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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 JM |
4 | * |
5 | * This program is free software; you can redistribute it and/or modify | |
6 | * it under the terms of the GNU General Public License version 2 as | |
7 | * published by the Free Software Foundation. | |
8 | * | |
9 | * Alternatively, this software may be distributed under the terms of BSD | |
10 | * license. | |
11 | * | |
12 | * See README and COPYING for more details. | |
13 | */ | |
14 | ||
15 | #include "includes.h" | |
16 | ||
17 | #include "common.h" | |
7d878ca7 | 18 | #include "utils/eloop.h" |
90973fb2 | 19 | #include "common/ieee802_11_defs.h" |
d9a27b04 | 20 | #include "common/ieee802_11_common.h" |
c2a04078 | 21 | #include "eapol_supp/eapol_supp_sm.h" |
90973fb2 | 22 | #include "common/wpa_common.h" |
3acb5005 JM |
23 | #include "rsn_supp/wpa.h" |
24 | #include "rsn_supp/pmksa_cache.h" | |
c2a04078 JM |
25 | #include "config.h" |
26 | #include "wpa_supplicant_i.h" | |
2d5b792d | 27 | #include "driver_i.h" |
c2a04078 JM |
28 | #include "wpas_glue.h" |
29 | #include "wps_supplicant.h" | |
5f3a6aa0 | 30 | #include "p2p_supplicant.h" |
8bac466b | 31 | #include "notify.h" |
6fa81a3b | 32 | #include "bss.h" |
9ba9fa07 | 33 | #include "scan.h" |
c2a04078 JM |
34 | #include "sme.h" |
35 | ||
e29853bb BG |
36 | #define SME_AUTH_TIMEOUT 5 |
37 | #define SME_ASSOC_TIMEOUT 5 | |
38 | ||
39 | static void sme_auth_timer(void *eloop_ctx, void *timeout_ctx); | |
40 | static void sme_assoc_timer(void *eloop_ctx, void *timeout_ctx); | |
41 | #ifdef CONFIG_IEEE80211W | |
42 | static void sme_stop_sa_query(struct wpa_supplicant *wpa_s); | |
43 | #endif /* CONFIG_IEEE80211W */ | |
44 | ||
45 | ||
c2a04078 | 46 | void sme_authenticate(struct wpa_supplicant *wpa_s, |
6fa81a3b | 47 | struct wpa_bss *bss, struct wpa_ssid *ssid) |
c2a04078 JM |
48 | { |
49 | struct wpa_driver_auth_params params; | |
8bac466b | 50 | struct wpa_ssid *old_ssid; |
fdbe50ed | 51 | #ifdef CONFIG_IEEE80211R |
c2a04078 | 52 | const u8 *ie; |
fdbe50ed | 53 | #endif /* CONFIG_IEEE80211R */ |
c2a04078 JM |
54 | #ifdef CONFIG_IEEE80211R |
55 | const u8 *md = NULL; | |
56 | #endif /* CONFIG_IEEE80211R */ | |
8bac466b | 57 | int i, bssid_changed; |
c2a04078 JM |
58 | |
59 | if (bss == NULL) { | |
f049052b BG |
60 | wpa_msg(wpa_s, MSG_ERROR, "SME: No scan result available for " |
61 | "the network"); | |
c2a04078 JM |
62 | return; |
63 | } | |
64 | ||
8f770587 JM |
65 | wpa_s->current_bss = bss; |
66 | ||
c2a04078 JM |
67 | os_memset(¶ms, 0, sizeof(params)); |
68 | wpa_s->reassociate = 0; | |
69 | ||
70 | params.freq = bss->freq; | |
71 | params.bssid = bss->bssid; | |
6fa81a3b JM |
72 | params.ssid = bss->ssid; |
73 | params.ssid_len = bss->ssid_len; | |
2f4f73b1 | 74 | params.p2p = ssid->p2p_group; |
c2a04078 | 75 | |
62fa124c JM |
76 | if (wpa_s->sme.ssid_len != params.ssid_len || |
77 | os_memcmp(wpa_s->sme.ssid, params.ssid, params.ssid_len) != 0) | |
78 | wpa_s->sme.prev_bssid_set = 0; | |
79 | ||
c2a04078 JM |
80 | wpa_s->sme.freq = params.freq; |
81 | os_memcpy(wpa_s->sme.ssid, params.ssid, params.ssid_len); | |
82 | wpa_s->sme.ssid_len = params.ssid_len; | |
83 | ||
abd9fafa | 84 | params.auth_alg = WPA_AUTH_ALG_OPEN; |
c2a04078 JM |
85 | #ifdef IEEE8021X_EAPOL |
86 | if (ssid->key_mgmt & WPA_KEY_MGMT_IEEE8021X_NO_WPA) { | |
87 | if (ssid->leap) { | |
88 | if (ssid->non_leap == 0) | |
abd9fafa | 89 | params.auth_alg = WPA_AUTH_ALG_LEAP; |
c2a04078 | 90 | else |
abd9fafa | 91 | params.auth_alg |= WPA_AUTH_ALG_LEAP; |
c2a04078 JM |
92 | } |
93 | } | |
94 | #endif /* IEEE8021X_EAPOL */ | |
f049052b BG |
95 | wpa_dbg(wpa_s, MSG_DEBUG, "Automatic auth_alg selection: 0x%x", |
96 | params.auth_alg); | |
c2a04078 | 97 | if (ssid->auth_alg) { |
abd9fafa | 98 | params.auth_alg = ssid->auth_alg; |
