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📄 accounting.c(14.53 KB)
📄 accounting.h(1.12 KB)
📄 acs.c(29.71 KB)
📄 acs.h(764 B)
📄 airtime_policy.c(6.82 KB)
📄 airtime_policy.h(1.27 KB)
📄 ap_config.c(33.39 KB)
📄 ap_config.h(26.53 KB)
📄 ap_drv_ops.c(25.84 KB)
📄 ap_drv_ops.h(13.38 KB)
📄 ap_list.c(6.82 KB)
📄 ap_list.h(1.5 KB)
📄 ap_mlme.c(5.64 KB)
📄 ap_mlme.h(1007 B)
📄 authsrv.c(8.72 KB)
📄 authsrv.h(352 B)
📄 beacon.c(40.32 KB)
📄 beacon.h(1.25 KB)
📄 bss_load.c(2.4 KB)
📄 bss_load.h(376 B)
📄 ctrl_iface_ap.c(24.3 KB)
📄 ctrl_iface_ap.h(1.61 KB)
📄 dfs.c(29.35 KB)
📄 dfs.h(1.22 KB)
📄 dhcp_snoop.c(3.36 KB)
📄 dhcp_snoop.h(590 B)
📄 dpp_hostapd.c(48.28 KB)
📄 dpp_hostapd.h(1.74 KB)
📄 drv_callbacks.c(51.68 KB)
📄 eap_user_db.c(7.92 KB)
📄 eth_p_oui.c(4.44 KB)
📄 eth_p_oui.h(958 B)
📄 fils_hlp.c(16.82 KB)
📄 fils_hlp.h(547 B)
📄 gas_query_ap.c(19.53 KB)
📄 gas_query_ap.h(1.24 KB)
📄 gas_serv.c(50.48 KB)
📄 gas_serv.h(3.38 KB)
📄 hostapd.c(89.58 KB)
📄 hostapd.h(17.99 KB)
📄 hs20.c(6.27 KB)
📄 hs20.h(843 B)
📄 hw_features.c(24.77 KB)
📄 hw_features.h(1.93 KB)
📄 iapp.c(14.59 KB)
📄 iapp.h(833 B)
📄 ieee802_11.c(148.71 KB)
📄 ieee802_11.h(7.97 KB)
📄 ieee802_11_auth.c(18.3 KB)
📄 ieee802_11_auth.h(1.04 KB)
📄 ieee802_11_he.c(8.77 KB)
📄 ieee802_11_ht.c(16.22 KB)
📄 ieee802_11_shared.c(23.95 KB)
📄 ieee802_11_vht.c(13.4 KB)
📄 ieee802_1x.c(83.16 KB)
📄 ieee802_1x.h(2.84 KB)
📄 mbo_ap.c(5.22 KB)
📄 mbo_ap.h(1.16 KB)
📄 ndisc_snoop.c(4.3 KB)
📄 ndisc_snoop.h(838 B)
📄 neighbor_db.c(6.49 KB)
📄 neighbor_db.h(940 B)
📄 p2p_hostapd.c(2.57 KB)
📄 p2p_hostapd.h(888 B)
📄 pmksa_cache_auth.c(18.79 KB)
📄 pmksa_cache_auth.h(2.69 KB)
📄 preauth_auth.c(6.47 KB)
📄 preauth_auth.h(1.26 KB)
📄 rrm.c(17.27 KB)
📄 rrm.h(1.21 KB)
📄 sta_info.c(41.42 KB)
📄 sta_info.h(11.63 KB)
📄 taxonomy.c(7.45 KB)
📄 taxonomy.h(766 B)
📄 tkip_countermeasures.c(2.95 KB)
📄 tkip_countermeasures.h(451 B)
📄 utils.c(2.29 KB)
📄 vlan.c(756 B)
📄 vlan.h(727 B)
📄 vlan_full.c(18.35 KB)
📄 vlan_ifconfig.c(1.47 KB)
📄 vlan_init.c(5.88 KB)
📄 vlan_init.h(1.09 KB)
📄 vlan_ioctl.c(3.75 KB)
📄 vlan_util.c(3.9 KB)
📄 vlan_util.h(980 B)
📄 wmm.c(11.47 KB)
📄 wmm.h(653 B)
📄 wnm_ap.c(23.69 KB)
📄 wnm_ap.h(1.08 KB)
📄 wpa_auth.c(140.03 KB)
📄 wpa_auth.h(17.89 KB)
📄 wpa_auth_ft.c(120.89 KB)
📄 wpa_auth_glue.c(35.42 KB)
📄 wpa_auth_glue.h(443 B)
📄 wpa_auth_i.h(8.47 KB)
📄 wpa_auth_ie.c(32.38 KB)
📄 wpa_auth_ie.h(1.14 KB)
📄 wpa_auth_kay.c(12.26 KB)
📄 wpa_auth_kay.h(1.15 KB)
📄 wps_hostapd.c(54.66 KB)
📄 wps_hostapd.h(2.79 KB)
📄 x_snoop.c(3.21 KB)
📄 x_snoop.h(1.29 KB)

