JM |
363 | wpa_s->current_ssid = ssid; |
364 | wpa_supplicant_rsn_supp_set_config(wpa_s, wpa_s->current_ssid); | |
365 | wpa_supplicant_initiate_eapol(wpa_s); | |
8bac466b JM |
366 | if (old_ssid != wpa_s->current_ssid) |
367 | wpas_notify_network_changed(wpa_s); | |
c2a04078 | 368 | |
62c72d72 | 369 | wpa_s->sme.auth_alg = params.auth_alg; |
c2a04078 | 370 | if (wpa_drv_authenticate(wpa_s, ¶ms) < 0) { |
f049052b | 371 | wpa_msg(wpa_s, MSG_INFO, "SME: Authentication request to the " |
c2a04078 | 372 | "driver failed"); |
ed57c590 | 373 | wpas_connection_failed(wpa_s, bss->bssid); |
1193dc8f | 374 | wpa_supplicant_mark_disassoc(wpa_s); |
c10347f2 | 375 | wpabuf_free(resp); |
c2a04078 JM |
376 | return; |
377 | } | |
378 | ||
e29853bb BG |
379 | eloop_register_timeout(SME_AUTH_TIMEOUT, 0, sme_auth_timer, wpa_s, |
380 | NULL); | |
c2a04078 JM |
381 | |
382 | /* | |
383 | * Association will be started based on the authentication event from | |
384 | * the driver. | |
385 | */ | |
c10347f2 JM |
386 | |
387 | wpabuf_free(resp); | |
388 | } | |
389 | ||
390 | ||
391 | void sme_authenticate(struct wpa_supplicant *wpa_s, | |
392 | struct wpa_bss *bss, struct wpa_ssid *ssid) | |
393 | { | |
98efcc41 JM |
394 | #ifdef CONFIG_SAE |
395 | wpa_s->sme.sae.state = SAE_INIT; | |
396 | wpa_s->sme.sae.send_confirm = 0; | |
397 | #endif /* CONFIG_SAE */ | |
c10347f2 | 398 | sme_send_authentication(wpa_s, bss, ssid, 1); |
c2a04078 JM |
399 | } |
400 | ||
401 | ||
c10347f2 | 402 | #ifdef CONFIG_SAE |
21af6d15 JM |
403 | |
404 | static int sme_sae_process_commit(struct wpa_supplicant *wpa_s, const u8 *data, | |
405 | size_t len) | |
406 | { | |
407 | /* Check Finite Cyclic Group */ | |
408 | if (len < 2) | |
409 | return -1; | |
410 | if (WPA_GET_LE16(data) != 19) { | |
411 | wpa_printf(MSG_DEBUG, "SAE: Unsupported Finite Cyclic Group %u", | |
412 | WPA_GET_LE16(data)); | |
413 | return -1; | |
414 | } | |
415 | ||
416 | /* TODO */ | |
417 | ||
418 | return 0; | |
419 | } | |
420 | ||
421 | ||
422 | static int sme_sae_process_confirm(struct wpa_supplicant *wpa_s, const u8 *data, | |
423 | size_t len) | |
424 | { | |
425 | u16 rc; | |
426 | ||
427 | if (len < 2) | |
428 | return -1; | |
429 | rc = WPA_GET_LE16(data); | |
430 | wpa_printf(MSG_DEBUG, "SAE: peer-send-confirm %u", rc); | |
431 | ||
432 | /* TODO */ | |
433 | return 0; | |
434 | } | |
435 | ||
436 | ||
c10347f2 JM |
437 | static int sme_sae_auth(struct wpa_supplicant *wpa_s, u16 auth_transaction, |
438 | u16 status_code, const u8 *data, size_t len) | |
439 | { | |
440 | wpa_dbg(wpa_s, MSG_DEBUG, "SME: SAE authentication transaction %u " | |
441 | "status code %u", auth_transaction, status_code); | |
442 | wpa_hexdump(MSG_DEBUG, "SME: SAE fields", data, len); | |
443 | ||
444 | if (status_code != WLAN_STATUS_SUCCESS) | |
445 | return -1; | |
446 | ||
447 | if (auth_transaction == 1) { | |
448 | wpa_dbg(wpa_s, MSG_DEBUG, "SME SAE commit"); | |
449 | if (wpa_s->current_bss == NULL || | |
450 | wpa_s->current_ssid == NULL) | |
451 | return -1; | |
98efcc41 | 452 | if (wpa_s->sme.sae.state != SAE_COMMIT) |
21af6d15 JM |
453 | return -1; |
454 | if (sme_sae_process_commit(wpa_s, data, len) < 0) | |
455 | return -1; | |
c10347f2 JM |
456 | sme_send_authentication(wpa_s, wpa_s->current_bss, |
457 | wpa_s->current_ssid, 0); | |
458 | return 0; | |
459 | } else if (auth_transaction == 2) { | |
460 | wpa_dbg(wpa_s, MSG_DEBUG, "SME SAE confirm"); | |
98efcc41 | 461 | if (wpa_s->sme.sae.state != SAE_CONFIRM) |
21af6d15 JM |
462 | return -1; |
463 | if (sme_sae_process_confirm(wpa_s, data, len) < 0) | |
464 | return -1; | |
c10347f2 JM |
465 | return 1; |
466 | } | |
467 | ||
468 | return -1; | |
469 | } | |
470 | #endif /* CONFIG_SAE */ | |
471 | ||
472 | ||
c2a04078 JM |
473 | void sme_event_auth(struct wpa_supplicant *wpa_s, union wpa_event_data *data) |
474 | { | |
c2a04078 JM |
475 | struct wpa_ssid *ssid = wpa_s->current_ssid; |
476 | ||
477 | if (ssid == NULL) { | |
f049052b BG |
478 | wpa_dbg(wpa_s, MSG_DEBUG, "SME: Ignore authentication event " |
479 | "when network is not selected"); | |
c2a04078 JM |
480 | return; |
481 | } | |
482 | ||
483 | if (wpa_s->wpa_state != WPA_AUTHENTICATING) { | |
f049052b BG |
484 | wpa_dbg(wpa_s, MSG_DEBUG, "SME: Ignore authentication event " |
485 | "when not in authenticating state"); | |
c2a04078 JM |
486 | return; |
