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6fc6879b JM |
1 | /* |
2 | * WPA Supplicant - Driver event processing | |
8d923a4a | 3 | * Copyright (c) 2003-2010, Jouni Malinen <j@w1.fi> |
6fc6879b 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" | |
18 | #include "eapol_supp/eapol_supp_sm.h" | |
3acb5005 | 19 | #include "rsn_supp/wpa.h" |
6fc6879b | 20 | #include "eloop.h" |
6fc6879b JM |
21 | #include "config.h" |
22 | #include "l2_packet/l2_packet.h" | |
23 | #include "wpa_supplicant_i.h" | |
2d5b792d | 24 | #include "driver_i.h" |
6fc6879b | 25 | #include "pcsc_funcs.h" |
3acb5005 JM |
26 | #include "rsn_supp/preauth.h" |
27 | #include "rsn_supp/pmksa_cache.h" | |
90973fb2 | 28 | #include "common/wpa_ctrl.h" |
6fc6879b | 29 | #include "eap_peer/eap.h" |
1d041bec | 30 | #include "ap/hostapd.h" |
8bac466b | 31 | #include "notify.h" |
90973fb2 | 32 | #include "common/ieee802_11_defs.h" |
6fc6879b JM |
33 | #include "blacklist.h" |
34 | #include "wpas_glue.h" | |
351f09a2 | 35 | #include "wps_supplicant.h" |
11ef8d35 | 36 | #include "ibss_rsn.h" |
c2a04078 | 37 | #include "sme.h" |
60b94c98 | 38 | #include "bgscan.h" |
f8b1f695 | 39 | #include "ap.h" |
6fa81a3b | 40 | #include "bss.h" |
245519e0 | 41 | #include "mlme.h" |
9ba9fa07 | 42 | #include "scan.h" |
6fc6879b JM |
43 | |
44 | ||
45 | static int wpa_supplicant_select_config(struct wpa_supplicant *wpa_s) | |
46 | { | |
8bac466b | 47 | struct wpa_ssid *ssid, *old_ssid; |
6fc6879b JM |
48 | |
49 | if (wpa_s->conf->ap_scan == 1 && wpa_s->current_ssid) | |
50 | return 0; | |
51 | ||
52 | wpa_printf(MSG_DEBUG, "Select network based on association " | |
53 | "information"); | |
54 | ssid = wpa_supplicant_get_ssid(wpa_s); | |
55 | if (ssid == NULL) { | |
56 | wpa_printf(MSG_INFO, "No network configuration found for the " | |
57 | "current AP"); | |
58 | return -1; | |
59 | } | |
60 | ||
61 | if (ssid->disabled) { | |
62 | wpa_printf(MSG_DEBUG, "Selected network is disabled"); | |
63 | return -1; | |
64 | } | |
65 | ||
66 | wpa_printf(MSG_DEBUG, "Network configuration found for the current " | |
67 | "AP"); | |
68 | if (ssid->key_mgmt & (WPA_KEY_MGMT_PSK | WPA_KEY_MGMT_IEEE8021X | | |
69 | WPA_KEY_MGMT_WPA_NONE | | |
56586197 JM |
70 | WPA_KEY_MGMT_FT_PSK | WPA_KEY_MGMT_FT_IEEE8021X | |
71 | WPA_KEY_MGMT_PSK_SHA256 | | |
72 | WPA_KEY_MGMT_IEEE8021X_SHA256)) { | |
6fc6879b JM |
73 | u8 wpa_ie[80]; |
74 | size_t wpa_ie_len = sizeof(wpa_ie); | |
75 | wpa_supplicant_set_suites(wpa_s, NULL, ssid, | |
76 | wpa_ie, &wpa_ie_len); | |
77 | } else { | |
78 | wpa_supplicant_set_non_wpa_policy(wpa_s, ssid); | |
79 | } | |
80 | ||
81 | if (wpa_s->current_ssid && wpa_s->current_ssid != ssid) | |
82 | eapol_sm_invalidate_cached_session(wpa_s->eapol); | |
8bac466b | 83 | old_ssid = wpa_s->current_ssid; |
6fc6879b JM |
84 | wpa_s->current_ssid = ssid; |
85 | wpa_supplicant_rsn_supp_set_config(wpa_s, wpa_s->current_ssid); | |
86 | wpa_supplicant_initiate_eapol(wpa_s); | |
8bac466b JM |
87 | if (old_ssid != wpa_s->current_ssid) |
88 | wpas_notify_network_changed(wpa_s); | |
6fc6879b JM |
89 | |
90 | return 0; | |
91 | } | |
92 | ||
93 | ||
94 | static void wpa_supplicant_stop_countermeasures(void *eloop_ctx, | |
95 | void *sock_ctx) | |
96 | { | |
97 | struct wpa_supplicant *wpa_s = eloop_ctx; | |
98 | ||
99 | if (wpa_s->countermeasures) { | |
100 | wpa_s->countermeasures = 0; | |
101 | wpa_drv_set_countermeasures(wpa_s, 0); | |
102 | wpa_msg(wpa_s, MSG_INFO, "WPA: TKIP countermeasures stopped"); | |
103 | wpa_supplicant_req_scan(wpa_s, 0, 0); | |
104 | } | |
105 | } | |
106 | ||
107 | ||
108 | void wpa_supplicant_mark_disassoc(struct wpa_supplicant *wpa_s) | |
109 | { | |
8bac466b JM |
110 | int bssid_changed; |
111 | ||
8401a6b0 JM |
112 | if (wpa_s->wpa_state == WPA_INTERFACE_DISABLED) |
113 | return; | |
114 | ||
6fc6879b | 115 | wpa_supplicant_set_state(wpa_s, WPA_DISCONNECTED); |
8bac466b | 116 | bssid_changed = !is_zero_ether_addr(wpa_s->bssid); |
6fc6879b JM |
117 | os_memset(wpa_s->bssid, 0, ETH_ALEN); |
118 | os_memset(wpa_s->pending_bssid, 0, ETH_ALEN); | |
be8be671 | 119 | wpa_s->current_bss = NULL; |
8bac466b JM |
120 | if (bssid_changed) |
121 | wpas_notify_bssid_changed(wpa_s); | |
122 | ||
6fc6879b JM |
123 | eapol_sm_notify_portEnabled(wpa_s->eapol, FALSE); |
124 | eapol_sm_notify_portValid(wpa_s->eapol, FALSE); | |
56586197 | 125 | if (wpa_key_mgmt_wpa_psk(wpa_s->key_mgmt)) |
6fc6879b JM |
126 | eapol_sm_notify_eap_success(wpa_s->eapol, FALSE); |
127 | wpa_s->ap_ies_from_associnfo = 0; | |
128 | } | |
129 | ||
130 | ||
131 | static void wpa_find_assoc_pmkid(struct wpa_supplicant *wpa_s) | |
132 | { | |
133 | struct wpa_ie_data ie; | |
134 | int pmksa_set = -1; | |
135 | size_t i; | |
136 | ||
137 | if (wpa_sm_parse_own_wpa_ie(wpa_s->wpa, &ie) < 0 || | |
138 | ie.pmkid == NULL) | |
139 | return; | |
140 | ||
141 | for (i = 0; i < ie.num_pmkid; i++) { | |
142 | pmksa_set = pmksa_cache_set_current(wpa_s->wpa, | |
143 | ie.pmkid + i * PMKID_LEN, | |
144 | NULL, NULL, 0); | |
145 | if (pmksa_set == 0) { | |
146 | eapol_sm_notify_pmkid_attempt(wpa_s->eapol, 1); | |
147 | break; | |
148 | } | |
149 | } | |
150 | ||
151 | wpa_printf(MSG_DEBUG, "RSN: PMKID from assoc IE %sfound from PMKSA " | |
152 | "cache", pmksa_set == 0 ? "" : "not "); | |
153 | } | |
154 | ||
155 | ||
156 | static void wpa_supplicant_event_pmkid_candidate(struct wpa_supplicant *wpa_s, | |
157 | union wpa_event_data *data) | |
158 | { | |
159 | if (data == NULL) { | |
160 | wpa_printf(MSG_DEBUG, "RSN: No data in PMKID candidate event"); | |
161 | return; | |
162 | } | |
163 | wpa_printf(MSG_DEBUG, "RSN: PMKID candidate event - bssid=" MACSTR | |
164 | " index=%d preauth=%d", | |
165 | MAC2STR(data->pmkid_candidate.bssid), | |
166 | data->pmkid_candidate.index, | |
167 | data->pmkid_candidate.preauth); | |
168 | ||
169 | pmksa_candidate_add(wpa_s->wpa, data->pmkid_candidate.bssid, | |
170 | data->pmkid_candidate.index, | |
171 | data->pmkid_candidate.preauth); | |
172 | } | |
173 | ||
174 | ||
175 | static int wpa_supplicant_dynamic_keys(struct wpa_supplicant *wpa_s) | |
176 | { | |
177 | if (wpa_s->key_mgmt == WPA_KEY_MGMT_NONE || | |
178 | wpa_s->key_mgmt == WPA_KEY_MGMT_WPA_NONE) | |
179 | return 0; | |
180 | ||
181 | #ifdef IEEE8021X_EAPOL | |
182 | if (wpa_s->key_mgmt == WPA_KEY_MGMT_IEEE8021X_NO_WPA && | |
183 | wpa_s->current_ssid && | |
184 | !(wpa_s->current_ssid->eapol_flags & | |
185 | (EAPOL_FLAG_REQUIRE_KEY_UNICAST | | |
186 | EAPOL_FLAG_REQUIRE_KEY_BROADCAST))) { | |
187 | /* IEEE 802.1X, but not using dynamic WEP keys (i.e., either | |
188 | * plaintext or static WEP keys). */ | |
189 | return 0; | |
190 | } | |
191 | #endif /* IEEE8021X_EAPOL */ | |
192 | ||
193 | return 1; | |
194 | } | |
195 | ||
196 | ||
197 | /** | |
198 | * wpa_supplicant_scard_init - Initialize SIM/USIM access with PC/SC | |
199 | * @wpa_s: pointer to wpa_supplicant data | |
200 | * @ssid: Configuration data for the network | |
201 | * Returns: 0 on success, -1 on failure | |
202 | * | |
203 | * This function is called when starting authentication with a network that is | |
204 | * configured to use PC/SC for SIM/USIM access (EAP-SIM or EAP-AKA). | |
205 | */ | |
206 | int wpa_supplicant_scard_init(struct wpa_supplicant *wpa_s, | |
207 | struct wpa_ssid *ssid) | |
208 | { | |
209 | #ifdef IEEE8021X_EAPOL | |
210 | int aka = 0, sim = 0, type; | |
211 | ||
212 | if (ssid->eap.pcsc == NULL || wpa_s->scard != NULL) | |
213 | return 0; | |
214 | ||
215 | if (ssid->eap.eap_methods == NULL) { | |
216 | sim = 1; | |
217 | aka = 1; | |
218 | } else { | |
219 | struct eap_method_type *eap = ssid->eap.eap_methods; | |
220 | while (eap->vendor != EAP_VENDOR_IETF || | |
221 | eap->method != EAP_TYPE_NONE) { | |
