621 lines
18 KiB
C
621 lines
18 KiB
C
/*
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* wpa_supplicant - WPA/RSN IE and KDE processing
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* Copyright (c) 2003-2015, Jouni Malinen <j@w1.fi>
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*
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* This software may be distributed under the terms of the BSD license.
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* See README for more details.
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*/
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#include "includes.h"
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#include "common.h"
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#include "wpa.h"
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#include "pmksa_cache.h"
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#include "common/ieee802_11_defs.h"
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#include "wpa_i.h"
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#include "wpa_ie.h"
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/**
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* wpa_parse_wpa_ie - Parse WPA/RSN IE
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* @wpa_ie: Pointer to WPA or RSN IE
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* @wpa_ie_len: Length of the WPA/RSN IE
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* @data: Pointer to data area for parsing results
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* Returns: 0 on success, -1 on failure
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*
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* Parse the contents of WPA or RSN IE and write the parsed data into data.
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*/
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int wpa_parse_wpa_ie(const u8 *wpa_ie, size_t wpa_ie_len,
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struct wpa_ie_data *data)
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{
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if (wpa_ie_len >= 1 && wpa_ie[0] == WLAN_EID_RSN)
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return wpa_parse_wpa_ie_rsn(wpa_ie, wpa_ie_len, data);
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if (wpa_ie_len >= 6 && wpa_ie[0] == WLAN_EID_VENDOR_SPECIFIC &&
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wpa_ie[1] >= 4 && WPA_GET_BE32(&wpa_ie[2]) == OSEN_IE_VENDOR_TYPE)
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return wpa_parse_wpa_ie_rsn(wpa_ie, wpa_ie_len, data);
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else
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return wpa_parse_wpa_ie_wpa(wpa_ie, wpa_ie_len, data);
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}
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static int wpa_gen_wpa_ie_wpa(u8 *wpa_ie, size_t wpa_ie_len,
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int pairwise_cipher, int group_cipher,
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int key_mgmt)
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{
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u8 *pos;
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struct wpa_ie_hdr *hdr;
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u32 suite;
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if (wpa_ie_len < sizeof(*hdr) + WPA_SELECTOR_LEN +
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2 + WPA_SELECTOR_LEN + 2 + WPA_SELECTOR_LEN)
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return -1;
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hdr = (struct wpa_ie_hdr *) wpa_ie;
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hdr->elem_id = WLAN_EID_VENDOR_SPECIFIC;
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RSN_SELECTOR_PUT(hdr->oui, WPA_OUI_TYPE);
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WPA_PUT_LE16(hdr->version, WPA_VERSION);
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pos = (u8 *) (hdr + 1);
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suite = wpa_cipher_to_suite(WPA_PROTO_WPA, group_cipher);
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if (suite == 0) {
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wpa_printf(MSG_WARNING, "Invalid group cipher (%d).",
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group_cipher);
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return -1;
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}
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RSN_SELECTOR_PUT(pos, suite);