487 | } | |
488 | ||
489 | if (os_memcmp(wpa_s->pending_bssid, data->auth.peer, ETH_ALEN) != 0) { | |
f049052b BG |
490 | wpa_dbg(wpa_s, MSG_DEBUG, "SME: Ignore authentication with " |
491 | "unexpected peer " MACSTR, | |
492 | MAC2STR(data->auth.peer)); | |
c2a04078 JM |
493 | return; |
494 | } | |
495 | ||
f049052b | 496 | wpa_dbg(wpa_s, MSG_DEBUG, "SME: Authentication response: peer=" MACSTR |
c10347f2 | 497 | " auth_type=%d auth_transaction=%d status_code=%d", |
f049052b | 498 | MAC2STR(data->auth.peer), data->auth.auth_type, |
c10347f2 | 499 | data->auth.auth_transaction, data->auth.status_code); |
c2a04078 JM |
500 | wpa_hexdump(MSG_MSGDUMP, "SME: Authentication response IEs", |
501 | data->auth.ies, data->auth.ies_len); | |
502 | ||
e29853bb BG |
503 | eloop_cancel_timeout(sme_auth_timer, wpa_s, NULL); |
504 | ||
c10347f2 JM |
505 | #ifdef CONFIG_SAE |
506 | if (data->auth.auth_type == WLAN_AUTH_SAE) { | |
21af6d15 JM |
507 | int res; |
508 | res = sme_sae_auth(wpa_s, data->auth.auth_transaction, | |
509 | data->auth.status_code, data->auth.ies, | |
510 | data->auth.ies_len); | |
511 | if (res < 0) { | |
512 | wpas_connection_failed(wpa_s, wpa_s->pending_bssid); | |
513 | wpa_supplicant_set_state(wpa_s, WPA_DISCONNECTED); | |
514 | ||
515 | } | |
516 | if (res != 1) | |
c10347f2 JM |
517 | return; |
518 | } | |
519 | #endif /* CONFIG_SAE */ | |
520 | ||
c2a04078 | 521 | if (data->auth.status_code != WLAN_STATUS_SUCCESS) { |
f049052b BG |
522 | wpa_dbg(wpa_s, MSG_DEBUG, "SME: Authentication failed (status " |
523 | "code %d)", data->auth.status_code); | |
cb1583f6 SO |
524 | |
525 | if (data->auth.status_code != | |
526 | WLAN_STATUS_NOT_SUPPORTED_AUTH_ALG || | |
527 | wpa_s->sme.auth_alg == data->auth.auth_type || | |
7e6646c7 | 528 | wpa_s->current_ssid->auth_alg == WPA_AUTH_ALG_LEAP) { |
0fb337c1 | 529 | wpas_connection_failed(wpa_s, wpa_s->pending_bssid); |
c1c02342 | 530 | wpa_supplicant_set_state(wpa_s, WPA_DISCONNECTED); |
cb1583f6 | 531 | return; |
7e6646c7 | 532 | } |
cb1583f6 SO |
533 | |
534 | switch (data->auth.auth_type) { | |
535 | case WLAN_AUTH_OPEN: | |
536 | wpa_s->current_ssid->auth_alg = WPA_AUTH_ALG_SHARED; | |
537 | ||
f049052b | 538 | wpa_dbg(wpa_s, MSG_DEBUG, "SME: Trying SHARED auth"); |
cb1583f6 SO |
539 | wpa_supplicant_associate(wpa_s, wpa_s->current_bss, |
540 | wpa_s->current_ssid); | |
541 | return; | |
542 | ||
543 | case WLAN_AUTH_SHARED_KEY: | |
544 | wpa_s->current_ssid->auth_alg = WPA_AUTH_ALG_LEAP; | |
545 | ||
f049052b | 546 | wpa_dbg(wpa_s, MSG_DEBUG, "SME: Trying LEAP auth"); |
cb1583f6 SO |
547 | wpa_supplicant_associate(wpa_s, wpa_s->current_bss, |
548 | wpa_s->current_ssid); | |
549 | return; | |
550 | ||
551 | default: | |
552 | return; | |
553 | } | |
c2a04078 JM |
554 | } |
555 | ||
556 | #ifdef CONFIG_IEEE80211R | |
557 | if (data->auth.auth_type == WLAN_AUTH_FT) { | |
558 | union wpa_event_data edata; | |
559 | os_memset(&edata, 0, sizeof(edata)); | |
560 | edata.ft_ies.ies = data->auth.ies; | |
561 | edata.ft_ies.ies_len = data->auth.ies_len; | |
562 | os_memcpy(edata.ft_ies.target_ap, data->auth.peer, ETH_ALEN); | |
563 | wpa_supplicant_event(wpa_s, EVENT_FT_RESPONSE, &edata); | |
564 | } | |
565 | #endif /* CONFIG_IEEE80211R */ | |
566 | ||
71024cb2 JM |
567 | sme_associate(wpa_s, ssid->mode, data->auth.peer, |
568 | data->auth.auth_type); | |
569 | } | |
570 | ||
571 | ||
572 | void sme_associate(struct wpa_supplicant *wpa_s, enum wpas_mode mode, | |
573 | const u8 *bssid, u16 auth_type) | |
574 | { | |
575 | struct wpa_driver_associate_params params; | |
d9a27b04 | 576 | struct ieee802_11_elems elems; |
80e8a5ee BG |
577 | #ifdef CONFIG_HT_OVERRIDES |
578 | struct ieee80211_ht_capabilities htcaps; | |
579 | struct ieee80211_ht_capabilities htcaps_mask; | |
580 | #endif /* CONFIG_HT_OVERRIDES */ | |
71024cb2 | 581 | |
c2a04078 | 582 | os_memset(¶ms, 0, sizeof(params)); |
71024cb2 | 583 | params.bssid = bssid; |
c2a04078 JM |
584 | params.ssid = wpa_s->sme.ssid; |
585 | params.ssid_len = wpa_s->sme.ssid_len; | |
586 | params.freq = wpa_s->sme.freq; | |
1f6c0ab8 BS |
587 | params.bg_scan_period = wpa_s->current_ssid ? |
588 | wpa_s->current_ssid->bg_scan_period : -1; | |
c2a04078 JM |
589 | params.wpa_ie = wpa_s->sme.assoc_req_ie_len ? |
590 | wpa_s->sme.assoc_req_ie : NULL; | |
591 | params.wpa_ie_len = wpa_s->sme.assoc_req_ie_len; | |
