/* * hostapd / WPA authenticator glue code * Copyright (c) 2002-2012, Jouni Malinen * * This software may be distributed under the terms of the BSD license. * See README for more details. */ #include "utils/includes.h" #include "utils/common.h" #include "utils/eloop.h" #include "utils/list.h" #include "common/ieee802_11_defs.h" #include "common/sae.h" #include "common/wpa_ctrl.h" #include "crypto/sha1.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 "eth_p_oui.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" #include "wpa_auth_glue.h" static void hostapd_wpa_auth_conf(struct hostapd_bss_config *conf, struct hostapd_config *iconf, struct wpa_auth_config *wconf) { os_memset(wconf, 0, sizeof(*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->wpa_group_update_count = conf->wpa_group_update_count; wconf->wpa_pairwise_update_count = conf->wpa_pairwise_update_count; 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->disable_pmksa_caching = conf->disable_pmksa_caching; wconf->okc = conf->okc; #ifdef CONFIG_IEEE80211W wconf->ieee80211w = conf->ieee80211w; wconf->group_mgmt_cipher = conf->group_mgmt_cipher; #endif /* CONFIG_IEEE80211W */ #ifdef CONFIG_IEEE80211R_AP wconf->ssid_len = conf->ssid.ssid_len; if (wconf->ssid_len > SSID_MAX_LEN) wconf->ssid_len = SSID_MAX_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->rkh_pos_timeout = conf->rkh_pos_timeout; wconf->rkh_neg_timeout = conf->rkh_neg_timeout; wconf->rkh_pull_timeout = conf->rkh_pull_timeout; wconf->rkh_pull_retries = conf->rkh_pull_retries; wconf->r0kh_list = &conf->r0kh_list; wconf->r1kh_list = &conf->r1kh_list; wconf->pmk_r1_push = conf->pmk_r1_push; wconf->ft_over_ds = conf->ft_over_ds; wconf->ft_psk_generate_local = conf->ft_psk_generate_local; #endif /* CONFIG_IEEE80211R_AP */ #ifdef CONFIG_HS20 wconf->disable_gtk = conf->disable_dgaf; if (conf->osen) { wconf->disable_gtk = 1; wconf->wpa = WPA_PROTO_OSEN; wconf->wpa_key_mgmt = WPA_KEY_MGMT_OSEN; wconf->wpa_pairwise = 0; wconf->wpa_group = WPA_CIPHER_CCMP; wconf->rsn_pairwise = WPA_CIPHER_CCMP; wconf->rsn_preauth = 0; wconf->disable_pmksa_caching = 1; #ifdef CONFIG_IEEE80211W wconf->ieee80211w = 1; #endif /* CONFIG_IEEE80211W */ } #endif /* CONFIG_HS20 */ #ifdef CONFIG_TESTING_OPTIONS wconf->corrupt_gtk_rekey_mic_probability = iconf->corrupt_gtk_rekey_mic_probability; if (conf->own_ie_override && wpabuf_len(conf->own_ie_override) <= MAX_OWN_IE_OVERRIDE) { wconf->own_ie_override_len = wpabuf_len(conf->own_ie_override); os_memcpy(wconf->own_ie_override, wpabuf_head(conf->own_ie_override), wconf->own_ie_override_len); } #endif /* CONFIG_TESTING_OPTIONS */ #ifdef CONFIG_P2P os_memcpy(wconf->ip_addr_go, conf->ip_addr_go, 4); os_memcpy(wconf->ip_addr_mask, conf->ip_addr_mask, 4); os_memcpy(wconf->ip_addr_start, conf->ip_addr_start, 4); os_memcpy(wconf->ip_addr_end, conf->ip_addr_end, 4); #endif /* CONFIG_P2P */ #ifdef CONFIG_FILS wconf->fils_cache_id_set = conf->fils_cache_id_set; os_memcpy(wconf->fils_cache_id, conf->fils_cache_id, FILS_CACHE_ID_LEN); #endif /* CONFIG_FILS */ } 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 int hostapd_wpa_auth_mic_failure_report(void *ctx, const u8 *addr) { struct hostapd_data *hapd = ctx; return michael_mic_failure(hapd, addr, 0); } static void hostapd_wpa_auth_psk_failure_report(void *ctx, const u8 *addr) { struct hostapd_data *hapd = ctx; wpa_msg(hapd->msg_ctx, MSG_INFO, AP_STA_POSSIBLE_PSK_MISMATCH MACSTR, MAC2STR(addr)); } 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 *p2p_dev_addr, const u8 *prev_psk) { struct hostapd_data *hapd = ctx; struct sta_info *sta = ap_get_sta(hapd, addr); const u8 *psk; #ifdef CONFIG_SAE if (sta && sta->auth_alg == WLAN_AUTH_SAE) { if (!sta->sae || prev_psk) return NULL; return sta->sae->pmk; } #endif /* CONFIG_SAE */ #ifdef CONFIG_OWE if ((hapd->conf->wpa_key_mgmt & WPA_KEY_MGMT_OWE) && sta && sta->owe_pmk) return sta->owe_pmk; #endif /* CONFIG_OWE */ psk = hostapd_get_psk(hapd->conf, addr, p2p_dev_addr, prev_psk); /* * This is about to iterate over all psks, prev_psk gives the last * returned psk which should not be returned again. * logic list (all hostapd_get_psk; all sta->psk) */ if (sta && sta->psk && !psk) { struct hostapd_sta_wpa_psk_short *pos; psk = sta->psk->psk; for (pos = sta->psk; pos; pos = pos->next) { if (pos->is_passphrase) { pbkdf2_sha1(pos->passphrase, hapd->conf->ssid.ssid, hapd->conf->ssid.ssid_len, 4096, pos->psk, PMK_LEN); pos->is_passphrase = 0; } if (pos->psk == prev_psk) { psk = pos->next ? pos->next->psk : NULL; break; } } } return 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) { wpa_printf(MSG_DEBUG, "AUTH_GET_MSK: Cannot find STA"); return -1; } key = ieee802_1x_get_key(sta->eapol_sm, &keylen); if (key == NULL) { wpa_printf(MSG_DEBUG, "AUTH_GET_MSK: Key is null, eapol_sm: %p", sta->eapol_sm); 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 hostapd_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; struct sta_info *sta; u32 flags = 0; #ifdef CONFIG_TESTING_OPTIONS if (hapd->ext_eapol_frame_io) { size_t hex_len = 2 * data_len + 1; char *hex = os_malloc(hex_len); if (hex == NULL) return -1; wpa_snprintf_hex(hex, hex_len, data, data_len); wpa_msg(hapd->msg_ctx, MSG_INFO, "EAPOL-TX " MACSTR " %s", MAC2STR(addr), hex); os_free(hex); return 0; } #endif /* CONFIG_TESTING_OPTIONS */ sta = ap_get_sta(hapd, addr); if (sta) flags = hostapd_sta_flags_to_drv(sta->flags); return hostapd_drv_hapd_send_eapol(hapd, addr, data, data_len, encrypt, flags); } 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->interfaces == NULL || hapd->iface->interfaces->for_each_interface == NULL) return -1; data.cb = cb; data.cb_ctx = cb_ctx; return hapd->iface->interfaces->for_each_interface( hapd->iface->interfaces, wpa_auth_iface_iter, &data); } #ifdef CONFIG_IEEE80211R_AP struct wpa_ft_rrb_rx_later_data { struct dl_list list; u8 addr[ETH_ALEN]; size_t data_len; /* followed