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pos += WPA_SELECTOR_LEN;
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*pos++ = 1;
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*pos++ = 0;
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suite = wpa_cipher_to_suite(WPA_PROTO_WPA, pairwise_cipher);
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if (suite == 0 ||
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(!wpa_cipher_valid_pairwise(pairwise_cipher) &&
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pairwise_cipher != WPA_CIPHER_NONE)) {
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wpa_printf(MSG_WARNING, "Invalid pairwise cipher (%d).",
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pairwise_cipher);
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return -1;
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}
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RSN_SELECTOR_PUT(pos, suite);
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pos += WPA_SELECTOR_LEN;
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*pos++ = 1;
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*pos++ = 0;
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if (key_mgmt == WPA_KEY_MGMT_IEEE8021X) {
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RSN_SELECTOR_PUT(pos, WPA_AUTH_KEY_MGMT_UNSPEC_802_1X);
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} else if (key_mgmt == WPA_KEY_MGMT_PSK) {
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RSN_SELECTOR_PUT(pos, WPA_AUTH_KEY_MGMT_PSK_OVER_802_1X);
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} else if (key_mgmt == WPA_KEY_MGMT_WPA_NONE) {
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RSN_SELECTOR_PUT(pos, WPA_AUTH_KEY_MGMT_NONE);
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} else if (key_mgmt == WPA_KEY_MGMT_CCKM) {
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RSN_SELECTOR_PUT(pos, WPA_AUTH_KEY_MGMT_CCKM);
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} else {
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wpa_printf(MSG_WARNING, "Invalid key management type (%d).",
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key_mgmt);
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return -1;
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}
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pos += WPA_SELECTOR_LEN;
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/* WPA Capabilities; use defaults, so no need to include it */
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hdr->len = (pos - wpa_ie) - 2;
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WPA_ASSERT((size_t) (pos - wpa_ie) <= wpa_ie_len);
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return pos - wpa_ie;
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}
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static int wpa_gen_wpa_ie_rsn(u8 *rsn_ie, size_t rsn_ie_len,
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int pairwise_cipher, int group_cipher,
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int key_mgmt, int mgmt_group_cipher,
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struct wpa_sm *sm)
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{
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u8 *pos;
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struct rsn_ie_hdr *hdr;
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u16 capab;
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u32 suite;
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if (rsn_ie_len < sizeof(*hdr) + RSN_SELECTOR_LEN +
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2 + RSN_SELECTOR_LEN + 2 + RSN_SELECTOR_LEN + 2 +
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(sm->cur_pmksa ? 2 + PMKID_LEN : 0)) {
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wpa_printf(MSG_DEBUG, "RSN: Too short IE buffer (%lu bytes)",
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(unsigned long) rsn_ie_len);
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return -1;
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}
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hdr = (struct rsn_ie_hdr *) rsn_ie;
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hdr->elem_id = WLAN_EID_RSN;
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WPA_PUT_LE16(hdr->version, RSN_VERSION);
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pos = (u8 *) (hdr + 1);
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suite = wpa_cipher_to_suite(WPA_PROTO_RSN, group_cipher);
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if (suite == 0) {
