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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" |
76d11d3f | 32 | #include "blacklist.h" |
6fa81a3b | 33 | #include "bss.h" |
9ba9fa07 | 34 | #include "scan.h" |
c2a04078 JM |
35 | #include "sme.h" |
36 | ||
e29853bb BG |
37 | #define SME_AUTH_TIMEOUT 5 |
38 | #define SME_ASSOC_TIMEOUT 5 | |
39 | ||
40 | static void sme_auth_timer(void *eloop_ctx, void *timeout_ctx); | |
41 | static void sme_assoc_timer(void *eloop_ctx, void *timeout_ctx); | |
42 | #ifdef CONFIG_IEEE80211W | |
43 | static void sme_stop_sa_query(struct wpa_supplicant *wpa_s); | |
44 | #endif /* CONFIG_IEEE80211W */ | |
45 | ||
46 | ||
c2a04078 | 47 | void sme_authenticate(struct wpa_supplicant *wpa_s, |
6fa81a3b | 48 | struct wpa_bss *bss, struct wpa_ssid *ssid) |
c2a04078 JM |
49 | { |
50 | struct wpa_driver_auth_params params; | |
8bac466b | 51 | struct wpa_ssid *old_ssid; |
fdbe50ed | 52 | #ifdef CONFIG_IEEE80211R |
c2a04078 | 53 | const u8 *ie; |
fdbe50ed | 54 | #endif /* CONFIG_IEEE80211R */ |
c2a04078 JM |
55 | #ifdef CONFIG_IEEE80211R |
56 | const u8 *md = NULL; | |
57 | #endif /* CONFIG_IEEE80211R */ | |
8bac466b | 58 | int i, bssid_changed; |
c2a04078 JM |
59 | |
60 | if (bss == NULL) { | |
f049052b BG |
61 | wpa_msg(wpa_s, MSG_ERROR, "SME: No scan result available for " |
62 | "the network"); | |
c2a04078 JM |
63 | return; |
64 | } | |
65 | ||
8f770587 JM |
66 | wpa_s->current_bss = bss; |
67 | ||
c2a04078 JM |
68 | os_memset(¶ms, 0, sizeof(params)); |
69 | wpa_s->reassociate = 0; | |
70 | ||
71 | params.freq = bss->freq; | |
72 | params.bssid = bss->bssid; | |
6fa81a3b JM |
73 | params.ssid = bss->ssid; |
74 | params.ssid_len = bss->ssid_len; | |
2f4f73b1 | 75 | params.p2p = ssid->p2p_group; |
c2a04078 | 76 | |
62fa124c JM |
77 | if (wpa_s->sme.ssid_len != params.ssid_len || |
78 | os_memcmp(wpa_s->sme.ssid, params.ssid, params.ssid_len) != 0) | |
79 | wpa_s->sme.prev_bssid_set = 0; | |
80 | ||
c2a04078 JM |
81 | wpa_s->sme.freq = params.freq; |
82 | os_memcpy(wpa_s->sme.ssid, params.ssid, params.ssid_len); | |
83 | wpa_s->sme.ssid_len = params.ssid_len; | |
84 | ||
abd9fafa | 85 | params.auth_alg = WPA_AUTH_ALG_OPEN; |
c2a04078 JM |
86 | #ifdef IEEE8021X_EAPOL |
87 | if (ssid->key_mgmt & WPA_KEY_MGMT_IEEE8021X_NO_WPA) { | |
88 | if (ssid->leap) { | |
89 | if (ssid->non_leap == 0) | |
abd9fafa | 90 | params.auth_alg = WPA_AUTH_ALG_LEAP; |
c2a04078 | 91 | else |
abd9fafa | 92 | params.auth_alg |= WPA_AUTH_ALG_LEAP; |
c2a04078 JM |
93 | } |
94 | } | |
95 | #endif /* IEEE8021X_EAPOL */ | |
f049052b BG |
96 | wpa_dbg(wpa_s, MSG_DEBUG, "Automatic auth_alg selection: 0x%x", |
97 | params.auth_alg); | |
c2a04078 | 98 | if (ssid->auth_alg) { |
abd9fafa | 99 | params.auth_alg = ssid->auth_alg; |
f049052b BG |
100 | wpa_dbg(wpa_s, MSG_DEBUG, "Overriding auth_alg selection: " |
101 | "0x%x", params.auth_alg); | |
c2a04078 JM |
102 | } |
103 | ||
a0b2f99b JM |
104 | for (i = 0; i < NUM_WEP_KEYS; i++) { |
105 | if (ssid->wep_key_len[i]) | |
106 | params.wep_key[i] = ssid->wep_key[i]; | |
107 | params.wep_key_len[i] = ssid->wep_key_len[i]; | |
108 | } | |
109 | params.wep_tx_keyidx = ssid->wep_tx_keyidx; | |
110 | ||
8bac466b | 111 | bssid_changed = !is_zero_ether_addr(wpa_s->bssid); |
c2a04078 JM |
112 | os_memset(wpa_s->bssid, 0, ETH_ALEN); |
113 | os_memcpy(wpa_s->pending_bssid, bss->bssid, ETH_ALEN); | |
8bac466b JM |
114 | if (bssid_changed) |
115 | wpas_notify_bssid_changed(wpa_s); | |
c2a04078 | 116 | |
f337f0e9 JM |
117 | if ((wpa_bss_get_vendor_ie(bss, WPA_IE_VENDOR_TYPE) || |
118 | wpa_bss_get_ie(bss, WLAN_EID_RSN)) && | |
c2a04078 JM |
