+++ /dev/null
-/*
- * hostapd / IEEE 802.11 Management
- * Copyright (c) 2002-2010, 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"
-
-#ifndef CONFIG_NATIVE_WINDOWS
-
-#include "utils/common.h"
-#include "utils/eloop.h"
-#include "crypto/crypto.h"
-#include "drivers/driver.h"
-#include "common/ieee802_11_defs.h"
-#include "common/ieee802_11_common.h"
-#include "common/wpa_ctrl.h"
-#include "radius/radius.h"
-#include "radius/radius_client.h"
-#include "p2p/p2p.h"
-#include "wps/wps.h"
-#include "hostapd.h"
-#include "beacon.h"
-#include "ieee802_11_auth.h"
-#include "sta_info.h"
-#include "ieee802_1x.h"
-#include "wpa_auth.h"
-#include "wmm.h"
-#include "ap_list.h"
-#include "accounting.h"
-#include "ap_config.h"
-#include "ap_mlme.h"
-#include "p2p_hostapd.h"
-#include "ieee802_11.h"
-
-
-u8 * hostapd_eid_supp_rates(struct hostapd_data *hapd, u8 *eid)
-{
- u8 *pos = eid;
- int i, num, count;
-
- if (hapd->iface->current_rates == NULL)
- return eid;
-
- *pos++ = WLAN_EID_SUPP_RATES;
- num = hapd->iface->num_rates;
- if (num > 8) {
- /* rest of the rates are encoded in Extended supported
- * rates element */
- num = 8;
- }
-
- *pos++ = num;
- count = 0;
- for (i = 0, count = 0; i < hapd->iface->num_rates && count < num;
- i++) {
- count++;
- *pos = hapd->iface->current_rates[i].rate / 5;
- if (hapd->iface->current_rates[i].flags & HOSTAPD_RATE_BASIC)
- *pos |= 0x80;
- pos++;
- }
-
- return pos;
-}
-
-
-u8 * hostapd_eid_ext_supp_rates(struct hostapd_data *hapd, u8 *eid)
-{
- u8 *pos = eid;
- int i, num, count;
-
- if (hapd->iface->current_rates == NULL)
- return eid;
-
- num = hapd->iface->num_rates;
- if (num <= 8)
- return eid;
- num -= 8;
-
- *pos++ = WLAN_EID_EXT_SUPP_RATES;
- *pos++ = num;
- count = 0;
- for (i = 0, count = 0; i < hapd->iface->num_rates && count < num + 8;
- i++) {
- count++;
- if (count <= 8)
- continue; /* already in SuppRates IE */
- *pos = hapd->iface->current_rates[i].rate / 5;
- if (hapd->iface->current_rates[i].flags & HOSTAPD_RATE_BASIC)
- *pos |= 0x80;
- pos++;
- }
-
- return pos;
-}
-
-
-u16 hostapd_own_capab_info(struct hostapd_data *hapd, struct sta_info *sta,
- int probe)
-{
- int capab = WLAN_CAPABILITY_ESS;
- int privacy;
-
- if (hapd->iface->num_sta_no_short_preamble == 0 &&
- hapd->iconf->preamble == SHORT_PREAMBLE)
- capab |= WLAN_CAPABILITY_SHORT_PREAMBLE;
-
- privacy = hapd->conf->ssid.wep.keys_set;
-
- if (hapd->conf->ieee802_1x &&
- (hapd->conf->default_wep_key_len ||
- hapd->conf->individual_wep_key_len))
- privacy = 1;
-
- if (hapd->conf->wpa)
- privacy = 1;
-
- if (sta) {
- int policy, def_klen;
- if (probe && sta->ssid_probe) {
- policy = sta->ssid_probe->security_policy;
- def_klen = sta->ssid_probe->wep.default_len;
- } else {
- policy = sta->ssid->security_policy;
- def_klen = sta->ssid->wep.default_len;
- }
- privacy = policy != SECURITY_PLAINTEXT;
- if (policy == SECURITY_IEEE_802_1X && def_klen == 0)
- privacy = 0;
- }
-
- if (privacy)
- capab |= WLAN_CAPABILITY_PRIVACY;
-
- if (hapd->iface->current_mode &&
- hapd->iface->current_mode->mode == HOSTAPD_MODE_IEEE80211G &&
- hapd->iface->num_sta_no_short_slot_time == 0)
- capab |= WLAN_CAPABILITY_SHORT_SLOT_TIME;
-
- return capab;
-}
-
-
-#ifdef CONFIG_IEEE80211W
-static u8 * hostapd_eid_assoc_comeback_time(struct hostapd_data *hapd,
- struct sta_info *sta, u8 *eid)
-{
- u8 *pos = eid;
- u32 timeout, tu;
- struct os_time now, passed;
-
- *pos++ = WLAN_EID_TIMEOUT_INTERVAL;
- *pos++ = 5;
- *pos++ = WLAN_TIMEOUT_ASSOC_COMEBACK;
- os_get_time(&now);
- os_time_sub(&now, &sta->sa_query_start, &passed);
- tu = (passed.sec * 1000000 + passed.usec) / 1024;
- if (hapd->conf->assoc_sa_query_max_timeout > tu)
- timeout = hapd->conf->assoc_sa_query_max_timeout - tu;
- else
- timeout = 0;
- if (timeout < hapd->conf->assoc_sa_query_max_timeout)
- timeout++; /* add some extra time for local timers */
- WPA_PUT_LE32(pos, timeout);
- pos += 4;
-
- return pos;
-}
-#endif /* CONFIG_IEEE80211W */
-
-
-void ieee802_11_print_ssid(char *buf, const u8 *ssid, u8 len)
-{
- int i;
- if (len > HOSTAPD_MAX_SSID_LEN)
- len = HOSTAPD_MAX_SSID_LEN;
- for (i = 0; i < len; i++) {
- if (ssid[i] >= 32 && ssid[i] < 127)
- buf[i] = ssid[i];
- else
- buf[i] = '.';
- }
- buf[len] = '\0';
-}
-
-
-static u16 auth_shared_key(struct hostapd_data *hapd, struct sta_info *sta,
- u16 auth_transaction, const u8 *challenge,
- int iswep)
-{
- hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
- HOSTAPD_LEVEL_DEBUG,
- "authentication (shared key, transaction %d)",
- auth_transaction);
-
- if (auth_transaction == 1) {
- if (!sta->challenge) {
- /* Generate a pseudo-random challenge */
- u8 key[8];
- time_t now;
- int r;
- sta->challenge = os_zalloc(WLAN_AUTH_CHALLENGE_LEN);
- if (sta->challenge == NULL)
- return WLAN_STATUS_UNSPECIFIED_FAILURE;
-
- now = time(NULL);
- r = random();
- os_memcpy(key, &now, 4);
- os_memcpy(key + 4, &r, 4);
- rc4_skip(key, sizeof(key), 0,
- sta->challenge, WLAN_AUTH_CHALLENGE_LEN);
- }
- return 0;
- }
-
- if (auth_transaction != 3)
- return WLAN_STATUS_UNSPECIFIED_FAILURE;
-
- /* Transaction 3 */
- if (!iswep || !sta->challenge || !challenge ||
- os_memcmp(sta->challenge, challenge, WLAN_AUTH_CHALLENGE_LEN)) {
- hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
- HOSTAPD_LEVEL_INFO,
- "shared key authentication - invalid "
- "challenge-response");
- return WLAN_STATUS_CHALLENGE_FAIL;
- }
-
- hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
- HOSTAPD_LEVEL_DEBUG,
- "authentication OK (shared key)");
-#ifdef IEEE80211_REQUIRE_AUTH_ACK
- /* Station will be marked authenticated if it ACKs the
- * authentication reply. */
-#else
- sta->flags |= WLAN_STA_AUTH;
- wpa_auth_sm_event(sta->wpa_sm, WPA_AUTH);
-#endif
- os_free(sta->challenge);
- sta->challenge = NULL;
-
- return 0;
-}
-
-
-static void send_auth_reply(struct hostapd_data *hapd,
- const u8 *dst, const u8 *bssid,
- u16 auth_alg, u16 auth_transaction, u16 resp,
- const u8 *ies, size_t ies_len)
-{
- struct ieee80211_mgmt *reply;
- u8 *buf;
- size_t rlen;
-
- rlen = IEEE80211_HDRLEN + sizeof(reply->u.auth) + ies_len;
- buf = os_zalloc(rlen);
- if (buf == NULL)
- return;
-
- reply = (struct ieee80211_mgmt *) buf;
- reply->frame_control = IEEE80211_FC(WLAN_FC_TYPE_MGMT,
- WLAN_FC_STYPE_AUTH);
- os_memcpy(reply->da, dst, ETH_ALEN);
- os_memcpy(reply->sa, hapd->own_addr, ETH_ALEN);
- os_memcpy(reply->bssid, bssid, ETH_ALEN);
-
- reply->u.auth.auth_alg = host_to_le16(auth_alg);
- reply->u.auth.auth_transaction = host_to_le16(auth_transaction);
- reply->u.auth.status_code = host_to_le16(resp);
-
- if (ies && ies_len)
- os_memcpy(reply->u.auth.variable, ies, ies_len);
-
- wpa_printf(MSG_DEBUG, "authentication reply: STA=" MACSTR
