/*
* Received Data frame processing
- * Copyright (c) 2010, Jouni Malinen <j@w1.fi>
+ * Copyright (c) 2010-2015, Jouni Malinen <j@w1.fi>
*
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- *
- * Alternatively, this software may be distributed under the terms of BSD
- * license.
- *
- * See README and COPYING for more details.
+ * 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 "crypto/aes_wrap.h"
-#include "crypto/crypto.h"
#include "common/defs.h"
#include "common/ieee802_11_defs.h"
-#include "common/eapol_common.h"
-#include "common/wpa_common.h"
-#include "rsn_supp/wpa_ie.h"
#include "wlantest.h"
-static int is_zero(const u8 *buf, size_t len)
-{
- size_t i;
- for (i = 0; i < len; i++) {
- if (buf[i])
- return 0;
- }
- return 1;
-}
-
-
static const char * data_stype(u16 stype)
{
switch (stype) {
}
-static int check_mic(const u8 *kck, int ver, const u8 *data, size_t len)
-{
- u8 *buf;
- int ret = -1;
- struct ieee802_1x_hdr *hdr;
- struct wpa_eapol_key *key;
- u8 rx_mic[16];
-
- buf = os_malloc(len);
- if (buf == NULL)
- return -1;
- os_memcpy(buf, data, len);
- hdr = (struct ieee802_1x_hdr *) buf;
- key = (struct wpa_eapol_key *) (hdr + 1);
-
- os_memcpy(rx_mic, key->key_mic, 16);
- os_memset(key->key_mic, 0, 16);
-
- if (wpa_eapol_key_mic(kck, ver, buf, len, key->key_mic) == 0 &&
- os_memcmp(rx_mic, key->key_mic, 16) == 0)
- ret = 0;
+static void rx_data_eth(struct wlantest *wt, const u8 *bssid,
+ const u8 *sta_addr, const u8 *dst, const u8 *src,
+ u16 ethertype, const u8 *data, size_t len, int prot,
+ const u8 *peer_addr);
- os_free(buf);
-
- return ret;
-}
-
-
-static void rx_data_eapol_key_1_of_4(struct wlantest *wt, const u8 *dst,
- const u8 *src, const u8 *data, size_t len)
+static void rx_data_vlan(struct wlantest *wt, const u8 *bssid,
+ const u8 *sta_addr, const u8 *dst, const u8 *src,
+ const u8 *data, size_t len, int prot,
+ const u8 *peer_addr)
{
- struct wlantest_bss *bss;
- struct wlantest_sta *sta;
- const struct ieee802_1x_hdr *eapol;
- const struct wpa_eapol_key *hdr;
-
- wpa_printf(MSG_DEBUG, "EAPOL-Key 1/4 " MACSTR " -> " MACSTR,
- MAC2STR(src), MAC2STR(dst));
- bss = bss_get(wt, src);
- if (bss == NULL)
- return;
- sta = sta_get(bss, dst);
- if (sta == NULL)
- return;
-
- eapol = (const struct ieee802_1x_hdr *) data;
- hdr = (const struct wpa_eapol_key *) (eapol + 1);
- if (is_zero(hdr->key_nonce, WPA_NONCE_LEN)) {
- wpa_printf(MSG_INFO, "EAPOL-Key 1/4 from " MACSTR " used "
- "zero nonce", MAC2STR(src));
- }
- if (!is_zero(hdr->key_rsc, 8)) {
- wpa_printf(MSG_INFO, "EAPOL-Key 1/4 from " MACSTR " used "
- "non-zero Key RSC", MAC2STR(src));
- }
- os_memcpy(sta->anonce, hdr->key_nonce, WPA_NONCE_LEN);
-}
-
-
-static int try_pmk(struct wlantest_bss *bss, struct wlantest_sta *sta,
- u16 ver, const u8 *data, size_t len,
- struct wlantest_pmk *pmk)
-{
- struct wpa_ptk ptk;
- size_t ptk_len = sta->pairwise_cipher == WPA_CIPHER_TKIP ? 64 : 48;
- wpa_pmk_to_ptk(pmk->pmk, sizeof(pmk->pmk),
- "Pairwise key expansion",
- bss->bssid, sta->addr, sta->anonce, sta->snonce,
- (u8 *) &ptk, ptk_len,
- wpa_key_mgmt_sha256(sta->key_mgmt));
- if (check_mic(ptk.kck, ver, data, len) < 0)
- return -1;
-
- wpa_printf(MSG_INFO, "Derived PTK for STA " MACSTR " BSSID " MACSTR,
- MAC2STR(sta->addr), MAC2STR(bss->bssid));
- sta->counters[WLANTEST_STA_COUNTER_PTK_LEARNED]++;
- os_memcpy(&sta->ptk, &ptk, sizeof(ptk));
- wpa_hexdump(MSG_DEBUG, "PTK:KCK", sta->ptk.kck, 16);
- wpa_hexdump(MSG_DEBUG, "PTK:KEK", sta->ptk.kek, 16);
- wpa_hexdump(MSG_DEBUG, "PTK:TK1", sta->ptk.tk1, 16);
- if (ptk_len > 48)
- wpa_hexdump(MSG_DEBUG, "PTK:TK2", sta->ptk.u.tk2, 16);
- sta->ptk_set = 1;
- os_memset(sta->rsc_tods, 0, sizeof(sta->rsc_tods));
- os_memset(sta->rsc_fromds, 0, sizeof(sta->rsc_fromds));
- return 0;
-}
-
-
-static void derive_ptk(struct wlantest *wt, struct wlantest_bss *bss,
- struct wlantest_sta *sta, u16 ver,
- const u8 *data, size_t len)
-{
- struct wlantest_pmk *pmk;
-
- dl_list_for_each(pmk, &bss->pmk, struct wlantest_pmk, list) {
- if (try_pmk(bss, sta, ver, data, len, pmk) == 0)
- return;
- }
-
- dl_list_for_each(pmk, &wt->pmk, struct wlantest_pmk, list) {
- if (try_pmk(bss, sta, ver, data, len, pmk) == 0)
- return;
- }
-}
-
-
-static void rx_data_eapol_key_2_of_4(struct wlantest *wt, const u8 *dst,
- const u8 *src, const u8 *data, size_t len)
-{
- struct wlantest_bss *bss;
- struct wlantest_sta *sta;
- const struct ieee802_1x_hdr *eapol;
- const struct wpa_eapol_key *hdr;
- const u8 *key_data;
- u16 key_info, key_data_len;
- struct wpa_eapol_ie_parse ie;
-
- wpa_printf(MSG_DEBUG, "EAPOL-Key 2/4 " MACSTR " -> " MACSTR,
- MAC2STR(src), MAC2STR(dst));
- bss = bss_get(wt, dst);
- if (bss == NULL)
- return;
- sta = sta_get(bss, src);
- if (sta == NULL)
- return;
-
- eapol = (const struct ieee802_1x_hdr *) data;
- hdr = (const struct wpa_eapol_key *) (eapol + 1);
- if (is_zero(hdr->key_nonce, WPA_NONCE_LEN)) {
- wpa_printf(MSG_INFO, "EAPOL-Key 2/4 from " MACSTR " used "
- "zero nonce", MAC2STR(src));
- }
- if (!is_zero(hdr->key_rsc, 8)) {
- wpa_printf(MSG_INFO, "EAPOL-Key 2/4 from " MACSTR " used "
- "non-zero Key RSC", MAC2STR(src));
- }
- os_memcpy(sta->snonce, hdr->key_nonce, WPA_NONCE_LEN);
- key_info = WPA_GET_BE16(hdr->key_info);
- key_data_len = WPA_GET_BE16(hdr->key_data_length);
- derive_ptk(wt, bss, sta, key_info & WPA_KEY_INFO_TYPE_MASK, data, len);
-
- if (!sta->ptk_set) {
- wpa_printf(MSG_DEBUG, "No PTK known to process EAPOL-Key 2/4");
- return;
- }
-
- if (check_mic(sta->ptk.kck, key_info & WPA_KEY_INFO_TYPE_MASK,
- data, len) < 0) {
- wpa_printf(MSG_INFO, "Mismatch in EAPOL-Key 2/4 MIC");
- return;
- }
- wpa_printf(MSG_DEBUG, "Valid MIC found in EAPOL-Key 2/4");
-
- key_data = (const u8 *) (hdr + 1);
+ u16 tag;
- if (wpa_supplicant_parse_ies(key_data, key_data_len, &ie) < 0) {
- wpa_printf(MSG_INFO, "Failed to parse EAPOL-Key Key Data");
+ if (len < 4)
return;
- }
-
- if (ie.wpa_ie) {
- wpa_hexdump(MSG_MSGDUMP, "EAPOL-Key Key Data - WPA IE",
- ie.wpa_ie, ie.wpa_ie_len);
- if (os_memcmp(ie.wpa_ie, sta->rsnie, ie.wpa_ie_len) != 0) {
- wpa_printf(MSG_INFO, "Mismatch in WPA IE between "
- "EAPOL-Key 2/4 and (Re)Association "
- "Request from " MACSTR, MAC2STR(sta->addr));
- wpa_hexdump(MSG_INFO, "WPA IE in EAPOL-Key",
- ie.wpa_ie, ie.wpa_ie_len);
- wpa_hexdump(MSG_INFO, "WPA IE in (Re)Association "
