Gitiles
Code Review Sign In
192.168.1.100 / T108 / e958203796650e3959a43708d67534bf36f4c83b / . / package / kernel / asr-wl / asr-hostapd / asr-hostapd-2023-06-22 / wlantest / rx_mgmt.c
blob: 62adaa848b090f591c8815457db3a7066e5e7df8 [file] [log] [blame]
/*
* Received Management frame processing
* Copyright (c) 2010-2020, Jouni Malinen <j@w1.fi>
*
* This software may be distributed under the terms of the BSD license.
* See README for more details.
*/
#include "utils/includes.h"
#include "utils/common.h"
#include "common/defs.h"
#include "common/ieee802_11_defs.h"
#include "common/ieee802_11_common.h"
#include "common/wpa_common.h"
#include "crypto/aes.h"
#include "crypto/aes_siv.h"
#include "crypto/aes_wrap.h"
#include "wlantest.h"
static int check_mmie_mic(unsigned int mgmt_group_cipher,
const u8 *igtk, size_t igtk_len,
const u8 *data, size_t len);
static const char * mgmt_stype(u16 stype)
{
switch (stype) {
case WLAN_FC_STYPE_ASSOC_REQ:
return "ASSOC-REQ";
case WLAN_FC_STYPE_ASSOC_RESP:
return "ASSOC-RESP";
case WLAN_FC_STYPE_REASSOC_REQ:
return "REASSOC-REQ";
case WLAN_FC_STYPE_REASSOC_RESP:
return "REASSOC-RESP";
case WLAN_FC_STYPE_PROBE_REQ:
return "PROBE-REQ";
case WLAN_FC_STYPE_PROBE_RESP:
return "PROBE-RESP";
case WLAN_FC_STYPE_BEACON:
return "BEACON";
case WLAN_FC_STYPE_ATIM:
return "ATIM";
case WLAN_FC_STYPE_DISASSOC:
return "DISASSOC";
case WLAN_FC_STYPE_AUTH:
return "AUTH";
case WLAN_FC_STYPE_DEAUTH:
return "DEAUTH";
case WLAN_FC_STYPE_ACTION:
return "ACTION";
case WLAN_FC_STYPE_ACTION_NO_ACK:
return "ACTION-NO-ACK";
}
return "??";
}
static void parse_basic_ml(const u8 *ie, size_t len, bool ap)
{
const u8 *pos, *end, *ci_end, *info_end;
u16 ctrl, eml, cap;
const struct element *elem;
pos = ie;
end = ie + len;
if (end - pos < 2)
return;
ctrl = WPA_GET_LE16(pos);
wpa_printf(MSG_DEBUG,
"Multi-Link Control: Type=%u Reserved=%u Presence Bitmap=0x%x",
ctrl & MULTI_LINK_CONTROL_TYPE_MASK,
ctrl & BIT(3),
ctrl >> 4);
pos += 2;
/* Common Info */
if (end - pos < 1)
return;
len = *pos;
if (len > end - pos) {
wpa_printf(MSG_INFO,
"Truncated Multi-Link Common Info (len=%zu left=%zu)",
len, (size_t) (end - pos));
return;
}
if (len < 1 + ETH_ALEN) {
wpa_printf(MSG_INFO,
"No room for MLD MAC Address in Multi-Link Common Info");
return;
}
ci_end = pos + len;
pos += 1 + ETH_ALEN;
if (ctrl & BASIC_MULTI_LINK_CTRL_PRES_LINK_ID) {
if (ci_end - pos < 1) {
wpa_printf(MSG_INFO,
"No room for Link ID Info in Multi-Link Common Info");
return;
}
wpa_printf(MSG_DEBUG, "Link ID Info: 0x%x", *pos);
if (!ap)
wpa_printf(MSG_INFO,
"Unexpected Link ID Info in Common Info from a non-AP STA");
pos++;
}
if (ctrl & BASIC_MULTI_LINK_CTRL_PRES_BSS_PARAM_CH_COUNT) {
if (ci_end - pos < 1) {
wpa_printf(MSG_INFO,
"No room for BSS Parameters Change Count in Multi-Link Common Info");
return;
}
wpa_printf(MSG_DEBUG, "BSS Parameters Change Count: %u", *pos);
if (!ap)
wpa_printf(MSG_INFO,
"Unexpected BSS Parameters Change Count in Common Info from a non-AP STA");
pos++;
}
if (ctrl & BASIC_MULTI_LINK_CTRL_PRES_MSD_INFO) {
if (ci_end - pos < 2) {
wpa_printf(MSG_INFO,
"No room for Medium Synchronization Delay Information in Multi-Link Common Info");
return;
}
wpa_printf(MSG_DEBUG,
"Medium Synchronization Delay Information: 0x%x",
WPA_GET_LE16(pos));
if (!ap)
wpa_printf(MSG_INFO,
"Unexpected Medium Synchronization Delay Information in Common Info from a non-AP STA");
pos += 2;
}
if (ctrl & BASIC_MULTI_LINK_CTRL_PRES_EML_CAPA) {
if (ci_end - pos < 2) {
wpa_printf(MSG_INFO,
"No room for EML Capabilities in Multi-Link Common Info");
return;
}
eml = WPA_GET_LE16(pos);
pos += 2;
wpa_printf(MSG_DEBUG,
"EML Capabilities: 0x%x (EMLSR=%u EMLSR_Padding_Delay=%u EMLSR_Transition_Delay=%u EMLMR=%u EMLMR_Delay=%u Transition_Timeout=%u Reserved=%u)",
eml,
!!(eml & EHT_ML_EML_CAPA_EMLSR_SUPP),
(eml & EHT_ML_EML_CAPA_EMLSR_PADDING_DELAY_MASK) >>
1,
(eml & EHT_ML_EML_CAPA_EMLSR_TRANS_DELAY_MASK) >> 4,
!!(eml & EHT_ML_EML_CAPA_EMLMR_SUPP),
(eml & EHT_ML_EML_CAPA_EMLMR_DELAY_MASK) >> 8,
(eml & EHT_ML_EML_CAPA_TRANSITION_TIMEOUT_MASK) >>
11,
!!(eml & BIT(15)));
}
if (ctrl & BASIC_MULTI_LINK_CTRL_PRES_MLD_CAPA) {
if (ci_end - pos < 2) {
wpa_printf(MSG_INFO,
"No room for MLD Capabilities and Operations in Multi-Link Common Info");
return;
}
cap = WPA_GET_LE16(pos);
pos += 2;
wpa_printf(MSG_DEBUG,
"MLD Capabilities and Operations: 0x%x (Max_Simultaneous_Links=%u SRS=%u T2L=0x%x Freq_Sep_STR=0x%x AAR=%u Reserved=0x%x)",
cap,
cap & EHT_ML_MLD_CAPA_MAX_NUM_SIM_LINKS_MASK,
!!(cap & EHT_ML_MLD_CAPA_SRS_SUPP),
(cap &
EHT_ML_MLD_CAPA_TID_TO_LINK_MAP_NEG_SUPP_MSK) >> 5,
(cap & EHT_ML_MLD_CAPA_FREQ_SEP_FOR_STR_MASK) >> 7,
!!(cap & EHT_ML_MLD_CAPA_AAR_SUPP),
(cap & 0xe000) >> 13);
}
if (ctrl & BASIC_MULTI_LINK_CTRL_PRES_AP_MLD_ID) {
if (ci_end - pos < 1) {
wpa_printf(MSG_INFO,
"No room for AP MLD ID in Multi-Link Common Info");
return;
}
wpa_printf(MSG_DEBUG, "AP MLD ID: %u", *pos);
pos++;
}
if (pos < ci_end) {
wpa_hexdump(MSG_INFO,
"Extra information at the end of Common Info",
pos, ci_end - pos);
pos = ci_end;
}
/* Link Info */
for_each_element(elem, pos, end - pos) {
if (elem->id != EHT_ML_SUB_ELEM_PER_STA_PROFILE) {
wpa_printf(MSG_DEBUG, "Link Info subelement id=%u",
elem->id);
wpa_hexdump(MSG_DEBUG, "Link Info subelement data",
elem->data, elem->datalen);
continue;
}
pos = elem->data;
end = pos + elem->datalen;
if (end - pos < 2) {
wpa_printf(MSG_INFO,
"Truncated Per-STA Profile subelement");
continue;
}
ctrl = WPA_GET_LE16(pos);
pos += 2;
wpa_printf(MSG_DEBUG, "Per-STA Profile: len=%u Link_ID=%u Complete=%u Reserved=0x%x",
elem->datalen,
ctrl & BASIC_MLE_STA_CTRL_LINK_ID_MASK,
!!(ctrl & BASIC_MLE_STA_CTRL_COMPLETE_PROFILE),
(ctrl & 0xf000) >> 12);
if (end - pos < 1) {
wpa_printf(MSG_INFO, "No room for STA Info field");
continue;
}
len = *pos;
if (len < 1 || len > end - pos) {
wpa_printf(MSG_INFO, "Truncated STA Info field");
continue;
}
info_end = pos + len;
pos++;
if (ctrl & BASIC_MLE_STA_CTRL_PRES_STA_MAC) {
if (info_end - pos < ETH_ALEN) {
wpa_printf(MSG_INFO,
"Truncated STA MAC Address in STA Info");
continue;
}
wpa_printf(MSG_DEBUG, "STA MAC Address: " MACSTR,
MAC2STR(pos));
pos += ETH_ALEN;
}
if (ctrl & BASIC_MLE_STA_CTRL_PRES_BEACON_INT) {
if (info_end - pos < 2) {
wpa_printf(MSG_INFO,
"Truncated Beacon Interval in STA Info");
continue;
}
wpa_printf(MSG_DEBUG, "Beacon Interval: %u",
WPA_GET_LE16(pos));
pos += 2;
}
if (ctrl & BASIC_MLE_STA_CTRL_PRES_TSF_OFFSET) {
if (info_end - pos < 8) {
wpa_printf(MSG_INFO,
"Truncated TSF Offset in STA Info");
continue;
}
wpa_printf(MSG_DEBUG, "TSF Offset: 0x%llx",
(long long unsigned) WPA_GET_LE64(pos));
pos += 8;
}
if (ctrl & BASIC_MLE_STA_CTRL_PRES_DTIM_INFO) {
if (info_end - pos < 2) {
wpa_printf(MSG_INFO,
"Truncated DTIM Info in STA Info");
continue;
}
wpa_printf(MSG_DEBUG, "DTIM Info: 0x%x",
WPA_GET_LE16(pos));
pos += 2;
}
if ((ctrl & (BASIC_MLE_STA_CTRL_COMPLETE_PROFILE |
BASIC_MLE_STA_CTRL_PRES_NSTR_LINK_PAIR)) ==
(BASIC_MLE_STA_CTRL_COMPLETE_PROFILE |
BASIC_MLE_STA_CTRL_PRES_NSTR_LINK_PAIR)) {
if (ctrl & BASIC_MLE_STA_CTRL_NSTR_BITMAP) {
if (info_end - pos < 2) {
wpa_printf(MSG_INFO,
"Truncated NSTR Indication Bitmap in STA Info");
continue;
}
wpa_printf(MSG_DEBUG, "NSTR Indication Bitmap: 0x%04x",
WPA_GET_LE16(pos));
pos += 2;
} else {
if (info_end - pos < 1) {
wpa_printf(MSG_INFO,
"Truncated NSTR Indication Bitmap in STA Info");
continue;
}
wpa_printf(MSG_DEBUG, "NSTR Indication Bitmap: 0x%02x",
*pos);
pos++;
}
}
if (ctrl & BASIC_MLE_STA_CTRL_PRES_BSS_PARAM_COUNT) {
if (info_end - pos < 1) {
wpa_printf(MSG_INFO,
"Truncated BSS Parameters Change Count in STA Info");
continue;
}
wpa_printf(MSG_DEBUG, "BSS Parameters Change Count: %u",
*pos);
pos++;
}
if (info_end > pos) {
wpa_hexdump(MSG_INFO,
"Extra information at the end of STA Info",
pos, ci_end - pos);
pos = info_end;
}
wpa_hexdump(MSG_DEBUG, "STA Profile", pos, end - pos);
}
}
static void rx_mgmt_beacon(struct wlantest *wt, const u8 *data, size_t len)
{
const struct ieee80211_mgmt *mgmt;
struct wlantest_bss *bss;
struct ieee802_11_elems elems;
size_t offset;
const u8 *mme;
size_t mic_len;
u16 keyid;
mgmt = (const struct ieee80211_mgmt *) data;
offset = mgmt->u.beacon.variable - data;
if (len < offset)
return;
bss = bss_get(wt, mgmt->bssid);
if (bss == NULL)
return;
/* do not override with Beacon data */
if (!bss->proberesp_seen)
bss->capab_info = le_to_host16(mgmt->u.beacon.capab_info);
if (ieee802_11_parse_elems(mgmt->u.beacon.variable, len - offset,
&elems, 0) == ParseFailed) {
if (bss->parse_error_reported)
return;
add_note(wt, MSG_INFO, "Invalid IEs in a Beacon frame from "
MACSTR, MAC2STR(mgmt->sa));
bss->parse_error_reported = 1;
return;
}
if (elems.rsnxe) {
os_memcpy(bss->rsnxe, elems.rsnxe, elems.rsnxe_len);
bss->rsnxe_len = elems.rsnxe_len;
} else {
bss->rsnxe_len = 0;
}
if (!bss->proberesp_seen)
bss_update(wt, bss, &elems, 1);
mme = get_ie(mgmt->u.beacon.variable, len - offset, WLAN_EID_MMIE);
if (!mme) {
if (bss->bigtk_idx) {
add_note(wt, MSG_INFO,
"Unexpected unprotected Beacon frame from "
MACSTR, MAC2STR(mgmt->sa));
bss->counters[WLANTEST_BSS_COUNTER_MISSING_BIP_MMIE]++;
}
return;
}
mic_len = bss->mgmt_group_cipher == WPA_CIPHER_AES_128_CMAC ? 8 : 16;
if (len < 24 + 10 + mic_len ||
data[len - (10 + mic_len)] != WLAN_EID_MMIE ||
data[len - (10 + mic_len - 1)] != 8 + mic_len) {
add_note(wt, MSG_INFO, "Invalid MME in a Beacon frame from "
MACSTR, MAC2STR(mgmt->sa));
return;
}
mme += 2;
keyid = WPA_GET_LE16(mme);
if (keyid < 6 || keyid > 7) {
add_note(wt, MSG_INFO, "Unexpected MME KeyID %u from " MACSTR,
keyid, MAC2STR(mgmt->sa));
bss->counters[WLANTEST_BSS_COUNTER_INVALID_BIP_MMIE]++;
return;
}
wpa_printf(MSG_DEBUG, "Beacon frame MME KeyID %u", keyid);
wpa_hexdump(MSG_MSGDUMP, "MME IPN", mme + 2, 6);
wpa_hexdump(MSG_MSGDUMP, "MME MIC", mme + 8, mic_len);
if (!bss->igtk_len[keyid]) {
add_note(wt, MSG_DEBUG,
"No BIGTK known to validate BIP frame from " MACSTR,
MAC2STR(mgmt->sa));
return;
}
if (os_memcmp(mme + 2, bss->ipn[keyid], 6) <= 0) {
add_note(wt, MSG_INFO, "BIP replay detected: SA=" MACSTR,
MAC2STR(mgmt->sa));
wpa_hexdump(MSG_INFO, "RX IPN", mme + 2, 6);
wpa_hexdump(MSG_INFO, "Last RX IPN", bss->ipn[keyid], 6);
}
if (check_mmie_mic(bss->mgmt_group_cipher, bss->igtk[keyid],
