| /* |
| * hostapd - WPA/RSN IE and KDE definitions |
| * Copyright (c) 2004-2008, 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. |
| */ |
| |
| #include "utils/includes.h" |
| |
| #include "utils/common.h" |
| #include "common/ieee802_11_defs.h" |
| #include "eapol_auth/eapol_auth_sm.h" |
| #include "ap_config.h" |
| #include "ieee802_11.h" |
| #include "wpa_auth.h" |
| #include "pmksa_cache_auth.h" |
| #include "wpa_auth_ie.h" |
| #include "wpa_auth_i.h" |
| |
| |
| #ifdef CONFIG_RSN_TESTING |
| int rsn_testing = 0; |
| #endif /* CONFIG_RSN_TESTING */ |
| |
| |
| static int wpa_write_wpa_ie(struct wpa_auth_config *conf, u8 *buf, size_t len) |
| { |
| struct wpa_ie_hdr *hdr; |
| int num_suites; |
| u8 *pos, *count; |
| |
| hdr = (struct wpa_ie_hdr *) buf; |
| hdr->elem_id = WLAN_EID_VENDOR_SPECIFIC; |
| RSN_SELECTOR_PUT(hdr->oui, WPA_OUI_TYPE); |
| WPA_PUT_LE16(hdr->version, WPA_VERSION); |
| pos = (u8 *) (hdr + 1); |
| |
| if (conf->wpa_group == WPA_CIPHER_CCMP) { |
| RSN_SELECTOR_PUT(pos, WPA_CIPHER_SUITE_CCMP); |
| } else if (conf->wpa_group == WPA_CIPHER_TKIP) { |
| RSN_SELECTOR_PUT(pos, WPA_CIPHER_SUITE_TKIP); |
| } else if (conf->wpa_group == WPA_CIPHER_WEP104) { |
| RSN_SELECTOR_PUT(pos, WPA_CIPHER_SUITE_WEP104); |
| } else if (conf->wpa_group == WPA_CIPHER_WEP40) { |
| RSN_SELECTOR_PUT(pos, WPA_CIPHER_SUITE_WEP40); |
| } else { |
| wpa_printf(MSG_DEBUG, "Invalid group cipher (%d).", |
| conf->wpa_group); |
| return -1; |
| } |
| pos += WPA_SELECTOR_LEN; |
| |
| num_suites = 0; |
| count = pos; |
| pos += 2; |
| |
| if (conf->wpa_pairwise & WPA_CIPHER_CCMP) { |
| RSN_SELECTOR_PUT(pos, WPA_CIPHER_SUITE_CCMP); |
| pos += WPA_SELECTOR_LEN; |
| num_suites++; |
| } |
| if (conf->wpa_pairwise & WPA_CIPHER_TKIP) { |
| RSN_SELECTOR_PUT(pos, WPA_CIPHER_SUITE_TKIP); |
| pos += WPA_SELECTOR_LEN; |
| num_suites++; |
| } |
| if (conf->wpa_pairwise & WPA_CIPHER_NONE) { |
| RSN_SELECTOR_PUT(pos, WPA_CIPHER_SUITE_NONE); |
| pos += WPA_SELECTOR_LEN; |
| num_suites++; |
| } |
| |
| if (num_suites == 0) { |
| wpa_printf(MSG_DEBUG, "Invalid pairwise cipher (%d).", |
| conf->wpa_pairwise); |
| return -1; |
| } |
| WPA_PUT_LE16(count, num_suites); |
| |
| num_suites = 0; |
| count = pos; |
| pos += 2; |
| |
| if (conf->wpa_key_mgmt & WPA_KEY_MGMT_IEEE8021X) { |
| RSN_SELECTOR_PUT(pos, WPA_AUTH_KEY_MGMT_UNSPEC_802_1X); |
| pos += WPA_SELECTOR_LEN; |
| num_suites++; |
| } |
| if (conf->wpa_key_mgmt & WPA_KEY_MGMT_PSK) { |
| RSN_SELECTOR_PUT(pos, WPA_AUTH_KEY_MGMT_PSK_OVER_802_1X); |
| pos += WPA_SELECTOR_LEN; |
| num_suites++; |
| } |
| |
| if (num_suites == 0) { |
| wpa_printf(MSG_DEBUG, "Invalid key management type (%d).", |
| conf->wpa_key_mgmt); |
| return -1; |
| } |
| WPA_PUT_LE16(count, num_suites); |
| |
| /* WPA Capabilities; use defaults, so no need to include it */ |
| |
