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Commit | Line | Data |
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c2a04078 JM |
1 | /* |
2 | * wpa_supplicant - SME | |
71024cb2 | 3 | * Copyright (c) 2009-2010, 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" |
3acb5005 JM |
17 | #include "rsn_supp/wpa.h" |
18 | #include "rsn_supp/pmksa_cache.h" | |
c2a04078 JM |
19 | #include "config.h" |
20 | #include "wpa_supplicant_i.h" | |
2d5b792d | 21 | #include "driver_i.h" |
c2a04078 JM |
22 | #include "wpas_glue.h" |
23 | #include "wps_supplicant.h" | |
5f3a6aa0 | 24 | #include "p2p_supplicant.h" |
8bac466b | 25 | #include "notify.h" |
6fa81a3b | 26 | #include "bss.h" |
9ba9fa07 | 27 | #include "scan.h" |
c2a04078 JM |
28 | #include "sme.h" |
29 | ||
e29853bb BG |
30 | #define SME_AUTH_TIMEOUT 5 |
31 | #define SME_ASSOC_TIMEOUT 5 | |
32 | ||
33 | static void sme_auth_timer(void *eloop_ctx, void *timeout_ctx); | |
34 | static void sme_assoc_timer(void *eloop_ctx, void *timeout_ctx); | |
35 | #ifdef CONFIG_IEEE80211W | |
36 | static void sme_stop_sa_query(struct wpa_supplicant *wpa_s); | |
37 | #endif /* CONFIG_IEEE80211W */ | |
38 | ||
39 | ||
c2a04078 | 40 | void sme_authenticate(struct wpa_supplicant *wpa_s, |
6fa81a3b | 41 | struct wpa_bss *bss, struct wpa_ssid *ssid) |
c2a04078 JM |
42 | { |
43 | struct wpa_driver_auth_params params; | |
8bac466b | 44 | struct wpa_ssid *old_ssid; |
fdbe50ed | 45 | #ifdef CONFIG_IEEE80211R |
c2a04078 | 46 | const u8 *ie; |
fdbe50ed | 47 | #endif /* CONFIG_IEEE80211R */ |
c2a04078 JM |
48 | #ifdef CONFIG_IEEE80211R |
49 | const u8 *md = NULL; | |
50 | #endif /* CONFIG_IEEE80211R */ | |
8bac466b | 51 | int i, bssid_changed; |
c2a04078 JM |
52 | |
53 | if (bss == NULL) { | |
f049052b BG |
54 | wpa_msg(wpa_s, MSG_ERROR, "SME: No scan result available for " |
55 | "the network"); | |
c2a04078 JM |
56 | return; |
57 | } | |
58 | ||
8f770587 JM |
59 | wpa_s->current_bss = bss; |
60 | ||
c2a04078 JM |
61 | os_memset(¶ms, 0, sizeof(params)); |
62 | wpa_s->reassociate = 0; | |
63 | ||
64 | params.freq = bss->freq; | |
65 | params.bssid = bss->bssid; | |
6fa81a3b JM |
66 | params.ssid = bss->ssid; |
67 | params.ssid_len = bss->ssid_len; | |
2f4f73b1 | 68 | params.p2p = ssid->p2p_group; |
c2a04078 | 69 | |
62fa124c JM |
70 | if (wpa_s->sme.ssid_len != params.ssid_len || |
71 | os_memcmp(wpa_s->sme.ssid, params.ssid, params.ssid_len) != 0) | |
72 | wpa_s->sme.prev_bssid_set = 0; | |
73 | ||
c2a04078 JM |
74 | wpa_s->sme.freq = params.freq; |
75 | os_memcpy(wpa_s->sme.ssid, params.ssid, params.ssid_len); | |
76 | wpa_s->sme.ssid_len = params.ssid_len; | |
77 | ||
abd9fafa | 78 | params.auth_alg = WPA_AUTH_ALG_OPEN; |
c2a04078 JM |
79 | #ifdef IEEE8021X_EAPOL |
80 | if (ssid->key_mgmt & WPA_KEY_MGMT_IEEE8021X_NO_WPA) { | |
81 | if (ssid->leap) { | |
82 | if (ssid->non_leap == 0) | |
abd9fafa | 83 | params.auth_alg = WPA_AUTH_ALG_LEAP; |
c2a04078 | 84 | else |
abd9fafa | 85 | params.auth_alg |= WPA_AUTH_ALG_LEAP; |
c2a04078 JM |
86 | } |
87 | } | |
88 | #endif /* IEEE8021X_EAPOL */ | |
f049052b BG |
89 | wpa_dbg(wpa_s, MSG_DEBUG, "Automatic auth_alg selection: 0x%x", |
90 | params.auth_alg); | |
c2a04078 | 91 | if (ssid->auth_alg) { |
abd9fafa | 92 | params.auth_alg = ssid->auth_alg; |
f049052b BG |
93 | wpa_dbg(wpa_s, MSG_DEBUG, "Overriding auth_alg selection: " |
94 | "0x%x", params.auth_alg); | |
c2a04078 JM |
95 | } |
96 | ||
a0b2f99b JM |
97 | for (i = 0; i < NUM_WEP_KEYS; i++) { |
98 | if (ssid->wep_key_len[i]) | |
99 | params.wep_key[i] = ssid->wep_key[i]; | |
100 | params.wep_key_len[i] = ssid->wep_key_len[i]; | |
101 | } | |
102 | params.wep_tx_keyidx = ssid->wep_tx_keyidx; | |
103 | ||
8bac466b | 104 | bssid_changed = !is_zero_ether_addr(wpa_s->bssid); |
c2a04078 JM |
105 | os_memset(wpa_s->bssid, 0, ETH_ALEN); |
106 | os_memcpy(wpa_s->pending_bssid, bss->bssid, ETH_ALEN); | |