bss->igtk_len[keyid], data, len) < 0) {
add_note(wt, MSG_INFO, "Invalid MME MIC in a Beacon frame from "
MACSTR, MAC2STR(mgmt->sa));
bss->counters[WLANTEST_BSS_COUNTER_INVALID_BIP_MMIE]++;
return;
}
add_note(wt, MSG_DEBUG, "Valid MME MIC in Beacon frame");
os_memcpy(bss->ipn[keyid], mme + 2, 6);
}
static void rx_mgmt_probe_resp(struct wlantest *wt, const u8 *data, size_t len)
{
const struct ieee80211_mgmt *mgmt;
struct wlantest_bss *bss;
struct ieee802_11_elems elems;
size_t offset;
mgmt = (const struct ieee80211_mgmt *) data;
offset = mgmt->u.probe_resp.variable - data;
if (len < offset)
return;
bss = bss_get(wt, mgmt->bssid);
if (bss == NULL)
return;
bss->counters[WLANTEST_BSS_COUNTER_PROBE_RESPONSE]++;
bss->capab_info = le_to_host16(mgmt->u.probe_resp.capab_info);
if (ieee802_11_parse_elems(mgmt->u.probe_resp.variable, len - offset,
&elems, 0) == ParseFailed) {
if (bss->parse_error_reported)
return;
add_note(wt, MSG_INFO, "Invalid IEs in a Probe Response frame "
"from " MACSTR, MAC2STR(mgmt->sa));
bss->parse_error_reported = 1;
return;
}
bss_update(wt, bss, &elems, 2);
}
static void process_fils_auth(struct wlantest *wt, struct wlantest_bss *bss,
struct wlantest_sta *sta,
const struct ieee80211_mgmt *mgmt, size_t len)
{
struct ieee802_11_elems elems;
u16 trans;
struct wpa_ie_data data;
if (sta->auth_alg != WLAN_AUTH_FILS_SK ||
len < IEEE80211_HDRLEN + sizeof(mgmt->u.auth))
return;
trans = le_to_host16(mgmt->u.auth.auth_transaction);
if (ieee802_11_parse_elems(mgmt->u.auth.variable,
len - IEEE80211_HDRLEN -
sizeof(mgmt->u.auth), &elems, 0) ==
ParseFailed)
return;
if (trans == 1) {
if (!elems.rsn_ie) {
add_note(wt, MSG_INFO,
"FILS Authentication frame missing RSNE");
return;
}
if (wpa_parse_wpa_ie_rsn(elems.rsn_ie - 2,
elems.rsn_ie_len + 2, &data) < 0) {
add_note(wt, MSG_INFO,
"Invalid RSNE in FILS Authentication frame");
return;
}
sta->key_mgmt = data.key_mgmt;
sta->pairwise_cipher = data.pairwise_cipher;
}
if (!elems.fils_nonce) {
add_note(wt, MSG_INFO,
"FILS Authentication frame missing nonce");
return;
}
if (os_memcmp(mgmt->sa, mgmt->bssid, ETH_ALEN) == 0)
os_memcpy(sta->anonce, elems.fils_nonce, FILS_NONCE_LEN);
else
os_memcpy(sta->snonce, elems.fils_nonce, FILS_NONCE_LEN);
}
static void process_ft_auth(struct wlantest *wt, struct wlantest_bss *bss,
struct wlantest_sta *sta,
const struct ieee80211_mgmt *mgmt, size_t len)
{
u16 trans;
struct wpa_ft_ies parse;
struct wpa_ptk ptk;
u8 ptk_name[WPA_PMK_NAME_LEN];
struct wlantest_bss *old_bss;
struct wlantest_sta *old_sta = NULL;
if (sta->auth_alg != WLAN_AUTH_FT ||
len < IEEE80211_HDRLEN + sizeof(mgmt->u.auth))
return;
trans = le_to_host16(mgmt->u.auth.auth_transaction);
if (wpa_ft_parse_ies(mgmt->u.auth.variable,
len - IEEE80211_HDRLEN - sizeof(mgmt->u.auth),
&parse, 0)) {
add_note(wt, MSG_INFO,
"Could not parse FT Authentication Response frame");
return;
}
if (trans == 1) {
sta->key_mgmt = parse.key_mgmt;
sta->pairwise_cipher = parse.pairwise_cipher;
return;
}
if (trans != 2)
return;
/* TODO: Should find the latest updated PMK-R0 value here instead
* copying the one from the first found matching old STA entry. */
dl_list_for_each(old_bss, &wt->bss, struct wlantest_bss, list) {
if (old_bss == bss)
continue;
old_sta = sta_find(old_bss, sta->addr);
if (old_sta)
break;
}
if (!old_sta)
return;
os_memcpy(sta->pmk_r0, old_sta->pmk_r0, old_sta->pmk_r0_len);
sta->pmk_r0_len = old_sta->pmk_r0_len;
os_memcpy(sta->pmk_r0_name, old_sta->pmk_r0_name,
sizeof(sta->pmk_r0_name));
if (parse.r1kh_id)
os_memcpy(bss->r1kh_id, parse.r1kh_id, FT_R1KH_ID_LEN);
if (wpa_derive_pmk_r1(sta->pmk_r0, sta->pmk_r0_len, sta->pmk_r0_name,
bss->r1kh_id, sta->addr, sta->pmk_r1,
sta->pmk_r1_name) < 0)
return;
sta->pmk_r1_len = sta->pmk_r0_len;
if (!parse.fte_anonce || !parse.fte_snonce ||
wpa_pmk_r1_to_ptk(sta->pmk_r1, sta->pmk_r1_len, parse.fte_snonce,
parse.fte_anonce, sta->addr, bss->bssid,
sta->pmk_r1_name, &ptk, ptk_name, sta->key_mgmt,
sta->pairwise_cipher, 0) < 0)
return;
sta_new_ptk(wt, sta, &ptk);
}
static void process_sae_auth(struct wlantest *wt, struct wlantest_bss *bss,
struct wlantest_sta *sta,
const struct ieee80211_mgmt *mgmt, size_t len)
{
u16 trans, status, group;
if (sta->auth_alg != WLAN_AUTH_SAE ||
len < IEEE80211_HDRLEN + sizeof(mgmt->u.auth) + 2)
return;
trans = le_to_host16(mgmt->u.auth.auth_transaction);
if (trans != 1)
return;
status = le_to_host16(mgmt->u.auth.status_code);
if (status != WLAN_STATUS_SUCCESS &&
status != WLAN_STATUS_SAE_HASH_TO_ELEMENT &&
status != WLAN_STATUS_SAE_PK)
return;
group = WPA_GET_LE16(mgmt->u.auth.variable);
wpa_printf(MSG_DEBUG, "SAE Commit using group %u", group);
sta->sae_group = group;
}
static void rx_mgmt_auth(struct wlantest *wt, const u8 *data, size_t len)
{
const struct ieee80211_mgmt *mgmt;
struct wlantest_bss *bss;
struct wlantest_sta *sta;
u16 alg, trans, status;
bool from_ap;
mgmt = (const struct ieee80211_mgmt *) data;
bss = bss_get(wt, mgmt->bssid);
if (bss == NULL)
return;
from_ap = os_memcmp(mgmt->sa, mgmt->bssid, ETH_ALEN) == 0;
if (from_ap)
sta = sta_get(bss, mgmt->da);
else
sta = sta_get(bss, mgmt->sa);
if (sta == NULL)
return;
if (len < 24 + 6) {
add_note(wt, MSG_INFO, "Too short Authentication frame from "
MACSTR, MAC2STR(mgmt->sa));
return;
}
alg = le_to_host16(mgmt->u.auth.auth_alg);
sta->auth_alg = alg;
trans = le_to_host16(mgmt->u.auth.auth_transaction);
status = le_to_host16(mgmt->u.auth.status_code);
wpa_printf(MSG_DEBUG, "AUTH " MACSTR " -> " MACSTR
" (alg=%u trans=%u status=%u)",
MAC2STR(mgmt->sa), MAC2STR(mgmt->da), alg, trans, status);
if (status == WLAN_STATUS_SUCCESS &&
((alg == WLAN_AUTH_OPEN && trans == 2) ||
(alg == WLAN_AUTH_SAE && trans == 2 && from_ap))) {
if (sta->state == STATE1) {
add_note(wt, MSG_DEBUG, "STA " MACSTR
" moved to State 2 with " MACSTR,
MAC2STR(sta->addr), MAC2STR(bss->bssid));
sta->state = STATE2;
}
}
if (os_memcmp(mgmt->sa, mgmt->bssid, ETH_ALEN) == 0)
sta->counters[WLANTEST_STA_COUNTER_AUTH_RX]++;
else
sta->counters[WLANTEST_STA_COUNTER_AUTH_TX]++;
process_fils_auth(wt, bss, sta, mgmt, len);
process_ft_auth(wt, bss, sta, mgmt, len);
process_sae_auth(wt, bss, sta, mgmt, len);
}
static void deauth_all_stas(struct wlantest *wt, struct wlantest_bss *bss)
{
struct wlantest_sta *sta;
dl_list_for_each(sta, &bss->sta, struct wlantest_sta, list) {
if (sta->state == STATE1)
continue;
add_note(wt, MSG_DEBUG, "STA " MACSTR
" moved to State 1 with " MACSTR,
MAC2STR(sta->addr), MAC2STR(bss->bssid));
sta->state = STATE1;
}
}
static void tdls_link_down(struct wlantest *wt, struct wlantest_bss *bss,
struct wlantest_sta *sta)
{
struct wlantest_tdls *tdls;
dl_list_for_each(tdls, &bss->tdls, struct wlantest_tdls, list) {
if ((tdls->init == sta || tdls->resp == sta) && tdls->link_up)
{
add_note(wt, MSG_DEBUG, "TDLS: Set link down based on "
"STA deauth/disassoc");
tdls->link_up = 0;
}
}
}
static void rx_mgmt_deauth(struct wlantest *wt, const u8 *data, size_t len,
int valid)
{
const struct ieee80211_mgmt *mgmt;
struct wlantest_bss *bss;
struct wlantest_sta *sta;
u16 fc, reason;
mgmt = (const struct ieee80211_mgmt *) data;
bss = bss_get(wt, mgmt->bssid);
if (bss == NULL)
return;
if (os_memcmp(mgmt->sa, mgmt->bssid, ETH_ALEN) == 0)
sta = sta_get(bss, mgmt->da);
else
sta = sta_get(bss, mgmt->sa);
if (len < 24 + 2) {
add_note(wt, MSG_INFO, "Too short Deauthentication frame from "
MACSTR, MAC2STR(mgmt->sa));
return;
}
reason = le_to_host16(mgmt->u.deauth.reason_code);
wpa_printf(MSG_DEBUG, "DEAUTH " MACSTR " -> " MACSTR
" (reason=%u) (valid=%d)",
MAC2STR(mgmt->sa), MAC2STR(mgmt->da),
reason, valid);
wpa_hexdump(MSG_MSGDUMP, "DEAUTH payload", data + 24, len - 24);
if (sta == NULL) {
if (valid && mgmt->da[0] == 0xff)
deauth_all_stas(wt, bss);
return;
}
if (os_memcmp(mgmt->sa, mgmt->bssid, ETH_ALEN) == 0) {
sta->counters[valid ? WLANTEST_STA_COUNTER_VALID_DEAUTH_RX :
WLANTEST_STA_COUNTER_INVALID_DEAUTH_RX]++;
if (sta->pwrmgt && !sta->pspoll)
sta->counters[WLANTEST_STA_COUNTER_DEAUTH_RX_ASLEEP]++;
else
sta->counters[WLANTEST_STA_COUNTER_DEAUTH_RX_AWAKE]++;
fc = le_to_host16(mgmt->frame_control);
if (!(fc & WLAN_FC_ISWEP) && reason == 6)
sta->counters[WLANTEST_STA_COUNTER_DEAUTH_RX_RC6]++;
else if (!(fc & WLAN_FC_ISWEP) && reason == 7)
sta->counters[WLANTEST_STA_COUNTER_DEAUTH_RX_RC7]++;
} else
sta->counters[valid ? WLANTEST_STA_COUNTER_VALID_DEAUTH_TX :
WLANTEST_STA_COUNTER_INVALID_DEAUTH_TX]++;
if (!valid) {
add_note(wt, MSG_INFO, "Do not change STA " MACSTR " State "
"since Disassociation frame was not protected "
"correctly", MAC2STR(sta->addr));
return;
}
if (sta->state != STATE1) {
add_note(wt, MSG_DEBUG, "STA " MACSTR
" moved to State 1 with " MACSTR,
MAC2STR(sta->addr), MAC2STR(bss->bssid));
sta->state = STATE1;
}
tdls_link_down(wt, bss, sta);
}
static const u8 * get_fils_session(const u8 *ies, size_t ies_len)
{
const u8 *ie, *end;
ie = ies;
end = ((const u8 *) ie) + ies_len;
while (ie + 1 < end) {
if (ie + 2 + ie[1] > end)
break;
if (ie[0] == WLAN_EID_EXTENSION &&
ie[1] >= 1 + FILS_SESSION_LEN &&
ie[2] == WLAN_EID_EXT_FILS_SESSION)
return ie;
ie += 2 + ie[1];
}
return NULL;
}
static int try_rmsk(struct wlantest *wt, struct wlantest_bss *bss,
struct wlantest_sta *sta, struct wlantest_pmk *pmk,
const u8 *frame_start, const u8 *frame_ad,
const u8 *frame_ad_end, const u8 *encr_end)
{
size_t pmk_len = 0;
u8 pmk_buf[PMK_LEN_MAX];
struct wpa_ptk ptk;
u8 ick[FILS_ICK_MAX_LEN];
size_t ick_len;
const u8 *aad[5];
size_t aad_len[5];
u8 buf[2000];
if (fils_rmsk_to_pmk(sta->key_mgmt, pmk->pmk, pmk->pmk_len,
sta->snonce, sta->anonce, NULL, 0,
pmk_buf, &pmk_len) < 0)
return -1;
if (fils_pmk_to_ptk(pmk_buf, pmk_len, sta->addr, bss->bssid,
sta->snonce, sta->anonce, NULL, 0,
&ptk, ick, &ick_len,
sta->key_mgmt, sta->pairwise_cipher,
NULL, NULL, 0) < 0)
return -1;
/* Check AES-SIV decryption with the derived key */
/* AES-SIV AAD vectors */
/* The STA's MAC address */
aad[0] = sta->addr;
aad_len[0] = ETH_ALEN;
/* The AP's BSSID */
aad[1] = bss->bssid;
aad_len[1] = ETH_ALEN;
/* The STA's nonce */
aad[2] = sta->snonce;
aad_len[2] = FILS_NONCE_LEN;
/* The AP's nonce */
aad[3] = sta->anonce;
aad_len[3] = FILS_NONCE_LEN;
/*
* The (Re)Association Request frame from the Capability Information
* field to the FILS Session element (both inclusive).