f049052b BG |
99 | wpa_dbg(wpa_s, MSG_DEBUG, "Overriding auth_alg selection: " |
100 | "0x%x", params.auth_alg); | |
c2a04078 JM |
101 | } |
102 | ||
a0b2f99b JM |
103 | for (i = 0; i < NUM_WEP_KEYS; i++) { |
104 | if (ssid->wep_key_len[i]) | |
105 | params.wep_key[i] = ssid->wep_key[i]; | |
106 | params.wep_key_len[i] = ssid->wep_key_len[i]; | |
107 | } | |
108 | params.wep_tx_keyidx = ssid->wep_tx_keyidx; | |
109 | ||
8bac466b | 110 | bssid_changed = !is_zero_ether_addr(wpa_s->bssid); |
c2a04078 JM |
111 | os_memset(wpa_s->bssid, 0, ETH_ALEN); |
112 | os_memcpy(wpa_s->pending_bssid, bss->bssid, ETH_ALEN); | |
8bac466b JM |
113 | if (bssid_changed) |
114 | wpas_notify_bssid_changed(wpa_s); | |
c2a04078 | 115 | |
f337f0e9 JM |
116 | if ((wpa_bss_get_vendor_ie(bss, WPA_IE_VENDOR_TYPE) || |
117 | wpa_bss_get_ie(bss, WLAN_EID_RSN)) && | |
0bf927a0 | 118 | wpa_key_mgmt_wpa(ssid->key_mgmt)) { |
c2a04078 JM |
119 | int try_opportunistic; |
120 | try_opportunistic = ssid->proactive_key_caching && | |
121 | (ssid->proto & WPA_PROTO_RSN); | |
122 | if (pmksa_cache_set_current(wpa_s->wpa, NULL, bss->bssid, | |
123 | wpa_s->current_ssid, | |
124 | try_opportunistic) == 0) | |
125 | eapol_sm_notify_pmkid_attempt(wpa_s->eapol, 1); | |
126 | wpa_s->sme.assoc_req_ie_len = sizeof(wpa_s->sme.assoc_req_ie); | |
127 | if (wpa_supplicant_set_suites(wpa_s, bss, ssid, | |
128 | wpa_s->sme.assoc_req_ie, | |
129 | &wpa_s->sme.assoc_req_ie_len)) { | |
f049052b BG |
130 | wpa_msg(wpa_s, MSG_WARNING, "SME: Failed to set WPA " |
131 | "key management and encryption suites"); | |
c2a04078 JM |
132 | return; |
133 | } | |
0bf927a0 | 134 | } else if (wpa_key_mgmt_wpa_any(ssid->key_mgmt)) { |
c2a04078 JM |
135 | wpa_s->sme.assoc_req_ie_len = sizeof(wpa_s->sme.assoc_req_ie); |
136 | if (wpa_supplicant_set_suites(wpa_s, NULL, ssid, | |
137 | wpa_s->sme.assoc_req_ie, | |
138 | &wpa_s->sme.assoc_req_ie_len)) { | |
f049052b BG |
139 | wpa_msg(wpa_s, MSG_WARNING, "SME: Failed to set WPA " |
140 | "key management and encryption suites (no " | |
141 | "scan results)"); | |
c2a04078 JM |
142 | return; |
143 | } | |
144 | #ifdef CONFIG_WPS | |
145 | } else if (ssid->key_mgmt & WPA_KEY_MGMT_WPS) { | |
146 | struct wpabuf *wps_ie; | |
147 | wps_ie = wps_build_assoc_req_ie(wpas_wps_get_req_type(ssid)); | |
148 | if (wps_ie && wpabuf_len(wps_ie) <= | |
149 | sizeof(wpa_s->sme.assoc_req_ie)) { | |
150 | wpa_s->sme.assoc_req_ie_len = wpabuf_len(wps_ie); | |
151 | os_memcpy(wpa_s->sme.assoc_req_ie, wpabuf_head(wps_ie), | |
152 | wpa_s->sme.assoc_req_ie_len); | |
153 | } else | |
154 | wpa_s->sme.assoc_req_ie_len = 0; | |
155 | wpabuf_free(wps_ie); | |
156 | wpa_supplicant_set_non_wpa_policy(wpa_s, ssid); | |
157 | #endif /* CONFIG_WPS */ | |
158 | } else { | |
159 | wpa_supplicant_set_non_wpa_policy(wpa_s, ssid); | |
160 | wpa_s->sme.assoc_req_ie_len = 0; | |
161 | } | |
162 | ||
163 | #ifdef CONFIG_IEEE80211R | |
6fa81a3b | 164 | ie = wpa_bss_get_ie(bss, WLAN_EID_MOBILITY_DOMAIN); |
c2a04078 JM |
165 | if (ie && ie[1] >= MOBILITY_DOMAIN_ID_LEN) |
166 | md = ie + 2; | |
e7846b68 | 167 | wpa_sm_set_ft_params(wpa_s->wpa, ie, ie ? 2 + ie[1] : 0); |
c2a04078 JM |
168 | if (md) { |
169 | /* Prepare for the next transition */ | |
76b7981d | 170 | wpa_ft_prepare_auth_request(wpa_s->wpa, ie); |
c2a04078 JM |
171 | } |
172 | ||
0bf927a0 | 173 | if (md && wpa_key_mgmt_ft(ssid->key_mgmt)) { |
c2a04078 JM |
174 | if (wpa_s->sme.assoc_req_ie_len + 5 < |
175 | sizeof(wpa_s->sme.assoc_req_ie)) { | |
176 | struct rsn_mdie *mdie; | |
177 | u8 *pos = wpa_s->sme.assoc_req_ie + | |
178 | wpa_s->sme.assoc_req_ie_len; | |
179 | *pos++ = WLAN_EID_MOBILITY_DOMAIN; | |
180 | *pos++ = sizeof(*mdie); | |
181 | mdie = (struct rsn_mdie *) pos; | |
182 | os_memcpy(mdie->mobility_domain, md, | |
