2 * Received Management frame processing
3 * Copyright (c) 2010, Jouni Malinen <j@w1.fi>
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.
9 * Alternatively, this software may be distributed under the terms of BSD
12 * See README and COPYING for more details.
15 #include "utils/includes.h"
17 #include "utils/common.h"
18 #include "common/ieee802_11_defs.h"
19 #include "common/ieee802_11_common.h"
20 #include "crypto/aes_wrap.h"
24 static const char * mgmt_stype(u16 stype)
27 case WLAN_FC_STYPE_ASSOC_REQ:
29 case WLAN_FC_STYPE_ASSOC_RESP:
31 case WLAN_FC_STYPE_REASSOC_REQ:
33 case WLAN_FC_STYPE_REASSOC_RESP:
34 return "REASSOC-RESP";
35 case WLAN_FC_STYPE_PROBE_REQ:
37 case WLAN_FC_STYPE_PROBE_RESP:
39 case WLAN_FC_STYPE_BEACON:
41 case WLAN_FC_STYPE_ATIM:
43 case WLAN_FC_STYPE_DISASSOC:
45 case WLAN_FC_STYPE_AUTH:
47 case WLAN_FC_STYPE_DEAUTH:
49 case WLAN_FC_STYPE_ACTION:
56 static void rx_mgmt_beacon(struct wlantest *wt, const u8 *data, size_t len)
58 const struct ieee80211_mgmt *mgmt;
59 struct wlantest_bss *bss;
60 struct ieee802_11_elems elems;
62 mgmt = (const struct ieee80211_mgmt *) data;
63 bss = bss_get(wt, mgmt->bssid);
66 if (bss->proberesp_seen)
67 return; /* do not override with Beacon data */
68 bss->capab_info = le_to_host16(mgmt->u.beacon.capab_info);
69 if (ieee802_11_parse_elems(mgmt->u.beacon.variable,
70 len - (mgmt->u.beacon.variable - data),
71 &elems, 0) == ParseFailed) {
72 if (bss->parse_error_reported)
74 wpa_printf(MSG_INFO, "Invalid IEs in a Beacon frame from "
75 MACSTR, MAC2STR(mgmt->sa));
76 bss->parse_error_reported = 1;
80 bss_update(wt, bss, &elems);
84 static void rx_mgmt_probe_resp(struct wlantest *wt, const u8 *data, size_t len)
86 const struct ieee80211_mgmt *mgmt;
87 struct wlantest_bss *bss;
88 struct ieee802_11_elems elems;
90 mgmt = (const struct ieee80211_mgmt *) data;
91 bss = bss_get(wt, mgmt->bssid);
95 bss->capab_info = le_to_host16(mgmt->u.probe_resp.capab_info);
96 if (ieee802_11_parse_elems(mgmt->u.probe_resp.variable,
97 len - (mgmt->u.probe_resp.variable - data),
98 &elems, 0) == ParseFailed) {
99 if (bss->parse_error_reported)
101 wpa_printf(MSG_INFO, "Invalid IEs in a Probe Response frame "
102 "from " MACSTR, MAC2STR(mgmt->sa));
103 bss->parse_error_reported = 1;
107 bss_update(wt, bss, &elems);
111 static void rx_mgmt_auth(struct wlantest *wt, const u8 *data, size_t len)
113 const struct ieee80211_mgmt *mgmt;
114 struct wlantest_bss *bss;
115 struct wlantest_sta *sta;
116 u16 alg, trans, status;
118 mgmt = (const struct ieee80211_mgmt *) data;
119 bss = bss_get(wt, mgmt->bssid);
122 if (os_memcmp(mgmt->sa, mgmt->bssid, ETH_ALEN) == 0)
123 sta = sta_get(bss, mgmt->da);
125 sta = sta_get(bss, mgmt->sa);
130 wpa_printf(MSG_INFO, "Too short Authentication frame from "
131 MACSTR, MAC2STR(mgmt->sa));
135 alg = le_to_host16(mgmt->u.auth.auth_alg);
136 trans = le_to_host16(mgmt->u.auth.auth_transaction);
137 status = le_to_host16(mgmt->u.auth.status_code);
139 wpa_printf(MSG_DEBUG, "AUTH " MACSTR " -> " MACSTR
140 " (alg=%u trans=%u status=%u)",
141 MAC2STR(mgmt->sa), MAC2STR(mgmt->da), alg, trans, status);
