summaryrefslogtreecommitdiff
path: root/src/common/wpa_common.c
diff options
context:
space:
mode:
Diffstat (limited to 'src/common/wpa_common.c')
-rw-r--r--src/common/wpa_common.c445
1 files changed, 437 insertions, 8 deletions
diff --git a/src/common/wpa_common.c b/src/common/wpa_common.c
index b295f315624a..8d7a11cfc74b 100644
--- a/src/common/wpa_common.c
+++ b/src/common/wpa_common.c
@@ -2,14 +2,8 @@
* WPA/RSN - Shared functions for supplicant and authenticator
* Copyright (c) 2002-2008, Jouni Malinen <j@w1.fi>
*
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
- *
- * Alternatively, this software may be distributed under the terms of BSD
- * license.
- *
- * See README and COPYING for more details.
+ * This software may be distributed under the terms of the BSD license.
+ * See README for more details.
*/
#include "includes.h"
@@ -49,8 +43,10 @@ int wpa_eapol_key_mic(const u8 *key, int ver, const u8 *buf, size_t len,
u8 hash[SHA1_MAC_LEN];
switch (ver) {
+#ifndef CONFIG_FIPS
case WPA_KEY_INFO_TYPE_HMAC_MD5_RC4:
return hmac_md5(key, 16, buf, len, mic);
+#endif /* CONFIG_FIPS */
case WPA_KEY_INFO_TYPE_HMAC_SHA1_AES:
if (hmac_sha1(key, 16, buf, len, hash))
return -1;
@@ -126,6 +122,8 @@ void wpa_pmk_to_ptk(const u8 *pmk, size_t pmk_len, const char *label,
wpa_printf(MSG_DEBUG, "WPA: PTK derivation - A1=" MACSTR " A2=" MACSTR,
MAC2STR(addr1), MAC2STR(addr2));
+ wpa_hexdump(MSG_DEBUG, "WPA: Nonce1", nonce1, WPA_NONCE_LEN);
+ wpa_hexdump(MSG_DEBUG, "WPA: Nonce2", nonce2, WPA_NONCE_LEN);
wpa_hexdump_key(MSG_DEBUG, "WPA: PMK", pmk, pmk_len);
wpa_hexdump_key(MSG_DEBUG, "WPA: PTK", ptk, ptk_len);
}
@@ -186,6 +184,154 @@ int wpa_ft_mic(const u8 *kck, const u8 *sta_addr, const u8 *ap_addr,
return 0;
}
+
+
+static int wpa_ft_parse_ftie(const u8 *ie, size_t ie_len,
+ struct wpa_ft_ies *parse)
+{
+ const u8 *end, *pos;
+
+ parse->ftie = ie;
+ parse->ftie_len = ie_len;
+
+ pos = ie + sizeof(struct rsn_ftie);
+ end = ie + ie_len;
+
+ while (pos + 2 <= end && pos + 2 + pos[1] <= end) {
+ switch (pos[0]) {
+ case FTIE_SUBELEM_R1KH_ID:
+ if (pos[1] != FT_R1KH_ID_LEN) {
+ wpa_printf(MSG_DEBUG, "FT: Invalid R1KH-ID "
+ "length in FTIE: %d", pos[1]);
+ return -1;
+ }
+ parse->r1kh_id = pos + 2;
+ break;
+ case FTIE_SUBELEM_GTK:
+ parse->gtk = pos + 2;
+ parse->gtk_len = pos[1];
+ break;
+ case FTIE_SUBELEM_R0KH_ID:
+ if (pos[1] < 1 || pos[1] > FT_R0KH_ID_MAX_LEN) {
+ wpa_printf(MSG_DEBUG, "FT: Invalid R0KH-ID "
+ "length in FTIE: %d", pos[1]);
+ return -1;
+ }
+ parse->r0kh_id = pos + 2;
+ parse->r0kh_id_len = pos[1];
+ break;
+#ifdef CONFIG_IEEE80211W
+ case FTIE_SUBELEM_IGTK:
+ parse->igtk = pos + 2;
+ parse->igtk_len = pos[1];
+ break;