| hdr->len = (pos - buf) - 2; |
| |
| return pos - buf; |
| } |
| |
| |
| int wpa_write_rsn_ie(struct wpa_auth_config *conf, u8 *buf, size_t len, |
| const u8 *pmkid) |
| { |
| struct rsn_ie_hdr *hdr; |
| int num_suites; |
| u8 *pos, *count; |
| u16 capab; |
| |
| hdr = (struct rsn_ie_hdr *) buf; |
| hdr->elem_id = WLAN_EID_RSN; |
| WPA_PUT_LE16(hdr->version, RSN_VERSION); |
| pos = (u8 *) (hdr + 1); |
| |
| if (conf->wpa_group == WPA_CIPHER_CCMP) { |
| RSN_SELECTOR_PUT(pos, RSN_CIPHER_SUITE_CCMP); |
| } else if (conf->wpa_group == WPA_CIPHER_TKIP) { |
| RSN_SELECTOR_PUT(pos, RSN_CIPHER_SUITE_TKIP); |
| } else if (conf->wpa_group == WPA_CIPHER_WEP104) { |
| RSN_SELECTOR_PUT(pos, RSN_CIPHER_SUITE_WEP104); |
| } else if (conf->wpa_group == WPA_CIPHER_WEP40) { |
| RSN_SELECTOR_PUT(pos, RSN_CIPHER_SUITE_WEP40); |
| } else { |
| wpa_printf(MSG_DEBUG, "Invalid group cipher (%d).", |
| conf->wpa_group); |
| return -1; |
| } |
| pos += RSN_SELECTOR_LEN; |
| |
| num_suites = 0; |
| count = pos; |
| pos += 2; |
| |
| #ifdef CONFIG_RSN_TESTING |
| if (rsn_testing) { |
| RSN_SELECTOR_PUT(pos, RSN_SELECTOR(0x12, 0x34, 0x56, 1)); |
| pos += RSN_SELECTOR_LEN; |
| num_suites++; |
| } |
| #endif /* CONFIG_RSN_TESTING */ |
| |
| if (conf->rsn_pairwise & WPA_CIPHER_CCMP) { |
| RSN_SELECTOR_PUT(pos, RSN_CIPHER_SUITE_CCMP); |
| pos += RSN_SELECTOR_LEN; |
| num_suites++; |
| } |
| if (conf->rsn_pairwise & WPA_CIPHER_TKIP) { |
| RSN_SELECTOR_PUT(pos, RSN_CIPHER_SUITE_TKIP); |
| pos += RSN_SELECTOR_LEN; |
| num_suites++; |
| } |
| if (conf->rsn_pairwise & WPA_CIPHER_NONE) { |
| RSN_SELECTOR_PUT(pos, RSN_CIPHER_SUITE_NONE); |
| pos += RSN_SELECTOR_LEN; |
| num_suites++; |
| } |
| |
| #ifdef CONFIG_RSN_TESTING |
| if (rsn_testing) { |
| RSN_SELECTOR_PUT(pos, RSN_SELECTOR(0x12, 0x34, 0x56, 2)); |
| pos += RSN_SELECTOR_LEN; |
| num_suites++; |
| } |
| #endif /* CONFIG_RSN_TESTING */ |
| |
| if (num_suites == 0) { |
| wpa_printf(MSG_DEBUG, "Invalid pairwise cipher (%d).", |
| conf->rsn_pairwise); |
| return -1; |
| } |
| WPA_PUT_LE16(count, num_suites); |
| |
| num_suites = 0; |
| count = pos; |
| pos += 2; |
| |
| #ifdef CONFIG_RSN_TESTING |
| if (rsn_testing) { |
| RSN_SELECTOR_PUT(pos, RSN_SELECTOR(0x12, 0x34, 0x56, 1)); |
| pos += RSN_SELECTOR_LEN; |
| num_suites++; |
| } |
| #endif /* CONFIG_RSN_TESTING */ |
| |
| if (conf->wpa_key_mgmt & WPA_KEY_MGMT_IEEE8021X) { |
| RSN_SELECTOR_PUT(pos, RSN_AUTH_KEY_MGMT_UNSPEC_802_1X); |
| pos += RSN_SELECTOR_LEN; |
| num_suites++; |
| } |
| if (conf->wpa_key_mgmt & WPA_KEY_MGMT_PSK) { |
| RSN_SELECTOR_PUT(pos, RSN_AUTH_KEY_MGMT_PSK_OVER_802_1X); |
| pos += RSN_SELECTOR_LEN; |
| num_suites++; |
| } |
| #ifdef CONFIG_IEEE80211R |
| if (conf->wpa_key_mgmt & WPA_KEY_MGMT_FT_IEEE8021X) { |
| RSN_SELECTOR_PUT(pos, RSN_AUTH_KEY_MGMT_FT_802_1X); |
| pos += RSN_SELECTOR_LEN; |