aca01605 JM |
592 | params.pairwise_suite = cipher_suite2driver(wpa_s->pairwise_cipher); |
593 | params.group_suite = cipher_suite2driver(wpa_s->group_cipher); | |
80e8a5ee BG |
594 | #ifdef CONFIG_HT_OVERRIDES |
595 | os_memset(&htcaps, 0, sizeof(htcaps)); | |
596 | os_memset(&htcaps_mask, 0, sizeof(htcaps_mask)); | |
597 | params.htcaps = (u8 *) &htcaps; | |
598 | params.htcaps_mask = (u8 *) &htcaps_mask; | |
599 | wpa_supplicant_apply_ht_overrides(wpa_s, wpa_s->current_ssid, ¶ms); | |
600 | #endif /* CONFIG_HT_OVERRIDES */ | |
c2a04078 | 601 | #ifdef CONFIG_IEEE80211R |
71024cb2 | 602 | if (auth_type == WLAN_AUTH_FT && wpa_s->sme.ft_ies) { |
c2a04078 JM |
603 | params.wpa_ie = wpa_s->sme.ft_ies; |
604 | params.wpa_ie_len = wpa_s->sme.ft_ies_len; | |
605 | } | |
606 | #endif /* CONFIG_IEEE80211R */ | |
71024cb2 | 607 | params.mode = mode; |
c2a04078 | 608 | params.mgmt_frame_protection = wpa_s->sme.mfp; |
62fa124c JM |
609 | if (wpa_s->sme.prev_bssid_set) |
610 | params.prev_bssid = wpa_s->sme.prev_bssid; | |
c2a04078 JM |
611 | |
612 | wpa_msg(wpa_s, MSG_INFO, "Trying to associate with " MACSTR | |
613 | " (SSID='%s' freq=%d MHz)", MAC2STR(params.bssid), | |
614 | params.ssid ? wpa_ssid_txt(params.ssid, params.ssid_len) : "", | |
615 | params.freq); | |
616 | ||
617 | wpa_supplicant_set_state(wpa_s, WPA_ASSOCIATING); | |
618 | ||
9efc3f2a JM |
619 | if (params.wpa_ie == NULL || |
620 | ieee802_11_parse_elems(params.wpa_ie, params.wpa_ie_len, &elems, 0) | |
d9a27b04 | 621 | < 0) { |
f049052b | 622 | wpa_dbg(wpa_s, MSG_DEBUG, "SME: Could not parse own IEs?!"); |
d9a27b04 JM |
623 | os_memset(&elems, 0, sizeof(elems)); |
624 | } | |
64fa840a JM |
625 | if (elems.rsn_ie) { |
626 | params.wpa_proto = WPA_PROTO_RSN; | |
d9a27b04 JM |
627 | wpa_sm_set_assoc_wpa_ie(wpa_s->wpa, elems.rsn_ie - 2, |
628 | elems.rsn_ie_len + 2); | |
64fa840a JM |
629 | } else if (elems.wpa_ie) { |
630 | params.wpa_proto = WPA_PROTO_WPA; | |
d9a27b04 JM |
631 | wpa_sm_set_assoc_wpa_ie(wpa_s->wpa, elems.wpa_ie - 2, |
632 | elems.wpa_ie_len + 2); | |
64fa840a | 633 | } else |
d9a27b04 | 634 | wpa_sm_set_assoc_wpa_ie(wpa_s->wpa, NULL, 0); |
ffad8858 | 635 | if (wpa_s->current_ssid && wpa_s->current_ssid->p2p_group) |
6e3f4b89 | 636 | params.p2p = 1; |
d9a27b04 | 637 | |
eea2fd9e JM |
638 | if (wpa_s->parent->set_sta_uapsd) |
639 | params.uapsd = wpa_s->parent->sta_uapsd; | |
640 | else | |
641 | params.uapsd = -1; | |
642 | ||
c2a04078 | 643 | if (wpa_drv_associate(wpa_s, ¶ms) < 0) { |
f049052b BG |
644 | wpa_msg(wpa_s, MSG_INFO, "SME: Association request to the " |
645 | "driver failed"); | |
e5ad96b7 | 646 | wpas_connection_failed(wpa_s, wpa_s->pending_bssid); |
c1c02342 | 647 | wpa_supplicant_set_state(wpa_s, WPA_DISCONNECTED); |
e5ad96b7 | 648 | os_memset(wpa_s->pending_bssid, 0, ETH_ALEN); |
c2a04078 JM |
649 | return; |
650 | } | |
651 | ||
e29853bb BG |
652 | eloop_register_timeout(SME_ASSOC_TIMEOUT, 0, sme_assoc_timer, wpa_s, |
653 | NULL); | |
c2a04078 JM |
654 | } |
655 | ||
656 | ||
657 | int sme_update_ft_ies(struct wpa_supplicant *wpa_s, const u8 *md, | |
658 | const u8 *ies, size_t ies_len) | |
659 | { | |
660 | if (md == NULL || ies == NULL) { | |
f049052b | 661 | wpa_dbg(wpa_s, MSG_DEBUG, "SME: Remove mobility domain"); |
c2a04078 JM |
662 | os_free(wpa_s->sme.ft_ies); |
663 | wpa_s->sme.ft_ies = NULL; | |
664 | wpa_s->sme.ft_ies_len = 0; | |
665 | wpa_s->sme.ft_used = 0; | |
666 | return 0; | |
667 | } | |
668 | ||
669 | os_memcpy(wpa_s->sme.mobility_domain, md, MOBILITY_DOMAIN_ID_LEN); | |
670 | wpa_hexdump(MSG_DEBUG, "SME: FT IEs", ies, ies_len); | |
671 | os_free(wpa_s->sme.ft_ies); | |
672 | wpa_s->sme.ft_ies = os_malloc(ies_len); | |
673 | if (wpa_s->sme.ft_ies == NULL) | |
674 | return -1; | |
675 | os_memcpy(wpa_s->sme.ft_ies, ies, ies_len); | |
676 | wpa_s->sme.ft_ies_len = ies_len; | |
677 | return 0; | |
678 | } | |
efa46078 JM |
679 | |
680 | ||
e29853bb | 681 | static void sme_deauth(struct wpa_supplicant *wpa_s) |
efa46078 | 682 | { |
8bac466b JM |
683 | int bssid_changed; |
684 | ||
8bac466b | 685 | bssid_changed = !is_zero_ether_addr(wpa_s->bssid); |
76d11d3f | 686 | |
76d11d3f JM |
687 | if (wpa_drv_deauthenticate(wpa_s, wpa_s->pending_bssid, |
688 | WLAN_REASON_DEAUTH_LEAVING) < 0) { | |
f049052b BG |
689 | wpa_msg(wpa_s, MSG_INFO, "SME: Deauth request to the driver " |