143 if (alg == 0 && trans == 2 && status == 0) {
144 if (sta->state == STATE1) {
145 wpa_printf(MSG_DEBUG, "STA " MACSTR
146 " moved to State 2 with " MACSTR,
147 MAC2STR(sta->addr), MAC2STR(bss->bssid));
152 if (os_memcmp(mgmt->sa, mgmt->bssid, ETH_ALEN) == 0)
153 sta->counters[WLANTEST_STA_COUNTER_AUTH_RX]++;
155 sta->counters[WLANTEST_STA_COUNTER_AUTH_TX]++;
159 static void rx_mgmt_deauth(struct wlantest *wt, const u8 *data, size_t len,
162 const struct ieee80211_mgmt *mgmt;
163 struct wlantest_bss *bss;
164 struct wlantest_sta *sta;
166 mgmt = (const struct ieee80211_mgmt *) data;
167 bss = bss_get(wt, mgmt->bssid);
170 if (os_memcmp(mgmt->sa, mgmt->bssid, ETH_ALEN) == 0)
171 sta = sta_get(bss, mgmt->da);
173 sta = sta_get(bss, mgmt->sa);
178 wpa_printf(MSG_INFO, "Too short Deauthentication frame from "
179 MACSTR, MAC2STR(mgmt->sa));
183 wpa_printf(MSG_DEBUG, "DEAUTH " MACSTR " -> " MACSTR
185 MAC2STR(mgmt->sa), MAC2STR(mgmt->da),
186 le_to_host16(mgmt->u.deauth.reason_code));
187 wpa_hexdump(MSG_MSGDUMP, "DEAUTH payload", data + 24, len - 24);
189 if (os_memcmp(mgmt->sa, mgmt->bssid, ETH_ALEN) == 0)
190 sta->counters[valid ? WLANTEST_STA_COUNTER_VALID_DEAUTH_RX :
191 WLANTEST_STA_COUNTER_INVALID_DEAUTH_RX]++;
193 sta->counters[valid ? WLANTEST_STA_COUNTER_VALID_DEAUTH_TX :
194 WLANTEST_STA_COUNTER_INVALID_DEAUTH_TX]++;
197 wpa_printf(MSG_INFO, "Do not change STA " MACSTR " State "
198 "since Disassociation frame was not protected "
199 "correctly", MAC2STR(sta->addr));
203 if (sta->state != STATE1) {
204 wpa_printf(MSG_DEBUG, "STA " MACSTR
205 " moved to State 1 with " MACSTR,
206 MAC2STR(sta->addr), MAC2STR(bss->bssid));
212 static void rx_mgmt_assoc_req(struct wlantest *wt, const u8 *data, size_t len)
214 const struct ieee80211_mgmt *mgmt;
215 struct wlantest_bss *bss;
216 struct wlantest_sta *sta;
217 struct ieee802_11_elems elems;
219 mgmt = (const struct ieee80211_mgmt *) data;
220 bss = bss_get(wt, mgmt->bssid);
223 sta = sta_get(bss, mgmt->sa);
228 wpa_printf(MSG_INFO, "Too short Association Request frame "
229 "from " MACSTR, MAC2STR(mgmt->sa));
233 wpa_printf(MSG_DEBUG, "ASSOCREQ " MACSTR " -> " MACSTR
234 " (capab=0x%x listen_int=%u)",
235 MAC2STR(mgmt->sa), MAC2STR(mgmt->da),
236 le_to_host16(mgmt->u.assoc_req.capab_info),
237 le_to_host16(mgmt->u.assoc_req.listen_interval));
239 sta->counters[WLANTEST_STA_COUNTER_ASSOCREQ_TX]++;
241 if (ieee802_11_parse_elems(mgmt->u.assoc_req.variable,
242 len - (mgmt->u.assoc_req.variable - data),
243 &elems, 0) == ParseFailed) {
244 wpa_printf(MSG_INFO, "Invalid IEs in Association Request "
245 "frame from " MACSTR, MAC2STR(mgmt->sa));
249 sta->assocreq_capab_info = le_to_host16(mgmt->u.assoc_req.capab_info);
250 sta->assocreq_listen_int =
251 le_to_host16(mgmt->u.assoc_req.listen_interval);
252 os_free(sta->assocreq_ies);
253 sta->assocreq_ies_len = len - (mgmt->u.assoc_req.variable - data);
254 sta->assocreq_ies = os_malloc(sta->assocreq_ies_len);
255 if (sta->assocreq_ies)
256 os_memcpy(sta->assocreq_ies, mgmt->u.assoc_req.variable,
257 sta->assocreq_ies_len);