| num_suites++; |
| } |
| if (conf->wpa_key_mgmt & WPA_KEY_MGMT_FT_PSK) { |
| RSN_SELECTOR_PUT(pos, RSN_AUTH_KEY_MGMT_FT_PSK); |
| pos += RSN_SELECTOR_LEN; |
| num_suites++; |
| } |
| #endif /* CONFIG_IEEE80211R */ |
| #ifdef CONFIG_IEEE80211W |
| if (conf->wpa_key_mgmt & WPA_KEY_MGMT_IEEE8021X_SHA256) { |
| RSN_SELECTOR_PUT(pos, RSN_AUTH_KEY_MGMT_802_1X_SHA256); |
| pos += RSN_SELECTOR_LEN; |
| num_suites++; |
| } |
| if (conf->wpa_key_mgmt & WPA_KEY_MGMT_PSK_SHA256) { |
| RSN_SELECTOR_PUT(pos, RSN_AUTH_KEY_MGMT_PSK_SHA256); |
| pos += RSN_SELECTOR_LEN; |
| num_suites++; |
| } |
| #endif /* CONFIG_IEEE80211W */ |
| |
| #ifdef CONFIG_RSN_TESTING |
| if (rsn_testing) { |
| RSN_SELECTOR_PUT(pos, RSN_SELECTOR(0x12, 0x34, 0x56, 2)); |
| pos += RSN_SELECTOR_LEN; |
| num_suites++; |
| } |
| #endif /* CONFIG_RSN_TESTING */ |
| |
| if (num_suites == 0) { |
| wpa_printf(MSG_DEBUG, "Invalid key management type (%d).", |
| conf->wpa_key_mgmt); |
| return -1; |
| } |
| WPA_PUT_LE16(count, num_suites); |
| |
| /* RSN Capabilities */ |
| capab = 0; |
| if (conf->rsn_preauth) |
| capab |= WPA_CAPABILITY_PREAUTH; |
| if (conf->peerkey) |
| capab |= WPA_CAPABILITY_PEERKEY_ENABLED; |
| if (conf->wmm_enabled) { |
| /* 4 PTKSA replay counters when using WMM */ |
| capab |= (RSN_NUM_REPLAY_COUNTERS_16 << 2); |
| } |
| #ifdef CONFIG_IEEE80211W |
| if (conf->ieee80211w != NO_MGMT_FRAME_PROTECTION) { |
| capab |= WPA_CAPABILITY_MFPC; |
| if (conf->ieee80211w == MGMT_FRAME_PROTECTION_REQUIRED) |
| capab |= WPA_CAPABILITY_MFPR; |
| } |
| #endif /* CONFIG_IEEE80211W */ |
| #ifdef CONFIG_RSN_TESTING |
| if (rsn_testing) |
| capab |= BIT(8) | BIT(14) | BIT(15); |
| #endif /* CONFIG_RSN_TESTING */ |
| WPA_PUT_LE16(pos, capab); |
| pos += 2; |
| |
| if (pmkid) { |
| if (pos + 2 + PMKID_LEN > buf + len) |
| return -1; |
| /* PMKID Count */ |
| WPA_PUT_LE16(pos, 1); |
| pos += 2; |
| os_memcpy(pos, pmkid, PMKID_LEN); |
| pos += PMKID_LEN; |
| } |
| |
| #ifdef CONFIG_IEEE80211W |
| if (conf->ieee80211w != NO_MGMT_FRAME_PROTECTION) { |
| if (pos + 2 + 4 > buf + len) |
| return -1; |
| if (pmkid == NULL) { |
| /* PMKID Count */ |
| WPA_PUT_LE16(pos, 0); |
| pos += 2; |
| } |
| |
| /* Management Group Cipher Suite */ |
| RSN_SELECTOR_PUT(pos, RSN_CIPHER_SUITE_AES_128_CMAC); |
| pos += RSN_SELECTOR_LEN; |
| } |
| #endif /* CONFIG_IEEE80211W */ |
| |
| #ifdef CONFIG_RSN_TESTING |
| if (rsn_testing) { |
| /* |
| * Fill in any defined fields and add extra data to the end of |
| * the element. |
| */ |
| int pmkid_count_set = pmkid != NULL; |
| if (conf->ieee80211w != NO_MGMT_FRAME_PROTECTION) |
| pmkid_count_set = 1; |
| /* PMKID Count */ |
| WPA_PUT_LE16(pos, 0); |
| pos += 2; |
| if (conf->ieee80211w == NO_MGMT_FRAME_PROTECTION) { |
| /* Management Group Cipher Suite */ |
| RSN_SELECTOR_PUT(pos, RSN_CIPHER_SUITE_AES_128_CMAC); |