- " auth_alg=%d auth_transaction=%d resp=%d (IE len=%lu)",
- MAC2STR(dst), auth_alg, auth_transaction,
- resp, (unsigned long) ies_len);
- if (hapd->drv.send_mgmt_frame(hapd, reply, rlen) < 0)
- perror("send_auth_reply: send");
-
- os_free(buf);
-}
-
-
-#ifdef CONFIG_IEEE80211R
-static void handle_auth_ft_finish(void *ctx, const u8 *dst, const u8 *bssid,
- u16 auth_transaction, u16 status,
- const u8 *ies, size_t ies_len)
-{
- struct hostapd_data *hapd = ctx;
- struct sta_info *sta;
-
- send_auth_reply(hapd, dst, bssid, WLAN_AUTH_FT, auth_transaction,
- status, ies, ies_len);
-
- if (status != WLAN_STATUS_SUCCESS)
- return;
-
- sta = ap_get_sta(hapd, dst);
- if (sta == NULL)
- return;
-
- hostapd_logger(hapd, dst, HOSTAPD_MODULE_IEEE80211,
- HOSTAPD_LEVEL_DEBUG, "authentication OK (FT)");
- sta->flags |= WLAN_STA_AUTH;
- mlme_authenticate_indication(hapd, sta);
-}
-#endif /* CONFIG_IEEE80211R */
-
-
-static void handle_auth(struct hostapd_data *hapd,
- const struct ieee80211_mgmt *mgmt, size_t len)
-{
- u16 auth_alg, auth_transaction, status_code;
- u16 resp = WLAN_STATUS_SUCCESS;
- struct sta_info *sta = NULL;
- int res;
- u16 fc;
- const u8 *challenge = NULL;
- u32 session_timeout, acct_interim_interval;
- int vlan_id = 0;
- u8 resp_ies[2 + WLAN_AUTH_CHALLENGE_LEN];
- size_t resp_ies_len = 0;
-
- if (len < IEEE80211_HDRLEN + sizeof(mgmt->u.auth)) {
- printf("handle_auth - too short payload (len=%lu)\n",
- (unsigned long) len);
- return;
- }
-
- auth_alg = le_to_host16(mgmt->u.auth.auth_alg);
- auth_transaction = le_to_host16(mgmt->u.auth.auth_transaction);
- status_code = le_to_host16(mgmt->u.auth.status_code);
- fc = le_to_host16(mgmt->frame_control);
-
- if (len >= IEEE80211_HDRLEN + sizeof(mgmt->u.auth) +
- 2 + WLAN_AUTH_CHALLENGE_LEN &&
- mgmt->u.auth.variable[0] == WLAN_EID_CHALLENGE &&
- mgmt->u.auth.variable[1] == WLAN_AUTH_CHALLENGE_LEN)
- challenge = &mgmt->u.auth.variable[2];
-
- wpa_printf(MSG_DEBUG, "authentication: STA=" MACSTR " auth_alg=%d "
- "auth_transaction=%d status_code=%d wep=%d%s",
- MAC2STR(mgmt->sa), auth_alg, auth_transaction,
- status_code, !!(fc & WLAN_FC_ISWEP),
- challenge ? " challenge" : "");
-
- if (hapd->tkip_countermeasures) {
- resp = WLAN_REASON_MICHAEL_MIC_FAILURE;
- goto fail;
- }
-
- if (!(((hapd->conf->auth_algs & WPA_AUTH_ALG_OPEN) &&
- auth_alg == WLAN_AUTH_OPEN) ||
-#ifdef CONFIG_IEEE80211R
- (hapd->conf->wpa &&
- (hapd->conf->wpa_key_mgmt &
- (WPA_KEY_MGMT_FT_IEEE8021X | WPA_KEY_MGMT_FT_PSK)) &&
- auth_alg == WLAN_AUTH_FT) ||
-#endif /* CONFIG_IEEE80211R */
- ((hapd->conf->auth_algs & WPA_AUTH_ALG_SHARED) &&
- auth_alg == WLAN_AUTH_SHARED_KEY))) {
- printf("Unsupported authentication algorithm (%d)\n",
- auth_alg);
- resp = WLAN_STATUS_NOT_SUPPORTED_AUTH_ALG;
- goto fail;
- }
-
- if (!(auth_transaction == 1 ||
- (auth_alg == WLAN_AUTH_SHARED_KEY && auth_transaction == 3))) {
- printf("Unknown authentication transaction number (%d)\n",
- auth_transaction);
- resp = WLAN_STATUS_UNKNOWN_AUTH_TRANSACTION;
- goto fail;
- }
-
- if (os_memcmp(mgmt->sa, hapd->own_addr, ETH_ALEN) == 0) {
- printf("Station " MACSTR " not allowed to authenticate.\n",
- MAC2STR(mgmt->sa));
- resp = WLAN_STATUS_UNSPECIFIED_FAILURE;
- goto fail;
- }
-
- res = hostapd_allowed_address(hapd, mgmt->sa, (u8 *) mgmt, len,
- &session_timeout,
- &acct_interim_interval, &vlan_id);
- if (res == HOSTAPD_ACL_REJECT) {
- printf("Station " MACSTR " not allowed to authenticate.\n",
- MAC2STR(mgmt->sa));
- resp = WLAN_STATUS_UNSPECIFIED_FAILURE;
- goto fail;
- }
- if (res == HOSTAPD_ACL_PENDING) {
- wpa_printf(MSG_DEBUG, "Authentication frame from " MACSTR
- " waiting for an external authentication",
- MAC2STR(mgmt->sa));
- /* Authentication code will re-send the authentication frame
- * after it has received (and cached) information from the
- * external source. */
- return;
- }
-
- sta = ap_sta_add(hapd, mgmt->sa);
- if (!sta) {
- resp = WLAN_STATUS_UNSPECIFIED_FAILURE;
- goto fail;
- }
-
- if (vlan_id > 0) {
- if (hostapd_get_vlan_id_ifname(hapd->conf->vlan,
- vlan_id) == NULL) {
- hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_RADIUS,
- HOSTAPD_LEVEL_INFO, "Invalid VLAN ID "
- "%d received from RADIUS server",
- vlan_id);
- resp = WLAN_STATUS_UNSPECIFIED_FAILURE;
- goto fail;
- }
- sta->vlan_id = vlan_id;
- hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_RADIUS,
- HOSTAPD_LEVEL_INFO, "VLAN ID %d", sta->vlan_id);
- }
-
- sta->flags &= ~WLAN_STA_PREAUTH;
- ieee802_1x_notify_pre_auth(sta->eapol_sm, 0);
-
- if (hapd->conf->acct_interim_interval == 0 && acct_interim_interval)
- sta->acct_interim_interval = acct_interim_interval;
- if (res == HOSTAPD_ACL_ACCEPT_TIMEOUT)
- ap_sta_session_timeout(hapd, sta, session_timeout);
- else
- ap_sta_no_session_timeout(hapd, sta);
-
- switch (auth_alg) {
- case WLAN_AUTH_OPEN:
- hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
- HOSTAPD_LEVEL_DEBUG,
- "authentication OK (open system)");
-#ifdef IEEE80211_REQUIRE_AUTH_ACK
- /* Station will be marked authenticated if it ACKs the
- * authentication reply. */
-#else
- sta->flags |= WLAN_STA_AUTH;
- wpa_auth_sm_event(sta->wpa_sm, WPA_AUTH);
- sta->auth_alg = WLAN_AUTH_OPEN;
- mlme_authenticate_indication(hapd, sta);
-#endif
- break;
- case WLAN_AUTH_SHARED_KEY:
- resp = auth_shared_key(hapd, sta, auth_transaction, challenge,
- fc & WLAN_FC_ISWEP);
- sta->auth_alg = WLAN_AUTH_SHARED_KEY;
- mlme_authenticate_indication(hapd, sta);
- if (sta->challenge && auth_transaction == 1) {
- resp_ies[0] = WLAN_EID_CHALLENGE;
- resp_ies[1] = WLAN_AUTH_CHALLENGE_LEN;
- os_memcpy(resp_ies + 2, sta->challenge,
- WLAN_AUTH_CHALLENGE_LEN);
- resp_ies_len = 2 + WLAN_AUTH_CHALLENGE_LEN;
- }
- break;
-#ifdef CONFIG_IEEE80211R
- case WLAN_AUTH_FT:
- sta->auth_alg = WLAN_AUTH_FT;
- if (sta->wpa_sm == NULL)
- sta->wpa_sm = wpa_auth_sta_init(hapd->wpa_auth,
- sta->addr);
- if (sta->wpa_sm == NULL) {
- wpa_printf(MSG_DEBUG, "FT: Failed to initialize WPA "
- "state machine");
- resp = WLAN_STATUS_UNSPECIFIED_FAILURE;
- goto fail;
- }
- wpa_ft_process_auth(sta->wpa_sm, mgmt->bssid,
- auth_transaction, mgmt->u.auth.variable,
- len - IEEE80211_HDRLEN -
- sizeof(mgmt->u.auth),
- handle_auth_ft_finish, hapd);
- /* handle_auth_ft_finish() callback will complete auth. */
- return;
-#endif /* CONFIG_IEEE80211R */
- }
-
- fail:
- send_auth_reply(hapd, mgmt->sa, mgmt->bssid, auth_alg,
- auth_transaction + 1, resp, resp_ies, resp_ies_len);
-}
-
-
-static int hostapd_get_aid(struct hostapd_data *hapd, struct sta_info *sta)
-{
- int i, j = 32, aid;
-
- /* get a unique AID */
- if (sta->aid > 0) {
- wpa_printf(MSG_DEBUG, " old AID %d", sta->aid);
- return 0;
- }
-
- for (i = 0; i < AID_WORDS; i++) {
- if (hapd->sta_aid[i] == (u32) -1)