- "Request",
- sta->rsnie,
- sta->rsnie[0] ? 2 + sta->rsnie[1] : 0);
- }
- }
-
- if (ie.rsn_ie) {
- wpa_hexdump(MSG_MSGDUMP, "EAPOL-Key Key Data - RSN IE",
- ie.rsn_ie, ie.rsn_ie_len);
- if (os_memcmp(ie.rsn_ie, sta->rsnie, ie.rsn_ie_len) != 0) {
- wpa_printf(MSG_INFO, "Mismatch in RSN IE between "
- "EAPOL-Key 2/4 and (Re)Association "
- "Request from " MACSTR, MAC2STR(sta->addr));
- wpa_hexdump(MSG_INFO, "RSN IE in EAPOL-Key",
- ie.rsn_ie, ie.rsn_ie_len);
- wpa_hexdump(MSG_INFO, "RSN IE in (Re)Association "
- "Request",
- sta->rsnie,
- sta->rsnie[0] ? 2 + sta->rsnie[1] : 0);
- }
- }
+ tag = WPA_GET_BE16(data);
+ wpa_printf(MSG_MSGDUMP, "VLAN tag: Priority=%u ID=%u",
+ tag >> 12, tag & 0x0ffff);
+ /* ignore VLAN information and process the original frame */
+ rx_data_eth(wt, bssid, sta_addr, dst, src, WPA_GET_BE16(data + 2),
+ data + 4, len - 4, prot, peer_addr);
}
-static u8 * decrypt_eapol_key_data_rc4(const u8 *kek,
- const struct wpa_eapol_key *hdr,
- size_t *len)
+static void rx_data_eth(struct wlantest *wt, const u8 *bssid,
+ const u8 *sta_addr, const u8 *dst, const u8 *src,
+ u16 ethertype, const u8 *data, size_t len, int prot,
+ const u8 *peer_addr)
{
- u8 ek[32], *buf;
- u16 keydatalen = WPA_GET_BE16(hdr->key_data_length);
-
- buf = os_malloc(keydatalen);
- if (buf == NULL)
- return NULL;
-
- os_memcpy(ek, hdr->key_iv, 16);
- os_memcpy(ek + 16, kek, 16);
- os_memcpy(buf, hdr + 1, keydatalen);
- if (rc4_skip(ek, 32, 256, buf, keydatalen)) {
- wpa_printf(MSG_INFO, "RC4 failed");
- os_free(buf);
- return NULL;
- }
-
- *len = keydatalen;
- return buf;
-}
-
-
-static u8 * decrypt_eapol_key_data_aes(const u8 *kek,
- const struct wpa_eapol_key *hdr,
- size_t *len)
-{
- u8 *buf;
- u16 keydatalen = WPA_GET_BE16(hdr->key_data_length);
-
- if (keydatalen % 8) {
- wpa_printf(MSG_INFO, "Unsupported AES-WRAP len %d",
- keydatalen);
- return NULL;
- }
- keydatalen -= 8; /* AES-WRAP adds 8 bytes */
- buf = os_malloc(keydatalen);
- if (buf == NULL)
- return NULL;
- if (aes_unwrap(kek, keydatalen / 8, (u8 *) (hdr + 1), buf)) {
- os_free(buf);
- wpa_printf(MSG_INFO, "AES unwrap failed - "
- "could not decrypt EAPOL-Key key data");
- return NULL;
- }
-
- *len = keydatalen;
- return buf;
-}
-
-
-static u8 * decrypt_eapol_key_data(const u8 *kek, u16 ver,
- const struct wpa_eapol_key *hdr,
- size_t *len)
-{
- switch (ver) {
- case WPA_KEY_INFO_TYPE_HMAC_MD5_RC4:
- return decrypt_eapol_key_data_rc4(kek, hdr, len);
- case WPA_KEY_INFO_TYPE_HMAC_SHA1_AES:
- case WPA_KEY_INFO_TYPE_AES_128_CMAC:
- return decrypt_eapol_key_data_aes(kek, hdr, len);
- default:
- wpa_printf(MSG_INFO, "Unsupported EAPOL-Key Key Descriptor "
- "Version %u", ver);
- return NULL;
- }
-}
-
-
-static void learn_kde_keys(struct wlantest_bss *bss, const u8 *buf, size_t len,
- const u8 *rsc)
-{
- struct wpa_eapol_ie_parse ie;
-
- if (wpa_supplicant_parse_ies(buf, len, &ie) < 0) {
- wpa_printf(MSG_INFO, "Failed to parse EAPOL-Key Key Data");
- return;
- }
-
- if (ie.wpa_ie) {
- wpa_hexdump(MSG_MSGDUMP, "EAPOL-Key Key Data - WPA IE",
- ie.wpa_ie, ie.wpa_ie_len);
- }
-
- if (ie.rsn_ie) {
- wpa_hexdump(MSG_MSGDUMP, "EAPOL-Key Key Data - RSN IE",
- ie.rsn_ie, ie.rsn_ie_len);
- }
-
- if (ie.gtk) {
- wpa_hexdump(MSG_MSGDUMP, "EAPOL-Key Key Data - GTK KDE",
- ie.gtk, ie.gtk_len);
- if (ie.gtk_len >= 2 && ie.gtk_len <= 2 + 32) {
- int id;
- id = ie.gtk[0] & 0x03;
- wpa_printf(MSG_DEBUG, "GTK KeyID=%u tx=%u",
- id, !!(ie.gtk[0] & 0x04));
- if ((ie.gtk[0] & 0xf8) || ie.gtk[1])
- wpa_printf(MSG_INFO, "GTK KDE: Reserved field "
- "set: %02x %02x",
- ie.gtk[0], ie.gtk[1]);
- wpa_hexdump(MSG_DEBUG, "GTK", ie.gtk + 2,
- ie.gtk_len - 2);
- bss->gtk_len[id] = ie.gtk_len - 2;
- os_memcpy(bss->gtk[id], ie.gtk + 2, ie.gtk_len - 2);
- bss->rsc[id][0] = rsc[5];
- bss->rsc[id][1] = rsc[4];
- bss->rsc[id][2] = rsc[3];
- bss->rsc[id][3] = rsc[2];
- bss->rsc[id][4] = rsc[1];
- bss->rsc[id][5] = rsc[0];
- wpa_hexdump(MSG_DEBUG, "RSC", bss->rsc[id], 6);
- } else {
- wpa_printf(MSG_INFO, "Invalid GTK KDE length %u",
- (unsigned) ie.gtk_len);
- }
- }
-
- if (ie.igtk) {
- wpa_hexdump(MSG_MSGDUMP, "EAPOL-Key Key Data - IGTK KDE",
- ie.igtk, ie.igtk_len);
- if (ie.igtk_len == 24) {
- u16 id;
- id = WPA_GET_LE16(ie.igtk);
- if (id > 5) {
- wpa_printf(MSG_INFO, "Unexpected IGTK KeyID "
- "%u", id);
- } else {
- wpa_printf(MSG_DEBUG, "IGTK KeyID %u", id);
- wpa_hexdump(MSG_DEBUG, "IPN", ie.igtk + 2, 6);
- wpa_hexdump(MSG_DEBUG, "IGTK", ie.igtk + 8,
- 16);
- os_memcpy(bss->igtk[id], ie.igtk + 8, 16);
- bss->igtk_set[id] = 1;
- }
- } else {
- wpa_printf(MSG_INFO, "Invalid IGTK KDE length %u",
- (unsigned) ie.igtk_len);
- }
+ switch (ethertype) {
+ case ETH_P_PAE:
+ rx_data_eapol(wt, bssid, sta_addr, dst, src, data, len, prot);
+ break;
+ case ETH_P_IP:
+ rx_data_ip(wt, bssid, sta_addr, dst, src, data, len,
+ peer_addr);
+ break;
+ case 0x890d:
+ rx_data_80211_encap(wt, bssid, sta_addr, dst, src, data, len);
+ break;
+ case ETH_P_8021Q:
+ rx_data_vlan(wt, bssid, sta_addr, dst, src, data, len, prot,
+ peer_addr);
+ break;
}
}
-static void rx_data_eapol_key_3_of_4(struct wlantest *wt, const u8 *dst,
- const u8 *src, const u8 *data, size_t len)
+static void rx_data_process(struct wlantest *wt, const u8 *bssid,
+ const u8 *sta_addr,
+ const u8 *dst, const u8 *src,
+ const u8 *data, size_t len, int prot,
+ const u8 *peer_addr)
{
- struct wlantest_bss *bss;
- struct wlantest_sta *sta;
- const struct ieee802_1x_hdr *eapol;
- const struct wpa_eapol_key *hdr;
- const u8 *key_data;
- int recalc = 0;
- u16 key_info, ver;
- u8 *decrypted_buf = NULL;
- const u8 *decrypted;
- size_t decrypted_len = 0;
- struct wpa_eapol_ie_parse ie;
-
- wpa_printf(MSG_DEBUG, "EAPOL-Key 3/4 " MACSTR " -> " MACSTR,
- MAC2STR(src), MAC2STR(dst));
- bss = bss_get(wt, src);
- if (bss == NULL)
- return;
- sta = sta_get(bss, dst);
- if (sta == NULL)
- return;
-
- eapol = (const struct ieee802_1x_hdr *) data;
- hdr = (const struct wpa_eapol_key *) (eapol + 1);
- key_info = WPA_GET_BE16(hdr->key_info);
-
- if (os_memcmp(sta->anonce, hdr->key_nonce, WPA_NONCE_LEN) != 0) {
- wpa_printf(MSG_INFO, "EAPOL-Key ANonce mismatch between 1/4 "
- "and 3/4");
- recalc = 1;
- }
- os_memcpy(sta->anonce, hdr->key_nonce, WPA_NONCE_LEN);
- if (recalc) {
- derive_ptk(wt, bss, sta, key_info & WPA_KEY_INFO_TYPE_MASK,
- data, len);
- }
-