119 | (ssid->key_mgmt & (WPA_KEY_MGMT_IEEE8021X | WPA_KEY_MGMT_PSK | |
120 | WPA_KEY_MGMT_FT_IEEE8021X | | |
121 | WPA_KEY_MGMT_FT_PSK | | |
122 | WPA_KEY_MGMT_IEEE8021X_SHA256 | | |
123 | WPA_KEY_MGMT_PSK_SHA256))) { | |
124 | int try_opportunistic; | |
125 | try_opportunistic = ssid->proactive_key_caching && | |
126 | (ssid->proto & WPA_PROTO_RSN); | |
127 | if (pmksa_cache_set_current(wpa_s->wpa, NULL, bss->bssid, | |
128 | wpa_s->current_ssid, | |
129 | try_opportunistic) == 0) | |
130 | eapol_sm_notify_pmkid_attempt(wpa_s->eapol, 1); | |
131 | wpa_s->sme.assoc_req_ie_len = sizeof(wpa_s->sme.assoc_req_ie); | |
132 | if (wpa_supplicant_set_suites(wpa_s, bss, ssid, | |
133 | wpa_s->sme.assoc_req_ie, | |
134 | &wpa_s->sme.assoc_req_ie_len)) { | |
f049052b BG |
135 | wpa_msg(wpa_s, MSG_WARNING, "SME: Failed to set WPA " |
136 | "key management and encryption suites"); | |
c2a04078 JM |
137 | return; |
138 | } | |
139 | } else if (ssid->key_mgmt & | |
140 | (WPA_KEY_MGMT_PSK | WPA_KEY_MGMT_IEEE8021X | | |
141 | WPA_KEY_MGMT_WPA_NONE | WPA_KEY_MGMT_FT_PSK | | |
142 | WPA_KEY_MGMT_FT_IEEE8021X | WPA_KEY_MGMT_PSK_SHA256 | | |
143 | WPA_KEY_MGMT_IEEE8021X_SHA256)) { | |
144 | wpa_s->sme.assoc_req_ie_len = sizeof(wpa_s->sme.assoc_req_ie); | |
145 | if (wpa_supplicant_set_suites(wpa_s, NULL, ssid, | |
146 | wpa_s->sme.assoc_req_ie, | |
147 | &wpa_s->sme.assoc_req_ie_len)) { | |
f049052b BG |
148 | wpa_msg(wpa_s, MSG_WARNING, "SME: Failed to set WPA " |
149 | "key management and encryption suites (no " | |
150 | "scan results)"); | |
c2a04078 JM |
151 | return; |
152 | } | |
153 | #ifdef CONFIG_WPS | |
154 | } else if (ssid->key_mgmt & WPA_KEY_MGMT_WPS) { | |
155 | struct wpabuf *wps_ie; | |
156 | wps_ie = wps_build_assoc_req_ie(wpas_wps_get_req_type(ssid)); | |
157 | if (wps_ie && wpabuf_len(wps_ie) <= | |
158 | sizeof(wpa_s->sme.assoc_req_ie)) { | |
159 | wpa_s->sme.assoc_req_ie_len = wpabuf_len(wps_ie); | |
160 | os_memcpy(wpa_s->sme.assoc_req_ie, wpabuf_head(wps_ie), | |
161 | wpa_s->sme.assoc_req_ie_len); | |
162 | } else | |
163 | wpa_s->sme.assoc_req_ie_len = 0; | |
164 | wpabuf_free(wps_ie); | |
165 | wpa_supplicant_set_non_wpa_policy(wpa_s, ssid); | |
166 | #endif /* CONFIG_WPS */ | |
167 | } else { | |
168 | wpa_supplicant_set_non_wpa_policy(wpa_s, ssid); | |
169 | wpa_s->sme.assoc_req_ie_len = 0; | |
170 | } | |
171 | ||
172 | #ifdef CONFIG_IEEE80211R | |
6fa81a3b | 173 | ie = wpa_bss_get_ie(bss, WLAN_EID_MOBILITY_DOMAIN); |
c2a04078 JM |
174 | if (ie && ie[1] >= MOBILITY_DOMAIN_ID_LEN) |
175 | md = ie + 2; | |
e7846b68 | 176 | wpa_sm_set_ft_params(wpa_s->wpa, ie, ie ? 2 + ie[1] : 0); |
c2a04078 JM |
177 | if (md) { |
178 | /* Prepare for the next transition */ | |
76b7981d | 179 | wpa_ft_prepare_auth_request(wpa_s->wpa, ie); |
c2a04078 JM |
180 | } |
181 | ||
182 | if (md && ssid->key_mgmt & (WPA_KEY_MGMT_FT_PSK | | |
183 | WPA_KEY_MGMT_FT_IEEE8021X)) { | |
184 | if (wpa_s->sme.assoc_req_ie_len + 5 < | |
185 | sizeof(wpa_s->sme.assoc_req_ie)) { | |
186 | struct rsn_mdie *mdie; | |
187 | u8 *pos = wpa_s->sme.assoc_req_ie + | |
188 | wpa_s->sme.assoc_req_ie_len; | |
189 | *pos++ = WLAN_EID_MOBILITY_DOMAIN; | |
190 | *pos++ = sizeof(*mdie); | |
191 | mdie = (struct rsn_mdie *) pos; | |
192 | os_memcpy(mdie->mobility_domain, md, | |
193 | MOBILITY_DOMAIN_ID_LEN); | |
f4ec630d | 194 | mdie->ft_capab = md[MOBILITY_DOMAIN_ID_LEN]; |
c2a04078 JM |
195 | wpa_s->sme.assoc_req_ie_len += 5; |
196 | } | |
197 | ||
198 | if (wpa_s->sme.ft_used && | |
0d7b4409 JM |
199 | os_memcmp(md, wpa_s->sme.mobility_domain, 2) == 0 && |
200 | wpa_sm_has_ptk(wpa_s->wpa)) { | |
f049052b BG |
201 | wpa_dbg(wpa_s, MSG_DEBUG, "SME: Trying to use FT " |