183 | MOBILITY_DOMAIN_ID_LEN); | |
f4ec630d | 184 | mdie->ft_capab = md[MOBILITY_DOMAIN_ID_LEN]; |
c2a04078 JM |
185 | wpa_s->sme.assoc_req_ie_len += 5; |
186 | } | |
187 | ||
188 | if (wpa_s->sme.ft_used && | |
0d7b4409 JM |
189 | os_memcmp(md, wpa_s->sme.mobility_domain, 2) == 0 && |
190 | wpa_sm_has_ptk(wpa_s->wpa)) { | |
f049052b BG |
191 | wpa_dbg(wpa_s, MSG_DEBUG, "SME: Trying to use FT " |
192 | "over-the-air"); | |
abd9fafa | 193 | params.auth_alg = WPA_AUTH_ALG_FT; |
c2a04078 JM |
194 | params.ie = wpa_s->sme.ft_ies; |
195 | params.ie_len = wpa_s->sme.ft_ies_len; | |
196 | } | |
197 | } | |
198 | #endif /* CONFIG_IEEE80211R */ | |
199 | ||
200 | #ifdef CONFIG_IEEE80211W | |
70f8cc8e | 201 | wpa_s->sme.mfp = ssid->ieee80211w; |
f337f0e9 | 202 | if (ssid->ieee80211w != NO_MGMT_FRAME_PROTECTION) { |
6fa81a3b | 203 | const u8 *rsn = wpa_bss_get_ie(bss, WLAN_EID_RSN); |
c2a04078 JM |
204 | struct wpa_ie_data _ie; |
205 | if (rsn && wpa_parse_wpa_ie(rsn, 2 + rsn[1], &_ie) == 0 && | |
206 | _ie.capabilities & | |
207 | (WPA_CAPABILITY_MFPC | WPA_CAPABILITY_MFPR)) { | |
f049052b BG |
208 | wpa_dbg(wpa_s, MSG_DEBUG, "SME: Selected AP supports " |
209 | "MFP: require MFP"); | |
c2a04078 JM |
210 | wpa_s->sme.mfp = MGMT_FRAME_PROTECTION_REQUIRED; |
211 | } | |
212 | } | |
213 | #endif /* CONFIG_IEEE80211W */ | |
214 | ||
5f3a6aa0 JM |
215 | #ifdef CONFIG_P2P |
216 | if (wpa_s->global->p2p) { | |
217 | u8 *pos; | |
218 | size_t len; | |
219 | int res; | |
5f3a6aa0 JM |
220 | pos = wpa_s->sme.assoc_req_ie + wpa_s->sme.assoc_req_ie_len; |
221 | len = sizeof(wpa_s->sme.assoc_req_ie) - | |
222 | wpa_s->sme.assoc_req_ie_len; | |
ffad8858 JM |
223 | res = wpas_p2p_assoc_req_ie(wpa_s, bss, pos, len, |
224 | ssid->p2p_group); | |
5f3a6aa0 JM |
225 | if (res >= 0) |
226 | wpa_s->sme.assoc_req_ie_len += res; | |
227 | } | |
228 | #endif /* CONFIG_P2P */ | |
229 | ||
92cbcf91 JM |
230 | #ifdef CONFIG_INTERWORKING |
231 | if (wpa_s->conf->interworking) { | |
232 | u8 *pos = wpa_s->sme.assoc_req_ie; | |
233 | if (wpa_s->sme.assoc_req_ie_len > 0 && pos[0] == WLAN_EID_RSN) | |
234 | pos += 2 + pos[1]; | |
235 | os_memmove(pos + 6, pos, | |
236 | wpa_s->sme.assoc_req_ie_len - | |
237 | (pos - wpa_s->sme.assoc_req_ie)); | |
238 | wpa_s->sme.assoc_req_ie_len += 6; | |
239 | *pos++ = WLAN_EID_EXT_CAPAB; | |
240 | *pos++ = 4; | |
241 | *pos++ = 0x00; | |
242 | *pos++ = 0x00; | |
243 | *pos++ = 0x00; | |
244 | *pos++ = 0x80; /* Bit 31 - Interworking */ | |
245 | } | |
246 | #endif /* CONFIG_INTERWORKING */ | |
247 | ||
a4cba8f1 | 248 | wpa_supplicant_cancel_sched_scan(wpa_s); |
c2a04078 JM |
249 | wpa_supplicant_cancel_scan(wpa_s); |
250 | ||
f049052b | 251 | wpa_msg(wpa_s, MSG_INFO, "SME: Trying to authenticate with " MACSTR |
c2a04078 JM |
252 | " (SSID='%s' freq=%d MHz)", MAC2STR(params.bssid), |
253 | wpa_ssid_txt(params.ssid, params.ssid_len), params.freq); | |
254 | ||
255 | wpa_clear_keys(wpa_s, bss->bssid); | |
256 | wpa_supplicant_set_state(wpa_s, WPA_AUTHENTICATING); | |
8bac466b | 257 | old_ssid = wpa_s->current_ssid; |
c2a04078 JM |
258 | wpa_s->current_ssid = ssid; |
259 | wpa_supplicant_rsn_supp_set_config(wpa_s, wpa_s->current_ssid); | |
260 | wpa_supplicant_initiate_eapol(wpa_s); | |
8bac466b JM |
261 | if (old_ssid != wpa_s->current_ssid) |
262 | wpas_notify_network_changed(wpa_s); | |
c2a04078 | 263 | |
62c72d72 | 264 | wpa_s->sme.auth_alg = params.auth_alg; |
c2a04078 | 265 | if (wpa_drv_authenticate(wpa_s, ¶ms) < 0) { |
f049052b | 266 | wpa_msg(wpa_s, MSG_INFO, "SME: Authentication request to the " |
c2a04078 | 267 | "driver failed"); |
ed57c590 JM |
268 | wpa_supplicant_set_state(wpa_s, WPA_DISCONNECTED); |
269 | wpas_connection_failed(wpa_s, bss->bssid); | |
c2a04078 JM |
270 | return; |
271 | } | |
272 | ||
e29853bb BG |
273 | eloop_register_timeout(SME_AUTH_TIMEOUT, 0, sme_auth_timer, wpa_s, |