by data_len octets of data */ }; static void hostapd_wpa_ft_rrb_rx_later(void *eloop_ctx, void *timeout_ctx) { struct hostapd_data *hapd = eloop_ctx; struct wpa_ft_rrb_rx_later_data *data, *n; dl_list_for_each_safe(data, n, &hapd->l2_queue, struct wpa_ft_rrb_rx_later_data, list) { if (hapd->wpa_auth) { wpa_ft_rrb_rx(hapd->wpa_auth, data->addr, (const u8 *) (data + 1), data->data_len); } dl_list_del(&data->list); os_free(data); } } 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 wpa_ft_rrb_rx_later_data *data; struct hostapd_data *hapd; size_t j; for (j = 0; j < iface->num_bss; j++) { hapd = iface->bss[j]; if (hapd == idata->src_hapd || !hapd->wpa_auth || os_memcmp(hapd->own_addr, idata->dst, ETH_ALEN) != 0) continue; 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); /* Defer wpa_ft_rrb_rx() until next eloop step as this is * when it would be triggered when reading from a socket. * This avoids * hapd0:send -> hapd1:recv -> hapd1:send -> hapd0:recv, * that is calling hapd0:recv handler from within * hapd0:send directly. */ data = os_zalloc(sizeof(*data) + idata->data_len); if (!data) return 1; os_memcpy(data->addr, idata->src_hapd->own_addr, ETH_ALEN); os_memcpy(data + 1, idata->data, idata->data_len); data->data_len = idata->data_len; dl_list_add(&hapd->l2_queue, &data->list); if (!eloop_is_timeout_registered(hostapd_wpa_ft_rrb_rx_later, hapd, NULL)) eloop_register_timeout(0, 0, hostapd_wpa_ft_rrb_rx_later, hapd, NULL); return 1; } return 0; } #endif /* CONFIG_IEEE80211R_AP */ 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; struct l2_ethhdr *buf; int ret; #ifdef CONFIG_TESTING_OPTIONS if (hapd->ext_eapol_frame_io && proto == ETH_P_EAPOL) { size_t hex_len = 2 * data_len + 1; char *hex = os_malloc(hex_len); if (hex == NULL) return -1; wpa_snprintf_hex(hex, hex_len, data, data_len); wpa_msg(hapd->msg_ctx, MSG_INFO, "EAPOL-TX " MACSTR " %s", MAC2STR(dst), hex); os_free(hex); return 0; } #endif /* CONFIG_TESTING_OPTIONS */ #ifdef CONFIG_IEEE80211R_AP if (proto == ETH_P_RRB && hapd->iface->interfaces && hapd->iface->interfaces->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->interfaces->for_each_interface( hapd->iface->interfaces, hostapd_wpa_auth_ft_iter, &idata); if (res == 1) return data_len; } #endif /* CONFIG_IEEE80211R_AP */ 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; buf = os_malloc(sizeof(*buf) + data_len); if (buf == NULL) return -1; os_memcpy(buf->h_dest, dst, ETH_ALEN); os_memcpy(buf->h_source, hapd->own_addr, ETH_ALEN); buf->h_proto = host_to_be16(proto); os_memcpy(buf + 1, data, data_len); ret = l2_packet_send(hapd->l2, dst, proto, (u8 *) buf, sizeof(*buf) + data_len); os_free(buf); return ret; } #ifdef CONFIG_ETH_P_OUI static struct eth_p_oui_ctx * hostapd_wpa_get_oui(struct hostapd_data *hapd, u8 oui_suffix) { switch (oui_suffix) { #ifdef CONFIG_IEEE80211R_AP case FT_PACKET_R0KH_R1KH_PULL: return hapd->oui_pull; case FT_PACKET_R0KH_R1KH_RESP: return hapd->oui_resp; case FT_PACKET_R0KH_R1KH_PUSH: return hapd->oui_push; case FT_PACKET_R0KH_R1KH_SEQ_REQ: return hapd->oui_sreq; case FT_PACKET_R0KH_R1KH_SEQ_RESP: return hapd->oui_sresp; #endif /* CONFIG_IEEE80211R_AP */ default: return NULL; } } #endif /* CONFIG_ETH_P_OUI */ #ifdef CONFIG_IEEE80211R_AP struct oui_deliver_later_data { struct dl_list list; u8 src_addr[ETH_ALEN]; u8 dst_addr[ETH_ALEN]; size_t data_len; u8 oui_suffix; /* followed by data_len octets of data */ }; static void hostapd_oui_deliver_later(void *eloop_ctx, void *timeout_ctx) { struct hostapd_data *hapd = eloop_ctx; struct oui_deliver_later_data *data, *n; struct eth_p_oui_ctx *oui_ctx; dl_list_for_each_safe(data, n, &hapd->l2_oui_queue, struct oui_deliver_later_data, list) { oui_ctx = hostapd_wpa_get_oui(hapd, data->oui_suffix); if (hapd->wpa_auth && oui_ctx) { eth_p_oui_deliver(oui_ctx, data->src_addr, data->dst_addr, (const u8 *) (data + 1), data->data_len); } dl_list_del(&data->list); os_free(data); } } struct wpa_auth_oui_iface_iter_data { struct hostapd_data *src_hapd; const u8 *dst_addr; const u8 *data; size_t data_len; u8 oui_suffix; }; static int hostapd_wpa_auth_oui_iter(struct hostapd_iface *iface, void *ctx) { struct wpa_auth_oui_iface_iter_data *idata = ctx; struct oui_deliver_later_data *data; 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 (!is_multicast_ether_addr(idata->dst_addr) && os_memcmp(hapd->own_addr, idata->dst_addr, ETH_ALEN) != 0) continue; /* defer eth_p_oui_deliver until next eloop step as this is * when it would be triggerd from reading from sock * This avoids * hapd0:send -> hapd1:recv -> hapd1:send -> hapd0:recv, * that is calling hapd0:recv handler from within * hapd0:send directly. */ data = os_zalloc(sizeof(*data) + idata->data_len); if (!data) return 1; os_memcpy(data->src_addr, idata->src_hapd->own_addr, ETH_ALEN); os_memcpy(data->dst_addr, idata->dst_addr, ETH_ALEN); os_memcpy(data + 1, idata->data, idata->data_len); data->data_len = idata->data_len; data->oui_suffix = idata->oui_suffix; dl_list_add(&hapd->l2_oui_queue, &data->list); if (!eloop_is_timeout_registered(hostapd_oui_deliver_later, hapd, NULL)) eloop_register_timeout(0, 0, hostapd_oui_deliver_later, hapd, NULL); return 1; } return 0; } #endif /* CONFIG_IEEE80211R_AP */ static int hostapd_wpa_auth_send_oui(void *ctx, const u8 *dst, u8 oui_suffix, const u8 *data, size_t data_len) { #ifdef CONFIG_ETH_P_OUI struct hostapd_data *hapd = ctx; struct eth_p_oui_ctx *oui_ctx; #ifdef CONFIG_IEEE80211R_AP if (hapd->iface->interfaces && hapd->iface->interfaces->for_each_interface) { struct wpa_auth_oui_iface_iter_data idata; int res; idata.src_hapd = hapd; idata.dst_addr = dst; idata.data = data; idata.data_len = data_len; idata.oui_suffix = oui_suffix; res = hapd->iface->interfaces->for_each_interface( hapd->iface->interfaces, hostapd_wpa_auth_oui_iter, &idata); if (res == 1) return data_len; } #endif /* CONFIG_IEEE80211R_AP */ oui_ctx = hostapd_wpa_get_oui(hapd, oui_suffix); if (!oui_ctx) return -1; return eth_p_oui_send(oui_ctx, hapd->own_addr, dst, data, data_len); #else /* CONFIG_ETH_P_OUI */ return -1; #endif /* CONFIG_ETH_P_OUI */ } #ifdef CONFIG_IEEE80211R_AP 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 = hostapd_drv_send_mlme(hapd, (u8 *) m, mlen, 0); 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; if (hostapd_add_sta_node(hapd, sta_addr, WLAN_AUTH_FT) < 0) return NULL; 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, NULL); 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; struct l2_ethhdr *ethhdr; if (len < sizeof(*ethhdr)) return; ethhdr = (struct l2_ethhdr *) buf; wpa_printf(MSG_DEBUG, "FT: RRB received packet " MACSTR " -> " MACSTR, MAC2STR(ethhdr->h_source), MAC2STR(ethhdr->h_dest)); if (!is_multicast_ether_addr(ethhdr->h_dest) && os_memcmp(hapd->own_addr, ethhdr->h_dest, ETH_ALEN) != 0) return; wpa_ft_rrb_rx(hapd->wpa_auth, ethhdr->h_source, buf + sizeof(*ethhdr), len - sizeof(*ethhdr)); } static void hostapd_rrb_oui_receive(void *ctx, const u8 *src_addr, const u8 *dst_addr, u8 oui_suffix, const u8 *buf, size_t len) { struct hostapd_data *hapd = ctx; wpa_printf(MSG_DEBUG, "FT: RRB received packet " MACSTR " -> " MACSTR, MAC2STR(src_addr), MAC2STR(dst_addr)); if (!is_multicast_ether_addr(dst_addr) && os_memcmp(hapd->own_addr, dst_addr, ETH_ALEN) != 0) return; wpa_ft_rrb_oui_rx(hapd->wpa_auth, src_addr, dst_addr, oui_suffix, buf, len); } static int hostapd_wpa_auth_add_tspec(void *ctx, const u8 *sta_addr, u8 *tspec_ie, size_t tspec_ielen) { struct hostapd_data *hapd = ctx; return hostapd_add_tspec(hapd, sta_addr, tspec_ie, tspec_ielen); } static int hostapd_wpa_register_ft_oui(struct hostapd_data *hapd, const char *ft_iface) { hapd->oui_pull = eth_p_oui_register(hapd, ft_iface, FT_PACKET_R0KH_R1KH_PULL, hostapd_rrb_oui_receive, hapd); if (!hapd->oui_pull) return -1; hapd->oui_resp = eth_p_oui_register(hapd, ft_iface, FT_PACKET_R0KH_R1KH_RESP, hostapd_rrb_oui_receive, hapd); if (!hapd->oui_resp) return -1; hapd->oui_push = eth_p_oui_register(hapd, ft_iface, FT_PACKET_R0KH_R1KH_PUSH, hostapd_rrb_oui_receive, hapd); if (!hapd->oui_push) return -1; hapd->oui_sreq = eth_p_oui_register(hapd, ft_iface, FT_PACKET_R0KH_R1KH_SEQ_REQ, hostapd_rrb_oui_receive, hapd); if (!hapd->oui_sreq) return -1; hapd->oui_sresp = eth_p_oui_register(hapd, ft_iface, FT_PACKET_R0KH_R1KH_SEQ_RESP, hostapd_rrb_oui_receive, hapd); if (!hapd->oui_sresp) return -1; return 0; } static void hostapd_wpa_unregister_ft_oui(struct hostapd_data *hapd) { eth_p_oui_unregister(hapd->oui_pull); hapd->oui_pull = NULL; eth_p_oui_unregister(hapd->oui_resp); hapd->oui_resp = NULL; eth_p_oui_unregister(hapd->oui_push); hapd->oui_push = NULL; eth_p_oui_unregister(hapd->oui_sreq); hapd->oui_sreq = NULL; eth_p_oui_unregister(hapd->oui_sresp); hapd->oui_sresp = NULL; } #endif /* CONFIG_IEEE80211R_AP */ int hostapd_setup_wpa(struct