| pos += RSN_SELECTOR_LEN; |
| } |
| |
| os_memset(pos, 0x12, 17); |
| pos += 17; |
| } |
| #endif /* CONFIG_RSN_TESTING */ |
| |
| hdr->len = (pos - buf) - 2; |
| |
| return pos - buf; |
| } |
| |
| |
| int wpa_auth_gen_wpa_ie(struct wpa_authenticator *wpa_auth) |
| { |
| u8 *pos, buf[128]; |
| int res; |
| |
| pos = buf; |
| |
| if (wpa_auth->conf.wpa & WPA_PROTO_RSN) { |
| res = wpa_write_rsn_ie(&wpa_auth->conf, |
| pos, buf + sizeof(buf) - pos, NULL); |
| if (res < 0) |
| return res; |
| pos += res; |
| } |
| #ifdef CONFIG_IEEE80211R |
| if (wpa_auth->conf.wpa_key_mgmt & |
| (WPA_KEY_MGMT_FT_IEEE8021X | WPA_KEY_MGMT_FT_PSK)) { |
| res = wpa_write_mdie(&wpa_auth->conf, pos, |
| buf + sizeof(buf) - pos); |
| if (res < 0) |
| return res; |
| pos += res; |
| } |
| #endif /* CONFIG_IEEE80211R */ |
| if (wpa_auth->conf.wpa & WPA_PROTO_WPA) { |
| res = wpa_write_wpa_ie(&wpa_auth->conf, |
| pos, buf + sizeof(buf) - pos); |
| if (res < 0) |
| return res; |
| pos += res; |
| } |
| |
| os_free(wpa_auth->wpa_ie); |
| wpa_auth->wpa_ie = os_malloc(pos - buf); |
| if (wpa_auth->wpa_ie == NULL) |
| return -1; |
| os_memcpy(wpa_auth->wpa_ie, buf, pos - buf); |
| wpa_auth->wpa_ie_len = pos - buf; |
| |
| return 0; |
| } |
| |
| |
| u8 * wpa_add_kde(u8 *pos, u32 kde, const u8 *data, size_t data_len, |
| const u8 *data2, size_t data2_len) |
| { |
| *pos++ = WLAN_EID_VENDOR_SPECIFIC; |
| *pos++ = RSN_SELECTOR_LEN + data_len + data2_len; |
| RSN_SELECTOR_PUT(pos, kde); |
| pos += RSN_SELECTOR_LEN; |
| os_memcpy(pos, data, data_len); |
| pos += data_len; |
| if (data2) { |
| os_memcpy(pos, data2, data2_len); |
| pos += data2_len; |
| } |
| return pos; |
| } |
| |
| |
| struct wpa_auth_okc_iter_data { |
| struct rsn_pmksa_cache_entry *pmksa; |
| const u8 *aa; |
| const u8 *spa; |
| const u8 *pmkid; |
| }; |
| |
| |
| static int wpa_auth_okc_iter(struct wpa_authenticator *a, void *ctx) |
| { |
| struct wpa_auth_okc_iter_data *data = ctx; |
| data->pmksa = pmksa_cache_get_okc(a->pmksa, data->aa, data->spa, |
| data->pmkid); |
| if (data->pmksa) |
| return 1; |
| return 0; |
| } |
| |
| |
| int wpa_validate_wpa_ie(struct wpa_authenticator *wpa_auth, |
| struct wpa_state_machine *sm, |
| const u8 *wpa_ie, size_t wpa_ie_len, |
| const u8 *mdie, size_t mdie_len) |
| { |
| struct wpa_ie_data data; |
| int ciphers, key_mgmt, res, version; |
| u32 selector; |
| size_t i; |
| const u8 *pmkid = NULL; |
| |
| if (wpa_auth == NULL || sm == NULL) |
| return WPA_NOT_ENABLED; |
| |
| if (wpa_ie == NULL || wpa_ie_len < 1) |
| return WPA_INVALID_IE; |
| |
| if (wpa_ie[0] == WLAN_EID_RSN) |
| version = WPA_PROTO_RSN; |
| else |
| version = WPA_PROTO_WPA; |
| |
| if (!(wpa_auth->conf.wpa & version)) { |
| wpa_printf(MSG_DEBUG, "Invalid WPA proto (%d) from " MACSTR, |
| version, MAC2STR(sm->addr)); |
| return WPA_INVALID_PROTO; |