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wpa_printf(MSG_WARNING, "Invalid group cipher (%d).",
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group_cipher);
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return -1;
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}
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RSN_SELECTOR_PUT(pos, suite);
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pos += RSN_SELECTOR_LEN;
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*pos++ = 1;
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*pos++ = 0;
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suite = wpa_cipher_to_suite(WPA_PROTO_RSN, pairwise_cipher);
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if (suite == 0 ||
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(!wpa_cipher_valid_pairwise(pairwise_cipher) &&
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pairwise_cipher != WPA_CIPHER_NONE)) {
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wpa_printf(MSG_WARNING, "Invalid pairwise cipher (%d).",
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pairwise_cipher);
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return -1;
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}
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RSN_SELECTOR_PUT(pos, suite);
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pos += RSN_SELECTOR_LEN;
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*pos++ = 1;
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*pos++ = 0;
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if (key_mgmt == WPA_KEY_MGMT_IEEE8021X) {
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RSN_SELECTOR_PUT(pos, RSN_AUTH_KEY_MGMT_UNSPEC_802_1X);
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} else if (key_mgmt == WPA_KEY_MGMT_PSK) {
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RSN_SELECTOR_PUT(pos, RSN_AUTH_KEY_MGMT_PSK_OVER_802_1X);
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} else if (key_mgmt == WPA_KEY_MGMT_CCKM) {
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RSN_SELECTOR_PUT(pos, RSN_AUTH_KEY_MGMT_CCKM);
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#ifdef CONFIG_IEEE80211R
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} else if (key_mgmt == WPA_KEY_MGMT_FT_IEEE8021X) {
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RSN_SELECTOR_PUT(pos, RSN_AUTH_KEY_MGMT_FT_802_1X);
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} else if (key_mgmt == WPA_KEY_MGMT_FT_PSK) {
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RSN_SELECTOR_PUT(pos, RSN_AUTH_KEY_MGMT_FT_PSK);
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#endif /* CONFIG_IEEE80211R */
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#ifdef CONFIG_IEEE80211W
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} else if (key_mgmt == WPA_KEY_MGMT_IEEE8021X_SHA256) {
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RSN_SELECTOR_PUT(pos, RSN_AUTH_KEY_MGMT_802_1X_SHA256);
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} else if (key_mgmt == WPA_KEY_MGMT_PSK_SHA256) {
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RSN_SELECTOR_PUT(pos, RSN_AUTH_KEY_MGMT_PSK_SHA256);
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#endif /* CONFIG_IEEE80211W */
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#ifdef CONFIG_SAE
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} else if (key_mgmt == WPA_KEY_MGMT_SAE) {
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RSN_SELECTOR_PUT(pos, RSN_AUTH_KEY_MGMT_SAE);
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} else if (key_mgmt == WPA_KEY_MGMT_FT_SAE) {
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RSN_SELECTOR_PUT(pos, RSN_AUTH_KEY_MGMT_FT_SAE);
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#endif /* CONFIG_SAE */
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} else if (key_mgmt == WPA_KEY_MGMT_IEEE8021X_SUITE_B_192) {
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RSN_SELECTOR_PUT(pos, RSN_AUTH_KEY_MGMT_802_1X_SUITE_B_192);
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} else if (key_mgmt == WPA_KEY_MGMT_IEEE8021X_SUITE_B) {
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RSN_SELECTOR_PUT(pos, RSN_AUTH_KEY_MGMT_802_1X_SUITE_B);
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#ifdef CONFIG_FILS
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} else if (key_mgmt & WPA_KEY_MGMT_FILS_SHA256) {
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RSN_SELECTOR_PUT(pos, RSN_AUTH_KEY_MGMT_FILS_SHA256);
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} else if (key_mgmt & WPA_KEY_MGMT_FILS_SHA384) {