8bac466b JM |
107 | if (bssid_changed) |
108 | wpas_notify_bssid_changed(wpa_s); | |
c2a04078 | 109 | |
f337f0e9 JM |
110 | if ((wpa_bss_get_vendor_ie(bss, WPA_IE_VENDOR_TYPE) || |
111 | wpa_bss_get_ie(bss, WLAN_EID_RSN)) && | |
0bf927a0 | 112 | wpa_key_mgmt_wpa(ssid->key_mgmt)) { |
c2a04078 JM |
113 | int try_opportunistic; |
114 | try_opportunistic = ssid->proactive_key_caching && | |
115 | (ssid->proto & WPA_PROTO_RSN); | |
116 | if (pmksa_cache_set_current(wpa_s->wpa, NULL, bss->bssid, | |
117 | wpa_s->current_ssid, | |
118 | try_opportunistic) == 0) | |
119 | eapol_sm_notify_pmkid_attempt(wpa_s->eapol, 1); | |
120 | wpa_s->sme.assoc_req_ie_len = sizeof(wpa_s->sme.assoc_req_ie); | |
121 | if (wpa_supplicant_set_suites(wpa_s, bss, ssid, | |
122 | wpa_s->sme.assoc_req_ie, | |
123 | &wpa_s->sme.assoc_req_ie_len)) { | |
f049052b BG |
124 | wpa_msg(wpa_s, MSG_WARNING, "SME: Failed to set WPA " |
125 | "key management and encryption suites"); | |
c2a04078 JM |
126 | return; |
127 | } | |
0bf927a0 | 128 | } else if (wpa_key_mgmt_wpa_any(ssid->key_mgmt)) { |
c2a04078 JM |
129 | wpa_s->sme.assoc_req_ie_len = sizeof(wpa_s->sme.assoc_req_ie); |
130 | if (wpa_supplicant_set_suites(wpa_s, NULL, ssid, | |
131 | wpa_s->sme.assoc_req_ie, | |
132 | &wpa_s->sme.assoc_req_ie_len)) { | |
f049052b BG |
133 | wpa_msg(wpa_s, MSG_WARNING, "SME: Failed to set WPA " |
134 | "key management and encryption suites (no " | |
135 | "scan results)"); | |
c2a04078 JM |
136 | return; |
137 | } | |
138 | #ifdef CONFIG_WPS | |
139 | } else if (ssid->key_mgmt & WPA_KEY_MGMT_WPS) { | |
140 | struct wpabuf *wps_ie; | |
141 | wps_ie = wps_build_assoc_req_ie(wpas_wps_get_req_type(ssid)); | |
142 | if (wps_ie && wpabuf_len(wps_ie) <= | |
143 | sizeof(wpa_s->sme.assoc_req_ie)) { | |
144 | wpa_s->sme.assoc_req_ie_len = wpabuf_len(wps_ie); | |
145 | os_memcpy(wpa_s->sme.assoc_req_ie, wpabuf_head(wps_ie), | |
146 | wpa_s->sme.assoc_req_ie_len); | |
147 | } else | |
148 | wpa_s->sme.assoc_req_ie_len = 0; | |
149 | wpabuf_free(wps_ie); | |
150 | wpa_supplicant_set_non_wpa_policy(wpa_s, ssid); | |
151 | #endif /* CONFIG_WPS */ | |
152 | } else { | |
153 | wpa_supplicant_set_non_wpa_policy(wpa_s, ssid); | |
154 | wpa_s->sme.assoc_req_ie_len = 0; | |
155 | } | |
156 | ||
157 | #ifdef CONFIG_IEEE80211R | |
6fa81a3b | 158 | ie = wpa_bss_get_ie(bss, WLAN_EID_MOBILITY_DOMAIN); |
c2a04078 JM |
159 | if (ie && ie[1] >= MOBILITY_DOMAIN_ID_LEN) |
160 | md = ie + 2; | |
e7846b68 | 161 | wpa_sm_set_ft_params(wpa_s->wpa, ie, ie ? 2 + ie[1] : 0); |
c2a04078 JM |
162 | if (md) { |
163 | /* Prepare for the next transition */ | |
76b7981d | 164 | wpa_ft_prepare_auth_request(wpa_s->wpa, ie); |
c2a04078 JM |
165 | } |
166 | ||
0bf927a0 | 167 | if (md && wpa_key_mgmt_ft(ssid->key_mgmt)) { |
c2a04078 JM |
168 | if (wpa_s->sme.assoc_req_ie_len + 5 < |
169 | sizeof(wpa_s->sme.assoc_req_ie)) { | |
170 | struct rsn_mdie *mdie; | |
171 | u8 *pos = wpa_s->sme.assoc_req_ie + | |
172 | wpa_s->sme.assoc_req_ie_len; | |
173 | *pos++ = WLAN_EID_MOBILITY_DOMAIN; | |
174 | *pos++ = sizeof(*mdie); | |
175 | mdie = (struct rsn_mdie *) pos; | |
176 | os_memcpy(mdie->mobility_domain, md, | |
177 | MOBILITY_DOMAIN_ID_LEN); | |
f4ec630d | 178 | mdie->ft_capab = md[MOBILITY_DOMAIN_ID_LEN]; |
c2a04078 JM |
179 | wpa_s->sme.assoc_req_ie_len += 5; |
180 | } | |
181 | ||
182 | if (wpa_s->sme.ft_used && | |
0d7b4409 JM |
183 | os_memcmp(md, wpa_s->sme.mobility_domain, 2) == 0 && |
184 | wpa_sm_has_ptk(wpa_s->wpa)) { | |
f049052b BG |
185 | wpa_dbg(wpa_s, MSG_DEBUG, "SME: Trying to use FT " |
186 | "over-the-air"); | |
abd9fafa | 187 | params.auth_alg = WPA_AUTH_ALG_FT; |
c2a04078 JM |
188 | params.ie = wpa_s->sme.ft_ies; |
189 | params.ie_len = wpa_s->sme.ft_ies_len; | |
190 | } | |
191 | } | |
192 | #endif /* CONFIG_IEEE80211R */ | |
193 | ||