- continue;
- for (j = 0; j < 32; j++) {
- if (!(hapd->sta_aid[i] & BIT(j)))
- break;
- }
- if (j < 32)
- break;
- }
- if (j == 32)
- return -1;
- aid = i * 32 + j + 1;
- if (aid > 2007)
- return -1;
-
- sta->aid = aid;
- hapd->sta_aid[i] |= BIT(j);
- wpa_printf(MSG_DEBUG, " new AID %d", sta->aid);
- return 0;
-}
-
-
-static u16 check_ssid(struct hostapd_data *hapd, struct sta_info *sta,
- const u8 *ssid_ie, size_t ssid_ie_len)
-{
- if (ssid_ie == NULL)
- return WLAN_STATUS_UNSPECIFIED_FAILURE;
-
- if (ssid_ie_len != hapd->conf->ssid.ssid_len ||
- os_memcmp(ssid_ie, hapd->conf->ssid.ssid, ssid_ie_len) != 0) {
- char ssid_txt[33];
- ieee802_11_print_ssid(ssid_txt, ssid_ie, ssid_ie_len);
- hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
- HOSTAPD_LEVEL_INFO,
- "Station tried to associate with unknown SSID "
- "'%s'", ssid_txt);
- return WLAN_STATUS_UNSPECIFIED_FAILURE;
- }
-
- return WLAN_STATUS_SUCCESS;
-}
-
-
-static u16 check_wmm(struct hostapd_data *hapd, struct sta_info *sta,
- const u8 *wmm_ie, size_t wmm_ie_len)
-{
- sta->flags &= ~WLAN_STA_WMM;
- if (wmm_ie && hapd->conf->wmm_enabled) {
- if (hostapd_eid_wmm_valid(hapd, wmm_ie, wmm_ie_len))
- hostapd_logger(hapd, sta->addr,
- HOSTAPD_MODULE_WPA,
- HOSTAPD_LEVEL_DEBUG,
- "invalid WMM element in association "
- "request");
- else
- sta->flags |= WLAN_STA_WMM;
- }
- return WLAN_STATUS_SUCCESS;
-}
-
-
-static u16 copy_supp_rates(struct hostapd_data *hapd, struct sta_info *sta,
- struct ieee802_11_elems *elems)
-{
- if (!elems->supp_rates) {
- hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
- HOSTAPD_LEVEL_DEBUG,
- "No supported rates element in AssocReq");
- return WLAN_STATUS_UNSPECIFIED_FAILURE;
- }
-
- if (elems->supp_rates_len > sizeof(sta->supported_rates)) {
- hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
- HOSTAPD_LEVEL_DEBUG,
- "Invalid supported rates element length %d",
- elems->supp_rates_len);
- return WLAN_STATUS_UNSPECIFIED_FAILURE;
- }
-
- os_memset(sta->supported_rates, 0, sizeof(sta->supported_rates));
- os_memcpy(sta->supported_rates, elems->supp_rates,
- elems->supp_rates_len);
- sta->supported_rates_len = elems->supp_rates_len;
-
- if (elems->ext_supp_rates) {
- if (elems->supp_rates_len + elems->ext_supp_rates_len >
- sizeof(sta->supported_rates)) {
- hostapd_logger(hapd, sta->addr,
- HOSTAPD_MODULE_IEEE80211,
- HOSTAPD_LEVEL_DEBUG,
- "Invalid supported rates element length"
- " %d+%d", elems->supp_rates_len,
- elems->ext_supp_rates_len);
- return WLAN_STATUS_UNSPECIFIED_FAILURE;
- }
-
- os_memcpy(sta->supported_rates + elems->supp_rates_len,
- elems->ext_supp_rates, elems->ext_supp_rates_len);
- sta->supported_rates_len += elems->ext_supp_rates_len;
- }
-
- return WLAN_STATUS_SUCCESS;
-}
-
-
-static u16 check_assoc_ies(struct hostapd_data *hapd, struct sta_info *sta,
- const u8 *ies, size_t ies_len, int reassoc)
-{
- struct ieee802_11_elems elems;
- u16 resp;
- const u8 *wpa_ie;
- size_t wpa_ie_len;
-
- if (ieee802_11_parse_elems(ies, ies_len, &elems, 1) == ParseFailed) {
- hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
- HOSTAPD_LEVEL_INFO, "Station sent an invalid "
- "association request");
- return WLAN_STATUS_UNSPECIFIED_FAILURE;
- }
-
- resp = check_ssid(hapd, sta, elems.ssid, elems.ssid_len);
- if (resp != WLAN_STATUS_SUCCESS)
- return resp;
- resp = check_wmm(hapd, sta, elems.wmm, elems.wmm_len);
- if (resp != WLAN_STATUS_SUCCESS)
- return resp;
- resp = copy_supp_rates(hapd, sta, &elems);
- if (resp != WLAN_STATUS_SUCCESS)
- return resp;
-#ifdef CONFIG_IEEE80211N
- resp = copy_sta_ht_capab(sta, elems.ht_capabilities,
- elems.ht_capabilities_len);
- if (resp != WLAN_STATUS_SUCCESS)
- return resp;
-#endif /* CONFIG_IEEE80211N */
-
- if ((hapd->conf->wpa & WPA_PROTO_RSN) && elems.rsn_ie) {
- wpa_ie = elems.rsn_ie;
- wpa_ie_len = elems.rsn_ie_len;
- } else if ((hapd->conf->wpa & WPA_PROTO_WPA) &&
- elems.wpa_ie) {
- wpa_ie = elems.wpa_ie;
- wpa_ie_len = elems.wpa_ie_len;
- } else {
- wpa_ie = NULL;
- wpa_ie_len = 0;
- }
-
-#ifdef CONFIG_WPS
- sta->flags &= ~(WLAN_STA_WPS | WLAN_STA_MAYBE_WPS);
- if (hapd->conf->wps_state && elems.wps_ie) {
- wpa_printf(MSG_DEBUG, "STA included WPS IE in (Re)Association "
- "Request - assume WPS is used");
- sta->flags |= WLAN_STA_WPS;
- wpabuf_free(sta->wps_ie);
- sta->wps_ie = ieee802_11_vendor_ie_concat(ies, ies_len,
- WPS_IE_VENDOR_TYPE);
- wpa_ie = NULL;
- wpa_ie_len = 0;
- if (sta->wps_ie && wps_validate_assoc_req(sta->wps_ie) < 0) {
- wpa_printf(MSG_DEBUG, "WPS: Invalid WPS IE in "
- "(Re)Association Request - reject");
- return WLAN_STATUS_INVALID_IE;
- }
- } else if (hapd->conf->wps_state && wpa_ie == NULL) {
- wpa_printf(MSG_DEBUG, "STA did not include WPA/RSN IE in "
- "(Re)Association Request - possible WPS use");
- sta->flags |= WLAN_STA_MAYBE_WPS;
- } else
-#endif /* CONFIG_WPS */
- if (hapd->conf->wpa && wpa_ie == NULL) {
- hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
- HOSTAPD_LEVEL_INFO,
- "No WPA/RSN IE in association request");
- return WLAN_STATUS_INVALID_IE;
- }
-
- if (hapd->conf->wpa && wpa_ie) {
- int res;
- wpa_ie -= 2;
- wpa_ie_len += 2;
- if (sta->wpa_sm == NULL)
- sta->wpa_sm = wpa_auth_sta_init(hapd->wpa_auth,
- sta->addr);
- if (sta->wpa_sm == NULL) {
- wpa_printf(MSG_WARNING, "Failed to initialize WPA "
- "state machine");
- return WLAN_STATUS_UNSPECIFIED_FAILURE;
- }
- res = wpa_validate_wpa_ie(hapd->wpa_auth, sta->wpa_sm,
- wpa_ie, wpa_ie_len,
- elems.mdie, elems.mdie_len);
- if (res == WPA_INVALID_GROUP)
- resp = WLAN_STATUS_GROUP_CIPHER_NOT_VALID;
- else if (res == WPA_INVALID_PAIRWISE)
- resp = WLAN_STATUS_PAIRWISE_CIPHER_NOT_VALID;
- else if (res == WPA_INVALID_AKMP)
- resp = WLAN_STATUS_AKMP_NOT_VALID;
- else if (res == WPA_ALLOC_FAIL)
- resp = WLAN_STATUS_UNSPECIFIED_FAILURE;
-#ifdef CONFIG_IEEE80211W
- else if (res == WPA_MGMT_FRAME_PROTECTION_VIOLATION)
- resp = WLAN_STATUS_ROBUST_MGMT_FRAME_POLICY_VIOLATION;
- else if (res == WPA_INVALID_MGMT_GROUP_CIPHER)
- resp = WLAN_STATUS_ROBUST_MGMT_FRAME_POLICY_VIOLATION;
-#endif /* CONFIG_IEEE80211W */
- else if (res == WPA_INVALID_MDIE)
- resp = WLAN_STATUS_INVALID_MDIE;
- else if (res != WPA_IE_OK)
- resp = WLAN_STATUS_INVALID_IE;
- if (resp != WLAN_STATUS_SUCCESS)
- return resp;
-#ifdef CONFIG_IEEE80211W
- if ((sta->flags & WLAN_STA_MFP) && !sta->sa_query_timed_out &&
- sta->sa_query_count > 0)
- ap_check_sa_query_timeout(hapd, sta);
- if ((sta->flags & WLAN_STA_MFP) && !sta->sa_query_timed_out &&
- (!reassoc || sta->auth_alg != WLAN_AUTH_FT)) {
- /*
- * STA has already been associated with MFP and SA
- * Query timeout has not been reached. Reject the
- * association attempt temporarily and start SA Query,
- * if one is not pending.