*/
aad[4] = frame_ad;
aad_len[4] = frame_ad_end - frame_ad;
if (encr_end - frame_ad_end < AES_BLOCK_SIZE ||
encr_end - frame_ad_end > sizeof(buf))
return -1;
if (aes_siv_decrypt(ptk.kek, ptk.kek_len,
frame_ad_end, encr_end - frame_ad_end,
5, aad, aad_len, buf) < 0) {
wpa_printf(MSG_DEBUG,
"FILS: Derived PTK did not match AES-SIV data");
return -1;
}
add_note(wt, MSG_DEBUG, "Derived FILS PTK");
os_memcpy(&sta->ptk, &ptk, sizeof(ptk));
sta->ptk_set = 1;
sta->counters[WLANTEST_STA_COUNTER_PTK_LEARNED]++;
wpa_hexdump(MSG_DEBUG, "FILS: Decrypted Association Request elements",
buf, encr_end - frame_ad_end - AES_BLOCK_SIZE);
if (wt->write_pcap_dumper || wt->pcapng) {
write_pcap_decrypted(wt, frame_start,
frame_ad_end - frame_start,
buf,
encr_end - frame_ad_end - AES_BLOCK_SIZE);
}
return 0;
}
static void derive_fils_keys(struct wlantest *wt, struct wlantest_bss *bss,
struct wlantest_sta *sta, const u8 *frame_start,
const u8 *frame_ad, const u8 *frame_ad_end,
const u8 *encr_end)
{
struct wlantest_pmk *pmk;
wpa_printf(MSG_DEBUG, "Trying to derive PTK for " MACSTR
" from FILS rMSK", MAC2STR(sta->addr));
dl_list_for_each(pmk, &bss->pmk, struct wlantest_pmk,
list) {
wpa_printf(MSG_DEBUG, "Try per-BSS PMK");
if (try_rmsk(wt, bss, sta, pmk, frame_start, frame_ad,
frame_ad_end, encr_end) == 0)
return;
}
dl_list_for_each(pmk, &wt->pmk, struct wlantest_pmk, list) {
wpa_printf(MSG_DEBUG, "Try global PMK");
if (try_rmsk(wt, bss, sta, pmk, frame_start, frame_ad,
frame_ad_end, encr_end) == 0)
return;
}
}
static void rx_mgmt_assoc_req(struct wlantest *wt, const u8 *data, size_t len)
{
const struct ieee80211_mgmt *mgmt;
struct wlantest_bss *bss;
struct wlantest_sta *sta;
struct ieee802_11_elems elems;
const u8 *ie;
size_t ie_len;
mgmt = (const struct ieee80211_mgmt *) data;
bss = bss_get(wt, mgmt->bssid);
if (bss == NULL)
return;
sta = sta_get(bss, mgmt->sa);
if (sta == NULL)
return;
if (len < 24 + 4) {
add_note(wt, MSG_INFO, "Too short Association Request frame "
"from " MACSTR, MAC2STR(mgmt->sa));
return;
}
wpa_printf(MSG_DEBUG, "ASSOCREQ " MACSTR " -> " MACSTR
" (capab=0x%x listen_int=%u)",
MAC2STR(mgmt->sa), MAC2STR(mgmt->da),
le_to_host16(mgmt->u.assoc_req.capab_info),
le_to_host16(mgmt->u.assoc_req.listen_interval));
sta->counters[WLANTEST_STA_COUNTER_ASSOCREQ_TX]++;
ie = mgmt->u.assoc_req.variable;
ie_len = len - (mgmt->u.assoc_req.variable - data);
if (sta->auth_alg == WLAN_AUTH_FILS_SK) {
const u8 *session, *frame_ad, *frame_ad_end, *encr_end;
session = get_fils_session(ie, ie_len);
if (session) {
frame_ad = (const u8 *) &mgmt->u.assoc_req.capab_info;
frame_ad_end = session + 2 + session[1];
encr_end = data + len;
derive_fils_keys(wt, bss, sta, data, frame_ad,
frame_ad_end, encr_end);
ie_len = session - ie;
}
}
if (ieee802_11_parse_elems(ie, ie_len, &elems, 0) == ParseFailed) {
add_note(wt, MSG_INFO, "Invalid IEs in Association Request "
"frame from " MACSTR, MAC2STR(mgmt->sa));
return;
}
if (elems.rsnxe) {
os_memcpy(sta->rsnxe, elems.rsnxe, elems.rsnxe_len);
sta->rsnxe_len = elems.rsnxe_len;
}
sta->assocreq_capab_info = le_to_host16(mgmt->u.assoc_req.capab_info);
sta->assocreq_listen_int =
le_to_host16(mgmt->u.assoc_req.listen_interval);
os_free(sta->assocreq_ies);
sta->assocreq_ies_len = len - (mgmt->u.assoc_req.variable - data);
sta->assocreq_ies = os_malloc(sta->assocreq_ies_len);
if (sta->assocreq_ies)
os_memcpy(sta->assocreq_ies, mgmt->u.assoc_req.variable,
sta->assocreq_ies_len);
sta->assocreq_seen = 1;
sta_update_assoc(sta, &elems);
if (elems.basic_mle)
parse_basic_ml(elems.basic_mle, elems.basic_mle_len, false);
}
static void decrypt_fils_assoc_resp(struct wlantest *wt,
struct wlantest_bss *bss,
struct wlantest_sta *sta,
const u8 *frame_start, const u8 *frame_ad,
const u8 *frame_ad_end, const u8 *encr_end)
{
const u8 *aad[5];
size_t aad_len[5];
u8 buf[2000];
if (!sta->ptk_set)
return;
/* Check AES-SIV decryption with the derived key */
/* AES-SIV AAD vectors */
/* The AP's BSSID */
aad[0] = bss->bssid;
aad_len[0] = ETH_ALEN;
/* The STA's MAC address */
aad[1] = sta->addr;
aad_len[1] = ETH_ALEN;
/* The AP's nonce */
aad[2] = sta->anonce;
aad_len[2] = FILS_NONCE_LEN;
/* The STA's nonce */
aad[3] = sta->snonce;
aad_len[3] = FILS_NONCE_LEN;
/*
* The (Re)Association Response frame from the Capability Information
* field to the FILS Session element (both inclusive).
*/
aad[4] = frame_ad;
aad_len[4] = frame_ad_end - frame_ad;
if (encr_end - frame_ad_end < AES_BLOCK_SIZE ||
encr_end - frame_ad_end > sizeof(buf))
return;
if (aes_siv_decrypt(sta->ptk.kek, sta->ptk.kek_len,
frame_ad_end, encr_end - frame_ad_end,
5, aad, aad_len, buf) < 0) {
wpa_printf(MSG_DEBUG,
"FILS: Derived PTK did not match AES-SIV data");
return;
}
wpa_hexdump(MSG_DEBUG, "FILS: Decrypted Association Response elements",
buf, encr_end - frame_ad_end - AES_BLOCK_SIZE);
if (wt->write_pcap_dumper || wt->pcapng) {
write_pcap_decrypted(wt, frame_start,
frame_ad_end - frame_start,
buf,
encr_end - frame_ad_end - AES_BLOCK_SIZE);
}
}
static void rx_mgmt_assoc_resp(struct wlantest *wt, const u8 *data, size_t len)
{
const struct ieee80211_mgmt *mgmt;
struct wlantest_bss *bss;
struct wlantest_sta *sta;
u16 capab, status, aid;
const u8 *ies;
size_t ies_len;
struct wpa_ft_ies parse;
const u8 *ml;
mgmt = (const struct ieee80211_mgmt *) data;
bss = bss_get(wt, mgmt->bssid);
if (bss == NULL)
return;
sta = sta_get(bss, mgmt->da);
if (sta == NULL)
return;
if (len < 24 + 6) {
add_note(wt, MSG_INFO, "Too short Association Response frame "
"from " MACSTR, MAC2STR(mgmt->sa));
return;
}
ies = mgmt->u.assoc_resp.variable;
ies_len = len - (mgmt->u.assoc_resp.variable - data);
capab = le_to_host16(mgmt->u.assoc_resp.capab_info);
status = le_to_host16(mgmt->u.assoc_resp.status_code);
aid = le_to_host16(mgmt->u.assoc_resp.aid);
wpa_printf(MSG_DEBUG, "ASSOCRESP " MACSTR " -> " MACSTR
" (capab=0x%x status=%u aid=%u)",
MAC2STR(mgmt->sa), MAC2STR(mgmt->da), capab, status,
aid & 0x3fff);
ml = get_ml_ie(ies, ies_len, MULTI_LINK_CONTROL_TYPE_BASIC);
if (ml)
parse_basic_ml(ml + 3, ml[1], true);
if (sta->auth_alg == WLAN_AUTH_FILS_SK) {
const u8 *session, *frame_ad, *frame_ad_end, *encr_end;
session = get_fils_session(ies, ies_len);
if (session) {
frame_ad = (const u8 *) &mgmt->u.assoc_resp.capab_info;
frame_ad_end = session + 2 + session[1];
encr_end = data + len;
decrypt_fils_assoc_resp(wt, bss, sta, data, frame_ad,
frame_ad_end, encr_end);
ies_len = session - ies;
}
}
if (status == WLAN_STATUS_ASSOC_REJECTED_TEMPORARILY) {
struct ieee802_11_elems elems;
if (ieee802_11_parse_elems(ies, ies_len, &elems, 0) ==
ParseFailed) {
add_note(wt, MSG_INFO, "Failed to parse IEs in "
"AssocResp from " MACSTR,
MAC2STR(mgmt->sa));
} else if (elems.timeout_int == NULL ||
elems.timeout_int[0] !=
WLAN_TIMEOUT_ASSOC_COMEBACK) {
add_note(wt, MSG_INFO, "No valid Timeout Interval IE "
"with Assoc Comeback time in AssocResp "
"(status=30) from " MACSTR,
MAC2STR(mgmt->sa));
} else {
sta->counters[
WLANTEST_STA_COUNTER_ASSOCRESP_COMEBACK]++;
}
}
if (status)
return;
if ((aid & 0xc000) != 0xc000) {
add_note(wt, MSG_DEBUG, "Two MSBs of the AID were not set to 1 "
"in Association Response from " MACSTR,
MAC2STR(mgmt->sa));
}
sta->aid = aid & 0xc000;
if (sta->state < STATE2) {
add_note(wt, MSG_DEBUG,
"STA " MACSTR " was not in State 2 when "
"getting associated", MAC2STR(sta->addr));
}
if (sta->state < STATE3) {
add_note(wt, MSG_DEBUG, "STA " MACSTR
" moved to State 3 with " MACSTR,
MAC2STR(sta->addr), MAC2STR(bss->bssid));
sta->state = STATE3;
}
if (wpa_ft_parse_ies(ies, ies_len, &parse, 0) == 0) {
if (parse.r0kh_id) {
os_memcpy(bss->r0kh_id, parse.r0kh_id,
parse.r0kh_id_len);
bss->r0kh_id_len = parse.r0kh_id_len;
}
if (parse.r1kh_id)
os_memcpy(bss->r1kh_id, parse.r1kh_id, FT_R1KH_ID_LEN);
}
}
static void rx_mgmt_reassoc_req(struct wlantest *wt, const u8 *data,
size_t len)
{
const struct ieee80211_mgmt *mgmt;
struct wlantest_bss *bss;
struct wlantest_sta *sta;
struct ieee802_11_elems elems;
const u8 *ie;
size_t ie_len;
mgmt = (const struct ieee80211_mgmt *) data;
bss = bss_get(wt, mgmt->bssid);
if (bss == NULL)
return;
sta = sta_get(bss, mgmt->sa);
if (sta == NULL)
return;
if (len < 24 + 4 + ETH_ALEN) {
add_note(wt, MSG_INFO, "Too short Reassociation Request frame "
"from " MACSTR, MAC2STR(mgmt->sa));
return;
}
wpa_printf(MSG_DEBUG, "REASSOCREQ " MACSTR " -> " MACSTR
" (capab=0x%x listen_int=%u current_ap=" MACSTR ")",
MAC2STR(mgmt->sa), MAC2STR(mgmt->da),
le_to_host16(mgmt->u.reassoc_req.capab_info),
le_to_host16(mgmt->u.reassoc_req.listen_interval),
MAC2STR(mgmt->u.reassoc_req.current_ap));
sta->counters[WLANTEST_STA_COUNTER_REASSOCREQ_TX]++;
ie = mgmt->u.reassoc_req.variable;
ie_len = len - (mgmt->u.reassoc_req.variable - data);
if (sta->auth_alg == WLAN_AUTH_FILS_SK) {
const u8 *session, *frame_ad, *frame_ad_end, *encr_end;
session = get_fils_session(ie, ie_len);
if (session) {
frame_ad = (const u8 *) &mgmt->u.reassoc_req.capab_info;