194 | #ifdef CONFIG_IEEE80211W | |
70f8cc8e | 195 | wpa_s->sme.mfp = ssid->ieee80211w; |
f337f0e9 | 196 | if (ssid->ieee80211w != NO_MGMT_FRAME_PROTECTION) { |
6fa81a3b | 197 | const u8 *rsn = wpa_bss_get_ie(bss, WLAN_EID_RSN); |
c2a04078 JM |
198 | struct wpa_ie_data _ie; |
199 | if (rsn && wpa_parse_wpa_ie(rsn, 2 + rsn[1], &_ie) == 0 && | |
200 | _ie.capabilities & | |
201 | (WPA_CAPABILITY_MFPC | WPA_CAPABILITY_MFPR)) { | |
f049052b BG |
202 | wpa_dbg(wpa_s, MSG_DEBUG, "SME: Selected AP supports " |
203 | "MFP: require MFP"); | |
c2a04078 JM |
204 | wpa_s->sme.mfp = MGMT_FRAME_PROTECTION_REQUIRED; |
205 | } | |
206 | } | |
207 | #endif /* CONFIG_IEEE80211W */ | |
208 | ||
5f3a6aa0 JM |
209 | #ifdef CONFIG_P2P |
210 | if (wpa_s->global->p2p) { | |
211 | u8 *pos; | |
212 | size_t len; | |
213 | int res; | |
5f3a6aa0 JM |
214 | pos = wpa_s->sme.assoc_req_ie + wpa_s->sme.assoc_req_ie_len; |
215 | len = sizeof(wpa_s->sme.assoc_req_ie) - | |
216 | wpa_s->sme.assoc_req_ie_len; | |
ffad8858 JM |
217 | res = wpas_p2p_assoc_req_ie(wpa_s, bss, pos, len, |
218 | ssid->p2p_group); | |
5f3a6aa0 JM |
219 | if (res >= 0) |
220 | wpa_s->sme.assoc_req_ie_len += res; | |
221 | } | |
222 | #endif /* CONFIG_P2P */ | |
223 | ||
92cbcf91 JM |
224 | #ifdef CONFIG_INTERWORKING |
225 | if (wpa_s->conf->interworking) { | |
226 | u8 *pos = wpa_s->sme.assoc_req_ie; | |
227 | if (wpa_s->sme.assoc_req_ie_len > 0 && pos[0] == WLAN_EID_RSN) | |
228 | pos += 2 + pos[1]; | |
229 | os_memmove(pos + 6, pos, | |
230 | wpa_s->sme.assoc_req_ie_len - | |
231 | (pos - wpa_s->sme.assoc_req_ie)); | |
232 | wpa_s->sme.assoc_req_ie_len += 6; | |
233 | *pos++ = WLAN_EID_EXT_CAPAB; | |
234 | *pos++ = 4; | |
235 | *pos++ = 0x00; | |
236 | *pos++ = 0x00; | |
237 | *pos++ = 0x00; | |
238 | *pos++ = 0x80; /* Bit 31 - Interworking */ | |
239 | } | |
240 | #endif /* CONFIG_INTERWORKING */ | |
241 | ||
a4cba8f1 | 242 | wpa_supplicant_cancel_sched_scan(wpa_s); |
c2a04078 JM |
243 | wpa_supplicant_cancel_scan(wpa_s); |
244 | ||
f049052b | 245 | wpa_msg(wpa_s, MSG_INFO, "SME: Trying to authenticate with " MACSTR |
c2a04078 JM |
246 | " (SSID='%s' freq=%d MHz)", MAC2STR(params.bssid), |
247 | wpa_ssid_txt(params.ssid, params.ssid_len), params.freq); | |
248 | ||
249 | wpa_clear_keys(wpa_s, bss->bssid); | |
250 | wpa_supplicant_set_state(wpa_s, WPA_AUTHENTICATING); | |
8bac466b | 251 | old_ssid = wpa_s->current_ssid; |
c2a04078 JM |
252 | wpa_s->current_ssid = ssid; |
253 | wpa_supplicant_rsn_supp_set_config(wpa_s, wpa_s->current_ssid); | |
254 | wpa_supplicant_initiate_eapol(wpa_s); | |
8bac466b JM |
255 | if (old_ssid != wpa_s->current_ssid) |
256 | wpas_notify_network_changed(wpa_s); | |
c2a04078 | 257 | |
62c72d72 | 258 | wpa_s->sme.auth_alg = params.auth_alg; |
c2a04078 | 259 | if (wpa_drv_authenticate(wpa_s, ¶ms) < 0) { |
f049052b | 260 | wpa_msg(wpa_s, MSG_INFO, "SME: Authentication request to the " |
c2a04078 | 261 | "driver failed"); |
ed57c590 | 262 | wpas_connection_failed(wpa_s, bss->bssid); |
1193dc8f | 263 | wpa_supplicant_mark_disassoc(wpa_s); |
c2a04078 JM |
264 | return; |
265 | } | |
266 | ||
e29853bb BG |
267 | eloop_register_timeout(SME_AUTH_TIMEOUT, 0, sme_auth_timer, wpa_s, |
268 | NULL); | |
c2a04078 JM |
269 | |
270 | /* | |
271 | * Association will be started based on the authentication event from | |
272 | * the driver. | |
273 | */ | |
274 | } | |
275 | ||
276 | ||
277 | void sme_event_auth(struct wpa_supplicant *wpa_s, union wpa_event_data *data) | |
278 | { | |
c2a04078 JM |
279 | struct wpa_ssid *ssid = wpa_s->current_ssid; |
280 | ||
281 | if (ssid == NULL) { | |
f049052b BG |
282 | wpa_dbg(wpa_s, MSG_DEBUG, "SME: Ignore authentication event " |
283 | "when network is not selected"); | |
c2a04078 JM |
284 | return; |
285 | } | |
286 | ||
287 | if (wpa_s->wpa_state != WPA_AUTHENTICATING) { | |
f049052b BG |
