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@@ -0,0 +1,989 @@
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+/*
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+ * Received Data frame processing for EAPOL messages
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+ * Copyright (c) 2010, Jouni Malinen <j@w1.fi>
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+ *
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+ * This program is free software; you can redistribute it and/or modify
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+ * it under the terms of the GNU General Public License version 2 as
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+ * published by the Free Software Foundation.
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+ *
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+ * Alternatively, this software may be distributed under the terms of BSD
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+ * license.
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+ *
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+ * See README and COPYING for more details.
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+ */
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+
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+#include "utils/includes.h"
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+
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+#include "utils/common.h"
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+#include "crypto/aes_wrap.h"
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+#include "crypto/crypto.h"
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+#include "common/defs.h"
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+#include "common/ieee802_11_defs.h"
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+#include "common/eapol_common.h"
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+#include "common/wpa_common.h"
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+#include "rsn_supp/wpa_ie.h"
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+#include "wlantest.h"
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+
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+
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+static int is_zero(const u8 *buf, size_t len)
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+{
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+ size_t i;
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+ for (i = 0; i < len; i++) {
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+ if (buf[i])
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+ return 0;
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+ }
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+ return 1;
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+}
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+
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+
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+static int check_mic(const u8 *kck, int ver, const u8 *data, size_t len)
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+{
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+ u8 *buf;
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+ int ret = -1;
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+ struct ieee802_1x_hdr *hdr;
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+ struct wpa_eapol_key *key;
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+ u8 rx_mic[16];
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+
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+ buf = os_malloc(len);
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+ if (buf == NULL)
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+ return -1;
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+ os_memcpy(buf, data, len);
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+ hdr = (struct ieee802_1x_hdr *) buf;
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+ key = (struct wpa_eapol_key *) (hdr + 1);
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+
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+ os_memcpy(rx_mic, key->key_mic, 16);
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+ os_memset(key->key_mic, 0, 16);
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+
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+ if (wpa_eapol_key_mic(kck, ver, buf, len, key->key_mic) == 0 &&
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+ os_memcmp(rx_mic, key->key_mic, 16) == 0)
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+ ret = 0;
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+
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+ os_free(buf);
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+
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+ return ret;
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+}
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+
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+
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+static void rx_data_eapol_key_1_of_4(struct wlantest *wt, const u8 *dst,
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+ const u8 *src, const u8 *data, size_t len)
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+{
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+ struct wlantest_bss *bss;
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+ struct wlantest_sta *sta;
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+ const struct ieee802_1x_hdr *eapol;
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+ const struct wpa_eapol_key *hdr;
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+
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+ wpa_printf(MSG_DEBUG, "EAPOL-Key 1/4 " MACSTR " -> " MACSTR,
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+ MAC2STR(src), MAC2STR(dst));
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+ bss = bss_get(wt, src);
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+ if (bss == NULL)
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+ return;
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+ sta = sta_get(bss, dst);
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+ if (sta == NULL)
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+ return;
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+
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+ eapol = (const struct ieee802_1x_hdr *) data;
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+ hdr = (const struct wpa_eapol_key *) (eapol + 1);
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+ if (is_zero(hdr->key_nonce, WPA_NONCE_LEN)) {
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+ wpa_printf(MSG_INFO, "EAPOL-Key 1/4 from " MACSTR " used "
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+ "zero nonce", MAC2STR(src));
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+ }
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+ if (!is_zero(hdr->key_rsc, 8)) {
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+ wpa_printf(MSG_INFO, "EAPOL-Key 1/4 from " MACSTR " used "
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+ "non-zero Key RSC", MAC2STR(src));
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+ }
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+ os_memcpy(sta->anonce, hdr->key_nonce, WPA_NONCE_LEN);
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+}
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+
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+