- */
-
- if (sta->sa_query_count == 0)
- ap_sta_start_sa_query(hapd, sta);
-
- return WLAN_STATUS_ASSOC_REJECTED_TEMPORARILY;
- }
-
- if (wpa_auth_uses_mfp(sta->wpa_sm))
- sta->flags |= WLAN_STA_MFP;
- else
- sta->flags &= ~WLAN_STA_MFP;
-#endif /* CONFIG_IEEE80211W */
-
-#ifdef CONFIG_IEEE80211R
- if (sta->auth_alg == WLAN_AUTH_FT) {
- if (!reassoc) {
- wpa_printf(MSG_DEBUG, "FT: " MACSTR " tried "
- "to use association (not "
- "re-association) with FT auth_alg",
- MAC2STR(sta->addr));
- return WLAN_STATUS_UNSPECIFIED_FAILURE;
- }
-
- resp = wpa_ft_validate_reassoc(sta->wpa_sm, ies,
- ies_len);
- if (resp != WLAN_STATUS_SUCCESS)
- return resp;
- }
-#endif /* CONFIG_IEEE80211R */
-
-#ifdef CONFIG_IEEE80211N
- if ((sta->flags & WLAN_STA_HT) &&
- wpa_auth_get_pairwise(sta->wpa_sm) == WPA_CIPHER_TKIP) {
- hostapd_logger(hapd, sta->addr,
- HOSTAPD_MODULE_IEEE80211,
- HOSTAPD_LEVEL_INFO,
- "Station tried to use TKIP with HT "
- "association");
- return WLAN_STATUS_CIPHER_REJECTED_PER_POLICY;
- }
-#endif /* CONFIG_IEEE80211N */
- } else
- wpa_auth_sta_no_wpa(sta->wpa_sm);
-
-#ifdef CONFIG_P2P
- if (elems.p2p) {
- wpabuf_free(sta->p2p_ie);
- sta->p2p_ie = ieee802_11_vendor_ie_concat(ies, ies_len,
- P2P_IE_VENDOR_TYPE);
-
- if (p2p_group_notif_assoc(hapd->p2p_group, sta->addr,
- ies, ies_len) < 0) {
- wpa_printf(MSG_DEBUG, "P2P: Invalid P2P IE in "
- "(Re)Association Request frame from "
- MACSTR, MAC2STR(sta->addr));
- return WLAN_STATUS_UNSPECIFIED_FAILURE;
- }
- } else {
- wpabuf_free(sta->p2p_ie);
- sta->p2p_ie = NULL;
- }
-#endif /* CONFIG_P2P */
-
- return WLAN_STATUS_SUCCESS;
-}
-
-
-static void send_deauth(struct hostapd_data *hapd, const u8 *addr,
- u16 reason_code)
-{
- int send_len;
- struct ieee80211_mgmt reply;
-
- os_memset(&reply, 0, sizeof(reply));
- reply.frame_control =
- IEEE80211_FC(WLAN_FC_TYPE_MGMT, WLAN_FC_STYPE_DEAUTH);
- os_memcpy(reply.da, addr, ETH_ALEN);
- os_memcpy(reply.sa, hapd->own_addr, ETH_ALEN);
- os_memcpy(reply.bssid, hapd->own_addr, ETH_ALEN);
-
- send_len = IEEE80211_HDRLEN + sizeof(reply.u.deauth);
- reply.u.deauth.reason_code = host_to_le16(reason_code);
-
- if (hapd->drv.send_mgmt_frame(hapd, &reply, send_len) < 0)
- wpa_printf(MSG_INFO, "Failed to send deauth: %s",
- strerror(errno));
-}
-
-
-static void send_assoc_resp(struct hostapd_data *hapd, struct sta_info *sta,
- u16 status_code, int reassoc, const u8 *ies,
- size_t ies_len)
-{
- int send_len;
- u8 buf[sizeof(struct ieee80211_mgmt) + 1024];
- struct ieee80211_mgmt *reply;
- u8 *p;
-
- os_memset(buf, 0, sizeof(buf));
- reply = (struct ieee80211_mgmt *) buf;
- reply->frame_control =
- IEEE80211_FC(WLAN_FC_TYPE_MGMT,
- (reassoc ? WLAN_FC_STYPE_REASSOC_RESP :
- WLAN_FC_STYPE_ASSOC_RESP));
- os_memcpy(reply->da, sta->addr, ETH_ALEN);
- os_memcpy(reply->sa, hapd->own_addr, ETH_ALEN);
- os_memcpy(reply->bssid, hapd->own_addr, ETH_ALEN);
-
- send_len = IEEE80211_HDRLEN;
- send_len += sizeof(reply->u.assoc_resp);
- reply->u.assoc_resp.capab_info =
- host_to_le16(hostapd_own_capab_info(hapd, sta, 0));
- reply->u.assoc_resp.status_code = host_to_le16(status_code);
- reply->u.assoc_resp.aid = host_to_le16((sta ? sta->aid : 0)
- | BIT(14) | BIT(15));
- /* Supported rates */
- p = hostapd_eid_supp_rates(hapd, reply->u.assoc_resp.variable);
- /* Extended supported rates */
- p = hostapd_eid_ext_supp_rates(hapd, p);
-
-#ifdef CONFIG_IEEE80211R
- if (status_code == WLAN_STATUS_SUCCESS) {
- /* IEEE 802.11r: Mobility Domain Information, Fast BSS
- * Transition Information, RSN, [RIC Response] */
- p = wpa_sm_write_assoc_resp_ies(sta->wpa_sm, p,
- buf + sizeof(buf) - p,
- sta->auth_alg, ies, ies_len);
- }
-#endif /* CONFIG_IEEE80211R */
-
-#ifdef CONFIG_IEEE80211W
- if (status_code == WLAN_STATUS_ASSOC_REJECTED_TEMPORARILY)
- p = hostapd_eid_assoc_comeback_time(hapd, sta, p);
-#endif /* CONFIG_IEEE80211W */
-
-#ifdef CONFIG_IEEE80211N
- p = hostapd_eid_ht_capabilities(hapd, p);
- p = hostapd_eid_ht_operation(hapd, p);
-#endif /* CONFIG_IEEE80211N */
-
- if (sta->flags & WLAN_STA_WMM)
- p = hostapd_eid_wmm(hapd, p);
-
-#ifdef CONFIG_WPS
- if (sta->flags & WLAN_STA_WPS) {
- struct wpabuf *wps = wps_build_assoc_resp_ie();
- if (wps) {
- os_memcpy(p, wpabuf_head(wps), wpabuf_len(wps));
- p += wpabuf_len(wps);
- wpabuf_free(wps);
- }
- }
-#endif /* CONFIG_WPS */
-
-#ifdef CONFIG_P2P
- if (sta->p2p_ie) {
- struct wpabuf *p2p_resp_ie;
- enum p2p_status_code status;
- switch (status_code) {
- case WLAN_STATUS_SUCCESS:
- status = P2P_SC_SUCCESS;
- break;
- case WLAN_STATUS_AP_UNABLE_TO_HANDLE_NEW_STA:
- status = P2P_SC_FAIL_LIMIT_REACHED;
- break;
- default:
- status = P2P_SC_FAIL_INVALID_PARAMS;
- break;
- }
- p2p_resp_ie = p2p_group_assoc_resp_ie(hapd->p2p_group, status);
- if (p2p_resp_ie) {
- os_memcpy(p, wpabuf_head(p2p_resp_ie),
- wpabuf_len(p2p_resp_ie));
- p += wpabuf_len(p2p_resp_ie);
- wpabuf_free(p2p_resp_ie);
- }
- }
-#endif /* CONFIG_P2P */
-
-#ifdef CONFIG_P2P_MANAGER
- if (hapd->conf->p2p & P2P_MANAGE)
- p = hostapd_eid_p2p_manage(hapd, p);
-#endif /* CONFIG_P2P_MANAGER */
-
- send_len += p - reply->u.assoc_resp.variable;