frame_ad_end = session + 2 + session[1];
encr_end = data + len;
derive_fils_keys(wt, bss, sta, data, frame_ad,
frame_ad_end, encr_end);
ie_len = session - ie;
}
}
if (ieee802_11_parse_elems(ie, ie_len, &elems, 0) == ParseFailed) {
add_note(wt, MSG_INFO, "Invalid IEs in Reassociation Request "
"frame from " MACSTR, MAC2STR(mgmt->sa));
return;
}
if (elems.rsnxe) {
os_memcpy(sta->rsnxe, elems.rsnxe, elems.rsnxe_len);
sta->rsnxe_len = elems.rsnxe_len;
}
sta->assocreq_capab_info =
le_to_host16(mgmt->u.reassoc_req.capab_info);
sta->assocreq_listen_int =
le_to_host16(mgmt->u.reassoc_req.listen_interval);
os_free(sta->assocreq_ies);
sta->assocreq_ies_len = len - (mgmt->u.reassoc_req.variable - data);
sta->assocreq_ies = os_malloc(sta->assocreq_ies_len);
if (sta->assocreq_ies)
os_memcpy(sta->assocreq_ies, mgmt->u.reassoc_req.variable,
sta->assocreq_ies_len);
sta->assocreq_seen = 1;
sta_update_assoc(sta, &elems);
if (elems.basic_mle)
parse_basic_ml(elems.basic_mle, elems.basic_mle_len, false);
if (elems.ftie) {
struct wpa_ft_ies parse;
int use_sha384;
struct rsn_mdie *mde;
const u8 *anonce, *snonce, *fte_mic;
u8 fte_elem_count;
unsigned int count;
u8 mic[WPA_EAPOL_KEY_MIC_MAX_LEN];
size_t mic_len = 16;
const u8 *kck;
size_t kck_len;
use_sha384 = wpa_key_mgmt_sha384(sta->key_mgmt);
if (wpa_ft_parse_ies(ie, ie_len, &parse, sta->key_mgmt) < 0) {
add_note(wt, MSG_INFO, "FT: Failed to parse FT IEs");
return;
}
if (!parse.rsn) {
add_note(wt, MSG_INFO, "FT: No RSNE in Reassoc Req");
return;
}
if (!parse.rsn_pmkid) {
add_note(wt, MSG_INFO, "FT: No PMKID in RSNE");
return;
}
if (os_memcmp_const(parse.rsn_pmkid, sta->pmk_r1_name,
WPA_PMK_NAME_LEN) != 0) {
add_note(wt, MSG_INFO,
"FT: PMKID in Reassoc Req did not match PMKR1Name");
wpa_hexdump(MSG_DEBUG,
"FT: Received RSNE[PMKR1Name]",
parse.rsn_pmkid, WPA_PMK_NAME_LEN);
wpa_hexdump(MSG_DEBUG,
"FT: Previously derived PMKR1Name",
sta->pmk_r1_name, WPA_PMK_NAME_LEN);
return;
}
mde = (struct rsn_mdie *) parse.mdie;
if (!mde || parse.mdie_len < sizeof(*mde) ||
os_memcmp(mde->mobility_domain, bss->mdid,
MOBILITY_DOMAIN_ID_LEN) != 0) {
add_note(wt, MSG_INFO, "FT: Invalid MDE");
}
if (use_sha384) {
struct rsn_ftie_sha384 *fte;
fte = (struct rsn_ftie_sha384 *) parse.ftie;
if (!fte || parse.ftie_len < sizeof(*fte)) {
add_note(wt, MSG_INFO, "FT: Invalid FTE");
return;
}
anonce = fte->anonce;
snonce = fte->snonce;
fte_elem_count = fte->mic_control[1];
fte_mic = fte->mic;
} else {
struct rsn_ftie *fte;
fte = (struct rsn_ftie *) parse.ftie;
if (!fte || parse.ftie_len < sizeof(*fte)) {
add_note(wt, MSG_INFO, "FT: Invalid FTIE");
return;
}
anonce = fte->anonce;
snonce = fte->snonce;
fte_elem_count = fte->mic_control[1];
fte_mic = fte->mic;
}
if (os_memcmp(snonce, sta->snonce, WPA_NONCE_LEN) != 0) {
add_note(wt, MSG_INFO, "FT: SNonce mismatch in FTIE");
wpa_hexdump(MSG_DEBUG, "FT: Received SNonce",
snonce, WPA_NONCE_LEN);
wpa_hexdump(MSG_DEBUG, "FT: Expected SNonce",
sta->snonce, WPA_NONCE_LEN);
return;
}
if (os_memcmp(anonce, sta->anonce, WPA_NONCE_LEN) != 0) {
add_note(wt, MSG_INFO, "FT: ANonce mismatch in FTIE");
wpa_hexdump(MSG_DEBUG, "FT: Received ANonce",
anonce, WPA_NONCE_LEN);
wpa_hexdump(MSG_DEBUG, "FT: Expected ANonce",
sta->anonce, WPA_NONCE_LEN);
return;
}
if (!parse.r0kh_id) {
add_note(wt, MSG_INFO, "FT: No R0KH-ID subelem in FTE");
return;
}
os_memcpy(bss->r0kh_id, parse.r0kh_id, parse.r0kh_id_len);
bss->r0kh_id_len = parse.r0kh_id_len;
if (!parse.r1kh_id) {
add_note(wt, MSG_INFO, "FT: No R1KH-ID subelem in FTE");
return;
}
os_memcpy(bss->r1kh_id, parse.r1kh_id, FT_R1KH_ID_LEN);
if (!parse.rsn_pmkid ||
os_memcmp_const(parse.rsn_pmkid, sta->pmk_r1_name,
WPA_PMK_NAME_LEN)) {
add_note(wt, MSG_INFO,
"FT: No matching PMKR1Name (PMKID) in RSNE (pmkid=%d)",
!!parse.rsn_pmkid);
return;
}
count = 3;
if (parse.ric)
count += ieee802_11_ie_count(parse.ric, parse.ric_len);
if (parse.rsnxe)
count++;
if (fte_elem_count != count) {
add_note(wt, MSG_INFO,
"FT: Unexpected IE count in MIC Control: received %u expected %u",
fte_elem_count, count);
return;
}
if (wpa_key_mgmt_fils(sta->key_mgmt)) {
kck = sta->ptk.kck2;
kck_len = sta->ptk.kck2_len;
} else {
kck = sta->ptk.kck;
kck_len = sta->ptk.kck_len;
}
if (wpa_ft_mic(sta->key_mgmt, kck, kck_len,
sta->addr, bss->bssid, 5,
parse.mdie - 2, parse.mdie_len + 2,
parse.ftie - 2, parse.ftie_len + 2,
parse.rsn - 2, parse.rsn_len + 2,
parse.ric, parse.ric_len,
parse.rsnxe ? parse.rsnxe - 2 : NULL,
parse.rsnxe ? parse.rsnxe_len + 2 : 0,
mic) < 0) {
add_note(wt, MSG_INFO, "FT: Failed to calculate MIC");
return;
}
if (os_memcmp_const(mic, fte_mic, mic_len) != 0) {
add_note(wt, MSG_INFO, "FT: Invalid MIC in FTE");
wpa_printf(MSG_DEBUG,
"FT: addr=" MACSTR " auth_addr=" MACSTR,
MAC2STR(sta->addr),
MAC2STR(bss->bssid));
wpa_hexdump(MSG_MSGDUMP, "FT: Received MIC",
fte_mic, mic_len);
wpa_hexdump(MSG_MSGDUMP, "FT: Calculated MIC",
mic, mic_len);
wpa_hexdump(MSG_MSGDUMP, "FT: MDE",
parse.mdie - 2, parse.mdie_len + 2);
wpa_hexdump(MSG_MSGDUMP, "FT: FTE",
parse.ftie - 2, parse.ftie_len + 2);
wpa_hexdump(MSG_MSGDUMP, "FT: RSN",
parse.rsn - 2, parse.rsn_len + 2);
wpa_hexdump(MSG_MSGDUMP, "FT: RSNXE",
parse.rsnxe ? parse.rsnxe - 2 : NULL,
parse.rsnxe ? parse.rsnxe_len + 2 : 0);
return;
}
add_note(wt, MSG_INFO, "FT: Valid FTE MIC");
}
}
static void process_gtk_subelem(struct wlantest *wt, struct wlantest_bss *bss,
struct wlantest_sta *sta,
const u8 *kek, size_t kek_len,
const u8 *gtk_elem,
size_t gtk_elem_len)
{
u8 gtk[32];
int keyidx;
enum wpa_alg alg;
size_t gtk_len, keylen;
const u8 *rsc;
if (!gtk_elem) {
add_note(wt, MSG_INFO, "FT: No GTK included in FTE");
return;
}
wpa_hexdump(MSG_DEBUG, "FT: Received GTK in Reassoc Resp",
gtk_elem, gtk_elem_len);
if (gtk_elem_len < 11 + 24 || (gtk_elem_len - 11) % 8 ||
gtk_elem_len - 19 > sizeof(gtk)) {
add_note(wt, MSG_INFO, "FT: Invalid GTK sub-elem length %zu",
gtk_elem_len);
return;
}
gtk_len = gtk_elem_len - 19;
if (aes_unwrap(kek, kek_len, gtk_len / 8, gtk_elem + 11, gtk)) {
add_note(wt, MSG_INFO,
"FT: AES unwrap failed - could not decrypt GTK");
return;
}
keylen = wpa_cipher_key_len(bss->group_cipher);
alg = wpa_cipher_to_alg(bss->group_cipher);
if (alg == WPA_ALG_NONE) {
add_note(wt, MSG_INFO, "FT: Unsupported Group Cipher %d",
bss->group_cipher);
return;
}
if (gtk_len < keylen) {
add_note(wt, MSG_INFO, "FT: Too short GTK in FTE");
return;
}
/* Key Info[2] | Key Length[1] | RSC[8] | Key[5..32]. */
keyidx = WPA_GET_LE16(gtk_elem) & 0x03;
if (gtk_elem[2] != keylen) {
add_note(wt, MSG_INFO,
"FT: GTK length mismatch: received %u negotiated %zu",
gtk_elem[2], keylen);
return;
}
add_note(wt, MSG_DEBUG, "GTK KeyID=%u", keyidx);
wpa_hexdump(MSG_DEBUG, "FT: GTK from Reassoc Resp", gtk, keylen);
if (bss->group_cipher == WPA_CIPHER_TKIP) {
/* Swap Tx/Rx keys for Michael MIC */
u8 tmp[8];
os_memcpy(tmp, gtk + 16, 8);
os_memcpy(gtk + 16, gtk + 24, 8);
os_memcpy(gtk + 24, tmp, 8);
}
bss->gtk_len[keyidx] = gtk_len;
sta->gtk_len = gtk_len;
os_memcpy(bss->gtk[keyidx], gtk, gtk_len);
os_memcpy(sta->gtk, gtk, gtk_len);
rsc = gtk_elem + 2;
bss->rsc[keyidx][0] = rsc[5];
bss->rsc[keyidx][1] = rsc[4];
bss->rsc[keyidx][2] = rsc[3];
bss->rsc[keyidx][3] = rsc[2];
bss->rsc[keyidx][4] = rsc[1];
bss->rsc[keyidx][5] = rsc[0];
bss->gtk_idx = keyidx;
sta->gtk_idx = keyidx;
wpa_hexdump(MSG_DEBUG, "RSC", bss->rsc[keyidx], 6);
}
static void process_igtk_subelem(struct wlantest *wt, struct wlantest_bss *bss,
struct wlantest_sta *sta,
const u8 *kek, size_t kek_len,
const u8 *igtk_elem, size_t igtk_elem_len)
{
u8 igtk[WPA_IGTK_MAX_LEN];
size_t igtk_len;
u16 keyidx;
const u8 *ipn;
if (bss->mgmt_group_cipher != WPA_CIPHER_AES_128_CMAC &&
bss->mgmt_group_cipher != WPA_CIPHER_BIP_GMAC_128 &&
bss->mgmt_group_cipher != WPA_CIPHER_BIP_GMAC_256 &&
bss->mgmt_group_cipher != WPA_CIPHER_BIP_CMAC_256)
return;
if (!igtk_elem) {
add_note(wt, MSG_INFO, "FT: No IGTK included in FTE");
return;
}
wpa_hexdump(MSG_DEBUG, "FT: Received IGTK in Reassoc Resp",
igtk_elem, igtk_elem_len);
igtk_len = wpa_cipher_key_len(bss->mgmt_group_cipher);
if (igtk_elem_len != 2 + 6 + 1 + igtk_len + 8) {
add_note(wt, MSG_INFO, "FT: Invalid IGTK sub-elem length %zu",
igtk_elem_len);
return;
}
if (igtk_elem[8] != igtk_len) {
add_note(wt, MSG_INFO,
"FT: Invalid IGTK sub-elem Key Length %d",
igtk_elem[8]);
return;
}
if (aes_unwrap(kek, kek_len, igtk_len / 8, igtk_elem + 9, igtk)) {
add_note(wt, MSG_INFO,
"FT: AES unwrap failed - could not decrypt IGTK");
return;
}
/* KeyID[2] | IPN[6] | Key Length[1] | Key[16+8] */
keyidx = WPA_GET_LE16(igtk_elem);
wpa_hexdump(MSG_DEBUG, "FT: IGTK from Reassoc Resp", igtk, igtk_len);
if (keyidx < 4 || keyidx > 5) {
add_note(wt, MSG_INFO, "Unexpected IGTK KeyID %u", keyidx);
return;
}
add_note(wt, MSG_DEBUG, "IGTK KeyID %u", keyidx);
wpa_hexdump(MSG_DEBUG, "IPN", igtk_elem + 2, 6);
wpa_hexdump(MSG_DEBUG, "IGTK", igtk, igtk_len);
os_memcpy(bss->igtk[keyidx], igtk, igtk_len);
bss->igtk_len[keyidx] = igtk_len;
ipn = igtk_elem + 2;