| } |
| |
| if (version == WPA_PROTO_RSN) { |
| res = wpa_parse_wpa_ie_rsn(wpa_ie, wpa_ie_len, &data); |
| |
| selector = RSN_AUTH_KEY_MGMT_UNSPEC_802_1X; |
| if (0) { |
| } |
| #ifdef CONFIG_IEEE80211R |
| else if (data.key_mgmt & WPA_KEY_MGMT_FT_IEEE8021X) |
| selector = RSN_AUTH_KEY_MGMT_FT_802_1X; |
| else if (data.key_mgmt & WPA_KEY_MGMT_FT_PSK) |
| selector = RSN_AUTH_KEY_MGMT_FT_PSK; |
| #endif /* CONFIG_IEEE80211R */ |
| #ifdef CONFIG_IEEE80211W |
| else if (data.key_mgmt & WPA_KEY_MGMT_IEEE8021X_SHA256) |
| selector = RSN_AUTH_KEY_MGMT_802_1X_SHA256; |
| else if (data.key_mgmt & WPA_KEY_MGMT_PSK_SHA256) |
| selector = RSN_AUTH_KEY_MGMT_PSK_SHA256; |
| #endif /* CONFIG_IEEE80211W */ |
| else if (data.key_mgmt & WPA_KEY_MGMT_IEEE8021X) |
| selector = RSN_AUTH_KEY_MGMT_UNSPEC_802_1X; |
| else if (data.key_mgmt & WPA_KEY_MGMT_PSK) |
| selector = RSN_AUTH_KEY_MGMT_PSK_OVER_802_1X; |
| wpa_auth->dot11RSNAAuthenticationSuiteSelected = selector; |
| |
| selector = RSN_CIPHER_SUITE_CCMP; |
| if (data.pairwise_cipher & WPA_CIPHER_CCMP) |
| selector = RSN_CIPHER_SUITE_CCMP; |
| else if (data.pairwise_cipher & WPA_CIPHER_TKIP) |
| selector = RSN_CIPHER_SUITE_TKIP; |
| else if (data.pairwise_cipher & WPA_CIPHER_WEP104) |
| selector = RSN_CIPHER_SUITE_WEP104; |
| else if (data.pairwise_cipher & WPA_CIPHER_WEP40) |
| selector = RSN_CIPHER_SUITE_WEP40; |
| else if (data.pairwise_cipher & WPA_CIPHER_NONE) |
| selector = RSN_CIPHER_SUITE_NONE; |
| wpa_auth->dot11RSNAPairwiseCipherSelected = selector; |
| |
| selector = RSN_CIPHER_SUITE_CCMP; |
| if (data.group_cipher & WPA_CIPHER_CCMP) |
| selector = RSN_CIPHER_SUITE_CCMP; |
| else if (data.group_cipher & WPA_CIPHER_TKIP) |
| selector = RSN_CIPHER_SUITE_TKIP; |
| else if (data.group_cipher & WPA_CIPHER_WEP104) |
| selector = RSN_CIPHER_SUITE_WEP104; |
| else if (data.group_cipher & WPA_CIPHER_WEP40) |
| selector = RSN_CIPHER_SUITE_WEP40; |
| else if (data.group_cipher & WPA_CIPHER_NONE) |
| selector = RSN_CIPHER_SUITE_NONE; |
| wpa_auth->dot11RSNAGroupCipherSelected = selector; |
| } else { |
| res = wpa_parse_wpa_ie_wpa(wpa_ie, wpa_ie_len, &data); |
| |
| selector = WPA_AUTH_KEY_MGMT_UNSPEC_802_1X; |
| if (data.key_mgmt & WPA_KEY_MGMT_IEEE8021X) |
| selector = WPA_AUTH_KEY_MGMT_UNSPEC_802_1X; |
| else if (data.key_mgmt & WPA_KEY_MGMT_PSK) |
| selector = WPA_AUTH_KEY_MGMT_PSK_OVER_802_1X; |
| wpa_auth->dot11RSNAAuthenticationSuiteSelected = selector; |
| |
| selector = WPA_CIPHER_SUITE_TKIP; |
| if (data.pairwise_cipher & WPA_CIPHER_CCMP) |
| selector = WPA_CIPHER_SUITE_CCMP; |
| else if (data.pairwise_cipher & WPA_CIPHER_TKIP) |
| selector = WPA_CIPHER_SUITE_TKIP; |
| else if (data.pairwise_cipher & WPA_CIPHER_WEP104) |
| selector = WPA_CIPHER_SUITE_WEP104; |
| else if (data.pairwise_cipher & WPA_CIPHER_WEP40) |
| selector = WPA_CIPHER_SUITE_WEP40; |