259 sta_update_assoc(sta, &elems);
263 static void rx_mgmt_assoc_resp(struct wlantest *wt, const u8 *data, size_t len)
265 const struct ieee80211_mgmt *mgmt;
266 struct wlantest_bss *bss;
267 struct wlantest_sta *sta;
268 u16 capab, status, aid;
270 mgmt = (const struct ieee80211_mgmt *) data;
271 bss = bss_get(wt, mgmt->bssid);
274 sta = sta_get(bss, mgmt->da);
279 wpa_printf(MSG_INFO, "Too short Association Response frame "
280 "from " MACSTR, MAC2STR(mgmt->sa));
284 capab = le_to_host16(mgmt->u.assoc_resp.capab_info);
285 status = le_to_host16(mgmt->u.assoc_resp.status_code);
286 aid = le_to_host16(mgmt->u.assoc_resp.aid);
288 wpa_printf(MSG_DEBUG, "ASSOCRESP " MACSTR " -> " MACSTR
289 " (capab=0x%x status=%u aid=%u)",
290 MAC2STR(mgmt->sa), MAC2STR(mgmt->da), capab, status,
296 if ((aid & 0xc000) != 0xc000) {
297 wpa_printf(MSG_DEBUG, "Two MSBs of the AID were not set to 1 "
298 "in Association Response from " MACSTR,
301 sta->aid = aid & 0xc000;
303 if (sta->state < STATE2) {
304 wpa_printf(MSG_DEBUG, "STA " MACSTR " was not in State 2 when "
305 "getting associated", MAC2STR(sta->addr));
308 if (sta->state < STATE3) {
309 wpa_printf(MSG_DEBUG, "STA " MACSTR
310 " moved to State 3 with " MACSTR,
311 MAC2STR(sta->addr), MAC2STR(bss->bssid));
317 static void rx_mgmt_reassoc_req(struct wlantest *wt, const u8 *data,
320 const struct ieee80211_mgmt *mgmt;
321 struct wlantest_bss *bss;
322 struct wlantest_sta *sta;
323 struct ieee802_11_elems elems;
325 mgmt = (const struct ieee80211_mgmt *) data;
326 bss = bss_get(wt, mgmt->bssid);
329 sta = sta_get(bss, mgmt->sa);
333 if (len < 24 + 4 + ETH_ALEN) {
334 wpa_printf(MSG_INFO, "Too short Reassociation Request frame "
335 "from " MACSTR, MAC2STR(mgmt->sa));
339 wpa_printf(MSG_DEBUG, "REASSOCREQ " MACSTR " -> " MACSTR
340 " (capab=0x%x listen_int=%u current_ap=" MACSTR ")",
341 MAC2STR(mgmt->sa), MAC2STR(mgmt->da),
342 le_to_host16(mgmt->u.reassoc_req.capab_info),
343 le_to_host16(mgmt->u.reassoc_req.listen_interval),
344 MAC2STR(mgmt->u.reassoc_req.current_ap));
346 sta->counters[WLANTEST_STA_COUNTER_REASSOCREQ_TX]++;
348 if (ieee802_11_parse_elems(mgmt->u.reassoc_req.variable,
349 len - (mgmt->u.reassoc_req.variable - data),
350 &elems, 0) == ParseFailed) {
351 wpa_printf(MSG_INFO, "Invalid IEs in Reassociation Request "
352 "frame from " MACSTR, MAC2STR(mgmt->sa));
356 sta->assocreq_capab_info =
357 le_to_host16(mgmt->u.reassoc_req.capab_info);
358 sta->assocreq_listen_int =
359 le_to_host16(mgmt->u.reassoc_req.listen_interval);
360 os_free(sta->assocreq_ies);
361 sta->assocreq_ies_len = len - (mgmt->u.reassoc_req.variable - data);
362 sta->assocreq_ies = os_malloc(sta->assocreq_ies_len);
363 if (sta->assocreq_ies)
364 os_memcpy(sta->assocreq_ies, mgmt->u.reassoc_req.variable,
365 sta->assocreq_ies_len);
367 sta_update_assoc(sta, &elems);
371 static void rx_mgmt_reassoc_resp(struct wlantest *wt, const u8 *data,
374 const struct ieee80211_mgmt *mgmt;
375 struct wlantest_bss *bss;
376 struct wlantest_sta *sta;
377 u16 capab, status, aid;
379 mgmt = (const struct ieee80211_mgmt *) data;
380 bss = bss_get(wt, mgmt->bssid);