690 | "failed"); | |
76d11d3f | 691 | } |
62fa124c | 692 | wpa_s->sme.prev_bssid_set = 0; |
76d11d3f | 693 | |
0fb337c1 | 694 | wpas_connection_failed(wpa_s, wpa_s->pending_bssid); |
76d11d3f | 695 | wpa_supplicant_set_state(wpa_s, WPA_DISCONNECTED); |
efa46078 JM |
696 | os_memset(wpa_s->bssid, 0, ETH_ALEN); |
697 | os_memset(wpa_s->pending_bssid, 0, ETH_ALEN); | |
8bac466b JM |
698 | if (bssid_changed) |
699 | wpas_notify_bssid_changed(wpa_s); | |
efa46078 | 700 | } |
da1fb17c JM |
701 | |
702 | ||
e29853bb BG |
703 | void sme_event_assoc_reject(struct wpa_supplicant *wpa_s, |
704 | union wpa_event_data *data) | |
705 | { | |
706 | wpa_dbg(wpa_s, MSG_DEBUG, "SME: Association with " MACSTR " failed: " | |
707 | "status code %d", MAC2STR(wpa_s->pending_bssid), | |
708 | data->assoc_reject.status_code); | |
709 | ||
710 | eloop_cancel_timeout(sme_assoc_timer, wpa_s, NULL); | |
711 | ||
712 | /* | |
713 | * For now, unconditionally terminate the previous authentication. In | |
714 | * theory, this should not be needed, but mac80211 gets quite confused | |
715 | * if the authentication is left pending.. Some roaming cases might | |
716 | * benefit from using the previous authentication, so this could be | |
717 | * optimized in the future. | |
718 | */ | |
719 | sme_deauth(wpa_s); | |
720 | } | |
721 | ||
722 | ||
da1fb17c JM |
723 | void sme_event_auth_timed_out(struct wpa_supplicant *wpa_s, |
724 | union wpa_event_data *data) | |
725 | { | |
f049052b | 726 | wpa_dbg(wpa_s, MSG_DEBUG, "SME: Authentication timed out"); |
0fb337c1 | 727 | wpas_connection_failed(wpa_s, wpa_s->pending_bssid); |
1193dc8f | 728 | wpa_supplicant_mark_disassoc(wpa_s); |
da1fb17c JM |
729 | } |
730 | ||
731 | ||
732 | void sme_event_assoc_timed_out(struct wpa_supplicant *wpa_s, | |
733 | union wpa_event_data *data) | |
734 | { | |
f049052b | 735 | wpa_dbg(wpa_s, MSG_DEBUG, "SME: Association timed out"); |
0fb337c1 | 736 | wpas_connection_failed(wpa_s, wpa_s->pending_bssid); |
da1fb17c | 737 | wpa_supplicant_mark_disassoc(wpa_s); |
da1fb17c | 738 | } |
a84ed99e JM |
739 | |
740 | ||
741 | void sme_event_disassoc(struct wpa_supplicant *wpa_s, | |
742 | union wpa_event_data *data) | |
743 | { | |
f049052b | 744 | wpa_dbg(wpa_s, MSG_DEBUG, "SME: Disassociation event received"); |
17fbb751 | 745 | if (wpa_s->sme.prev_bssid_set) { |
a84ed99e JM |
746 | /* |
747 | * cfg80211/mac80211 can get into somewhat confused state if | |
748 | * the AP only disassociates us and leaves us in authenticated | |
749 | * state. For now, force the state to be cleared to avoid | |
750 | * confusing errors if we try to associate with the AP again. | |
751 | */ | |
f049052b BG |
752 | wpa_dbg(wpa_s, MSG_DEBUG, "SME: Deauthenticate to clear " |
753 | "driver state"); | |
7e26053a | 754 | wpa_drv_deauthenticate(wpa_s, wpa_s->sme.prev_bssid, |
a84ed99e JM |
755 | WLAN_REASON_DEAUTH_LEAVING); |
756 | } | |
757 | } | |
7d878ca7 JM |
758 | |
759 | ||
e29853bb BG |
760 | static void sme_auth_timer(void *eloop_ctx, void *timeout_ctx) |
761 | { | |
762 | struct wpa_supplicant *wpa_s = eloop_ctx; | |
763 | if (wpa_s->wpa_state == WPA_AUTHENTICATING) { | |
764 | wpa_msg(wpa_s, MSG_DEBUG, "SME: Authentication timeout"); | |
765 | sme_deauth(wpa_s); | |
766 | } | |
767 | } | |
768 | ||
769 | ||
770 | static void sme_assoc_timer(void *eloop_ctx, void *timeout_ctx) | |
771 | { | |
772 | struct wpa_supplicant *wpa_s = eloop_ctx; | |
773 | if (wpa_s->wpa_state == WPA_ASSOCIATING) { | |
774 | wpa_msg(wpa_s, MSG_DEBUG, "SME: Association timeout"); | |
775 | sme_deauth(wpa_s); | |
776 | } | |
777 | } | |
778 | ||
779 | ||
780 | void sme_state_changed(struct wpa_supplicant *wpa_s) | |
781 | { | |
782 | /* Make sure timers are cleaned up appropriately. */ | |
783 | if (wpa_s->wpa_state != WPA_ASSOCIATING) | |
784 | eloop_cancel_timeout(sme_assoc_timer, wpa_s, NULL); | |
785 | if (wpa_s->wpa_state != WPA_AUTHENTICATING) | |
786 | eloop_cancel_timeout(sme_auth_timer, wpa_s, NULL); | |
787 | } | |
788 | ||
789 | ||
790 | void sme_disassoc_while_authenticating(struct wpa_supplicant *wpa_s, | |
791 | const u8 *prev_pending_bssid) | |
792 | { | |
793 | /* | |
794 | * mac80211-workaround to force deauth on failed auth cmd, | |
795 | * requires us to remain in authenticating state to allow the | |
796 | * second authentication attempt to be continued properly. | |