274 | NULL); | |
c2a04078 JM |
275 | |
276 | /* | |
277 | * Association will be started based on the authentication event from | |
278 | * the driver. | |
279 | */ | |
280 | } | |
281 | ||
282 | ||
283 | void sme_event_auth(struct wpa_supplicant *wpa_s, union wpa_event_data *data) | |
284 | { | |
c2a04078 JM |
285 | struct wpa_ssid *ssid = wpa_s->current_ssid; |
286 | ||
287 | if (ssid == NULL) { | |
f049052b BG |
288 | wpa_dbg(wpa_s, MSG_DEBUG, "SME: Ignore authentication event " |
289 | "when network is not selected"); | |
c2a04078 JM |
290 | return; |
291 | } | |
292 | ||
293 | if (wpa_s->wpa_state != WPA_AUTHENTICATING) { | |
f049052b BG |
294 | wpa_dbg(wpa_s, MSG_DEBUG, "SME: Ignore authentication event " |
295 | "when not in authenticating state"); | |
c2a04078 JM |
296 | return; |
297 | } | |
298 | ||
299 | if (os_memcmp(wpa_s->pending_bssid, data->auth.peer, ETH_ALEN) != 0) { | |
f049052b BG |
300 | wpa_dbg(wpa_s, MSG_DEBUG, "SME: Ignore authentication with " |
301 | "unexpected peer " MACSTR, | |
302 | MAC2STR(data->auth.peer)); | |
c2a04078 JM |
303 | return; |
304 | } | |
305 | ||
f049052b BG |
306 | wpa_dbg(wpa_s, MSG_DEBUG, "SME: Authentication response: peer=" MACSTR |
307 | " auth_type=%d status_code=%d", | |
308 | MAC2STR(data->auth.peer), data->auth.auth_type, | |
309 | data->auth.status_code); | |
c2a04078 JM |
310 | wpa_hexdump(MSG_MSGDUMP, "SME: Authentication response IEs", |
311 | data->auth.ies, data->auth.ies_len); | |
312 | ||
e29853bb BG |
313 | eloop_cancel_timeout(sme_auth_timer, wpa_s, NULL); |
314 | ||
c2a04078 | 315 | if (data->auth.status_code != WLAN_STATUS_SUCCESS) { |
f049052b BG |
316 | wpa_dbg(wpa_s, MSG_DEBUG, "SME: Authentication failed (status " |
317 | "code %d)", data->auth.status_code); | |
cb1583f6 SO |
318 | |
319 | if (data->auth.status_code != | |
320 | WLAN_STATUS_NOT_SUPPORTED_AUTH_ALG || | |
321 | wpa_s->sme.auth_alg == data->auth.auth_type || | |
7e6646c7 | 322 | wpa_s->current_ssid->auth_alg == WPA_AUTH_ALG_LEAP) { |
0fb337c1 | 323 | wpas_connection_failed(wpa_s, wpa_s->pending_bssid); |
cb1583f6 | 324 | return; |
7e6646c7 | 325 | } |
cb1583f6 SO |
326 | |
327 | switch (data->auth.auth_type) { | |
328 | case WLAN_AUTH_OPEN: | |
329 | wpa_s->current_ssid->auth_alg = WPA_AUTH_ALG_SHARED; | |
330 | ||
f049052b | 331 | wpa_dbg(wpa_s, MSG_DEBUG, "SME: Trying SHARED auth"); |
cb1583f6 SO |
332 | wpa_supplicant_associate(wpa_s, wpa_s->current_bss, |
333 | wpa_s->current_ssid); | |
334 | return; | |
335 | ||
336 | case WLAN_AUTH_SHARED_KEY: | |
337 | wpa_s->current_ssid->auth_alg = WPA_AUTH_ALG_LEAP; | |
338 | ||
f049052b | 339 | wpa_dbg(wpa_s, MSG_DEBUG, "SME: Trying LEAP auth"); |
cb1583f6 SO |
340 | wpa_supplicant_associate(wpa_s, wpa_s->current_bss, |
341 | wpa_s->current_ssid); | |
342 | return; | |
343 | ||
344 | default: | |
345 | return; | |
346 | } | |
c2a04078 JM |
347 | } |
348 | ||
349 | #ifdef CONFIG_IEEE80211R | |
350 | if (data->auth.auth_type == WLAN_AUTH_FT) { | |
351 | union wpa_event_data edata; | |
352 | os_memset(&edata, 0, sizeof(edata)); | |
353 | edata.ft_ies.ies = data->auth.ies; | |
354 | edata.ft_ies.ies_len = data->auth.ies_len; | |
355 | os_memcpy(edata.ft_ies.target_ap, data->auth.peer, ETH_ALEN); | |
356 | wpa_supplicant_event(wpa_s, EVENT_FT_RESPONSE, &edata); | |
357 | } | |
358 | #endif /* CONFIG_IEEE80211R */ | |
359 | ||
71024cb2 JM |
360 | sme_associate(wpa_s, ssid->mode, data->auth.peer, |
361 | data->auth.auth_type); | |
362 | } | |
363 | ||
364 | ||
365 | void sme_associate(struct wpa_supplicant *wpa_s, enum wpas_mode mode, | |
366 | const u8 *bssid, u16 auth_type) | |
367 | { | |
368 | struct wpa_driver_associate_params params; | |
d9a27b04 | 369 | struct ieee802_11_elems elems; |
71024cb2 | 370 | |
c2a04078 | 371 | os_memset(¶ms, 0, sizeof(params)); |