383 sta = sta_get(bss, mgmt->da);
388 wpa_printf(MSG_INFO, "Too short Reassociation Response frame "
389 "from " MACSTR, MAC2STR(mgmt->sa));
393 capab = le_to_host16(mgmt->u.reassoc_resp.capab_info);
394 status = le_to_host16(mgmt->u.reassoc_resp.status_code);
395 aid = le_to_host16(mgmt->u.reassoc_resp.aid);
397 wpa_printf(MSG_DEBUG, "REASSOCRESP " MACSTR " -> " MACSTR
398 " (capab=0x%x status=%u aid=%u)",
399 MAC2STR(mgmt->sa), MAC2STR(mgmt->da), capab, status,
405 if ((aid & 0xc000) != 0xc000) {
406 wpa_printf(MSG_DEBUG, "Two MSBs of the AID were not set to 1 "
407 "in Reassociation Response from " MACSTR,
410 sta->aid = aid & 0xc000;
412 if (sta->state < STATE2) {
413 wpa_printf(MSG_DEBUG, "STA " MACSTR " was not in State 2 when "
414 "getting associated", MAC2STR(sta->addr));
417 if (sta->state < STATE3) {
418 wpa_printf(MSG_DEBUG, "STA " MACSTR
419 " moved to State 3 with " MACSTR,
420 MAC2STR(sta->addr), MAC2STR(bss->bssid));
426 static void rx_mgmt_disassoc(struct wlantest *wt, const u8 *data, size_t len,
429 const struct ieee80211_mgmt *mgmt;
430 struct wlantest_bss *bss;
431 struct wlantest_sta *sta;
433 mgmt = (const struct ieee80211_mgmt *) data;
434 bss = bss_get(wt, mgmt->bssid);
437 if (os_memcmp(mgmt->sa, mgmt->bssid, ETH_ALEN) == 0)
438 sta = sta_get(bss, mgmt->da);
440 sta = sta_get(bss, mgmt->sa);
445 wpa_printf(MSG_INFO, "Too short Disassociation frame from "
446 MACSTR, MAC2STR(mgmt->sa));
450 wpa_printf(MSG_DEBUG, "DISASSOC " MACSTR " -> " MACSTR
452 MAC2STR(mgmt->sa), MAC2STR(mgmt->da),
453 le_to_host16(mgmt->u.disassoc.reason_code));
454 wpa_hexdump(MSG_MSGDUMP, "DISASSOC payload", data + 24, len - 24);
456 if (os_memcmp(mgmt->sa, mgmt->bssid, ETH_ALEN) == 0)
457 sta->counters[valid ? WLANTEST_STA_COUNTER_VALID_DISASSOC_RX :
458 WLANTEST_STA_COUNTER_INVALID_DISASSOC_RX]++;
460 sta->counters[valid ? WLANTEST_STA_COUNTER_VALID_DISASSOC_TX :
461 WLANTEST_STA_COUNTER_INVALID_DISASSOC_TX]++;
464 wpa_printf(MSG_INFO, "Do not change STA " MACSTR " State "
465 "since Disassociation frame was not protected "
466 "correctly", MAC2STR(sta->addr));
470 if (sta->state < STATE2) {
471 wpa_printf(MSG_DEBUG, "STA " MACSTR " was not in State 2 or 3 "
472 "when getting disassociated", MAC2STR(sta->addr));
475 if (sta->state > STATE2) {
476 wpa_printf(MSG_DEBUG, "STA " MACSTR
477 " moved to State 2 with " MACSTR,
478 MAC2STR(sta->addr), MAC2STR(bss->bssid));
484 static void rx_mgmt_action_sa_query_req(struct wlantest *wt,
485 struct wlantest_sta *sta,
486 const struct ieee80211_mgmt *mgmt,
487 size_t len, int valid)
492 rx_id = (const u8 *) mgmt->u.action.u.sa_query_req.trans_id;
493 if (os_memcmp(mgmt->sa, mgmt->bssid, ETH_ALEN) == 0)
494 id = sta->ap_sa_query_tr;
496 id = sta->sta_sa_query_tr;
497 wpa_printf(MSG_INFO, "SA Query Request " MACSTR " -> " MACSTR
498 " (trans_id=%02x%02x)%s",
499 MAC2STR(mgmt->sa), MAC2STR(mgmt->da), rx_id[0], rx_id[1],
500 valid ? "" : " (invalid protection)");
501 os_memcpy(id, mgmt->u.action.u.sa_query_req.trans_id, 2);
502 if (os_memcmp(mgmt->sa, sta->addr, ETH_ALEN) == 0)
503 sta->counters[valid ?