288 | wpa_dbg(wpa_s, MSG_DEBUG, "SME: Ignore authentication event " |
289 | "when not in authenticating state"); | |
c2a04078 JM |
290 | return; |
291 | } | |
292 | ||
293 | if (os_memcmp(wpa_s->pending_bssid, data->auth.peer, ETH_ALEN) != 0) { | |
f049052b BG |
294 | wpa_dbg(wpa_s, MSG_DEBUG, "SME: Ignore authentication with " |
295 | "unexpected peer " MACSTR, | |
296 | MAC2STR(data->auth.peer)); | |
c2a04078 JM |
297 | return; |
298 | } | |
299 | ||
f049052b BG |
300 | wpa_dbg(wpa_s, MSG_DEBUG, "SME: Authentication response: peer=" MACSTR |
301 | " auth_type=%d status_code=%d", | |
302 | MAC2STR(data->auth.peer), data->auth.auth_type, | |
303 | data->auth.status_code); | |
c2a04078 JM |
304 | wpa_hexdump(MSG_MSGDUMP, "SME: Authentication response IEs", |
305 | data->auth.ies, data->auth.ies_len); | |
306 | ||
e29853bb BG |
307 | eloop_cancel_timeout(sme_auth_timer, wpa_s, NULL); |
308 | ||
c2a04078 | 309 | if (data->auth.status_code != WLAN_STATUS_SUCCESS) { |
f049052b BG |
310 | wpa_dbg(wpa_s, MSG_DEBUG, "SME: Authentication failed (status " |
311 | "code %d)", data->auth.status_code); | |
cb1583f6 SO |
312 | |
313 | if (data->auth.status_code != | |
314 | WLAN_STATUS_NOT_SUPPORTED_AUTH_ALG || | |
315 | wpa_s->sme.auth_alg == data->auth.auth_type || | |
7e6646c7 | 316 | wpa_s->current_ssid->auth_alg == WPA_AUTH_ALG_LEAP) { |
0fb337c1 | 317 | wpas_connection_failed(wpa_s, wpa_s->pending_bssid); |
cb1583f6 | 318 | return; |
7e6646c7 | 319 | } |
cb1583f6 SO |
320 | |
321 | switch (data->auth.auth_type) { | |
322 | case WLAN_AUTH_OPEN: | |
323 | wpa_s->current_ssid->auth_alg = WPA_AUTH_ALG_SHARED; | |
324 | ||
f049052b | 325 | wpa_dbg(wpa_s, MSG_DEBUG, "SME: Trying SHARED auth"); |
cb1583f6 SO |
326 | wpa_supplicant_associate(wpa_s, wpa_s->current_bss, |
327 | wpa_s->current_ssid); | |
328 | return; | |
329 | ||
330 | case WLAN_AUTH_SHARED_KEY: | |
331 | wpa_s->current_ssid->auth_alg = WPA_AUTH_ALG_LEAP; | |
332 | ||
f049052b | 333 | wpa_dbg(wpa_s, MSG_DEBUG, "SME: Trying LEAP auth"); |
cb1583f6 SO |
334 | wpa_supplicant_associate(wpa_s, wpa_s->current_bss, |
335 | wpa_s->current_ssid); | |
336 | return; | |
337 | ||
338 | default: | |
339 | return; | |
340 | } | |
c2a04078 JM |
341 | } |
342 | ||
343 | #ifdef CONFIG_IEEE80211R | |
344 | if (data->auth.auth_type == WLAN_AUTH_FT) { | |
345 | union wpa_event_data edata; | |
346 | os_memset(&edata, 0, sizeof(edata)); | |
347 | edata.ft_ies.ies = data->auth.ies; | |
348 | edata.ft_ies.ies_len = data->auth.ies_len; | |
349 | os_memcpy(edata.ft_ies.target_ap, data->auth.peer, ETH_ALEN); | |
350 | wpa_supplicant_event(wpa_s, EVENT_FT_RESPONSE, &edata); | |
351 | } | |
352 | #endif /* CONFIG_IEEE80211R */ | |
353 | ||
71024cb2 JM |
354 | sme_associate(wpa_s, ssid->mode, data->auth.peer, |
355 | data->auth.auth_type); | |
356 | } | |
357 | ||
358 | ||
359 | void sme_associate(struct wpa_supplicant *wpa_s, enum wpas_mode mode, | |
360 | const u8 *bssid, u16 auth_type) | |
361 | { | |
362 | struct wpa_driver_associate_params params; | |
d9a27b04 | 363 | struct ieee802_11_elems elems; |
80e8a5ee BG |
364 | #ifdef CONFIG_HT_OVERRIDES |
365 | struct ieee80211_ht_capabilities htcaps; | |
366 | struct ieee80211_ht_capabilities htcaps_mask; | |
367 | #endif /* CONFIG_HT_OVERRIDES */ | |
71024cb2 | 368 | |
c2a04078 | 369 | os_memset(¶ms, 0, sizeof(params)); |
71024cb2 | 370 | params.bssid = bssid; |
c2a04078 JM |
371 | params.ssid = wpa_s->sme.ssid; |
372 | params.ssid_len = wpa_s->sme.ssid_len; | |
373 | params.freq = wpa_s->sme.freq; | |
1f6c0ab8 BS |
374 | params.bg_scan_period = wpa_s->current_ssid ? |
375 | wpa_s->current_ssid->bg_scan_period : -1; | |
c2a04078 JM |
376 | params.wpa_ie = wpa_s->sme.assoc_req_ie_len ? |
377 | wpa_s->sme.assoc_req_ie : NULL; | |
378 | params.wpa_ie_len = wpa_s->sme.assoc_req_ie_len; | |
aca01605 JM |
379 | params.pairwise_suite = cipher_suite2driver(wpa_s->pairwise_cipher); |