71024cb2 | 372 | params.bssid = bssid; |
c2a04078 JM |
373 | params.ssid = wpa_s->sme.ssid; |
374 | params.ssid_len = wpa_s->sme.ssid_len; | |
375 | params.freq = wpa_s->sme.freq; | |
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); | |
c2a04078 | 381 | #ifdef CONFIG_IEEE80211R |
71024cb2 | 382 | if (auth_type == WLAN_AUTH_FT && wpa_s->sme.ft_ies) { |
c2a04078 JM |
383 | params.wpa_ie = wpa_s->sme.ft_ies; |
384 | params.wpa_ie_len = wpa_s->sme.ft_ies_len; | |
385 | } | |
386 | #endif /* CONFIG_IEEE80211R */ | |
71024cb2 | 387 | params.mode = mode; |
c2a04078 | 388 | params.mgmt_frame_protection = wpa_s->sme.mfp; |
62fa124c JM |
389 | if (wpa_s->sme.prev_bssid_set) |
390 | params.prev_bssid = wpa_s->sme.prev_bssid; | |
c2a04078 JM |
391 | |
392 | wpa_msg(wpa_s, MSG_INFO, "Trying to associate with " MACSTR | |
393 | " (SSID='%s' freq=%d MHz)", MAC2STR(params.bssid), | |
394 | params.ssid ? wpa_ssid_txt(params.ssid, params.ssid_len) : "", | |
395 | params.freq); | |
396 | ||
397 | wpa_supplicant_set_state(wpa_s, WPA_ASSOCIATING); | |
398 | ||
9efc3f2a JM |
399 | if (params.wpa_ie == NULL || |
400 | ieee802_11_parse_elems(params.wpa_ie, params.wpa_ie_len, &elems, 0) | |
d9a27b04 | 401 | < 0) { |
f049052b | 402 | wpa_dbg(wpa_s, MSG_DEBUG, "SME: Could not parse own IEs?!"); |
d9a27b04 JM |
403 | os_memset(&elems, 0, sizeof(elems)); |
404 | } | |
64fa840a JM |
405 | if (elems.rsn_ie) { |
406 | params.wpa_proto = WPA_PROTO_RSN; | |
d9a27b04 JM |
407 | wpa_sm_set_assoc_wpa_ie(wpa_s->wpa, elems.rsn_ie - 2, |
408 | elems.rsn_ie_len + 2); | |
64fa840a JM |
409 | } else if (elems.wpa_ie) { |
410 | params.wpa_proto = WPA_PROTO_WPA; | |
d9a27b04 JM |
411 | wpa_sm_set_assoc_wpa_ie(wpa_s->wpa, elems.wpa_ie - 2, |
412 | elems.wpa_ie_len + 2); | |
64fa840a | 413 | } else |
d9a27b04 | 414 | wpa_sm_set_assoc_wpa_ie(wpa_s->wpa, NULL, 0); |
ffad8858 | 415 | if (wpa_s->current_ssid && wpa_s->current_ssid->p2p_group) |
6e3f4b89 | 416 | params.p2p = 1; |
d9a27b04 | 417 | |
eea2fd9e JM |
418 | if (wpa_s->parent->set_sta_uapsd) |
419 | params.uapsd = wpa_s->parent->sta_uapsd; | |
420 | else | |
421 | params.uapsd = -1; | |
422 | ||
c2a04078 | 423 | if (wpa_drv_associate(wpa_s, ¶ms) < 0) { |
f049052b BG |
424 | wpa_msg(wpa_s, MSG_INFO, "SME: Association request to the " |
425 | "driver failed"); | |
e5ad96b7 JM |
426 | wpas_connection_failed(wpa_s, wpa_s->pending_bssid); |
427 | os_memset(wpa_s->pending_bssid, 0, ETH_ALEN); | |
c2a04078 JM |
428 | return; |
429 | } | |
430 | ||
e29853bb BG |
431 | eloop_register_timeout(SME_ASSOC_TIMEOUT, 0, sme_assoc_timer, wpa_s, |
432 | NULL); | |
c2a04078 JM |
433 | } |
434 | ||
435 | ||
436 | int sme_update_ft_ies(struct wpa_supplicant *wpa_s, const u8 *md, | |
437 | const u8 *ies, size_t ies_len) | |
438 | { | |
439 | if (md == NULL || ies == NULL) { | |
f049052b | 440 | wpa_dbg(wpa_s, MSG_DEBUG, "SME: Remove mobility domain"); |
c2a04078 JM |
441 | os_free(wpa_s->sme.ft_ies); |
442 | wpa_s->sme.ft_ies = NULL; | |
443 | wpa_s->sme.ft_ies_len = 0; | |
444 | wpa_s->sme.ft_used = 0; | |
445 | return 0; | |
446 | } | |
447 | ||
448 | os_memcpy(wpa_s->sme.mobility_domain, md, MOBILITY_DOMAIN_ID_LEN); | |
449 | wpa_hexdump(MSG_DEBUG, "SME: FT IEs", ies, ies_len); | |
450 | os_free(wpa_s->sme.ft_ies); | |
451 | wpa_s->sme.ft_ies = os_malloc(ies_len); | |
452 | if (wpa_s->sme.ft_ies == NULL) | |
453 | return -1; | |
454 | os_memcpy(wpa_s->sme.ft_ies, ies, ies_len); | |
455 | wpa_s->sme.ft_ies_len = ies_len; | |
456 | return 0; | |
457 | } | |
efa46078 JM |
458 | |
459 | ||
e29853bb | 460 | static void sme_deauth(struct wpa_supplicant *wpa_s) |
efa46078 | 461 | { |
8bac466b JM |
462 | int bssid_changed; |
463 | ||
8bac466b | 464 | bssid_changed = !is_zero_ether_addr(wpa_s->bssid); |
76d11d3f | 465 | |
76d11d3f JM |
