+++ /dev/null
-/*
- * hostapd / WPA authenticator glue code
- * Copyright (c) 2002-2009, 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 "eapol_auth/eapol_auth_sm_i.h"
-#include "eap_server/eap.h"
-#include "l2_packet/l2_packet.h"
-#include "drivers/driver.h"
-#include "hostapd.h"
-#include "ieee802_1x.h"
-#include "preauth_auth.h"
-#include "sta_info.h"
-#include "tkip_countermeasures.h"
-#include "ap_drv_ops.h"
-#include "ap_config.h"
-#include "wpa_auth.h"
-
-
-#ifdef CONFIG_IEEE80211R
-static void hostapd_rrb_receive(void *ctx, const u8 *src_addr, const u8 *buf,
- size_t len);
-#endif /* CONFIG_IEEE80211R */
-
-
-static void hostapd_wpa_auth_conf(struct hostapd_bss_config *conf,
- struct wpa_auth_config *wconf)
-{
- wconf->wpa = conf->wpa;
- wconf->wpa_key_mgmt = conf->wpa_key_mgmt;
- wconf->wpa_pairwise = conf->wpa_pairwise;
- wconf->wpa_group = conf->wpa_group;
- wconf->wpa_group_rekey = conf->wpa_group_rekey;
- wconf->wpa_strict_rekey = conf->wpa_strict_rekey;
- wconf->wpa_gmk_rekey = conf->wpa_gmk_rekey;
- wconf->wpa_ptk_rekey = conf->wpa_ptk_rekey;
- wconf->rsn_pairwise = conf->rsn_pairwise;
- wconf->rsn_preauth = conf->rsn_preauth;
- wconf->eapol_version = conf->eapol_version;
- wconf->peerkey = conf->peerkey;
- wconf->wmm_enabled = conf->wmm_enabled;
- wconf->wmm_uapsd = conf->wmm_uapsd;
- wconf->okc = conf->okc;
-#ifdef CONFIG_IEEE80211W
- wconf->ieee80211w = conf->ieee80211w;
-#endif /* CONFIG_IEEE80211W */
-#ifdef CONFIG_IEEE80211R
- wconf->ssid_len = conf->ssid.ssid_len;
- if (wconf->ssid_len > SSID_LEN)
- wconf->ssid_len = SSID_LEN;
- os_memcpy(wconf->ssid, conf->ssid.ssid, wconf->ssid_len);
- os_memcpy(wconf->mobility_domain, conf->mobility_domain,
- MOBILITY_DOMAIN_ID_LEN);
- if (conf->nas_identifier &&
- os_strlen(conf->nas_identifier) <= FT_R0KH_ID_MAX_LEN) {
- wconf->r0_key_holder_len = os_strlen(conf->nas_identifier);
- os_memcpy(wconf->r0_key_holder, conf->nas_identifier,
- wconf->r0_key_holder_len);
- }
- os_memcpy(wconf->r1_key_holder, conf->r1_key_holder, FT_R1KH_ID_LEN);
- wconf->r0_key_lifetime = conf->r0_key_lifetime;
- wconf->reassociation_deadline = conf->reassociation_deadline;
- wconf->r0kh_list = conf->r0kh_list;
- wconf->r1kh_list = conf->r1kh_list;
- wconf->pmk_r1_push = conf->pmk_r1_push;
-#endif /* CONFIG_IEEE80211R */
-}
-
-
-static void hostapd_wpa_auth_logger(void *ctx, const u8 *addr,
- logger_level level, const char *txt)
-{
-#ifndef CONFIG_NO_HOSTAPD_LOGGER
- struct hostapd_data *hapd = ctx;
- int hlevel;
-
- switch (level) {
- case LOGGER_WARNING:
- hlevel = HOSTAPD_LEVEL_WARNING;
- break;
- case LOGGER_INFO:
- hlevel = HOSTAPD_LEVEL_INFO;
- break;
- case LOGGER_DEBUG:
- default:
- hlevel = HOSTAPD_LEVEL_DEBUG;
- break;
- }
-