- if (!sta->ptk_set) {
- wpa_printf(MSG_DEBUG, "No PTK known to process EAPOL-Key 3/4");
+ if (len == 0)
return;
- }
- if (check_mic(sta->ptk.kck, key_info & WPA_KEY_INFO_TYPE_MASK,
- data, len) < 0) {
- wpa_printf(MSG_INFO, "Mismatch in EAPOL-Key 3/4 MIC");
- return;
- }
- wpa_printf(MSG_DEBUG, "Valid MIC found in EAPOL-Key 3/4");
-
- key_data = (const u8 *) (hdr + 1);
- if (!(key_info & WPA_KEY_INFO_ENCR_KEY_DATA)) {
- if (sta->proto & WPA_PROTO_RSN)
- wpa_printf(MSG_INFO, "EAPOL-Key 3/4 without "
- "EncrKeyData bit");
- decrypted = key_data;
- decrypted_len = WPA_GET_BE16(hdr->key_data_length);
- } else {
- ver = key_info & WPA_KEY_INFO_TYPE_MASK;
- decrypted_buf = decrypt_eapol_key_data(sta->ptk.kek, ver, hdr,
- &decrypted_len);
- if (decrypted_buf == NULL) {
- wpa_printf(MSG_INFO, "Failed to decrypt EAPOL-Key Key "
- "Data");
- return;
- }
- decrypted = decrypted_buf;
- wpa_hexdump(MSG_DEBUG, "Decrypted EAPOL-Key Key Data",
- decrypted, decrypted_len);
- }
- if (wt->write_pcap_dumper && decrypted != key_data) {
- /* Fill in a dummy Data frame header */
- u8 buf[24 + 8 + sizeof(*eapol) + sizeof(*hdr)];
- struct ieee80211_hdr *h;
- struct wpa_eapol_key *k;
- const u8 *p;
- u8 *pos;
- size_t plain_len;
-
- plain_len = decrypted_len;
- p = decrypted;
- while (p + 1 < decrypted + decrypted_len) {
- if (p[0] == 0xdd && p[1] == 0x00) {
- /* Remove padding */
- plain_len = p - decrypted;
- break;
- }
- p += 2 + p[1];
- }
-
- os_memset(buf, 0, sizeof(buf));
- h = (struct ieee80211_hdr *) buf;
- h->frame_control = host_to_le16(0x0208);
- os_memcpy(h->addr1, dst, ETH_ALEN);
- os_memcpy(h->addr2, src, ETH_ALEN);
- os_memcpy(h->addr3, src, ETH_ALEN);
- pos = (u8 *) (h + 1);
- os_memcpy(pos, "\xaa\xaa\x03\x00\x00\x00\x88\x8e", 8);
- pos += 8;
- os_memcpy(pos, eapol, sizeof(*eapol));
- pos += sizeof(*eapol);
- os_memcpy(pos, hdr, sizeof(*hdr));
- k = (struct wpa_eapol_key *) pos;
- WPA_PUT_BE16(k->key_info,
- key_info & ~WPA_KEY_INFO_ENCR_KEY_DATA);
- WPA_PUT_BE16(k->key_data_length, plain_len);
- write_pcap_decrypted(wt, buf, sizeof(buf),
- decrypted, plain_len);
- }
-
- if (wpa_supplicant_parse_ies(decrypted, decrypted_len, &ie) < 0) {
- wpa_printf(MSG_INFO, "Failed to parse EAPOL-Key Key Data");
- os_free(decrypted_buf);
+ if (len >= 8 && os_memcmp(data, "\xaa\xaa\x03\x00\x00\x00", 6) == 0) {
+ rx_data_eth(wt, bssid, sta_addr, dst, src,
+ WPA_GET_BE16(data + 6), data + 8, len - 8, prot,
+ peer_addr);
return;
}
- if ((ie.wpa_ie &&
- os_memcmp(ie.wpa_ie, bss->wpaie, ie.wpa_ie_len) != 0) ||
- (ie.wpa_ie == NULL && bss->wpaie[0])) {
- wpa_printf(MSG_INFO, "Mismatch in WPA IE between "
- "EAPOL-Key 3/4 and Beacon/Probe Response "
- "from " MACSTR, MAC2STR(bss->bssid));
- wpa_hexdump(MSG_INFO, "WPA IE in EAPOL-Key",
- ie.wpa_ie, ie.wpa_ie_len);
- wpa_hexdump(MSG_INFO, "WPA IE in Beacon/Probe "
- "Response",
- bss->wpaie,
- bss->wpaie[0] ? 2 + bss->wpaie[1] : 0);
- }
-
- if ((ie.rsn_ie &&
- os_memcmp(ie.rsn_ie, bss->rsnie, ie.rsn_ie_len) != 0) ||
- (ie.rsn_ie == NULL && bss->rsnie[0])) {
- wpa_printf(MSG_INFO, "Mismatch in RSN IE between "
- "EAPOL-Key 3/4 and Beacon/Probe Response "
- "from " MACSTR, MAC2STR(bss->bssid));
- wpa_hexdump(MSG_INFO, "RSN IE in EAPOL-Key",
- ie.rsn_ie, ie.rsn_ie_len);
- wpa_hexdump(MSG_INFO, "RSN IE in (Re)Association "
- "Request",
- bss->rsnie,
- bss->rsnie[0] ? 2 + bss->rsnie[1] : 0);
- }
-
- learn_kde_keys(bss, decrypted, decrypted_len, hdr->key_rsc);
- os_free(decrypted_buf);
+ wpa_hexdump(MSG_DEBUG, "Unrecognized LLC", data, len > 8 ? 8 : len);
}
-static void rx_data_eapol_key_4_of_4(struct wlantest *wt, const u8 *dst,
- const u8 *src, const u8 *data, size_t len)
+static void write_decrypted_note(struct wlantest *wt, const u8 *decrypted,
+ const u8 *tk, size_t tk_len, int keyid)
{
- struct wlantest_bss *bss;
- struct wlantest_sta *sta;
- const struct ieee802_1x_hdr *eapol;
- const struct wpa_eapol_key *hdr;
- u16 key_info;
-
- wpa_printf(MSG_DEBUG, "EAPOL-Key 4/4 " MACSTR " -> " MACSTR,
- MAC2STR(src), MAC2STR(dst));
- bss = bss_get(wt, dst);
- if (bss == NULL)
- return;
- sta = sta_get(bss, src);
- if (sta == NULL)
- return;
+ char tk_hex[65];
- eapol = (const struct ieee802_1x_hdr *) data;
- hdr = (const struct wpa_eapol_key *) (eapol + 1);
- if (!is_zero(hdr->key_rsc, 8)) {
- wpa_printf(MSG_INFO, "EAPOL-Key 4/4 from " MACSTR " used "
- "non-zero Key RSC", MAC2STR(src));
- }
- key_info = WPA_GET_BE16(hdr->key_info);
-
- if (!sta->ptk_set) {
- wpa_printf(MSG_DEBUG, "No PTK known to process EAPOL-Key 4/4");
+ if (!decrypted)
return;
- }
- if (sta->ptk_set &&
- check_mic(sta->ptk.kck, key_info & WPA_KEY_INFO_TYPE_MASK,
- data, len) < 0) {
- wpa_printf(MSG_INFO, "Mismatch in EAPOL-Key 4/4 MIC");
- return;
- }
- wpa_printf(MSG_DEBUG, "Valid MIC found in EAPOL-Key 4/4");
+ wpa_snprintf_hex(tk_hex, sizeof(tk_hex), tk, tk_len);
+ add_note(wt, MSG_EXCESSIVE, "TK[%d] %s", keyid, tk_hex);
}
-static void rx_data_eapol_key_1_of_2(struct wlantest *wt, const u8 *dst,
- const u8 *src, const u8 *data, size_t len)
+static u8 * try_ptk(int pairwise_cipher, struct wpa_ptk *ptk,
+ const struct ieee80211_hdr *hdr,
+ const u8 *data, size_t data_len, size_t *decrypted_len)
{
- struct wlantest_bss *bss;
- struct wlantest_sta *sta;
- const struct ieee802_1x_hdr *eapol;
- const struct wpa_eapol_key *hdr;
- const u8 *key_data;
- u16 key_info, ver;
u8 *decrypted;
- size_t decrypted_len = 0;
-
- wpa_printf(MSG_DEBUG, "EAPOL-Key 1/2 " MACSTR " -> " MACSTR,
- MAC2STR(src), MAC2STR(dst));
- bss = bss_get(wt, src);
- if (bss == NULL)
- return;
- sta = sta_get(bss, dst);
- if (sta == NULL)
- return;
-
- eapol = (const struct ieee802_1x_hdr *) data;
- hdr = (const struct wpa_eapol_key *) (eapol + 1);
- key_info = WPA_GET_BE16(hdr->key_info);
-
- if (!sta->ptk_set) {
- wpa_printf(MSG_DEBUG, "No PTK known to process EAPOL-Key 1/2");
- return;
- }
-
- if (sta->ptk_set &&
- check_mic(sta->ptk.kck, key_info & WPA_KEY_INFO_TYPE_MASK,
- data, len) < 0) {
- wpa_printf(MSG_INFO, "Mismatch in EAPOL-Key 1/2 MIC");
- return;
- }
- wpa_printf(MSG_DEBUG, "Valid MIC found in EAPOL-Key 1/2");
-
- key_data = (const u8 *) (hdr + 1);
- if (sta->proto & WPA_PROTO_RSN &&
- !(key_info & WPA_KEY_INFO_ENCR_KEY_DATA)) {
- wpa_printf(MSG_INFO, "EAPOL-Key 1/2 without EncrKeyData bit");
- return;
- }
- ver = key_info & WPA_KEY_INFO_TYPE_MASK;
