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-rw-r--r--wlantest/rx_tdls.c568
1 files changed, 0 insertions, 568 deletions
diff --git a/wlantest/rx_tdls.c b/wlantest/rx_tdls.c
deleted file mode 100644
index 08a29a5..0000000
--- a/wlantest/rx_tdls.c
+++ /dev/null
@@ -1,568 +0,0 @@
-/*
- * Received Data frame processing for TDLS packets
- * Copyright (c) 2010, Jouni Malinen <j@w1.fi>
- *
- * This software may be distributed under the terms of the BSD license.
- * See README for more details.
- */
-
-#include "utils/includes.h"
-
-#include "utils/common.h"
-#include "crypto/sha256.h"
-#include "crypto/crypto.h"
-#include "crypto/aes_wrap.h"
-#include "common/ieee802_11_defs.h"
-#include "common/ieee802_11_common.h"
-#include "wlantest.h"
-
-
-static struct wlantest_tdls * get_tdls(struct wlantest *wt, const u8 *linkid,
- int create_new, const u8 *bssid)
-{
- struct wlantest_bss *bss;
- struct wlantest_sta *init, *resp;
- struct wlantest_tdls *tdls;
-
- bss = bss_find(wt, linkid);
- if (bss == NULL && bssid) {
- bss = bss_find(wt, bssid);
- if (bss)
- wpa_printf(MSG_INFO, "TDLS: Incorrect BSSID " MACSTR
- " in LinkId?! (init=" MACSTR " resp="
- MACSTR ")",
- MAC2STR(linkid), MAC2STR(linkid + ETH_ALEN),
- MAC2STR(linkid + 2 * ETH_ALEN));
- }
- if (bss == NULL)
- return NULL;
-
- init = sta_find(bss, linkid + ETH_ALEN);
- if (init == NULL)
- return NULL;
-
- resp = sta_find(bss, linkid + 2 * ETH_ALEN);
- if (resp == NULL)
- return NULL;
-
- dl_list_for_each(tdls, &bss->tdls, struct wlantest_tdls, list) {
- if (tdls->init == init && tdls->resp == resp)
- return tdls;
- }
-
- if (!create_new)
- return NULL;
-
- tdls = os_zalloc(sizeof(*tdls));
- if (tdls == NULL)
- return NULL;
- tdls->init = init;
- tdls->resp = resp;
- dl_list_add(&bss->tdls, &tdls->list);
- return tdls;
-}
-
-
-static int tdls_derive_tpk(struct wlantest_tdls *tdls, const u8 *bssid,
- const u8 *ftie, u8 ftie_len)
-{
- const struct rsn_ftie *f;
- u8 key_input[SHA256_MAC_LEN];
- const u8 *nonce[2];
- size_t len[2];
- u8 data[3 * ETH_ALEN];
-
- if (ftie == NULL || ftie_len < sizeof(struct rsn_ftie))
- return 0;
-
- f = (const struct rsn_ftie *) ftie;
- wpa_hexdump(MSG_DEBUG, "TDLS ANonce", f->anonce, WPA_NONCE_LEN);
- wpa_hexdump(MSG_DEBUG, "TDLS SNonce", f->snonce, WPA_NONCE_LEN);
-
- /*
- * IEEE Std 802.11z-2010 8.5.9.1:
- * TPK-Key-Input = SHA-256(min(SNonce, ANonce) || max(SNonce, ANonce))
- */
- len[0] = WPA_NONCE_LEN;
- len[1] = WPA_NONCE_LEN;
- if (os_memcmp(f->anonce, f->snonce, WPA_NONCE_LEN) < 0) {
- nonce[0] = f->anonce;
- nonce[1] = f->snonce;
- } else {
- nonce[0] = f->snonce;
- nonce[1] = f->anonce;
- }
- sha256_vector(2, nonce, len, key_input);
- wpa_hexdump_key(MSG_DEBUG, "TDLS: TPK-Key-Input",
- key_input, SHA256_MAC_LEN);
-
- /*
- * TPK-Key-Data = KDF-N_KEY(TPK-Key-Input, "TDLS PMK",
- * min(MAC_I, MAC_R) || max(MAC_I, MAC_R) || BSSID || N_KEY)
- * TODO: is N_KEY really included in KDF Context and if so, in which
- * presentation format (little endian 16-bit?) is it used? It gets
- * added by the KDF anyway..