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RSN_SELECTOR_PUT(pos, RSN_AUTH_KEY_MGMT_FILS_SHA384);
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#ifdef CONFIG_IEEE80211R
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} else if (key_mgmt & WPA_KEY_MGMT_FT_FILS_SHA256) {
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RSN_SELECTOR_PUT(pos, RSN_AUTH_KEY_MGMT_FT_FILS_SHA256);
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} else if (key_mgmt & WPA_KEY_MGMT_FT_FILS_SHA384) {
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RSN_SELECTOR_PUT(pos, RSN_AUTH_KEY_MGMT_FT_FILS_SHA384);
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#endif /* CONFIG_IEEE80211R */
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#endif /* CONFIG_FILS */
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#ifdef CONFIG_OWE
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} else if (key_mgmt & WPA_KEY_MGMT_OWE) {
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RSN_SELECTOR_PUT(pos, RSN_AUTH_KEY_MGMT_OWE);
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#endif /* CONFIG_OWE */
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} else {
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wpa_printf(MSG_WARNING, "Invalid key management type (%d).",
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key_mgmt);
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return -1;
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}
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pos += RSN_SELECTOR_LEN;
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/* RSN Capabilities */
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capab = 0;
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#ifdef CONFIG_IEEE80211W
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if (sm->mfp)
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capab |= WPA_CAPABILITY_MFPC;
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if (sm->mfp == 2)
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capab |= WPA_CAPABILITY_MFPR;
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#endif /* CONFIG_IEEE80211W */
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WPA_PUT_LE16(pos, capab);
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pos += 2;
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if (sm->cur_pmksa) {
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/* PMKID Count (2 octets, little endian) */
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*pos++ = 1;
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*pos++ = 0;
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/* PMKID */
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os_memcpy(pos, sm->cur_pmksa->pmkid, PMKID_LEN);
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pos += PMKID_LEN;
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}
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#ifdef CONFIG_IEEE80211W
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if (wpa_cipher_valid_mgmt_group(mgmt_group_cipher)) {
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if (!sm->cur_pmksa) {
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/* PMKID Count */
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WPA_PUT_LE16(pos, 0);
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pos += 2;
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}
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/* Management Group Cipher Suite */
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RSN_SELECTOR_PUT(pos, wpa_cipher_to_suite(WPA_PROTO_RSN,
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mgmt_group_cipher));
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pos += RSN_SELECTOR_LEN;
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}
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#endif /* CONFIG_IEEE80211W */
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hdr->len = (pos - rsn_ie) - 2;
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WPA_ASSERT((size_t) (pos - rsn_ie) <= rsn_ie_len);
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return pos - rsn_ie;
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}
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#ifdef CONFIG_HS20
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static int wpa_gen_wpa_ie_osen(u8 *wpa_ie, size_t wpa_ie_len,
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int pairwise_cipher, int group_cipher,
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int key_mgmt)
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{
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u8 *pos, *len;