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+static int try_pmk(struct wlantest_bss *bss, struct wlantest_sta *sta,
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+ u16 ver, const u8 *data, size_t len,
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+ struct wlantest_pmk *pmk)
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+{
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+ struct wpa_ptk ptk;
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+ size_t ptk_len = sta->pairwise_cipher == WPA_CIPHER_TKIP ? 64 : 48;
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+ wpa_pmk_to_ptk(pmk->pmk, sizeof(pmk->pmk),
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+ "Pairwise key expansion",
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+ bss->bssid, sta->addr, sta->anonce, sta->snonce,
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+ (u8 *) &ptk, ptk_len,
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+ wpa_key_mgmt_sha256(sta->key_mgmt));
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+ if (check_mic(ptk.kck, ver, data, len) < 0)
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+ return -1;
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+
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+ wpa_printf(MSG_INFO, "Derived PTK for STA " MACSTR " BSSID " MACSTR,
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+ MAC2STR(sta->addr), MAC2STR(bss->bssid));
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+ sta->counters[WLANTEST_STA_COUNTER_PTK_LEARNED]++;
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+ os_memcpy(&sta->ptk, &ptk, sizeof(ptk));
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+ wpa_hexdump(MSG_DEBUG, "PTK:KCK", sta->ptk.kck, 16);
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+ wpa_hexdump(MSG_DEBUG, "PTK:KEK", sta->ptk.kek, 16);
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+ wpa_hexdump(MSG_DEBUG, "PTK:TK1", sta->ptk.tk1, 16);
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+ if (ptk_len > 48)
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+ wpa_hexdump(MSG_DEBUG, "PTK:TK2", sta->ptk.u.tk2, 16);
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+ sta->ptk_set = 1;
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+ os_memset(sta->rsc_tods, 0, sizeof(sta->rsc_tods));
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+ os_memset(sta->rsc_fromds, 0, sizeof(sta->rsc_fromds));
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+ return 0;
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+}
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+
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+
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+static void derive_ptk(struct wlantest *wt, struct wlantest_bss *bss,
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+ struct wlantest_sta *sta, u16 ver,
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+ const u8 *data, size_t len)
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+{
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+ struct wlantest_pmk *pmk;
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+
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+ dl_list_for_each(pmk, &bss->pmk, struct wlantest_pmk, list) {
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+ if (try_pmk(bss, sta, ver, data, len, pmk) == 0)
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+ return;
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+ }
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+
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+ dl_list_for_each(pmk, &wt->pmk, struct wlantest_pmk, list) {
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+ if (try_pmk(bss, sta, ver, data, len, pmk) == 0)
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+ return;
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+ }
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+}
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+
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+
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+static void rx_data_eapol_key_2_of_4(struct wlantest *wt, const u8 *dst,
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+ const u8 *src, const u8 *data, size_t len)
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+{
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+ struct wlantest_bss *bss;
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+ struct wlantest_sta *sta;
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+ const struct ieee802_1x_hdr *eapol;
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+ const struct wpa_eapol_key *hdr;
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+ const u8 *key_data;
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+ u16 key_info, key_data_len;
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+ struct wpa_eapol_ie_parse ie;
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+
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+ wpa_printf(MSG_DEBUG, "EAPOL-Key 2/4 " MACSTR " -> " MACSTR,
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+ MAC2STR(src), MAC2STR(dst));
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+ bss = bss_get(wt, dst);
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+ if (bss == NULL)
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+ return;
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+ sta = sta_get(bss, src);
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+ if (sta == NULL)
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+ return;
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+
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+ eapol = (const struct ieee802_1x_hdr *) data;
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+ hdr = (const struct wpa_eapol_key *) (eapol + 1);
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+ if (is_zero(hdr->key_nonce, WPA_NONCE_LEN)) {
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+ wpa_printf(MSG_INFO, "EAPOL-Key 2/4 from " MACSTR " used "
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+ "zero nonce", MAC2STR(src));
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+ }
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+ if (!is_zero(hdr->key_rsc, 8)) {
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+ wpa_printf(MSG_INFO, "EAPOL-Key 2/4 from " MACSTR " used "
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+ "non-zero Key RSC", MAC2STR(src));
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+ }
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+ os_memcpy(sta->snonce, hdr->key_nonce, WPA_NONCE_LEN);
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+ key_info = WPA_GET_BE16(hdr->key_info);
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+ key_data_len = WPA_GET_BE16(hdr->key_data_length);
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+ derive_ptk(wt, bss, sta, key_info & WPA_KEY_INFO_TYPE_MASK, data, len);
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+
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+ if (!sta->ptk_set) {
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+ wpa_printf(MSG_DEBUG, "No PTK known to process EAPOL-Key 2/4");
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+ return;
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+ }
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+
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+ if (check_mic(sta->ptk.kck, key_info & WPA_KEY_INFO_TYPE_MASK,
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+ data, len) < 0) {