- hostapd_logger(hapd, addr, HOSTAPD_MODULE_WPA, hlevel, "%s", txt);
-#endif /* CONFIG_NO_HOSTAPD_LOGGER */
-}
-
-
-static void hostapd_wpa_auth_disconnect(void *ctx, const u8 *addr,
- u16 reason)
-{
- struct hostapd_data *hapd = ctx;
- wpa_printf(MSG_DEBUG, "%s: WPA authenticator requests disconnect: "
- "STA " MACSTR " reason %d",
- __func__, MAC2STR(addr), reason);
- ap_sta_disconnect(hapd, NULL, addr, reason);
-}
-
-
-static void hostapd_wpa_auth_mic_failure_report(void *ctx, const u8 *addr)
-{
- struct hostapd_data *hapd = ctx;
- michael_mic_failure(hapd, addr, 0);
-}
-
-
-static void hostapd_wpa_auth_set_eapol(void *ctx, const u8 *addr,
- wpa_eapol_variable var, int value)
-{
- struct hostapd_data *hapd = ctx;
- struct sta_info *sta = ap_get_sta(hapd, addr);
- if (sta == NULL)
- return;
- switch (var) {
- case WPA_EAPOL_portEnabled:
- ieee802_1x_notify_port_enabled(sta->eapol_sm, value);
- break;
- case WPA_EAPOL_portValid:
- ieee802_1x_notify_port_valid(sta->eapol_sm, value);
- break;
- case WPA_EAPOL_authorized:
- ieee802_1x_set_sta_authorized(hapd, sta, value);
- break;
- case WPA_EAPOL_portControl_Auto:
- if (sta->eapol_sm)
- sta->eapol_sm->portControl = Auto;
- break;
- case WPA_EAPOL_keyRun:
- if (sta->eapol_sm)
- sta->eapol_sm->keyRun = value ? TRUE : FALSE;
- break;
- case WPA_EAPOL_keyAvailable:
- if (sta->eapol_sm)
- sta->eapol_sm->eap_if->eapKeyAvailable =
- value ? TRUE : FALSE;
- break;
- case WPA_EAPOL_keyDone:
- if (sta->eapol_sm)
- sta->eapol_sm->keyDone = value ? TRUE : FALSE;
- break;
- case WPA_EAPOL_inc_EapolFramesTx:
- if (sta->eapol_sm)
- sta->eapol_sm->dot1xAuthEapolFramesTx++;
- break;
- }
-}
-
-
-static int hostapd_wpa_auth_get_eapol(void *ctx, const u8 *addr,
- wpa_eapol_variable var)
-{
- struct hostapd_data *hapd = ctx;
- struct sta_info *sta = ap_get_sta(hapd, addr);
- if (sta == NULL || sta->eapol_sm == NULL)
- return -1;
- switch (var) {
- case WPA_EAPOL_keyRun:
- return sta->eapol_sm->keyRun;
- case WPA_EAPOL_keyAvailable:
- return sta->eapol_sm->eap_if->eapKeyAvailable;
- default:
- return -1;
- }
-}
-
-
-static const u8 * hostapd_wpa_auth_get_psk(void *ctx, const u8 *addr,
- const u8 *prev_psk)
-{
- struct hostapd_data *hapd = ctx;
- return hostapd_get_psk(hapd->conf, addr, prev_psk);
-}
-
-
-static int hostapd_wpa_auth_get_msk(void *ctx, const u8 *addr, u8 *msk,
- size_t *len)
-{
- struct hostapd_data *hapd = ctx;
- const u8 *key;
- size_t keylen;
- struct sta_info *sta;
-
- sta = ap_get_sta(hapd, addr);
- if (sta == NULL)
- return -1;
-
- key = ieee802_1x_get_key(sta->eapol_sm, &keylen);
- if (key == NULL)
- return -1;
-
- if (keylen > *len)
- keylen = *len;
- os_memcpy(msk, key, keylen);
- *len = keylen;
-
- return 0;
-}
-
-
-static int hostapd_wpa_auth_set_key(void *ctx, int vlan_id, enum wpa_alg alg,