222 | if (eap->vendor == EAP_VENDOR_IETF) { | |
223 | if (eap->method == EAP_TYPE_SIM) | |
224 | sim = 1; | |
225 | else if (eap->method == EAP_TYPE_AKA) | |
226 | aka = 1; | |
227 | } | |
228 | eap++; | |
229 | } | |
230 | } | |
231 | ||
232 | if (eap_peer_get_eap_method(EAP_VENDOR_IETF, EAP_TYPE_SIM) == NULL) | |
233 | sim = 0; | |
234 | if (eap_peer_get_eap_method(EAP_VENDOR_IETF, EAP_TYPE_AKA) == NULL) | |
235 | aka = 0; | |
236 | ||
237 | if (!sim && !aka) { | |
238 | wpa_printf(MSG_DEBUG, "Selected network is configured to use " | |
239 | "SIM, but neither EAP-SIM nor EAP-AKA are enabled"); | |
240 | return 0; | |
241 | } | |
242 | ||
243 | wpa_printf(MSG_DEBUG, "Selected network is configured to use SIM " | |
244 | "(sim=%d aka=%d) - initialize PCSC", sim, aka); | |
245 | if (sim && aka) | |
246 | type = SCARD_TRY_BOTH; | |
247 | else if (aka) | |
248 | type = SCARD_USIM_ONLY; | |
249 | else | |
250 | type = SCARD_GSM_SIM_ONLY; | |
251 | ||
252 | wpa_s->scard = scard_init(type); | |
253 | if (wpa_s->scard == NULL) { | |
254 | wpa_printf(MSG_WARNING, "Failed to initialize SIM " | |
255 | "(pcsc-lite)"); | |
256 | return -1; | |
257 | } | |
258 | wpa_sm_set_scard_ctx(wpa_s->wpa, wpa_s->scard); | |
259 | eapol_sm_register_scard_ctx(wpa_s->eapol, wpa_s->scard); | |
260 | #endif /* IEEE8021X_EAPOL */ | |
261 | ||
262 | return 0; | |
263 | } | |
264 | ||
265 | ||
266 | #ifndef CONFIG_NO_SCAN_PROCESSING | |
267 | static int wpa_supplicant_match_privacy(struct wpa_scan_res *bss, | |
268 | struct wpa_ssid *ssid) | |
269 | { | |
270 | int i, privacy = 0; | |
271 | ||
272 | if (ssid->mixed_cell) | |
273 | return 1; | |
274 | ||
0632542b AT |
275 | #ifdef CONFIG_WPS |
276 | if (ssid->key_mgmt & WPA_KEY_MGMT_WPS) | |
277 | return 1; | |
278 | #endif /* CONFIG_WPS */ | |
279 | ||
6fc6879b JM |
280 | for (i = 0; i < NUM_WEP_KEYS; i++) { |
281 | if (ssid->wep_key_len[i]) { | |
282 | privacy = 1; | |
283 | break; | |
284 | } | |
285 | } | |
286 | #ifdef IEEE8021X_EAPOL | |
287 | if ((ssid->key_mgmt & WPA_KEY_MGMT_IEEE8021X_NO_WPA) && | |
288 | ssid->eapol_flags & (EAPOL_FLAG_REQUIRE_KEY_UNICAST | | |
289 | EAPOL_FLAG_REQUIRE_KEY_BROADCAST)) | |
290 | privacy = 1; | |
291 | #endif /* IEEE8021X_EAPOL */ | |
292 | ||
293 | if (bss->caps & IEEE80211_CAP_PRIVACY) | |
294 | return privacy; | |
295 | return !privacy; | |
296 | } | |
297 | ||
298 | ||
a6099152 JM |
299 | static int wpa_supplicant_ssid_bss_match(struct wpa_supplicant *wpa_s, |
300 | struct wpa_ssid *ssid, | |
6fc6879b JM |
301 | struct wpa_scan_res *bss) |
302 | { | |
303 | struct wpa_ie_data ie; | |
304 | int proto_match = 0; | |
305 | const u8 *rsn_ie, *wpa_ie; | |
351f09a2 | 306 | int ret; |
6fc6879b | 307 | |
a6099152 | 308 | ret = wpas_wps_ssid_bss_match(wpa_s, ssid, bss); |
351f09a2 JM |
309 | if (ret >= 0) |
310 | return ret; | |
ad08c363 | 311 | |
6fc6879b JM |
312 | rsn_ie = wpa_scan_get_ie(bss, WLAN_EID_RSN); |
313 | while ((ssid->proto & WPA_PROTO_RSN) && rsn_ie) { | |
314 | proto_match++; | |
315 | ||
316 | if (wpa_parse_wpa_ie(rsn_ie, 2 + rsn_ie[1], &ie)) { | |
317 | wpa_printf(MSG_DEBUG, " skip RSN IE - parse failed"); | |
318 | break; | |
319 | } | |
320 | if (!(ie.proto & ssid->proto)) { | |
321 | wpa_printf(MSG_DEBUG, " skip RSN IE - proto " | |
322 | "mismatch"); | |
323 | break; | |
324 | } | |
325 | ||
326 | if (!(ie.pairwise_cipher & ssid->pairwise_cipher)) { | |
327 | wpa_printf(MSG_DEBUG, " skip RSN IE - PTK cipher " | |
328 | "mismatch"); | |
329 | break; | |
330 | } | |
331 | ||
332 | if (!(ie.group_cipher & ssid->group_cipher)) { | |
333 | wpa_printf(MSG_DEBUG, " skip RSN IE - GTK cipher " | |
334 | "mismatch"); | |
335 | break; | |
336 | } | |
337 | ||
338 | if (!(ie.key_mgmt & ssid->key_mgmt)) { | |
339 | wpa_printf(MSG_DEBUG, " skip RSN IE - key mgmt " | |
340 | "mismatch"); | |
341 | break; | |
342 | } | |
343 | ||
344 | #ifdef CONFIG_IEEE80211W | |
0b60b0aa | 345 | if (!(ie.capabilities & WPA_CAPABILITY_MFPC) && |
70f8cc8e | 346 | ssid->ieee80211w == MGMT_FRAME_PROTECTION_REQUIRED) { |
6fc6879b JM |
347 | wpa_printf(MSG_DEBUG, " skip RSN IE - no mgmt frame " |
348 | "protection"); | |
349 | break; | |
350 | } | |
351 | #endif /* CONFIG_IEEE80211W */ | |
352 | ||
353 | wpa_printf(MSG_DEBUG, " selected based on RSN IE"); | |
354 | return 1; | |
355 | } | |
356 | ||
357 | wpa_ie = wpa_scan_get_vendor_ie(bss, WPA_IE_VENDOR_TYPE); | |
358 | while ((ssid->proto & WPA_PROTO_WPA) && wpa_ie) { | |
359 | proto_match++; | |
360 | ||
361 | if (wpa_parse_wpa_ie(wpa_ie, 2 + wpa_ie[1], &ie)) { | |
362 | wpa_printf(MSG_DEBUG, " skip WPA IE - parse failed"); | |
363 | break; | |
364 | } | |
365 | if (!(ie.proto & ssid->proto)) { | |
366 | wpa_printf(MSG_DEBUG, " skip WPA IE - proto " | |
367 | "mismatch"); | |
368 | break; | |
369 | } | |
370 | ||
371 | if (!(ie.pairwise_cipher & ssid->pairwise_cipher)) { | |
372 | wpa_printf(MSG_DEBUG, " skip WPA IE - PTK cipher " | |
373 | "mismatch"); | |
374 | break; | |
375 | } | |
376 | ||
377 | if (!(ie.group_cipher & ssid->group_cipher)) { | |
378 | wpa_printf(MSG_DEBUG, " skip WPA IE - GTK cipher " | |
379 | "mismatch"); | |
380 | break; | |
381 | } | |
382 | ||
383 | if (!(ie.key_mgmt & ssid->key_mgmt)) { | |
384 | wpa_printf(MSG_DEBUG, " skip WPA IE - key mgmt " | |
385 | "mismatch"); | |
386 | break; | |
387 | } | |
388 | ||
389 | wpa_printf(MSG_DEBUG, " selected based on WPA IE"); | |
390 | return 1; | |
391 | } | |
392 | ||
393 | if (proto_match == 0) | |
394 | wpa_printf(MSG_DEBUG, " skip - no WPA/RSN proto match"); | |
395 | ||
396 | return 0; | |
397 | } | |
398 | ||
399 | ||
b766a9a2 JM |
400 | static int freq_allowed(int *freqs, int freq) |
401 | { | |
402 | int i; | |
403 | ||
404 | if (freqs == NULL) | |
405 | return 1; | |
406 | ||
407 | for (i = 0; freqs[i]; i++) | |
408 | if (freqs[i] == freq) | |
409 | return 1; | |
410 | return 0; | |
411 | } | |
412 | ||
413 | ||
d8d940b7 JM |
414 | static struct wpa_ssid * wpa_scan_res_match(struct wpa_supplicant *wpa_s, |
415 | int i, struct wpa_scan_res *bss, | |
416 | struct wpa_ssid *group) | |
6fc6879b | 417 | { |
d8d940b7 JM |
418 | const u8 *ssid_; |
419 | u8 wpa_ie_len, rsn_ie_len, ssid_len; | |
420 | int wpa; | |
6fc6879b JM |
421 | struct wpa_blacklist *e; |
422 | const u8 *ie; | |
d8d940b7 | 423 | struct wpa_ssid *ssid; |
6fc6879b | 424 | |
d8d940b7 JM |
425 | ie = wpa_scan_get_ie(bss, WLAN_EID_SSID); |
426 | ssid_ = ie ? ie + 2 : (u8 *) ""; | |
427 | ssid_len = ie ? ie[1] : 0; | |
6fc6879b | 428 | |
d8d940b7 JM |
429 | ie = wpa_scan_get_vendor_ie(bss, WPA_IE_VENDOR_TYPE); |
430 | wpa_ie_len = ie ? ie[1] : 0; | |
6fc6879b | 431 | |
d8d940b7 JM |
432 | ie = wpa_scan_get_ie(bss, WLAN_EID_RSN); |
433 | rsn_ie_len = ie ? ie[1] : 0; | |
6fc6879b | 434 | |
d8d940b7 JM |
435 | wpa_printf(MSG_DEBUG, "%d: " MACSTR " ssid='%s' " |
436 | "wpa_ie_len=%u rsn_ie_len=%u caps=0x%x level=%d%s", | |
437 | i, MAC2STR(bss->bssid), wpa_ssid_txt(ssid_, ssid_len), | |
438 | wpa_ie_len, rsn_ie_len, bss->caps, bss->level, | |
439 | wpa_scan_get_vendor_ie(bss, WPS_IE_VENDOR_TYPE) ? | |
440 | " wps" : ""); | |
9cf32261 | 441 | |
d8d940b7 JM |
442 | e = wpa_blacklist_get(wpa_s, bss->bssid); |
443 | if (e && e->count > 1) { | |
444 | wpa_printf(MSG_DEBUG, " skip - blacklisted"); | |
445 | return 0; | |
446 | } | |
6fc6879b | 447 | |
d8d940b7 JM |
448 | if (ssid_len == 0) { |
449 | wpa_printf(MSG_DEBUG, " skip - SSID not known"); | |
450 | return 0; | |
451 | } | |
e81634cd | 452 | |
d8d940b7 | 453 | wpa = wpa_ie_len > 0 || rsn_ie_len > 0; |
6fc6879b | 454 | |
d8d940b7 JM |
455 | for (ssid = group; ssid; ssid = ssid->pnext) { |
456 | int check_ssid = wpa ? 1 : (ssid->ssid_len != 0); | |
ad08c363 | 457 | |
d8d940b7 JM |