- decrypted = decrypt_eapol_key_data(sta->ptk.kek, ver, hdr,
- &decrypted_len);
- if (decrypted == NULL) {
- wpa_printf(MSG_INFO, "Failed to decrypt EAPOL-Key Key Data");
- return;
- }
- wpa_hexdump(MSG_DEBUG, "Decrypted EAPOL-Key Key Data",
- decrypted, decrypted_len);
- if (wt->write_pcap_dumper) {
- /* Fill in a dummy Data frame header */
- u8 buf[24 + 8 + sizeof(*eapol) + sizeof(*hdr)];
- struct ieee80211_hdr *h;
- struct wpa_eapol_key *k;
- u8 *pos;
- size_t plain_len;
-
- plain_len = decrypted_len;
- pos = decrypted;
- while (pos + 1 < decrypted + decrypted_len) {
- if (pos[0] == 0xdd && pos[1] == 0x00) {
- /* Remove padding */
- plain_len = pos - decrypted;
- break;
- }
- pos += 2 + pos[1];
- }
-
- os_memset(buf, 0, sizeof(buf));
- h = (struct ieee80211_hdr *) buf;
- h->frame_control = host_to_le16(0x0208);
- os_memcpy(h->addr1, dst, ETH_ALEN);
- os_memcpy(h->addr2, src, ETH_ALEN);
- os_memcpy(h->addr3, src, ETH_ALEN);
- pos = (u8 *) (h + 1);
- os_memcpy(pos, "\xaa\xaa\x03\x00\x00\x00\x88\x8e", 8);
- pos += 8;
- os_memcpy(pos, eapol, sizeof(*eapol));
- pos += sizeof(*eapol);
- os_memcpy(pos, hdr, sizeof(*hdr));
- k = (struct wpa_eapol_key *) pos;
- WPA_PUT_BE16(k->key_info,
- key_info & ~WPA_KEY_INFO_ENCR_KEY_DATA);
- WPA_PUT_BE16(k->key_data_length, plain_len);
- write_pcap_decrypted(wt, buf, sizeof(buf),
- decrypted, plain_len);
- }
- if (sta->proto & WPA_PROTO_RSN)
- learn_kde_keys(bss, decrypted, decrypted_len, hdr->key_rsc);
- else {
- int len = bss->group_cipher == WPA_CIPHER_TKIP ? 32 : 16;
- if (decrypted_len == len) {
- const u8 *rsc = hdr->key_rsc;
- int id;
- id = (key_info & WPA_KEY_INFO_KEY_INDEX_MASK) >>
- WPA_KEY_INFO_KEY_INDEX_SHIFT;
- wpa_printf(MSG_DEBUG, "GTK key index %d", id);
- wpa_hexdump(MSG_DEBUG, "GTK", decrypted,
- decrypted_len);
- bss->gtk_len[id] = decrypted_len;
- os_memcpy(bss->gtk[id], decrypted, decrypted_len);
- bss->rsc[id][0] = rsc[5];
- bss->rsc[id][1] = rsc[4];
- bss->rsc[id][2] = rsc[3];
- bss->rsc[id][3] = rsc[2];
- bss->rsc[id][4] = rsc[1];
- bss->rsc[id][5] = rsc[0];
- wpa_hexdump(MSG_DEBUG, "RSC", bss->rsc[id], 6);
- } else {
- wpa_printf(MSG_INFO, "Unexpected WPA Key Data length "
- "in Group Key msg 1/2 from " MACSTR,
- MAC2STR(src));
- }
- }
- os_free(decrypted);
+ unsigned int tk_len = ptk->tk_len;
+
+ decrypted = NULL;
+ if ((pairwise_cipher == WPA_CIPHER_CCMP ||
+ pairwise_cipher == 0) && tk_len == 16) {
+ decrypted = ccmp_decrypt(ptk->tk, hdr, data,
+ data_len, decrypted_len);
+ } else if ((pairwise_cipher == WPA_CIPHER_CCMP_256 ||
+ pairwise_cipher == 0) && tk_len == 32) {
+ decrypted = ccmp_256_decrypt(ptk->tk, hdr, data,
+ data_len, decrypted_len);
+ } else if ((pairwise_cipher == WPA_CIPHER_GCMP ||
+ pairwise_cipher == WPA_CIPHER_GCMP_256 ||
+ pairwise_cipher == 0) &&
+ (tk_len == 16 || tk_len == 32)) {
+ decrypted = gcmp_decrypt(ptk->tk, tk_len, hdr,
+ data, data_len, decrypted_len);
+ } else if ((pairwise_cipher == WPA_CIPHER_TKIP ||
+ pairwise_cipher == 0) && tk_len == 32) {
+ decrypted = tkip_decrypt(ptk->tk, hdr, data, data_len,
+ decrypted_len);
+ }
+
+ return decrypted;
}
-static void rx_data_eapol_key_2_of_2(struct wlantest *wt, const u8 *dst,
- const u8 *src, const u8 *data, size_t len)
+static u8 * try_all_ptk(struct wlantest *wt, int pairwise_cipher,
+ const struct ieee80211_hdr *hdr, int keyid,
+ const u8 *data, size_t data_len, size_t *decrypted_len)
{
- struct wlantest_bss *bss;
- struct wlantest_sta *sta;
- const struct ieee802_1x_hdr *eapol;
- const struct wpa_eapol_key *hdr;
- u16 key_info;
-
- wpa_printf(MSG_DEBUG, "EAPOL-Key 2/2 " MACSTR " -> " MACSTR,
- MAC2STR(src), MAC2STR(dst));
- bss = bss_get(wt, dst);
- if (bss == NULL)
- return;
- sta = sta_get(bss, src);
- if (sta == NULL)
- return;
-
- eapol = (const struct ieee802_1x_hdr *) data;
- hdr = (const struct wpa_eapol_key *) (eapol + 1);
- if (!is_zero(hdr->key_rsc, 8)) {
- wpa_printf(MSG_INFO, "EAPOL-Key 2/2 from " MACSTR " used "
- "non-zero Key RSC", MAC2STR(src));
- }
- key_info = WPA_GET_BE16(hdr->key_info);
-
- if (!sta->ptk_set) {
- wpa_printf(MSG_DEBUG, "No PTK known to process EAPOL-Key 2/2");
- return;
- }
-
- if (sta->ptk_set &&
- check_mic(sta->ptk.kck, key_info & WPA_KEY_INFO_TYPE_MASK,
- data, len) < 0) {
- wpa_printf(MSG_INFO, "Mismatch in EAPOL-Key 2/2 MIC");
- return;
- }
- wpa_printf(MSG_DEBUG, "Valid MIC found in EAPOL-Key 2/2");
-}
-
-
-static void rx_data_eapol_key(struct wlantest *wt, const u8 *dst,
- const u8 *src, const u8 *data, size_t len,
- int prot)
-{
- const struct ieee802_1x_hdr *eapol;
- const struct wpa_eapol_key *hdr;
- const u8 *key_data;
- u16 key_info, key_length, ver, key_data_length;
-
- eapol = (const struct ieee802_1x_hdr *) data;
- hdr = (const struct wpa_eapol_key *) (eapol + 1);
-
- wpa_hexdump(MSG_MSGDUMP, "EAPOL-Key",
- (const u8 *) hdr, len - sizeof(*eapol));
- if (len < sizeof(*hdr)) {
- wpa_printf(MSG_INFO, "Too short EAPOL-Key frame from " MACSTR,
- MAC2STR(src));
- return;
- }
-
- if (hdr->type == EAPOL_KEY_TYPE_RC4) {
- /* TODO: EAPOL-Key RC4 for WEP */
- wpa_printf(MSG_INFO, "EAPOL-Key Descriptor Type RC4 from "
- MACSTR, MAC2STR(src));
- return;
- }
-
- if (hdr->type != EAPOL_KEY_TYPE_RSN &&
- hdr->type != EAPOL_KEY_TYPE_WPA) {
- wpa_printf(MSG_INFO, "Unsupported EAPOL-Key Descriptor Type "
- "%u from " MACSTR, hdr->type, MAC2STR(src));
- return;
- }
-
- key_info = WPA_GET_BE16(hdr->key_info);
- key_length = WPA_GET_BE16(hdr->key_length);
- key_data_length = WPA_GET_BE16(hdr->key_data_length);
- key_data = (const u8 *) (hdr + 1);
- if (key_data + key_data_length > data + len) {
- wpa_printf(MSG_INFO, "Truncated EAPOL-Key from " MACSTR,
- MAC2STR(src));
- return;
- }
- if (key_data + key_data_length < data + len) {
- wpa_hexdump(MSG_DEBUG, "Extra data after EAPOL-Key Key Data "
- "field", key_data + key_data_length,
- data + len - key_data - key_data_length);
- }
-
-
- ver = key_info & WPA_KEY_INFO_TYPE_MASK;
- wpa_printf(MSG_DEBUG, "EAPOL-Key ver=%u %c idx=%u%s%s%s%s%s%s%s%s "
- "datalen=%u",
- ver, key_info & WPA_KEY_INFO_KEY_TYPE ? 'P' : 'G',
- (key_info & WPA_KEY_INFO_KEY_INDEX_MASK) >>
- WPA_KEY_INFO_KEY_INDEX_SHIFT,
- (key_info & WPA_KEY_INFO_INSTALL) ? " Install" : "",
- (key_info & WPA_KEY_INFO_ACK) ? " ACK" : "",
- (key_info & WPA_KEY_INFO_MIC) ? " MIC" : "",
- (key_info & WPA_KEY_INFO_SECURE) ? " Secure" : "",