504 WLANTEST_STA_COUNTER_VALID_SAQUERYREQ_TX :
505 WLANTEST_STA_COUNTER_INVALID_SAQUERYREQ_TX]++;
507 sta->counters[valid ?
508 WLANTEST_STA_COUNTER_VALID_SAQUERYREQ_RX :
509 WLANTEST_STA_COUNTER_INVALID_SAQUERYREQ_RX]++;
513 static void rx_mgmt_action_sa_query_resp(struct wlantest *wt,
514 struct wlantest_sta *sta,
515 const struct ieee80211_mgmt *mgmt,
516 size_t len, int valid)
522 rx_id = (const u8 *) mgmt->u.action.u.sa_query_resp.trans_id;
523 if (os_memcmp(mgmt->sa, mgmt->bssid, ETH_ALEN) == 0)
524 id = sta->sta_sa_query_tr;
526 id = sta->ap_sa_query_tr;
527 match = os_memcmp(rx_id, id, 2) == 0;
528 wpa_printf(MSG_INFO, "SA Query Response " MACSTR " -> " MACSTR
529 " (trans_id=%02x%02x; %s)%s",
530 MAC2STR(mgmt->sa), MAC2STR(mgmt->da), rx_id[0], rx_id[1],
531 match ? "match" : "mismatch",
532 valid ? "" : " (invalid protection)");
533 if (os_memcmp(mgmt->sa, sta->addr, ETH_ALEN) == 0)
534 sta->counters[(valid && match) ?
535 WLANTEST_STA_COUNTER_VALID_SAQUERYRESP_TX :
536 WLANTEST_STA_COUNTER_INVALID_SAQUERYRESP_TX]++;
538 sta->counters[(valid && match) ?
539 WLANTEST_STA_COUNTER_VALID_SAQUERYRESP_RX :
540 WLANTEST_STA_COUNTER_INVALID_SAQUERYRESP_RX]++;
544 static void rx_mgmt_action_sa_query(struct wlantest *wt,
545 struct wlantest_sta *sta,
546 const struct ieee80211_mgmt *mgmt,
547 size_t len, int valid)
549 if (len < 24 + 2 + WLAN_SA_QUERY_TR_ID_LEN) {
550 wpa_printf(MSG_INFO, "Too short SA Query frame from " MACSTR,
555 if (len > 24 + 2 + WLAN_SA_QUERY_TR_ID_LEN) {
556 size_t elen = len - (24 + 2 + WLAN_SA_QUERY_TR_ID_LEN);
557 wpa_printf(MSG_INFO, "Unexpected %u octets of extra data at "
558 "the end of SA Query frame from " MACSTR,
559 (unsigned) elen, MAC2STR(mgmt->sa));
560 wpa_hexdump(MSG_INFO, "SA Query extra data",
561 ((const u8 *) mgmt) + len - elen, elen);
564 switch (mgmt->u.action.u.sa_query_req.action) {
565 case WLAN_SA_QUERY_REQUEST:
566 rx_mgmt_action_sa_query_req(wt, sta, mgmt, len, valid);
568 case WLAN_SA_QUERY_RESPONSE:
569 rx_mgmt_action_sa_query_resp(wt, sta, mgmt, len, valid);
572 wpa_printf(MSG_INFO, "Unexpected SA Query action value %u "
574 mgmt->u.action.u.sa_query_req.action,
580 static void rx_mgmt_action(struct wlantest *wt, const u8 *data, size_t len,
583 const struct ieee80211_mgmt *mgmt;
584 struct wlantest_bss *bss;
585 struct wlantest_sta *sta;
587 mgmt = (const struct ieee80211_mgmt *) data;
588 if (mgmt->da[0] & 0x01) {
589 wpa_printf(MSG_DEBUG, "Group addressed Action frame: DA="
590 MACSTR " SA=" MACSTR " BSSID=" MACSTR
592 MAC2STR(mgmt->da), MAC2STR(mgmt->sa),
593 MAC2STR(mgmt->bssid), mgmt->u.action.category);
594 return; /* Ignore group addressed Action frames for now */
596 bss = bss_get(wt, mgmt->bssid);