458 | if (ssid->disabled) { |
459 | wpa_printf(MSG_DEBUG, " skip - disabled"); | |
0c703df3 | 460 | continue; |
d8d940b7 | 461 | } |
9cf32261 | 462 | |
ad08c363 | 463 | #ifdef CONFIG_WPS |
d8d940b7 JM |
464 | if (wpa && ssid->ssid_len == 0 && |
465 | wpas_wps_ssid_wildcard_ok(wpa_s, ssid, bss)) | |
466 | check_ssid = 0; | |
467 | ||
468 | if (!wpa && (ssid->key_mgmt & WPA_KEY_MGMT_WPS)) { | |
469 | /* Only allow wildcard SSID match if an AP | |
470 | * advertises active WPS operation that matches | |
471 | * with our mode. */ | |
472 | check_ssid = 1; | |
ad08c363 | 473 | if (ssid->ssid_len == 0 && |
a6099152 | 474 | wpas_wps_ssid_wildcard_ok(wpa_s, ssid, bss)) |
ad08c363 | 475 | check_ssid = 0; |
d8d940b7 | 476 | } |
ad08c363 JM |
477 | #endif /* CONFIG_WPS */ |
478 | ||
d8d940b7 JM |
479 | if (check_ssid && |
480 | (ssid_len != ssid->ssid_len || | |
481 | os_memcmp(ssid_, ssid->ssid, ssid_len) != 0)) { | |
482 | wpa_printf(MSG_DEBUG, " skip - SSID mismatch"); | |
0c703df3 | 483 | continue; |
6fc6879b | 484 | } |
6fc6879b | 485 | |
d8d940b7 JM |
486 | if (ssid->bssid_set && |
487 | os_memcmp(bss->bssid, ssid->bssid, ETH_ALEN) != 0) { | |
488 | wpa_printf(MSG_DEBUG, " skip - BSSID mismatch"); | |
0c703df3 | 489 | continue; |
d8d940b7 | 490 | } |
6fc6879b | 491 | |
d8d940b7 | 492 | if (wpa && !wpa_supplicant_ssid_bss_match(wpa_s, ssid, bss)) |
0c703df3 | 493 | continue; |
9cf32261 | 494 | |
d8d940b7 JM |
495 | if (!wpa && |
496 | !(ssid->key_mgmt & WPA_KEY_MGMT_NONE) && | |
497 | !(ssid->key_mgmt & WPA_KEY_MGMT_WPS) && | |
498 | !(ssid->key_mgmt & WPA_KEY_MGMT_IEEE8021X_NO_WPA)) { | |
499 | wpa_printf(MSG_DEBUG, " skip - non-WPA network not " | |
500 | "allowed"); | |
0c703df3 | 501 | continue; |
6fc6879b | 502 | } |
9cf32261 | 503 | |
d8d940b7 JM |
504 | if (!wpa && !wpa_supplicant_match_privacy(bss, ssid)) { |
505 | wpa_printf(MSG_DEBUG, " skip - privacy mismatch"); | |
0c703df3 | 506 | continue; |
e81634cd JM |
507 | } |
508 | ||
d8d940b7 JM |
509 | if (!wpa && (bss->caps & IEEE80211_CAP_IBSS)) { |
510 | wpa_printf(MSG_DEBUG, " skip - IBSS (adhoc) " | |
511 | "network"); | |
0c703df3 | 512 | continue; |
d8d940b7 | 513 | } |
b766a9a2 | 514 | |
d8d940b7 JM |
515 | if (!freq_allowed(ssid->freq_list, bss->freq)) { |
516 | wpa_printf(MSG_DEBUG, " skip - frequency not " | |
517 | "allowed"); | |
0c703df3 | 518 | continue; |
6fc6879b | 519 | } |
d8d940b7 JM |
520 | |
521 | /* Matching configuration found */ | |
522 | return ssid; | |
6fc6879b JM |
523 | } |
524 | ||
d8d940b7 JM |
525 | /* No matching configuration found */ |
526 | return 0; | |
9cf32261 JM |
527 | } |
528 | ||
529 | ||
6fa81a3b | 530 | static struct wpa_bss * |
a1fd2ce5 JM |
531 | wpa_supplicant_select_bss(struct wpa_supplicant *wpa_s, |
532 | struct wpa_scan_results *scan_res, | |
533 | struct wpa_ssid *group, | |
9cf32261 JM |
534 | struct wpa_ssid **selected_ssid) |
535 | { | |
d8d940b7 | 536 | size_t i; |
9cf32261 JM |
537 | |
538 | wpa_printf(MSG_DEBUG, "Selecting BSS from priority group %d", | |
539 | group->priority); | |
540 | ||
d8d940b7 JM |
541 | for (i = 0; i < scan_res->num; i++) { |
542 | struct wpa_scan_res *bss = scan_res->res[i]; | |
543 | const u8 *ie, *ssid; | |
544 | u8 ssid_len; | |
545 | ||
546 | *selected_ssid = wpa_scan_res_match(wpa_s, i, bss, group); | |
547 | if (!*selected_ssid) | |
548 | continue; | |
549 | ||
550 | ie = wpa_scan_get_ie(bss, WLAN_EID_SSID); | |
551 | ssid = ie ? ie + 2 : (u8 *) ""; | |
552 | ssid_len = ie ? ie[1] : 0; | |
9cf32261 | 553 | |
d8d940b7 JM |
554 | wpa_printf(MSG_DEBUG, " selected BSS " MACSTR " ssid='%s'", |
555 | MAC2STR(bss->bssid), wpa_ssid_txt(ssid, ssid_len)); | |
556 | return wpa_bss_get(wpa_s, bss->bssid, ssid, ssid_len); | |
557 | } | |
558 | ||
559 | return NULL; | |
6fc6879b JM |
560 | } |
561 | ||
562 | ||
6fa81a3b | 563 | static struct wpa_bss * |
09b9df4e | 564 | wpa_supplicant_pick_network(struct wpa_supplicant *wpa_s, |
a1fd2ce5 | 565 | struct wpa_scan_results *scan_res, |
09b9df4e | 566 | struct wpa_ssid **selected_ssid) |
6fc6879b | 567 | { |
6fa81a3b | 568 | struct wpa_bss *selected = NULL; |
09b9df4e JM |
569 | int prio; |
570 | ||
571 | while (selected == NULL) { | |
572 | for (prio = 0; prio < wpa_s->conf->num_prio; prio++) { | |
573 | selected = wpa_supplicant_select_bss( | |
a1fd2ce5 | 574 | wpa_s, scan_res, wpa_s->conf->pssid[prio], |
09b9df4e JM |
575 | selected_ssid); |
576 | if (selected) | |
577 | break; | |
578 | } | |
579 | ||
580 | if (selected == NULL && wpa_s->blacklist) { | |
581 | wpa_printf(MSG_DEBUG, "No APs found - clear blacklist " | |
582 | "and try again"); | |
583 | wpa_blacklist_clear(wpa_s); | |
584 | wpa_s->blacklist_cleared++; | |
585 | } else if (selected == NULL) | |
586 | break; | |
587 | } | |
588 | ||
589 | return selected; | |
590 | } | |
591 | ||
592 | ||
593 | static void wpa_supplicant_req_new_scan(struct wpa_supplicant *wpa_s, | |
977b1174 | 594 | int timeout_sec, int timeout_usec) |
09b9df4e | 595 | { |
24f76940 | 596 | if (!wpa_supplicant_enabled_networks(wpa_s->conf)) { |
4f34d51a SL |
597 | /* |
598 | * No networks are enabled; short-circuit request so | |
599 | * we don't wait timeout seconds before transitioning | |
600 | * to INACTIVE state. | |
601 | */ | |
602 | wpa_supplicant_set_state(wpa_s, WPA_INACTIVE); | |
603 | return; | |
09b9df4e | 604 | } |
977b1174 | 605 | wpa_supplicant_req_scan(wpa_s, timeout_sec, timeout_usec); |
09b9df4e JM |
606 | } |
607 | ||
608 | ||
86d4f806 JM |
609 | void wpa_supplicant_connect(struct wpa_supplicant *wpa_s, |
610 | struct wpa_bss *selected, | |
611 | struct wpa_ssid *ssid) | |
09b9df4e JM |
612 | { |
613 | if (wpas_wps_scan_pbc_overlap(wpa_s, selected, ssid)) { | |
614 | wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_OVERLAP | |
615 | "PBC session overlap"); | |
977b1174 | 616 | wpa_supplicant_req_new_scan(wpa_s, 10, 0); |
09b9df4e JM |
617 | return; |
618 | } | |
619 | ||
620 | /* | |
621 | * Do not trigger new association unless the BSSID has changed or if | |
622 | * reassociation is requested. If we are in process of associating with | |
623 | * the selected BSSID, do not trigger new attempt. | |
624 | */ | |
625 | if (wpa_s->reassociate || | |
626 | (os_memcmp(selected->bssid, wpa_s->bssid, ETH_ALEN) != 0 && | |
627 | (wpa_s->wpa_state != WPA_ASSOCIATING || | |
628 | os_memcmp(selected->bssid, wpa_s->pending_bssid, ETH_ALEN) != | |
629 | 0))) { | |
630 | if (wpa_supplicant_scard_init(wpa_s, ssid)) { | |
977b1174 | 631 | wpa_supplicant_req_new_scan(wpa_s, 10, 0); |
09b9df4e JM |
632 | return; |
633 | } | |
634 | wpa_supplicant_associate(wpa_s, selected, ssid); | |
635 | } else { | |
636 | wpa_printf(MSG_DEBUG, "Already associated with the selected " | |
637 | "AP"); | |
638 | } | |
09b9df4e JM |
639 | } |
640 | ||
641 | ||
b55aaa5f JM |
642 | static struct wpa_ssid * |
643 | wpa_supplicant_pick_new_network(struct wpa_supplicant *wpa_s) | |
644 | { | |
645 | int prio; | |
646 | struct wpa_ssid *ssid; | |
647 | ||
648 | for (prio = 0; prio < wpa_s->conf->num_prio; prio++) { | |
649 | for (ssid = wpa_s->conf->pssid[prio]; ssid; ssid = ssid->pnext) | |
650 | { | |
651 | if (ssid->disabled) | |
652 | continue; | |
653 | if (ssid->mode == IEEE80211_MODE_IBSS || | |
654 | ssid->mode == IEEE80211_MODE_AP) | |
655 | return ssid; | |
656 | } | |
657 | } | |
658 | return NULL; | |
659 | } | |
660 | ||
661 | ||
a1fd2ce5 JM |
662 | /* TODO: move the rsn_preauth_scan_result*() to be called from notify.c based |
663 | * on BSS added and BSS changed events */ | |
6ae93185 | 664 | static void wpa_supplicant_rsn_preauth_scan_results( |
a1fd2ce5 | 665 | struct wpa_supplicant *wpa_s, struct wpa_scan_results *scan_res) |
6ae93185 JM |
666 | { |
667 | int i; | |
668 | ||