- (key_info & WPA_KEY_INFO_ERROR) ? " Error" : "",
- (key_info & WPA_KEY_INFO_REQUEST) ? " Request" : "",
- (key_info & WPA_KEY_INFO_ENCR_KEY_DATA) ? " Encr" : "",
- (key_info & WPA_KEY_INFO_SMK_MESSAGE) ? " SMK" : "",
- key_data_length);
-
- if (ver != WPA_KEY_INFO_TYPE_HMAC_MD5_RC4 &&
- ver != WPA_KEY_INFO_TYPE_HMAC_SHA1_AES &&
- ver != WPA_KEY_INFO_TYPE_AES_128_CMAC) {
- wpa_printf(MSG_INFO, "Unsupported EAPOL-Key Key Descriptor "
- "Version %u from " MACSTR, ver, MAC2STR(src));
- return;
- }
-
- wpa_hexdump(MSG_MSGDUMP, "EAPOL-Key Replay Counter",
- hdr->replay_counter, WPA_REPLAY_COUNTER_LEN);
- wpa_hexdump(MSG_MSGDUMP, "EAPOL-Key Key Nonce",
- hdr->key_nonce, WPA_NONCE_LEN);
- wpa_hexdump(MSG_MSGDUMP, "EAPOL-Key Key IV",
- hdr->key_iv, 16);
- wpa_hexdump(MSG_MSGDUMP, "EAPOL-Key RSC",
- hdr->key_rsc, WPA_KEY_RSC_LEN);
- wpa_hexdump(MSG_MSGDUMP, "EAPOL-Key Key MIC",
- hdr->key_mic, 16);
- wpa_hexdump(MSG_MSGDUMP, "EAPOL-Key Key Data",
- key_data, key_data_length);
-
- if (hdr->type == EAPOL_KEY_TYPE_RSN &&
- (key_info & (WPA_KEY_INFO_KEY_INDEX_MASK | BIT(14) | BIT(15))) !=
- 0) {
- wpa_printf(MSG_INFO, "RSN EAPOL-Key with non-zero reserved "
- "Key Info bits 0x%x from " MACSTR,
- key_info, MAC2STR(src));
- }
-
- if (hdr->type == EAPOL_KEY_TYPE_WPA &&
- (key_info & (WPA_KEY_INFO_ENCR_KEY_DATA |
- WPA_KEY_INFO_SMK_MESSAGE |BIT(14) | BIT(15))) != 0) {
- wpa_printf(MSG_INFO, "WPA EAPOL-Key with non-zero reserved "
- "Key Info bits 0x%x from " MACSTR,
- key_info, MAC2STR(src));
- }
-
- if (key_length > 32) {
- wpa_printf(MSG_INFO, "EAPOL-Key with invalid Key Length %d "
- "from " MACSTR, key_length, MAC2STR(src));
- }
-
- if (ver != WPA_KEY_INFO_TYPE_HMAC_MD5_RC4 &&
- !is_zero(hdr->key_iv, 16)) {
- wpa_printf(MSG_INFO, "EAPOL-Key with non-zero Key IV "
- "(reserved with ver=%d) field from " MACSTR,
- ver, MAC2STR(src));
- wpa_hexdump(MSG_INFO, "EAPOL-Key Key IV (reserved)",
- hdr->key_iv, 16);
- }
-
- if (!is_zero(hdr->key_id, 8)) {
- wpa_printf(MSG_INFO, "EAPOL-Key with non-zero Key ID "
- "(reserved) field from " MACSTR, MAC2STR(src));
- wpa_hexdump(MSG_INFO, "EAPOL-Key Key ID (reserved)",
- hdr->key_id, 8);
- }
-
- if (hdr->key_rsc[6] || hdr->key_rsc[7]) {
- wpa_printf(MSG_INFO, "EAPOL-Key with non-zero Key RSC octets "
- "(last two are unused)" MACSTR, MAC2STR(src));
- }
-
- if (key_info & (WPA_KEY_INFO_ERROR | WPA_KEY_INFO_REQUEST))
- return;
-
- if (key_info & WPA_KEY_INFO_SMK_MESSAGE)
- return;
-
- if (key_info & WPA_KEY_INFO_KEY_TYPE) {
- /* 4-Way Handshake */
- switch (key_info & (WPA_KEY_INFO_SECURE |
- WPA_KEY_INFO_MIC |
- WPA_KEY_INFO_ACK |
- WPA_KEY_INFO_INSTALL)) {
- case WPA_KEY_INFO_ACK:
- rx_data_eapol_key_1_of_4(wt, dst, src, data, len);
- break;
- case WPA_KEY_INFO_MIC:
- if (key_data_length == 0)
- rx_data_eapol_key_4_of_4(wt, dst, src, data,
- len);
- else
- rx_data_eapol_key_2_of_4(wt, dst, src, data,
- len);
- break;
- case WPA_KEY_INFO_MIC | WPA_KEY_INFO_ACK |
- WPA_KEY_INFO_INSTALL:
- /* WPA does not include Secure bit in 3/4 */
- rx_data_eapol_key_3_of_4(wt, dst, src, data, len);
- break;
- case WPA_KEY_INFO_SECURE | WPA_KEY_INFO_MIC |
- WPA_KEY_INFO_ACK | WPA_KEY_INFO_INSTALL:
- rx_data_eapol_key_3_of_4(wt, dst, src, data, len);
- break;
- case WPA_KEY_INFO_SECURE | WPA_KEY_INFO_MIC:
- rx_data_eapol_key_4_of_4(wt, dst, src, data, len);
- break;
- default:
- wpa_printf(MSG_DEBUG, "Unsupported EAPOL-Key frame");
- break;
- }
- } else {
- /* Group Key Handshake */
- switch (key_info & (WPA_KEY_INFO_SECURE |
- WPA_KEY_INFO_MIC |
- WPA_KEY_INFO_ACK)) {
- case WPA_KEY_INFO_SECURE | WPA_KEY_INFO_MIC |
- WPA_KEY_INFO_ACK:
- rx_data_eapol_key_1_of_2(wt, dst, src, data, len);
- break;
- case WPA_KEY_INFO_SECURE | WPA_KEY_INFO_MIC:
- rx_data_eapol_key_2_of_2(wt, dst, src, data, len);
- break;
- default:
- wpa_printf(MSG_DEBUG, "Unsupported EAPOL-Key frame");
- break;
+ struct wlantest_ptk *ptk;
+ u8 *decrypted;
+ int prev_level = wpa_debug_level;
+
+ wpa_debug_level = MSG_WARNING;
+ dl_list_for_each(ptk, &wt->ptk, struct wlantest_ptk, list) {
+ decrypted = try_ptk(pairwise_cipher, &ptk->ptk, hdr,
+ data, data_len, decrypted_len);
+ if (decrypted) {
+ wpa_debug_level = prev_level;
+ add_note(wt, MSG_DEBUG,
+ "Found PTK match from list of all known PTKs");
+ write_decrypted_note(wt, decrypted, ptk->ptk.tk,
+ ptk->ptk.tk_len, keyid);
+ return decrypted;
}
}
-}
-
-
-static void rx_data_eapol(struct wlantest *wt, const u8 *dst, const u8 *src,
- const u8 *data, size_t len, int prot)
-{
- const struct ieee802_1x_hdr *hdr;
- u16 length;
- const u8 *p;
-
- wpa_hexdump(MSG_EXCESSIVE, "EAPOL", data, len);
- if (len < sizeof(*hdr)) {
- wpa_printf(MSG_INFO, "Too short EAPOL frame from " MACSTR,
- MAC2STR(src));
- return;
- }
-
- hdr = (const struct ieee802_1x_hdr *) data;
- length = be_to_host16(hdr->length);
- wpa_printf(MSG_DEBUG, "RX EAPOL: " MACSTR " -> " MACSTR "%s ver=%u "
- "type=%u len=%u",
- MAC2STR(src), MAC2STR(dst), prot ? " Prot" : "",
- hdr->version, hdr->type, length);
- if (hdr->version < 1 || hdr->version > 3) {
- wpa_printf(MSG_INFO, "Unexpected EAPOL version %u from "
- MACSTR, hdr->version, MAC2STR(src));
- }
- if (sizeof(*hdr) + length > len) {
- wpa_printf(MSG_INFO, "Truncated EAPOL frame from " MACSTR,
- MAC2STR(src));
- return;
- }
+ wpa_debug_level = prev_level;
- if (sizeof(*hdr) + length < len) {
- wpa_printf(MSG_INFO, "EAPOL frame with %d extra bytes",
- (int) (len - sizeof(*hdr) - length));
- }
- p = (const u8 *) (hdr + 1);
-
- switch (hdr->type) {
- case IEEE802_1X_TYPE_EAP_PACKET:
- wpa_hexdump(MSG_MSGDUMP, "EAPOL - EAP packet", p, length);
- break;
- case IEEE802_1X_TYPE_EAPOL_START:
- wpa_hexdump(MSG_MSGDUMP, "EAPOL-Start", p, length);
- break;
- case IEEE802_1X_TYPE_EAPOL_LOGOFF:
- wpa_hexdump(MSG_MSGDUMP, "EAPOL-Logoff", p, length);
- break;
- case IEEE802_1X_TYPE_EAPOL_KEY:
- rx_data_eapol_key(wt, dst, src, data, sizeof(*hdr) + length,
- prot);
- break;
- case IEEE802_1X_TYPE_EAPOL_ENCAPSULATED_ASF_ALERT:
- wpa_hexdump(MSG_MSGDUMP, "EAPOL - Encapsulated ASF alert",
- p, length);
- break;
- default:
- wpa_hexdump(MSG_MSGDUMP, "Unknown EAPOL payload", p, length);
- break;
- }
-}
-
-
-static void rx_data_eth(struct wlantest *wt, const u8 *dst, const u8 *src,
- u16 ethertype, const u8 *data, size_t len, int prot)
-{
- if (ethertype == ETH_P_PAE)