599 if (os_memcmp(mgmt->sa, mgmt->bssid, ETH_ALEN) == 0)
600 sta = sta_get(bss, mgmt->da);
602 sta = sta_get(bss, mgmt->sa);
607 wpa_printf(MSG_INFO, "Too short Action frame from "
608 MACSTR, MAC2STR(mgmt->sa));
612 wpa_printf(MSG_DEBUG, "ACTION " MACSTR " -> " MACSTR
613 " (category=%u) (valid=%d)",
614 MAC2STR(mgmt->sa), MAC2STR(mgmt->da),
615 mgmt->u.action.category, valid);
616 wpa_hexdump(MSG_MSGDUMP, "ACTION payload", data + 24, len - 24);
618 if (mgmt->u.action.category != WLAN_ACTION_PUBLIC &&
619 sta->state < STATE3) {
620 wpa_printf(MSG_INFO, "Action frame sent when STA is not in "
621 "State 3 (SA=" MACSTR " DATA=" MACSTR ")",
622 MAC2STR(mgmt->sa), MAC2STR(mgmt->da));
625 switch (mgmt->u.action.category) {
626 case WLAN_ACTION_SA_QUERY:
627 rx_mgmt_action_sa_query(wt, sta, mgmt, len, valid);
633 static int check_mmie_mic(const u8 *igtk, const u8 *data, size_t len)
638 const struct ieee80211_hdr *hdr;
640 buf = os_malloc(len + 20 - 24);
644 /* BIP AAD: FC(masked) A1 A2 A3 */
645 hdr = (const struct ieee80211_hdr *) data;
646 fc = le_to_host16(hdr->frame_control);
647 fc &= ~(WLAN_FC_RETRY | WLAN_FC_PWRMGT | WLAN_FC_MOREDATA);
648 WPA_PUT_LE16(buf, fc);
649 os_memcpy(buf + 2, hdr->addr1, 3 * ETH_ALEN);
651 /* Frame body with MMIE MIC masked to zero */
652 os_memcpy(buf + 20, data + 24, len - 24 - 8);
653 os_memset(buf + 20 + len - 24 - 8, 0, 8);
655 wpa_hexdump(MSG_MSGDUMP, "BIP: AAD|Body(masked)", buf, len + 20 - 24);
656 /* MIC = L(AES-128-CMAC(AAD || Frame Body(masked)), 0, 64) */
657 if (omac1_aes_128(igtk, buf, len + 20 - 24, mic) < 0) {
664 if (os_memcmp(data + len - 8, mic, 8) != 0)
671 static int check_bip(struct wlantest *wt, const u8 *data, size_t len)
673 const struct ieee80211_mgmt *mgmt;
677 struct wlantest_bss *bss;
679 mgmt = (const struct ieee80211_mgmt *) data;
680 fc = le_to_host16(mgmt->frame_control);
681 stype = WLAN_FC_GET_STYPE(fc);
683 if (stype == WLAN_FC_STYPE_ACTION) {
686 if (mgmt->u.action.category == WLAN_ACTION_PUBLIC)
687 return 0; /* Not a robust management frame */
690 bss = bss_get(wt, mgmt->bssid);
692 return 0; /* No key known yet */
694 if (len < 24 + 18 || data[len - 18] != WLAN_EID_MMIE ||
695 data[len - 17] != 16) {
697 if (bss->rsn_capab & WPA_CAPABILITY_MFPC) {
698 wpa_printf(MSG_INFO, "Robust group-addressed "
699 "management frame sent without BIP by "
700 MACSTR, MAC2STR(mgmt->sa));
701 bss->counters[WLANTEST_BSS_COUNTER_MISSING_BIP_MMIE]++;
707 mmie = data + len - 16;
708 keyid = WPA_GET_LE16(mmie);
709 if (keyid & 0xf000) {
710 wpa_printf(MSG_INFO, "MMIE KeyID reserved bits not zero "
711 "(%04x) from " MACSTR, keyid, MAC2STR(mgmt->sa));
714 if (keyid < 4 || keyid > 5) {
715 wpa_printf(MSG_INFO, "Unexpected MMIE KeyID %u from " MACSTR,