669 | if (rsn_preauth_scan_results(wpa_s->wpa) < 0) | |
670 | return; | |
671 | ||
a1fd2ce5 | 672 | for (i = scan_res->num - 1; i >= 0; i--) { |
6ae93185 JM |
673 | const u8 *ssid, *rsn; |
674 | struct wpa_scan_res *r; | |
675 | ||
a1fd2ce5 | 676 | r = scan_res->res[i]; |
6ae93185 JM |
677 | |
678 | ssid = wpa_scan_get_ie(r, WLAN_EID_SSID); | |
679 | if (ssid == NULL) | |
680 | continue; | |
681 | ||
682 | rsn = wpa_scan_get_ie(r, WLAN_EID_RSN); | |
683 | if (rsn == NULL) | |
684 | continue; | |
685 | ||
686 | rsn_preauth_scan_result(wpa_s->wpa, r->bssid, ssid, rsn); | |
687 | } | |
688 | ||
689 | } | |
690 | ||
691 | ||
48563d86 JM |
692 | static int wpa_supplicant_need_to_roam(struct wpa_supplicant *wpa_s, |
693 | struct wpa_bss *selected, | |
694 | struct wpa_ssid *ssid, | |
695 | struct wpa_scan_results *scan_res) | |
696 | { | |
697 | size_t i; | |
698 | struct wpa_scan_res *current_bss = NULL; | |
699 | int min_diff; | |
700 | ||
701 | if (wpa_s->reassociate) | |
702 | return 1; /* explicit request to reassociate */ | |
703 | if (wpa_s->wpa_state < WPA_ASSOCIATED) | |
704 | return 1; /* we are not associated; continue */ | |
705 | if (wpa_s->current_ssid == NULL) | |
706 | return 1; /* unknown current SSID */ | |
707 | if (wpa_s->current_ssid != ssid) | |
708 | return 1; /* different network block */ | |
709 | ||
710 | for (i = 0; i < scan_res->num; i++) { | |
711 | struct wpa_scan_res *res = scan_res->res[i]; | |
712 | const u8 *ie; | |
713 | if (os_memcmp(res->bssid, wpa_s->bssid, ETH_ALEN) != 0) | |
714 | continue; | |
715 | ||
716 | ie = wpa_scan_get_ie(res, WLAN_EID_SSID); | |
717 | if (ie == NULL) | |
718 | continue; | |
719 | if (ie[1] != wpa_s->current_ssid->ssid_len || | |
720 | os_memcmp(ie + 2, wpa_s->current_ssid->ssid, ie[1]) != 0) | |
721 | continue; | |
722 | current_bss = res; | |
723 | break; | |
724 | } | |
725 | ||
726 | if (!current_bss) | |
727 | return 1; /* current BSS not seen in scan results */ | |
728 | ||
729 | wpa_printf(MSG_DEBUG, "Considering within-ESS reassociation"); | |
730 | wpa_printf(MSG_DEBUG, "Current BSS: " MACSTR " level=%d", | |
731 | MAC2STR(current_bss->bssid), current_bss->level); | |
732 | wpa_printf(MSG_DEBUG, "Selected BSS: " MACSTR " level=%d", | |
733 | MAC2STR(selected->bssid), selected->level); | |
734 | ||
ac26ebd8 JM |
735 | if (wpa_s->current_ssid->bssid_set && |
736 | os_memcmp(selected->bssid, wpa_s->current_ssid->bssid, ETH_ALEN) == | |
737 | 0) { | |
738 | wpa_printf(MSG_DEBUG, "Allow reassociation - selected BSS has " | |
739 | "preferred BSSID"); | |
740 | return 1; | |
741 | } | |
742 | ||
48563d86 JM |
743 | min_diff = 2; |
744 | if (current_bss->level < 0) { | |
745 | if (current_bss->level < -85) | |
746 | min_diff = 1; | |
747 | else if (current_bss->level < -80) | |
748 | min_diff = 2; | |
749 | else if (current_bss->level < -75) | |
750 | min_diff = 3; | |
751 | else if (current_bss->level < -70) | |
752 | min_diff = 4; | |
753 | else | |
754 | min_diff = 5; | |
755 | } | |
756 | if (abs(current_bss->level - selected->level) < min_diff) { | |
757 | wpa_printf(MSG_DEBUG, "Skip roam - too small difference in " | |
758 | "signal level"); | |
759 | return 0; | |
760 | } | |
761 | ||
762 | return 1; | |
763 | } | |
764 | ||
765 | ||
8d923a4a JM |
766 | static void wpa_supplicant_event_scan_results(struct wpa_supplicant *wpa_s, |
767 | union wpa_event_data *data) | |
09b9df4e | 768 | { |
6fa81a3b | 769 | struct wpa_bss *selected; |
6fc6879b | 770 | struct wpa_ssid *ssid = NULL; |
a1fd2ce5 | 771 | struct wpa_scan_results *scan_res; |
5bc0cdb7 JM |
772 | int ap = 0; |
773 | ||
774 | #ifdef CONFIG_AP | |
775 | if (wpa_s->ap_iface) | |
776 | ap = 1; | |
777 | #endif /* CONFIG_AP */ | |
6fc6879b | 778 | |
cb8564b1 DW |
779 | wpa_supplicant_notify_scanning(wpa_s, 0); |
780 | ||
a1fd2ce5 JM |
781 | scan_res = wpa_supplicant_get_scan_results(wpa_s, |
782 | data ? &data->scan_info : | |
783 | NULL, 1); | |
784 | if (scan_res == NULL) { | |
5bc0cdb7 | 785 | if (wpa_s->conf->ap_scan == 2 || ap) |
6fc6879b JM |
786 | return; |
787 | wpa_printf(MSG_DEBUG, "Failed to get scan results - try " | |
788 | "scanning again"); | |
977b1174 | 789 | wpa_supplicant_req_new_scan(wpa_s, 1, 0); |
09b9df4e | 790 | return; |
6fc6879b JM |
791 | } |
792 | ||
64e58f51 JM |
793 | if (wpa_s->scan_res_handler) { |
794 | wpa_s->scan_res_handler(wpa_s, scan_res); | |
795 | wpa_s->scan_res_handler = NULL; | |
796 | wpa_scan_results_free(scan_res); | |
797 | return; | |
798 | } | |
799 | ||
5bc0cdb7 JM |
800 | if (ap) { |
801 | wpa_printf(MSG_DEBUG, "Ignore scan results in AP mode"); | |
802 | wpa_scan_results_free(scan_res); | |
803 | return; | |
804 | } | |
805 | ||
24f76940 JM |
806 | wpa_printf(MSG_DEBUG, "New scan results available"); |
807 | wpa_msg_ctrl(wpa_s, MSG_INFO, WPA_EVENT_SCAN_RESULTS); | |
808 | wpas_notify_scan_results(wpa_s); | |
6fc6879b | 809 | |
8bac466b JM |
810 | wpas_notify_scan_done(wpa_s, 1); |
811 | ||
a1fd2ce5 JM |
812 | if ((wpa_s->conf->ap_scan == 2 && !wpas_wps_searching(wpa_s))) { |
813 | wpa_scan_results_free(scan_res); | |
6fc6879b | 814 | return; |
a1fd2ce5 | 815 | } |
6fc6879b | 816 | |
3180d7a2 SO |
817 | if (wpa_s->disconnected) { |
818 | wpa_supplicant_set_state(wpa_s, WPA_DISCONNECTED); | |
a1fd2ce5 | 819 | wpa_scan_results_free(scan_res); |
3180d7a2 SO |
820 | return; |
821 | } | |
822 | ||
c2594c36 | 823 | if (bgscan_notify_scan(wpa_s, scan_res) == 1) { |
a1fd2ce5 | 824 | wpa_scan_results_free(scan_res); |
60b94c98 | 825 | return; |
a1fd2ce5 JM |
826 | } |
827 | ||
828 | wpa_supplicant_rsn_preauth_scan_results(wpa_s, scan_res); | |
60b94c98 | 829 | |
a1fd2ce5 | 830 | selected = wpa_supplicant_pick_network(wpa_s, scan_res, &ssid); |
6ae93185 | 831 | |
6fc6879b | 832 | if (selected) { |
48563d86 JM |
833 | int skip; |
834 | skip = !wpa_supplicant_need_to_roam(wpa_s, selected, ssid, | |
835 | scan_res); | |
836 | wpa_scan_results_free(scan_res); | |
837 | if (skip) | |
838 | return; | |
09b9df4e | 839 | wpa_supplicant_connect(wpa_s, selected, ssid); |
6fc6879b | 840 | } else { |
48563d86 | 841 | wpa_scan_results_free(scan_res); |
09b9df4e | 842 | wpa_printf(MSG_DEBUG, "No suitable network found"); |
b55aaa5f JM |
843 | ssid = wpa_supplicant_pick_new_network(wpa_s); |
844 | if (ssid) { | |
845 | wpa_printf(MSG_DEBUG, "Setup a new network"); | |
846 | wpa_supplicant_associate(wpa_s, NULL, ssid); | |
977b1174 JM |
847 | } else { |
848 | int timeout_sec = 5; | |
849 | int timeout_usec = 0; | |
850 | wpa_supplicant_req_new_scan(wpa_s, timeout_sec, | |
851 | timeout_usec); | |
852 | } | |
6fc6879b | 853 | } |
6fc6879b JM |
854 | } |
855 | #endif /* CONFIG_NO_SCAN_PROCESSING */ | |
856 | ||
857 | ||
579ce771 JM |
858 | static int wpa_supplicant_event_associnfo(struct wpa_supplicant *wpa_s, |
859 | union wpa_event_data *data) | |
6fc6879b JM |
860 | { |
861 | int l, len, found = 0, wpa_found, rsn_found; | |
c2a04078 | 862 | const u8 *p; |
6fc6879b JM |
863 | |
864 | wpa_printf(MSG_DEBUG, "Association info event"); | |
865 | if (data->assoc_info.req_ies) | |
866 | wpa_hexdump(MSG_DEBUG, "req_ies", data->assoc_info.req_ies, | |
867 | data->assoc_info.req_ies_len); | |
868 | if (data->assoc_info.resp_ies) | |
869 | wpa_hexdump(MSG_DEBUG, "resp_ies", data->assoc_info.resp_ies, | |
870 | data->assoc_info.resp_ies_len); | |
871 | if (data->assoc_info.beacon_ies) | |
872 | wpa_hexdump(MSG_DEBUG, "beacon_ies", | |
873 | data->assoc_info.beacon_ies, | |
874 | data->assoc_info.beacon_ies_len); | |
4832ecd7 JM |
875 | if (data->assoc_info.freq) |
876 | wpa_printf(MSG_DEBUG, "freq=%u MHz", data->assoc_info.freq); | |
6fc6879b JM |
877 | |
878 | p = data->assoc_info.req_ies; | |
879 | l = data->assoc_info.req_ies_len; | |
880 | ||