- */
-
- if (os_memcmp(tdls->init->addr, tdls->resp->addr, ETH_ALEN) < 0) {
- os_memcpy(data, tdls->init->addr, ETH_ALEN);
- os_memcpy(data + ETH_ALEN, tdls->resp->addr, ETH_ALEN);
- } else {
- os_memcpy(data, tdls->resp->addr, ETH_ALEN);
- os_memcpy(data + ETH_ALEN, tdls->init->addr, ETH_ALEN);
- }
- os_memcpy(data + 2 * ETH_ALEN, bssid, ETH_ALEN);
- wpa_hexdump(MSG_DEBUG, "TDLS: KDF Context", data, sizeof(data));
-
- sha256_prf(key_input, SHA256_MAC_LEN, "TDLS PMK", data, sizeof(data),
- (u8 *) &tdls->tpk, sizeof(tdls->tpk));
- wpa_hexdump_key(MSG_DEBUG, "TDLS: TPK-KCK",
- tdls->tpk.kck, sizeof(tdls->tpk.kck));
- wpa_hexdump_key(MSG_DEBUG, "TDLS: TPK-TK",
- tdls->tpk.tk, sizeof(tdls->tpk.tk));
-
- return 1;
-}
-
-
-static int tdls_verify_mic(struct wlantest_tdls *tdls, u8 trans_seq,
- struct ieee802_11_elems *elems)
-{
- u8 *buf, *pos;
- int len;
- u8 mic[16];
- int ret;
- const struct rsn_ftie *rx_ftie;
- struct rsn_ftie *tmp_ftie;
-
- if (elems->link_id == NULL || elems->rsn_ie == NULL ||
- elems->timeout_int == NULL || elems->ftie == NULL)
- return -1;
-
- len = 2 * ETH_ALEN + 1 + 2 + 18 + 2 + elems->rsn_ie_len +
- 2 + elems->timeout_int_len + 2 + elems->ftie_len;
-
- buf = os_zalloc(len);
- if (buf == NULL)
- return -1;
-
- pos = buf;
- /* 1) TDLS initiator STA MAC address */
- os_memcpy(pos, elems->link_id + ETH_ALEN, ETH_ALEN);
- pos += ETH_ALEN;
- /* 2) TDLS responder STA MAC address */
- os_memcpy(pos, elems->link_id + 2 * ETH_ALEN, ETH_ALEN);
- pos += ETH_ALEN;
- /* 3) Transaction Sequence number */
- *pos++ = trans_seq;
- /* 4) Link Identifier IE */
- os_memcpy(pos, elems->link_id - 2, 2 + 18);
- pos += 2 + 18;
- /* 5) RSN IE */
- os_memcpy(pos, elems->rsn_ie - 2, 2 + elems->rsn_ie_len);
- pos += 2 + elems->rsn_ie_len;
- /* 6) Timeout Interval IE */
- os_memcpy(pos, elems->timeout_int - 2, 2 + elems->timeout_int_len);
- pos += 2 + elems->timeout_int_len;
- /* 7) FTIE, with the MIC field of the FTIE set to 0 */
- os_memcpy(pos, elems->ftie - 2, 2 + elems->ftie_len);
- pos += 2;
- tmp_ftie = (struct rsn_ftie *) pos;
- os_memset(tmp_ftie->mic, 0, 16);
- pos += elems->ftie_len;
-
- wpa_hexdump(MSG_DEBUG, "TDLS: Data for FTIE MIC", buf, pos - buf);
- wpa_hexdump_key(MSG_DEBUG, "TDLS: KCK", tdls->tpk.kck, 16);
- ret = omac1_aes_128(tdls->tpk.kck, buf, pos - buf, mic);
- os_free(buf);
- if (ret)
- return -1;
- wpa_hexdump(MSG_DEBUG, "TDLS: FTIE MIC", mic, 16);
- rx_ftie = (const struct rsn_ftie *) elems->ftie;
-
- if (os_memcmp(mic, rx_ftie->mic, 16) == 0) {
- wpa_printf(MSG_DEBUG, "TDLS: Valid MIC");
- return 0;
- }
- wpa_printf(MSG_DEBUG, "TDLS: Invalid MIC");