- rx_data_eapol(wt, dst, src, data, len, prot);
+ return NULL;
}
-static void rx_data_process(struct wlantest *wt, const u8 *dst, const u8 *src,
- const u8 *data, size_t len, int prot)
+static void check_plaintext_prot(struct wlantest *wt,
+ const struct ieee80211_hdr *hdr,
+ const u8 *data, size_t len)
{
- if (len == 0)
- return;
-
- if (len >= 8 && os_memcmp(data, "\xaa\xaa\x03\x00\x00\x00", 6) == 0) {
- rx_data_eth(wt, dst, src, WPA_GET_BE16(data + 6),
- data + 8, len - 8, prot);
+ if (len < 8 + 3 || data[8] != 0xaa || data[9] != 0xaa ||
+ data[10] != 0x03)
return;
- }
- wpa_hexdump(MSG_DEBUG, "Unrecognized LLC", data, len > 8 ? 8 : len);
+ add_note(wt, MSG_DEBUG,
+ "Plaintext payload in protected frame");
+ wpa_printf(MSG_INFO, "Plaintext payload in protected frame #%u: A2="
+ MACSTR " seq=%u",
+ wt->frame_num, MAC2STR(hdr->addr2),
+ WLAN_GET_SEQ_SEQ(le_to_host16(hdr->seq_ctrl)));
}
static void rx_data_bss_prot_group(struct wlantest *wt,
const struct ieee80211_hdr *hdr,
+ size_t hdrlen,
const u8 *qos, const u8 *dst, const u8 *src,
const u8 *data, size_t len)
{
struct wlantest_bss *bss;
int keyid;
- u8 *decrypted;
+ u8 *decrypted = NULL;
size_t dlen;
u8 pn[6];
+ int replay = 0;
bss = bss_get(wt, hdr->addr2);
if (bss == NULL)
return;
if (len < 4) {
- wpa_printf(MSG_INFO, "Too short group addressed data frame");
+ add_note(wt, MSG_INFO, "Too short group addressed data frame");
return;
}
if (bss->group_cipher & (WPA_CIPHER_TKIP | WPA_CIPHER_CCMP) &&
!(data[3] & 0x20)) {
- wpa_printf(MSG_INFO, "Expected TKIP/CCMP frame from "
- MACSTR " did not have ExtIV bit set to 1",
- MAC2STR(bss->bssid));
- return;
+ add_note(wt, MSG_INFO, "Expected TKIP/CCMP frame from "
+ MACSTR " did not have ExtIV bit set to 1",
+ MAC2STR(bss->bssid));
+ return;
}
if (bss->group_cipher == WPA_CIPHER_TKIP) {
if (data[3] & 0x1f) {
- wpa_printf(MSG_INFO, "TKIP frame from " MACSTR " used "
- "non-zero reserved bit",
- MAC2STR(bss->bssid));
+ add_note(wt, MSG_INFO, "TKIP frame from " MACSTR
+ " used non-zero reserved bit",
+ MAC2STR(bss->bssid));
}
if (data[1] != ((data[0] | 0x20) & 0x7f)) {
- wpa_printf(MSG_INFO, "TKIP frame from " MACSTR " used "
- "incorrect WEPSeed[1] (was 0x%x, expected "
- "0x%x)",
- MAC2STR(bss->bssid), data[1],
- (data[0] | 0x20) & 0x7f);
+ add_note(wt, MSG_INFO, "TKIP frame from " MACSTR
+ " used incorrect WEPSeed[1] (was 0x%x, "
+ "expected 0x%x)",
+ MAC2STR(bss->bssid), data[1],
+ (data[0] | 0x20) & 0x7f);
}
} else if (bss->group_cipher == WPA_CIPHER_CCMP) {
if (data[2] != 0 || (data[3] & 0x1f) != 0) {
- wpa_printf(MSG_INFO, "CCMP frame from " MACSTR " used "
- "non-zero reserved bit",
- MAC2STR(bss->bssid));
+ add_note(wt, MSG_INFO, "CCMP frame from " MACSTR
+ " used non-zero reserved bit",
+ MAC2STR(bss->bssid));
}
}
+ check_plaintext_prot(wt, hdr, data, len);
keyid = data[3] >> 6;
- if (bss->gtk_len[keyid] == 0) {
- wpa_printf(MSG_MSGDUMP, "No GTK known to decrypt the frame "
- "(A2=" MACSTR " KeyID=%d)",
- MAC2STR(hdr->addr2), keyid);
+ if (bss->gtk_len[keyid] == 0 && bss->group_cipher != WPA_CIPHER_WEP40)
+ {
+ add_note(wt, MSG_MSGDUMP, "No GTK known to decrypt the frame "
+ "(A2=" MACSTR " KeyID=%d)",
+ MAC2STR(hdr->addr2), keyid);
return;
}
if (bss->group_cipher == WPA_CIPHER_TKIP)
tkip_get_pn(pn, data);
+ else if (bss->group_cipher == WPA_CIPHER_WEP40)
+ goto skip_replay_det;
else
ccmp_get_pn(pn, data);
if (os_memcmp(pn, bss->rsc[keyid], 6) <= 0) {
- wpa_printf(MSG_INFO, "CCMP/TKIP replay detected: SA=" MACSTR,
- MAC2STR(hdr->addr2));
+ u16 seq_ctrl = le_to_host16(hdr->seq_ctrl);
+ char pn_hex[6 * 2 + 1], rsc_hex[6 * 2 + 1];
+
+ wpa_snprintf_hex(pn_hex, sizeof(pn_hex), pn, 6);
+ wpa_snprintf_hex(rsc_hex, sizeof(rsc_hex), bss->rsc[keyid], 6);
+ add_note(wt, MSG_INFO, "replay detected: A1=" MACSTR
+ " A2=" MACSTR " A3=" MACSTR
+ " seq=%u frag=%u%s keyid=%d %s<=%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" : "",
+ keyid, pn_hex, rsc_hex);
wpa_hexdump(MSG_INFO, "RX PN", pn, 6);
wpa_hexdump(MSG_INFO, "RSC", bss->rsc[keyid], 6);
+ replay = 1;
}
+skip_replay_det:
if (bss->group_cipher == WPA_CIPHER_TKIP)
decrypted = tkip_decrypt(bss->gtk[keyid], hdr, data, len,
&dlen);
- else
+ else if (bss->group_cipher == WPA_CIPHER_WEP40)
+ decrypted = wep_decrypt(wt, hdr, data, len, &dlen);
+ else if (bss->group_cipher == WPA_CIPHER_CCMP)
decrypted = ccmp_decrypt(bss->gtk[keyid], hdr, data, len,
&dlen);
+ else if (bss->group_cipher == WPA_CIPHER_CCMP_256)
+ decrypted = ccmp_256_decrypt(bss->gtk[keyid], hdr, data, len,
+ &dlen);
+ else if (bss->group_cipher == WPA_CIPHER_GCMP ||
+ bss->group_cipher == WPA_CIPHER_GCMP_256)
+ decrypted = gcmp_decrypt(bss->gtk[keyid], bss->gtk_len[keyid],
+ hdr, data, len, &dlen);
+
if (decrypted) {
- rx_data_process(wt, dst, src, decrypted, dlen, 1);
- os_memcpy(bss->rsc[keyid], pn, 6);
- write_pcap_decrypted(wt, (const u8 *) hdr, 24 + (qos ? 2 : 0),
+ char gtk[65];
+
+ wpa_snprintf_hex(gtk, sizeof(gtk), bss->gtk[keyid],
+ bss->gtk_len[keyid]);
+ add_note(wt, MSG_EXCESSIVE, "GTK[%d] %s", keyid, gtk);
+ rx_data_process(wt, bss->bssid, NULL, dst, src, decrypted,
+ dlen, 1, NULL);
+ if (!replay)
+ os_memcpy(bss->rsc[keyid], pn, 6);
+ write_pcap_decrypted(wt, (const u8 *) hdr, hdrlen,
decrypted, dlen);
- }
+ } else
+ add_note(wt, MSG_DEBUG, "Failed to decrypt frame");
os_free(decrypted);
}
static void rx_data_bss_prot(struct wlantest *wt,
- const struct ieee80211_hdr *hdr, const u8 *qos,
- const u8 *dst, const u8 *src, const u8 *data,
- size_t len)
+ const struct ieee80211_hdr *hdr, size_t hdrlen,
+ const u8 *qos, const u8 *dst, const u8 *src,
+ const u8 *data, size_t len)
{
- struct wlantest_bss *bss;
- struct wlantest_sta *sta;
+ struct wlantest_bss *bss, *bss2;
+ struct wlantest_sta *sta, *sta2;
int keyid;
u16 fc = le_to_host16(hdr->frame_control);
- u8 *decrypted;
+ u8 *decrypted = NULL;
size_t dlen;
int tid;
- u8 pn[6], *rsc;
+ u8 pn[6], *rsc = NULL;
+ struct wlantest_tdls *tdls = NULL, *found;
+ const u8 *tk = NULL;
+ int ptk_iter_done = 0;
+ int try_ptk_iter = 0;
+ int replay = 0;
if (hdr->addr1[0] & 0x01) {
- rx_data_bss_prot_group(wt, hdr, qos, dst, src, data, len);
+ rx_data_bss_prot_group(wt, hdr, hdrlen, qos, dst, src,
+ data, len);
return;
}
- if (fc & WLAN_FC_TODS) {
+ if ((fc & (WLAN_FC_TODS | WLAN_FC_FROMDS)) ==
+ (WLAN_FC_TODS | WLAN_FC_FROMDS)) {
+ bss = bss_find(wt, hdr->addr1);