881 | /* Go through the IEs and make a copy of the WPA/RSN IE, if present. */ | |
882 | while (p && l >= 2) { | |
883 | len = p[1] + 2; | |
884 | if (len > l) { | |
885 | wpa_hexdump(MSG_DEBUG, "Truncated IE in assoc_info", | |
886 | p, l); | |
887 | break; | |
888 | } | |
889 | if ((p[0] == WLAN_EID_VENDOR_SPECIFIC && p[1] >= 6 && | |
890 | (os_memcmp(&p[2], "\x00\x50\xF2\x01\x01\x00", 6) == 0)) || | |
891 | (p[0] == WLAN_EID_RSN && p[1] >= 2)) { | |
892 | if (wpa_sm_set_assoc_wpa_ie(wpa_s->wpa, p, len)) | |
893 | break; | |
894 | found = 1; | |
895 | wpa_find_assoc_pmkid(wpa_s); | |
896 | break; | |
897 | } | |
898 | l -= len; | |
899 | p += len; | |
900 | } | |
901 | if (!found && data->assoc_info.req_ies) | |
902 | wpa_sm_set_assoc_wpa_ie(wpa_s->wpa, NULL, 0); | |
903 | ||
c2a04078 | 904 | #ifdef CONFIG_IEEE80211R |
62c72d72 JM |
905 | #ifdef CONFIG_SME |
906 | if (wpa_s->sme.auth_alg == WPA_AUTH_ALG_FT) { | |
907 | u8 bssid[ETH_ALEN]; | |
908 | if (wpa_drv_get_bssid(wpa_s, bssid) < 0 || | |
909 | wpa_ft_validate_reassoc_resp(wpa_s->wpa, | |
910 | data->assoc_info.resp_ies, | |
911 | data->assoc_info.resp_ies_len, | |
912 | bssid) < 0) { | |
913 | wpa_printf(MSG_DEBUG, "FT: Validation of " | |
914 | "Reassociation Response failed"); | |
579ce771 JM |
915 | wpa_supplicant_deauthenticate( |
916 | wpa_s, WLAN_REASON_INVALID_IE); | |
917 | return -1; | |
62c72d72 JM |
918 | } |
919 | } | |
62c72d72 | 920 | |
c2a04078 JM |
921 | p = data->assoc_info.resp_ies; |
922 | l = data->assoc_info.resp_ies_len; | |
923 | ||
e7846b68 | 924 | /* Go through the IEs and make a copy of the MDIE, if present. */ |
c2a04078 JM |
925 | while (p && l >= 2) { |
926 | len = p[1] + 2; | |
927 | if (len > l) { | |
928 | wpa_hexdump(MSG_DEBUG, "Truncated IE in assoc_info", | |
929 | p, l); | |
930 | break; | |
931 | } | |
e7846b68 JM |
932 | if (p[0] == WLAN_EID_MOBILITY_DOMAIN && |
933 | p[1] >= MOBILITY_DOMAIN_ID_LEN) { | |
934 | wpa_s->sme.ft_used = 1; | |
935 | os_memcpy(wpa_s->sme.mobility_domain, p + 2, | |
936 | MOBILITY_DOMAIN_ID_LEN); | |
937 | break; | |
938 | } | |
c2a04078 JM |
939 | l -= len; |
940 | p += len; | |
941 | } | |
e7846b68 | 942 | #endif /* CONFIG_SME */ |
c2a04078 | 943 | |
e7846b68 JM |
944 | wpa_sm_set_ft_params(wpa_s->wpa, data->assoc_info.resp_ies, |
945 | data->assoc_info.resp_ies_len); | |
c2a04078 JM |
946 | #endif /* CONFIG_IEEE80211R */ |
947 | ||
6fc6879b JM |
948 | /* WPA/RSN IE from Beacon/ProbeResp */ |
949 | p = data->assoc_info.beacon_ies; | |
950 | l = data->assoc_info.beacon_ies_len; | |
951 | ||
952 | /* Go through the IEs and make a copy of the WPA/RSN IEs, if present. | |
953 | */ | |
954 | wpa_found = rsn_found = 0; | |
955 | while (p && l >= 2) { | |
956 | len = p[1] + 2; | |
957 | if (len > l) { | |
958 | wpa_hexdump(MSG_DEBUG, "Truncated IE in beacon_ies", | |
959 | p, l); | |
960 | break; | |
961 | } | |
962 | if (!wpa_found && | |
963 | p[0] == WLAN_EID_VENDOR_SPECIFIC && p[1] >= 6 && | |
964 | os_memcmp(&p[2], "\x00\x50\xF2\x01\x01\x00", 6) == 0) { | |
965 | wpa_found = 1; | |
966 | wpa_sm_set_ap_wpa_ie(wpa_s->wpa, p, len); | |
967 | } | |
968 | ||
969 | if (!rsn_found && | |
970 | p[0] == WLAN_EID_RSN && p[1] >= 2) { | |
971 | rsn_found = 1; | |
972 | wpa_sm_set_ap_rsn_ie(wpa_s->wpa, p, len); | |
973 | } | |
974 | ||
975 | l -= len; | |
976 | p += len; | |
977 | } | |
978 | ||
979 | if (!wpa_found && data->assoc_info.beacon_ies) | |
980 | wpa_sm_set_ap_wpa_ie(wpa_s->wpa, NULL, 0); | |
981 | if (!rsn_found && data->assoc_info.beacon_ies) | |
982 | wpa_sm_set_ap_rsn_ie(wpa_s->wpa, NULL, 0); | |
983 | if (wpa_found || rsn_found) | |
984 | wpa_s->ap_ies_from_associnfo = 1; | |
4832ecd7 JM |
985 | |
986 | wpa_s->assoc_freq = data->assoc_info.freq; | |
579ce771 JM |
987 | |
988 | return 0; | |
6fc6879b JM |
989 | } |
990 | ||
991 | ||
992 | static void wpa_supplicant_event_assoc(struct wpa_supplicant *wpa_s, | |
993 | union wpa_event_data *data) | |
994 | { | |
995 | u8 bssid[ETH_ALEN]; | |
1d041bec | 996 | int ft_completed; |
8bac466b | 997 | int bssid_changed; |
0194fedb | 998 | struct wpa_driver_capa capa; |
6fc6879b | 999 | |
1d041bec JM |
1000 | #ifdef CONFIG_AP |
1001 | if (wpa_s->ap_iface) { | |
1002 | hostapd_notif_assoc(wpa_s->ap_iface->bss[0], | |
1003 | data->assoc_info.addr, | |
1004 | data->assoc_info.req_ies, | |
1005 | data->assoc_info.req_ies_len); | |
1006 | return; | |
1007 | } | |
1008 | #endif /* CONFIG_AP */ | |
1009 | ||
1010 | ft_completed = wpa_ft_is_completed(wpa_s->wpa); | |
579ce771 JM |
1011 | if (data && wpa_supplicant_event_associnfo(wpa_s, data) < 0) |
1012 | return; | |
6fc6879b JM |
1013 | |
1014 | wpa_supplicant_set_state(wpa_s, WPA_ASSOCIATED); | |
c2a04078 | 1015 | if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_USER_SPACE_MLME) |
6fc6879b | 1016 | os_memcpy(bssid, wpa_s->bssid, ETH_ALEN); |
c2a04078 | 1017 | if ((wpa_s->drv_flags & WPA_DRIVER_FLAGS_USER_SPACE_MLME) || |
6fc6879b JM |
1018 | (wpa_drv_get_bssid(wpa_s, bssid) >= 0 && |
1019 | os_memcmp(bssid, wpa_s->bssid, ETH_ALEN) != 0)) { | |
1020 | wpa_msg(wpa_s, MSG_DEBUG, "Associated to a new BSS: BSSID=" | |
1021 | MACSTR, MAC2STR(bssid)); | |
8bac466b | 1022 | bssid_changed = os_memcmp(wpa_s->bssid, bssid, ETH_ALEN); |
6fc6879b JM |
1023 | os_memcpy(wpa_s->bssid, bssid, ETH_ALEN); |
1024 | os_memset(wpa_s->pending_bssid, 0, ETH_ALEN); | |
8bac466b JM |
1025 | if (bssid_changed) |
1026 | wpas_notify_bssid_changed(wpa_s); | |
1027 | ||
6fc6879b JM |
1028 | if (wpa_supplicant_dynamic_keys(wpa_s) && !ft_completed) { |
1029 | wpa_clear_keys(wpa_s, bssid); | |
1030 | } | |
1031 | if (wpa_supplicant_select_config(wpa_s) < 0) { | |
1032 | wpa_supplicant_disassociate( | |
1033 | wpa_s, WLAN_REASON_DEAUTH_LEAVING); | |
1034 | return; | |
1035 | } | |
8f770587 JM |
1036 | if (wpa_s->current_ssid) { |
1037 | struct wpa_bss *bss = NULL; | |
1038 | struct wpa_ssid *ssid = wpa_s->current_ssid; | |
1039 | if (ssid->ssid_len > 0) | |
1040 | bss = wpa_bss_get(wpa_s, bssid, | |
1041 | ssid->ssid, ssid->ssid_len); | |
1042 | if (!bss) | |
1043 | bss = wpa_bss_get_bssid(wpa_s, bssid); | |
1044 | if (bss) | |
1045 | wpa_s->current_bss = bss; | |
1046 | } | |
6fc6879b JM |
1047 | } |
1048 | ||
62fa124c JM |
1049 | #ifdef CONFIG_SME |
1050 | os_memcpy(wpa_s->sme.prev_bssid, bssid, ETH_ALEN); | |
1051 | wpa_s->sme.prev_bssid_set = 1; | |
1052 | #endif /* CONFIG_SME */ | |
1053 | ||
6fc6879b JM |
1054 | wpa_msg(wpa_s, MSG_INFO, "Associated with " MACSTR, MAC2STR(bssid)); |
1055 | if (wpa_s->current_ssid) { | |
1056 | /* When using scanning (ap_scan=1), SIM PC/SC interface can be | |
1057 | * initialized before association, but for other modes, | |
1058 | * initialize PC/SC here, if the current configuration needs | |
1059 | * smartcard or SIM/USIM. */ | |
1060 | wpa_supplicant_scard_init(wpa_s, wpa_s->current_ssid); | |
1061 | } | |
1062 | wpa_sm_notify_assoc(wpa_s->wpa, bssid); | |
3f967fe0 JM |
1063 | if (wpa_s->l2) |
1064 | l2_packet_notify_auth_start(wpa_s->l2); | |
6fc6879b JM |
1065 | |
1066 | /* | |
1067 | * Set portEnabled first to FALSE in order to get EAP state machine out | |
1068 | * of the SUCCESS state and eapSuccess cleared. Without this, EAPOL PAE | |
1069 | * state machine may transit to AUTHENTICATING state based on obsolete | |
1070 | * eapSuccess and then trigger BE_AUTH to SUCCESS and PAE to | |
1071 | * AUTHENTICATED without ever giving chance to EAP state machine to | |
1072 | * reset the state. | |
1073 | */ | |
1074 | if (!ft_completed) { | |
1075 | eapol_sm_notify_portEnabled(wpa_s->eapol, FALSE); | |
1076 | eapol_sm_notify_portValid(wpa_s->eapol, FALSE); | |
1077 | } | |
56586197 | 1078 | if (wpa_key_mgmt_wpa_psk(wpa_s->key_mgmt) || ft_completed) |
6fc6879b JM |
1079 | eapol_sm_notify_eap_success(wpa_s->eapol, FALSE); |