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u32 suite;
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if (wpa_ie_len < 2 + 4 + RSN_SELECTOR_LEN +
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2 + RSN_SELECTOR_LEN + 2 + RSN_SELECTOR_LEN)
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return -1;
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pos = wpa_ie;
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*pos++ = WLAN_EID_VENDOR_SPECIFIC;
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len = pos++; /* to be filled */
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WPA_PUT_BE24(pos, OUI_WFA);
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pos += 3;
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*pos++ = HS20_OSEN_OUI_TYPE;
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/* Group Data Cipher Suite */
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suite = wpa_cipher_to_suite(WPA_PROTO_RSN, group_cipher);
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if (suite == 0) {
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wpa_printf(MSG_WARNING, "Invalid group cipher (%d).",
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group_cipher);
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return -1;
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}
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RSN_SELECTOR_PUT(pos, suite);
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pos += RSN_SELECTOR_LEN;
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/* Pairwise Cipher Suite Count and List */
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WPA_PUT_LE16(pos, 1);
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pos += 2;
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suite = wpa_cipher_to_suite(WPA_PROTO_RSN, pairwise_cipher);
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if (suite == 0 ||
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(!wpa_cipher_valid_pairwise(pairwise_cipher) &&
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pairwise_cipher != WPA_CIPHER_NONE)) {
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wpa_printf(MSG_WARNING, "Invalid pairwise cipher (%d).",
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pairwise_cipher);
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return -1;
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}
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RSN_SELECTOR_PUT(pos, suite);
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pos += RSN_SELECTOR_LEN;
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/* AKM Suite Count and List */
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WPA_PUT_LE16(pos, 1);
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pos += 2;
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RSN_SELECTOR_PUT(pos, RSN_AUTH_KEY_MGMT_OSEN);
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pos += RSN_SELECTOR_LEN;
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*len = pos - len - 1;
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WPA_ASSERT((size_t) (pos - wpa_ie) <= wpa_ie_len);
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return pos - wpa_ie;
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}
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#endif /* CONFIG_HS20 */
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/**
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* wpa_gen_wpa_ie - Generate WPA/RSN IE based on current security policy
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* @sm: Pointer to WPA state machine data from wpa_sm_init()
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* @wpa_ie: Pointer to memory area for the generated WPA/RSN IE
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* @wpa_ie_len: Maximum length of the generated WPA/RSN IE
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* Returns: Length of the generated WPA/RSN IE or -1 on failure
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*/
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int wpa_gen_wpa_ie(struct wpa_sm *sm, u8 *wpa_ie, size_t wpa_ie_len)
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{
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if (sm->proto == WPA_PROTO_RSN)
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return wpa_gen_wpa_ie_rsn(wpa_ie, wpa_ie_len,
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sm->pairwise_cipher,
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sm->group_cipher,
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sm->key_mgmt, sm->mgmt_group_cipher,
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sm);