- const u8 *addr, int idx, u8 *key,
- size_t key_len)
-{
- struct hostapd_data *hapd = ctx;
- const char *ifname = hapd->conf->iface;
-
- if (vlan_id > 0) {
- ifname = hostapd_get_vlan_id_ifname(hapd->conf->vlan, vlan_id);
- if (ifname == NULL)
- return -1;
- }
-
- return hapd->drv.set_key(ifname, hapd, alg, addr, idx, 1, NULL, 0,
- key, key_len);
-}
-
-
-static int hostapd_wpa_auth_get_seqnum(void *ctx, const u8 *addr, int idx,
- u8 *seq)
-{
- struct hostapd_data *hapd = ctx;
- return hostapd_get_seqnum(hapd->conf->iface, hapd, addr, idx, seq);
-}
-
-
-static int hostapd_wpa_auth_send_eapol(void *ctx, const u8 *addr,
- const u8 *data, size_t data_len,
- int encrypt)
-{
- struct hostapd_data *hapd = ctx;
- return hapd->drv.send_eapol(hapd, addr, data, data_len, encrypt);
-}
-
-
-static int hostapd_wpa_auth_for_each_sta(
- void *ctx, int (*cb)(struct wpa_state_machine *sm, void *ctx),
- void *cb_ctx)
-{
- struct hostapd_data *hapd = ctx;
- struct sta_info *sta;
-
- for (sta = hapd->sta_list; sta; sta = sta->next) {
- if (sta->wpa_sm && cb(sta->wpa_sm, cb_ctx))
- return 1;
- }
- return 0;
-}
-
-
-struct wpa_auth_iface_iter_data {
- int (*cb)(struct wpa_authenticator *sm, void *ctx);
- void *cb_ctx;
-};
-
-static int wpa_auth_iface_iter(struct hostapd_iface *iface, void *ctx)
-{
- struct wpa_auth_iface_iter_data *data = ctx;
- size_t i;
- for (i = 0; i < iface->num_bss; i++) {
- if (iface->bss[i]->wpa_auth &&
- data->cb(iface->bss[i]->wpa_auth, data->cb_ctx))
- return 1;
- }
- return 0;
-}
-
-
-static int hostapd_wpa_auth_for_each_auth(
- void *ctx, int (*cb)(struct wpa_authenticator *sm, void *ctx),
- void *cb_ctx)
-{
- struct hostapd_data *hapd = ctx;
- struct wpa_auth_iface_iter_data data;
- if (hapd->iface->for_each_interface == NULL)
- return -1;
- data.cb = cb;
- data.cb_ctx = cb_ctx;
- return hapd->iface->for_each_interface(hapd->iface->interfaces,
- wpa_auth_iface_iter, &data);
-}
-
-
-#ifdef CONFIG_IEEE80211R
-
-struct wpa_auth_ft_iface_iter_data {
- struct hostapd_data *src_hapd;
- const u8 *dst;
- const u8 *data;
- size_t data_len;
-};
-
-
-static int hostapd_wpa_auth_ft_iter(struct hostapd_iface *iface, void *ctx)
-{
- struct wpa_auth_ft_iface_iter_data *idata = ctx;
- struct hostapd_data *hapd;
- size_t j;
-
- for (j = 0; j < iface->num_bss; j++) {
- hapd = iface->bss[j];
- if (hapd == idata->src_hapd)
- continue;
- if (os_memcmp(hapd->own_addr, idata->dst, ETH_ALEN) == 0) {
- wpa_printf(MSG_DEBUG, "FT: Send RRB data directly to "
- "locally managed BSS " MACSTR "@%s -> "
- MACSTR "@%s",
- MAC2STR(idata->src_hapd->own_addr),
- idata->src_hapd->conf->iface,
- MAC2STR(hapd->own_addr), hapd->conf->iface);
- hostapd_rrb_receive(hapd, idata->src_hapd->own_addr,