bss->ipn[keyidx][0] = ipn[5];
bss->ipn[keyidx][1] = ipn[4];
bss->ipn[keyidx][2] = ipn[3];
bss->ipn[keyidx][3] = ipn[2];
bss->ipn[keyidx][4] = ipn[1];
bss->ipn[keyidx][5] = ipn[0];
bss->igtk_idx = keyidx;
}
static void process_bigtk_subelem(struct wlantest *wt, struct wlantest_bss *bss,
struct wlantest_sta *sta,
const u8 *kek, size_t kek_len,
const u8 *bigtk_elem, size_t bigtk_elem_len)
{
u8 bigtk[WPA_BIGTK_MAX_LEN];
size_t bigtk_len;
u16 keyidx;
const u8 *ipn;
if (!bigtk_elem ||
(bss->mgmt_group_cipher != WPA_CIPHER_AES_128_CMAC &&
bss->mgmt_group_cipher != WPA_CIPHER_BIP_GMAC_128 &&
bss->mgmt_group_cipher != WPA_CIPHER_BIP_GMAC_256 &&
bss->mgmt_group_cipher != WPA_CIPHER_BIP_CMAC_256))
return;
wpa_hexdump_key(MSG_DEBUG, "FT: Received BIGTK in Reassoc Resp",
bigtk_elem, bigtk_elem_len);
bigtk_len = wpa_cipher_key_len(bss->mgmt_group_cipher);
if (bigtk_elem_len != 2 + 6 + 1 + bigtk_len + 8) {
add_note(wt, MSG_INFO,
"FT: Invalid BIGTK sub-elem length %zu",
bigtk_elem_len);
return;
}
if (bigtk_elem[8] != bigtk_len) {
add_note(wt, MSG_INFO,
"FT: Invalid BIGTK sub-elem Key Length %d",
bigtk_elem[8]);
return;
}
if (aes_unwrap(kek, kek_len, bigtk_len / 8, bigtk_elem + 9, bigtk)) {
add_note(wt, MSG_INFO,
"FT: AES unwrap failed - could not decrypt BIGTK");
return;
}
/* KeyID[2] | IPN[6] | Key Length[1] | Key[16+8] */
keyidx = WPA_GET_LE16(bigtk_elem);
wpa_hexdump(MSG_DEBUG, "FT: BIGTK from Reassoc Resp", bigtk, bigtk_len);
if (keyidx < 6 || keyidx > 7) {
add_note(wt, MSG_INFO, "Unexpected BIGTK KeyID %u", keyidx);
return;
}
add_note(wt, MSG_DEBUG, "BIGTK KeyID %u", keyidx);
wpa_hexdump(MSG_DEBUG, "BIPN", bigtk_elem + 2, 6);
wpa_hexdump(MSG_DEBUG, "BIGTK", bigtk, bigtk_len);
os_memcpy(bss->igtk[keyidx], bigtk, bigtk_len);
bss->igtk_len[keyidx] = bigtk_len;
ipn = bigtk_elem + 2;
bss->ipn[keyidx][0] = ipn[5];
bss->ipn[keyidx][1] = ipn[4];
bss->ipn[keyidx][2] = ipn[3];
bss->ipn[keyidx][3] = ipn[2];
bss->ipn[keyidx][4] = ipn[1];
bss->ipn[keyidx][5] = ipn[0];
bss->bigtk_idx = keyidx;
}
static void rx_mgmt_reassoc_resp(struct wlantest *wt, const u8 *data,
size_t len)
{
const struct ieee80211_mgmt *mgmt;
struct wlantest_bss *bss;
struct wlantest_sta *sta;
u16 capab, status, aid;
const u8 *ies;
size_t ies_len;
struct ieee802_11_elems elems;
const u8 *ml;
mgmt = (const struct ieee80211_mgmt *) data;
bss = bss_get(wt, mgmt->bssid);
if (bss == NULL)
return;
sta = sta_get(bss, mgmt->da);
if (sta == NULL)
return;
if (len < 24 + 6) {
add_note(wt, MSG_INFO, "Too short Reassociation Response frame "
"from " MACSTR, MAC2STR(mgmt->sa));
return;
}
ies = mgmt->u.reassoc_resp.variable;
ies_len = len - (mgmt->u.reassoc_resp.variable - data);
capab = le_to_host16(mgmt->u.reassoc_resp.capab_info);
status = le_to_host16(mgmt->u.reassoc_resp.status_code);
aid = le_to_host16(mgmt->u.reassoc_resp.aid);
wpa_printf(MSG_DEBUG, "REASSOCRESP " MACSTR " -> " MACSTR
" (capab=0x%x status=%u aid=%u)",
MAC2STR(mgmt->sa), MAC2STR(mgmt->da), capab, status,
aid & 0x3fff);
ml = get_ml_ie(ies, ies_len, MULTI_LINK_CONTROL_TYPE_BASIC);
if (ml)
parse_basic_ml(ml + 3, ml[1], true);
if (sta->auth_alg == WLAN_AUTH_FILS_SK) {
const u8 *session, *frame_ad, *frame_ad_end, *encr_end;
session = get_fils_session(ies, ies_len);
if (session) {
frame_ad = (const u8 *)
&mgmt->u.reassoc_resp.capab_info;
frame_ad_end = session + 2 + session[1];
encr_end = data + len;
decrypt_fils_assoc_resp(wt, bss, sta, data, frame_ad,
frame_ad_end, encr_end);
ies_len = session - ies;
}
}
if (ieee802_11_parse_elems(ies, ies_len, &elems, 0) == ParseFailed) {
add_note(wt, MSG_INFO,
"Failed to parse IEs in ReassocResp from " MACSTR,
MAC2STR(mgmt->sa));
}
if (status == WLAN_STATUS_ASSOC_REJECTED_TEMPORARILY) {
if (!elems.timeout_int ||
elems.timeout_int[0] != WLAN_TIMEOUT_ASSOC_COMEBACK) {
add_note(wt, MSG_INFO, "No valid Timeout Interval IE "
"with Assoc Comeback time in ReassocResp "
"(status=30) from " MACSTR,
MAC2STR(mgmt->sa));
} else {
sta->counters[
WLANTEST_STA_COUNTER_REASSOCRESP_COMEBACK]++;
}
}
if (status)
return;
if ((aid & 0xc000) != 0xc000) {
add_note(wt, MSG_DEBUG, "Two MSBs of the AID were not set to 1 "
"in Reassociation Response from " MACSTR,
MAC2STR(mgmt->sa));
}
sta->aid = aid & 0xc000;
if (sta->state < STATE2 && !sta->ft_over_ds) {
add_note(wt, MSG_DEBUG,
"STA " MACSTR " was not in State 2 when "
"getting associated", MAC2STR(sta->addr));
}
if (sta->state < STATE3) {
add_note(wt, MSG_DEBUG, "STA " MACSTR
" moved to State 3 with " MACSTR,
MAC2STR(sta->addr), MAC2STR(bss->bssid));
sta->state = STATE3;
}
if (elems.ftie) {
struct wpa_ft_ies parse;
int use_sha384;
struct rsn_mdie *mde;
const u8 *anonce, *snonce, *fte_mic;
u8 fte_elem_count;
unsigned int count;
u8 mic[WPA_EAPOL_KEY_MIC_MAX_LEN];
size_t mic_len = 16;
const u8 *kck, *kek;
size_t kck_len, kek_len;
use_sha384 = wpa_key_mgmt_sha384(sta->key_mgmt);
if (wpa_ft_parse_ies(ies, ies_len, &parse, sta->key_mgmt) < 0) {
add_note(wt, MSG_INFO, "FT: Failed to parse FT IEs");
return;
}
if (!parse.rsn) {
add_note(wt, MSG_INFO, "FT: No RSNE in Reassoc Resp");
return;
}
if (!parse.rsn_pmkid) {
add_note(wt, MSG_INFO, "FT: No PMKID in RSNE");
return;
}
if (os_memcmp_const(parse.rsn_pmkid, sta->pmk_r1_name,
WPA_PMK_NAME_LEN) != 0) {
add_note(wt, MSG_INFO,
"FT: PMKID in Reassoc Resp did not match PMKR1Name");
wpa_hexdump(MSG_DEBUG,
"FT: Received RSNE[PMKR1Name]",
parse.rsn_pmkid, WPA_PMK_NAME_LEN);
wpa_hexdump(MSG_DEBUG,
"FT: Previously derived PMKR1Name",
sta->pmk_r1_name, WPA_PMK_NAME_LEN);
return;
}
mde = (struct rsn_mdie *) parse.mdie;
if (!mde || parse.mdie_len < sizeof(*mde) ||
os_memcmp(mde->mobility_domain, bss->mdid,
MOBILITY_DOMAIN_ID_LEN) != 0) {
add_note(wt, MSG_INFO, "FT: Invalid MDE");
}
if (use_sha384) {
struct rsn_ftie_sha384 *fte;
fte = (struct rsn_ftie_sha384 *) parse.ftie;
if (!fte || parse.ftie_len < sizeof(*fte)) {
add_note(wt, MSG_INFO, "FT: Invalid FTE");
return;
}
anonce = fte->anonce;
snonce = fte->snonce;
fte_elem_count = fte->mic_control[1];
fte_mic = fte->mic;
} else {
struct rsn_ftie *fte;
fte = (struct rsn_ftie *) parse.ftie;
if (!fte || parse.ftie_len < sizeof(*fte)) {
add_note(wt, MSG_INFO, "FT: Invalid FTIE");
return;
}
anonce = fte->anonce;
snonce = fte->snonce;
fte_elem_count = fte->mic_control[1];
fte_mic = fte->mic;
}
if (os_memcmp(snonce, sta->snonce, WPA_NONCE_LEN) != 0) {
add_note(wt, MSG_INFO, "FT: SNonce mismatch in FTIE");
wpa_hexdump(MSG_DEBUG, "FT: Received SNonce",
snonce, WPA_NONCE_LEN);
wpa_hexdump(MSG_DEBUG, "FT: Expected SNonce",
sta->snonce, WPA_NONCE_LEN);
return;
}
if (os_memcmp(anonce, sta->anonce, WPA_NONCE_LEN) != 0) {
add_note(wt, MSG_INFO, "FT: ANonce mismatch in FTIE");
wpa_hexdump(MSG_DEBUG, "FT: Received ANonce",
anonce, WPA_NONCE_LEN);
wpa_hexdump(MSG_DEBUG, "FT: Expected ANonce",
sta->anonce, WPA_NONCE_LEN);
return;
}
if (!parse.r0kh_id) {
add_note(wt, MSG_INFO, "FT: No R0KH-ID subelem in FTE");
return;
}
if (parse.r0kh_id_len != bss->r0kh_id_len ||
os_memcmp_const(parse.r0kh_id, bss->r0kh_id,
parse.r0kh_id_len) != 0) {
add_note(wt, MSG_INFO,
"FT: R0KH-ID in FTE did not match the current R0KH-ID");
wpa_hexdump(MSG_DEBUG, "FT: R0KH-ID in FTIE",
parse.r0kh_id, parse.r0kh_id_len);
wpa_hexdump(MSG_DEBUG, "FT: The current R0KH-ID",
bss->r0kh_id, bss->r0kh_id_len);
os_memcpy(bss->r0kh_id, parse.r0kh_id,
parse.r0kh_id_len);
bss->r0kh_id_len = parse.r0kh_id_len;
}
if (!parse.r1kh_id) {
add_note(wt, MSG_INFO, "FT: No R1KH-ID subelem in FTE");
return;
}
if (os_memcmp_const(parse.r1kh_id, bss->r1kh_id,
FT_R1KH_ID_LEN) != 0) {
add_note(wt, MSG_INFO,
"FT: Unknown R1KH-ID used in ReassocResp");
os_memcpy(bss->r1kh_id, parse.r1kh_id, FT_R1KH_ID_LEN);
}
count = 3;
if (parse.ric)
count += ieee802_11_ie_count(parse.ric, parse.ric_len);
if (parse.rsnxe)
count++;
if (fte_elem_count != count) {
add_note(wt, MSG_INFO,
"FT: Unexpected IE count in MIC Control: received %u expected %u",
fte_elem_count, count);
return;
}
if (wpa_key_mgmt_fils(sta->key_mgmt)) {
kck = sta->ptk.kck2;
kck_len = sta->ptk.kck2_len;
kek = sta->ptk.kek2;
kek_len = sta->ptk.kek2_len;
} else {
kck = sta->ptk.kck;
kck_len = sta->ptk.kck_len;
kek = sta->ptk.kek;
kek_len = sta->ptk.kek_len;
}
if (wpa_ft_mic(sta->key_mgmt, kck, kck_len,
sta->addr, bss->bssid, 6,
parse.mdie - 2, parse.mdie_len + 2,
parse.ftie - 2, parse.ftie_len + 2,
parse.rsn - 2, parse.rsn_len + 2,
parse.ric, parse.ric_len,
parse.rsnxe ? parse.rsnxe - 2 : NULL,
parse.rsnxe ? parse.rsnxe_len + 2 : 0,
mic) < 0) {
add_note(wt, MSG_INFO, "FT: Failed to calculate MIC");
return;
}
if (os_memcmp_const(mic, fte_mic, mic_len) != 0) {
add_note(wt, MSG_INFO, "FT: Invalid MIC in FTE");
wpa_printf(MSG_DEBUG,
"FT: addr=" MACSTR " auth_addr=" MACSTR,
MAC2STR(sta->addr),
MAC2STR(bss->bssid));
wpa_hexdump(MSG_MSGDUMP, "FT: Received MIC",
fte_mic, mic_len);
wpa_hexdump(MSG_MSGDUMP, "FT: Calculated MIC",
mic, mic_len);
wpa_hexdump(MSG_MSGDUMP, "FT: MDE",
parse.mdie - 2, parse.mdie_len + 2);
wpa_hexdump(MSG_MSGDUMP, "FT: FTE",