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#ifdef CONFIG_HS20
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else if (sm->proto == WPA_PROTO_OSEN)
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return wpa_gen_wpa_ie_osen(wpa_ie, wpa_ie_len,
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sm->pairwise_cipher,
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sm->group_cipher,
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sm->key_mgmt);
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#endif /* CONFIG_HS20 */
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else
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return wpa_gen_wpa_ie_wpa(wpa_ie, wpa_ie_len,
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sm->pairwise_cipher,
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sm->group_cipher,
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sm->key_mgmt);
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}
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/**
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* wpa_parse_vendor_specific - Parse Vendor Specific IEs
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* @pos: Pointer to the IE header
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* @end: Pointer to the end of the Key Data buffer
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* @ie: Pointer to parsed IE data
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* Returns: 0 on success, 1 if end mark is found, -1 on failure
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*/
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static int wpa_parse_vendor_specific(const u8 *pos, const u8 *end,
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struct wpa_eapol_ie_parse *ie)
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{
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unsigned int oui;
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if (pos[1] < 4) {
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wpa_printf(MSG_MSGDUMP, "Too short vendor specific IE ignored (len=%u)",
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pos[1]);
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return 1;
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}
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oui = WPA_GET_BE24(&pos[2]);
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if (oui == OUI_MICROSOFT && pos[5] == WMM_OUI_TYPE && pos[1] > 4) {
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if (pos[6] == WMM_OUI_SUBTYPE_INFORMATION_ELEMENT) {
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ie->wmm = &pos[2];
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ie->wmm_len = pos[1];
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wpa_hexdump(MSG_DEBUG, "WPA: WMM IE",
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ie->wmm, ie->wmm_len);
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} else if (pos[6] == WMM_OUI_SUBTYPE_PARAMETER_ELEMENT) {
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ie->wmm = &pos[2];
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ie->wmm_len = pos[1];
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wpa_hexdump(MSG_DEBUG, "WPA: WMM Parameter Element",
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ie->wmm, ie->wmm_len);
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}
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}
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return 0;
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}
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/**
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* wpa_parse_generic - Parse EAPOL-Key Key Data Generic IEs
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* @pos: Pointer to the IE header
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* @end: Pointer to the end of the Key Data buffer
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* @ie: Pointer to parsed IE data
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* Returns: 0 on success, 1 if end mark is found, -1 on failure
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*/
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static int wpa_parse_generic(const u8 *pos, const u8 *end,
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struct wpa_eapol_ie_parse *ie)
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{
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if (pos[1] == 0)
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return 1;
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if (pos[1] >= 6 &&