797 | */ | |
798 | wpa_dbg(wpa_s, MSG_DEBUG, "SME: Allow pending authentication " | |
799 | "to proceed after disconnection event"); | |
800 | wpa_supplicant_set_state(wpa_s, WPA_AUTHENTICATING); | |
801 | os_memcpy(wpa_s->pending_bssid, prev_pending_bssid, ETH_ALEN); | |
802 | ||
803 | /* | |
804 | * Re-arm authentication timer in case auth fails for whatever reason. | |
805 | */ | |
806 | eloop_cancel_timeout(sme_auth_timer, wpa_s, NULL); | |
807 | eloop_register_timeout(SME_AUTH_TIMEOUT, 0, sme_auth_timer, wpa_s, | |
808 | NULL); | |
809 | } | |
810 | ||
811 | ||
812 | void sme_deinit(struct wpa_supplicant *wpa_s) | |
813 | { | |
814 | os_free(wpa_s->sme.ft_ies); | |
815 | wpa_s->sme.ft_ies = NULL; | |
816 | wpa_s->sme.ft_ies_len = 0; | |
817 | #ifdef CONFIG_IEEE80211W | |
818 | sme_stop_sa_query(wpa_s); | |
819 | #endif /* CONFIG_IEEE80211W */ | |
820 | ||
821 | eloop_cancel_timeout(sme_assoc_timer, wpa_s, NULL); | |
822 | eloop_cancel_timeout(sme_auth_timer, wpa_s, NULL); | |
c3701c66 RM |
823 | eloop_cancel_timeout(sme_obss_scan_timeout, wpa_s, NULL); |
824 | } | |
825 | ||
826 | ||
827 | static void sme_send_2040_bss_coex(struct wpa_supplicant *wpa_s, | |
828 | const u8 *chan_list, u8 num_channels, | |
829 | u8 num_intol) | |
830 | { | |
831 | struct ieee80211_2040_bss_coex_ie *bc_ie; | |
832 | struct ieee80211_2040_intol_chan_report *ic_report; | |
833 | struct wpabuf *buf; | |
834 | ||
835 | wpa_printf(MSG_DEBUG, "SME: Send 20/40 BSS Coexistence to " MACSTR, | |
836 | MAC2STR(wpa_s->bssid)); | |
837 | ||
838 | buf = wpabuf_alloc(2 + /* action.category + action_code */ | |
839 | sizeof(struct ieee80211_2040_bss_coex_ie) + | |
840 | sizeof(struct ieee80211_2040_intol_chan_report) + | |
841 | num_channels); | |
842 | if (buf == NULL) | |
843 | return; | |
844 | ||
845 | wpabuf_put_u8(buf, WLAN_ACTION_PUBLIC); | |
846 | wpabuf_put_u8(buf, WLAN_PA_20_40_BSS_COEX); | |
847 | ||
848 | bc_ie = wpabuf_put(buf, sizeof(*bc_ie)); | |
849 | bc_ie->element_id = WLAN_EID_20_40_BSS_COEXISTENCE; | |
850 | bc_ie->length = 1; | |
851 | if (num_intol) | |
852 | bc_ie->coex_param |= WLAN_20_40_BSS_COEX_20MHZ_WIDTH_REQ; | |
853 | ||
854 | if (num_channels > 0) { | |
855 | ic_report = wpabuf_put(buf, sizeof(*ic_report)); | |
856 | ic_report->element_id = WLAN_EID_20_40_BSS_INTOLERANT; | |
857 | ic_report->length = num_channels + 1; | |
858 | ic_report->op_class = 0; | |
859 | os_memcpy(wpabuf_put(buf, num_channels), chan_list, | |
860 | num_channels); | |
861 | } | |
862 | ||
863 | if (wpa_drv_send_action(wpa_s, wpa_s->assoc_freq, 0, wpa_s->bssid, | |
864 | wpa_s->own_addr, wpa_s->bssid, | |
865 | wpabuf_head(buf), wpabuf_len(buf), 0) < 0) { | |
866 | wpa_msg(wpa_s, MSG_INFO, | |
867 | "SME: Failed to send 20/40 BSS Coexistence frame"); | |
868 | } | |
869 | ||
870 | wpabuf_free(buf); | |
871 | } | |
872 | ||
873 | ||
874 | /** | |
875 | * enum wpas_band - Frequency band | |
876 | * @WPAS_BAND_2GHZ: 2.4 GHz ISM band | |
877 | * @WPAS_BAND_5GHZ: around 5 GHz band (4.9 - 5.7 GHz) | |
878 | */ | |
879 | enum wpas_band { | |
880 | WPAS_BAND_2GHZ, | |
881 | WPAS_BAND_5GHZ, | |
882 | WPAS_BAND_INVALID | |
883 | }; | |
884 | ||
885 | /** | |
886 | * freq_to_channel - Convert frequency into channel info | |
887 | * @channel: Buffer for returning channel number | |
888 | * Returns: Band (2 or 5 GHz) | |
889 | */ | |
890 | static enum wpas_band freq_to_channel(int freq, u8 *channel) | |
891 | { | |
892 | enum wpas_band band = (freq <= 2484) ? WPAS_BAND_2GHZ : WPAS_BAND_5GHZ; | |
893 | u8 chan = 0; | |
894 | ||
895 | if (freq >= 2412 && freq <= 2472) | |
896 | chan = (freq - 2407) / 5; | |
897 | else if (freq == 2484) | |
898 | chan = 14; | |
899 | else if (freq >= 5180 && freq <= 5805) | |
900 | chan = (freq - 5000) / 5; | |
901 | ||
902 | *channel = chan; | |
903 | return band; | |
904 | } | |
905 | ||
906 | ||
907 | int sme_proc_obss_scan(struct wpa_supplicant *wpa_s) | |
908 | { | |
909 | struct wpa_bss *bss; | |
910 | const u8 *ie; | |
911 | u16 ht_cap; | |
912 | u8 chan_list[P2P_MAX_CHANNELS], channel; | |
913 | u8 num_channels = 0, num_intol = 0, i; | |
914 | ||
915 | if (!wpa_s->sme.sched_obss_scan) | |
916 | return 0; | |
917 | ||
918 | wpa_s->sme.sched_obss_scan = 0; | |
919 | if (!wpa_s->current_bss || wpa_s->wpa_state != WPA_COMPLETED) | |
920 | return 1; | |
921 | ||
922 | /* | |