- return -1;
-}
-
-
-static void rx_data_tdls_setup_request(struct wlantest *wt, const u8 *bssid,
- const u8 *sta_addr, const u8 *dst,
- const u8 *src,
- const u8 *data, size_t len)
-{
- struct ieee802_11_elems elems;
- struct wlantest_tdls *tdls;
-
- if (len < 3) {
- wpa_printf(MSG_INFO, "Too short TDLS Setup Request " MACSTR
- " -> " MACSTR, MAC2STR(src), MAC2STR(dst));
- return;
- }
- wpa_printf(MSG_DEBUG, "TDLS Setup Request " MACSTR " -> "
- MACSTR, MAC2STR(src), MAC2STR(dst));
-
- if (ieee802_11_parse_elems(data + 3, len - 3, &elems, 1) ==
- ParseFailed || elems.link_id == NULL)
- return;
- wpa_printf(MSG_DEBUG, "TDLS Link Identifier: BSSID " MACSTR
- " initiator STA " MACSTR " responder STA " MACSTR,
- MAC2STR(elems.link_id), MAC2STR(elems.link_id + ETH_ALEN),
- MAC2STR(elems.link_id + 2 * ETH_ALEN));
- tdls = get_tdls(wt, elems.link_id, 1, bssid);
- if (tdls) {
- tdls->counters[WLANTEST_TDLS_COUNTER_SETUP_REQ]++;
- tdls->dialog_token = data[0];
- }
-}
-
-
-static void rx_data_tdls_setup_response_failure(struct wlantest *wt,
- const u8 *bssid,
- const u8 *sta_addr,
- u8 dialog_token, u16 status)
-{
- struct wlantest_bss *bss;
- struct wlantest_tdls *tdls;
- struct wlantest_sta *sta;
-
- if (status == WLAN_STATUS_SUCCESS) {
- wpa_printf(MSG_INFO, "TDLS: Invalid TDLS Setup Response from "
- MACSTR, MAC2STR(sta_addr));
- return;
- }
-
- bss = bss_find(wt, bssid);
- if (!bss)
- return;
- sta = sta_find(bss, sta_addr);
- if (!sta)
- return;
-
- dl_list_for_each(tdls, &bss->tdls, struct wlantest_tdls, list) {
- if (tdls->resp == sta) {
- if (dialog_token != tdls->dialog_token) {
- wpa_printf(MSG_DEBUG, "TDLS: Dialog token "
- "mismatch in TDLS Setup Response "
- "(failure)");
- break;
- }
- wpa_printf(MSG_DEBUG, "TDLS: Found matching TDLS "
- "setup session based on dialog token");
- tdls->counters[
- WLANTEST_TDLS_COUNTER_SETUP_RESP_FAIL]++;
- break;
- }
- }
-}
-
-
-static void rx_data_tdls_setup_response(struct wlantest *wt, const u8 *bssid,
- const u8 *sta_addr, const u8 *dst,
- const u8 *src,
- const u8 *data, size_t len)
-{
- u16 status;
- struct ieee802_11_elems elems;
- struct wlantest_tdls *tdls;
-
- if (len < 3) {
- wpa_printf(MSG_INFO, "Too short TDLS Setup Response " MACSTR
- " -> " MACSTR, MAC2STR(src), MAC2STR(dst));
- return;
- }
- status = WPA_GET_LE16(data);
- wpa_printf(MSG_DEBUG, "TDLS Setup Response " MACSTR " -> "
- MACSTR " (status %d)",
- MAC2STR(src), MAC2STR(dst), status);
- if (len < 5 && status == 0) {
- wpa_printf(MSG_INFO, "Too short TDLS Setup Response " MACSTR
- " -> " MACSTR, MAC2STR(src), MAC2STR(dst));
- return;
- }
-
- if (len < 5 ||