-
- if (hapd->drv.send_mgmt_frame(hapd, reply, send_len) < 0)
- wpa_printf(MSG_INFO, "Failed to send assoc resp: %s",
- strerror(errno));
-}
-
-
-static void handle_assoc(struct hostapd_data *hapd,
- const struct ieee80211_mgmt *mgmt, size_t len,
- int reassoc)
-{
- u16 capab_info, listen_interval;
- u16 resp = WLAN_STATUS_SUCCESS;
- const u8 *pos;
- int left, i;
- struct sta_info *sta;
-
- if (len < IEEE80211_HDRLEN + (reassoc ? sizeof(mgmt->u.reassoc_req) :
- sizeof(mgmt->u.assoc_req))) {
- printf("handle_assoc(reassoc=%d) - too short payload (len=%lu)"
- "\n", reassoc, (unsigned long) len);
- return;
- }
-
- if (reassoc) {
- capab_info = le_to_host16(mgmt->u.reassoc_req.capab_info);
- listen_interval = le_to_host16(
- mgmt->u.reassoc_req.listen_interval);
- wpa_printf(MSG_DEBUG, "reassociation request: STA=" MACSTR
- " capab_info=0x%02x listen_interval=%d current_ap="
- MACSTR,
- MAC2STR(mgmt->sa), capab_info, listen_interval,
- MAC2STR(mgmt->u.reassoc_req.current_ap));
- left = len - (IEEE80211_HDRLEN + sizeof(mgmt->u.reassoc_req));
- pos = mgmt->u.reassoc_req.variable;
- } else {
- capab_info = le_to_host16(mgmt->u.assoc_req.capab_info);
- listen_interval = le_to_host16(
- mgmt->u.assoc_req.listen_interval);
- wpa_printf(MSG_DEBUG, "association request: STA=" MACSTR
- " capab_info=0x%02x listen_interval=%d",
- MAC2STR(mgmt->sa), capab_info, listen_interval);
- left = len - (IEEE80211_HDRLEN + sizeof(mgmt->u.assoc_req));
- pos = mgmt->u.assoc_req.variable;
- }
-
- sta = ap_get_sta(hapd, mgmt->sa);
-#ifdef CONFIG_IEEE80211R
- if (sta && sta->auth_alg == WLAN_AUTH_FT &&
- (sta->flags & WLAN_STA_AUTH) == 0) {
- wpa_printf(MSG_DEBUG, "FT: Allow STA " MACSTR " to associate "
- "prior to authentication since it is using "
- "over-the-DS FT", MAC2STR(mgmt->sa));
- } else
-#endif /* CONFIG_IEEE80211R */
- if (sta == NULL || (sta->flags & WLAN_STA_AUTH) == 0) {
- hostapd_logger(hapd, mgmt->sa, HOSTAPD_MODULE_IEEE80211,
- HOSTAPD_LEVEL_INFO, "Station tried to "
- "associate before authentication "
- "(aid=%d flags=0x%x)",
- sta ? sta->aid : -1,
- sta ? sta->flags : 0);
- send_deauth(hapd, mgmt->sa,
- WLAN_REASON_CLASS2_FRAME_FROM_NONAUTH_STA);
- return;
- }
-
- if (hapd->tkip_countermeasures) {
- resp = WLAN_REASON_MICHAEL_MIC_FAILURE;
- goto fail;
- }
-
- if (listen_interval > hapd->conf->max_listen_interval) {
- hostapd_logger(hapd, mgmt->sa, HOSTAPD_MODULE_IEEE80211,
- HOSTAPD_LEVEL_DEBUG,
- "Too large Listen Interval (%d)",
- listen_interval);
- resp = WLAN_STATUS_ASSOC_DENIED_LISTEN_INT_TOO_LARGE;
- goto fail;
- }
-
- /* followed by SSID and Supported rates; and HT capabilities if 802.11n
- * is used */
- resp = check_assoc_ies(hapd, sta, pos, left, reassoc);
- if (resp != WLAN_STATUS_SUCCESS)
- goto fail;
-
- if (hostapd_get_aid(hapd, sta) < 0) {
- hostapd_logger(hapd, mgmt->sa, HOSTAPD_MODULE_IEEE80211,
- HOSTAPD_LEVEL_INFO, "No room for more AIDs");
- resp = WLAN_STATUS_AP_UNABLE_TO_HANDLE_NEW_STA;
- goto fail;
- }
-
- sta->capability = capab_info;
- sta->listen_interval = listen_interval;
-
- if (hapd->iface->current_mode->mode == HOSTAPD_MODE_IEEE80211G)
- sta->flags |= WLAN_STA_NONERP;
- for (i = 0; i < sta->supported_rates_len; i++) {
- if ((sta->supported_rates[i] & 0x7f) > 22) {
- sta->flags &= ~WLAN_STA_NONERP;
- break;
- }
- }
- if (sta->flags & WLAN_STA_NONERP && !sta->nonerp_set) {
- sta->nonerp_set = 1;
- hapd->iface->num_sta_non_erp++;
- if (hapd->iface->num_sta_non_erp == 1)
- ieee802_11_set_beacons(hapd->iface);
- }
-
- if (!(sta->capability & WLAN_CAPABILITY_SHORT_SLOT_TIME) &&
- !sta->no_short_slot_time_set) {
- sta->no_short_slot_time_set = 1;
- hapd->iface->num_sta_no_short_slot_time++;
- if (hapd->iface->current_mode->mode ==
- HOSTAPD_MODE_IEEE80211G &&
- hapd->iface->num_sta_no_short_slot_time == 1)
- ieee802_11_set_beacons(hapd->iface);
- }
-
- if (sta->capability & WLAN_CAPABILITY_SHORT_PREAMBLE)
- sta->flags |= WLAN_STA_SHORT_PREAMBLE;
- else
- sta->flags &= ~WLAN_STA_SHORT_PREAMBLE;
-
- if (!(sta->capability & WLAN_CAPABILITY_SHORT_PREAMBLE) &&
- !sta->no_short_preamble_set) {
- sta->no_short_preamble_set = 1;
- hapd->iface->num_sta_no_short_preamble++;
- if (hapd->iface->current_mode->mode == HOSTAPD_MODE_IEEE80211G
- && hapd->iface->num_sta_no_short_preamble == 1)
- ieee802_11_set_beacons(hapd->iface);
- }
-
-#ifdef CONFIG_IEEE80211N
- update_ht_state(hapd, sta);
-#endif /* CONFIG_IEEE80211N */
-
- hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
- HOSTAPD_LEVEL_DEBUG,
- "association OK (aid %d)", sta->aid);
- /* Station will be marked associated, after it acknowledges AssocResp
- */
-
-#ifdef CONFIG_IEEE80211W
- if ((sta->flags & WLAN_STA_MFP) && sta->sa_query_timed_out) {
- wpa_printf(MSG_DEBUG, "Allowing %sassociation after timed out "
- "SA Query procedure", reassoc ? "re" : "");
- /* TODO: Send a protected Disassociate frame to the STA using
- * the old key and Reason Code "Previous Authentication no
- * longer valid". Make sure this is only sent protected since
- * unprotected frame would be received by the STA that is now
- * trying to associate.