380 | params.group_suite = cipher_suite2driver(wpa_s->group_cipher); | |
80e8a5ee BG |
381 | #ifdef CONFIG_HT_OVERRIDES |
382 | os_memset(&htcaps, 0, sizeof(htcaps)); | |
383 | os_memset(&htcaps_mask, 0, sizeof(htcaps_mask)); | |
384 | params.htcaps = (u8 *) &htcaps; | |
385 | params.htcaps_mask = (u8 *) &htcaps_mask; | |
386 | wpa_supplicant_apply_ht_overrides(wpa_s, wpa_s->current_ssid, ¶ms); | |
387 | #endif /* CONFIG_HT_OVERRIDES */ | |
c2a04078 | 388 | #ifdef CONFIG_IEEE80211R |
71024cb2 | 389 | if (auth_type == WLAN_AUTH_FT && wpa_s->sme.ft_ies) { |
c2a04078 JM |
390 | params.wpa_ie = wpa_s->sme.ft_ies; |
391 | params.wpa_ie_len = wpa_s->sme.ft_ies_len; | |
392 | } | |
393 | #endif /* CONFIG_IEEE80211R */ | |
71024cb2 | 394 | params.mode = mode; |
c2a04078 | 395 | params.mgmt_frame_protection = wpa_s->sme.mfp; |
62fa124c JM |
396 | if (wpa_s->sme.prev_bssid_set) |
397 | params.prev_bssid = wpa_s->sme.prev_bssid; | |
c2a04078 JM |
398 | |
399 | wpa_msg(wpa_s, MSG_INFO, "Trying to associate with " MACSTR | |
400 | " (SSID='%s' freq=%d MHz)", MAC2STR(params.bssid), | |
401 | params.ssid ? wpa_ssid_txt(params.ssid, params.ssid_len) : "", | |
402 | params.freq); | |
403 | ||
404 | wpa_supplicant_set_state(wpa_s, WPA_ASSOCIATING); | |
405 | ||
9efc3f2a JM |
406 | if (params.wpa_ie == NULL || |
407 | ieee802_11_parse_elems(params.wpa_ie, params.wpa_ie_len, &elems, 0) | |
d9a27b04 | 408 | < 0) { |
f049052b | 409 | wpa_dbg(wpa_s, MSG_DEBUG, "SME: Could not parse own IEs?!"); |
d9a27b04 JM |
410 | os_memset(&elems, 0, sizeof(elems)); |
411 | } | |
64fa840a JM |
412 | if (elems.rsn_ie) { |
413 | params.wpa_proto = WPA_PROTO_RSN; | |
d9a27b04 JM |
414 | wpa_sm_set_assoc_wpa_ie(wpa_s->wpa, elems.rsn_ie - 2, |
415 | elems.rsn_ie_len + 2); | |
64fa840a JM |
416 | } else if (elems.wpa_ie) { |
417 | params.wpa_proto = WPA_PROTO_WPA; | |
d9a27b04 JM |
418 | wpa_sm_set_assoc_wpa_ie(wpa_s->wpa, elems.wpa_ie - 2, |
419 | elems.wpa_ie_len + 2); | |
64fa840a | 420 | } else |
d9a27b04 | 421 | wpa_sm_set_assoc_wpa_ie(wpa_s->wpa, NULL, 0); |
ffad8858 | 422 | if (wpa_s->current_ssid && wpa_s->current_ssid->p2p_group) |
6e3f4b89 | 423 | params.p2p = 1; |
d9a27b04 | 424 | |
eea2fd9e JM |
425 | if (wpa_s->parent->set_sta_uapsd) |
426 | params.uapsd = wpa_s->parent->sta_uapsd; | |
427 | else | |
428 | params.uapsd = -1; | |
429 | ||
c2a04078 | 430 | if (wpa_drv_associate(wpa_s, ¶ms) < 0) { |
f049052b BG |
431 | wpa_msg(wpa_s, MSG_INFO, "SME: Association request to the " |
432 | "driver failed"); | |
e5ad96b7 JM |
433 | wpas_connection_failed(wpa_s, wpa_s->pending_bssid); |
434 | os_memset(wpa_s->pending_bssid, 0, ETH_ALEN); | |
c2a04078 JM |
435 | return; |
436 | } | |
437 | ||
e29853bb BG |
438 | eloop_register_timeout(SME_ASSOC_TIMEOUT, 0, sme_assoc_timer, wpa_s, |
439 | NULL); | |
c2a04078 JM |
440 | } |
441 | ||
442 | ||
443 | int sme_update_ft_ies(struct wpa_supplicant *wpa_s, const u8 *md, | |
444 | const u8 *ies, size_t ies_len) | |
445 | { | |
446 | if (md == NULL || ies == NULL) { | |
f049052b | 447 | wpa_dbg(wpa_s, MSG_DEBUG, "SME: Remove mobility domain"); |
c2a04078 JM |
448 | os_free(wpa_s->sme.ft_ies); |
449 | wpa_s->sme.ft_ies = NULL; | |
450 | wpa_s->sme.ft_ies_len = 0; | |
451 | wpa_s->sme.ft_used = 0; | |
452 | return 0; | |
453 | } | |
454 | ||
455 | os_memcpy(wpa_s->sme.mobility_domain, md, MOBILITY_DOMAIN_ID_LEN); | |
456 | wpa_hexdump(MSG_DEBUG, "SME: FT IEs", ies, ies_len); | |
457 | os_free(wpa_s->sme.ft_ies); | |
458 | wpa_s->sme.ft_ies = os_malloc(ies_len); | |
459 | if (wpa_s->sme.ft_ies == NULL) | |
460 | return -1; | |
461 | os_memcpy(wpa_s->sme.ft_ies, ies, ies_len); | |
462 | wpa_s->sme.ft_ies_len = ies_len; | |
463 | return 0; | |
464 | } | |
efa46078 JM |
465 | |
466 | ||
e29853bb | 467 | static void sme_deauth(struct wpa_supplicant *wpa_s) |
efa46078 | 468 | { |