466 | if (wpa_drv_deauthenticate(wpa_s, wpa_s->pending_bssid, |
467 | WLAN_REASON_DEAUTH_LEAVING) < 0) { | |
f049052b BG |
468 | wpa_msg(wpa_s, MSG_INFO, "SME: Deauth request to the driver " |
469 | "failed"); | |
76d11d3f | 470 | } |
62fa124c | 471 | wpa_s->sme.prev_bssid_set = 0; |
76d11d3f | 472 | |
0fb337c1 | 473 | wpas_connection_failed(wpa_s, wpa_s->pending_bssid); |
76d11d3f | 474 | wpa_supplicant_set_state(wpa_s, WPA_DISCONNECTED); |
efa46078 JM |
475 | os_memset(wpa_s->bssid, 0, ETH_ALEN); |
476 | os_memset(wpa_s->pending_bssid, 0, ETH_ALEN); | |
8bac466b JM |
477 | if (bssid_changed) |
478 | wpas_notify_bssid_changed(wpa_s); | |
efa46078 | 479 | } |
da1fb17c JM |
480 | |
481 | ||
e29853bb BG |
482 | void sme_event_assoc_reject(struct wpa_supplicant *wpa_s, |
483 | union wpa_event_data *data) | |
484 | { | |
485 | wpa_dbg(wpa_s, MSG_DEBUG, "SME: Association with " MACSTR " failed: " | |
486 | "status code %d", MAC2STR(wpa_s->pending_bssid), | |
487 | data->assoc_reject.status_code); | |
488 | ||
489 | eloop_cancel_timeout(sme_assoc_timer, wpa_s, NULL); | |
490 | ||
491 | /* | |
492 | * For now, unconditionally terminate the previous authentication. In | |
493 | * theory, this should not be needed, but mac80211 gets quite confused | |
494 | * if the authentication is left pending.. Some roaming cases might | |
495 | * benefit from using the previous authentication, so this could be | |
496 | * optimized in the future. | |
497 | */ | |
498 | sme_deauth(wpa_s); | |
499 | } | |
500 | ||
501 | ||
da1fb17c JM |
502 | void sme_event_auth_timed_out(struct wpa_supplicant *wpa_s, |
503 | union wpa_event_data *data) | |
504 | { | |
f049052b | 505 | wpa_dbg(wpa_s, MSG_DEBUG, "SME: Authentication timed out"); |
14115a10 | 506 | wpa_supplicant_set_state(wpa_s, WPA_DISCONNECTED); |
0fb337c1 | 507 | wpas_connection_failed(wpa_s, wpa_s->pending_bssid); |
da1fb17c JM |
508 | } |
509 | ||
510 | ||
511 | void sme_event_assoc_timed_out(struct wpa_supplicant *wpa_s, | |
512 | union wpa_event_data *data) | |
513 | { | |
f049052b | 514 | wpa_dbg(wpa_s, MSG_DEBUG, "SME: Association timed out"); |
0fb337c1 | 515 | wpas_connection_failed(wpa_s, wpa_s->pending_bssid); |
da1fb17c | 516 | wpa_supplicant_mark_disassoc(wpa_s); |
da1fb17c | 517 | } |
a84ed99e JM |
518 | |
519 | ||
520 | void sme_event_disassoc(struct wpa_supplicant *wpa_s, | |
521 | union wpa_event_data *data) | |
522 | { | |
f049052b | 523 | wpa_dbg(wpa_s, MSG_DEBUG, "SME: Disassociation event received"); |
17fbb751 | 524 | if (wpa_s->sme.prev_bssid_set) { |
a84ed99e JM |
525 | /* |
526 | * cfg80211/mac80211 can get into somewhat confused state if | |
527 | * the AP only disassociates us and leaves us in authenticated | |
528 | * state. For now, force the state to be cleared to avoid | |
529 | * confusing errors if we try to associate with the AP again. | |
530 | */ | |
f049052b BG |
531 | wpa_dbg(wpa_s, MSG_DEBUG, "SME: Deauthenticate to clear " |
532 | "driver state"); | |
7e26053a | 533 | wpa_drv_deauthenticate(wpa_s, wpa_s->sme.prev_bssid, |
a84ed99e JM |
534 | WLAN_REASON_DEAUTH_LEAVING); |
535 | } | |
536 | } | |
7d878ca7 JM |
537 | |
538 | ||
e29853bb BG |
539 | static void sme_auth_timer(void *eloop_ctx, void *timeout_ctx) |
540 | { | |
541 | struct wpa_supplicant *wpa_s = eloop_ctx; | |
542 | if (wpa_s->wpa_state == WPA_AUTHENTICATING) { | |
543 | wpa_msg(wpa_s, MSG_DEBUG, "SME: Authentication timeout"); | |
544 | sme_deauth(wpa_s); | |
545 | } | |
546 | } | |
547 | ||
548 | ||
549 | static void sme_assoc_timer(void *eloop_ctx, void *timeout_ctx) | |
550 | { | |
551 | struct wpa_supplicant *wpa_s = eloop_ctx; | |
552 | if (wpa_s->wpa_state == WPA_ASSOCIATING) { | |
553 | wpa_msg(wpa_s, MSG_DEBUG, "SME: Association timeout"); | |
554 | sme_deauth(wpa_s); | |
555 | } | |
556 | } | |
557 | ||
558 | ||