- idata->data, idata->data_len);
- return 1;
- }
- }
-
- return 0;
-}
-
-#endif /* CONFIG_IEEE80211R */
-
-
-static int hostapd_wpa_auth_send_ether(void *ctx, const u8 *dst, u16 proto,
- const u8 *data, size_t data_len)
-{
- struct hostapd_data *hapd = ctx;
-
-#ifdef CONFIG_IEEE80211R
- if (proto == ETH_P_RRB && hapd->iface->for_each_interface) {
- int res;
- struct wpa_auth_ft_iface_iter_data idata;
- idata.src_hapd = hapd;
- idata.dst = dst;
- idata.data = data;
- idata.data_len = data_len;
- res = hapd->iface->for_each_interface(hapd->iface->interfaces,
- hostapd_wpa_auth_ft_iter,
- &idata);
- if (res == 1)
- return data_len;
- }
-#endif /* CONFIG_IEEE80211R */
-
- if (hapd->driver && hapd->driver->send_ether)
- return hapd->driver->send_ether(hapd->drv_priv, dst,
- hapd->own_addr, proto,
- data, data_len);
- if (hapd->l2 == NULL)
- return -1;
- return l2_packet_send(hapd->l2, dst, proto, data, data_len);
-}
-
-
-#ifdef CONFIG_IEEE80211R
-
-static int hostapd_wpa_auth_send_ft_action(void *ctx, const u8 *dst,
- const u8 *data, size_t data_len)
-{
- struct hostapd_data *hapd = ctx;
- int res;
- struct ieee80211_mgmt *m;
- size_t mlen;
- struct sta_info *sta;
-
- sta = ap_get_sta(hapd, dst);
- if (sta == NULL || sta->wpa_sm == NULL)
- return -1;
-
- m = os_zalloc(sizeof(*m) + data_len);
- if (m == NULL)
- return -1;
- mlen = ((u8 *) &m->u - (u8 *) m) + data_len;
- m->frame_control = IEEE80211_FC(WLAN_FC_TYPE_MGMT,
- WLAN_FC_STYPE_ACTION);
- os_memcpy(m->da, dst, ETH_ALEN);
- os_memcpy(m->sa, hapd->own_addr, ETH_ALEN);
- os_memcpy(m->bssid, hapd->own_addr, ETH_ALEN);
- os_memcpy(&m->u, data, data_len);
-
- res = hapd->drv.send_mgmt_frame(hapd, (u8 *) m, mlen);
- os_free(m);
- return res;
-}
-
-
-static struct wpa_state_machine *
-hostapd_wpa_auth_add_sta(void *ctx, const u8 *sta_addr)
-{
- struct hostapd_data *hapd = ctx;
- struct sta_info *sta;
-
- sta = ap_sta_add(hapd, sta_addr);
- if (sta == NULL)
- return NULL;
- if (sta->wpa_sm) {
- sta->auth_alg = WLAN_AUTH_FT;
- return sta->wpa_sm;
- }
-
- sta->wpa_sm = wpa_auth_sta_init(hapd->wpa_auth, sta->addr);
- if (sta->wpa_sm == NULL) {
- ap_free_sta(hapd, sta);
- return NULL;
- }
- sta->auth_alg = WLAN_AUTH_FT;
-
- return sta->wpa_sm;
-}
-
-
-static void hostapd_rrb_receive(void *ctx, const u8 *src_addr, const u8 *buf,
- size_t len)
-{
- struct hostapd_data *hapd = ctx;
- wpa_ft_rrb_rx(hapd->wpa_auth, src_addr, buf, len);
-}
-
-#endif /* CONFIG_IEEE80211R */
-
-
-int hostapd_setup_wpa(struct hostapd_data *hapd)
-{
- struct wpa_auth_config _conf;
- struct wpa_auth_callbacks cb;
- const u8 *wpa_ie;
- size_t wpa_ie_len;
-
- hostapd_wpa_auth_conf(hapd->conf, &_conf);
- os_memset(&cb, 0, sizeof(cb));
- cb.ctx = hapd;