716 keyid, MAC2STR(mgmt->sa));
717 bss->counters[WLANTEST_BSS_COUNTER_INVALID_BIP_MMIE]++;
720 wpa_printf(MSG_DEBUG, "MMIE KeyID %u", keyid);
721 wpa_hexdump(MSG_MSGDUMP, "MMIE IPN", mmie + 2, 6);
722 wpa_hexdump(MSG_MSGDUMP, "MMIE MIC", mmie + 8, 8);
724 if (!bss->igtk_set[keyid]) {
725 wpa_printf(MSG_DEBUG, "No IGTK known to validate BIP frame");
729 if (os_memcmp(mmie + 2, bss->ipn[keyid], 6) <= 0) {
730 wpa_printf(MSG_INFO, "BIP replay detected: SA=" MACSTR,
732 wpa_hexdump(MSG_INFO, "RX IPN", mmie + 2, 6);
733 wpa_hexdump(MSG_INFO, "Last RX IPN", bss->ipn[keyid], 6);
736 if (check_mmie_mic(bss->igtk[keyid], data, len) < 0) {
737 wpa_printf(MSG_INFO, "Invalid MMIE MIC in a frame from "
738 MACSTR, MAC2STR(mgmt->sa));
739 bss->counters[WLANTEST_BSS_COUNTER_INVALID_BIP_MMIE]++;
743 wpa_printf(MSG_DEBUG, "Valid MMIE MIC");
744 os_memcpy(bss->ipn[keyid], mmie + 2, 6);
745 bss->counters[WLANTEST_BSS_COUNTER_VALID_BIP_MMIE]++;
751 static u8 * mgmt_ccmp_decrypt(struct wlantest *wt, const u8 *data, size_t len,
754 struct wlantest_bss *bss;
755 struct wlantest_sta *sta;
756 const struct ieee80211_hdr *hdr;
758 u8 *decrypted, *frame = NULL;
761 hdr = (const struct ieee80211_hdr *) data;
762 bss = bss_get(wt, hdr->addr3);
765 if (os_memcmp(hdr->addr1, hdr->addr3, ETH_ALEN) == 0)
766 sta = sta_get(bss, hdr->addr2);
768 sta = sta_get(bss, hdr->addr1);
769 if (sta == NULL || !sta->ptk_set) {
770 wpa_printf(MSG_MSGDUMP, "No PTK known to decrypt the frame");
777 if (!(data[24 + 3] & 0x20)) {
778 wpa_printf(MSG_INFO, "Expected CCMP frame from " MACSTR
779 " did not have ExtIV bit set to 1",
780 MAC2STR(hdr->addr2));
784 if (data[24 + 2] != 0 || (data[24 + 3] & 0x1f) != 0) {
785 wpa_printf(MSG_INFO, "CCMP mgmt frame from " MACSTR " used "
786 "non-zero reserved bit", MAC2STR(hdr->addr2));
789 keyid = data[24 + 3] >> 6;
791 wpa_printf(MSG_INFO, "Unexpected non-zero KeyID %d in "
792 "individually addressed Management frame from "
793 MACSTR, keyid, MAC2STR(hdr->addr2));
796 if (os_memcmp(hdr->addr1, hdr->addr3, ETH_ALEN) == 0)
797 rsc = sta->rsc_tods[16];
799 rsc = sta->rsc_fromds[16];
801 ccmp_get_pn(pn, data + 24);
802 if (os_memcmp(pn, rsc, 6) <= 0) {
803 wpa_printf(MSG_INFO, "CCMP/TKIP replay detected: SA=" MACSTR,
804 MAC2STR(hdr->addr2));
805 wpa_hexdump(MSG_INFO, "RX PN", pn, 6);
806 wpa_hexdump(MSG_INFO, "RSC", rsc, 6);
809 decrypted = ccmp_decrypt(sta->ptk.tk1, hdr, data + 24, len - 24, dlen);
811 os_memcpy(rsc, pn, 6);
812 frame = os_malloc(24 + *dlen);
814 os_memcpy(frame, data, 24);
815 os_memcpy(frame + 24, decrypted, *dlen);
826 static int check_mgmt_ccmp(struct wlantest *wt, const u8 *data, size_t len)
828 const struct ieee80211_mgmt *mgmt;