559 | void sme_state_changed(struct wpa_supplicant *wpa_s) | |
560 | { | |
561 | /* Make sure timers are cleaned up appropriately. */ | |
562 | if (wpa_s->wpa_state != WPA_ASSOCIATING) | |
563 | eloop_cancel_timeout(sme_assoc_timer, wpa_s, NULL); | |
564 | if (wpa_s->wpa_state != WPA_AUTHENTICATING) | |
565 | eloop_cancel_timeout(sme_auth_timer, wpa_s, NULL); | |
566 | } | |
567 | ||
568 | ||
569 | void sme_disassoc_while_authenticating(struct wpa_supplicant *wpa_s, | |
570 | const u8 *prev_pending_bssid) | |
571 | { | |
572 | /* | |
573 | * mac80211-workaround to force deauth on failed auth cmd, | |
574 | * requires us to remain in authenticating state to allow the | |
575 | * second authentication attempt to be continued properly. | |
576 | */ | |
577 | wpa_dbg(wpa_s, MSG_DEBUG, "SME: Allow pending authentication " | |
578 | "to proceed after disconnection event"); | |
579 | wpa_supplicant_set_state(wpa_s, WPA_AUTHENTICATING); | |
580 | os_memcpy(wpa_s->pending_bssid, prev_pending_bssid, ETH_ALEN); | |
581 | ||
582 | /* | |
583 | * Re-arm authentication timer in case auth fails for whatever reason. | |
584 | */ | |
585 | eloop_cancel_timeout(sme_auth_timer, wpa_s, NULL); | |
586 | eloop_register_timeout(SME_AUTH_TIMEOUT, 0, sme_auth_timer, wpa_s, | |
587 | NULL); | |
588 | } | |
589 | ||
590 | ||
591 | void sme_deinit(struct wpa_supplicant *wpa_s) | |
592 | { | |
593 | os_free(wpa_s->sme.ft_ies); | |
594 | wpa_s->sme.ft_ies = NULL; | |
595 | wpa_s->sme.ft_ies_len = 0; | |
596 | #ifdef CONFIG_IEEE80211W | |
597 | sme_stop_sa_query(wpa_s); | |
598 | #endif /* CONFIG_IEEE80211W */ | |
599 | ||
600 | eloop_cancel_timeout(sme_assoc_timer, wpa_s, NULL); | |
601 | eloop_cancel_timeout(sme_auth_timer, wpa_s, NULL); | |
602 | } | |
603 | ||
604 | ||
7d878ca7 JM |
605 | #ifdef CONFIG_IEEE80211W |
606 | ||
607 | static const unsigned int sa_query_max_timeout = 1000; | |
608 | static const unsigned int sa_query_retry_timeout = 201; | |
609 | ||
610 | static int sme_check_sa_query_timeout(struct wpa_supplicant *wpa_s) | |
611 | { | |
612 | u32 tu; | |
613 | struct os_time now, passed; | |
614 | os_get_time(&now); | |
615 | os_time_sub(&now, &wpa_s->sme.sa_query_start, &passed); | |
616 | tu = (passed.sec * 1000000 + passed.usec) / 1024; | |
617 | if (sa_query_max_timeout < tu) { | |
f049052b | 618 | wpa_dbg(wpa_s, MSG_DEBUG, "SME: SA Query timed out"); |
7d878ca7 JM |
619 | sme_stop_sa_query(wpa_s); |
620 | wpa_supplicant_deauthenticate( | |
621 | wpa_s, WLAN_REASON_PREV_AUTH_NOT_VALID); | |
622 | return 1; | |
623 | } | |
624 | ||
625 | return 0; | |
626 | } | |
627 | ||
628 | ||
629 | static void sme_send_sa_query_req(struct wpa_supplicant *wpa_s, | |
630 | const u8 *trans_id) | |
631 | { | |
632 | u8 req[2 + WLAN_SA_QUERY_TR_ID_LEN]; | |
f049052b BG |
633 | wpa_dbg(wpa_s, MSG_DEBUG, "SME: Sending SA Query Request to " |
634 | MACSTR, MAC2STR(wpa_s->bssid)); | |
7d878ca7 JM |
635 | wpa_hexdump(MSG_DEBUG, "SME: SA Query Transaction ID", |
636 | trans_id, WLAN_SA_QUERY_TR_ID_LEN); | |
637 | req[0] = WLAN_ACTION_SA_QUERY; | |
638 | req[1] = WLAN_SA_QUERY_REQUEST; | |
639 | os_memcpy(req + 2, trans_id, WLAN_SA_QUERY_TR_ID_LEN); | |
190b9062 | 640 | if (wpa_drv_send_action(wpa_s, wpa_s->assoc_freq, 0, wpa_s->bssid, |
7d878ca7 | 641 | wpa_s->own_addr, wpa_s->bssid, |
b106173a | 642 | req, sizeof(req), 0) < 0) |
f049052b BG |
643 | wpa_msg(wpa_s, MSG_INFO, "SME: Failed to send SA Query " |
644 | "Request"); | |
7d878ca7 JM |
645 | } |
646 | ||
647 | ||
648 | static void sme_sa_query_timer(void *eloop_ctx, void *timeout_ctx) | |
649 | { | |
650 | struct wpa_supplicant *wpa_s = eloop_ctx; | |
651 | unsigned int timeout, sec, usec; | |
652 | u8 *trans_id, *nbuf; | |
653 | ||
654 | if (wpa_s->sme.sa_query_count > 0 && | |
655 | sme_check_sa_query_timeout(wpa_s)) | |