8bac466b JM |
469 | int bssid_changed; |
470 | ||
8bac466b | 471 | bssid_changed = !is_zero_ether_addr(wpa_s->bssid); |
76d11d3f | 472 | |
76d11d3f JM |
473 | if (wpa_drv_deauthenticate(wpa_s, wpa_s->pending_bssid, |
474 | WLAN_REASON_DEAUTH_LEAVING) < 0) { | |
f049052b BG |
475 | wpa_msg(wpa_s, MSG_INFO, "SME: Deauth request to the driver " |
476 | "failed"); | |
76d11d3f | 477 | } |
62fa124c | 478 | wpa_s->sme.prev_bssid_set = 0; |
76d11d3f | 479 | |
0fb337c1 | 480 | wpas_connection_failed(wpa_s, wpa_s->pending_bssid); |
76d11d3f | 481 | wpa_supplicant_set_state(wpa_s, WPA_DISCONNECTED); |
efa46078 JM |
482 | os_memset(wpa_s->bssid, 0, ETH_ALEN); |
483 | os_memset(wpa_s->pending_bssid, 0, ETH_ALEN); | |
8bac466b JM |
484 | if (bssid_changed) |
485 | wpas_notify_bssid_changed(wpa_s); | |
efa46078 | 486 | } |
da1fb17c JM |
487 | |
488 | ||
e29853bb BG |
489 | void sme_event_assoc_reject(struct wpa_supplicant *wpa_s, |
490 | union wpa_event_data *data) | |
491 | { | |
492 | wpa_dbg(wpa_s, MSG_DEBUG, "SME: Association with " MACSTR " failed: " | |
493 | "status code %d", MAC2STR(wpa_s->pending_bssid), | |
494 | data->assoc_reject.status_code); | |
495 | ||
496 | eloop_cancel_timeout(sme_assoc_timer, wpa_s, NULL); | |
497 | ||
498 | /* | |
499 | * For now, unconditionally terminate the previous authentication. In | |
500 | * theory, this should not be needed, but mac80211 gets quite confused | |
501 | * if the authentication is left pending.. Some roaming cases might | |
502 | * benefit from using the previous authentication, so this could be | |
503 | * optimized in the future. | |
504 | */ | |
505 | sme_deauth(wpa_s); | |
506 | } | |
507 | ||
508 | ||
da1fb17c JM |
509 | void sme_event_auth_timed_out(struct wpa_supplicant *wpa_s, |
510 | union wpa_event_data *data) | |
511 | { | |
f049052b | 512 | wpa_dbg(wpa_s, MSG_DEBUG, "SME: Authentication timed out"); |
0fb337c1 | 513 | wpas_connection_failed(wpa_s, wpa_s->pending_bssid); |
1193dc8f | 514 | wpa_supplicant_mark_disassoc(wpa_s); |
da1fb17c JM |
515 | } |
516 | ||
517 | ||
518 | void sme_event_assoc_timed_out(struct wpa_supplicant *wpa_s, | |
519 | union wpa_event_data *data) | |
520 | { | |
f049052b | 521 | wpa_dbg(wpa_s, MSG_DEBUG, "SME: Association timed out"); |
0fb337c1 | 522 | wpas_connection_failed(wpa_s, wpa_s->pending_bssid); |
da1fb17c | 523 | wpa_supplicant_mark_disassoc(wpa_s); |
da1fb17c | 524 | } |
a84ed99e JM |
525 | |
526 | ||
527 | void sme_event_disassoc(struct wpa_supplicant *wpa_s, | |
528 | union wpa_event_data *data) | |
529 | { | |
f049052b | 530 | wpa_dbg(wpa_s, MSG_DEBUG, "SME: Disassociation event received"); |
17fbb751 | 531 | if (wpa_s->sme.prev_bssid_set) { |
a84ed99e JM |
532 | /* |
533 | * cfg80211/mac80211 can get into somewhat confused state if | |
534 | * the AP only disassociates us and leaves us in authenticated | |
535 | * state. For now, force the state to be cleared to avoid | |
536 | * confusing errors if we try to associate with the AP again. | |
537 | */ | |
f049052b BG |
538 | wpa_dbg(wpa_s, MSG_DEBUG, "SME: Deauthenticate to clear " |
539 | "driver state"); | |
7e26053a | 540 | wpa_drv_deauthenticate(wpa_s, wpa_s->sme.prev_bssid, |
a84ed99e JM |
541 | WLAN_REASON_DEAUTH_LEAVING); |
542 | } | |
543 | } | |
7d878ca7 JM |
544 | |
545 | ||
e29853bb BG |
546 | static void sme_auth_timer(void *eloop_ctx, void *timeout_ctx) |
547 | { | |
548 | struct wpa_supplicant *wpa_s = eloop_ctx; | |
549 | if (wpa_s->wpa_state == WPA_AUTHENTICATING) { | |
550 | wpa_msg(wpa_s, MSG_DEBUG, "SME: Authentication timeout"); | |
551 | sme_deauth(wpa_s); | |
552 | } | |
553 | } | |
554 | ||
555 | ||
556 | static void sme_assoc_timer(void *eloop_ctx, void *timeout_ctx) | |
557 | { | |
558 | struct wpa_supplicant *wpa_s = eloop_ctx; | |
559 | if (wpa_s->wpa_state == WPA_ASSOCIATING) { | |
560 | wpa_msg(wpa_s, MSG_DEBUG, "SME: Association timeout"); | |