Editing: preauth_auth.c

/*
 * hostapd - Authenticator for IEEE 802.11i RSN pre-authentication
 * Copyright (c) 2004-2007, Jouni Malinen <j@w1.fi>
 *
 * This software may be distributed under the terms of the BSD license.
 * See README for more details.
 */

#include "utils/includes.h"

#ifdef CONFIG_RSN_PREAUTH

#include "utils/common.h"
#include "utils/eloop.h"
#include "l2_packet/l2_packet.h"
#include "common/wpa_common.h"
#include "eapol_auth/eapol_auth_sm.h"
#include "eapol_auth/eapol_auth_sm_i.h"
#include "hostapd.h"
#include "ap_config.h"
#include "ieee802_1x.h"
#include "sta_info.h"
#include "wpa_auth.h"
#include "preauth_auth.h"

#ifndef ETH_P_PREAUTH
#define ETH_P_PREAUTH 0x88C7 /* IEEE 802.11i pre-authentication */
#endif /* ETH_P_PREAUTH */

static const int dot11RSNAConfigPMKLifetime = 43200;

struct rsn_preauth_interface {
	struct rsn_preauth_interface *next;
	struct hostapd_data *hapd;
	struct l2_packet_data *l2;
	char *ifname;
	int ifindex;
};

static void rsn_preauth_receive(void *ctx, const u8 *src_addr,
				const u8 *buf, size_t len)
{
	struct rsn_preauth_interface *piface = ctx;
	struct hostapd_data *hapd = piface->hapd;
	struct ieee802_1x_hdr *hdr;
	struct sta_info *sta;
	struct l2_ethhdr *ethhdr;

wpa_printf(MSG_DEBUG, "RSN: receive pre-auth packet "
		   "from interface '%s'", piface->ifname);
	if (len < sizeof(*ethhdr) + sizeof(*hdr)) {
		wpa_printf(MSG_DEBUG, "RSN: too short pre-auth packet "
			   "(len=%lu)", (unsigned long) len);
		return;
	}

ethhdr = (struct l2_ethhdr *) buf;
	hdr = (struct ieee802_1x_hdr *) (ethhdr + 1);

if (os_memcmp(ethhdr->h_dest, hapd->own_addr, ETH_ALEN) != 0) {
		wpa_printf(MSG_DEBUG, "RSN: pre-auth for foreign address "
			   MACSTR, MAC2STR(ethhdr->h_dest));
		return;
	}

sta = ap_get_sta(hapd, ethhdr->h_source);
	if (sta && (sta->flags & WLAN_STA_ASSOC)) {
		wpa_printf(MSG_DEBUG, "RSN: pre-auth for already association "
			   "STA " MACSTR, MAC2STR(sta->addr));
		return;
	}
	if (!sta && hdr->type == IEEE802_1X_TYPE_EAPOL_START) {
		sta = ap_sta_add(hapd, ethhdr->h_source);
		if (sta == NULL)
			return;
		sta->flags = WLAN_STA_PREAUTH;

ieee802_1x_new_station(hapd, sta);
		if (sta->eapol_sm == NULL) {
			ap_free_sta(hapd, sta);
			sta = NULL;
		} else {
			sta->eapol_sm->radius_identifier = -1;
			sta->eapol_sm->portValid = TRUE;
			sta->eapol_sm->flags |= EAPOL_SM_PREAUTH;
		}
	}
	if (sta == NULL)
		return;
	sta->preauth_iface = piface;
	ieee802_1x_receive(hapd, ethhdr->h_source, (u8 *) (ethhdr + 1),
			   len - sizeof(*ethhdr));
}

static int rsn_preauth_iface_add(struct hostapd_data *hapd, const char *ifname)
{
	struct rsn_preauth_interface *piface;

wpa_printf(MSG_DEBUG, "RSN pre-auth interface '%s'", ifname);

piface = os_zalloc(sizeof(*piface));
	if (piface == NULL)
		return -1;
	piface->hapd = hapd;

piface->ifname = os_strdup(ifname);
	if (piface->ifname == NULL) {
		goto fail1;
	}

piface->l2 = l2_packet_init(piface->ifname, NULL, ETH_P_PREAUTH,
				    rsn_preauth_receive, piface, 1);
	if (piface->l2 == NULL) {
		wpa_printf(MSG_ERROR, "Failed to open register layer 2 access "
			   "to ETH_P_PREAUTH");
		goto fail2;
	}