hostapd_data *hapd) { struct wpa_auth_config _conf; static const struct wpa_auth_callbacks cb = { .logger = hostapd_wpa_auth_logger, .disconnect = hostapd_wpa_auth_disconnect, .mic_failure_report = hostapd_wpa_auth_mic_failure_report, .psk_failure_report = hostapd_wpa_auth_psk_failure_report, .set_eapol = hostapd_wpa_auth_set_eapol, .get_eapol = hostapd_wpa_auth_get_eapol, .get_psk = hostapd_wpa_auth_get_psk, .get_msk = hostapd_wpa_auth_get_msk, .set_key = hostapd_wpa_auth_set_key, .get_seqnum = hostapd_wpa_auth_get_seqnum, .send_eapol = hostapd_wpa_auth_send_eapol, .for_each_sta = hostapd_wpa_auth_for_each_sta, .for_each_auth = hostapd_wpa_auth_for_each_auth, .send_ether = hostapd_wpa_auth_send_ether, .send_oui = hostapd_wpa_auth_send_oui, #ifdef CONFIG_IEEE80211R_AP .send_ft_action = hostapd_wpa_auth_send_ft_action, .add_sta = hostapd_wpa_auth_add_sta, .add_tspec = hostapd_wpa_auth_add_tspec, #endif /* CONFIG_IEEE80211R_AP */ }; const u8 *wpa_ie; size_t wpa_ie_len; hostapd_wpa_auth_conf(hapd->conf, hapd->iconf, &_conf); if (hapd->iface->drv_flags & WPA_DRIVER_FLAGS_EAPOL_TX_STATUS) _conf.tx_status = 1; if (hapd->iface->drv_flags & WPA_DRIVER_FLAGS_AP_MLME) _conf.ap_mlme = 1; hapd->wpa_auth = wpa_init(hapd->own_addr, &_conf, &cb, hapd); 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_AP if (!hostapd_drv_none(hapd) && wpa_key_mgmt_ft(hapd->conf->wpa_key_mgmt)) { const char *ft_iface; ft_iface = hapd->conf->bridge[0] ? hapd->conf->bridge : hapd->conf->iface; hapd->l2 = l2_packet_init(ft_iface, NULL, ETH_P_RRB, hostapd_rrb_receive, hapd, 1); if (hapd->l2 == NULL && (hapd->driver == NULL || hapd->driver->send_ether == NULL)) { wpa_printf(MSG_ERROR, "Failed to open l2_packet " "interface"); return -1; } if (hostapd_wpa_register_ft_oui(hapd, ft_iface)) { wpa_printf(MSG_ERROR, "Failed to open ETH_P_OUI interface"); return -1; } } #endif /* CONFIG_IEEE80211R_AP */ return 0; } void hostapd_reconfig_wpa(struct hostapd_data *hapd) { struct wpa_auth_config wpa_auth_conf; hostapd_wpa_auth_conf(hapd->conf, hapd->iconf, &wpa_auth_conf); wpa_reconfig(hapd->wpa_auth, &wpa_auth_conf); } void hostapd_deinit_wpa(struct hostapd_data *hapd) { ieee80211_tkip_countermeasures_deinit(hapd); rsn_preauth_iface_deinit(hapd); if (hapd->wpa_auth) { wpa_deinit(hapd->wpa_auth); hapd->wpa_auth = NULL; if (hapd->drv_priv && hostapd_set_privacy(hapd, 0)) { wpa_printf(MSG_DEBUG, "Could not disable " "PrivacyInvoked for interface %s", hapd->conf->iface); } if (hapd->drv_priv && 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_AP eloop_cancel_timeout(hostapd_wpa_ft_rrb_rx_later, hapd, ELOOP_ALL_CTX); hostapd_wpa_ft_rrb_rx_later(hapd, NULL); /* flush without delivering */ eloop_cancel_timeout(hostapd_oui_deliver_later, hapd, ELOOP_ALL_CTX); hostapd_oui_deliver_later(hapd, NULL); /* flush without delivering */ l2_packet_deinit(hapd->l2); hapd->l2 = NULL; hostapd_wpa_unregister_ft_oui(hapd); #endif /* CONFIG_IEEE80211R_AP */ }