830 struct wlantest_bss *bss;
831 struct wlantest_sta *sta;
833 mgmt = (const struct ieee80211_mgmt *) data;
834 fc = le_to_host16(mgmt->frame_control);
836 if (WLAN_FC_GET_STYPE(fc) == WLAN_FC_STYPE_ACTION) {
838 mgmt->u.action.category == WLAN_ACTION_PUBLIC)
839 return 0; /* Not a robust management frame */
842 bss = bss_get(wt, mgmt->bssid);
845 if (os_memcmp(mgmt->da, mgmt->bssid, ETH_ALEN) == 0)
846 sta = sta_get(bss, mgmt->sa);
848 sta = sta_get(bss, mgmt->da);
852 if (sta->rsn_capab & WPA_CAPABILITY_MFPC) {
853 wpa_printf(MSG_INFO, "Robust individually-addressed "
854 "management frame sent without CCMP by "
855 MACSTR, MAC2STR(mgmt->sa));
863 void rx_mgmt(struct wlantest *wt, const u8 *data, size_t len)
865 const struct ieee80211_hdr *hdr;
868 u8 *decrypted = NULL;
874 hdr = (const struct ieee80211_hdr *) data;
875 fc = le_to_host16(hdr->frame_control);
877 stype = WLAN_FC_GET_STYPE(fc);
879 if ((hdr->addr1[0] & 0x01) &&
880 (stype == WLAN_FC_STYPE_DEAUTH ||
881 stype == WLAN_FC_STYPE_DISASSOC ||
882 stype == WLAN_FC_STYPE_ACTION)) {
883 if (check_bip(wt, data, len) < 0)
887 wpa_printf((stype == WLAN_FC_STYPE_BEACON ||
888 stype == WLAN_FC_STYPE_PROBE_RESP ||
889 stype == WLAN_FC_STYPE_PROBE_REQ) ?
890 MSG_EXCESSIVE : MSG_MSGDUMP,
891 "MGMT %s%s%s DA=" MACSTR " SA=" MACSTR " BSSID=" MACSTR,
893 fc & WLAN_FC_PWRMGT ? " PwrMgt" : "",
894 fc & WLAN_FC_ISWEP ? " Prot" : "",
895 MAC2STR(hdr->addr1), MAC2STR(hdr->addr2),
896 MAC2STR(hdr->addr3));
898 if ((fc & WLAN_FC_ISWEP) &&
899 !(hdr->addr1[0] & 0x01) &&
900 (stype == WLAN_FC_STYPE_DEAUTH ||
901 stype == WLAN_FC_STYPE_DISASSOC ||
902 stype == WLAN_FC_STYPE_ACTION)) {
903 decrypted = mgmt_ccmp_decrypt(wt, data, len, &dlen);
905 write_pcap_decrypted(wt, decrypted, dlen, NULL, 0);
912 if (!(fc & WLAN_FC_ISWEP) &&
913 !(hdr->addr1[0] & 0x01) &&
914 (stype == WLAN_FC_STYPE_DEAUTH ||
915 stype == WLAN_FC_STYPE_DISASSOC ||
916 stype == WLAN_FC_STYPE_ACTION)) {
917 if (check_mgmt_ccmp(wt, data, len) < 0)
922 case WLAN_FC_STYPE_BEACON:
923 rx_mgmt_beacon(wt, data, len);
925 case WLAN_FC_STYPE_PROBE_RESP:
926 rx_mgmt_probe_resp(wt, data, len);
928 case WLAN_FC_STYPE_AUTH:
929 rx_mgmt_auth(wt, data, len);
931 case WLAN_FC_STYPE_DEAUTH:
932 rx_mgmt_deauth(wt, data, len, valid);
934 case WLAN_FC_STYPE_ASSOC_REQ:
935 rx_mgmt_assoc_req(wt, data, len);
937 case WLAN_FC_STYPE_ASSOC_RESP:
938 rx_mgmt_assoc_resp(wt, data, len);
940 case WLAN_FC_STYPE_REASSOC_REQ:
941 rx_mgmt_reassoc_req(wt, data, len);
943 case WLAN_FC_STYPE_REASSOC_RESP:
944 rx_mgmt_reassoc_resp(wt, data, len);
946 case WLAN_FC_STYPE_DISASSOC:
947 rx_mgmt_disassoc(wt, data, len, valid);
949 case WLAN_FC_STYPE_ACTION:
950 rx_mgmt_action(wt, data, len, valid);