923 | * Check whether AP uses regulatory triplet or channel triplet in | |
924 | * country info. Right now the operating class of the BSS channel | |
925 | * width trigger event is "unknown" (IEEE Std 802.11-2012 10.15.12), | |
926 | * based on the assumption that operating class triplet is not used in | |
927 | * beacon frame. If the First Channel Number/Operating Extension | |
928 | * Identifier octet has a positive integer value of 201 or greater, | |
929 | * then its operating class triplet. | |
930 | * | |
931 | * TODO: If Supported Operating Classes element is present in beacon | |
932 | * frame, have to lookup operating class in Annex E and fill them in | |
933 | * 2040 coex frame. | |
934 | */ | |
935 | ie = wpa_bss_get_ie(wpa_s->current_bss, WLAN_EID_COUNTRY); | |
936 | if (ie && (ie[1] >= 6) && (ie[5] >= 201)) | |
937 | return 1; | |
938 | ||
939 | os_memset(chan_list, 0, sizeof(chan_list)); | |
940 | ||
941 | dl_list_for_each(bss, &wpa_s->bss, struct wpa_bss, list) { | |
942 | /* Skip other band bss */ | |
943 | if (freq_to_channel(bss->freq, &channel) != WPAS_BAND_2GHZ) | |
944 | continue; | |
945 | ||
946 | ie = wpa_bss_get_ie(bss, WLAN_EID_HT_CAP); | |
947 | ht_cap = (ie && (ie[1] == 26)) ? WPA_GET_LE16(ie + 2) : 0; | |
948 | ||
949 | if (!ht_cap || (ht_cap & HT_CAP_INFO_40MHZ_INTOLERANT)) { | |
950 | /* Check whether the channel is already considered */ | |
951 | for (i = 0; i < num_channels; i++) { | |
952 | if (channel == chan_list[i]) | |
953 | break; | |
954 | } | |
955 | if (i != num_channels) | |
956 | continue; | |
957 | ||
958 | if (ht_cap & HT_CAP_INFO_40MHZ_INTOLERANT) | |
959 | num_intol++; | |
960 | ||
961 | chan_list[num_channels++] = channel; | |
962 | } | |
963 | } | |
964 | ||
965 | sme_send_2040_bss_coex(wpa_s, chan_list, num_channels, num_intol); | |
966 | return 1; | |
967 | } | |
968 | ||
969 | ||
6434ad09 JM |
970 | static struct hostapd_hw_modes * get_mode(struct hostapd_hw_modes *modes, |
971 | u16 num_modes, | |
972 | enum hostapd_hw_mode mode) | |
973 | { | |
974 | u16 i; | |
975 | ||
976 | for (i = 0; i < num_modes; i++) { | |
977 | if (modes[i].mode == mode) | |
978 | return &modes[i]; | |
979 | } | |
980 | ||
981 | return NULL; | |
982 | } | |
983 | ||
984 | ||
985 | static void wpa_setband_scan_freqs_list(struct wpa_supplicant *wpa_s, | |
986 | enum hostapd_hw_mode band, | |
987 | struct wpa_driver_scan_params *params) | |
988 | { | |
989 | /* Include only supported channels for the specified band */ | |
990 | struct hostapd_hw_modes *mode; | |
991 | int count, i; | |
992 | ||
993 | mode = get_mode(wpa_s->hw.modes, wpa_s->hw.num_modes, band); | |
994 | if (mode == NULL) { | |
995 | /* No channels supported in this band - use empty list */ | |
996 | params->freqs = os_zalloc(sizeof(int)); | |
997 | return; | |
998 | } | |
999 | ||
f9884c09 | 1000 | params->freqs = os_calloc(mode->num_channels + 1, sizeof(int)); |
6434ad09 JM |
1001 | if (params->freqs == NULL) |
1002 | return; | |
1003 | for (count = 0, i = 0; i < mode->num_channels; i++) { | |
1004 | if (mode->channels[i].flag & HOSTAPD_CHAN_DISABLED) | |
1005 | continue; | |
1006 | params->freqs[count++] = mode->channels[i].freq; | |
1007 | } | |
1008 | } | |
1009 | ||
1010 | ||
c3701c66 RM |
1011 | static void sme_obss_scan_timeout(void *eloop_ctx, void *timeout_ctx) |
1012 | { | |
1013 | struct wpa_supplicant *wpa_s = eloop_ctx; | |
1014 | struct wpa_driver_scan_params params; | |
1015 | ||
1016 | if (!wpa_s->current_bss) { | |
1017 | wpa_printf(MSG_DEBUG, "SME OBSS: Ignore scan request"); | |
1018 | return; | |
1019 | } | |
1020 | ||
1021 | os_memset(¶ms, 0, sizeof(params)); | |
6434ad09 | 1022 | wpa_setband_scan_freqs_list(wpa_s, HOSTAPD_MODE_IEEE80211G, ¶ms); |
c3701c66 RM |
1023 | wpa_printf(MSG_DEBUG, "SME OBSS: Request an OBSS scan"); |
1024 | ||
1025 | if (wpa_supplicant_trigger_scan(wpa_s, ¶ms)) | |
1026 | wpa_printf(MSG_DEBUG, "SME OBSS: Failed to trigger scan"); | |
1027 | else | |
1028 | wpa_s->sme.sched_obss_scan = 1; | |
6434ad09 | 1029 | os_free(params.freqs); |
c3701c66 RM |
1030 | |
1031 | eloop_register_timeout(wpa_s->sme.obss_scan_int, 0, | |
1032 | sme_obss_scan_timeout, wpa_s, NULL); | |
1033 | } | |
1034 | ||
1035 | ||
1036 | void sme_sched_obss_scan(struct wpa_supplicant *wpa_s, int enable) | |
1037 | { | |
1038 | const u8 *ie; | |
1039 | struct wpa_bss *bss = wpa_s->current_bss; | |