parse.ftie - 2, parse.ftie_len + 2);
wpa_hexdump(MSG_MSGDUMP, "FT: RSN",
parse.rsn - 2, parse.rsn_len + 2);
wpa_hexdump(MSG_MSGDUMP, "FT: RSNXE",
parse.rsnxe ? parse.rsnxe - 2 : NULL,
parse.rsnxe ? parse.rsnxe_len + 2 : 0);
return;
}
add_note(wt, MSG_INFO, "FT: Valid FTE MIC");
if (wpa_compare_rsn_ie(wpa_key_mgmt_ft(sta->key_mgmt),
bss->rsnie, 2 + bss->rsnie[1],
parse.rsn - 2, parse.rsn_len + 2)) {
add_note(wt, MSG_INFO,
"FT: RSNE mismatch between Beacon/ProbeResp and FT protocol Reassociation Response frame");
wpa_hexdump(MSG_INFO, "RSNE in Beacon/ProbeResp",
&bss->rsnie[2], bss->rsnie[1]);
wpa_hexdump(MSG_INFO,
"RSNE in FT protocol Reassociation Response frame",
parse.rsn ? parse.rsn - 2 : NULL,
parse.rsn ? parse.rsn_len + 2 : 0);
}
process_gtk_subelem(wt, bss, sta, kek, kek_len,
parse.gtk, parse.gtk_len);
process_igtk_subelem(wt, bss, sta, kek, kek_len,
parse.igtk, parse.igtk_len);
process_bigtk_subelem(wt, bss, sta, kek, kek_len,
parse.bigtk, parse.bigtk_len);
}
}
static void disassoc_all_stas(struct wlantest *wt, struct wlantest_bss *bss)
{
struct wlantest_sta *sta;
dl_list_for_each(sta, &bss->sta, struct wlantest_sta, list) {
if (sta->state <= STATE2)
continue;
add_note(wt, MSG_DEBUG, "STA " MACSTR
" moved to State 2 with " MACSTR,
MAC2STR(sta->addr), MAC2STR(bss->bssid));
sta->state = STATE2;
}
}
static void rx_mgmt_disassoc(struct wlantest *wt, const u8 *data, size_t len,
int valid)
{
const struct ieee80211_mgmt *mgmt;
struct wlantest_bss *bss;
struct wlantest_sta *sta;
u16 fc, reason;
mgmt = (const struct ieee80211_mgmt *) data;
bss = bss_get(wt, mgmt->bssid);
if (bss == NULL)
return;
if (os_memcmp(mgmt->sa, mgmt->bssid, ETH_ALEN) == 0)
sta = sta_get(bss, mgmt->da);
else
sta = sta_get(bss, mgmt->sa);
if (len < 24 + 2) {
add_note(wt, MSG_INFO, "Too short Disassociation frame from "
MACSTR, MAC2STR(mgmt->sa));
return;
}
reason = le_to_host16(mgmt->u.disassoc.reason_code);
wpa_printf(MSG_DEBUG, "DISASSOC " MACSTR " -> " MACSTR
" (reason=%u) (valid=%d)",
MAC2STR(mgmt->sa), MAC2STR(mgmt->da),
reason, valid);
wpa_hexdump(MSG_MSGDUMP, "DISASSOC payload", data + 24, len - 24);
if (sta == NULL) {
if (valid && mgmt->da[0] == 0xff)
disassoc_all_stas(wt, bss);
return;
}
if (os_memcmp(mgmt->sa, mgmt->bssid, ETH_ALEN) == 0) {
sta->counters[valid ? WLANTEST_STA_COUNTER_VALID_DISASSOC_RX :
WLANTEST_STA_COUNTER_INVALID_DISASSOC_RX]++;
if (sta->pwrmgt && !sta->pspoll)
sta->counters[
WLANTEST_STA_COUNTER_DISASSOC_RX_ASLEEP]++;
else
sta->counters[
WLANTEST_STA_COUNTER_DISASSOC_RX_AWAKE]++;
fc = le_to_host16(mgmt->frame_control);
if (!(fc & WLAN_FC_ISWEP) && reason == 6)
sta->counters[WLANTEST_STA_COUNTER_DISASSOC_RX_RC6]++;
else if (!(fc & WLAN_FC_ISWEP) && reason == 7)
sta->counters[WLANTEST_STA_COUNTER_DISASSOC_RX_RC7]++;
} else
sta->counters[valid ? WLANTEST_STA_COUNTER_VALID_DISASSOC_TX :
WLANTEST_STA_COUNTER_INVALID_DISASSOC_TX]++;
if (!valid) {
add_note(wt, MSG_INFO, "Do not change STA " MACSTR " State "
"since Disassociation frame was not protected "
"correctly", MAC2STR(sta->addr));
return;
}
if (sta->state < STATE2) {
add_note(wt, MSG_DEBUG,
"STA " MACSTR " was not in State 2 or 3 "
"when getting disassociated", MAC2STR(sta->addr));
}
if (sta->state > STATE2) {
add_note(wt, MSG_DEBUG, "STA " MACSTR
" moved to State 2 with " MACSTR,
MAC2STR(sta->addr), MAC2STR(bss->bssid));
sta->state = STATE2;
}
tdls_link_down(wt, bss, sta);
}
static void rx_mgmt_action_ft_request(struct wlantest *wt,
const struct ieee80211_mgmt *mgmt,
size_t len)
{
const u8 *ies;
size_t ies_len;
struct wpa_ft_ies parse;
struct wlantest_bss *bss;
struct wlantest_sta *sta;
if (len < 24 + 2 + 2 * ETH_ALEN) {
add_note(wt, MSG_INFO, "Too short FT Request frame");
return;
}
wpa_printf(MSG_DEBUG, "FT Request: STA Address: " MACSTR
" Target AP Address: " MACSTR,
MAC2STR(mgmt->u.action.u.ft_action_req.sta_addr),
MAC2STR(mgmt->u.action.u.ft_action_req.target_ap_addr));
ies = mgmt->u.action.u.ft_action_req.variable;
ies_len = len - (24 + 2 + 2 * ETH_ALEN);
wpa_hexdump(MSG_DEBUG, "FT Request frame body", ies, ies_len);
if (wpa_ft_parse_ies(ies, ies_len, &parse, 0)) {
add_note(wt, MSG_INFO, "Could not parse FT Request frame body");
return;
}
bss = bss_get(wt, mgmt->u.action.u.ft_action_resp.target_ap_addr);
if (!bss) {
add_note(wt, MSG_INFO, "No BSS entry for Target AP");
return;
}
sta = sta_get(bss, mgmt->sa);
if (!sta)
return;
sta->ft_over_ds = true;
sta->key_mgmt = parse.key_mgmt;
sta->pairwise_cipher = parse.pairwise_cipher;
}
static void rx_mgmt_action_ft_response(struct wlantest *wt,
struct wlantest_sta *sta,
const struct ieee80211_mgmt *mgmt,
size_t len)
{
struct wlantest_bss *bss;
struct wlantest_sta *new_sta;
const u8 *ies;
size_t ies_len;
struct wpa_ft_ies parse;
struct wpa_ptk ptk;
u8 ptk_name[WPA_PMK_NAME_LEN];
if (len < 24 + 2 + 2 * ETH_ALEN + 2) {
add_note(wt, MSG_INFO, "Too short FT Response frame from "
MACSTR, MAC2STR(mgmt->sa));
return;
}
wpa_printf(MSG_DEBUG, "FT Response: STA Address: " MACSTR
" Target AP Address: " MACSTR " Status Code: %u",
MAC2STR(mgmt->u.action.u.ft_action_resp.sta_addr),
MAC2STR(mgmt->u.action.u.ft_action_resp.target_ap_addr),
le_to_host16(mgmt->u.action.u.ft_action_resp.status_code));
ies = mgmt->u.action.u.ft_action_req.variable;
ies_len = len - (24 + 2 + 2 * ETH_ALEN);
wpa_hexdump(MSG_DEBUG, "FT Response frame body", ies, ies_len);
if (wpa_ft_parse_ies(ies, ies_len, &parse, 0)) {
add_note(wt, MSG_INFO,
"Could not parse FT Response frame body");
return;
}
bss = bss_get(wt, mgmt->u.action.u.ft_action_resp.target_ap_addr);
if (!bss) {
add_note(wt, MSG_INFO, "No BSS entry for Target AP");
return;
}
if (parse.r1kh_id)
os_memcpy(bss->r1kh_id, parse.r1kh_id, FT_R1KH_ID_LEN);
if (wpa_derive_pmk_r1(sta->pmk_r0, sta->pmk_r0_len, sta->pmk_r0_name,
bss->r1kh_id, sta->addr, sta->pmk_r1,
sta->pmk_r1_name) < 0)
return;
sta->pmk_r1_len = sta->pmk_r0_len;
new_sta = sta_get(bss, sta->addr);
if (!new_sta)
return;
os_memcpy(new_sta->pmk_r0, sta->pmk_r0, sta->pmk_r0_len);
new_sta->pmk_r0_len = sta->pmk_r0_len;
os_memcpy(new_sta->pmk_r0_name, sta->pmk_r0_name,
sizeof(sta->pmk_r0_name));
os_memcpy(new_sta->pmk_r1, sta->pmk_r1, sta->pmk_r1_len);
new_sta->pmk_r1_len = sta->pmk_r1_len;
os_memcpy(new_sta->pmk_r1_name, sta->pmk_r1_name,
sizeof(sta->pmk_r1_name));
if (!parse.fte_anonce || !parse.fte_snonce ||
wpa_pmk_r1_to_ptk(sta->pmk_r1, sta->pmk_r1_len, parse.fte_snonce,
parse.fte_anonce, new_sta->addr, bss->bssid,
sta->pmk_r1_name, &ptk, ptk_name,
new_sta->key_mgmt, new_sta->pairwise_cipher,
0) < 0)
return;
sta_new_ptk(wt, new_sta, &ptk);
os_memcpy(new_sta->snonce, parse.fte_snonce, WPA_NONCE_LEN);
os_memcpy(new_sta->anonce, parse.fte_anonce, WPA_NONCE_LEN);
}
static void rx_mgmt_action_ft(struct wlantest *wt, struct wlantest_sta *sta,
const struct ieee80211_mgmt *mgmt,
size_t len, int valid)
{
if (len < 24 + 2) {
add_note(wt, MSG_INFO, "Too short FT Action frame from " MACSTR,
MAC2STR(mgmt->sa));
return;
}
switch (mgmt->u.action.u.ft_action_req.action) {
case 1:
rx_mgmt_action_ft_request(wt, mgmt, len);
break;
case 2:
rx_mgmt_action_ft_response(wt, sta, mgmt, len);
break;
default:
add_note(wt, MSG_INFO, "Unsupported FT action value %u from "
MACSTR, mgmt->u.action.u.ft_action_req.action,
MAC2STR(mgmt->sa));
}
}
static void rx_mgmt_action_sa_query_req(struct wlantest *wt,
struct wlantest_sta *sta,
const struct ieee80211_mgmt *mgmt,
size_t len, int valid)
{
const u8 *rx_id;
u8 *id;
rx_id = (const u8 *) mgmt->u.action.u.sa_query_req.trans_id;
if (os_memcmp(mgmt->sa, mgmt->bssid, ETH_ALEN) == 0)
id = sta->ap_sa_query_tr;
else
id = sta->sta_sa_query_tr;
add_note(wt, MSG_INFO, "SA Query Request " MACSTR " -> " MACSTR
" (trans_id=%02x%02x)%s",
MAC2STR(mgmt->sa), MAC2STR(mgmt->da), rx_id[0], rx_id[1],
valid ? "" : " (invalid protection)");
os_memcpy(id, mgmt->u.action.u.sa_query_req.trans_id, 2);
if (os_memcmp(mgmt->sa, sta->addr, ETH_ALEN) == 0)
sta->counters[valid ?
WLANTEST_STA_COUNTER_VALID_SAQUERYREQ_TX :
WLANTEST_STA_COUNTER_INVALID_SAQUERYREQ_TX]++;
else
sta->counters[valid ?
WLANTEST_STA_COUNTER_VALID_SAQUERYREQ_RX :
WLANTEST_STA_COUNTER_INVALID_SAQUERYREQ_RX]++;
}
static void rx_mgmt_action_sa_query_resp(struct wlantest *wt,
struct wlantest_sta *sta,
const struct ieee80211_mgmt *mgmt,
size_t len, int valid)
{
const u8 *rx_id;
u8 *id;
int match;
rx_id = (const u8 *) mgmt->u.action.u.sa_query_resp.trans_id;
if (os_memcmp(mgmt->sa, mgmt->bssid, ETH_ALEN) == 0)
id = sta->sta_sa_query_tr;
else
id = sta->ap_sa_query_tr;
match = os_memcmp(rx_id, id, 2) == 0;
add_note(wt, MSG_INFO, "SA Query Response " MACSTR " -> " MACSTR
" (trans_id=%02x%02x; %s)%s",
MAC2STR(mgmt->sa), MAC2STR(mgmt->da), rx_id[0], rx_id[1],
match ? "match" : "mismatch",
valid ? "" : " (invalid protection)");
if (os_memcmp(mgmt->sa, sta->addr, ETH_ALEN) == 0)
sta->counters[(valid && match) ?
WLANTEST_STA_COUNTER_VALID_SAQUERYRESP_TX :
WLANTEST_STA_COUNTER_INVALID_SAQUERYRESP_TX]++;
else
sta->counters[(valid && match) ?