561 | sme_deauth(wpa_s); | |
562 | } | |
563 | } | |
564 | ||
565 | ||
566 | void sme_state_changed(struct wpa_supplicant *wpa_s) | |
567 | { | |
568 | /* Make sure timers are cleaned up appropriately. */ | |
569 | if (wpa_s->wpa_state != WPA_ASSOCIATING) | |
570 | eloop_cancel_timeout(sme_assoc_timer, wpa_s, NULL); | |
571 | if (wpa_s->wpa_state != WPA_AUTHENTICATING) | |
572 | eloop_cancel_timeout(sme_auth_timer, wpa_s, NULL); | |
573 | } | |
574 | ||
575 | ||
576 | void sme_disassoc_while_authenticating(struct wpa_supplicant *wpa_s, | |
577 | const u8 *prev_pending_bssid) | |
578 | { | |
579 | /* | |
580 | * mac80211-workaround to force deauth on failed auth cmd, | |
581 | * requires us to remain in authenticating state to allow the | |
582 | * second authentication attempt to be continued properly. | |
583 | */ | |
584 | wpa_dbg(wpa_s, MSG_DEBUG, "SME: Allow pending authentication " | |
585 | "to proceed after disconnection event"); | |
586 | wpa_supplicant_set_state(wpa_s, WPA_AUTHENTICATING); | |
587 | os_memcpy(wpa_s->pending_bssid, prev_pending_bssid, ETH_ALEN); | |
588 | ||
589 | /* | |
590 | * Re-arm authentication timer in case auth fails for whatever reason. | |
591 | */ | |
592 | eloop_cancel_timeout(sme_auth_timer, wpa_s, NULL); | |
593 | eloop_register_timeout(SME_AUTH_TIMEOUT, 0, sme_auth_timer, wpa_s, | |
594 | NULL); | |
595 | } | |
596 | ||
597 | ||
598 | void sme_deinit(struct wpa_supplicant *wpa_s) | |
599 | { | |
600 | os_free(wpa_s->sme.ft_ies); | |
601 | wpa_s->sme.ft_ies = NULL; | |
602 | wpa_s->sme.ft_ies_len = 0; | |
603 | #ifdef CONFIG_IEEE80211W | |
604 | sme_stop_sa_query(wpa_s); | |
605 | #endif /* CONFIG_IEEE80211W */ | |
606 | ||
607 | eloop_cancel_timeout(sme_assoc_timer, wpa_s, NULL); | |
608 | eloop_cancel_timeout(sme_auth_timer, wpa_s, NULL); | |
609 | } | |
610 | ||
611 | ||
7d878ca7 JM |
612 | #ifdef CONFIG_IEEE80211W |
613 | ||
614 | static const unsigned int sa_query_max_timeout = 1000; | |
615 | static const unsigned int sa_query_retry_timeout = 201; | |
616 | ||
617 | static int sme_check_sa_query_timeout(struct wpa_supplicant *wpa_s) | |
618 | { | |
619 | u32 tu; | |
620 | struct os_time now, passed; | |
621 | os_get_time(&now); | |
622 | os_time_sub(&now, &wpa_s->sme.sa_query_start, &passed); | |
623 | tu = (passed.sec * 1000000 + passed.usec) / 1024; | |
624 | if (sa_query_max_timeout < tu) { | |
f049052b | 625 | wpa_dbg(wpa_s, MSG_DEBUG, "SME: SA Query timed out"); |
7d878ca7 JM |
626 | sme_stop_sa_query(wpa_s); |
627 | wpa_supplicant_deauthenticate( | |
628 | wpa_s, WLAN_REASON_PREV_AUTH_NOT_VALID); | |
629 | return 1; | |
630 | } | |
631 | ||
632 | return 0; | |
633 | } | |
634 | ||
635 | ||
636 | static void sme_send_sa_query_req(struct wpa_supplicant *wpa_s, | |
637 | const u8 *trans_id) | |
638 | { | |
639 | u8 req[2 + WLAN_SA_QUERY_TR_ID_LEN]; | |
f049052b BG |
640 | wpa_dbg(wpa_s, MSG_DEBUG, "SME: Sending SA Query Request to " |
641 | MACSTR, MAC2STR(wpa_s->bssid)); | |
7d878ca7 JM |
642 | wpa_hexdump(MSG_DEBUG, "SME: SA Query Transaction ID", |
643 | trans_id, WLAN_SA_QUERY_TR_ID_LEN); | |
644 | req[0] = WLAN_ACTION_SA_QUERY; | |
645 | req[1] = WLAN_SA_QUERY_REQUEST; | |
646 | os_memcpy(req + 2, trans_id, WLAN_SA_QUERY_TR_ID_LEN); | |
190b9062 | 647 | if (wpa_drv_send_action(wpa_s, wpa_s->assoc_freq, 0, wpa_s->bssid, |
7d878ca7 | 648 | wpa_s->own_addr, wpa_s->bssid, |
b106173a | 649 | req, sizeof(req), 0) < 0) |
f049052b BG |
650 | wpa_msg(wpa_s, MSG_INFO, "SME: Failed to send SA Query " |
651 | "Request"); | |
7d878ca7 JM |
652 | } |
653 | ||
654 | ||
655 | static void sme_sa_query_timer(void *eloop_ctx, void *timeout_ctx) | |
656 | { | |
657 | struct wpa_supplicant *wpa_s = eloop_ctx; | |
658 | unsigned int timeout, sec, usec; | |
659 | u8 *trans_id, *nbuf; | |
660 | ||
661 | if (wpa_s->sme.sa_query_count > 0 && | |