- */
- }
-#endif /* CONFIG_IEEE80211W */
-
- if (reassoc) {
- os_memcpy(sta->previous_ap, mgmt->u.reassoc_req.current_ap,
- ETH_ALEN);
- }
-
- if (sta->last_assoc_req)
- os_free(sta->last_assoc_req);
- sta->last_assoc_req = os_malloc(len);
- if (sta->last_assoc_req)
- os_memcpy(sta->last_assoc_req, mgmt, len);
-
- /* Make sure that the previously registered inactivity timer will not
- * remove the STA immediately. */
- sta->timeout_next = STA_NULLFUNC;
-
- fail:
- send_assoc_resp(hapd, sta, resp, reassoc, pos, left);
-}
-
-
-static void handle_disassoc(struct hostapd_data *hapd,
- const struct ieee80211_mgmt *mgmt, size_t len)
-{
- struct sta_info *sta;
-
- if (len < IEEE80211_HDRLEN + sizeof(mgmt->u.disassoc)) {
- printf("handle_disassoc - too short payload (len=%lu)\n",
- (unsigned long) len);
- return;
- }
-
- wpa_printf(MSG_DEBUG, "disassocation: STA=" MACSTR " reason_code=%d",
- MAC2STR(mgmt->sa),
- le_to_host16(mgmt->u.disassoc.reason_code));
-
- sta = ap_get_sta(hapd, mgmt->sa);
- if (sta == NULL) {
- printf("Station " MACSTR " trying to disassociate, but it "
- "is not associated.\n", MAC2STR(mgmt->sa));
- return;
- }
-
- sta->flags &= ~WLAN_STA_ASSOC;
- wpa_msg(hapd->msg_ctx, MSG_INFO, AP_STA_DISCONNECTED MACSTR,
- MAC2STR(sta->addr));
- wpa_auth_sm_event(sta->wpa_sm, WPA_DISASSOC);
- hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
- HOSTAPD_LEVEL_INFO, "disassociated");
- sta->acct_terminate_cause = RADIUS_ACCT_TERMINATE_CAUSE_USER_REQUEST;
- ieee802_1x_notify_port_enabled(sta->eapol_sm, 0);
- /* Stop Accounting and IEEE 802.1X sessions, but leave the STA
- * authenticated. */
- accounting_sta_stop(hapd, sta);
- ieee802_1x_free_station(sta);
- hapd->drv.sta_remove(hapd, sta->addr);
-
- if (sta->timeout_next == STA_NULLFUNC ||
- sta->timeout_next == STA_DISASSOC) {
- sta->timeout_next = STA_DEAUTH;
- eloop_cancel_timeout(ap_handle_timer, hapd, sta);
- eloop_register_timeout(AP_DEAUTH_DELAY, 0, ap_handle_timer,
- hapd, sta);
- }
-
- mlme_disassociate_indication(
- hapd, sta, le_to_host16(mgmt->u.disassoc.reason_code));
-}
-
-
-static void handle_deauth(struct hostapd_data *hapd,
- const struct ieee80211_mgmt *mgmt, size_t len)
-{
- struct sta_info *sta;
-
- if (len < IEEE80211_HDRLEN + sizeof(mgmt->u.deauth)) {
- printf("handle_deauth - too short payload (len=%lu)\n",
- (unsigned long) len);
- return;
- }
-
- wpa_printf(MSG_DEBUG, "deauthentication: STA=" MACSTR
- " reason_code=%d",
- MAC2STR(mgmt->sa),
- le_to_host16(mgmt->u.deauth.reason_code));
-
- sta = ap_get_sta(hapd, mgmt->sa);
- if (sta == NULL) {
- printf("Station " MACSTR " trying to deauthenticate, but it "
- "is not authenticated.\n", MAC2STR(mgmt->sa));
- return;
- }
-
- sta->flags &= ~(WLAN_STA_AUTH | WLAN_STA_ASSOC);
- wpa_msg(hapd->msg_ctx, MSG_INFO, AP_STA_DISCONNECTED MACSTR,
- MAC2STR(sta->addr));
- wpa_auth_sm_event(sta->wpa_sm, WPA_DEAUTH);
- hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
- HOSTAPD_LEVEL_DEBUG, "deauthenticated");
- mlme_deauthenticate_indication(
- hapd, sta, le_to_host16(mgmt->u.deauth.reason_code));
- sta->acct_terminate_cause = RADIUS_ACCT_TERMINATE_CAUSE_USER_REQUEST;
- ieee802_1x_notify_port_enabled(sta->eapol_sm, 0);
- ap_free_sta(hapd, sta);
-}
-
-
-static void handle_beacon(struct hostapd_data *hapd,
- const struct ieee80211_mgmt *mgmt, size_t len,
- struct hostapd_frame_info *fi)
-{
- struct ieee802_11_elems elems;
-
- if (len < IEEE80211_HDRLEN + sizeof(mgmt->u.beacon)) {
- printf("handle_beacon - too short payload (len=%lu)\n",
- (unsigned long) len);
- return;
- }
-
- (void) ieee802_11_parse_elems(mgmt->u.beacon.variable,
- len - (IEEE80211_HDRLEN +
- sizeof(mgmt->u.beacon)), &elems,
- 0);
-
- ap_list_process_beacon(hapd->iface, mgmt, &elems, fi);
-}
-
-
-#ifdef CONFIG_IEEE80211W
-
-/* MLME-SAQuery.request */
-void ieee802_11_send_sa_query_req(struct hostapd_data *hapd,
- const u8 *addr, const u8 *trans_id)
-{
- struct ieee80211_mgmt mgmt;
- u8 *end;
-
- wpa_printf(MSG_DEBUG, "IEEE 802.11: Sending SA Query Request to "
- MACSTR, MAC2STR(addr));
- wpa_hexdump(MSG_DEBUG, "IEEE 802.11: SA Query Transaction ID",
- trans_id, WLAN_SA_QUERY_TR_ID_LEN);
-
- os_memset(&mgmt, 0, sizeof(mgmt));
- mgmt.frame_control = IEEE80211_FC(WLAN_FC_TYPE_MGMT,
- WLAN_FC_STYPE_ACTION);
- os_memcpy(mgmt.da, addr, ETH_ALEN);
- os_memcpy(mgmt.sa, hapd->own_addr, ETH_ALEN);
- os_memcpy(mgmt.bssid, hapd->own_addr, ETH_ALEN);
- mgmt.u.action.category = WLAN_ACTION_SA_QUERY;
- mgmt.u.action.u.sa_query_req.action = WLAN_SA_QUERY_REQUEST;
- os_memcpy(mgmt.u.action.u.sa_query_req.trans_id, trans_id,
- WLAN_SA_QUERY_TR_ID_LEN);
- end = mgmt.u.action.u.sa_query_req.trans_id + WLAN_SA_QUERY_TR_ID_LEN;
- if (hapd->drv.send_mgmt_frame(hapd, &mgmt, end - (u8 *) &mgmt) < 0)
- perror("ieee802_11_send_sa_query_req: send");
-}
-
-
-static void hostapd_sa_query_request(struct hostapd_data *hapd,
- const struct ieee80211_mgmt *mgmt)
-{
- struct sta_info *sta;
- struct ieee80211_mgmt resp;
- u8 *end;
-
- wpa_printf(MSG_DEBUG, "IEEE 802.11: Received SA Query Request from "
- MACSTR, MAC2STR(mgmt->sa));
- wpa_hexdump(MSG_DEBUG, "IEEE 802.11: SA Query Transaction ID",
- mgmt->u.action.u.sa_query_resp.trans_id,
- WLAN_SA_QUERY_TR_ID_LEN);
-
- sta = ap_get_sta(hapd, mgmt->sa);
- if (sta == NULL || !(sta->flags & WLAN_STA_ASSOC)) {
- wpa_printf(MSG_DEBUG, "IEEE 802.11: Ignore SA Query Request "
- "from unassociated STA " MACSTR, MAC2STR(mgmt->sa));
- return;
- }
-
- wpa_printf(MSG_DEBUG, "IEEE 802.11: Sending SA Query Response to "
- MACSTR, MAC2STR(mgmt->sa));
-
- os_memset(&resp, 0, sizeof(resp));
- resp.frame_control = IEEE80211_FC(WLAN_FC_TYPE_MGMT,
- WLAN_FC_STYPE_ACTION);
- os_memcpy(resp.da, mgmt->sa, ETH_ALEN);
- os_memcpy(resp.sa, hapd->own_addr, ETH_ALEN);
- os_memcpy(resp.bssid, hapd->own_addr, ETH_ALEN);
- resp.u.action.category = WLAN_ACTION_SA_QUERY;
- resp.u.action.u.sa_query_req.action = WLAN_SA_QUERY_RESPONSE;
- os_memcpy(resp.u.action.u.sa_query_req.trans_id,
- mgmt->u.action.u.sa_query_req.trans_id,
- WLAN_SA_QUERY_TR_ID_LEN);
- end = resp.u.action.u.sa_query_req.trans_id + WLAN_SA_QUERY_TR_ID_LEN;
- if (hapd->drv.send_mgmt_frame(hapd, &resp, end - (u8 *) &resp) < 0)
- perror("hostapd_sa_query_request: send");
-}
-
-
-static void hostapd_sa_query_action(struct hostapd_data *hapd,
- const struct ieee80211_mgmt *mgmt,
- size_t len)
-{
- struct sta_info *sta;
- const u8 *end;
- int i;
-
- end = mgmt->u.action.u.sa_query_resp.trans_id +
- WLAN_SA_QUERY_TR_ID_LEN;
- if (((u8 *) mgmt) + len < end) {
- wpa_printf(MSG_DEBUG, "IEEE 802.11: Too short SA Query Action "
- "frame (len=%lu)", (unsigned long) len);
- return;
- }
-
- if (mgmt->u.action.u.sa_query_resp.action == WLAN_SA_QUERY_REQUEST) {
- hostapd_sa_query_request(hapd, mgmt);
- return;
- }
-
- if (mgmt->u.action.u.sa_query_resp.action != WLAN_SA_QUERY_RESPONSE) {
- wpa_printf(MSG_DEBUG, "IEEE 802.11: Unexpected SA Query "
- "Action %d", mgmt->u.action.u.sa_query_resp.action);
- return;
- }
-
- wpa_printf(MSG_DEBUG, "IEEE 802.11: Received SA Query Response from "
- MACSTR, MAC2STR(mgmt->sa));
- wpa_hexdump(MSG_DEBUG, "IEEE 802.11: SA Query Transaction ID",
- mgmt->u.action.u.sa_query_resp.trans_id,
- WLAN_SA_QUERY_TR_ID_LEN);
-
- /* MLME-SAQuery.confirm */
-
- sta = ap_get_sta(hapd, mgmt->sa);
- if (sta == NULL || sta->sa_query_trans_id == NULL) {
- wpa_printf(MSG_DEBUG, "IEEE 802.11: No matching STA with "
- "pending SA Query request found");
- return;
- }
-
- for (i = 0; i < sta->sa_query_count; i++) {
- if (os_memcmp(sta->sa_query_trans_id +
- i * WLAN_SA_QUERY_TR_ID_LEN,
- mgmt->u.action.u.sa_query_resp.trans_id,
- WLAN_SA_QUERY_TR_ID_LEN) == 0)
- break;
- }
-
- if (i >= sta->sa_query_count) {
- wpa_printf(MSG_DEBUG, "IEEE 802.11: No matching SA Query "
- "transaction identifier found");
- return;
- }
-
- hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
- HOSTAPD_LEVEL_DEBUG,
- "Reply to pending SA Query received");
- ap_sta_stop_sa_query(hapd, sta);
-}
-
-