202 | "over-the-air"); | |
abd9fafa | 203 | params.auth_alg = WPA_AUTH_ALG_FT; |
c2a04078 JM |
204 | params.ie = wpa_s->sme.ft_ies; |
205 | params.ie_len = wpa_s->sme.ft_ies_len; | |
206 | } | |
207 | } | |
208 | #endif /* CONFIG_IEEE80211R */ | |
209 | ||
210 | #ifdef CONFIG_IEEE80211W | |
70f8cc8e | 211 | wpa_s->sme.mfp = ssid->ieee80211w; |
f337f0e9 | 212 | if (ssid->ieee80211w != NO_MGMT_FRAME_PROTECTION) { |
6fa81a3b | 213 | const u8 *rsn = wpa_bss_get_ie(bss, WLAN_EID_RSN); |
c2a04078 JM |
214 | struct wpa_ie_data _ie; |
215 | if (rsn && wpa_parse_wpa_ie(rsn, 2 + rsn[1], &_ie) == 0 && | |
216 | _ie.capabilities & | |
217 | (WPA_CAPABILITY_MFPC | WPA_CAPABILITY_MFPR)) { | |
f049052b BG |
218 | wpa_dbg(wpa_s, MSG_DEBUG, "SME: Selected AP supports " |
219 | "MFP: require MFP"); | |
c2a04078 JM |
220 | wpa_s->sme.mfp = MGMT_FRAME_PROTECTION_REQUIRED; |
221 | } | |
222 | } | |
223 | #endif /* CONFIG_IEEE80211W */ | |
224 | ||
5f3a6aa0 JM |
225 | #ifdef CONFIG_P2P |
226 | if (wpa_s->global->p2p) { | |
227 | u8 *pos; | |
228 | size_t len; | |
229 | int res; | |
5f3a6aa0 JM |
230 | pos = wpa_s->sme.assoc_req_ie + wpa_s->sme.assoc_req_ie_len; |
231 | len = sizeof(wpa_s->sme.assoc_req_ie) - | |
232 | wpa_s->sme.assoc_req_ie_len; | |
ffad8858 JM |
233 | res = wpas_p2p_assoc_req_ie(wpa_s, bss, pos, len, |
234 | ssid->p2p_group); | |
5f3a6aa0 JM |
235 | if (res >= 0) |
236 | wpa_s->sme.assoc_req_ie_len += res; | |
237 | } | |
238 | #endif /* CONFIG_P2P */ | |
239 | ||
a4cba8f1 | 240 | wpa_supplicant_cancel_sched_scan(wpa_s); |
c2a04078 JM |
241 | wpa_supplicant_cancel_scan(wpa_s); |
242 | ||
f049052b | 243 | wpa_msg(wpa_s, MSG_INFO, "SME: Trying to authenticate with " MACSTR |
c2a04078 JM |
244 | " (SSID='%s' freq=%d MHz)", MAC2STR(params.bssid), |
245 | wpa_ssid_txt(params.ssid, params.ssid_len), params.freq); | |
246 | ||
247 | wpa_clear_keys(wpa_s, bss->bssid); | |
248 | wpa_supplicant_set_state(wpa_s, WPA_AUTHENTICATING); | |
8bac466b | 249 | old_ssid = wpa_s->current_ssid; |
c2a04078 JM |
250 | wpa_s->current_ssid = ssid; |
251 | wpa_supplicant_rsn_supp_set_config(wpa_s, wpa_s->current_ssid); | |
252 | wpa_supplicant_initiate_eapol(wpa_s); | |
8bac466b JM |
253 | if (old_ssid != wpa_s->current_ssid) |
254 | wpas_notify_network_changed(wpa_s); | |
c2a04078 | 255 | |
62c72d72 | 256 | wpa_s->sme.auth_alg = params.auth_alg; |
c2a04078 | 257 | if (wpa_drv_authenticate(wpa_s, ¶ms) < 0) { |
f049052b | 258 | wpa_msg(wpa_s, MSG_INFO, "SME: Authentication request to the " |
c2a04078 | 259 | "driver failed"); |
6e3f7173 | 260 | wpa_supplicant_req_scan(wpa_s, 1, 0); |
c2a04078 JM |
261 | return; |
262 | } | |
263 | ||
e29853bb BG |
264 | eloop_register_timeout(SME_AUTH_TIMEOUT, 0, sme_auth_timer, wpa_s, |
265 | NULL); | |
c2a04078 JM |
266 | |
267 | /* | |
268 | * Association will be started based on the authentication event from | |
269 | * the driver. | |
270 | */ | |
271 | } | |
272 | ||
273 | ||
274 | void sme_event_auth(struct wpa_supplicant *wpa_s, union wpa_event_data *data) | |
275 | { | |
c2a04078 JM |
276 | struct wpa_ssid *ssid = wpa_s->current_ssid; |
277 | ||
278 | if (ssid == NULL) { | |
f049052b BG |
279 | wpa_dbg(wpa_s, MSG_DEBUG, "SME: Ignore authentication event " |
280 | "when network is not selected"); | |
c2a04078 JM |
281 | return; |
282 | } | |
283 | ||
284 | if (wpa_s->wpa_state != WPA_AUTHENTICATING) { | |
f049052b BG |
285 | wpa_dbg(wpa_s, MSG_DEBUG, "SME: Ignore authentication event " |
286 | "when not in authenticating state"); | |
c2a04078 JM |
287 | return; |
288 | } | |
289 | ||
290 | if (os_memcmp(wpa_s->pending_bssid, data->auth.peer, ETH_ALEN) != 0) { | |
f049052b BG |