+#endif /* CONFIG_IEEE80211W */
+ }
+
+ pos += 2 + pos[1];
+ }
+
+ return 0;
+}
+
+
+int wpa_ft_parse_ies(const u8 *ies, size_t ies_len,
+ struct wpa_ft_ies *parse)
+{
+ const u8 *end, *pos;
+ struct wpa_ie_data data;
+ int ret;
+ const struct rsn_ftie *ftie;
+ int prot_ie_count = 0;
+
+ os_memset(parse, 0, sizeof(*parse));
+ if (ies == NULL)
+ return 0;
+
+ pos = ies;
+ end = ies + ies_len;
+ while (pos + 2 <= end && pos + 2 + pos[1] <= end) {
+ switch (pos[0]) {
+ case WLAN_EID_RSN:
+ parse->rsn = pos + 2;
+ parse->rsn_len = pos[1];
+ ret = wpa_parse_wpa_ie_rsn(parse->rsn - 2,
+ parse->rsn_len + 2,
+ &data);
+ if (ret < 0) {
+ wpa_printf(MSG_DEBUG, "FT: Failed to parse "
+ "RSN IE: %d", ret);
+ return -1;
+ }
+ if (data.num_pmkid == 1 && data.pmkid)
+ parse->rsn_pmkid = data.pmkid;
+ break;
+ case WLAN_EID_MOBILITY_DOMAIN:
+ parse->mdie = pos + 2;
+ parse->mdie_len = pos[1];
+ break;
+ case WLAN_EID_FAST_BSS_TRANSITION:
+ if (pos[1] < sizeof(*ftie))
+ return -1;
+ ftie = (const struct rsn_ftie *) (pos + 2);
+ prot_ie_count = ftie->mic_control[1];
+ if (wpa_ft_parse_ftie(pos + 2, pos[1], parse) < 0)
+ return -1;
+ break;
+ case WLAN_EID_TIMEOUT_INTERVAL:
+ parse->tie = pos + 2;
+ parse->tie_len = pos[1];
+ break;
+ case WLAN_EID_RIC_DATA:
+ if (parse->ric == NULL)
+ parse->ric = pos;
+ break;
+ }
+
+ pos += 2 + pos[1];
+ }
+
+ if (prot_ie_count == 0)
+ return 0; /* no MIC */
+
+ /*
+ * Check that the protected IE count matches with IEs included in the
+ * frame.
+ */
+ if (parse->rsn)
+ prot_ie_count--;
+ if (parse->mdie)
+ prot_ie_count--;
+ if (parse->ftie)
+ prot_ie_count--;
+ if (prot_ie_count < 0) {
+ wpa_printf(MSG_DEBUG, "FT: Some required IEs not included in "
+ "the protected IE count");
+ return -1;
+ }
+
+ if (prot_ie_count == 0 && parse->ric) {
+ wpa_printf(MSG_DEBUG, "FT: RIC IE(s) in the frame, but not "
+ "included in protected IE count");
+ return -1;
+ }
+
+ /* Determine the end of the RIC IE(s) */
+ pos = parse->ric;
+ while (pos && pos + 2 <= end && pos + 2 + pos[1] <= end &&
+ prot_ie_count) {
+ prot_ie_count--;
+ pos += 2 + pos[1];
+ }
+ parse->ric_len = pos - parse->ric;
+ if (prot_ie_count) {
+ wpa_printf(MSG_DEBUG, "FT: %d protected IEs missing from "
+ "frame", (int) prot_ie_count);
+ return -1;
+ }
+
+ return 0;
+}
#endif /* CONFIG_IEEE80211R */
@@ -206,6 +352,8 @@ static int rsn_selector_to_bitfield(const u8 *s)
if (RSN_SELECTOR_GET(s) == RSN_CIPHER_SUITE_AES_128_CMAC)
return WPA_CIPHER_AES_128_CMAC;
#endif /* CONFIG_IEEE80211W */
+ if (RSN_SELECTOR_GET(s) == RSN_CIPHER_SUITE_GCMP)
+ return WPA_CIPHER_GCMP;
return 0;
}
@@ -228,6 +376,12 @@ static int rsn_key_mgmt_to_bitfield(const u8 *s)