| else if (data.pairwise_cipher & WPA_CIPHER_NONE) |
| selector = WPA_CIPHER_SUITE_NONE; |
| wpa_auth->dot11RSNAPairwiseCipherSelected = selector; |
| |
| selector = WPA_CIPHER_SUITE_TKIP; |
| if (data.group_cipher & WPA_CIPHER_CCMP) |
| selector = WPA_CIPHER_SUITE_CCMP; |
| else if (data.group_cipher & WPA_CIPHER_TKIP) |
| selector = WPA_CIPHER_SUITE_TKIP; |
| else if (data.group_cipher & WPA_CIPHER_WEP104) |
| selector = WPA_CIPHER_SUITE_WEP104; |
| else if (data.group_cipher & WPA_CIPHER_WEP40) |
| selector = WPA_CIPHER_SUITE_WEP40; |
| else if (data.group_cipher & WPA_CIPHER_NONE) |
| selector = WPA_CIPHER_SUITE_NONE; |
| wpa_auth->dot11RSNAGroupCipherSelected = selector; |
| } |
| if (res) { |
| wpa_printf(MSG_DEBUG, "Failed to parse WPA/RSN IE from " |
| MACSTR " (res=%d)", MAC2STR(sm->addr), res); |
| wpa_hexdump(MSG_DEBUG, "WPA/RSN IE", wpa_ie, wpa_ie_len); |
| return WPA_INVALID_IE; |
| } |
| |
| if (data.group_cipher != wpa_auth->conf.wpa_group) { |
| wpa_printf(MSG_DEBUG, "Invalid WPA group cipher (0x%x) from " |
| MACSTR, data.group_cipher, MAC2STR(sm->addr)); |
| return WPA_INVALID_GROUP; |
| } |
| |
| key_mgmt = data.key_mgmt & wpa_auth->conf.wpa_key_mgmt; |
| if (!key_mgmt) { |
| wpa_printf(MSG_DEBUG, "Invalid WPA key mgmt (0x%x) from " |
| MACSTR, data.key_mgmt, MAC2STR(sm->addr)); |
| return WPA_INVALID_AKMP; |
| } |
| if (0) { |
| } |
| #ifdef CONFIG_IEEE80211R |
| else if (key_mgmt & WPA_KEY_MGMT_FT_IEEE8021X) |
| sm->wpa_key_mgmt = WPA_KEY_MGMT_FT_IEEE8021X; |
| else if (key_mgmt & WPA_KEY_MGMT_FT_PSK) |
| sm->wpa_key_mgmt = WPA_KEY_MGMT_FT_PSK; |
| #endif /* CONFIG_IEEE80211R */ |
| #ifdef CONFIG_IEEE80211W |
| else if (key_mgmt & WPA_KEY_MGMT_IEEE8021X_SHA256) |
| sm->wpa_key_mgmt = WPA_KEY_MGMT_IEEE8021X_SHA256; |
| else if (key_mgmt & WPA_KEY_MGMT_PSK_SHA256) |
| sm->wpa_key_mgmt = WPA_KEY_MGMT_PSK_SHA256; |
| #endif /* CONFIG_IEEE80211W */ |
| else if (key_mgmt & WPA_KEY_MGMT_IEEE8021X) |
| sm->wpa_key_mgmt = WPA_KEY_MGMT_IEEE8021X; |
| else |
| sm->wpa_key_mgmt = WPA_KEY_MGMT_PSK; |
| |
| if (version == WPA_PROTO_RSN) |
| ciphers = data.pairwise_cipher & wpa_auth->conf.rsn_pairwise; |
| else |
| ciphers = data.pairwise_cipher & wpa_auth->conf.wpa_pairwise; |
| if (!ciphers) { |
| wpa_printf(MSG_DEBUG, "Invalid %s pairwise cipher (0x%x) " |
| "from " MACSTR, |
| version == WPA_PROTO_RSN ? "RSN" : "WPA", |
| data.pairwise_cipher, MAC2STR(sm->addr)); |
| return WPA_INVALID_PAIRWISE; |
| } |
| |
| #ifdef CONFIG_IEEE80211W |
| if (wpa_auth->conf.ieee80211w == MGMT_FRAME_PROTECTION_REQUIRED) { |
| if (!(data.capabilities & WPA_CAPABILITY_MFPC)) { |
| wpa_printf(MSG_DEBUG, "Management frame protection " |
| "required, but client did not enable it"); |
| return WPA_MGMT_FRAME_PROTECTION_VIOLATION; |
| } |
| |
| if (ciphers & WPA_CIPHER_TKIP) { |