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+ wpa_printf(MSG_INFO, "Mismatch in EAPOL-Key 2/4 MIC");
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+ return;
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+ }
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+ wpa_printf(MSG_DEBUG, "Valid MIC found in EAPOL-Key 2/4");
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+
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+ key_data = (const u8 *) (hdr + 1);
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+
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+ if (wpa_supplicant_parse_ies(key_data, key_data_len, &ie) < 0) {
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+ wpa_printf(MSG_INFO, "Failed to parse EAPOL-Key Key Data");
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+ return;
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+ }
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+
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+ if (ie.wpa_ie) {
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+ wpa_hexdump(MSG_MSGDUMP, "EAPOL-Key Key Data - WPA IE",
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+ ie.wpa_ie, ie.wpa_ie_len);
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+ if (os_memcmp(ie.wpa_ie, sta->rsnie, ie.wpa_ie_len) != 0) {
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+ wpa_printf(MSG_INFO, "Mismatch in WPA IE between "
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+ "EAPOL-Key 2/4 and (Re)Association "
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+ "Request from " MACSTR, MAC2STR(sta->addr));
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+ wpa_hexdump(MSG_INFO, "WPA IE in EAPOL-Key",
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+ ie.wpa_ie, ie.wpa_ie_len);
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+ wpa_hexdump(MSG_INFO, "WPA IE in (Re)Association "
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+ "Request",
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+ sta->rsnie,
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+ sta->rsnie[0] ? 2 + sta->rsnie[1] : 0);
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+ }
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+ }
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+
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+ if (ie.rsn_ie) {
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+ wpa_hexdump(MSG_MSGDUMP, "EAPOL-Key Key Data - RSN IE",
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+ ie.rsn_ie, ie.rsn_ie_len);
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+ if (os_memcmp(ie.rsn_ie, sta->rsnie, ie.rsn_ie_len) != 0) {
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+ wpa_printf(MSG_INFO, "Mismatch in RSN IE between "
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+ "EAPOL-Key 2/4 and (Re)Association "
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+ "Request from " MACSTR, MAC2STR(sta->addr));
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+ wpa_hexdump(MSG_INFO, "RSN IE in EAPOL-Key",
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+ ie.rsn_ie, ie.rsn_ie_len);
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+ wpa_hexdump(MSG_INFO, "RSN IE in (Re)Association "
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+ "Request",
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+ sta->rsnie,
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+ sta->rsnie[0] ? 2 + sta->rsnie[1] : 0);
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+ }
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+ }
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+}
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+
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+
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+static u8 * decrypt_eapol_key_data_rc4(const u8 *kek,
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+ const struct wpa_eapol_key *hdr,
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+ size_t *len)
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+{
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+ u8 ek[32], *buf;
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+ u16 keydatalen = WPA_GET_BE16(hdr->key_data_length);
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+
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+ buf = os_malloc(keydatalen);
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+ if (buf == NULL)
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+ return NULL;
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+
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+ os_memcpy(ek, hdr->key_iv, 16);
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+ os_memcpy(ek + 16, kek, 16);
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+ os_memcpy(buf, hdr + 1, keydatalen);
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+ if (rc4_skip(ek, 32, 256, buf, keydatalen)) {
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+ wpa_printf(MSG_INFO, "RC4 failed");
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+ os_free(buf);
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+ return NULL;
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+ }
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+
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+ *len = keydatalen;
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+ return buf;
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+}
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+
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+
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+static u8 * decrypt_eapol_key_data_aes(const u8 *kek,
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+ const struct wpa_eapol_key *hdr,
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+ size_t *len)
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+{
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+ u8 *buf;
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+ u16 keydatalen = WPA_GET_BE16(hdr->key_data_length);
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+
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+ if (keydatalen % 8) {
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+ wpa_printf(MSG_INFO, "Unsupported AES-WRAP len %d",
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+ keydatalen);
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+ return NULL;
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+ }
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+ keydatalen -= 8; /* AES-WRAP adds 8 bytes */
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+ buf = os_malloc(keydatalen);
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+ if (buf == NULL)
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+ return NULL;
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+ if (aes_unwrap(kek, keydatalen / 8, (u8 *) (hdr + 1), buf)) {
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+ os_free(buf);
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+ wpa_printf(MSG_INFO, "AES unwrap failed - "
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+ "could not decrypt EAPOL-Key key data");
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+ return NULL;
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+ }
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+
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+ *len = keydatalen;
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+ return buf;
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+}