+ if (bss) {
+ sta = sta_find(bss, hdr->addr2);
+ if (sta) {
+ sta->counters[
+ WLANTEST_STA_COUNTER_PROT_DATA_TX]++;
+ }
+ if (!sta || !sta->ptk_set) {
+ bss2 = bss_find(wt, hdr->addr2);
+ if (bss2) {
+ sta2 = sta_find(bss2, hdr->addr1);
+ if (sta2 && (!sta || sta2->ptk_set)) {
+ bss = bss2;
+ sta = sta2;
+ }
+ }
+ }
+ } else {
+ bss = bss_find(wt, hdr->addr2);
+ if (!bss)
+ return;
+ sta = sta_find(bss, hdr->addr1);
+ }
+ } else if (fc & WLAN_FC_TODS) {
bss = bss_get(wt, hdr->addr1);
if (bss == NULL)
return;
sta = sta_get(bss, hdr->addr2);
- } else {
+ if (sta)
+ sta->counters[WLANTEST_STA_COUNTER_PROT_DATA_TX]++;
+ } else if (fc & WLAN_FC_FROMDS) {
bss = bss_get(wt, hdr->addr2);
if (bss == NULL)
return;
sta = sta_get(bss, hdr->addr1);
+ } else {
+ bss = bss_get(wt, hdr->addr3);
+ if (bss == NULL)
+ return;
+ sta = sta_find(bss, hdr->addr2);
+ sta2 = sta_find(bss, hdr->addr1);
+ if (sta == NULL || sta2 == NULL)
+ return;
+ found = NULL;
+ dl_list_for_each(tdls, &bss->tdls, struct wlantest_tdls, list)
+ {
+ if ((tdls->init == sta && tdls->resp == sta2) ||
+ (tdls->init == sta2 && tdls->resp == sta)) {
+ found = tdls;
+ if (tdls->link_up)
+ break;
+ }
+ }
+ if (found) {
+ if (!found->link_up)
+ add_note(wt, MSG_DEBUG,
+ "TDLS: Link not up, but Data "
+ "frame seen");
+ tk = found->tpk.tk;
+ tdls = found;
+ }
}
- if (sta == NULL || !sta->ptk_set) {
- wpa_printf(MSG_MSGDUMP, "No PTK known to decrypt the frame");
- return;
+ check_plaintext_prot(wt, hdr, data, len);
+ if ((sta == NULL ||
+ (!sta->ptk_set && sta->pairwise_cipher != WPA_CIPHER_WEP40)) &&
+ tk == NULL) {
+ add_note(wt, MSG_MSGDUMP, "No PTK known to decrypt the frame");
+ if (dl_list_empty(&wt->ptk)) {
+ if (len >= 4 && sta) {
+ keyid = data[3] >> 6;
+ goto check_zero_tk;
+ }
+ return;
+ }
+
+ try_ptk_iter = 1;
}
if (len < 4) {
- wpa_printf(MSG_INFO, "Too short encrypted data frame");
+ add_note(wt, MSG_INFO, "Too short encrypted data frame");
return;
}
+ if (sta == NULL)
+ return;
if (sta->pairwise_cipher & (WPA_CIPHER_TKIP | WPA_CIPHER_CCMP) &&
!(data[3] & 0x20)) {
- wpa_printf(MSG_INFO, "Expected TKIP/CCMP frame from "
- MACSTR " did not have ExtIV bit set to 1",
- MAC2STR(src));
- return;
+ add_note(wt, MSG_INFO, "Expected TKIP/CCMP frame from "
+ MACSTR " did not have ExtIV bit set to 1",
+ MAC2STR(src));
+ return;
}
- if (sta->pairwise_cipher == WPA_CIPHER_TKIP) {
+ if (tk == NULL && sta->pairwise_cipher == WPA_CIPHER_TKIP) {
if (data[3] & 0x1f) {
- wpa_printf(MSG_INFO, "TKIP frame from " MACSTR " used "
- "non-zero reserved bit",
- MAC2STR(hdr->addr2));
+ add_note(wt, MSG_INFO, "TKIP frame from " MACSTR
+ " used non-zero reserved bit",
+ MAC2STR(hdr->addr2));
}
if (data[1] != ((data[0] | 0x20) & 0x7f)) {
- wpa_printf(MSG_INFO, "TKIP frame from " MACSTR " used "
- "incorrect WEPSeed[1] (was 0x%x, expected "
- "0x%x)",
- MAC2STR(hdr->addr2), data[1],
- (data[0] | 0x20) & 0x7f);
+ add_note(wt, MSG_INFO, "TKIP frame from " MACSTR
+ " used incorrect WEPSeed[1] (was 0x%x, "
+ "expected 0x%x)",
+ MAC2STR(hdr->addr2), data[1],
+ (data[0] | 0x20) & 0x7f);
}
- } else if (sta->pairwise_cipher == WPA_CIPHER_CCMP) {
+ } else if (tk || sta->pairwise_cipher == WPA_CIPHER_CCMP) {
if (data[2] != 0 || (data[3] & 0x1f) != 0) {
- wpa_printf(MSG_INFO, "CCMP frame from " MACSTR " used "
- "non-zero reserved bit",
- MAC2STR(hdr->addr2));
+ add_note(wt, MSG_INFO, "CCMP frame from " MACSTR
+ " used non-zero reserved bit",
+ MAC2STR(hdr->addr2));
}
}
keyid = data[3] >> 6;
- if (keyid != 0) {
- wpa_printf(MSG_INFO, "Unexpected non-zero KeyID %d in "
- "individually addressed Data frame from " MACSTR,
- keyid, MAC2STR(hdr->addr2));
+ if (keyid != 0 &&
+ (!(sta->rsn_capab & WPA_CAPABILITY_EXT_KEY_ID_FOR_UNICAST) ||
+ !(bss->rsn_capab & WPA_CAPABILITY_EXT_KEY_ID_FOR_UNICAST) ||
+ keyid != 1)) {
+ add_note(wt, MSG_INFO,
+ "Unexpected KeyID %d in individually addressed Data frame from "
+ MACSTR,
+ keyid, MAC2STR(hdr->addr2));
}
- if (qos)
+ if (qos) {
tid = qos[0] & 0x0f;
- else
+ if (fc & WLAN_FC_TODS)
+ sta->tx_tid[tid]++;
+ else
+ sta->rx_tid[tid]++;
+ } else {
tid = 0;
- if (fc & WLAN_FC_TODS)
+ if (fc & WLAN_FC_TODS)
+ sta->tx_tid[16]++;
+ else
+ sta->rx_tid[16]++;
+ }
+ if (tk) {
+ if (os_memcmp(hdr->addr2, tdls->init->addr, ETH_ALEN) == 0)
+ rsc = tdls->rsc_init[tid];
+ else
+ rsc = tdls->rsc_resp[tid];
+ } else if ((fc & (WLAN_FC_TODS | WLAN_FC_FROMDS)) ==
+ (WLAN_FC_TODS | WLAN_FC_FROMDS)) {
+ if (os_memcmp(sta->addr, hdr->addr2, ETH_ALEN) == 0)
+ rsc = sta->rsc_tods[tid];
+ else
+ rsc = sta->rsc_fromds[tid];
+ } else if (fc & WLAN_FC_TODS)
rsc = sta->rsc_tods[tid];
else
rsc = sta->rsc_fromds[tid];
- if (sta->pairwise_cipher == WPA_CIPHER_TKIP)
+ if (tk == NULL && sta->pairwise_cipher == WPA_CIPHER_TKIP)
tkip_get_pn(pn, data);
+ else if (sta->pairwise_cipher == WPA_CIPHER_WEP40)
+ goto skip_replay_det;
else
ccmp_get_pn(pn, data);
if (os_memcmp(pn, rsc, 6) <= 0) {
- wpa_printf(MSG_INFO, "CCMP/TKIP replay detected: SA=" MACSTR,
- MAC2STR(hdr->addr2));
+ u16 seq_ctrl = le_to_host16(hdr->seq_ctrl);
+ char pn_hex[6 * 2 + 1], rsc_hex[6 * 2 + 1];
+
+ wpa_snprintf_hex(pn_hex, sizeof(pn_hex), pn, 6);
+ wpa_snprintf_hex(rsc_hex, sizeof(rsc_hex), rsc, 6);
+ add_note(wt, MSG_INFO, "replay detected: A1=" MACSTR
+ " A2=" MACSTR " A3=" MACSTR
+ " seq=%u frag=%u%s keyid=%d tid=%d %s<=%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" : "",
+ keyid, tid, pn_hex, rsc_hex);
wpa_hexdump(MSG_INFO, "RX PN", pn, 6);
wpa_hexdump(MSG_INFO, "RSC", rsc, 6);
+ replay = 1;
+ }
+
+skip_replay_det:
+ if (tk) {
+ if (sta->pairwise_cipher == WPA_CIPHER_CCMP_256) {
+ decrypted = ccmp_256_decrypt(tk, hdr, data, len, &dlen);
+ write_decrypted_note(wt, decrypted, tk, 32, keyid);
+ } else if (sta->pairwise_cipher == WPA_CIPHER_GCMP ||
+ sta->pairwise_cipher == WPA_CIPHER_GCMP_256) {
+ decrypted = gcmp_decrypt(tk, sta->ptk.tk_len, hdr, data,
+ len, &dlen);
+ write_decrypted_note(wt, decrypted, tk, sta->ptk.tk_len,
+ keyid);
+ } else {
+ decrypted = ccmp_decrypt(tk, hdr, data, len, &dlen);
+ write_decrypted_note(wt, decrypted, tk, 16, keyid);
+ }
+ } else if (sta->pairwise_cipher == WPA_CIPHER_TKIP) {
+ decrypted = tkip_decrypt(sta->ptk.tk, hdr, data, len, &dlen);
+ write_decrypted_note(wt, decrypted, sta->ptk.tk, 32, keyid);
+ } else if (sta->pairwise_cipher == WPA_CIPHER_WEP40) {