| wpa_printf(MSG_DEBUG, "Management frame protection " |
| "cannot use TKIP"); |
| return WPA_MGMT_FRAME_PROTECTION_VIOLATION; |
| } |
| |
| if (data.mgmt_group_cipher != WPA_CIPHER_AES_128_CMAC) { |
| wpa_printf(MSG_DEBUG, "Unsupported management group " |
| "cipher %d", data.mgmt_group_cipher); |
| return WPA_INVALID_MGMT_GROUP_CIPHER; |
| } |
| } |
| |
| if (wpa_auth->conf.ieee80211w == NO_MGMT_FRAME_PROTECTION || |
| !(data.capabilities & WPA_CAPABILITY_MFPC)) |
| sm->mgmt_frame_prot = 0; |
| else |
| sm->mgmt_frame_prot = 1; |
| #endif /* CONFIG_IEEE80211W */ |
| |
| #ifdef CONFIG_IEEE80211R |
| if (wpa_key_mgmt_ft(sm->wpa_key_mgmt)) { |
| if (mdie == NULL || mdie_len < MOBILITY_DOMAIN_ID_LEN + 1) { |
| wpa_printf(MSG_DEBUG, "RSN: Trying to use FT, but " |
| "MDIE not included"); |
| return WPA_INVALID_MDIE; |
| } |
| if (os_memcmp(mdie, wpa_auth->conf.mobility_domain, |
| MOBILITY_DOMAIN_ID_LEN) != 0) { |
| wpa_hexdump(MSG_DEBUG, "RSN: Attempted to use unknown " |
| "MDIE", mdie, MOBILITY_DOMAIN_ID_LEN); |
| return WPA_INVALID_MDIE; |
| } |
| } |
| #endif /* CONFIG_IEEE80211R */ |
| |
| if (ciphers & WPA_CIPHER_CCMP) |
| sm->pairwise = WPA_CIPHER_CCMP; |
| else |
| sm->pairwise = WPA_CIPHER_TKIP; |
| |
| /* TODO: clear WPA/WPA2 state if STA changes from one to another */ |
| if (wpa_ie[0] == WLAN_EID_RSN) |
| sm->wpa = WPA_VERSION_WPA2; |
| else |
| sm->wpa = WPA_VERSION_WPA; |
| |
| sm->pmksa = NULL; |
| for (i = 0; i < data.num_pmkid; i++) { |
| wpa_hexdump(MSG_DEBUG, "RSN IE: STA PMKID", |
| &data.pmkid[i * PMKID_LEN], PMKID_LEN); |
| sm->pmksa = pmksa_cache_auth_get(wpa_auth->pmksa, sm->addr, |
| &data.pmkid[i * PMKID_LEN]); |
| if (sm->pmksa) { |
| pmkid = sm->pmksa->pmkid; |
| break; |
| } |
| } |
| for (i = 0; sm->pmksa == NULL && wpa_auth->conf.okc && |
| i < data.num_pmkid; i++) { |
| struct wpa_auth_okc_iter_data idata; |
| idata.pmksa = NULL; |
| idata.aa = wpa_auth->addr; |
| idata.spa = sm->addr; |
| idata.pmkid = &data.pmkid[i * PMKID_LEN]; |
| wpa_auth_for_each_auth(wpa_auth, wpa_auth_okc_iter, &idata); |
| if (idata.pmksa) { |
| wpa_auth_vlogger(wpa_auth, sm->addr, LOGGER_DEBUG, |
| "OKC match for PMKID"); |
| sm->pmksa = pmksa_cache_add_okc(wpa_auth->pmksa, |
| idata.pmksa, |
| wpa_auth->addr, |
| idata.pmkid); |
| pmkid = idata.pmkid; |
| break; |
| } |
| } |
| if (sm->pmksa) { |
| wpa_auth_vlogger(wpa_auth, sm->addr, LOGGER_DEBUG, |
| "PMKID found from PMKSA cache " |
| "eap_type=%d vlan_id=%d", |
| sm->pmksa->eap_type_authsrv, |
| sm->pmksa->vlan_id); |
| os_memcpy(wpa_auth->dot11RSNAPMKIDUsed, pmkid, PMKID_LEN); |
| } |
| |
| if (sm->wpa_ie == NULL || sm->wpa_ie_len < wpa_ie_len) { |
| os_free(sm->wpa_ie); |
| sm->wpa_ie = os_malloc(wpa_ie_len); |
| if (sm->wpa_ie == NULL) |
| return WPA_ALLOC_FAIL; |
| } |
| os_memcpy(sm->wpa_ie, wpa_ie, wpa_ie_len); |