-static int robust_action_frame(u8 category)
-{
- return category != WLAN_ACTION_PUBLIC &&
- category != WLAN_ACTION_HT;
-}
-#endif /* CONFIG_IEEE80211W */
-
-
-static void handle_action(struct hostapd_data *hapd,
- const struct ieee80211_mgmt *mgmt, size_t len)
-{
- struct sta_info *sta;
-
- if (len < IEEE80211_HDRLEN + 1) {
- hostapd_logger(hapd, mgmt->sa, HOSTAPD_MODULE_IEEE80211,
- HOSTAPD_LEVEL_DEBUG,
- "handle_action - too short payload (len=%lu)",
- (unsigned long) len);
- return;
- }
-
- sta = ap_get_sta(hapd, mgmt->sa);
-#ifdef CONFIG_IEEE80211W
- if (sta && (sta->flags & WLAN_STA_MFP) &&
- !(mgmt->frame_control & host_to_le16(WLAN_FC_ISWEP) &&
- robust_action_frame(mgmt->u.action.category))) {
- hostapd_logger(hapd, mgmt->sa, HOSTAPD_MODULE_IEEE80211,
- HOSTAPD_LEVEL_DEBUG,
- "Dropped unprotected Robust Action frame from "
- "an MFP STA");
- return;
- }
-#endif /* CONFIG_IEEE80211W */
-
- switch (mgmt->u.action.category) {
-#ifdef CONFIG_IEEE80211R
- case WLAN_ACTION_FT:
- {
- if (sta == NULL || !(sta->flags & WLAN_STA_ASSOC)) {
- wpa_printf(MSG_DEBUG, "IEEE 802.11: Ignored FT Action "
- "frame from unassociated STA " MACSTR,
- MAC2STR(mgmt->sa));
- return;
- }
-
- if (wpa_ft_action_rx(sta->wpa_sm, (u8 *) &mgmt->u.action,
- len - IEEE80211_HDRLEN))
- break;
-
- return;
- }
-#endif /* CONFIG_IEEE80211R */
- case WLAN_ACTION_WMM:
- hostapd_wmm_action(hapd, mgmt, len);
- return;
-#ifdef CONFIG_IEEE80211W
- case WLAN_ACTION_SA_QUERY:
- hostapd_sa_query_action(hapd, mgmt, len);
- return;
-#endif /* CONFIG_IEEE80211W */
- case WLAN_ACTION_PUBLIC:
- if (hapd->public_action_cb) {
- hapd->public_action_cb(hapd->public_action_cb_ctx,
- (u8 *) mgmt, len,
- hapd->iface->freq);
- return;
- }
- break;
- case WLAN_ACTION_VENDOR_SPECIFIC:
- if (hapd->vendor_action_cb) {
- if (hapd->vendor_action_cb(hapd->vendor_action_cb_ctx,
- (u8 *) mgmt, len,
- hapd->iface->freq) == 0)
- return;
- }
- break;
- }
-
- hostapd_logger(hapd, mgmt->sa, HOSTAPD_MODULE_IEEE80211,
- HOSTAPD_LEVEL_DEBUG,
- "handle_action - unknown action category %d or invalid "
- "frame",
- mgmt->u.action.category);
- if (!(mgmt->da[0] & 0x01) && !(mgmt->u.action.category & 0x80) &&
- !(mgmt->sa[0] & 0x01)) {
- struct ieee80211_mgmt *resp;
-
- /*
- * IEEE 802.11-REVma/D9.0 - 7.3.1.11
- * Return the Action frame to the source without change
- * except that MSB of the Category set to 1.
- */
- wpa_printf(MSG_DEBUG, "IEEE 802.11: Return unknown Action "
- "frame back to sender");
- resp = os_malloc(len);
- if (resp == NULL)
- return;
- os_memcpy(resp, mgmt, len);
- os_memcpy(resp->da, resp->sa, ETH_ALEN);
- os_memcpy(resp->sa, hapd->own_addr, ETH_ALEN);
- os_memcpy(resp->bssid, hapd->own_addr, ETH_ALEN);
- resp->u.action.category |= 0x80;
-
- hapd->drv.send_mgmt_frame(hapd, resp, len);
- os_free(resp);
- }
-}
-
-
-/**
- * ieee802_11_mgmt - process incoming IEEE 802.11 management frames
- * @hapd: hostapd BSS data structure (the BSS to which the management frame was
- * sent to)
- * @buf: management frame data (starting from IEEE 802.11 header)
- * @len: length of frame data in octets
- * @fi: meta data about received frame (signal level, etc.)
- *
- * Process all incoming IEEE 802.11 management frames. This will be called for
- * each frame received from the kernel driver through wlan#ap interface. In
- * addition, it can be called to re-inserted pending frames (e.g., when using
- * external RADIUS server as an MAC ACL).
- */
-void ieee802_11_mgmt(struct hostapd_data *hapd, const u8 *buf, size_t len,
- struct hostapd_frame_info *fi)
-{
- struct ieee80211_mgmt *mgmt;
- int broadcast;
- u16 fc, stype;
-
- mgmt = (struct ieee80211_mgmt *) buf;
- fc = le_to_host16(mgmt->frame_control);
- stype = WLAN_FC_GET_STYPE(fc);
-
- if (stype == WLAN_FC_STYPE_BEACON) {
- handle_beacon(hapd, mgmt, len, fi);
- return;
- }
-
- broadcast = mgmt->bssid[0] == 0xff && mgmt->bssid[1] == 0xff &&
- mgmt->bssid[2] == 0xff && mgmt->bssid[3] == 0xff &&
- mgmt->bssid[4] == 0xff && mgmt->bssid[5] == 0xff;
-
- if (!broadcast &&
- os_memcmp(mgmt->bssid, hapd->own_addr, ETH_ALEN) != 0) {
- printf("MGMT: BSSID=" MACSTR " not our address\n",
- MAC2STR(mgmt->bssid));
- return;
- }
-
-
- if (stype == WLAN_FC_STYPE_PROBE_REQ) {
- handle_probe_req(hapd, mgmt, len);
- return;
- }
-
- if (os_memcmp(mgmt->da, hapd->own_addr, ETH_ALEN) != 0) {
- hostapd_logger(hapd, mgmt->sa, HOSTAPD_MODULE_IEEE80211,
- HOSTAPD_LEVEL_DEBUG,
- "MGMT: DA=" MACSTR " not our address",
- MAC2STR(mgmt->da));
- return;
- }
-
- switch (stype) {
- case WLAN_FC_STYPE_AUTH:
- wpa_printf(MSG_DEBUG, "mgmt::auth");
- handle_auth(hapd, mgmt, len);
- break;
- case WLAN_FC_STYPE_ASSOC_REQ:
- wpa_printf(MSG_DEBUG, "mgmt::assoc_req");
- handle_assoc(hapd, mgmt, len, 0);
- break;
- case WLAN_FC_STYPE_REASSOC_REQ:
- wpa_printf(MSG_DEBUG, "mgmt::reassoc_req");
- handle_assoc(hapd, mgmt, len, 1);
- break;
- case WLAN_FC_STYPE_DISASSOC:
- wpa_printf(MSG_DEBUG, "mgmt::disassoc");
- handle_disassoc(hapd, mgmt, len);
- break;
- case WLAN_FC_STYPE_DEAUTH:
- wpa_printf(MSG_DEBUG, "mgmt::deauth");
- handle_deauth(hapd, mgmt, len);
- break;
- case WLAN_FC_STYPE_ACTION:
- wpa_printf(MSG_DEBUG, "mgmt::action");
- handle_action(hapd, mgmt, len);
- break;
- default:
- hostapd_logger(hapd, mgmt->sa, HOSTAPD_MODULE_IEEE80211,
- HOSTAPD_LEVEL_DEBUG,
- "unknown mgmt frame subtype %d", stype);
- break;
- }
-}
-
-
-static void handle_auth_cb(struct hostapd_data *hapd,
- const struct ieee80211_mgmt *mgmt,
- size_t len, int ok)
-{
- u16 auth_alg, auth_transaction, status_code;
- struct sta_info *sta;
-
- if (!ok) {
- hostapd_logger(hapd, mgmt->da, HOSTAPD_MODULE_IEEE80211,
- HOSTAPD_LEVEL_NOTICE,
- "did not acknowledge authentication response");
- return;
- }
-
- if (len < IEEE80211_HDRLEN + sizeof(mgmt->u.auth)) {
- printf("handle_auth_cb - too short payload (len=%lu)\n",
- (unsigned long) len);
- return;
- }
-
- auth_alg = le_to_host16(mgmt->u.auth.auth_alg);
- auth_transaction = le_to_host16(mgmt->u.auth.auth_transaction);
- status_code = le_to_host16(mgmt->u.auth.status_code);
-
- sta = ap_get_sta(hapd, mgmt->da);
- if (!sta) {
- printf("handle_auth_cb: STA " MACSTR " not found\n",
- MAC2STR(mgmt->da));
- return;
- }
-
- if (status_code == WLAN_STATUS_SUCCESS &&
- ((auth_alg == WLAN_AUTH_OPEN && auth_transaction == 2) ||
- (auth_alg == WLAN_AUTH_SHARED_KEY && auth_transaction == 4))) {
- hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
- HOSTAPD_LEVEL_INFO, "authenticated");
- sta->flags |= WLAN_STA_AUTH;
- }
-}
-
-
-static void handle_assoc_cb(struct hostapd_data *hapd,
- const struct ieee80211_mgmt *mgmt,
- size_t len, int reassoc, int ok)
-{
- u16 status;
- struct sta_info *sta;
- int new_assoc = 1;
- struct ieee80211_ht_capabilities ht_cap;
-
- if (!ok) {
- hostapd_logger(hapd, mgmt->da, HOSTAPD_MODULE_IEEE80211,
- HOSTAPD_LEVEL_DEBUG,
- "did not acknowledge association response");
- return;
- }
-
- if (len < IEEE80211_HDRLEN + (reassoc ? sizeof(mgmt->u.reassoc_resp) :
- sizeof(mgmt->u.assoc_resp))) {
- printf("handle_assoc_cb(reassoc=%d) - too short payload "
- "(len=%lu)\n", reassoc, (unsigned long) len);
- return;
- }
-
- if (reassoc)
- status = le_to_host16(mgmt->u.reassoc_resp.status_code);
- else
- status = le_to_host16(mgmt->u.assoc_resp.status_code);
-
- sta = ap_get_sta(hapd, mgmt->da);
- if (!sta) {
- printf("handle_assoc_cb: STA " MACSTR " not found\n",
- MAC2STR(mgmt->da));
- return;
- }
-
- if (status != WLAN_STATUS_SUCCESS)
- goto fail;
-
- /* Stop previous accounting session, if one is started, and allocate
- * new session id for the new session. */
- accounting_sta_stop(hapd, sta);
-
- hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
- HOSTAPD_LEVEL_INFO,
- "associated (aid %d)",
- sta->aid);
-
- if (sta->flags & WLAN_STA_ASSOC)
- new_assoc = 0;
- sta->flags |= WLAN_STA_ASSOC;
- if ((!hapd->conf->ieee802_1x && !hapd->conf->wpa) ||
- sta->auth_alg == WLAN_AUTH_FT) {
- /*
- * Open, static WEP, or FT protocol; no separate authorization
- * step.