1080 | /* 802.1X::portControl = Auto */ | |
1081 | eapol_sm_notify_portEnabled(wpa_s->eapol, TRUE); | |
1082 | wpa_s->eapol_received = 0; | |
1083 | if (wpa_s->key_mgmt == WPA_KEY_MGMT_NONE || | |
9c972abb JM |
1084 | wpa_s->key_mgmt == WPA_KEY_MGMT_WPA_NONE || |
1085 | (wpa_s->current_ssid && | |
1086 | wpa_s->current_ssid->mode == IEEE80211_MODE_IBSS)) { | |
6fc6879b JM |
1087 | wpa_supplicant_cancel_auth_timeout(wpa_s); |
1088 | wpa_supplicant_set_state(wpa_s, WPA_COMPLETED); | |
1089 | } else if (!ft_completed) { | |
1090 | /* Timeout for receiving the first EAPOL packet */ | |
1091 | wpa_supplicant_req_auth_timeout(wpa_s, 10, 0); | |
1092 | } | |
1093 | wpa_supplicant_cancel_scan(wpa_s); | |
1094 | ||
c2a04078 | 1095 | if ((wpa_s->drv_flags & WPA_DRIVER_FLAGS_4WAY_HANDSHAKE) && |
56586197 | 1096 | wpa_key_mgmt_wpa_psk(wpa_s->key_mgmt)) { |
6fc6879b JM |
1097 | /* |
1098 | * We are done; the driver will take care of RSN 4-way | |
1099 | * handshake. | |
1100 | */ | |
1101 | wpa_supplicant_cancel_auth_timeout(wpa_s); | |
1102 | wpa_supplicant_set_state(wpa_s, WPA_COMPLETED); | |
1103 | eapol_sm_notify_portValid(wpa_s->eapol, TRUE); | |
1104 | eapol_sm_notify_eap_success(wpa_s->eapol, TRUE); | |
1105 | } | |
1ff73338 JM |
1106 | |
1107 | if (wpa_s->pending_eapol_rx) { | |
1108 | struct os_time now, age; | |
1109 | os_get_time(&now); | |
1110 | os_time_sub(&now, &wpa_s->pending_eapol_rx_time, &age); | |
1111 | if (age.sec == 0 && age.usec < 100000 && | |
1112 | os_memcmp(wpa_s->pending_eapol_rx_src, bssid, ETH_ALEN) == | |
1113 | 0) { | |
1114 | wpa_printf(MSG_DEBUG, "Process pending EAPOL frame " | |
1115 | "that was received just before association " | |
1116 | "notification"); | |
1117 | wpa_supplicant_rx_eapol( | |
1118 | wpa_s, wpa_s->pending_eapol_rx_src, | |
1119 | wpabuf_head(wpa_s->pending_eapol_rx), | |
1120 | wpabuf_len(wpa_s->pending_eapol_rx)); | |
1121 | } | |
1122 | wpabuf_free(wpa_s->pending_eapol_rx); | |
1123 | wpa_s->pending_eapol_rx = NULL; | |
1124 | } | |
60b94c98 JM |
1125 | |
1126 | #ifdef CONFIG_BGSCAN | |
1127 | if (wpa_s->current_ssid != wpa_s->bgscan_ssid) { | |
1128 | bgscan_deinit(wpa_s); | |
1129 | if (wpa_s->current_ssid && wpa_s->current_ssid->bgscan) { | |
1130 | if (bgscan_init(wpa_s, wpa_s->current_ssid)) { | |
1131 | wpa_printf(MSG_DEBUG, "Failed to initialize " | |
1132 | "bgscan"); | |
1133 | /* | |
1134 | * Live without bgscan; it is only used as a | |
1135 | * roaming optimization, so the initial | |
1136 | * connection is not affected. | |
1137 | */ | |
1138 | } else | |
1139 | wpa_s->bgscan_ssid = wpa_s->current_ssid; | |
1140 | } else | |
1141 | wpa_s->bgscan_ssid = NULL; | |
1142 | } | |
1143 | #endif /* CONFIG_BGSCAN */ | |
0194fedb JB |
1144 | |
1145 | if ((wpa_s->key_mgmt == WPA_KEY_MGMT_NONE || | |
1146 | wpa_s->key_mgmt == WPA_KEY_MGMT_IEEE8021X_NO_WPA) && | |
1147 | wpa_s->current_ssid && wpa_drv_get_capa(wpa_s, &capa) == 0 && | |
1148 | capa.flags & WPA_DRIVER_FLAGS_SET_KEYS_AFTER_ASSOC_DONE) { | |
1149 | /* Set static WEP keys again */ | |
1150 | wpa_set_wep_keys(wpa_s, wpa_s->current_ssid); | |
1151 | } | |
6fc6879b JM |
1152 | } |
1153 | ||
1154 | ||
0544b242 JM |
1155 | static void wpa_supplicant_event_disassoc(struct wpa_supplicant *wpa_s, |
1156 | u16 reason_code) | |
6fc6879b JM |
1157 | { |
1158 | const u8 *bssid; | |
6d6f4bb8 JM |
1159 | #ifdef CONFIG_SME |
1160 | int authenticating; | |
1161 | u8 prev_pending_bssid[ETH_ALEN]; | |
1162 | ||
1163 | authenticating = wpa_s->wpa_state == WPA_AUTHENTICATING; | |
1164 | os_memcpy(prev_pending_bssid, wpa_s->pending_bssid, ETH_ALEN); | |
1165 | #endif /* CONFIG_SME */ | |
6fc6879b JM |
1166 | |
1167 | if (wpa_s->key_mgmt == WPA_KEY_MGMT_WPA_NONE) { | |
1168 | /* | |
1169 | * At least Host AP driver and a Prism3 card seemed to be | |
1170 | * generating streams of disconnected events when configuring | |
1171 | * IBSS for WPA-None. Ignore them for now. | |
1172 | */ | |
1173 | wpa_printf(MSG_DEBUG, "Disconnect event - ignore in " | |
1174 | "IBSS/WPA-None mode"); | |
1175 | return; | |
1176 | } | |
1177 | ||
1178 | if (wpa_s->wpa_state == WPA_4WAY_HANDSHAKE && | |
56586197 | 1179 | wpa_key_mgmt_wpa_psk(wpa_s->key_mgmt)) { |
6fc6879b JM |
1180 | wpa_msg(wpa_s, MSG_INFO, "WPA: 4-Way Handshake failed - " |
1181 | "pre-shared key may be incorrect"); | |
1182 | } | |
1183 | if (wpa_s->wpa_state >= WPA_ASSOCIATED) | |
1184 | wpa_supplicant_req_scan(wpa_s, 0, 100000); | |
1185 | bssid = wpa_s->bssid; | |
a8e16edc | 1186 | if (is_zero_ether_addr(bssid)) |
6fc6879b JM |
1187 | bssid = wpa_s->pending_bssid; |
1188 | wpa_blacklist_add(wpa_s, bssid); | |
1189 | wpa_sm_notify_disassoc(wpa_s->wpa); | |
0544b242 JM |
1190 | wpa_msg(wpa_s, MSG_INFO, WPA_EVENT_DISCONNECTED "bssid=" MACSTR |
1191 | " reason=%d", | |
1192 | MAC2STR(bssid), reason_code); | |
6fc6879b | 1193 | if (wpa_supplicant_dynamic_keys(wpa_s)) { |
0544b242 | 1194 | wpa_printf(MSG_DEBUG, "Disconnect event - remove keys"); |
6fc6879b JM |
1195 | wpa_s->keys_cleared = 0; |
1196 | wpa_clear_keys(wpa_s, wpa_s->bssid); | |
1197 | } | |
1198 | wpa_supplicant_mark_disassoc(wpa_s); | |
60b94c98 | 1199 | bgscan_deinit(wpa_s); |
3b038d79 | 1200 | wpa_s->bgscan_ssid = NULL; |
6d6f4bb8 JM |
1201 | #ifdef CONFIG_SME |
1202 | if (authenticating && | |
1203 | (wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME)) { | |
1204 | /* | |
1205 | * mac80211-workaround to force deauth on failed auth cmd, | |
1206 | * requires us to remain in authenticating state to allow the | |
1207 | * second authentication attempt to be continued properly. | |
1208 | */ | |
1209 | wpa_printf(MSG_DEBUG, "SME: Allow pending authentication to " | |
1210 | "proceed after disconnection event"); | |
1211 | wpa_supplicant_set_state(wpa_s, WPA_AUTHENTICATING); | |
1212 | os_memcpy(wpa_s->pending_bssid, prev_pending_bssid, ETH_ALEN); | |
1213 | } | |
1214 | #endif /* CONFIG_SME */ | |
6fc6879b JM |
1215 | } |
1216 | ||
1217 | ||
46690a3b JM |
1218 | #ifdef CONFIG_DELAYED_MIC_ERROR_REPORT |
1219 | static void wpa_supplicant_delayed_mic_error_report(void *eloop_ctx, | |
1220 | void *sock_ctx) | |
1221 | { | |
1222 | struct wpa_supplicant *wpa_s = eloop_ctx; | |
1223 | ||
1224 | if (!wpa_s->pending_mic_error_report) | |
1225 | return; | |
1226 | ||
1227 | wpa_printf(MSG_DEBUG, "WPA: Sending pending MIC error report"); | |
1228 | wpa_sm_key_request(wpa_s->wpa, 1, wpa_s->pending_mic_error_pairwise); | |
1229 | wpa_s->pending_mic_error_report = 0; | |
1230 | } | |
1231 | #endif /* CONFIG_DELAYED_MIC_ERROR_REPORT */ | |
1232 | ||
1233 | ||
6fc6879b JM |
1234 | static void |
1235 | wpa_supplicant_event_michael_mic_failure(struct wpa_supplicant *wpa_s, | |
1236 | union wpa_event_data *data) | |
1237 | { | |
1238 | int pairwise; | |
1239 | struct os_time t; | |
1240 | ||
1241 | wpa_msg(wpa_s, MSG_WARNING, "Michael MIC failure detected"); | |
1242 | pairwise = (data && data->michael_mic_failure.unicast); | |
6fc6879b | 1243 | os_get_time(&t); |
46690a3b JM |
1244 | if ((wpa_s->last_michael_mic_error && |
1245 | t.sec - wpa_s->last_michael_mic_error <= 60) || | |
1246 | wpa_s->pending_mic_error_report) { | |
1247 | if (wpa_s->pending_mic_error_report) { | |
1248 | /* | |
1249 | * Send the pending MIC error report immediately since | |
1250 | * we are going to start countermeasures and AP better | |
1251 | * do the same. | |
1252 | */ | |
1253 | wpa_sm_key_request(wpa_s->wpa, 1, | |
1254 | wpa_s->pending_mic_error_pairwise); | |
1255 | } | |
1256 | ||
1257 | /* Send the new MIC error report immediately since we are going | |
1258 | * to start countermeasures and AP better do the same. | |
1259 | */ | |
1260 | wpa_sm_key_request(wpa_s->wpa, 1, pairwise); | |
1261 | ||
