diff options
Diffstat (limited to 'freebsd/contrib/wpa/src/rsn_supp/wpa_ie.c')
| -rw-r--r-- | freebsd/contrib/wpa/src/rsn_supp/wpa_ie.c | 607 |
1 files changed, 607 insertions, 0 deletions
diff --git a/freebsd/contrib/wpa/src/rsn_supp/wpa_ie.c b/freebsd/contrib/wpa/src/rsn_supp/wpa_ie.c new file mode 100644 index 00000000..2a22d7de --- /dev/null +++ b/freebsd/contrib/wpa/src/rsn_supp/wpa_ie.c @@ -0,0 +1,607 @@ +#include <machine/rtems-bsd-user-space.h> + +/* + * wpa_supplicant - WPA/RSN IE and KDE processing + * Copyright (c) 2003-2015, Jouni Malinen <j@w1.fi> + * + * This software may be distributed under the terms of the BSD license. + * See README for more details. + */ + +#include "includes.h" + +#include "common.h" +#include "wpa.h" +#include "pmksa_cache.h" +#include "common/ieee802_11_defs.h" +#include "wpa_i.h" +#include "wpa_ie.h" + + +/** + * wpa_parse_wpa_ie - Parse WPA/RSN IE + * @wpa_ie: Pointer to WPA or RSN IE + * @wpa_ie_len: Length of the WPA/RSN IE + * @data: Pointer to data area for parsing results + * Returns: 0 on success, -1 on failure + * + * Parse the contents of WPA or RSN IE and write the parsed data into data. + */ +int wpa_parse_wpa_ie(const u8 *wpa_ie, size_t wpa_ie_len, + struct wpa_ie_data *data) +{ + if (wpa_ie_len >= 1 && wpa_ie[0] == WLAN_EID_RSN) + return wpa_parse_wpa_ie_rsn(wpa_ie, wpa_ie_len, data); + if (wpa_ie_len >= 6 && wpa_ie[0] == WLAN_EID_VENDOR_SPECIFIC && + wpa_ie[1] >= 4 && WPA_GET_BE32(&wpa_ie[2]) == OSEN_IE_VENDOR_TYPE) + return wpa_parse_wpa_ie_rsn(wpa_ie, wpa_ie_len, data); + else + return wpa_parse_wpa_ie_wpa(wpa_ie, wpa_ie_len, data); +} + + +static int wpa_gen_wpa_ie_wpa(u8 *wpa_ie, size_t wpa_ie_len, + int pairwise_cipher, int group_cipher, + int key_mgmt) +{ + u8 *pos; + struct wpa_ie_hdr *hdr; + u32 suite; + + if (wpa_ie_len < sizeof(*hdr) + WPA_SELECTOR_LEN + + 2 + WPA_SELECTOR_LEN + 2 + WPA_SELECTOR_LEN) + return -1; + + hdr = (struct wpa_ie_hdr *) wpa_ie; + 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); + + suite = wpa_cipher_to_suite(WPA_PROTO_WPA, group_cipher); + if (suite == 0) { + wpa_printf(MSG_WARNING, "Invalid group cipher (%d).", + group_cipher); + return -1; + } + RSN_SELECTOR_PUT(pos, suite); + pos += WPA_SELECTOR_LEN; + + *pos++ = 1; + *pos++ = 0; + suite = wpa_cipher_to_suite(WPA_PROTO_WPA, pairwise_cipher); + if (suite == 0 || + (!wpa_cipher_valid_pairwise(pairwise_cipher) && + pairwise_cipher != WPA_CIPHER_NONE)) { + wpa_printf(MSG_WARNING, "Invalid pairwise cipher (%d).", + pairwise_cipher); + return -1; + } + RSN_SELECTOR_PUT(pos, suite); + pos += WPA_SELECTOR_LEN; + + *pos++ = 1; + *pos++ = 0; + if (key_mgmt == WPA_KEY_MGMT_IEEE8021X) { + RSN_SELECTOR_PUT(pos, WPA_AUTH_KEY_MGMT_UNSPEC_802_1X); + } else if (key_mgmt == WPA_KEY_MGMT_PSK) { + RSN_SELECTOR_PUT(pos, WPA_AUTH_KEY_MGMT_PSK_OVER_802_1X); + } else if (key_mgmt == WPA_KEY_MGMT_WPA_NONE) { + RSN_SELECTOR_PUT(pos, WPA_AUTH_KEY_MGMT_NONE); + } else if (key_mgmt == WPA_KEY_MGMT_CCKM) { + RSN_SELECTOR_PUT(pos, WPA_AUTH_KEY_MGMT_CCKM); + } else { + wpa_printf(MSG_WARNING, "Invalid key management type (%d).", + key_mgmt); + return -1; + } + pos += WPA_SELECTOR_LEN; + + /* WPA Capabilities; use defaults, so no need to include it */ + + hdr->len = (pos - wpa_ie) - 2; + + WPA_ASSERT((size_t) (pos - wpa_ie) <= wpa_ie_len); + + return pos - wpa_ie; +} + + +static int wpa_gen_wpa_ie_rsn(u8 *rsn_ie, size_t rsn_ie_len, + int pairwise_cipher, int group_cipher, + int key_mgmt, int mgmt_group_cipher, + struct wpa_sm *sm) +{ + u8 *pos; + struct rsn_ie_hdr *hdr; + u16 capab; + u32 suite; + + if (rsn_ie_len < sizeof(*hdr) + RSN_SELECTOR_LEN + + 2 + RSN_SELECTOR_LEN + 2 + RSN_SELECTOR_LEN + 2 + + (sm->cur_pmksa ? 2 + PMKID_LEN : 0)) { + wpa_printf(MSG_DEBUG, "RSN: Too short IE buffer (%lu bytes)", + (unsigned long) rsn_ie_len); + return -1; + } + + hdr = (struct rsn_ie_hdr *) rsn_ie; + hdr->elem_id = WLAN_EID_RSN; + WPA_PUT_LE16(hdr->version, RSN_VERSION); + pos = (u8 *) (hdr + 1); + + suite = wpa_cipher_to_suite(WPA_PROTO_RSN, group_cipher); + if (suite == 0) { + wpa_printf(MSG_WARNING, "Invalid group cipher (%d).", + group_cipher); + return -1; + } + RSN_SELECTOR_PUT(pos, suite); + pos += RSN_SELECTOR_LEN; + + *pos++ = 1; + *pos++ = 0; + suite = wpa_cipher_to_suite(WPA_PROTO_RSN, pairwise_cipher); + if (suite == 0 || + (!wpa_cipher_valid_pairwise(pairwise_cipher) && + pairwise_cipher != WPA_CIPHER_NONE)) { + wpa_printf(MSG_WARNING, "Invalid pairwise cipher (%d).", + pairwise_cipher); + return -1; + } + RSN_SELECTOR_PUT(pos, suite); + pos += RSN_SELECTOR_LEN; + + *pos++ = 1; + *pos++ = 0; + if (key_mgmt == WPA_KEY_MGMT_IEEE8021X) { + RSN_SELECTOR_PUT(pos, RSN_AUTH_KEY_MGMT_UNSPEC_802_1X); + } else if (key_mgmt == WPA_KEY_MGMT_PSK) { + RSN_SELECTOR_PUT(pos, RSN_AUTH_KEY_MGMT_PSK_OVER_802_1X); + } else if (key_mgmt == WPA_KEY_MGMT_CCKM) { + RSN_SELECTOR_PUT(pos, RSN_AUTH_KEY_MGMT_CCKM); +#ifdef CONFIG_IEEE80211R + } else if (key_mgmt == WPA_KEY_MGMT_FT_IEEE8021X) { + RSN_SELECTOR_PUT(pos, RSN_AUTH_KEY_MGMT_FT_802_1X); + } else if (key_mgmt == WPA_KEY_MGMT_FT_PSK) { + RSN_SELECTOR_PUT(pos, RSN_AUTH_KEY_MGMT_FT_PSK); +#endif /* CONFIG_IEEE80211R */ +#ifdef CONFIG_IEEE80211W + } else if (key_mgmt == WPA_KEY_MGMT_IEEE8021X_SHA256) { + RSN_SELECTOR_PUT(pos, RSN_AUTH_KEY_MGMT_802_1X_SHA256); + } else if (key_mgmt == WPA_KEY_MGMT_PSK_SHA256) { + RSN_SELECTOR_PUT(pos, RSN_AUTH_KEY_MGMT_PSK_SHA256); +#endif /* CONFIG_IEEE80211W */ +#ifdef CONFIG_SAE + } else if (key_mgmt == WPA_KEY_MGMT_SAE) { + RSN_SELECTOR_PUT(pos, RSN_AUTH_KEY_MGMT_SAE); + } else if (key_mgmt == WPA_KEY_MGMT_FT_SAE) { + RSN_SELECTOR_PUT(pos, RSN_AUTH_KEY_MGMT_FT_SAE); +#endif /* CONFIG_SAE */ + } else if (key_mgmt == WPA_KEY_MGMT_IEEE8021X_SUITE_B_192) { + RSN_SELECTOR_PUT(pos, RSN_AUTH_KEY_MGMT_802_1X_SUITE_B_192); + } else if (key_mgmt == WPA_KEY_MGMT_IEEE8021X_SUITE_B) { + RSN_SELECTOR_PUT(pos, RSN_AUTH_KEY_MGMT_802_1X_SUITE_B); + } else { + wpa_printf(MSG_WARNING, "Invalid key management type (%d).", + key_mgmt); + return -1; + } + pos += RSN_SELECTOR_LEN; + + /* RSN Capabilities */ + capab = 0; +#ifdef CONFIG_IEEE80211W + if (sm->mfp) + capab |= WPA_CAPABILITY_MFPC; + if (sm->mfp == 2) + capab |= WPA_CAPABILITY_MFPR; +#endif /* CONFIG_IEEE80211W */ + WPA_PUT_LE16(pos, capab); + pos += 2; + + if (sm->cur_pmksa) { + /* PMKID Count (2 octets, little endian) */ + *pos++ = 1; + *pos++ = 0; + /* PMKID */ + os_memcpy(pos, sm->cur_pmksa->pmkid, PMKID_LEN); + pos += PMKID_LEN; + } + +#ifdef CONFIG_IEEE80211W + if (wpa_cipher_valid_mgmt_group(mgmt_group_cipher)) { + if (!sm->cur_pmksa) { + /* PMKID Count */ + WPA_PUT_LE16(pos, 0); + pos += 2; + } + + /* Management Group Cipher Suite */ + RSN_SELECTOR_PUT(pos, wpa_cipher_to_suite(WPA_PROTO_RSN, + mgmt_group_cipher)); + pos += RSN_SELECTOR_LEN; + } +#endif /* CONFIG_IEEE80211W */ + + hdr->len = (pos - rsn_ie) - 2; + + WPA_ASSERT((size_t) (pos - rsn_ie) <= rsn_ie_len); + + return pos - rsn_ie; +} + + +#ifdef CONFIG_HS20 +static int wpa_gen_wpa_ie_osen(u8 *wpa_ie, size_t wpa_ie_len, + int pairwise_cipher, int group_cipher, + int key_mgmt) +{ + u8 *pos, *len; + u32 suite; + + if (wpa_ie_len < 2 + 4 + RSN_SELECTOR_LEN + + 2 + RSN_SELECTOR_LEN + 2 + RSN_SELECTOR_LEN) + return -1; + + pos = wpa_ie; + *pos++ = WLAN_EID_VENDOR_SPECIFIC; + len = pos++; /* to be filled */ + WPA_PUT_BE24(pos, OUI_WFA); + pos += 3; + *pos++ = HS20_OSEN_OUI_TYPE; + + /* Group Data Cipher Suite */ + suite = wpa_cipher_to_suite(WPA_PROTO_RSN, group_cipher); + if (suite == 0) { + wpa_printf(MSG_WARNING, "Invalid group cipher (%d).", + group_cipher); + return -1; + } + RSN_SELECTOR_PUT(pos, suite); + pos += RSN_SELECTOR_LEN; + + /* Pairwise Cipher Suite Count and List */ + WPA_PUT_LE16(pos, 1); + pos += 2; + suite = wpa_cipher_to_suite(WPA_PROTO_RSN, pairwise_cipher); + if (suite == 0 || + (!wpa_cipher_valid_pairwise(pairwise_cipher) && + pairwise_cipher != WPA_CIPHER_NONE)) { + wpa_printf(MSG_WARNING, "Invalid pairwise cipher (%d).", + pairwise_cipher); + return -1; + } + RSN_SELECTOR_PUT(pos, suite); + pos += RSN_SELECTOR_LEN; + + /* AKM Suite Count and List */ + WPA_PUT_LE16(pos, 1); + pos += 2; + RSN_SELECTOR_PUT(pos, RSN_AUTH_KEY_MGMT_OSEN); + pos += RSN_SELECTOR_LEN; + + *len = pos - len - 1; + + WPA_ASSERT((size_t) (pos - wpa_ie) <= wpa_ie_len); + + return pos - wpa_ie; +} +#endif /* CONFIG_HS20 */ + + +/** + * wpa_gen_wpa_ie - Generate WPA/RSN IE based on current security policy + * @sm: Pointer to WPA state machine data from wpa_sm_init() + * @wpa_ie: Pointer to memory area for the generated WPA/RSN IE + * @wpa_ie_len: Maximum length of the generated WPA/RSN IE + * Returns: Length of the generated WPA/RSN IE or -1 on failure + */ +int wpa_gen_wpa_ie(struct wpa_sm *sm, u8 *wpa_ie, size_t wpa_ie_len) +{ + if (sm->proto == WPA_PROTO_RSN) + return wpa_gen_wpa_ie_rsn(wpa_ie, wpa_ie_len, + sm->pairwise_cipher, + sm->group_cipher, + sm->key_mgmt, sm->mgmt_group_cipher, + sm); +#ifdef CONFIG_HS20 + else if (sm->proto == WPA_PROTO_OSEN) + return wpa_gen_wpa_ie_osen(wpa_ie, wpa_ie_len, + sm->pairwise_cipher, + sm->group_cipher, + sm->key_mgmt); +#endif /* CONFIG_HS20 */ + else + return wpa_gen_wpa_ie_wpa(wpa_ie, wpa_ie_len, + sm->pairwise_cipher, + sm->group_cipher, + sm->key_mgmt); +} + + +/** + * wpa_parse_vendor_specific - Parse Vendor Specific 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_vendor_specific(const u8 *pos, const u8 *end, + struct wpa_eapol_ie_parse *ie) +{ + unsigned int oui; + + if (pos[1] < 4) { + wpa_printf(MSG_MSGDUMP, "Too short vendor specific IE ignored (len=%u)", + pos[1]); + return 1; + } + + oui = WPA_GET_BE24(&pos[2]); + if (oui == OUI_MICROSOFT && pos[5] == WMM_OUI_TYPE && pos[1] > 4) { + if (pos[6] == WMM_OUI_SUBTYPE_INFORMATION_ELEMENT) { + ie->wmm = &pos[2]; + ie->wmm_len = pos[1]; + wpa_hexdump(MSG_DEBUG, "WPA: WMM IE", + ie->wmm, ie->wmm_len); + } else if (pos[6] == WMM_OUI_SUBTYPE_PARAMETER_ELEMENT) { + ie->wmm = &pos[2]; + ie->wmm_len = pos[1]; + wpa_hexdump(MSG_DEBUG, "WPA: WMM Parameter Element", + ie->wmm, ie->wmm_len); + } + } + return 0; +} + + +/** + * 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; + wpa_hexdump(MSG_DEBUG, "WPA: WPA IE in EAPOL-Key", + ie->wpa_ie, ie->wpa_ie_len); + 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; + wpa_hexdump(MSG_DEBUG, "WPA: PMKID in EAPOL-Key", + pos, pos[1] + 2); + 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; + wpa_hexdump_key(MSG_DEBUG, "WPA: GTK in EAPOL-Key", + pos, pos[1] + 2); + 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; + wpa_hexdump(MSG_DEBUG, "WPA: MAC Address in EAPOL-Key", + pos, pos[1] + 2); + 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; + wpa_hexdump_key(MSG_DEBUG, "WPA: SMK in EAPOL-Key", + pos, pos[1] + 2); + 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; + 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; 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; + 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; +} |