- ieee802_11_parse_elems(data + 5, len - 5, &elems, 1) ==
- ParseFailed || elems.link_id == NULL) {
- /* Need to match TDLS link based on Dialog Token */
- rx_data_tdls_setup_response_failure(wt, bssid, sta_addr,
- data[2], status);
- return;
- }
- wpa_printf(MSG_DEBUG, "TDLS Link Identifier: BSSID " MACSTR
- " initiator STA " MACSTR " responder STA " MACSTR,
- MAC2STR(elems.link_id), MAC2STR(elems.link_id + ETH_ALEN),
- MAC2STR(elems.link_id + 2 * ETH_ALEN));
-
- tdls = get_tdls(wt, elems.link_id, 1, bssid);
- if (!tdls)
- return;
- if (status)
- tdls->counters[WLANTEST_TDLS_COUNTER_SETUP_RESP_FAIL]++;
- else
- tdls->counters[WLANTEST_TDLS_COUNTER_SETUP_RESP_OK]++;
-
- if (status != WLAN_STATUS_SUCCESS)
- return;
-
- if (tdls_derive_tpk(tdls, bssid, elems.ftie, elems.ftie_len) < 1)
- return;
- if (tdls_verify_mic(tdls, 2, &elems) == 0) {
- tdls->dialog_token = data[2];
- wpa_printf(MSG_DEBUG, "TDLS: Dialog Token for the link: %u",
- tdls->dialog_token);
- }
-}
-
-
-static void rx_data_tdls_setup_confirm_failure(struct wlantest *wt,
- const u8 *bssid,
- const u8 *src,
- u8 dialog_token, u16 status)
-{
- struct wlantest_bss *bss;
- struct wlantest_tdls *tdls;
- struct wlantest_sta *sta;
-
- if (status == WLAN_STATUS_SUCCESS) {
- wpa_printf(MSG_INFO, "TDLS: Invalid TDLS Setup Confirm from "
- MACSTR, MAC2STR(src));
- return;
- }
-
- bss = bss_find(wt, bssid);
- if (!bss)
- return;
- sta = sta_find(bss, src);
- if (!sta)
- return;
-
- dl_list_for_each(tdls, &bss->tdls, struct wlantest_tdls, list) {
- if (tdls->init == sta) {
- if (dialog_token != tdls->dialog_token) {
- wpa_printf(MSG_DEBUG, "TDLS: Dialog token "
- "mismatch in TDLS Setup Confirm "
- "(failure)");
- break;
- }
- wpa_printf(MSG_DEBUG, "TDLS: Found matching TDLS "
- "setup session based on dialog token");
- tdls->counters[
- WLANTEST_TDLS_COUNTER_SETUP_CONF_FAIL]++;
- break;
- }
- }
-}
-
-
-static void rx_data_tdls_setup_confirm(struct wlantest *wt, const u8 *bssid,
- const u8 *sta_addr, const u8 *dst,
- const u8 *src,
- const u8 *data, size_t len)
-{
- u16 status;
- struct ieee802_11_elems elems;
- struct wlantest_tdls *tdls;
- u8 link_id[3 * ETH_ALEN];
-
- if (len < 3) {
- wpa_printf(MSG_INFO, "Too short TDLS Setup Confirm " MACSTR
- " -> " MACSTR, MAC2STR(src), MAC2STR(dst));
- return;
- }
- status = WPA_GET_LE16(data);
- wpa_printf(MSG_DEBUG, "TDLS Setup Confirm " MACSTR " -> "
- MACSTR " (status %d)",
- MAC2STR(src), MAC2STR(dst), status);
-
- if (ieee802_11_parse_elems(data + 3, len - 3, &elems, 1) ==
- ParseFailed || elems.link_id == NULL) {
- /* Need to match TDLS link based on Dialog Token */