6fc6879b JM |
1262 | /* initialize countermeasures */ |
1263 | wpa_s->countermeasures = 1; | |
1264 | wpa_msg(wpa_s, MSG_WARNING, "TKIP countermeasures started"); | |
1265 | ||
1266 | /* | |
1267 | * Need to wait for completion of request frame. We do not get | |
1268 | * any callback for the message completion, so just wait a | |
1269 | * short while and hope for the best. */ | |
1270 | os_sleep(0, 10000); | |
1271 | ||
1272 | wpa_drv_set_countermeasures(wpa_s, 1); | |
1273 | wpa_supplicant_deauthenticate(wpa_s, | |
1274 | WLAN_REASON_MICHAEL_MIC_FAILURE); | |
1275 | eloop_cancel_timeout(wpa_supplicant_stop_countermeasures, | |
1276 | wpa_s, NULL); | |
1277 | eloop_register_timeout(60, 0, | |
1278 | wpa_supplicant_stop_countermeasures, | |
1279 | wpa_s, NULL); | |
1280 | /* TODO: mark the AP rejected for 60 second. STA is | |
1281 | * allowed to associate with another AP.. */ | |
46690a3b JM |
1282 | } else { |
1283 | #ifdef CONFIG_DELAYED_MIC_ERROR_REPORT | |
1284 | if (wpa_s->mic_errors_seen) { | |
1285 | /* | |
1286 | * Reduce the effectiveness of Michael MIC error | |
1287 | * reports as a means for attacking against TKIP if | |
1288 | * more than one MIC failure is noticed with the same | |
1289 | * PTK. We delay the transmission of the reports by a | |
1290 | * random time between 0 and 60 seconds in order to | |
1291 | * force the attacker wait 60 seconds before getting | |
1292 | * the information on whether a frame resulted in a MIC | |
1293 | * failure. | |
1294 | */ | |
1295 | u8 rval[4]; | |
1296 | int sec; | |
1297 | ||
1298 | if (os_get_random(rval, sizeof(rval)) < 0) | |
1299 | sec = os_random() % 60; | |
1300 | else | |
1301 | sec = WPA_GET_BE32(rval) % 60; | |
1302 | wpa_printf(MSG_DEBUG, "WPA: Delay MIC error report %d " | |
1303 | "seconds", sec); | |
1304 | wpa_s->pending_mic_error_report = 1; | |
1305 | wpa_s->pending_mic_error_pairwise = pairwise; | |
1306 | eloop_cancel_timeout( | |
1307 | wpa_supplicant_delayed_mic_error_report, | |
1308 | wpa_s, NULL); | |
1309 | eloop_register_timeout( | |
1310 | sec, os_random() % 1000000, | |
1311 | wpa_supplicant_delayed_mic_error_report, | |
1312 | wpa_s, NULL); | |
1313 | } else { | |
1314 | wpa_sm_key_request(wpa_s->wpa, 1, pairwise); | |
1315 | } | |
1316 | #else /* CONFIG_DELAYED_MIC_ERROR_REPORT */ | |
1317 | wpa_sm_key_request(wpa_s->wpa, 1, pairwise); | |
1318 | #endif /* CONFIG_DELAYED_MIC_ERROR_REPORT */ | |
6fc6879b JM |
1319 | } |
1320 | wpa_s->last_michael_mic_error = t.sec; | |
46690a3b | 1321 | wpa_s->mic_errors_seen++; |
6fc6879b JM |
1322 | } |
1323 | ||
1324 | ||
a83d9c96 SL |
1325 | #ifdef CONFIG_TERMINATE_ONLASTIF |
1326 | static int any_interfaces(struct wpa_supplicant *head) | |
1327 | { | |
1328 | struct wpa_supplicant *wpa_s; | |
1329 | ||
1330 | for (wpa_s = head; wpa_s != NULL; wpa_s = wpa_s->next) | |
1331 | if (!wpa_s->interface_removed) | |
1332 | return 1; | |
1333 | return 0; | |
1334 | } | |
1335 | #endif /* CONFIG_TERMINATE_ONLASTIF */ | |
1336 | ||
1337 | ||
6fc6879b JM |
1338 | static void |
1339 | wpa_supplicant_event_interface_status(struct wpa_supplicant *wpa_s, | |
1340 | union wpa_event_data *data) | |
1341 | { | |
1342 | if (os_strcmp(wpa_s->ifname, data->interface_status.ifname) != 0) | |
1343 | return; | |
1344 | ||
1345 | switch (data->interface_status.ievent) { | |
1346 | case EVENT_INTERFACE_ADDED: | |
1347 | if (!wpa_s->interface_removed) | |
1348 | break; | |
1349 | wpa_s->interface_removed = 0; | |
1350 | wpa_printf(MSG_DEBUG, "Configured interface was added."); | |
1351 | if (wpa_supplicant_driver_init(wpa_s) < 0) { | |
1352 | wpa_printf(MSG_INFO, "Failed to initialize the driver " | |
1353 | "after interface was added."); | |
1354 | } | |
1355 | break; | |
1356 | case EVENT_INTERFACE_REMOVED: | |
1357 | wpa_printf(MSG_DEBUG, "Configured interface was removed."); | |
1358 | wpa_s->interface_removed = 1; | |
1359 | wpa_supplicant_mark_disassoc(wpa_s); | |
1360 | l2_packet_deinit(wpa_s->l2); | |
1361 | wpa_s->l2 = NULL; | |
a83d9c96 SL |
1362 | #ifdef CONFIG_TERMINATE_ONLASTIF |
1363 | /* check if last interface */ | |
1364 | if (!any_interfaces(wpa_s->global->ifaces)) | |
1365 | eloop_terminate(); | |
1366 | #endif /* CONFIG_TERMINATE_ONLASTIF */ | |
6fc6879b JM |
1367 | break; |
1368 | } | |
1369 | } | |
1370 | ||
1371 | ||
1372 | #ifdef CONFIG_PEERKEY | |
1373 | static void | |
1374 | wpa_supplicant_event_stkstart(struct wpa_supplicant *wpa_s, | |
1375 | union wpa_event_data *data) | |
1376 | { | |
1377 | if (data == NULL) | |
1378 | return; | |
1379 | wpa_sm_stkstart(wpa_s->wpa, data->stkstart.peer); | |
1380 | } | |
1381 | #endif /* CONFIG_PEERKEY */ | |
1382 | ||
1383 | ||
1384 | #ifdef CONFIG_IEEE80211R | |
1385 | static void | |
1386 | wpa_supplicant_event_ft_response(struct wpa_supplicant *wpa_s, | |
1387 | union wpa_event_data *data) | |
1388 | { | |
1389 | if (data == NULL) | |
1390 | return; | |
1391 | ||
1392 | if (wpa_ft_process_response(wpa_s->wpa, data->ft_ies.ies, | |
1393 | data->ft_ies.ies_len, | |
1394 | data->ft_ies.ft_action, | |
babfbf15 JM |
1395 | data->ft_ies.target_ap, |
1396 | data->ft_ies.ric_ies, | |
1397 | data->ft_ies.ric_ies_len) < 0) { | |
6fc6879b JM |
1398 | /* TODO: prevent MLME/driver from trying to associate? */ |
1399 | } | |
1400 | } | |
1401 | #endif /* CONFIG_IEEE80211R */ | |
1402 | ||
1403 | ||
11ef8d35 JM |
1404 | #ifdef CONFIG_IBSS_RSN |
1405 | static void wpa_supplicant_event_ibss_rsn_start(struct wpa_supplicant *wpa_s, | |
1406 | union wpa_event_data *data) | |
1407 | { | |
1408 | if (data == NULL) | |
1409 | return; | |
1410 | ibss_rsn_start(wpa_s->ibss_rsn, data->ibss_rsn_start.peer); | |
1411 | } | |
1412 | #endif /* CONFIG_IBSS_RSN */ | |
1413 | ||
1414 | ||
036f7c4a JM |
1415 | #ifdef CONFIG_IEEE80211R |
1416 | static void ft_rx_action(struct wpa_supplicant *wpa_s, const u8 *data, | |
1417 | size_t len) | |
1418 | { | |
1419 | const u8 *sta_addr, *target_ap_addr; | |
1420 | u16 status; | |
1421 | ||
1422 | wpa_hexdump(MSG_MSGDUMP, "FT: RX Action", data, len); | |
1423 | if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME)) | |
1424 | return; /* only SME case supported for now */ | |
1425 | if (len < 1 + 2 * ETH_ALEN + 2) | |
1426 | return; | |
1427 | if (data[0] != 2) | |
1428 | return; /* Only FT Action Response is supported for now */ | |
1429 | sta_addr = data + 1; | |
1430 | target_ap_addr = data + 1 + ETH_ALEN; | |
1431 | status = WPA_GET_LE16(data + 1 + 2 * ETH_ALEN); | |
1432 | wpa_printf(MSG_DEBUG, "FT: Received FT Action Response: STA " MACSTR | |
1433 | " TargetAP " MACSTR " status %u", | |
1434 | MAC2STR(sta_addr), MAC2STR(target_ap_addr), status); | |
1435 | ||
1436 | if (os_memcmp(sta_addr, wpa_s->own_addr, ETH_ALEN) != 0) { | |
1437 | wpa_printf(MSG_DEBUG, "FT: Foreign STA Address " MACSTR | |
1438 | " in FT Action Response", MAC2STR(sta_addr)); | |
1439 | return; | |
1440 | } | |
1441 | ||
1442 | if (status) { | |
1443 | wpa_printf(MSG_DEBUG, "FT: FT Action Response indicates " | |
1444 | "failure (status code %d)", status); | |
1445 | /* TODO: report error to FT code(?) */ | |
1446 | return; | |
1447 | } | |
1448 | ||
1449 | if (wpa_ft_process_response(wpa_s->wpa, data + 1 + 2 * ETH_ALEN + 2, | |
1450 | len - (1 + 2 * ETH_ALEN + 2), 1, | |
1451 | target_ap_addr, NULL, 0) < 0) | |
1452 | return; | |
1453 | ||
fe191985 JM |
1454 | #ifdef CONFIG_SME |
1455 | { | |
1456 | struct wpa_bss *bss; | |
1457 | bss = wpa_bss_get_bssid(wpa_s, target_ap_addr); | |
1458 | if (bss) | |
1459 | wpa_s->sme.freq = bss->freq; | |
62c72d72 | 1460 | wpa_s->sme.auth_alg = WPA_AUTH_ALG_FT; |
fe191985 JM |
1461 | sme_associate(wpa_s, WPAS_MODE_INFRA, target_ap_addr, |
1462 | WLAN_AUTH_FT); | |
1463 | } | |
1464 | #endif /* CONFIG_SME */ | |