291 | wpa_dbg(wpa_s, MSG_DEBUG, "SME: Ignore authentication with " |
292 | "unexpected peer " MACSTR, | |
293 | MAC2STR(data->auth.peer)); | |
c2a04078 JM |
294 | return; |
295 | } | |
296 | ||
f049052b BG |
297 | wpa_dbg(wpa_s, MSG_DEBUG, "SME: Authentication response: peer=" MACSTR |
298 | " auth_type=%d status_code=%d", | |
299 | MAC2STR(data->auth.peer), data->auth.auth_type, | |
300 | data->auth.status_code); | |
c2a04078 JM |
301 | wpa_hexdump(MSG_MSGDUMP, "SME: Authentication response IEs", |
302 | data->auth.ies, data->auth.ies_len); | |
303 | ||
e29853bb BG |
304 | eloop_cancel_timeout(sme_auth_timer, wpa_s, NULL); |
305 | ||
c2a04078 | 306 | if (data->auth.status_code != WLAN_STATUS_SUCCESS) { |
f049052b BG |
307 | wpa_dbg(wpa_s, MSG_DEBUG, "SME: Authentication failed (status " |
308 | "code %d)", data->auth.status_code); | |
cb1583f6 SO |
309 | |
310 | if (data->auth.status_code != | |
311 | WLAN_STATUS_NOT_SUPPORTED_AUTH_ALG || | |
312 | wpa_s->sme.auth_alg == data->auth.auth_type || | |
7e6646c7 | 313 | wpa_s->current_ssid->auth_alg == WPA_AUTH_ALG_LEAP) { |
0fb337c1 | 314 | wpas_connection_failed(wpa_s, wpa_s->pending_bssid); |
cb1583f6 | 315 | return; |
7e6646c7 | 316 | } |
cb1583f6 SO |
317 | |
318 | switch (data->auth.auth_type) { | |
319 | case WLAN_AUTH_OPEN: | |
320 | wpa_s->current_ssid->auth_alg = WPA_AUTH_ALG_SHARED; | |
321 | ||
f049052b | 322 | wpa_dbg(wpa_s, MSG_DEBUG, "SME: Trying SHARED auth"); |
cb1583f6 SO |
323 | wpa_supplicant_associate(wpa_s, wpa_s->current_bss, |
324 | wpa_s->current_ssid); | |
325 | return; | |
326 | ||
327 | case WLAN_AUTH_SHARED_KEY: | |
328 | wpa_s->current_ssid->auth_alg = WPA_AUTH_ALG_LEAP; | |
329 | ||
f049052b | 330 | wpa_dbg(wpa_s, MSG_DEBUG, "SME: Trying LEAP auth"); |
cb1583f6 SO |
331 | wpa_supplicant_associate(wpa_s, wpa_s->current_bss, |
332 | wpa_s->current_ssid); | |
333 | return; | |
334 | ||
335 | default: | |
336 | return; | |
337 | } | |
c2a04078 JM |
338 | } |
339 | ||
340 | #ifdef CONFIG_IEEE80211R | |
341 | if (data->auth.auth_type == WLAN_AUTH_FT) { | |
342 | union wpa_event_data edata; | |
343 | os_memset(&edata, 0, sizeof(edata)); | |
344 | edata.ft_ies.ies = data->auth.ies; | |
345 | edata.ft_ies.ies_len = data->auth.ies_len; | |
346 | os_memcpy(edata.ft_ies.target_ap, data->auth.peer, ETH_ALEN); | |
347 | wpa_supplicant_event(wpa_s, EVENT_FT_RESPONSE, &edata); | |
348 | } | |
349 | #endif /* CONFIG_IEEE80211R */ | |
350 | ||
71024cb2 JM |
351 | sme_associate(wpa_s, ssid->mode, data->auth.peer, |
352 | data->auth.auth_type); | |
353 | } | |
354 | ||
355 | ||
356 | void sme_associate(struct wpa_supplicant *wpa_s, enum wpas_mode mode, | |
357 | const u8 *bssid, u16 auth_type) | |
358 | { | |
359 | struct wpa_driver_associate_params params; | |
d9a27b04 | 360 | struct ieee802_11_elems elems; |
71024cb2 | 361 | |
c2a04078 | 362 | os_memset(¶ms, 0, sizeof(params)); |
71024cb2 | 363 | params.bssid = bssid; |
c2a04078 JM |
364 | params.ssid = wpa_s->sme.ssid; |
365 | params.ssid_len = wpa_s->sme.ssid_len; | |
366 | params.freq = wpa_s->sme.freq; | |
367 | params.wpa_ie = wpa_s->sme.assoc_req_ie_len ? | |
368 | wpa_s->sme.assoc_req_ie : NULL; | |
369 | params.wpa_ie_len = wpa_s->sme.assoc_req_ie_len; | |
aca01605 JM |
370 | params.pairwise_suite = cipher_suite2driver(wpa_s->pairwise_cipher); |
371 | params.group_suite = cipher_suite2driver(wpa_s->group_cipher); | |
c2a04078 | 372 | #ifdef CONFIG_IEEE80211R |
71024cb2 | 373 | if (auth_type == WLAN_AUTH_FT && wpa_s->sme.ft_ies) { |
c2a04078 JM |
374 | params.wpa_ie = wpa_s->sme.ft_ies; |
375 | params.wpa_ie_len = wpa_s->sme.ft_ies_len; | |
376 | } | |
377 | #endif /* CONFIG_IEEE80211R */ | |