if (RSN_SELECTOR_GET(s) == RSN_AUTH_KEY_MGMT_PSK_SHA256)
return WPA_KEY_MGMT_PSK_SHA256;
#endif /* CONFIG_IEEE80211W */
+#ifdef CONFIG_SAE
+ if (RSN_SELECTOR_GET(s) == RSN_AUTH_KEY_MGMT_SAE)
+ return WPA_KEY_MGMT_SAE;
+ if (RSN_SELECTOR_GET(s) == RSN_AUTH_KEY_MGMT_FT_SAE)
+ return WPA_KEY_MGMT_FT_SAE;
+#endif /* CONFIG_SAE */
return 0;
}
#endif /* CONFIG_NO_WPA2 */
@@ -403,6 +557,144 @@ int wpa_parse_wpa_ie_rsn(const u8 *rsn_ie, size_t rsn_ie_len,
}
+static int wpa_selector_to_bitfield(const u8 *s)
+{
+ if (RSN_SELECTOR_GET(s) == WPA_CIPHER_SUITE_NONE)
+ return WPA_CIPHER_NONE;
+ if (RSN_SELECTOR_GET(s) == WPA_CIPHER_SUITE_WEP40)
+ return WPA_CIPHER_WEP40;
+ if (RSN_SELECTOR_GET(s) == WPA_CIPHER_SUITE_TKIP)
+ return WPA_CIPHER_TKIP;
+ if (RSN_SELECTOR_GET(s) == WPA_CIPHER_SUITE_CCMP)
+ return WPA_CIPHER_CCMP;
+ if (RSN_SELECTOR_GET(s) == WPA_CIPHER_SUITE_WEP104)
+ return WPA_CIPHER_WEP104;
+ return 0;
+}
+
+
+static int wpa_key_mgmt_to_bitfield(const u8 *s)
+{
+ if (RSN_SELECTOR_GET(s) == WPA_AUTH_KEY_MGMT_UNSPEC_802_1X)
+ return WPA_KEY_MGMT_IEEE8021X;
+ if (RSN_SELECTOR_GET(s) == WPA_AUTH_KEY_MGMT_PSK_OVER_802_1X)
+ return WPA_KEY_MGMT_PSK;
+ if (RSN_SELECTOR_GET(s) == WPA_AUTH_KEY_MGMT_NONE)
+ return WPA_KEY_MGMT_WPA_NONE;
+ return 0;
+}
+
+
+int wpa_parse_wpa_ie_wpa(const u8 *wpa_ie, size_t wpa_ie_len,
+ struct wpa_ie_data *data)
+{
+ const struct wpa_ie_hdr *hdr;
+ const u8 *pos;
+ int left;
+ int i, count;
+
+ os_memset(data, 0, sizeof(*data));
+ data->proto = WPA_PROTO_WPA;
+ data->pairwise_cipher = WPA_CIPHER_TKIP;
+ data->group_cipher = WPA_CIPHER_TKIP;
+ data->key_mgmt = WPA_KEY_MGMT_IEEE8021X;
+ data->capabilities = 0;
+ data->pmkid = NULL;
+ data->num_pmkid = 0;
+ data->mgmt_group_cipher = 0;
+
+ if (wpa_ie_len == 0) {
+ /* No WPA IE - fail silently */
+ return -1;
+ }
+
+ if (wpa_ie_len < sizeof(struct wpa_ie_hdr)) {
+ wpa_printf(MSG_DEBUG, "%s: ie len too short %lu",
+ __func__, (unsigned long) wpa_ie_len);
+ return -1;
+ }
+
+ hdr = (const struct wpa_ie_hdr *) wpa_ie;
+
+ if (hdr->elem_id != WLAN_EID_VENDOR_SPECIFIC ||
+ hdr->len != wpa_ie_len - 2 ||
+ RSN_SELECTOR_GET(hdr->oui) != WPA_OUI_TYPE ||
+ WPA_GET_LE16(hdr->version) != WPA_VERSION) {
+ wpa_printf(MSG_DEBUG, "%s: malformed ie or unknown version",
+ __func__);
+ return -2;
+ }
+
+ pos = (const u8 *) (hdr + 1);
+ left = wpa_ie_len - sizeof(*hdr);
+
+ if (left >= WPA_SELECTOR_LEN) {
+ data->group_cipher = wpa_selector_to_bitfield(pos);
+ pos += WPA_SELECTOR_LEN;
+ left -= WPA_SELECTOR_LEN;
+ } else if (left > 0) {
+ wpa_printf(MSG_DEBUG, "%s: ie length mismatch, %u too much",
+ __func__, left);
+ return -3;
+ }
+
+ if (left >= 2) {
+ data->pairwise_cipher = 0;