- cb.logger = hostapd_wpa_auth_logger;
- cb.disconnect = hostapd_wpa_auth_disconnect;
- cb.mic_failure_report = hostapd_wpa_auth_mic_failure_report;
- cb.set_eapol = hostapd_wpa_auth_set_eapol;
- cb.get_eapol = hostapd_wpa_auth_get_eapol;
- cb.get_psk = hostapd_wpa_auth_get_psk;
- cb.get_msk = hostapd_wpa_auth_get_msk;
- cb.set_key = hostapd_wpa_auth_set_key;
- cb.get_seqnum = hostapd_wpa_auth_get_seqnum;
- cb.send_eapol = hostapd_wpa_auth_send_eapol;
- cb.for_each_sta = hostapd_wpa_auth_for_each_sta;
- cb.for_each_auth = hostapd_wpa_auth_for_each_auth;
- cb.send_ether = hostapd_wpa_auth_send_ether;
-#ifdef CONFIG_IEEE80211R
- cb.send_ft_action = hostapd_wpa_auth_send_ft_action;
- cb.add_sta = hostapd_wpa_auth_add_sta;
-#endif /* CONFIG_IEEE80211R */
- hapd->wpa_auth = wpa_init(hapd->own_addr, &_conf, &cb);
- if (hapd->wpa_auth == NULL) {
- wpa_printf(MSG_ERROR, "WPA initialization failed.");
- return -1;
- }
-
- if (hostapd_set_privacy(hapd, 1)) {
- wpa_printf(MSG_ERROR, "Could not set PrivacyInvoked "
- "for interface %s", hapd->conf->iface);
- return -1;
- }
-
- wpa_ie = wpa_auth_get_wpa_ie(hapd->wpa_auth, &wpa_ie_len);
- if (hostapd_set_generic_elem(hapd, wpa_ie, wpa_ie_len)) {
- wpa_printf(MSG_ERROR, "Failed to configure WPA IE for "
- "the kernel driver.");
- return -1;
- }
-
- if (rsn_preauth_iface_init(hapd)) {
- wpa_printf(MSG_ERROR, "Initialization of RSN "
- "pre-authentication failed.");
- return -1;
- }
-
-#ifdef CONFIG_IEEE80211R
- if (!hostapd_drv_none(hapd)) {
- hapd->l2 = l2_packet_init(hapd->conf->bridge[0] ?
- hapd->conf->bridge :
- hapd->conf->iface, NULL, ETH_P_RRB,
- hostapd_rrb_receive, hapd, 0);
- if (hapd->l2 == NULL &&
- (hapd->driver == NULL ||
- hapd->driver->send_ether == NULL)) {
- wpa_printf(MSG_ERROR, "Failed to open l2_packet "
- "interface");
- return -1;
- }
- }
-#endif /* CONFIG_IEEE80211R */
-
- return 0;
-
-}
-
-
-void hostapd_reconfig_wpa(struct hostapd_data *hapd)
-{
- struct wpa_auth_config wpa_auth_conf;
- hostapd_wpa_auth_conf(hapd->conf, &wpa_auth_conf);
- wpa_reconfig(hapd->wpa_auth, &wpa_auth_conf);
-}
-
-
-void hostapd_deinit_wpa(struct hostapd_data *hapd)
-{
- rsn_preauth_iface_deinit(hapd);
- if (hapd->wpa_auth) {
- wpa_deinit(hapd->wpa_auth);
- hapd->wpa_auth = NULL;
-
- if (hostapd_set_privacy(hapd, 0)) {
- wpa_printf(MSG_DEBUG, "Could not disable "
- "PrivacyInvoked for interface %s",
- hapd->conf->iface);
- }
-
- if (hostapd_set_generic_elem(hapd, (u8 *) "", 0)) {
- wpa_printf(MSG_DEBUG, "Could not remove generic "
- "information element from interface %s",
- hapd->conf->iface);
- }
- }
- ieee802_1x_deinit(hapd);
-
-#ifdef CONFIG_IEEE80211R
- l2_packet_deinit(hapd->l2);
-#endif /* CONFIG_IEEE80211R */
-}
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