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RSN_SELECTOR_GET(pos + 2) == WPA_OUI_TYPE &&
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pos[2 + WPA_SELECTOR_LEN] == 1 &&
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pos[2 + WPA_SELECTOR_LEN + 1] == 0) {
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ie->wpa_ie = pos;
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ie->wpa_ie_len = pos[1] + 2;
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wpa_hexdump(MSG_DEBUG, "WPA: WPA IE in EAPOL-Key",
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ie->wpa_ie, ie->wpa_ie_len);
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return 0;
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}
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if (1 + RSN_SELECTOR_LEN < end - pos &&
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pos[1] >= RSN_SELECTOR_LEN + PMKID_LEN &&
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RSN_SELECTOR_GET(pos + 2) == RSN_KEY_DATA_PMKID) {
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ie->pmkid = pos + 2 + RSN_SELECTOR_LEN;
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wpa_hexdump(MSG_DEBUG, "WPA: PMKID in EAPOL-Key",
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pos, pos[1] + 2);
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return 0;
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}
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if (pos[1] > RSN_SELECTOR_LEN + 2 &&
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RSN_SELECTOR_GET(pos + 2) == RSN_KEY_DATA_GROUPKEY) {
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ie->gtk = pos + 2 + RSN_SELECTOR_LEN;
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ie->gtk_len = pos[1] - RSN_SELECTOR_LEN;
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wpa_hexdump_key(MSG_DEBUG, "WPA: GTK in EAPOL-Key",
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pos, pos[1] + 2);
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return 0;
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}
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if (pos[1] > RSN_SELECTOR_LEN + 2 &&
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RSN_SELECTOR_GET(pos + 2) == RSN_KEY_DATA_MAC_ADDR) {
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ie->mac_addr = pos + 2 + RSN_SELECTOR_LEN;
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ie->mac_addr_len = pos[1] - RSN_SELECTOR_LEN;
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wpa_hexdump(MSG_DEBUG, "WPA: MAC Address in EAPOL-Key",
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pos, pos[1] + 2);
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return 0;
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}
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#ifdef CONFIG_PEERKEY
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if (pos[1] > RSN_SELECTOR_LEN + 2 &&
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RSN_SELECTOR_GET(pos + 2) == RSN_KEY_DATA_SMK) {
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ie->smk = pos + 2 + RSN_SELECTOR_LEN;
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ie->smk_len = pos[1] - RSN_SELECTOR_LEN;
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wpa_hexdump_key(MSG_DEBUG, "WPA: SMK in EAPOL-Key",
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pos, pos[1] + 2);
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return 0;
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}
|
|
|
|
if (pos[1] > RSN_SELECTOR_LEN + 2 &&
|
|
RSN_SELECTOR_GET(pos + 2) == RSN_KEY_DATA_NONCE) {
|
|
ie->nonce = pos + 2 + RSN_SELECTOR_LEN;
|
|
ie->nonce_len = pos[1] - RSN_SELECTOR_LEN;
|
|
wpa_hexdump(MSG_DEBUG, "WPA: Nonce in EAPOL-Key",
|
|
pos, pos[1] + 2);
|
|
return 0;
|
|
}
|
|
|
|
if (pos[1] > RSN_SELECTOR_LEN + 2 &&
|
|
RSN_SELECTOR_GET(pos + 2) == RSN_KEY_DATA_LIFETIME) {
|
|
ie->lifetime = pos + 2 + RSN_SELECTOR_LEN;
|
|
ie->lifetime_len = pos[1] - RSN_SELECTOR_LEN;
|
|
wpa_hexdump(MSG_DEBUG, "WPA: Lifetime in EAPOL-Key",
|
|
pos, pos[1] + 2);
|
|
return 0;
|
|
}
|
|
|
|
if (pos[1] > RSN_SELECTOR_LEN + 2 &&
|
|
RSN_SELECTOR_GET(pos + 2) == RSN_KEY_DATA_ERROR) {
|
|
ie->error = pos + 2 + RSN_SELECTOR_LEN;
|
|
ie->error_len = pos[1] - RSN_SELECTOR_LEN;
|
|
wpa_hexdump(MSG_DEBUG, "WPA: Error in EAPOL-Key",
|
|
pos, pos[1] + 2);
|
|
return 0;
|
|
}
|
|
#endif /* CONFIG_PEERKEY */
|
|
|
|
#ifdef CONFIG_IEEE80211W
|
|
if (pos[1] > RSN_SELECTOR_LEN + 2 &&
|
|
RSN_SELECTOR_GET(pos + 2) == RSN_KEY_DATA_IGTK) {
|
|
ie->igtk = pos + 2 + RSN_SELECTOR_LEN;
|
|
ie->igtk_len = pos[1] - RSN_SELECTOR_LEN;
|
|
wpa_hexdump_key(MSG_DEBUG, "WPA: IGTK in EAPOL-Key",
|
|
pos, pos[1] + 2);