036f7c4a JM |
1465 | } |
1466 | #endif /* CONFIG_IEEE80211R */ | |
1467 | ||
1468 | ||
9646a8ab | 1469 | void wpa_supplicant_event(void *ctx, enum wpa_event_type event, |
6fc6879b JM |
1470 | union wpa_event_data *data) |
1471 | { | |
1472 | struct wpa_supplicant *wpa_s = ctx; | |
0544b242 | 1473 | u16 reason_code = 0; |
6fc6879b | 1474 | |
8401a6b0 JM |
1475 | if (wpa_s->wpa_state == WPA_INTERFACE_DISABLED && |
1476 | event != EVENT_INTERFACE_ENABLED && | |
1477 | event != EVENT_INTERFACE_STATUS) { | |
1478 | wpa_printf(MSG_DEBUG, "Ignore event %d while interface is " | |
1479 | "disabled", event); | |
1480 | return; | |
1481 | } | |
1482 | ||
9b7124b2 JM |
1483 | wpa_printf(MSG_DEBUG, "Event %d received on interface %s", |
1484 | event, wpa_s->ifname); | |
1485 | ||
6fc6879b | 1486 | switch (event) { |
c2a04078 JM |
1487 | case EVENT_AUTH: |
1488 | sme_event_auth(wpa_s, data); | |
1489 | break; | |
6fc6879b JM |
1490 | case EVENT_ASSOC: |
1491 | wpa_supplicant_event_assoc(wpa_s, data); | |
1492 | break; | |
1493 | case EVENT_DISASSOC: | |
159dd3e2 | 1494 | wpa_printf(MSG_DEBUG, "Disassociation notification"); |
2e75a2b3 JM |
1495 | if (data) { |
1496 | wpa_printf(MSG_DEBUG, " * reason %u", | |
1497 | data->disassoc_info.reason_code); | |
1498 | if (data->disassoc_info.addr) | |
1499 | wpa_printf(MSG_DEBUG, " * address " MACSTR, | |
1500 | MAC2STR(data->disassoc_info.addr)); | |
1501 | } | |
1d041bec JM |
1502 | #ifdef CONFIG_AP |
1503 | if (wpa_s->ap_iface && data) { | |
1504 | hostapd_notif_disassoc(wpa_s->ap_iface->bss[0], | |
1505 | data->disassoc_info.addr); | |
1506 | break; | |
1507 | } | |
1508 | #endif /* CONFIG_AP */ | |
0544b242 JM |
1509 | if (data) |
1510 | reason_code = data->deauth_info.reason_code; | |
0e379654 JM |
1511 | if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME) |
1512 | sme_event_disassoc(wpa_s, data); | |
a84ed99e JM |
1513 | /* fall through */ |
1514 | case EVENT_DEAUTH: | |
0544b242 | 1515 | if (event == EVENT_DEAUTH) { |
159dd3e2 | 1516 | wpa_printf(MSG_DEBUG, "Deauthentication notification"); |
2e75a2b3 | 1517 | if (data) { |
0544b242 | 1518 | reason_code = data->deauth_info.reason_code; |
2e75a2b3 JM |
1519 | wpa_printf(MSG_DEBUG, " * reason %u", |
1520 | data->deauth_info.reason_code); | |
1521 | if (data->deauth_info.addr) { | |
1522 | wpa_printf(MSG_DEBUG, " * address " | |
1523 | MACSTR, | |
1524 | MAC2STR(data->deauth_info. | |
1525 | addr)); | |
1526 | } | |
1527 | } | |
0544b242 | 1528 | } |
1d041bec JM |
1529 | #ifdef CONFIG_AP |
1530 | if (wpa_s->ap_iface && data) { | |
1531 | hostapd_notif_disassoc(wpa_s->ap_iface->bss[0], | |
1532 | data->deauth_info.addr); | |
1533 | break; | |
1534 | } | |
1535 | #endif /* CONFIG_AP */ | |
0544b242 | 1536 | wpa_supplicant_event_disassoc(wpa_s, reason_code); |
6fc6879b JM |
1537 | break; |
1538 | case EVENT_MICHAEL_MIC_FAILURE: | |
1539 | wpa_supplicant_event_michael_mic_failure(wpa_s, data); | |
1540 | break; | |
1541 | #ifndef CONFIG_NO_SCAN_PROCESSING | |
1542 | case EVENT_SCAN_RESULTS: | |
8d923a4a | 1543 | wpa_supplicant_event_scan_results(wpa_s, data); |
6fc6879b JM |
1544 | break; |
1545 | #endif /* CONFIG_NO_SCAN_PROCESSING */ | |
1546 | case EVENT_ASSOCINFO: | |
1547 | wpa_supplicant_event_associnfo(wpa_s, data); | |
1548 | break; | |
1549 | case EVENT_INTERFACE_STATUS: | |
1550 | wpa_supplicant_event_interface_status(wpa_s, data); | |
1551 | break; | |
1552 | case EVENT_PMKID_CANDIDATE: | |
1553 | wpa_supplicant_event_pmkid_candidate(wpa_s, data); | |
1554 | break; | |
1555 | #ifdef CONFIG_PEERKEY | |
1556 | case EVENT_STKSTART: | |
1557 | wpa_supplicant_event_stkstart(wpa_s, data); | |
1558 | break; | |
1559 | #endif /* CONFIG_PEERKEY */ | |
1560 | #ifdef CONFIG_IEEE80211R | |
1561 | case EVENT_FT_RESPONSE: | |
1562 | wpa_supplicant_event_ft_response(wpa_s, data); | |
1563 | break; | |
1564 | #endif /* CONFIG_IEEE80211R */ | |
11ef8d35 JM |
1565 | #ifdef CONFIG_IBSS_RSN |
1566 | case EVENT_IBSS_RSN_START: | |
1567 | wpa_supplicant_event_ibss_rsn_start(wpa_s, data); | |
1568 | break; | |
1569 | #endif /* CONFIG_IBSS_RSN */ | |
efa46078 JM |
1570 | case EVENT_ASSOC_REJECT: |
1571 | sme_event_assoc_reject(wpa_s, data); | |
1572 | break; | |
da1fb17c JM |
1573 | case EVENT_AUTH_TIMED_OUT: |
1574 | sme_event_auth_timed_out(wpa_s, data); | |
1575 | break; | |
1576 | case EVENT_ASSOC_TIMED_OUT: | |
1577 | sme_event_assoc_timed_out(wpa_s, data); | |
1578 | break; | |
f8b1f695 JM |
1579 | #ifdef CONFIG_AP |
1580 | case EVENT_TX_STATUS: | |
1581 | if (wpa_s->ap_iface == NULL) | |
1582 | break; | |
1583 | switch (data->tx_status.type) { | |
1584 | case WLAN_FC_TYPE_MGMT: | |
1585 | ap_mgmt_tx_cb(wpa_s, data->tx_status.data, | |
1586 | data->tx_status.data_len, | |
1587 | data->tx_status.stype, | |
1588 | data->tx_status.ack); | |
1589 | break; | |
1590 | case WLAN_FC_TYPE_DATA: | |
1591 | ap_tx_status(wpa_s, data->tx_status.dst, | |
1592 | data->tx_status.data, | |
1593 | data->tx_status.data_len, | |
1594 | data->tx_status.ack); | |
1595 | break; | |
1596 | } | |
1597 | break; | |
1598 | case EVENT_RX_FROM_UNKNOWN: | |
1599 | if (wpa_s->ap_iface == NULL) | |
1600 | break; | |
fdbe50ed | 1601 | ap_rx_from_unknown_sta(wpa_s, data->rx_from_unknown.frame, |
f8b1f695 JM |
1602 | data->rx_from_unknown.len); |
1603 | break; | |
1604 | case EVENT_RX_MGMT: | |
1605 | if (wpa_s->ap_iface == NULL) | |
1606 | break; | |
2a8b7416 | 1607 | ap_mgmt_rx(wpa_s, &data->rx_mgmt); |
f8b1f695 JM |
1608 | break; |
1609 | #endif /* CONFIG_AP */ | |
036f7c4a JM |
1610 | case EVENT_RX_ACTION: |
1611 | wpa_printf(MSG_DEBUG, "Received Action frame: SA=" MACSTR | |
1612 | " Category=%u DataLen=%d freq=%d MHz", | |
1613 | MAC2STR(data->rx_action.sa), | |
1614 | data->rx_action.category, (int) data->rx_action.len, | |
1615 | data->rx_action.freq); | |
1616 | #ifdef CONFIG_IEEE80211R | |
1617 | if (data->rx_action.category == WLAN_ACTION_FT) { | |
1618 | ft_rx_action(wpa_s, data->rx_action.data, | |
1619 | data->rx_action.len); | |
1620 | break; | |
1621 | } | |
1622 | #endif /* CONFIG_IEEE80211R */ | |
1623 | break; | |
245519e0 JM |
1624 | #ifdef CONFIG_CLIENT_MLME |
1625 | case EVENT_MLME_RX: { | |
1626 | struct ieee80211_rx_status rx_status; | |
1627 | os_memset(&rx_status, 0, sizeof(rx_status)); | |
1628 | rx_status.freq = data->mlme_rx.freq; | |
1629 | rx_status.channel = data->mlme_rx.channel; | |
1630 | rx_status.ssi = data->mlme_rx.ssi; | |
1631 | ieee80211_sta_rx(wpa_s, data->mlme_rx.buf, data->mlme_rx.len, | |
1632 | &rx_status); | |
1633 | break; | |
1634 | } | |
1635 | #endif /* CONFIG_CLIENT_MLME */ | |
a8e0505b JM |
1636 | case EVENT_EAPOL_RX: |
1637 | wpa_supplicant_rx_eapol(wpa_s, data->eapol_rx.src, | |
1638 | data->eapol_rx.data, | |
1639 | data->eapol_rx.data_len); | |
1640 | break; | |
e2f74005 JM |
1641 | case EVENT_SIGNAL_CHANGE: |
1642 | bgscan_notify_signal_change( | |
60a972a6 JM |
1643 | wpa_s, data->signal_change.above_threshold, |
1644 | data->signal_change.current_signal); | |
e2f74005 | 1645 | break; |
8401a6b0 JM |
1646 | case EVENT_INTERFACE_ENABLED: |
1647 | wpa_printf(MSG_DEBUG, "Interface was enabled"); | |
1648 | if (wpa_s->wpa_state == WPA_INTERFACE_DISABLED) { | |
1649 | wpa_supplicant_set_state(wpa_s, | |
1650 | WPA_DISCONNECTED); | |
1651 | wpa_supplicant_req_scan(wpa_s, 0, 0); | |
1652 | } | |
1653 | break; | |
1654 | case EVENT_INTERFACE_DISABLED: | |
1655 | wpa_printf(MSG_DEBUG, "Interface was disabled"); | |
1656 | wpa_supplicant_mark_disassoc(wpa_s); | |
1657 | wpa_supplicant_set_state(wpa_s, WPA_INTERFACE_DISABLED); | |
1658 | break; | |
6fc6879b JM |
1659 | default: |
1660 | wpa_printf(MSG_INFO, "Unknown event %d", event); | |
1661 | break; | |
1662 | } | |
1663 | } |