71024cb2 | 378 | params.mode = mode; |
c2a04078 | 379 | params.mgmt_frame_protection = wpa_s->sme.mfp; |
62fa124c JM |
380 | if (wpa_s->sme.prev_bssid_set) |
381 | params.prev_bssid = wpa_s->sme.prev_bssid; | |
c2a04078 JM |
382 | |
383 | wpa_msg(wpa_s, MSG_INFO, "Trying to associate with " MACSTR | |
384 | " (SSID='%s' freq=%d MHz)", MAC2STR(params.bssid), | |
385 | params.ssid ? wpa_ssid_txt(params.ssid, params.ssid_len) : "", | |
386 | params.freq); | |
387 | ||
388 | wpa_supplicant_set_state(wpa_s, WPA_ASSOCIATING); | |
389 | ||
9efc3f2a JM |
390 | if (params.wpa_ie == NULL || |
391 | ieee802_11_parse_elems(params.wpa_ie, params.wpa_ie_len, &elems, 0) | |
d9a27b04 | 392 | < 0) { |
f049052b | 393 | wpa_dbg(wpa_s, MSG_DEBUG, "SME: Could not parse own IEs?!"); |
d9a27b04 JM |
394 | os_memset(&elems, 0, sizeof(elems)); |
395 | } | |
64fa840a JM |
396 | if (elems.rsn_ie) { |
397 | params.wpa_proto = WPA_PROTO_RSN; | |
d9a27b04 JM |
398 | wpa_sm_set_assoc_wpa_ie(wpa_s->wpa, elems.rsn_ie - 2, |
399 | elems.rsn_ie_len + 2); | |
64fa840a JM |
400 | } else if (elems.wpa_ie) { |
401 | params.wpa_proto = WPA_PROTO_WPA; | |
d9a27b04 JM |
402 | wpa_sm_set_assoc_wpa_ie(wpa_s->wpa, elems.wpa_ie - 2, |
403 | elems.wpa_ie_len + 2); | |
64fa840a | 404 | } else |
d9a27b04 | 405 | wpa_sm_set_assoc_wpa_ie(wpa_s->wpa, NULL, 0); |
ffad8858 | 406 | if (wpa_s->current_ssid && wpa_s->current_ssid->p2p_group) |
6e3f4b89 | 407 | params.p2p = 1; |
d9a27b04 | 408 | |
eea2fd9e JM |
409 | if (wpa_s->parent->set_sta_uapsd) |
410 | params.uapsd = wpa_s->parent->sta_uapsd; | |
411 | else | |
412 | params.uapsd = -1; | |
413 | ||
c2a04078 | 414 | if (wpa_drv_associate(wpa_s, ¶ms) < 0) { |
f049052b BG |
415 | wpa_msg(wpa_s, MSG_INFO, "SME: Association request to the " |
416 | "driver failed"); | |
e5ad96b7 JM |
417 | wpas_connection_failed(wpa_s, wpa_s->pending_bssid); |
418 | os_memset(wpa_s->pending_bssid, 0, ETH_ALEN); | |
c2a04078 JM |
419 | return; |
420 | } | |
421 | ||
e29853bb BG |
422 | eloop_register_timeout(SME_ASSOC_TIMEOUT, 0, sme_assoc_timer, wpa_s, |
423 | NULL); | |
c2a04078 JM |
424 | } |
425 | ||
426 | ||
427 | int sme_update_ft_ies(struct wpa_supplicant *wpa_s, const u8 *md, | |
428 | const u8 *ies, size_t ies_len) | |
429 | { | |
430 | if (md == NULL || ies == NULL) { | |
f049052b | 431 | wpa_dbg(wpa_s, MSG_DEBUG, "SME: Remove mobility domain"); |
c2a04078 JM |
432 | os_free(wpa_s->sme.ft_ies); |
433 | wpa_s->sme.ft_ies = NULL; | |
434 | wpa_s->sme.ft_ies_len = 0; | |
435 | wpa_s->sme.ft_used = 0; | |
436 | return 0; | |
437 | } | |
438 | ||
439 | os_memcpy(wpa_s->sme.mobility_domain, md, MOBILITY_DOMAIN_ID_LEN); | |
440 | wpa_hexdump(MSG_DEBUG, "SME: FT IEs", ies, ies_len); | |
441 | os_free(wpa_s->sme.ft_ies); | |
442 | wpa_s->sme.ft_ies = os_malloc(ies_len); | |
443 | if (wpa_s->sme.ft_ies == NULL) | |
444 | return -1; | |
445 | os_memcpy(wpa_s->sme.ft_ies, ies, ies_len); | |
446 | wpa_s->sme.ft_ies_len = ies_len; | |
447 | return 0; | |
448 | } | |
efa46078 JM |
449 | |
450 | ||
e29853bb | 451 | static void sme_deauth(struct wpa_supplicant *wpa_s) |
efa46078 | 452 | { |
8bac466b JM |
453 | int bssid_changed; |
454 | ||
8bac466b | 455 | bssid_changed = !is_zero_ether_addr(wpa_s->bssid); |
76d11d3f | 456 | |
76d11d3f JM |
457 | if (wpa_drv_deauthenticate(wpa_s, wpa_s->pending_bssid, |
458 | WLAN_REASON_DEAUTH_LEAVING) < 0) { | |
f049052b BG |
459 | wpa_msg(wpa_s, MSG_INFO, "SME: Deauth request to the driver " |
460 | "failed"); | |
76d11d3f | 461 | } |
62fa124c | 462 | wpa_s->sme.prev_bssid_set = 0; |
76d11d3f | 463 | |
0fb337c1 | 464 | wpas_connection_failed(wpa_s, wpa_s->pending_bssid); |
76d11d3f | 465 | wpa_supplicant_set_state(wpa_s, WPA_DISCONNECTED); |