+ decrypted = wep_decrypt(wt, hdr, data, len, &dlen);
+ } else if (sta->ptk_set) {
+ if (sta->pairwise_cipher == WPA_CIPHER_CCMP_256)
+ decrypted = ccmp_256_decrypt(sta->ptk.tk, hdr, data,
+ len, &dlen);
+ 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, data, len, &dlen);
+ else
+ decrypted = ccmp_decrypt(sta->ptk.tk, hdr, data, len,
+ &dlen);
+ write_decrypted_note(wt, decrypted, sta->ptk.tk,
+ sta->ptk.tk_len, keyid);
+ } else {
+ decrypted = try_all_ptk(wt, sta->pairwise_cipher, hdr, keyid,
+ data, len, &dlen);
+ ptk_iter_done = 1;
+ }
+ if (!decrypted && !ptk_iter_done) {
+ decrypted = try_all_ptk(wt, sta->pairwise_cipher, hdr, keyid,
+ data, len, &dlen);
+ if (decrypted) {
+ add_note(wt, MSG_DEBUG, "Current PTK did not work, but found a match from all known PTKs");
+ }
+ }
+check_zero_tk:
+ if (!decrypted) {
+ struct wpa_ptk zero_ptk;
+ int old_debug_level = wpa_debug_level;
+
+ os_memset(&zero_ptk, 0, sizeof(zero_ptk));
+ zero_ptk.tk_len = wpa_cipher_key_len(sta->pairwise_cipher);
+ wpa_debug_level = MSG_ERROR;
+ decrypted = try_ptk(sta->pairwise_cipher, &zero_ptk, hdr,
+ data, len, &dlen);
+ wpa_debug_level = old_debug_level;
+ if (decrypted) {
+ add_note(wt, MSG_DEBUG,
+ "Frame was encrypted with zero TK");
+ wpa_printf(MSG_INFO, "Zero TK used in frame #%u: A2="
+ MACSTR " seq=%u",
+ wt->frame_num, MAC2STR(hdr->addr2),
+ WLAN_GET_SEQ_SEQ(
+ le_to_host16(hdr->seq_ctrl)));
+ write_decrypted_note(wt, decrypted, zero_ptk.tk,
+ zero_ptk.tk_len, keyid);
+ }
}
-
- if (sta->pairwise_cipher == WPA_CIPHER_TKIP)
- decrypted = tkip_decrypt(sta->ptk.tk1, hdr, data, len, &dlen);
- else
- decrypted = ccmp_decrypt(sta->ptk.tk1, hdr, data, len, &dlen);
if (decrypted) {
- rx_data_process(wt, dst, src, decrypted, dlen, 1);
- os_memcpy(rsc, pn, 6);
- write_pcap_decrypted(wt, (const u8 *) hdr, 24 + (qos ? 2 : 0),
+ u16 fc = le_to_host16(hdr->frame_control);
+ const u8 *peer_addr = NULL;
+ if (!(fc & (WLAN_FC_FROMDS | WLAN_FC_TODS)))
+ peer_addr = hdr->addr1;
+ if (!replay && rsc)
+ os_memcpy(rsc, pn, 6);
+ rx_data_process(wt, bss->bssid, sta->addr, dst, src, decrypted,
+ dlen, 1, peer_addr);
+ write_pcap_decrypted(wt, (const u8 *) hdr, hdrlen,
decrypted, dlen);
+ } else {
+ if (!try_ptk_iter)
+ add_note(wt, MSG_DEBUG, "Failed to decrypt frame");
+
+ /* 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);
}
static void rx_data_bss(struct wlantest *wt, const struct ieee80211_hdr *hdr,
- const u8 *qos, const u8 *dst, const u8 *src,
- const u8 *data, size_t len)
+ size_t hdrlen, const u8 *qos, const u8 *dst,
+ const u8 *src, const u8 *data, size_t len)
{
u16 fc = le_to_host16(hdr->frame_control);
int prot = !!(fc & WLAN_FC_ISWEP);
}
if (prot)
- rx_data_bss_prot(wt, hdr, qos, dst, src, data, len);
+ rx_data_bss_prot(wt, hdr, hdrlen, qos, dst, src, data, len);
+ else {
+ const u8 *bssid, *sta_addr, *peer_addr;
+ struct wlantest_bss *bss;
+
+ if (fc & WLAN_FC_TODS) {
+ bssid = hdr->addr1;
+ sta_addr = hdr->addr2;
+ peer_addr = NULL;
+ } else if (fc & WLAN_FC_FROMDS) {
+ bssid = hdr->addr2;
+ sta_addr = hdr->addr1;
+ peer_addr = NULL;
+ } else {
+ bssid = hdr->addr3;
+ sta_addr = hdr->addr2;
+ peer_addr = hdr->addr1;
+ }
+
+ bss = bss_get(wt, bssid);
+ if (bss) {
+ struct wlantest_sta *sta = sta_get(bss, sta_addr);
+
+ if (sta) {
+ if (qos) {
+ int tid = qos[0] & 0x0f;
+ if (fc & WLAN_FC_TODS)
+ sta->tx_tid[tid]++;
+ else
+ sta->rx_tid[tid]++;
+ } else {
+ if (fc & WLAN_FC_TODS)
+ sta->tx_tid[16]++;
+ else
+ sta->rx_tid[16]++;
+ }
+ }
+ }
+
+ rx_data_process(wt, bssid, sta_addr, dst, src, data, len, 0,
+ peer_addr);
+ }
+}
+
+
+static struct wlantest_tdls * get_tdls(struct wlantest *wt, const u8 *bssid,
+ const u8 *sta1_addr,
+ const u8 *sta2_addr)
+{
+ struct wlantest_bss *bss;
+ struct wlantest_sta *sta1, *sta2;
+ struct wlantest_tdls *tdls, *found = NULL;
+
+ bss = bss_find(wt, bssid);
+ if (bss == NULL)
+ return NULL;
+ sta1 = sta_find(bss, sta1_addr);
+ if (sta1 == NULL)
+ return NULL;
+ sta2 = sta_find(bss, sta2_addr);
+ if (sta2 == NULL)
+ return NULL;
+
+ dl_list_for_each(tdls, &bss->tdls, struct wlantest_tdls, list) {
+ if ((tdls->init == sta1 && tdls->resp == sta2) ||
+ (tdls->init == sta2 && tdls->resp == sta1)) {
+ found = tdls;
+ if (tdls->link_up)
+ break;
+ }
+ }
+
+ return found;
+}
+
+
+static void add_direct_link(struct wlantest *wt, const u8 *bssid,
+ const u8 *sta1_addr, const u8 *sta2_addr)
+{
+ struct wlantest_tdls *tdls;
+
+ tdls = get_tdls(wt, bssid, sta1_addr, sta2_addr);
+ if (tdls == NULL)
+ return;
+
+ if (tdls->link_up)
+ tdls->counters[WLANTEST_TDLS_COUNTER_VALID_DIRECT_LINK]++;
else
- rx_data_process(wt, dst, src, data, len, 0);
+ tdls->counters[WLANTEST_TDLS_COUNTER_INVALID_DIRECT_LINK]++;
+}
+
+
+static void add_ap_path(struct wlantest *wt, const u8 *bssid,
+ const u8 *sta1_addr, const u8 *sta2_addr)
+{
+ struct wlantest_tdls *tdls;
+
+ tdls = get_tdls(wt, bssid, sta1_addr, sta2_addr);
+ if (tdls == NULL)
+ return;
+
+ if (tdls->link_up)
+ tdls->counters[WLANTEST_TDLS_COUNTER_INVALID_AP_PATH]++;
+ else
+ tdls->counters[WLANTEST_TDLS_COUNTER_VALID_AP_PATH]++;
}
fc & WLAN_FC_ISWEP ? " Prot" : "",
MAC2STR(hdr->addr1), MAC2STR(hdr->addr2),
MAC2STR(hdr->addr3));
+ add_direct_link(wt, hdr->addr3, hdr->addr1, hdr->addr2);
+ rx_data_bss(wt, hdr, hdrlen, qos, hdr->addr1, hdr->addr2,
+ data + hdrlen, len - hdrlen);
break;
case WLAN_FC_FROMDS:
wpa_printf(MSG_EXCESSIVE, "DATA %s%s%s FromDS DA=" MACSTR
fc & WLAN_FC_ISWEP ? " Prot" : "",
MAC2STR(hdr->addr1), MAC2STR(hdr->addr2),
MAC2STR(hdr->addr3));
- rx_data_bss(wt, hdr, qos, hdr->addr1, hdr->addr2,
+ add_ap_path(wt, hdr->addr2, hdr->addr1, hdr->addr3);
+ rx_data_bss(wt, hdr, hdrlen, qos, hdr->addr1, hdr->addr3,
data + hdrlen, len - hdrlen);
break;
case WLAN_FC_TODS:
fc & WLAN_FC_ISWEP ? " Prot" : "",
MAC2STR(hdr->addr1), MAC2STR(hdr->addr2),
MAC2STR(hdr->addr3));
- rx_data_bss(wt, hdr, qos, hdr->addr3, hdr->addr2,
+ add_ap_path(wt, hdr->addr1, hdr->addr3, hdr->addr2);
+ rx_data_bss(wt, hdr, hdrlen, qos, hdr->addr3, hdr->addr2,
data + hdrlen, len - hdrlen);
break;
case WLAN_FC_TODS | WLAN_FC_FROMDS:
MAC2STR(hdr->addr1), MAC2STR(hdr->addr2),
MAC2STR(hdr->addr3),
MAC2STR((const u8 *) (hdr + 1)));
+ rx_data_bss(wt, hdr, hdrlen, qos, hdr->addr1, hdr->addr2,
+ data + hdrlen, len - hdrlen);
break;
}
}
projects / thirdparty / hostap.git / blobdiff