1040 | struct wpa_ssid *ssid = wpa_s->current_ssid; | |
b6871ebb AN |
1041 | struct hostapd_hw_modes *hw_mode = NULL; |
1042 | int i; | |
c3701c66 RM |
1043 | |
1044 | eloop_cancel_timeout(sme_obss_scan_timeout, wpa_s, NULL); | |
1045 | wpa_s->sme.sched_obss_scan = 0; | |
1046 | if (!enable) | |
1047 | return; | |
1048 | ||
368b1957 AK |
1049 | /* |
1050 | * Schedule OBSS scan if driver is using station SME in wpa_supplicant | |
1051 | * or it expects OBSS scan to be performed by wpa_supplicant. | |
1052 | */ | |
1053 | if (!((wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME) || | |
1054 | (wpa_s->drv_flags & WPA_DRIVER_FLAGS_OBSS_SCAN)) || | |
1055 | ssid == NULL || ssid->mode != IEEE80211_MODE_INFRA) | |
1056 | return; | |
c3701c66 | 1057 | |
b6871ebb AN |
1058 | if (!wpa_s->hw.modes) |
1059 | return; | |
1060 | ||
1061 | /* only HT caps in 11g mode are relevant */ | |
1062 | for (i = 0; i < wpa_s->hw.num_modes; i++) { | |
1063 | hw_mode = &wpa_s->hw.modes[i]; | |
1064 | if (hw_mode->mode == HOSTAPD_MODE_IEEE80211G) | |
1065 | break; | |
1066 | } | |
1067 | ||
1068 | /* Driver does not support HT40 for 11g or doesn't have 11g. */ | |
1069 | if (i == wpa_s->hw.num_modes || !hw_mode || | |
1070 | !(hw_mode->ht_capab & HT_CAP_INFO_SUPP_CHANNEL_WIDTH_SET)) | |
1071 | return; | |
c3701c66 RM |
1072 | |
1073 | if (bss == NULL || bss->freq < 2400 || bss->freq > 2500) | |
1074 | return; /* Not associated on 2.4 GHz band */ | |
1075 | ||
1076 | /* Check whether AP supports HT40 */ | |
1077 | ie = wpa_bss_get_ie(wpa_s->current_bss, WLAN_EID_HT_CAP); | |
1078 | if (!ie || ie[1] < 2 || | |
1079 | !(WPA_GET_LE16(ie + 2) & HT_CAP_INFO_SUPP_CHANNEL_WIDTH_SET)) | |
1080 | return; /* AP does not support HT40 */ | |
1081 | ||
1082 | ie = wpa_bss_get_ie(wpa_s->current_bss, | |
1083 | WLAN_EID_OVERLAPPING_BSS_SCAN_PARAMS); | |
1084 | if (!ie || ie[1] < 14) | |
1085 | return; /* AP does not request OBSS scans */ | |
1086 | ||
1087 | wpa_s->sme.obss_scan_int = WPA_GET_LE16(ie + 6); | |
1088 | if (wpa_s->sme.obss_scan_int < 10) { | |
1089 | wpa_printf(MSG_DEBUG, "SME: Invalid OBSS Scan Interval %u " | |
1090 | "replaced with the minimum 10 sec", | |
1091 | wpa_s->sme.obss_scan_int); | |
1092 | wpa_s->sme.obss_scan_int = 10; | |
1093 | } | |
1094 | wpa_printf(MSG_DEBUG, "SME: OBSS Scan Interval %u sec", | |
1095 | wpa_s->sme.obss_scan_int); | |
1096 | eloop_register_timeout(wpa_s->sme.obss_scan_int, 0, | |
1097 | sme_obss_scan_timeout, wpa_s, NULL); | |
e29853bb BG |
1098 | } |
1099 | ||
1100 | ||
7d878ca7 JM |
1101 | #ifdef CONFIG_IEEE80211W |
1102 | ||
1103 | static const unsigned int sa_query_max_timeout = 1000; | |
1104 | static const unsigned int sa_query_retry_timeout = 201; | |
1105 | ||
1106 | static int sme_check_sa_query_timeout(struct wpa_supplicant *wpa_s) | |
1107 | { | |
1108 | u32 tu; | |
1109 | struct os_time now, passed; | |
1110 | os_get_time(&now); | |
1111 | os_time_sub(&now, &wpa_s->sme.sa_query_start, &passed); | |
1112 | tu = (passed.sec * 1000000 + passed.usec) / 1024; | |
1113 | if (sa_query_max_timeout < tu) { | |
f049052b | 1114 | wpa_dbg(wpa_s, MSG_DEBUG, "SME: SA Query timed out"); |
7d878ca7 JM |
1115 | sme_stop_sa_query(wpa_s); |
1116 | wpa_supplicant_deauthenticate( | |
1117 | wpa_s, WLAN_REASON_PREV_AUTH_NOT_VALID); | |
1118 | return 1; | |
1119 | } | |
1120 | ||
1121 | return 0; | |
1122 | } | |
1123 | ||
1124 | ||
1125 | static void sme_send_sa_query_req(struct wpa_supplicant *wpa_s, | |
1126 | const u8 *trans_id) | |
1127 | { | |
1128 | u8 req[2 + WLAN_SA_QUERY_TR_ID_LEN]; | |
f049052b BG |
1129 | wpa_dbg(wpa_s, MSG_DEBUG, "SME: Sending SA Query Request to " |
1130 | MACSTR, MAC2STR(wpa_s->bssid)); | |
7d878ca7 JM |
1131 | wpa_hexdump(MSG_DEBUG, "SME: SA Query Transaction ID", |
1132 | trans_id, WLAN_SA_QUERY_TR_ID_LEN); | |
1133 | req[0] = WLAN_ACTION_SA_QUERY; | |
1134 | req[1] = WLAN_SA_QUERY_REQUEST; | |
1135 | os_memcpy(req + 2, trans_id, WLAN_SA_QUERY_TR_ID_LEN); | |
190b9062 | 1136 | if (wpa_drv_send_action(wpa_s, wpa_s->assoc_freq, 0, wpa_s->bssid, |
7d878ca7 | 1137 | wpa_s->own_addr, wpa_s->bssid, |
b106173a | 1138 | req, sizeof(req), 0) < 0) |
f049052b BG |
1139 | wpa_msg(wpa_s, MSG_INFO, "SME: Failed to send SA Query " |
1140 | "Request"); | |
7d878ca7 JM |
1141 | } |
1142 | ||
1143 | ||
1144 | static void sme_sa_query_timer(void *eloop_ctx, void *timeout_ctx) | |