efa46078 JM |
466 | os_memset(wpa_s->bssid, 0, ETH_ALEN); |
467 | os_memset(wpa_s->pending_bssid, 0, ETH_ALEN); | |
8bac466b JM |
468 | if (bssid_changed) |
469 | wpas_notify_bssid_changed(wpa_s); | |
efa46078 | 470 | } |
da1fb17c JM |
471 | |
472 | ||
e29853bb BG |
473 | void sme_event_assoc_reject(struct wpa_supplicant *wpa_s, |
474 | union wpa_event_data *data) | |
475 | { | |
476 | wpa_dbg(wpa_s, MSG_DEBUG, "SME: Association with " MACSTR " failed: " | |
477 | "status code %d", MAC2STR(wpa_s->pending_bssid), | |
478 | data->assoc_reject.status_code); | |
479 | ||
480 | eloop_cancel_timeout(sme_assoc_timer, wpa_s, NULL); | |
481 | ||
482 | /* | |
483 | * For now, unconditionally terminate the previous authentication. In | |
484 | * theory, this should not be needed, but mac80211 gets quite confused | |
485 | * if the authentication is left pending.. Some roaming cases might | |
486 | * benefit from using the previous authentication, so this could be | |
487 | * optimized in the future. | |
488 | */ | |
489 | sme_deauth(wpa_s); | |
490 | } | |
491 | ||
492 | ||
da1fb17c JM |
493 | void sme_event_auth_timed_out(struct wpa_supplicant *wpa_s, |
494 | union wpa_event_data *data) | |
495 | { | |
f049052b | 496 | wpa_dbg(wpa_s, MSG_DEBUG, "SME: Authentication timed out"); |
0fb337c1 | 497 | wpas_connection_failed(wpa_s, wpa_s->pending_bssid); |
da1fb17c JM |
498 | } |
499 | ||
500 | ||
501 | void sme_event_assoc_timed_out(struct wpa_supplicant *wpa_s, | |
502 | union wpa_event_data *data) | |
503 | { | |
f049052b | 504 | wpa_dbg(wpa_s, MSG_DEBUG, "SME: Association timed out"); |
0fb337c1 | 505 | wpas_connection_failed(wpa_s, wpa_s->pending_bssid); |
da1fb17c | 506 | wpa_supplicant_mark_disassoc(wpa_s); |
da1fb17c | 507 | } |
a84ed99e JM |
508 | |
509 | ||
510 | void sme_event_disassoc(struct wpa_supplicant *wpa_s, | |
511 | union wpa_event_data *data) | |
512 | { | |
f049052b | 513 | wpa_dbg(wpa_s, MSG_DEBUG, "SME: Disassociation event received"); |
7e26053a | 514 | if (wpa_s->sme.prev_bssid_set && |
a84ed99e JM |
515 | !(wpa_s->drv_flags & WPA_DRIVER_FLAGS_USER_SPACE_MLME)) { |
516 | /* | |
517 | * cfg80211/mac80211 can get into somewhat confused state if | |
518 | * the AP only disassociates us and leaves us in authenticated | |
519 | * state. For now, force the state to be cleared to avoid | |
520 | * confusing errors if we try to associate with the AP again. | |
521 | */ | |
f049052b BG |
522 | wpa_dbg(wpa_s, MSG_DEBUG, "SME: Deauthenticate to clear " |
523 | "driver state"); | |
7e26053a | 524 | wpa_drv_deauthenticate(wpa_s, wpa_s->sme.prev_bssid, |
a84ed99e JM |
525 | WLAN_REASON_DEAUTH_LEAVING); |
526 | } | |
527 | } | |
7d878ca7 JM |
528 | |
529 | ||
e29853bb BG |
530 | static void sme_auth_timer(void *eloop_ctx, void *timeout_ctx) |
531 | { | |
532 | struct wpa_supplicant *wpa_s = eloop_ctx; | |
533 | if (wpa_s->wpa_state == WPA_AUTHENTICATING) { | |
534 | wpa_msg(wpa_s, MSG_DEBUG, "SME: Authentication timeout"); | |
535 | sme_deauth(wpa_s); | |
536 | } | |
537 | } | |
538 | ||
539 | ||
540 | static void sme_assoc_timer(void *eloop_ctx, void *timeout_ctx) | |
541 | { | |
542 | struct wpa_supplicant *wpa_s = eloop_ctx; | |
543 | if (wpa_s->wpa_state == WPA_ASSOCIATING) { | |
544 | wpa_msg(wpa_s, MSG_DEBUG, "SME: Association timeout"); | |
545 | sme_deauth(wpa_s); | |
546 | } | |
547 | } | |
548 | ||
549 | ||
550 | void sme_state_changed(struct wpa_supplicant *wpa_s) | |
551 | { | |
552 | /* Make sure timers are cleaned up appropriately. */ | |
553 | if (wpa_s->wpa_state != WPA_ASSOCIATING) | |
554 | eloop_cancel_timeout(sme_assoc_timer, wpa_s, NULL); | |