+ count = WPA_GET_LE16(pos);
+ pos += 2;
+ left -= 2;
+ if (count == 0 || left < count * WPA_SELECTOR_LEN) {
+ wpa_printf(MSG_DEBUG, "%s: ie count botch (pairwise), "
+ "count %u left %u", __func__, count, left);
+ return -4;
+ }
+ for (i = 0; i < count; i++) {
+ data->pairwise_cipher |= wpa_selector_to_bitfield(pos);
+ pos += WPA_SELECTOR_LEN;
+ left -= WPA_SELECTOR_LEN;
+ }
+ } else if (left == 1) {
+ wpa_printf(MSG_DEBUG, "%s: ie too short (for key mgmt)",
+ __func__);
+ return -5;
+ }
+
+ if (left >= 2) {
+ data->key_mgmt = 0;
+ count = WPA_GET_LE16(pos);
+ pos += 2;
+ left -= 2;
+ if (count == 0 || left < count * WPA_SELECTOR_LEN) {
+ wpa_printf(MSG_DEBUG, "%s: ie count botch (key mgmt), "
+ "count %u left %u", __func__, count, left);
+ return -6;
+ }
+ for (i = 0; i < count; i++) {
+ data->key_mgmt |= wpa_key_mgmt_to_bitfield(pos);
+ pos += WPA_SELECTOR_LEN;
+ left -= WPA_SELECTOR_LEN;
+ }
+ } else if (left == 1) {
+ wpa_printf(MSG_DEBUG, "%s: ie too short (for capabilities)",
+ __func__);
+ return -7;
+ }
+
+ if (left >= 2) {
+ data->capabilities = WPA_GET_LE16(pos);
+ pos += 2;
+ left -= 2;
+ }
+
+ if (left > 0) {
+ wpa_printf(MSG_DEBUG, "%s: ie has %u trailing bytes - ignored",
+ __func__, left);
+ }
+
+ return 0;
+}
+
+
#ifdef CONFIG_IEEE80211R
/**
@@ -624,6 +916,8 @@ const char * wpa_cipher_txt(int cipher)
return "CCMP";
case WPA_CIPHER_CCMP | WPA_CIPHER_TKIP:
return "CCMP+TKIP";
+ case WPA_CIPHER_GCMP:
+ return "GCMP";
default:
return "UNKNOWN";
}
@@ -785,3 +1079,138 @@ int wpa_insert_pmkid(u8 *ies, size_t ies_len, const u8 *pmkid)
return added;
}
#endif /* CONFIG_IEEE80211R */
+
+
+int wpa_cipher_key_len(int cipher)
+{
+ switch (cipher) {
+ case WPA_CIPHER_CCMP:
+ case WPA_CIPHER_GCMP:
+ return 16;
+ case WPA_CIPHER_TKIP:
+ return 32;
+ case WPA_CIPHER_WEP104:
+ return 13;
+ case WPA_CIPHER_WEP40:
+ return 5;
+ }
+
+ return 0;
+}
+
+
+int wpa_cipher_rsc_len(int cipher)
+{
+ switch (cipher) {
+ case WPA_CIPHER_CCMP:
+ case WPA_CIPHER_GCMP:
+ case WPA_CIPHER_TKIP:
+ return 6;
+ case WPA_CIPHER_WEP104:
+ case WPA_CIPHER_WEP40:
+ return 0;
+ }
+
+ return 0;
+}
+
+
+int wpa_cipher_to_alg(int cipher)
+{
+ switch (cipher) {
+ case WPA_CIPHER_CCMP:
+ return WPA_ALG_CCMP;
+ case WPA_CIPHER_GCMP:
+ return WPA_ALG_GCMP;
+ case WPA_CIPHER_TKIP:
+ return WPA_ALG_TKIP;
+ case WPA_CIPHER_WEP104:
+ case WPA_CIPHER_WEP40:
+ return WPA_ALG_WEP;
+ }
+ return WPA_ALG_NONE;
+}
+
+
+int wpa_cipher_valid_pairwise(int cipher)
+{
+ return cipher == WPA_CIPHER_CCMP ||
+ cipher == WPA_CIPHER_GCMP ||
+ cipher == WPA_CIPHER_TKIP;
+}
+
+
+u32 wpa_cipher_to_suite(int proto, int cipher)
+{
+ if (cipher & WPA_CIPHER_CCMP)
+ return (proto == WPA_PROTO_RSN ?