|
|
return 0;
|
|
}
|
|
#endif /* CONFIG_IEEE80211W */
|
|
|
|
#ifdef CONFIG_P2P
|
|
if (pos[1] >= RSN_SELECTOR_LEN + 1 &&
|
|
RSN_SELECTOR_GET(pos + 2) == WFA_KEY_DATA_IP_ADDR_REQ) {
|
|
ie->ip_addr_req = pos + 2 + RSN_SELECTOR_LEN;
|
|
wpa_hexdump(MSG_DEBUG, "WPA: IP Address Request in EAPOL-Key",
|
|
ie->ip_addr_req, pos[1] - RSN_SELECTOR_LEN);
|
|
return 0;
|
|
}
|
|
|
|
if (pos[1] >= RSN_SELECTOR_LEN + 3 * 4 &&
|
|
RSN_SELECTOR_GET(pos + 2) == WFA_KEY_DATA_IP_ADDR_ALLOC) {
|
|
ie->ip_addr_alloc = pos + 2 + RSN_SELECTOR_LEN;
|
|
wpa_hexdump(MSG_DEBUG,
|
|
"WPA: IP Address Allocation in EAPOL-Key",
|
|
ie->ip_addr_alloc, pos[1] - RSN_SELECTOR_LEN);
|
|
return 0;
|
|
}
|
|
#endif /* CONFIG_P2P */
|
|
|
|
return 0;
|
|
}
|
|
|
|
|
|
/**
|
|
* wpa_supplicant_parse_ies - Parse EAPOL-Key Key Data IEs
|
|
* @buf: Pointer to the Key Data buffer
|
|
* @len: Key Data Length
|
|
* @ie: Pointer to parsed IE data
|
|
* Returns: 0 on success, -1 on failure
|
|
*/
|
|
int wpa_supplicant_parse_ies(const u8 *buf, size_t len,
|
|
struct wpa_eapol_ie_parse *ie)
|
|
{
|
|
const u8 *pos, *end;
|
|
int ret = 0;
|
|
|
|
os_memset(ie, 0, sizeof(*ie));
|
|
for (pos = buf, end = pos + len; end - pos > 1; pos += 2 + pos[1]) {
|
|
if (pos[0] == 0xdd &&
|
|
((pos == buf + len - 1) || pos[1] == 0)) {
|
|
/* Ignore padding */
|
|
break;
|
|
}
|
|
if (2 + pos[1] > end - pos) {
|
|
wpa_printf(MSG_DEBUG, "WPA: EAPOL-Key Key Data "
|
|
"underflow (ie=%d len=%d pos=%d)",
|
|
pos[0], pos[1], (int) (pos - buf));
|
|
wpa_hexdump_key(MSG_DEBUG, "WPA: Key Data",
|
|
buf, len);
|
|
ret = -1;
|
|
break;
|
|
}
|
|
if (*pos == WLAN_EID_RSN) {
|
|
ie->rsn_ie = pos;
|
|
ie->rsn_ie_len = pos[1] + 2;
|
|
wpa_hexdump(MSG_DEBUG, "WPA: RSN IE in EAPOL-Key",
|
|
ie->rsn_ie, ie->rsn_ie_len);
|
|
} else if (*pos == WLAN_EID_MOBILITY_DOMAIN &&
|
|
pos[1] >= sizeof(struct rsn_mdie)) {
|
|
ie->mdie = pos;
|
|
ie->mdie_len = pos[1] + 2;
|
|
wpa_hexdump(MSG_DEBUG, "WPA: MDIE in EAPOL-Key",
|
|
ie->mdie, ie->mdie_len);
|
|
} else if (*pos == WLAN_EID_FAST_BSS_TRANSITION &&
|
|
pos[1] >= sizeof(struct rsn_ftie)) {
|
|
ie->ftie = pos;
|
|
ie->ftie_len = pos[1] + 2;
|
|
wpa_hexdump(MSG_DEBUG, "WPA: FTIE in EAPOL-Key",
|
|
ie->ftie, ie->ftie_len);
|
|
} else if (*pos == WLAN_EID_TIMEOUT_INTERVAL && pos[1] >= 5) {
|
|
if (pos[2] == WLAN_TIMEOUT_REASSOC_DEADLINE) {
|
|
ie->reassoc_deadline = pos;
|
|
wpa_hexdump(MSG_DEBUG, "WPA: Reassoc Deadline "
|
|
"in EAPOL-Key",
|
|
ie->reassoc_deadline, pos[1] + 2);
|
|
} else if (pos[2] == WLAN_TIMEOUT_KEY_LIFETIME) {
|
|
ie->key_lifetime = pos;
|
|
wpa_hexdump(MSG_DEBUG, "WPA: KeyLifetime "
|
|
"in EAPOL-Key",
|
|
ie->key_lifetime, pos[1] + 2);
|
|
} else {
|
|
wpa_hexdump(MSG_DEBUG, "WPA: Unrecognized "
|
|
"EAPOL-Key Key Data IE",
|
|
pos, 2 + pos[1]);
|
|
}
|
|
} else if (*pos == WLAN_EID_LINK_ID) {
|
|
if (pos[1] >= 18) {
|
|
ie->lnkid = pos;
|
|
ie->lnkid_len = pos[1] + 2;
|
|
}
|
|
} else if (*pos == WLAN_EID_EXT_CAPAB) {
|
|
ie->ext_capab = pos;
|
|
ie->ext_capab_len = pos[1] + 2;
|
|
} else if (*pos == WLAN_EID_SUPP_RATES) {
|
|
ie->supp_rates = pos;
|
|
ie->supp_rates_len = pos[1] + 2;
|
|
} else if (*pos == WLAN_EID_EXT_SUPP_RATES) {
|
|
ie->ext_supp_rates = pos;
|
|
ie->ext_supp_rates_len = pos[1] + 2;
|
|
} else if (*pos == WLAN_EID_HT_CAP &&
|
|
pos[1] >= sizeof(struct ieee80211_ht_capabilities)) {
|
|
ie->ht_capabilities = pos + 2;
|
|
} else if (*pos == WLAN_EID_VHT_AID) {
|
|
if (pos[1] >= 2)
|
|
ie->aid = WPA_GET_LE16(pos + 2) & 0x3fff;
|
|
} else if (*pos == WLAN_EID_VHT_CAP &&
|
|
pos[1] >= sizeof(struct ieee80211_vht_capabilities))
|
|
{
|
|
ie->vht_capabilities = pos + 2;
|
|
} else if (*pos == WLAN_EID_QOS && pos[1] >= 1) {
|
|
ie->qosinfo = pos[2];
|
|
} else if (*pos == WLAN_EID_SUPPORTED_CHANNELS) {
|
|
ie->supp_channels = pos + 2;
|
|
ie->supp_channels_len = pos[1];
|
|
} else if (*pos == WLAN_EID_SUPPORTED_OPERATING_CLASSES) {
|
|
/*
|
|
* The value of the Length field of the Supported
|
|
* Operating Classes element is between 2 and 253.
|
|
* Silently skip invalid elements to avoid interop
|
|
* issues when trying to use the value.
|
|
*/
|
|
if (pos[1] >= 2 && pos[1] <= 253) {
|
|
ie->supp_oper_classes = pos + 2;
|
|
ie->supp_oper_classes_len = pos[1];
|
|
}
|
|
} else if (*pos == WLAN_EID_VENDOR_SPECIFIC) {
|
|
ret = wpa_parse_generic(pos, end, ie);
|
|
if (ret < 0)
|
|
break;
|
|
if (ret > 0) {
|
|
ret = 0;
|
|
break;
|
|
}
|
|
|
|
ret = wpa_parse_vendor_specific(pos, end, ie);
|
|
if (ret < 0)
|
|
break;
|
|
if (ret > 0) {
|
|
ret = 0;
|
|
break;
|
|
}
|
|
} else {
|
|
wpa_hexdump(MSG_DEBUG, "WPA: Unrecognized EAPOL-Key "
|
|
"Key Data IE", pos, 2 + pos[1]);
|
|
}
|
|
}
|
|
|
|
return ret;
|
|
}
|