555 | if (wpa_s->wpa_state != WPA_AUTHENTICATING) | |
556 | eloop_cancel_timeout(sme_auth_timer, wpa_s, NULL); | |
557 | } | |
558 | ||
559 | ||
560 | void sme_disassoc_while_authenticating(struct wpa_supplicant *wpa_s, | |
561 | const u8 *prev_pending_bssid) | |
562 | { | |
563 | /* | |
564 | * mac80211-workaround to force deauth on failed auth cmd, | |
565 | * requires us to remain in authenticating state to allow the | |
566 | * second authentication attempt to be continued properly. | |
567 | */ | |
568 | wpa_dbg(wpa_s, MSG_DEBUG, "SME: Allow pending authentication " | |
569 | "to proceed after disconnection event"); | |
570 | wpa_supplicant_set_state(wpa_s, WPA_AUTHENTICATING); | |
571 | os_memcpy(wpa_s->pending_bssid, prev_pending_bssid, ETH_ALEN); | |
572 | ||
573 | /* | |
574 | * Re-arm authentication timer in case auth fails for whatever reason. | |
575 | */ | |
576 | eloop_cancel_timeout(sme_auth_timer, wpa_s, NULL); | |
577 | eloop_register_timeout(SME_AUTH_TIMEOUT, 0, sme_auth_timer, wpa_s, | |
578 | NULL); | |
579 | } | |
580 | ||
581 | ||
582 | void sme_deinit(struct wpa_supplicant *wpa_s) | |
583 | { | |
584 | os_free(wpa_s->sme.ft_ies); | |
585 | wpa_s->sme.ft_ies = NULL; | |
586 | wpa_s->sme.ft_ies_len = 0; | |
587 | #ifdef CONFIG_IEEE80211W | |
588 | sme_stop_sa_query(wpa_s); | |
589 | #endif /* CONFIG_IEEE80211W */ | |
590 | ||
591 | eloop_cancel_timeout(sme_assoc_timer, wpa_s, NULL); | |
592 | eloop_cancel_timeout(sme_auth_timer, wpa_s, NULL); | |
593 | } | |
594 | ||
595 | ||
7d878ca7 JM |
596 | #ifdef CONFIG_IEEE80211W |
597 | ||
598 | static const unsigned int sa_query_max_timeout = 1000; | |
599 | static const unsigned int sa_query_retry_timeout = 201; | |
600 | ||
601 | static int sme_check_sa_query_timeout(struct wpa_supplicant *wpa_s) | |
602 | { | |
603 | u32 tu; | |
604 | struct os_time now, passed; | |
605 | os_get_time(&now); | |
606 | os_time_sub(&now, &wpa_s->sme.sa_query_start, &passed); | |
607 | tu = (passed.sec * 1000000 + passed.usec) / 1024; | |
608 | if (sa_query_max_timeout < tu) { | |
f049052b | 609 | wpa_dbg(wpa_s, MSG_DEBUG, "SME: SA Query timed out"); |
7d878ca7 JM |
610 | sme_stop_sa_query(wpa_s); |
611 | wpa_supplicant_deauthenticate( | |
612 | wpa_s, WLAN_REASON_PREV_AUTH_NOT_VALID); | |
613 | return 1; | |
614 | } | |
615 | ||
616 | return 0; | |
617 | } | |
618 | ||
619 | ||
620 | static void sme_send_sa_query_req(struct wpa_supplicant *wpa_s, | |
621 | const u8 *trans_id) | |
622 | { | |
623 | u8 req[2 + WLAN_SA_QUERY_TR_ID_LEN]; | |
f049052b BG |
624 | wpa_dbg(wpa_s, MSG_DEBUG, "SME: Sending SA Query Request to " |
625 | MACSTR, MAC2STR(wpa_s->bssid)); | |
7d878ca7 JM |
626 | wpa_hexdump(MSG_DEBUG, "SME: SA Query Transaction ID", |
627 | trans_id, WLAN_SA_QUERY_TR_ID_LEN); | |
628 | req[0] = WLAN_ACTION_SA_QUERY; | |
629 | req[1] = WLAN_SA_QUERY_REQUEST; | |
630 | os_memcpy(req + 2, trans_id, WLAN_SA_QUERY_TR_ID_LEN); | |
190b9062 | 631 | if (wpa_drv_send_action(wpa_s, wpa_s->assoc_freq, 0, wpa_s->bssid, |
7d878ca7 JM |
632 | wpa_s->own_addr, wpa_s->bssid, |
633 | req, sizeof(req)) < 0) | |
f049052b BG |
634 | wpa_msg(wpa_s, MSG_INFO, "SME: Failed to send SA Query " |
635 | "Request"); | |
7d878ca7 JM |
636 | } |
637 | ||
638 | ||
639 | static void sme_sa_query_timer(void *eloop_ctx, void *timeout_ctx) | |
640 | { | |
641 | struct wpa_supplicant *wpa_s = eloop_ctx; | |
642 | unsigned int timeout, sec, usec; | |
643 | u8 *trans_id, *nbuf; | |
644 | ||
645 | if (wpa_s->sme.sa_query_count > 0 && | |
646 | sme_check_sa_query_timeout(wpa_s)) | |
647 | return; | |
648 | ||
649 | nbuf = os_realloc(wpa_s->sme.sa_query_trans_id, | |
650 | (wpa_s->sme.sa_query_count + 1) * | |