+ RSN_CIPHER_SUITE_CCMP : WPA_CIPHER_SUITE_CCMP);
+ if (cipher & WPA_CIPHER_GCMP)
+ return RSN_CIPHER_SUITE_GCMP;
+ if (cipher & WPA_CIPHER_TKIP)
+ return (proto == WPA_PROTO_RSN ?
+ RSN_CIPHER_SUITE_TKIP : WPA_CIPHER_SUITE_TKIP);
+ if (cipher & WPA_CIPHER_WEP104)
+ return (proto == WPA_PROTO_RSN ?
+ RSN_CIPHER_SUITE_WEP104 : WPA_CIPHER_SUITE_WEP104);
+ if (cipher & WPA_CIPHER_WEP40)
+ return (proto == WPA_PROTO_RSN ?
+ RSN_CIPHER_SUITE_WEP40 : WPA_CIPHER_SUITE_WEP40);
+ if (cipher & WPA_CIPHER_NONE)
+ return (proto == WPA_PROTO_RSN ?
+ RSN_CIPHER_SUITE_NONE : WPA_CIPHER_SUITE_NONE);
+ return 0;
+}
+
+
+int rsn_cipher_put_suites(u8 *pos, int ciphers)
+{
+ int num_suites = 0;
+
+ if (ciphers & WPA_CIPHER_CCMP) {
+ RSN_SELECTOR_PUT(pos, RSN_CIPHER_SUITE_CCMP);
+ pos += RSN_SELECTOR_LEN;
+ num_suites++;
+ }
+ if (ciphers & WPA_CIPHER_GCMP) {
+ RSN_SELECTOR_PUT(pos, RSN_CIPHER_SUITE_GCMP);
+ pos += RSN_SELECTOR_LEN;
+ num_suites++;
+ }
+ if (ciphers & WPA_CIPHER_TKIP) {
+ RSN_SELECTOR_PUT(pos, RSN_CIPHER_SUITE_TKIP);
+ pos += RSN_SELECTOR_LEN;
+ num_suites++;
+ }
+ if (ciphers & WPA_CIPHER_NONE) {
+ RSN_SELECTOR_PUT(pos, RSN_CIPHER_SUITE_NONE);
+ pos += RSN_SELECTOR_LEN;
+ num_suites++;
+ }
+
+ return num_suites;
+}
+
+
+int wpa_cipher_put_suites(u8 *pos, int ciphers)
+{
+ int num_suites = 0;
+
+ if (ciphers & WPA_CIPHER_CCMP) {
+ RSN_SELECTOR_PUT(pos, WPA_CIPHER_SUITE_CCMP);
+ pos += WPA_SELECTOR_LEN;
+ num_suites++;
+ }
+ if (ciphers & WPA_CIPHER_TKIP) {
+ RSN_SELECTOR_PUT(pos, WPA_CIPHER_SUITE_TKIP);
+ pos += WPA_SELECTOR_LEN;
+ num_suites++;
+ }
+ if (ciphers & WPA_CIPHER_NONE) {
+ RSN_SELECTOR_PUT(pos, WPA_CIPHER_SUITE_NONE);
+ pos += WPA_SELECTOR_LEN;
+ num_suites++;
+ }
+
+ return num_suites;
+}
generated by cgit v1.2.3 (git 2.25.1) at 2025-02-23 08:06:59 +0000