- */
- sta->flags |= WLAN_STA_AUTHORIZED;
- wpa_msg(hapd->msg_ctx, MSG_INFO,
- AP_STA_CONNECTED MACSTR, MAC2STR(sta->addr));
- }
-
- if (reassoc)
- mlme_reassociate_indication(hapd, sta);
- else
- mlme_associate_indication(hapd, sta);
-
-#ifdef CONFIG_IEEE80211W
- sta->sa_query_timed_out = 0;
-#endif /* CONFIG_IEEE80211W */
-
- /*
- * Remove the STA entry in order to make sure the STA PS state gets
- * cleared and configuration gets updated in case of reassociation back
- * to the same AP.
- */
- hapd->drv.sta_remove(hapd, sta->addr);
-
-#ifdef CONFIG_IEEE80211N
- if (sta->flags & WLAN_STA_HT)
- hostapd_get_ht_capab(hapd, sta->ht_capabilities, &ht_cap);
-#endif /* CONFIG_IEEE80211N */
-
- if (hapd->drv.sta_add(hapd, sta->addr, sta->aid, sta->capability,
- sta->supported_rates, sta->supported_rates_len,
- sta->listen_interval,
- sta->flags & WLAN_STA_HT ? &ht_cap : NULL)) {
- hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
- HOSTAPD_LEVEL_NOTICE,
- "Could not add STA to kernel driver");
- }
-
- if (sta->eapol_sm == NULL) {
- /*
- * This STA does not use RADIUS server for EAP authentication,
- * so bind it to the selected VLAN interface now, since the
- * interface selection is not going to change anymore.
- */
- if (ap_sta_bind_vlan(hapd, sta, 0) < 0)
- goto fail;
- } else if (sta->vlan_id) {
- /* VLAN ID already set (e.g., by PMKSA caching), so bind STA */
- if (ap_sta_bind_vlan(hapd, sta, 0) < 0)
- goto fail;
- }
-
- hapd->drv.set_sta_flags(hapd, sta);
-
- if (sta->auth_alg == WLAN_AUTH_FT)
- wpa_auth_sm_event(sta->wpa_sm, WPA_ASSOC_FT);
- else
- wpa_auth_sm_event(sta->wpa_sm, WPA_ASSOC);
- hapd->new_assoc_sta_cb(hapd, sta, !new_assoc);
-
- ieee802_1x_notify_port_enabled(sta->eapol_sm, 1);
-
- fail:
- /* Copy of the association request is not needed anymore */
- if (sta->last_assoc_req) {
- os_free(sta->last_assoc_req);
- sta->last_assoc_req = NULL;
- }
-}
-
-
-/**
- * ieee802_11_mgmt_cb - Process management frame TX status callback
- * @hapd: hostapd BSS data structure (the BSS from which the management frame
- * was sent from)
- * @buf: management frame data (starting from IEEE 802.11 header)
- * @len: length of frame data in octets
- * @stype: management frame subtype from frame control field
- * @ok: Whether the frame was ACK'ed
- */
-void ieee802_11_mgmt_cb(struct hostapd_data *hapd, const u8 *buf, size_t len,
- u16 stype, int ok)
-{
- const struct ieee80211_mgmt *mgmt;
- mgmt = (const struct ieee80211_mgmt *) buf;
-
- switch (stype) {
- case WLAN_FC_STYPE_AUTH:
- wpa_printf(MSG_DEBUG, "mgmt::auth cb");
- handle_auth_cb(hapd, mgmt, len, ok);
- break;
- case WLAN_FC_STYPE_ASSOC_RESP:
- wpa_printf(MSG_DEBUG, "mgmt::assoc_resp cb");
- handle_assoc_cb(hapd, mgmt, len, 0, ok);
- break;
- case WLAN_FC_STYPE_REASSOC_RESP:
- wpa_printf(MSG_DEBUG, "mgmt::reassoc_resp cb");
- handle_assoc_cb(hapd, mgmt, len, 1, ok);
- break;
- case WLAN_FC_STYPE_PROBE_RESP:
- wpa_printf(MSG_EXCESSIVE, "mgmt::proberesp cb");
- break;
- case WLAN_FC_STYPE_DEAUTH:
- /* ignore */
- break;
- case WLAN_FC_STYPE_ACTION:
- wpa_printf(MSG_DEBUG, "mgmt::action cb");
- break;
- default:
- printf("unknown mgmt cb frame subtype %d\n", stype);
- break;
- }
-}
-
-
-int ieee802_11_get_mib(struct hostapd_data *hapd, char *buf, size_t buflen)
-{
- /* TODO */
- return 0;
-}
-
-
-int ieee802_11_get_mib_sta(struct hostapd_data *hapd, struct sta_info *sta,
- char *buf, size_t buflen)
-{
- /* TODO */
- return 0;
-}
-
-
-void hostapd_tx_status(struct hostapd_data *hapd, const u8 *addr,
- const u8 *buf, size_t len, int ack)
-{
- struct sta_info *sta;
- struct hostapd_iface *iface = hapd->iface;
-
- sta = ap_get_sta(hapd, addr);
- if (sta == NULL && iface->num_bss > 1) {
- size_t j;
- for (j = 0; j < iface->num_bss; j++) {
- hapd = iface->bss[j];
- sta = ap_get_sta(hapd, addr);
- if (sta)
- break;
- }
- }
- if (sta == NULL)
- return;
- if (sta->flags & WLAN_STA_PENDING_POLL) {
- wpa_printf(MSG_DEBUG, "STA " MACSTR " %s pending "
- "activity poll", MAC2STR(sta->addr),
- ack ? "ACKed" : "did not ACK");
- if (ack)
- sta->flags &= ~WLAN_STA_PENDING_POLL;
- }
-
- ieee802_1x_tx_status(hapd, sta, buf, len, ack);
-}
-
-
-void ieee802_11_rx_from_unknown(struct hostapd_data *hapd, const u8 *src,
- int wds)
-{
- struct sta_info *sta;
-
- sta = ap_get_sta(hapd, src);
- if (sta && (sta->flags & WLAN_STA_ASSOC)) {
- if (wds && !(sta->flags & WLAN_STA_WDS)) {
- wpa_printf(MSG_DEBUG, "Enable 4-address WDS mode for "
- "STA " MACSTR " (aid %u)",
- MAC2STR(sta->addr), sta->aid);
- sta->flags |= WLAN_STA_WDS;
- hapd->drv.set_wds_sta(hapd, sta->addr, sta->aid, 1);
- }
- return;
- }
-
- wpa_printf(MSG_DEBUG, "Data/PS-poll frame from not associated STA "
- MACSTR, MAC2STR(src));
- if (sta && (sta->flags & WLAN_STA_AUTH))
- hapd->drv.sta_disassoc(
- hapd, src,
- WLAN_REASON_CLASS3_FRAME_FROM_NONASSOC_STA);
- else
- hapd->drv.sta_deauth(
- hapd, src,
- WLAN_REASON_CLASS3_FRAME_FROM_NONASSOC_STA);
-}
-
-
-#endif /* CONFIG_NATIVE_WINDOWS */
projects / mech_eap.git / blobdiff