651 | WLAN_SA_QUERY_TR_ID_LEN); | |
652 | if (nbuf == NULL) | |
653 | return; | |
654 | if (wpa_s->sme.sa_query_count == 0) { | |
655 | /* Starting a new SA Query procedure */ | |
656 | os_get_time(&wpa_s->sme.sa_query_start); | |
657 | } | |
658 | trans_id = nbuf + wpa_s->sme.sa_query_count * WLAN_SA_QUERY_TR_ID_LEN; | |
659 | wpa_s->sme.sa_query_trans_id = nbuf; | |
660 | wpa_s->sme.sa_query_count++; | |
661 | ||
662 | os_get_random(trans_id, WLAN_SA_QUERY_TR_ID_LEN); | |
663 | ||
664 | timeout = sa_query_retry_timeout; | |
665 | sec = ((timeout / 1000) * 1024) / 1000; | |
666 | usec = (timeout % 1000) * 1024; | |
667 | eloop_register_timeout(sec, usec, sme_sa_query_timer, wpa_s, NULL); | |
668 | ||
f049052b BG |
669 | wpa_dbg(wpa_s, MSG_DEBUG, "SME: Association SA Query attempt %d", |
670 | wpa_s->sme.sa_query_count); | |
7d878ca7 JM |
671 | |
672 | sme_send_sa_query_req(wpa_s, trans_id); | |
673 | } | |
674 | ||
675 | ||
676 | static void sme_start_sa_query(struct wpa_supplicant *wpa_s) | |
677 | { | |
678 | sme_sa_query_timer(wpa_s, NULL); | |
679 | } | |
680 | ||
681 | ||
682 | void sme_stop_sa_query(struct wpa_supplicant *wpa_s) | |
683 | { | |
684 | eloop_cancel_timeout(sme_sa_query_timer, wpa_s, NULL); | |
685 | os_free(wpa_s->sme.sa_query_trans_id); | |
686 | wpa_s->sme.sa_query_trans_id = NULL; | |
687 | wpa_s->sme.sa_query_count = 0; | |
688 | } | |
689 | ||
690 | ||
691 | void sme_event_unprot_disconnect(struct wpa_supplicant *wpa_s, const u8 *sa, | |
692 | const u8 *da, u16 reason_code) | |
693 | { | |
694 | struct wpa_ssid *ssid; | |
695 | ||
696 | if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME)) | |
697 | return; | |
698 | if (wpa_s->wpa_state != WPA_COMPLETED) | |
699 | return; | |
700 | ssid = wpa_s->current_ssid; | |
701 | if (ssid == NULL || ssid->ieee80211w == 0) | |
702 | return; | |
703 | if (os_memcmp(sa, wpa_s->bssid, ETH_ALEN) != 0) | |
704 | return; | |
705 | if (reason_code != WLAN_REASON_CLASS2_FRAME_FROM_NONAUTH_STA && | |
706 | reason_code != WLAN_REASON_CLASS3_FRAME_FROM_NONASSOC_STA) | |
707 | return; | |
708 | if (wpa_s->sme.sa_query_count > 0) | |
709 | return; | |
710 | ||
f049052b BG |
711 | wpa_dbg(wpa_s, MSG_DEBUG, "SME: Unprotected disconnect dropped - " |
712 | "possible AP/STA state mismatch - trigger SA Query"); | |
7d878ca7 JM |
713 | sme_start_sa_query(wpa_s); |
714 | } | |
715 | ||
716 | ||
717 | void sme_sa_query_rx(struct wpa_supplicant *wpa_s, const u8 *sa, | |
718 | const u8 *data, size_t len) | |
719 | { | |
720 | int i; | |
721 | ||
722 | if (wpa_s->sme.sa_query_trans_id == NULL || | |
723 | len < 1 + WLAN_SA_QUERY_TR_ID_LEN || | |
724 | data[0] != WLAN_SA_QUERY_RESPONSE) | |
725 | return; | |
f049052b BG |
726 | wpa_dbg(wpa_s, MSG_DEBUG, "SME: Received SA Query response from " |
727 | MACSTR " (trans_id %02x%02x)", MAC2STR(sa), data[1], data[2]); | |
7d878ca7 JM |
728 | |
729 | if (os_memcmp(sa, wpa_s->bssid, ETH_ALEN) != 0) | |
730 | return; | |
731 | ||
732 | for (i = 0; i < wpa_s->sme.sa_query_count; i++) { | |
733 | if (os_memcmp(wpa_s->sme.sa_query_trans_id + | |
734 | i * WLAN_SA_QUERY_TR_ID_LEN, | |
735 | data + 1, WLAN_SA_QUERY_TR_ID_LEN) == 0) | |
736 | break; | |
737 | } | |
738 | ||
739 | if (i >= wpa_s->sme.sa_query_count) { | |
f049052b BG |
740 | wpa_dbg(wpa_s, MSG_DEBUG, "SME: No matching SA Query " |
741 | "transaction identifier found"); | |
7d878ca7 JM |
742 | return; |
743 | } | |
744 | ||
f049052b BG |
745 | wpa_dbg(wpa_s, MSG_DEBUG, "SME: Reply to pending SA Query received " |
746 | "from " MACSTR, MAC2STR(sa)); | |
7d878ca7 JM |
747 | sme_stop_sa_query(wpa_s); |
748 | } | |
749 | ||
750 | #endif /* CONFIG_IEEE80211W */ |