piface->next = hapd->preauth_iface;
	hapd->preauth_iface = piface;
	return 0;

fail2:
	os_free(piface->ifname);
fail1:
	os_free(piface);
	return -1;
}

void rsn_preauth_iface_deinit(struct hostapd_data *hapd)
{
	struct rsn_preauth_interface *piface, *prev;

piface = hapd->preauth_iface;
	hapd->preauth_iface = NULL;
	while (piface) {
		prev = piface;
		piface = piface->next;
		l2_packet_deinit(prev->l2);
		os_free(prev->ifname);
		os_free(prev);
	}
}

int rsn_preauth_iface_init(struct hostapd_data *hapd)
{
	char *tmp, *start, *end;

if (hapd->conf->rsn_preauth_interfaces == NULL)
		return 0;

tmp = os_strdup(hapd->conf->rsn_preauth_interfaces);
	if (tmp == NULL)
		return -1;
	start = tmp;
	for (;;) {
		while (*start == ' ')
			start++;
		if (*start == '\0')
			break;
		end = os_strchr(start, ' ');
		if (end)
			*end = '\0';

if (rsn_preauth_iface_add(hapd, start)) {
			rsn_preauth_iface_deinit(hapd);
			os_free(tmp);
			return -1;
		}

if (end)
			start = end + 1;
		else
			break;
	}
	os_free(tmp);
	return 0;
}

static void rsn_preauth_finished_cb(void *eloop_ctx, void *timeout_ctx)
{
	struct hostapd_data *hapd = eloop_ctx;
	struct sta_info *sta = timeout_ctx;
	wpa_printf(MSG_DEBUG, "RSN: Removing pre-authentication STA entry for "
		   MACSTR, MAC2STR(sta->addr));
	ap_free_sta(hapd, sta);
}

void rsn_preauth_finished(struct hostapd_data *hapd, struct sta_info *sta,
			  int success)
{
	const u8 *key;
	size_t len;
	hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_WPA,
		       HOSTAPD_LEVEL_INFO, "pre-authentication %s",
		       success ? "succeeded" : "failed");

key = ieee802_1x_get_key(sta->eapol_sm, &len);
	if (len > PMK_LEN)
		len = PMK_LEN;
	if (success && key) {
		if (wpa_auth_pmksa_add_preauth(hapd->wpa_auth, key, len,
					       sta->addr,
					       dot11RSNAConfigPMKLifetime,
					       sta->eapol_sm) == 0) {
			hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_WPA,
				       HOSTAPD_LEVEL_DEBUG,
				       "added PMKSA cache entry (pre-auth)");
		} else {
			hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_WPA,
				       HOSTAPD_LEVEL_DEBUG,
				       "failed to add PMKSA cache entry "
				       "(pre-auth)");
		}
	}

/*
	 * Finish STA entry removal from timeout in order to avoid freeing
	 * STA data before the caller has finished processing.
	 */
	eloop_register_timeout(0, 0, rsn_preauth_finished_cb, hapd, sta);
}

void rsn_preauth_send(struct hostapd_data *hapd, struct sta_info *sta,
		      u8 *buf, size_t len)
{
	struct rsn_preauth_interface *piface;
	struct l2_ethhdr *ethhdr;

piface = hapd->preauth_iface;
	while (piface) {
		if (piface == sta->preauth_iface)
			break;
		piface = piface->next;
	}

if (piface == NULL) {
		wpa_printf(MSG_DEBUG, "RSN: Could not find pre-authentication "
			   "interface for " MACSTR, MAC2STR(sta->addr));
		return;
	}

ethhdr = os_malloc(sizeof(*ethhdr) + len);
	if (ethhdr == NULL)
		return;

os_memcpy(ethhdr->h_dest, sta->addr, ETH_ALEN);
	os_memcpy(ethhdr->h_source, hapd->own_addr, ETH_ALEN);
	ethhdr->h_proto = host_to_be16(ETH_P_PREAUTH);
	os_memcpy(ethhdr + 1, buf, len);

if (l2_packet_send(piface->l2, sta->addr, ETH_P_PREAUTH, (u8 *) ethhdr,
			   sizeof(*ethhdr) + len) < 0) {
		wpa_printf(MSG_ERROR, "Failed to send preauth packet using "
			   "l2_packet_send\n");
	}
	os_free(ethhdr);
}

void rsn_preauth_free_station(struct hostapd_data *hapd, struct sta_info *sta)
{
	eloop_cancel_timeout(rsn_preauth_finished_cb, hapd, sta);
}

#endif /* CONFIG_RSN_PREAUTH */

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Editing: preauth_auth.c

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