WLANTEST_STA_COUNTER_VALID_SAQUERYRESP_RX :
WLANTEST_STA_COUNTER_INVALID_SAQUERYRESP_RX]++;
}
static void rx_mgmt_action_sa_query(struct wlantest *wt,
struct wlantest_sta *sta,
const struct ieee80211_mgmt *mgmt,
size_t len, int valid)
{
if (len < 24 + 2 + WLAN_SA_QUERY_TR_ID_LEN) {
add_note(wt, MSG_INFO, "Too short SA Query frame from " MACSTR,
MAC2STR(mgmt->sa));
return;
}
if (len > 24 + 2 + WLAN_SA_QUERY_TR_ID_LEN) {
size_t elen = len - (24 + 2 + WLAN_SA_QUERY_TR_ID_LEN);
add_note(wt, MSG_INFO, "Unexpected %u octets of extra data at "
"the end of SA Query frame from " MACSTR,
(unsigned) elen, MAC2STR(mgmt->sa));
wpa_hexdump(MSG_INFO, "SA Query extra data",
((const u8 *) mgmt) + len - elen, elen);
}
switch (mgmt->u.action.u.sa_query_req.action) {
case WLAN_SA_QUERY_REQUEST:
rx_mgmt_action_sa_query_req(wt, sta, mgmt, len, valid);
break;
case WLAN_SA_QUERY_RESPONSE:
rx_mgmt_action_sa_query_resp(wt, sta, mgmt, len, valid);
break;
default:
add_note(wt, MSG_INFO, "Unexpected SA Query action value %u "
"from " MACSTR,
mgmt->u.action.u.sa_query_req.action,
MAC2STR(mgmt->sa));
}
}
static void
rx_mgmt_location_measurement_report(struct wlantest *wt,
const struct ieee80211_mgmt *mgmt,
size_t len, bool no_ack)
{
const u8 *pos = mgmt->u.action.u.public_action.variable;
const u8 *end = ((const u8 *) mgmt) + len;
if (end - pos < 1) {
add_note(wt, MSG_INFO,
"Too short Location Measurement Report frame from "
MACSTR, MAC2STR(mgmt->sa));
return;
}
wpa_printf(MSG_DEBUG, "Location Measurement Report " MACSTR " --> "
MACSTR " (dialog token %u)",
MAC2STR(mgmt->sa), MAC2STR(mgmt->da), *pos);
pos++;
if (!no_ack)
add_note(wt, MSG_INFO,
"Protected Fine Timing Measurement Report incorrectly as an Action frame from "
MACSTR, MAC2STR(mgmt->sa));
wpa_hexdump(MSG_MSGDUMP, "Location Measurement Report contents",
pos, end - pos);
}
static void rx_mgmt_action_no_bss_public(struct wlantest *wt,
const struct ieee80211_mgmt *mgmt,
size_t len, bool no_ack)
{
switch (mgmt->u.action.u.public_action.action) {
case WLAN_PA_LOCATION_MEASUREMENT_REPORT:
rx_mgmt_location_measurement_report(wt, mgmt, len, no_ack);
break;
}
}
static void rx_mgmt_prot_ftm_request(struct wlantest *wt,
const struct ieee80211_mgmt *mgmt,
size_t len, bool no_ack)
{
wpa_printf(MSG_DEBUG, "Protected Fine Timing Measurement Request "
MACSTR " --> " MACSTR,
MAC2STR(mgmt->sa), MAC2STR(mgmt->da));
if (no_ack)
add_note(wt, MSG_INFO,
"Protected Fine Timing Measurement Request incorrectly as an Action No Ack frame from "
MACSTR, MAC2STR(mgmt->sa));
}
static void rx_mgmt_prot_ftm(struct wlantest *wt,
const struct ieee80211_mgmt *mgmt,
size_t len, bool no_ack)
{
wpa_printf(MSG_DEBUG, "Protected Fine Timing Measurement "
MACSTR " --> " MACSTR,
MAC2STR(mgmt->sa), MAC2STR(mgmt->da));
if (no_ack)
add_note(wt, MSG_INFO,
"Protected Fine Timing Measurement incorrectly as an Action No Ack frame from "
MACSTR, MAC2STR(mgmt->sa));
}
static void rx_mgmt_prot_ftm_report(struct wlantest *wt,
const struct ieee80211_mgmt *mgmt,
size_t len, bool no_ack)
{
wpa_printf(MSG_DEBUG, "Protected Fine Timing Measurement Report "
MACSTR " --> " MACSTR,
MAC2STR(mgmt->sa), MAC2STR(mgmt->da));
if (!no_ack)
add_note(wt, MSG_INFO,
"Protected Fine Timing Measurement Report incorrectly as an Action frame from "
MACSTR, MAC2STR(mgmt->sa));
}
static void
rx_mgmt_action_no_bss_protected_ftm(struct wlantest *wt,
const struct ieee80211_mgmt *mgmt,
size_t len, bool no_ack)
{
switch (mgmt->u.action.u.public_action.action) {
case WLAN_PROT_FTM_REQUEST:
rx_mgmt_prot_ftm_request(wt, mgmt, len, no_ack);
break;
case WLAN_PROT_FTM:
rx_mgmt_prot_ftm(wt, mgmt, len, no_ack);
break;
case WLAN_PROT_FTM_REPORT:
rx_mgmt_prot_ftm_report(wt, mgmt, len, no_ack);
break;
}
}
static void rx_mgmt_action_no_bss(struct wlantest *wt,
const struct ieee80211_mgmt *mgmt, size_t len,
bool no_ack)
{
switch (mgmt->u.action.category) {
case WLAN_ACTION_PUBLIC:
rx_mgmt_action_no_bss_public(wt, mgmt, len, no_ack);
break;
case WLAN_ACTION_PROTECTED_FTM:
rx_mgmt_action_no_bss_protected_ftm(wt, mgmt, len, no_ack);
break;
}
}
static void rx_mgmt_action(struct wlantest *wt, const u8 *data, size_t len,
int valid, bool no_ack)
{
const struct ieee80211_mgmt *mgmt;
struct wlantest_bss *bss;
struct wlantest_sta *sta;
mgmt = (const struct ieee80211_mgmt *) data;
if (mgmt->da[0] & 0x01) {
add_note(wt, MSG_DEBUG, "Group addressed Action frame: DA="
MACSTR " SA=" MACSTR " BSSID=" MACSTR
" category=%u",
MAC2STR(mgmt->da), MAC2STR(mgmt->sa),
MAC2STR(mgmt->bssid), mgmt->u.action.category);
return; /* Ignore group addressed Action frames for now */
}
if (len < 24 + 2) {
add_note(wt, MSG_INFO, "Too short Action frame from " MACSTR,
MAC2STR(mgmt->sa));
return;
}
wpa_printf(MSG_DEBUG, "ACTION%s " MACSTR " -> " MACSTR
" BSSID=" MACSTR " (category=%u) (valid=%d)",
no_ack ? "-NO-ACK" : "",
MAC2STR(mgmt->sa), MAC2STR(mgmt->da), MAC2STR(mgmt->bssid),
mgmt->u.action.category, valid);
wpa_hexdump(MSG_MSGDUMP, "ACTION payload", data + 24, len - 24);
if (is_broadcast_ether_addr(mgmt->bssid)) {
rx_mgmt_action_no_bss(wt, mgmt, len, no_ack);
return;
}
bss = bss_get(wt, mgmt->bssid);
if (bss == NULL)
return;
if (os_memcmp(mgmt->sa, mgmt->bssid, ETH_ALEN) == 0) {
sta = sta_find_mlo(wt, bss, mgmt->da);
if (!sta)
sta = sta_get(bss, mgmt->da);
} else {
sta = sta_find_mlo(wt, bss, mgmt->sa);
if (!sta)
sta = sta_get(bss, mgmt->sa);
}
if (sta == NULL)
return;
if (mgmt->u.action.category != WLAN_ACTION_PUBLIC &&
sta->state < STATE3) {
add_note(wt, MSG_INFO, "Action frame sent when STA is not in "
"State 3 (SA=" MACSTR " DATA=" MACSTR ")",
MAC2STR(mgmt->sa), MAC2STR(mgmt->da));
}
switch (mgmt->u.action.category) {
case WLAN_ACTION_FT:
rx_mgmt_action_ft(wt, sta, mgmt, len, valid);
break;
case WLAN_ACTION_SA_QUERY:
rx_mgmt_action_sa_query(wt, sta, mgmt, len, valid);
break;
}
}
static int check_mmie_mic(unsigned int mgmt_group_cipher,
const u8 *igtk, size_t igtk_len,
const u8 *data, size_t len)
{
u8 *buf;
u8 mic[16];
u16 fc;
const struct ieee80211_hdr *hdr;
int ret, mic_len;
if (!mgmt_group_cipher || igtk_len < 16)
return -1;
mic_len = mgmt_group_cipher == WPA_CIPHER_AES_128_CMAC ? 8 : 16;
if (len < 24 || len - 24 < mic_len)
return -1;
buf = os_malloc(len + 20 - 24);
if (buf == NULL)
return -1;
/* BIP AAD: FC(masked) A1 A2 A3 */
hdr = (const struct ieee80211_hdr *) data;
fc = le_to_host16(hdr->frame_control);
fc &= ~(WLAN_FC_RETRY | WLAN_FC_PWRMGT | WLAN_FC_MOREDATA);
WPA_PUT_LE16(buf, fc);
os_memcpy(buf + 2, hdr->addr1, 3 * ETH_ALEN);
/* Frame body with MMIE MIC masked to zero */
os_memcpy(buf + 20, data + 24, len - 24 - mic_len);
os_memset(buf + 20 + len - 24 - mic_len, 0, mic_len);
if (WLAN_FC_GET_STYPE(fc) == WLAN_FC_STYPE_BEACON) {
/* Timestamp field masked to zero */
os_memset(buf + 20, 0, 8);
}
wpa_hexdump(MSG_MSGDUMP, "BIP: AAD|Body(masked)", buf, len + 20 - 24);
/* MIC = L(AES-128-CMAC(AAD || Frame Body(masked)), 0, 64) */
if (mgmt_group_cipher == WPA_CIPHER_AES_128_CMAC) {
ret = omac1_aes_128(igtk, buf, len + 20 - 24, mic);
} else if (mgmt_group_cipher == WPA_CIPHER_BIP_CMAC_256) {
ret = omac1_aes_256(igtk, buf, len + 20 - 24, mic);
} else if (mgmt_group_cipher == WPA_CIPHER_BIP_GMAC_128 ||
mgmt_group_cipher == WPA_CIPHER_BIP_GMAC_256) {
u8 nonce[12], *npos;
const u8 *ipn;
ipn = data + len - mic_len - 6;
/* Nonce: A2 | IPN */
os_memcpy(nonce, hdr->addr2, ETH_ALEN);
npos = nonce + ETH_ALEN;
*npos++ = ipn[5];
*npos++ = ipn[4];
*npos++ = ipn[3];
*npos++ = ipn[2];
*npos++ = ipn[1];
*npos++ = ipn[0];
ret = aes_gmac(igtk, igtk_len, nonce, sizeof(nonce),
buf, len + 20 - 24, mic);
} else {
ret = -1;
}
if (ret < 0) {
os_free(buf);
return -1;
}
os_free(buf);
if (os_memcmp(data + len - mic_len, mic, mic_len) != 0)
return -1;
return 0;
}
static int check_bip(struct wlantest *wt, const u8 *data, size_t len)
{
const struct ieee80211_mgmt *mgmt;
u16 fc, stype;
const u8 *mmie;
u16 keyid;
struct wlantest_bss *bss;
size_t mic_len;
mgmt = (const struct ieee80211_mgmt *) data;
fc = le_to_host16(mgmt->frame_control);
stype = WLAN_FC_GET_STYPE(fc);
if (stype == WLAN_FC_STYPE_ACTION ||
stype == WLAN_FC_STYPE_ACTION_NO_ACK) {
if (len < 24 + 1)
return 0;
if (mgmt->u.action.category == WLAN_ACTION_PUBLIC)
return 0; /* Not a robust management frame */
}
bss = bss_get(wt, mgmt->bssid);
if (bss == NULL)
return 0; /* No key known yet */
mic_len = bss->mgmt_group_cipher == WPA_CIPHER_AES_128_CMAC ? 8 : 16;
if (len < 24 + 10 + mic_len ||
data[len - (10 + mic_len)] != WLAN_EID_MMIE ||
data[len - (10 + mic_len - 1)] != 8 + mic_len) {
/* No MMIE */
if (bss->rsn_capab & WPA_CAPABILITY_MFPC) {
add_note(wt, MSG_INFO, "Robust group-addressed "
"management frame sent without BIP by "
MACSTR, MAC2STR(mgmt->sa));
bss->counters[WLANTEST_BSS_COUNTER_MISSING_BIP_MMIE]++;
return -1;
}
return 0;
}
mmie = data + len - (8 + mic_len);
keyid = WPA_GET_LE16(mmie);
if (keyid & 0xf000) {
add_note(wt, MSG_INFO, "MMIE KeyID reserved bits not zero "
"(%04x) from " MACSTR, keyid, MAC2STR(mgmt->sa));
keyid &= 0x0fff;
}
if (keyid < 4 || keyid > 5) {
add_note(wt, MSG_INFO, "Unexpected MMIE KeyID %u from " MACSTR,
keyid, MAC2STR(mgmt->sa));
bss->counters[WLANTEST_BSS_COUNTER_INVALID_BIP_MMIE]++;
return 0;
}
wpa_printf(MSG_DEBUG, "MMIE KeyID %u", keyid);
wpa_hexdump(MSG_MSGDUMP, "MMIE IPN", mmie + 2, 6);
wpa_hexdump(MSG_MSGDUMP, "MMIE MIC", mmie + 8, mic_len);
if (!bss->igtk_len[keyid]) {
add_note(wt, MSG_DEBUG, "No IGTK known to validate BIP frame");
return 0;
}
if (os_memcmp(mmie + 2, bss->ipn[keyid], 6) <= 0) {
add_note(wt, MSG_INFO, "BIP replay detected: SA=" MACSTR,
MAC2STR(mgmt->sa));
wpa_hexdump(MSG_INFO, "RX IPN", mmie + 2, 6);
wpa_hexdump(MSG_INFO, "Last RX IPN", bss->ipn[keyid], 6);
}
if (check_mmie_mic(bss->mgmt_group_cipher, bss->igtk[keyid],
bss->igtk_len[keyid], data, len) < 0) {
add_note(wt, MSG_INFO, "Invalid MMIE MIC in a frame from "
MACSTR, MAC2STR(mgmt->sa));
bss->counters[WLANTEST_BSS_COUNTER_INVALID_BIP_MMIE]++;
return -1;
}
add_note(wt, MSG_DEBUG, "Valid MMIE MIC");
os_memcpy(bss->ipn[keyid], mmie + 2, 6);
bss->counters[WLANTEST_BSS_COUNTER_VALID_BIP_MMIE]++;
if (stype == WLAN_FC_STYPE_DEAUTH)
bss->counters[WLANTEST_BSS_COUNTER_BIP_DEAUTH]++;
else if (stype == WLAN_FC_STYPE_DISASSOC)
bss->counters[WLANTEST_BSS_COUNTER_BIP_DISASSOC]++;
return 0;
}
static u8 * try_tk(struct wpa_ptk *ptk, size_t ptk_len,
const u8 *data, size_t len, size_t *dlen)
{
const struct ieee80211_hdr *hdr;
u8 *decrypted, *frame;
hdr = (const struct ieee80211_hdr *) data;
if (ptk_len == 16) {
decrypted = ccmp_decrypt(ptk->tk, hdr, NULL, NULL, NULL,
data + 24, len - 24, dlen);
if (!decrypted)
decrypted = gcmp_decrypt(ptk->tk, 16, hdr, NULL, NULL,
NULL,
data + 24, len - 24, dlen);
} else if (ptk_len == 32) {
decrypted = ccmp_256_decrypt(ptk->tk, hdr, NULL, NULL, NULL,
data + 24, len - 24, dlen);
if (!decrypted)
decrypted = gcmp_decrypt(ptk->tk, 32, hdr, NULL, NULL,
NULL,
data + 24, len - 24, dlen);
} else {
decrypted = NULL;
}
if (!decrypted)
return NULL;
frame = os_malloc(24 + *dlen);
if (frame) {
os_memcpy(frame, data, 24);
os_memcpy(frame + 24, decrypted, *dlen);
*dlen += 24;
}
os_free(decrypted);
return frame;
}
static u8 * mgmt_decrypt_tk(struct wlantest *wt, const u8 *data, size_t len,
size_t *dlen)
{
struct wlantest_ptk *ptk;
u8 *decrypted;
int prev_level = wpa_debug_level;
int keyid;
keyid = data[24 + 3] >> 6;
wpa_debug_level = MSG_WARNING;
dl_list_for_each(ptk, &wt->ptk, struct wlantest_ptk, list) {
decrypted = try_tk(&ptk->ptk, ptk->ptk_len, data, len, dlen);
if (decrypted) {
wpa_debug_level = prev_level;
add_note(wt, MSG_DEBUG,
"Found TK match from the list of all known TKs");
write_decrypted_note(wt, decrypted, ptk->ptk.tk,
ptk->ptk.tk_len, keyid);
return decrypted;
}
}
wpa_debug_level = prev_level;
return NULL;
}
static u8 * mgmt_decrypt(struct wlantest *wt, const u8 *data, size_t len,
size_t *dlen)
{
struct wlantest_bss *bss;
struct wlantest_sta *sta;
const struct ieee80211_hdr *hdr;
int keyid;
u8 *decrypted, *frame = NULL;
u8 pn[6], *rsc;
u16 fc;
u8 mask;
size_t hdrlen = 24;
hdr = (const struct ieee80211_hdr *) data;
fc = le_to_host16(hdr->frame_control);
if (fc & WLAN_FC_HTC)
hdrlen += 4; /* HT Control field */
if (len < hdrlen + 4)
return NULL;
if (!(data[hdrlen + 3] & 0x20)) {
add_note(wt, MSG_INFO, "Expected CCMP/GCMP frame from " MACSTR
" did not have ExtIV bit set to 1",
MAC2STR(hdr->addr2));
return NULL;
}
mask = 0x1f;
if (WLAN_FC_GET_STYPE(fc) == WLAN_FC_STYPE_ACTION ||
WLAN_FC_GET_STYPE(fc) == WLAN_FC_STYPE_ACTION_NO_ACK)
mask &= ~0x10; /* FTM */
if (data[hdrlen + 2] != 0 || (data[hdrlen + 3] & mask) != 0) {
add_note(wt, MSG_INFO, "CCMP/GCMP mgmt frame from " MACSTR
" used non-zero reserved bit", MAC2STR(hdr->addr2));
}
keyid = data[hdrlen + 3] >> 6;
if (keyid != 0) {
add_note(wt, MSG_INFO, "Unexpected non-zero KeyID %d in "
"individually addressed Management frame from "
MACSTR, keyid, MAC2STR(hdr->addr2));
}
bss = bss_get(wt, hdr->addr3);
if (bss == NULL)
return mgmt_decrypt_tk(wt, data, len, dlen);
if (os_memcmp(hdr->addr1, hdr->addr3, ETH_ALEN) == 0) {
sta = sta_find_mlo(wt, bss, hdr->addr2);
if (!sta)
sta = sta_get(bss, hdr->addr2);
} else {
sta = sta_find_mlo(wt, bss, hdr->addr1);
if (!sta)
sta = sta_get(bss, hdr->addr1);
}
if (sta == NULL || !sta->ptk_set) {
decrypted = mgmt_decrypt_tk(wt, data, len, dlen);
if (!decrypted)
add_note(wt, MSG_MSGDUMP,
"No PTK known to decrypt the frame");
return decrypted;
}
if (os_memcmp(hdr->addr1, hdr->addr3, ETH_ALEN) == 0)
rsc = sta->rsc_tods[16];
else
rsc = sta->rsc_fromds[16];
ccmp_get_pn(pn, data + hdrlen);
if (os_memcmp(pn, rsc, 6) <= 0) {
u16 seq_ctrl = le_to_host16(hdr->seq_ctrl);
add_note(wt, MSG_INFO, "replay detected: A1=" MACSTR
" A2=" MACSTR " A3=" MACSTR " seq=%u frag=%u%s",
MAC2STR(hdr->addr1), MAC2STR(hdr->addr2),
MAC2STR(hdr->addr3),
WLAN_GET_SEQ_SEQ(seq_ctrl),
WLAN_GET_SEQ_FRAG(seq_ctrl),
(le_to_host16(hdr->frame_control) & WLAN_FC_RETRY) ?