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+
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+
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+static u8 * decrypt_eapol_key_data(const u8 *kek, u16 ver,
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+ const struct wpa_eapol_key *hdr,
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+ size_t *len)
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+{
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+ switch (ver) {
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+ case WPA_KEY_INFO_TYPE_HMAC_MD5_RC4:
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+ return decrypt_eapol_key_data_rc4(kek, hdr, len);
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+ case WPA_KEY_INFO_TYPE_HMAC_SHA1_AES:
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+ case WPA_KEY_INFO_TYPE_AES_128_CMAC:
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+ return decrypt_eapol_key_data_aes(kek, hdr, len);
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+ default:
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+ wpa_printf(MSG_INFO, "Unsupported EAPOL-Key Key Descriptor "
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+ "Version %u", ver);
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+ return NULL;
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+ }
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+}
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+
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+
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+static void learn_kde_keys(struct wlantest_bss *bss, const u8 *buf, size_t len,
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+ const u8 *rsc)
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+{
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+ struct wpa_eapol_ie_parse ie;
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+
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+ if (wpa_supplicant_parse_ies(buf, len, &ie) < 0) {
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+ wpa_printf(MSG_INFO, "Failed to parse EAPOL-Key Key Data");
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+ return;
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+ }
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+
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+ if (ie.wpa_ie) {
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+ wpa_hexdump(MSG_MSGDUMP, "EAPOL-Key Key Data - WPA IE",
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+ ie.wpa_ie, ie.wpa_ie_len);
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+ }
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+
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+ if (ie.rsn_ie) {
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+ wpa_hexdump(MSG_MSGDUMP, "EAPOL-Key Key Data - RSN IE",
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+ ie.rsn_ie, ie.rsn_ie_len);
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+ }
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+
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+ if (ie.gtk) {
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+ wpa_hexdump(MSG_MSGDUMP, "EAPOL-Key Key Data - GTK KDE",
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+ ie.gtk, ie.gtk_len);
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+ if (ie.gtk_len >= 2 && ie.gtk_len <= 2 + 32) {
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+ int id;
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+ id = ie.gtk[0] & 0x03;
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+ wpa_printf(MSG_DEBUG, "GTK KeyID=%u tx=%u",
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+ id, !!(ie.gtk[0] & 0x04));
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+ if ((ie.gtk[0] & 0xf8) || ie.gtk[1])
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+ wpa_printf(MSG_INFO, "GTK KDE: Reserved field "
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+ "set: %02x %02x",
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+ ie.gtk[0], ie.gtk[1]);
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+ wpa_hexdump(MSG_DEBUG, "GTK", ie.gtk + 2,
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+ ie.gtk_len - 2);
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+ bss->gtk_len[id] = ie.gtk_len - 2;
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+ os_memcpy(bss->gtk[id], ie.gtk + 2, ie.gtk_len - 2);
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+ bss->rsc[id][0] = rsc[5];
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+ bss->rsc[id][1] = rsc[4];
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+ bss->rsc[id][2] = rsc[3];
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+ bss->rsc[id][3] = rsc[2];
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+ bss->rsc[id][4] = rsc[1];
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+ bss->rsc[id][5] = rsc[0];
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+ bss->gtk_idx = id;
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+ wpa_hexdump(MSG_DEBUG, "RSC", bss->rsc[id], 6);
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+ } else {
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+ wpa_printf(MSG_INFO, "Invalid GTK KDE length %u",
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+ (unsigned) ie.gtk_len);
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+ }
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+ }
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+
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+ if (ie.igtk) {
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+ wpa_hexdump(MSG_MSGDUMP, "EAPOL-Key Key Data - IGTK KDE",
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+ ie.igtk, ie.igtk_len);
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+ 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 {
|
|
|
+ const u8 *ipn;
|
|
|
+ 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;
|
|
|
+ ipn = ie.igtk + 2;
|
|
|
+ bss->ipn[id][0] = ipn[5];
|
|
|
+ bss->ipn[id][1] = ipn[4];
|
|
|
+ bss->ipn[id][2] = ipn[3];
|
|
|
+ bss->ipn[id][3] = ipn[2];
|
|
|
+ bss->ipn[id][4] = ipn[1];
|
|
|
+ bss->ipn[id][5] = ipn[0];
|
|
|
+ bss->igtk_idx = id;
|
|
|
+ }
|
|
|
+ } else {
|
|
|
+ wpa_printf(MSG_INFO, "Invalid IGTK KDE length %u",
|
|
|
+ (unsigned) ie.igtk_len);
|
|
|
+ }
|
|
|
+ }
|
|
|
+}
|
|
|
+
|
|
|
+
|
|
|
+static void rx_data_eapol_key_3_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;
|
|
|
+ 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");
|
|
|
+ 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);
|
|
|
+ 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);
|
|
|
+}
|
|
|
+
|
|
|
+
|
|
|
+static void rx_data_eapol_key_4_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;
|
|
|
+ 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;
|
|
|
+
|
|
|
+ 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");
|
|
|
+ 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");
|
|
|
+}
|
|
|
+
|
|
|
+
|
|
|
+static void rx_data_eapol_key_1_of_2(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, 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);
|
|
|
+}
|
|
|
+
|
|
|
+
|
|
|
+static void rx_data_eapol_key_2_of_2(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;
|
|
|
+ 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;
|
|
|
+ }
|
|
|
+ }
|
|
|
+}
|
|
|
+
|
|
|
+
|
|
|
+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;
|
|
|
+ }
|
|
|
+
|
|
|
+ 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;
|
|
|
+ }
|
|
|
+}
|
Jouni Malinen