- rx_data_tdls_setup_confirm_failure(wt, bssid, src,
- data[2], status);
- return;
- }
- wpa_printf(MSG_DEBUG, "TDLS Link Identifier: BSSID " MACSTR
- " initiator STA " MACSTR " responder STA " MACSTR,
- MAC2STR(elems.link_id), MAC2STR(elems.link_id + ETH_ALEN),
- MAC2STR(elems.link_id + 2 * ETH_ALEN));
-
- tdls = get_tdls(wt, elems.link_id, 1, bssid);
- if (tdls == NULL)
- return;
- if (status)
- tdls->counters[WLANTEST_TDLS_COUNTER_SETUP_CONF_FAIL]++;
- else
- tdls->counters[WLANTEST_TDLS_COUNTER_SETUP_CONF_OK]++;
-
- if (status != WLAN_STATUS_SUCCESS)
- return;
-
- tdls->link_up = 1;
- if (tdls_derive_tpk(tdls, bssid, elems.ftie, elems.ftie_len) < 1) {
- if (elems.ftie == NULL)
- goto remove_reverse;
- return;
- }
- if (tdls_verify_mic(tdls, 3, &elems) == 0) {
- tdls->dialog_token = data[2];
- wpa_printf(MSG_DEBUG, "TDLS: Dialog Token for the link: %u",
- tdls->dialog_token);
- }
-
-remove_reverse:
- /*
- * The TDLS link itself is bidirectional, but there is explicit
- * initiator/responder roles. Remove the other direction of the link
- * (if it exists) to make sure that the link counters are stored for
- * the current TDLS entery.
- */
- os_memcpy(link_id, elems.link_id, ETH_ALEN);
- os_memcpy(link_id + ETH_ALEN, elems.link_id + 2 * ETH_ALEN, ETH_ALEN);
- os_memcpy(link_id + 2 * ETH_ALEN, elems.link_id + ETH_ALEN, ETH_ALEN);
- tdls = get_tdls(wt, link_id, 0, bssid);
- if (tdls) {
- wpa_printf(MSG_DEBUG, "TDLS: Remove reverse link entry");
- tdls_deinit(tdls);
- }
-}
-
-
-static int tdls_verify_mic_teardown(struct wlantest_tdls *tdls, u8 trans_seq,
- const u8 *reason_code,
- struct ieee802_11_elems *elems)
-{
- u8 *buf, *pos;
- int len;
- u8 mic[16];
- int ret;
- const struct rsn_ftie *rx_ftie;
- struct rsn_ftie *tmp_ftie;
-
- if (elems->link_id == NULL || elems->ftie == NULL)
- return -1;
-
- len = 2 + 18 + 2 + 1 + 1 + 2 + elems->ftie_len;
-
- buf = os_zalloc(len);
- if (buf == NULL)
- return -1;
-
- pos = buf;
- /* 1) Link Identifier IE */
- os_memcpy(pos, elems->link_id - 2, 2 + 18);
- pos += 2 + 18;
- /* 2) Reason Code */
- os_memcpy(pos, reason_code, 2);
- pos += 2;
- /* 3) Dialog token */
- *pos++ = tdls->dialog_token;
- /* 4) Transaction Sequence number */
- *pos++ = trans_seq;
- /* 5) FTIE, with the MIC field of the FTIE set to 0 */
- os_memcpy(pos, elems->ftie - 2, 2 + elems->ftie_len);
- pos += 2;
- tmp_ftie = (struct rsn_ftie *) pos;
- os_memset(tmp_ftie->mic, 0, 16);
- pos += elems->ftie_len;
-
- wpa_hexdump(MSG_DEBUG, "TDLS: Data for FTIE MIC", buf, pos - buf);
- wpa_hexdump_key(MSG_DEBUG, "TDLS: KCK", tdls->tpk.kck, 16);
- ret = omac1_aes_128(tdls->tpk.kck, buf, pos - buf, mic);