" Retry" : "");
wpa_hexdump(MSG_INFO, "RX PN", pn, 6);
wpa_hexdump(MSG_INFO, "RSC", rsc, 6);
}
if (sta->pairwise_cipher == WPA_CIPHER_CCMP_256) {
decrypted = ccmp_256_decrypt(sta->ptk.tk, hdr, NULL, NULL, NULL,
data + hdrlen, len - hdrlen, dlen);
write_decrypted_note(wt, decrypted, sta->ptk.tk, 32, keyid);
} else if (sta->pairwise_cipher == WPA_CIPHER_GCMP ||
sta->pairwise_cipher == WPA_CIPHER_GCMP_256) {
decrypted = gcmp_decrypt(sta->ptk.tk, sta->ptk.tk_len, hdr,
NULL, NULL, NULL,
data + hdrlen, len - hdrlen, dlen);
write_decrypted_note(wt, decrypted, sta->ptk.tk,
sta->ptk.tk_len, keyid);
} else {
decrypted = ccmp_decrypt(sta->ptk.tk, hdr, NULL, NULL, NULL,
data + hdrlen, len - hdrlen, dlen);
write_decrypted_note(wt, decrypted, sta->ptk.tk, 16, keyid);
}
if (decrypted) {
os_memcpy(rsc, pn, 6);
frame = os_malloc(hdrlen + *dlen);
if (frame) {
os_memcpy(frame, data, hdrlen);
os_memcpy(frame + hdrlen, decrypted, *dlen);
*dlen += hdrlen;
}
} else {
/* Assume the frame was corrupted and there was no FCS to check.
* Allow retry of this particular frame to be processed so that
* it could end up getting decrypted if it was received without
* corruption. */
sta->allow_duplicate = 1;
}
os_free(decrypted);
return frame;
}
static bool is_robust_action_category(u8 category)
{
return category != WLAN_ACTION_PUBLIC &&
category != WLAN_ACTION_HT &&
category != WLAN_ACTION_UNPROTECTED_WNM &&
category != WLAN_ACTION_SELF_PROTECTED &&
category != WLAN_ACTION_UNPROTECTED_DMG &&
category != WLAN_ACTION_VHT &&
category != WLAN_ACTION_UNPROTECTED_S1G &&
category != WLAN_ACTION_HE &&
category != WLAN_ACTION_EHT &&
category != WLAN_ACTION_VENDOR_SPECIFIC;
}
static int check_mgmt_ccmp_gcmp(struct wlantest *wt, const u8 *data, size_t len)
{
const struct ieee80211_mgmt *mgmt;
u16 fc;
struct wlantest_bss *bss;
struct wlantest_sta *sta;
int category = -1;
mgmt = (const struct ieee80211_mgmt *) data;
fc = le_to_host16(mgmt->frame_control);
if ((WLAN_FC_GET_STYPE(fc) == WLAN_FC_STYPE_ACTION ||
WLAN_FC_GET_STYPE(fc) == WLAN_FC_STYPE_ACTION_NO_ACK) &&
len > 24) {
category = mgmt->u.action.category;
if (!is_robust_action_category(category))
return 0; /* Not a robust management frame */
}
bss = bss_get(wt, mgmt->bssid);
if (bss == NULL)
return 0;
if (os_memcmp(mgmt->da, mgmt->bssid, ETH_ALEN) == 0)
sta = sta_get(bss, mgmt->sa);
else
sta = sta_get(bss, mgmt->da);
if (sta == NULL)
return 0;
if ((bss->rsn_capab & WPA_CAPABILITY_MFPC) &&
(sta->rsn_capab & WPA_CAPABILITY_MFPC) &&
(sta->state == STATE3 ||
WLAN_FC_GET_STYPE(fc) == WLAN_FC_STYPE_ACTION ||
WLAN_FC_GET_STYPE(fc) == WLAN_FC_STYPE_ACTION_NO_ACK)) {
add_note(wt, MSG_INFO,
"Robust individually-addressed management frame (stype=%u category=%d) sent without CCMP/GCMP by "
MACSTR, WLAN_FC_GET_STYPE(fc), category,
MAC2STR(mgmt->sa));
return -1;
}
return 0;
}
void rx_mgmt(struct wlantest *wt, const u8 *data, size_t len)
{
const struct ieee80211_hdr *hdr;
u16 fc, stype;
int valid = 1;
u8 *decrypted = NULL;
size_t dlen;
if (len < 24)
return;
hdr = (const struct ieee80211_hdr *) data;
fc = le_to_host16(hdr->frame_control);
wt->rx_mgmt++;
stype = WLAN_FC_GET_STYPE(fc);
if ((hdr->addr1[0] & 0x01) &&
(stype == WLAN_FC_STYPE_DEAUTH ||
stype == WLAN_FC_STYPE_DISASSOC ||
stype == WLAN_FC_STYPE_ACTION ||
stype == WLAN_FC_STYPE_ACTION_NO_ACK)) {
if (check_bip(wt, data, len) < 0)
valid = 0;
}
wpa_printf((stype == WLAN_FC_STYPE_BEACON ||
stype == WLAN_FC_STYPE_PROBE_RESP ||
stype == WLAN_FC_STYPE_PROBE_REQ) ?
MSG_EXCESSIVE : MSG_MSGDUMP,
"MGMT %s%s%s DA=" MACSTR " SA=" MACSTR " BSSID=" MACSTR,
mgmt_stype(stype),
fc & WLAN_FC_PWRMGT ? " PwrMgt" : "",
fc & WLAN_FC_ISWEP ? " Prot" : "",
MAC2STR(hdr->addr1), MAC2STR(hdr->addr2),
MAC2STR(hdr->addr3));
if ((fc & WLAN_FC_ISWEP) &&
!(hdr->addr1[0] & 0x01) &&
(stype == WLAN_FC_STYPE_DEAUTH ||
stype == WLAN_FC_STYPE_DISASSOC ||
stype == WLAN_FC_STYPE_ACTION ||
stype == WLAN_FC_STYPE_ACTION_NO_ACK)) {
decrypted = mgmt_decrypt(wt, data, len, &dlen);
if (decrypted) {
write_pcap_decrypted(wt, decrypted, dlen, NULL, 0);
data = decrypted;
len = dlen;
} else
valid = 0;
}
if (!(fc & WLAN_FC_ISWEP) &&
!(hdr->addr1[0] & 0x01) &&
(stype == WLAN_FC_STYPE_DEAUTH ||
stype == WLAN_FC_STYPE_DISASSOC ||
stype == WLAN_FC_STYPE_ACTION ||
stype == WLAN_FC_STYPE_ACTION_NO_ACK)) {
if (check_mgmt_ccmp_gcmp(wt, data, len) < 0)
valid = 0;
}
switch (stype) {
case WLAN_FC_STYPE_BEACON:
rx_mgmt_beacon(wt, data, len);
break;
case WLAN_FC_STYPE_PROBE_RESP:
rx_mgmt_probe_resp(wt, data, len);
break;
case WLAN_FC_STYPE_AUTH:
rx_mgmt_auth(wt, data, len);
break;
case WLAN_FC_STYPE_DEAUTH:
rx_mgmt_deauth(wt, data, len, valid);
break;
case WLAN_FC_STYPE_ASSOC_REQ:
rx_mgmt_assoc_req(wt, data, len);
break;
case WLAN_FC_STYPE_ASSOC_RESP:
rx_mgmt_assoc_resp(wt, data, len);
break;
case WLAN_FC_STYPE_REASSOC_REQ:
rx_mgmt_reassoc_req(wt, data, len);
break;
case WLAN_FC_STYPE_REASSOC_RESP:
rx_mgmt_reassoc_resp(wt, data, len);
break;
case WLAN_FC_STYPE_DISASSOC:
rx_mgmt_disassoc(wt, data, len, valid);
break;
case WLAN_FC_STYPE_ACTION:
rx_mgmt_action(wt, data, len, valid, false);
break;
case WLAN_FC_STYPE_ACTION_NO_ACK:
rx_mgmt_action(wt, data, len, valid, true);
break;
}
os_free(decrypted);
wt->last_mgmt_valid = valid;
}
static void rx_mgmt_deauth_ack(struct wlantest *wt,
const struct ieee80211_hdr *hdr)
{
const struct ieee80211_mgmt *mgmt;
struct wlantest_bss *bss;
struct wlantest_sta *sta;
mgmt = (const struct ieee80211_mgmt *) hdr;
bss = bss_get(wt, mgmt->bssid);
if (bss == NULL)
return;
if (os_memcmp(mgmt->sa, mgmt->bssid, ETH_ALEN) == 0)
sta = sta_get(bss, mgmt->da);
else
sta = sta_get(bss, mgmt->sa);
if (sta == NULL)
return;
add_note(wt, MSG_DEBUG, "DEAUTH from " MACSTR " acknowledged by "
MACSTR, MAC2STR(mgmt->sa), MAC2STR(mgmt->da));
if (os_memcmp(mgmt->sa, mgmt->bssid, ETH_ALEN) == 0) {
int c;
c = wt->last_mgmt_valid ?
WLANTEST_STA_COUNTER_VALID_DEAUTH_RX_ACK :
WLANTEST_STA_COUNTER_INVALID_DEAUTH_RX_ACK;
sta->counters[c]++;
}
}
static void rx_mgmt_disassoc_ack(struct wlantest *wt,
const struct ieee80211_hdr *hdr)
{
const struct ieee80211_mgmt *mgmt;
struct wlantest_bss *bss;
struct wlantest_sta *sta;
mgmt = (const struct ieee80211_mgmt *) hdr;
bss = bss_get(wt, mgmt->bssid);
if (bss == NULL)
return;
if (os_memcmp(mgmt->sa, mgmt->bssid, ETH_ALEN) == 0)
sta = sta_get(bss, mgmt->da);
else
sta = sta_get(bss, mgmt->sa);
if (sta == NULL)
return;
add_note(wt, MSG_DEBUG, "DISASSOC from " MACSTR " acknowledged by "
MACSTR, MAC2STR(mgmt->sa), MAC2STR(mgmt->da));
if (os_memcmp(mgmt->sa, mgmt->bssid, ETH_ALEN) == 0) {
int c;
c = wt->last_mgmt_valid ?
WLANTEST_STA_COUNTER_VALID_DISASSOC_RX_ACK :
WLANTEST_STA_COUNTER_INVALID_DISASSOC_RX_ACK;
sta->counters[c]++;
}
}
void rx_mgmt_ack(struct wlantest *wt, const struct ieee80211_hdr *hdr)
{
u16 fc, stype;
fc = le_to_host16(hdr->frame_control);
stype = WLAN_FC_GET_STYPE(fc);
wpa_printf(MSG_MSGDUMP, "MGMT ACK: stype=%u a1=" MACSTR " a2=" MACSTR
" a3=" MACSTR,
stype, MAC2STR(hdr->addr1), MAC2STR(hdr->addr2),
MAC2STR(hdr->addr3));
switch (stype) {
case WLAN_FC_STYPE_DEAUTH:
rx_mgmt_deauth_ack(wt, hdr);
break;
case WLAN_FC_STYPE_DISASSOC:
rx_mgmt_disassoc_ack(wt, hdr);
break;
}
}