656 | return; | |
657 | ||
658 | nbuf = os_realloc(wpa_s->sme.sa_query_trans_id, | |
659 | (wpa_s->sme.sa_query_count + 1) * | |
660 | WLAN_SA_QUERY_TR_ID_LEN); | |
661 | if (nbuf == NULL) | |
662 | return; | |
663 | if (wpa_s->sme.sa_query_count == 0) { | |
664 | /* Starting a new SA Query procedure */ | |
665 | os_get_time(&wpa_s->sme.sa_query_start); | |
666 | } | |
667 | trans_id = nbuf + wpa_s->sme.sa_query_count * WLAN_SA_QUERY_TR_ID_LEN; | |
668 | wpa_s->sme.sa_query_trans_id = nbuf; | |
669 | wpa_s->sme.sa_query_count++; | |
670 | ||
671 | os_get_random(trans_id, WLAN_SA_QUERY_TR_ID_LEN); | |
672 | ||
673 | timeout = sa_query_retry_timeout; | |
674 | sec = ((timeout / 1000) * 1024) / 1000; | |
675 | usec = (timeout % 1000) * 1024; | |
676 | eloop_register_timeout(sec, usec, sme_sa_query_timer, wpa_s, NULL); | |
677 | ||
f049052b BG |
678 | wpa_dbg(wpa_s, MSG_DEBUG, "SME: Association SA Query attempt %d", |
679 | wpa_s->sme.sa_query_count); | |
7d878ca7 JM |
680 | |
681 | sme_send_sa_query_req(wpa_s, trans_id); | |
682 | } | |
683 | ||
684 | ||
685 | static void sme_start_sa_query(struct wpa_supplicant *wpa_s) | |
686 | { | |
687 | sme_sa_query_timer(wpa_s, NULL); | |
688 | } | |
689 | ||
690 | ||
19df9b07 | 691 | static void sme_stop_sa_query(struct wpa_supplicant *wpa_s) |
7d878ca7 JM |
692 | { |
693 | eloop_cancel_timeout(sme_sa_query_timer, wpa_s, NULL); | |
694 | os_free(wpa_s->sme.sa_query_trans_id); | |
695 | wpa_s->sme.sa_query_trans_id = NULL; | |
696 | wpa_s->sme.sa_query_count = 0; | |
697 | } | |
698 | ||
699 | ||
700 | void sme_event_unprot_disconnect(struct wpa_supplicant *wpa_s, const u8 *sa, | |
701 | const u8 *da, u16 reason_code) | |
702 | { | |
703 | struct wpa_ssid *ssid; | |
704 | ||
705 | if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME)) | |
706 | return; | |
707 | if (wpa_s->wpa_state != WPA_COMPLETED) | |
708 | return; | |
709 | ssid = wpa_s->current_ssid; | |
710 | if (ssid == NULL || ssid->ieee80211w == 0) | |
711 | return; | |
712 | if (os_memcmp(sa, wpa_s->bssid, ETH_ALEN) != 0) | |
713 | return; | |
714 | if (reason_code != WLAN_REASON_CLASS2_FRAME_FROM_NONAUTH_STA && | |
715 | reason_code != WLAN_REASON_CLASS3_FRAME_FROM_NONASSOC_STA) | |
716 | return; | |
717 | if (wpa_s->sme.sa_query_count > 0) | |
718 | return; | |
719 | ||
f049052b BG |
720 | wpa_dbg(wpa_s, MSG_DEBUG, "SME: Unprotected disconnect dropped - " |
721 | "possible AP/STA state mismatch - trigger SA Query"); | |
7d878ca7 JM |
722 | sme_start_sa_query(wpa_s); |
723 | } | |
724 | ||
725 | ||
726 | void sme_sa_query_rx(struct wpa_supplicant *wpa_s, const u8 *sa, | |
727 | const u8 *data, size_t len) | |
728 | { | |
729 | int i; | |
730 | ||
731 | if (wpa_s->sme.sa_query_trans_id == NULL || | |
732 | len < 1 + WLAN_SA_QUERY_TR_ID_LEN || | |
733 | data[0] != WLAN_SA_QUERY_RESPONSE) | |
734 | return; | |
f049052b BG |
735 | wpa_dbg(wpa_s, MSG_DEBUG, "SME: Received SA Query response from " |
736 | MACSTR " (trans_id %02x%02x)", MAC2STR(sa), data[1], data[2]); | |
7d878ca7 JM |
737 | |
738 | if (os_memcmp(sa, wpa_s->bssid, ETH_ALEN) != 0) | |
739 | return; | |
740 | ||
741 | for (i = 0; i < wpa_s->sme.sa_query_count; i++) { | |
742 | if (os_memcmp(wpa_s->sme.sa_query_trans_id + | |
743 | i * WLAN_SA_QUERY_TR_ID_LEN, | |
744 | data + 1, WLAN_SA_QUERY_TR_ID_LEN) == 0) | |
745 | break; | |
746 | } | |
747 | ||
748 | if (i >= wpa_s->sme.sa_query_count) { | |
f049052b BG |
749 | wpa_dbg(wpa_s, MSG_DEBUG, "SME: No matching SA Query " |
750 | "transaction identifier found"); | |
7d878ca7 JM |
751 | return; |
752 | } | |
753 | ||
f049052b BG |
754 | wpa_dbg(wpa_s, MSG_DEBUG, "SME: Reply to pending SA Query received " |
755 | "from " MACSTR, MAC2STR(sa)); | |
7d878ca7 JM |
756 | sme_stop_sa_query(wpa_s); |
757 | } | |
758 | ||
759 | #endif /* CONFIG_IEEE80211W */ |