662 | sme_check_sa_query_timeout(wpa_s)) | |
663 | return; | |
664 | ||
665 | nbuf = os_realloc(wpa_s->sme.sa_query_trans_id, | |
666 | (wpa_s->sme.sa_query_count + 1) * | |
667 | WLAN_SA_QUERY_TR_ID_LEN); | |
668 | if (nbuf == NULL) | |
669 | return; | |
670 | if (wpa_s->sme.sa_query_count == 0) { | |
671 | /* Starting a new SA Query procedure */ | |
672 | os_get_time(&wpa_s->sme.sa_query_start); | |
673 | } | |
674 | trans_id = nbuf + wpa_s->sme.sa_query_count * WLAN_SA_QUERY_TR_ID_LEN; | |
675 | wpa_s->sme.sa_query_trans_id = nbuf; | |
676 | wpa_s->sme.sa_query_count++; | |
677 | ||
678 | os_get_random(trans_id, WLAN_SA_QUERY_TR_ID_LEN); | |
679 | ||
680 | timeout = sa_query_retry_timeout; | |
681 | sec = ((timeout / 1000) * 1024) / 1000; | |
682 | usec = (timeout % 1000) * 1024; | |
683 | eloop_register_timeout(sec, usec, sme_sa_query_timer, wpa_s, NULL); | |
684 | ||
f049052b BG |
685 | wpa_dbg(wpa_s, MSG_DEBUG, "SME: Association SA Query attempt %d", |
686 | wpa_s->sme.sa_query_count); | |
7d878ca7 JM |
687 | |
688 | sme_send_sa_query_req(wpa_s, trans_id); | |
689 | } | |
690 | ||
691 | ||
692 | static void sme_start_sa_query(struct wpa_supplicant *wpa_s) | |
693 | { | |
694 | sme_sa_query_timer(wpa_s, NULL); | |
695 | } | |
696 | ||
697 | ||
19df9b07 | 698 | static void sme_stop_sa_query(struct wpa_supplicant *wpa_s) |
7d878ca7 JM |
699 | { |
700 | eloop_cancel_timeout(sme_sa_query_timer, wpa_s, NULL); | |
701 | os_free(wpa_s->sme.sa_query_trans_id); | |
702 | wpa_s->sme.sa_query_trans_id = NULL; | |
703 | wpa_s->sme.sa_query_count = 0; | |
704 | } | |
705 | ||
706 | ||
707 | void sme_event_unprot_disconnect(struct wpa_supplicant *wpa_s, const u8 *sa, | |
708 | const u8 *da, u16 reason_code) | |
709 | { | |
710 | struct wpa_ssid *ssid; | |
711 | ||
712 | if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME)) | |
713 | return; | |
714 | if (wpa_s->wpa_state != WPA_COMPLETED) | |
715 | return; | |
716 | ssid = wpa_s->current_ssid; | |
717 | if (ssid == NULL || ssid->ieee80211w == 0) | |
718 | return; | |
719 | if (os_memcmp(sa, wpa_s->bssid, ETH_ALEN) != 0) | |
720 | return; | |
721 | if (reason_code != WLAN_REASON_CLASS2_FRAME_FROM_NONAUTH_STA && | |
722 | reason_code != WLAN_REASON_CLASS3_FRAME_FROM_NONASSOC_STA) | |
723 | return; | |
724 | if (wpa_s->sme.sa_query_count > 0) | |
725 | return; | |
726 | ||
f049052b BG |
727 | wpa_dbg(wpa_s, MSG_DEBUG, "SME: Unprotected disconnect dropped - " |
728 | "possible AP/STA state mismatch - trigger SA Query"); | |
7d878ca7 JM |
729 | sme_start_sa_query(wpa_s); |
730 | } | |
731 | ||
732 | ||
733 | void sme_sa_query_rx(struct wpa_supplicant *wpa_s, const u8 *sa, | |
734 | const u8 *data, size_t len) | |
735 | { | |
736 | int i; | |
737 | ||
738 | if (wpa_s->sme.sa_query_trans_id == NULL || | |
739 | len < 1 + WLAN_SA_QUERY_TR_ID_LEN || | |
740 | data[0] != WLAN_SA_QUERY_RESPONSE) | |
741 | return; | |
f049052b BG |
742 | wpa_dbg(wpa_s, MSG_DEBUG, "SME: Received SA Query response from " |
743 | MACSTR " (trans_id %02x%02x)", MAC2STR(sa), data[1], data[2]); | |
7d878ca7 JM |
744 | |
745 | if (os_memcmp(sa, wpa_s->bssid, ETH_ALEN) != 0) | |
746 | return; | |
747 | ||
748 | for (i = 0; i < wpa_s->sme.sa_query_count; i++) { | |
749 | if (os_memcmp(wpa_s->sme.sa_query_trans_id + | |
750 | i * WLAN_SA_QUERY_TR_ID_LEN, | |
751 | data + 1, WLAN_SA_QUERY_TR_ID_LEN) == 0) | |
752 | break; | |
753 | } | |
754 | ||
755 | if (i >= wpa_s->sme.sa_query_count) { | |
f049052b BG |
756 | wpa_dbg(wpa_s, MSG_DEBUG, "SME: No matching SA Query " |
757 | "transaction identifier found"); | |
7d878ca7 JM |
758 | return; |
759 | } | |
760 | ||
f049052b BG |
761 | wpa_dbg(wpa_s, MSG_DEBUG, "SME: Reply to pending SA Query received " |
762 | "from " MACSTR, MAC2STR(sa)); | |
7d878ca7 JM |
763 | sme_stop_sa_query(wpa_s); |
764 | } | |
765 | ||
766 | #endif /* CONFIG_IEEE80211W */ |