1145 | { | |
1146 | struct wpa_supplicant *wpa_s = eloop_ctx; | |
1147 | unsigned int timeout, sec, usec; | |
1148 | u8 *trans_id, *nbuf; | |
1149 | ||
1150 | if (wpa_s->sme.sa_query_count > 0 && | |
1151 | sme_check_sa_query_timeout(wpa_s)) | |
1152 | return; | |
1153 | ||
067ffa26 JM |
1154 | nbuf = os_realloc_array(wpa_s->sme.sa_query_trans_id, |
1155 | wpa_s->sme.sa_query_count + 1, | |
1156 | WLAN_SA_QUERY_TR_ID_LEN); | |
7d878ca7 JM |
1157 | if (nbuf == NULL) |
1158 | return; | |
1159 | if (wpa_s->sme.sa_query_count == 0) { | |
1160 | /* Starting a new SA Query procedure */ | |
1161 | os_get_time(&wpa_s->sme.sa_query_start); | |
1162 | } | |
1163 | trans_id = nbuf + wpa_s->sme.sa_query_count * WLAN_SA_QUERY_TR_ID_LEN; | |
1164 | wpa_s->sme.sa_query_trans_id = nbuf; | |
1165 | wpa_s->sme.sa_query_count++; | |
1166 | ||
1167 | os_get_random(trans_id, WLAN_SA_QUERY_TR_ID_LEN); | |
1168 | ||
1169 | timeout = sa_query_retry_timeout; | |
1170 | sec = ((timeout / 1000) * 1024) / 1000; | |
1171 | usec = (timeout % 1000) * 1024; | |
1172 | eloop_register_timeout(sec, usec, sme_sa_query_timer, wpa_s, NULL); | |
1173 | ||
f049052b BG |
1174 | wpa_dbg(wpa_s, MSG_DEBUG, "SME: Association SA Query attempt %d", |
1175 | wpa_s->sme.sa_query_count); | |
7d878ca7 JM |
1176 | |
1177 | sme_send_sa_query_req(wpa_s, trans_id); | |
1178 | } | |
1179 | ||
1180 | ||
1181 | static void sme_start_sa_query(struct wpa_supplicant *wpa_s) | |
1182 | { | |
1183 | sme_sa_query_timer(wpa_s, NULL); | |
1184 | } | |
1185 | ||
1186 | ||
19df9b07 | 1187 | static void sme_stop_sa_query(struct wpa_supplicant *wpa_s) |
7d878ca7 JM |
1188 | { |
1189 | eloop_cancel_timeout(sme_sa_query_timer, wpa_s, NULL); | |
1190 | os_free(wpa_s->sme.sa_query_trans_id); | |
1191 | wpa_s->sme.sa_query_trans_id = NULL; | |
1192 | wpa_s->sme.sa_query_count = 0; | |
1193 | } | |
1194 | ||
1195 | ||
1196 | void sme_event_unprot_disconnect(struct wpa_supplicant *wpa_s, const u8 *sa, | |
1197 | const u8 *da, u16 reason_code) | |
1198 | { | |
1199 | struct wpa_ssid *ssid; | |
1200 | ||
1201 | if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME)) | |
1202 | return; | |
1203 | if (wpa_s->wpa_state != WPA_COMPLETED) | |
1204 | return; | |
1205 | ssid = wpa_s->current_ssid; | |
62d49803 JM |
1206 | if (ssid == NULL || |
1207 | (ssid->ieee80211w == MGMT_FRAME_PROTECTION_DEFAULT ? | |
1208 | wpa_s->conf->pmf : ssid->ieee80211w) == NO_MGMT_FRAME_PROTECTION) | |
7d878ca7 JM |
1209 | return; |
1210 | if (os_memcmp(sa, wpa_s->bssid, ETH_ALEN) != 0) | |
1211 | return; | |
1212 | if (reason_code != WLAN_REASON_CLASS2_FRAME_FROM_NONAUTH_STA && | |
1213 | reason_code != WLAN_REASON_CLASS3_FRAME_FROM_NONASSOC_STA) | |
1214 | return; | |
1215 | if (wpa_s->sme.sa_query_count > 0) | |
1216 | return; | |
1217 | ||
f049052b BG |
1218 | wpa_dbg(wpa_s, MSG_DEBUG, "SME: Unprotected disconnect dropped - " |
1219 | "possible AP/STA state mismatch - trigger SA Query"); | |
7d878ca7 JM |
1220 | sme_start_sa_query(wpa_s); |
1221 | } | |
1222 | ||
1223 | ||
1224 | void sme_sa_query_rx(struct wpa_supplicant *wpa_s, const u8 *sa, | |
1225 | const u8 *data, size_t len) | |
1226 | { | |
1227 | int i; | |
1228 | ||
1229 | if (wpa_s->sme.sa_query_trans_id == NULL || | |
1230 | len < 1 + WLAN_SA_QUERY_TR_ID_LEN || | |
1231 | data[0] != WLAN_SA_QUERY_RESPONSE) | |
1232 | return; | |
f049052b BG |
1233 | wpa_dbg(wpa_s, MSG_DEBUG, "SME: Received SA Query response from " |
1234 | MACSTR " (trans_id %02x%02x)", MAC2STR(sa), data[1], data[2]); | |
7d878ca7 JM |
1235 | |
1236 | if (os_memcmp(sa, wpa_s->bssid, ETH_ALEN) != 0) | |
1237 | return; | |
1238 | ||
1239 | for (i = 0; i < wpa_s->sme.sa_query_count; i++) { | |
1240 | if (os_memcmp(wpa_s->sme.sa_query_trans_id + | |
1241 | i * WLAN_SA_QUERY_TR_ID_LEN, | |
1242 | data + 1, WLAN_SA_QUERY_TR_ID_LEN) == 0) | |
1243 | break; | |
1244 | } | |
1245 | ||
1246 | if (i >= wpa_s->sme.sa_query_count) { | |
f049052b BG |
1247 | wpa_dbg(wpa_s, MSG_DEBUG, "SME: No matching SA Query " |
1248 | "transaction identifier found"); | |
7d878ca7 JM |
1249 | return; |
1250 | } | |
1251 | ||
f049052b BG |
1252 | wpa_dbg(wpa_s, MSG_DEBUG, "SME: Reply to pending SA Query received " |
1253 | "from " MACSTR, MAC2STR(sa)); | |
7d878ca7 JM |
1254 | sme_stop_sa_query(wpa_s); |
1255 | } | |
1256 | ||
1257 | #endif /* CONFIG_IEEE80211W */ |