- os_free(buf);
- if (ret)
- return -1;
- wpa_hexdump(MSG_DEBUG, "TDLS: FTIE MIC", mic, 16);
- rx_ftie = (const struct rsn_ftie *) elems->ftie;
-
- if (os_memcmp(mic, rx_ftie->mic, 16) == 0) {
- wpa_printf(MSG_DEBUG, "TDLS: Valid MIC");
- return 0;
- }
- wpa_printf(MSG_DEBUG, "TDLS: Invalid MIC");
- return -1;
-}
-
-
-static void rx_data_tdls_teardown(struct wlantest *wt, const u8 *bssid,
- const u8 *sta_addr, const u8 *dst,
- const u8 *src,
- const u8 *data, size_t len)
-{
- u16 reason;
- struct ieee802_11_elems elems;
- struct wlantest_tdls *tdls;
-
- if (len < 2)
- return;
- reason = WPA_GET_LE16(data);
- wpa_printf(MSG_DEBUG, "TDLS Teardown " MACSTR " -> "
- MACSTR " (reason %d)",
- MAC2STR(src), MAC2STR(dst), reason);
-
- if (ieee802_11_parse_elems(data + 2, len - 2, &elems, 1) ==
- ParseFailed || elems.link_id == NULL)
- return;
- wpa_printf(MSG_DEBUG, "TDLS Link Identifier: BSSID " MACSTR
- " initiator STA " MACSTR " responder STA " MACSTR,
- MAC2STR(elems.link_id), MAC2STR(elems.link_id + ETH_ALEN),
- MAC2STR(elems.link_id + 2 * ETH_ALEN));
-
- tdls = get_tdls(wt, elems.link_id, 1, bssid);
- if (tdls) {
- tdls->link_up = 0;
- tdls->counters[WLANTEST_TDLS_COUNTER_TEARDOWN]++;
- tdls_verify_mic_teardown(tdls, 4, data, &elems);
- }
-}
-
-
-static void rx_data_tdls(struct wlantest *wt, const u8 *bssid,
- const u8 *sta_addr, const u8 *dst, const u8 *src,
- const u8 *data, size_t len)
-{
- /* data contains the payload of a TDLS Action frame */
- if (len < 2 || data[0] != WLAN_ACTION_TDLS) {
- wpa_hexdump(MSG_DEBUG, "Unrecognized encapsulated TDLS frame",
- data, len);
- return;
- }
-
- switch (data[1]) {
- case WLAN_TDLS_SETUP_REQUEST:
- rx_data_tdls_setup_request(wt, bssid, sta_addr, dst, src,
- data + 2, len - 2);
- break;
- case WLAN_TDLS_SETUP_RESPONSE:
- rx_data_tdls_setup_response(wt, bssid, sta_addr, dst, src,
- data + 2, len - 2);
- break;
- case WLAN_TDLS_SETUP_CONFIRM:
- rx_data_tdls_setup_confirm(wt, bssid, sta_addr, dst, src,
- data + 2, len - 2);
- break;
- case WLAN_TDLS_TEARDOWN:
- rx_data_tdls_teardown(wt, bssid, sta_addr, dst, src, data + 2,
- len - 2);
- break;
- case WLAN_TDLS_DISCOVERY_REQUEST:
- wpa_printf(MSG_DEBUG, "TDLS Discovery Request " MACSTR " -> "
- MACSTR, MAC2STR(src), MAC2STR(dst));
- break;
- }
-}
-
-
-void rx_data_80211_encap(struct wlantest *wt, const u8 *bssid,
- const u8 *sta_addr, const u8 *dst, const u8 *src,
- const u8 *data, size_t len)
-{
- wpa_hexdump(MSG_EXCESSIVE, "802.11 data encap frame", data, len);
- if (len < 1)
- return;
- if (data[0] == 0x02)
- rx_data_tdls(wt, bssid, sta_addr, dst, src, data + 1, len - 1);
-}