| sm->wpa_ie_len = wpa_ie_len; |
| |
| return WPA_IE_OK; |
| } |
| |
| |
| /** |
| * wpa_parse_generic - Parse EAPOL-Key Key Data Generic IEs |
| * @pos: Pointer to the IE header |
| * @end: Pointer to the end of the Key Data buffer |
| * @ie: Pointer to parsed IE data |
| * Returns: 0 on success, 1 if end mark is found, -1 on failure |
| */ |
| static int wpa_parse_generic(const u8 *pos, const u8 *end, |
| struct wpa_eapol_ie_parse *ie) |
| { |
| if (pos[1] == 0) |
| return 1; |
| |
| if (pos[1] >= 6 && |
| RSN_SELECTOR_GET(pos + 2) == WPA_OUI_TYPE && |
| pos[2 + WPA_SELECTOR_LEN] == 1 && |
| pos[2 + WPA_SELECTOR_LEN + 1] == 0) { |
| ie->wpa_ie = pos; |
| ie->wpa_ie_len = pos[1] + 2; |
| return 0; |
| } |
| |
| if (pos + 1 + RSN_SELECTOR_LEN < end && |
| pos[1] >= RSN_SELECTOR_LEN + PMKID_LEN && |
| RSN_SELECTOR_GET(pos + 2) == RSN_KEY_DATA_PMKID) { |
| ie->pmkid = pos + 2 + RSN_SELECTOR_LEN; |
| return 0; |
| } |
| |
| if (pos[1] > RSN_SELECTOR_LEN + 2 && |
| RSN_SELECTOR_GET(pos + 2) == RSN_KEY_DATA_GROUPKEY) { |
| ie->gtk = pos + 2 + RSN_SELECTOR_LEN; |
| ie->gtk_len = pos[1] - RSN_SELECTOR_LEN; |
| return 0; |
| } |
| |
| if (pos[1] > RSN_SELECTOR_LEN + 2 && |
| RSN_SELECTOR_GET(pos + 2) == RSN_KEY_DATA_MAC_ADDR) { |
| ie->mac_addr = pos + 2 + RSN_SELECTOR_LEN; |
| ie->mac_addr_len = pos[1] - RSN_SELECTOR_LEN; |
| return 0; |
| } |
| |
| #ifdef CONFIG_PEERKEY |
| if (pos[1] > RSN_SELECTOR_LEN + 2 && |
| RSN_SELECTOR_GET(pos + 2) == RSN_KEY_DATA_SMK) { |
| ie->smk = pos + 2 + RSN_SELECTOR_LEN; |
| ie->smk_len = pos[1] - RSN_SELECTOR_LEN; |
| return 0; |
| } |
| |
| 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; |
| 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; |
| 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; |
| 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; |
| return 0; |
| } |
| #endif /* CONFIG_IEEE80211W */ |
| |
| return 0; |
| } |
| |
| |
| /** |
| * wpa_parse_kde_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_parse_kde_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; pos + 1 < end; pos += 2 + pos[1]) { |
| if (pos[0] == 0xdd && |
| ((pos == buf + len - 1) || pos[1] == 0)) { |
| /* Ignore padding */ |
| break; |
| } |
| if (pos + 2 + pos[1] > end) { |
| 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; |
| #ifdef CONFIG_IEEE80211R |
| } else if (*pos == WLAN_EID_MOBILITY_DOMAIN) { |
| ie->mdie = pos; |
| ie->mdie_len = pos[1] + 2; |
| } else if (*pos == WLAN_EID_FAST_BSS_TRANSITION) { |
| ie->ftie = pos; |
| ie->ftie_len = pos[1] + 2; |
| #endif /* CONFIG_IEEE80211R */ |
| } else if (*pos == WLAN_EID_VENDOR_SPECIFIC) { |
| ret = wpa_parse_generic(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; |
| } |
| |
| |
| int wpa_auth_uses_mfp(struct wpa_state_machine *sm) |
| { |
| return sm ? sm->mgmt_frame_prot : 0; |
| } |