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fragattacks/hostapd/hostapd.c
Jouni Malinen 581a8cde77 Added support for enforcing frequent PTK rekeying 
Added a new configuration option, wpa_ptk_rekey, that can be used to
enforce frequent PTK rekeying, e.g., to mitigate some attacks against TKIP
deficiencies. This can be set either by the Authenticator (to initiate
periodic 4-way handshake to rekey PTK) or by the Supplicant (to request
Authenticator to rekey PTK).

With both wpa_ptk_rekey and wpa_group_rekey (in hostapd) set to 600, TKIP
keys will not be used for more than 10 minutes which may make some attacks
against TKIP more difficult to implement.
2008-11-06 19:57:21 +02:00

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/*
* hostapd / Initialization and configuration
* Copyright (c) 2002-2008, 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 "includes.h"
#ifndef CONFIG_NATIVE_WINDOWS
#include <syslog.h>
#endif /* CONFIG_NATIVE_WINDOWS */
#include "eloop.h"
#include "hostapd.h"
#include "ieee802_1x.h"
#include "ieee802_11.h"
#include "beacon.h"
#include "hw_features.h"
#include "accounting.h"
#include "eapol_sm.h"
#include "iapp.h"
#include "ap.h"
#include "ieee802_11_auth.h"
#include "ap_list.h"
#include "sta_info.h"
#include "driver.h"
#include "radius/radius_client.h"
#include "radius/radius_server.h"
#include "wpa.h"
#include "preauth.h"
#include "wme.h"
#include "vlan_init.h"
#include "ctrl_iface.h"
#include "tls.h"
#include "eap_server/eap_sim_db.h"
#include "eap_server/eap.h"
#include "eap_server/tncs.h"
#include "version.h"
#include "l2_packet/l2_packet.h"
static int hostapd_radius_get_eap_user(void *ctx, const u8 *identity,
size_t identity_len, int phase2,
struct eap_user *user);
struct hapd_interfaces {
size_t count;
struct hostapd_iface **iface;
};
unsigned char rfc1042_header[6] = { 0xaa, 0xaa, 0x03, 0x00, 0x00, 0x00 };
extern int wpa_debug_level;
extern int wpa_debug_show_keys;
extern int wpa_debug_timestamp;
static void hostapd_logger_cb(void *ctx, const u8 *addr, unsigned int module,
int level, const char *txt, size_t len)
{
struct hostapd_data *hapd = ctx;
char *format, *module_str;
int maxlen;
int conf_syslog_level, conf_stdout_level;
unsigned int conf_syslog, conf_stdout;
maxlen = len + 100;
format = os_malloc(maxlen);
if (!format)
return;
if (hapd && hapd->conf) {
conf_syslog_level = hapd->conf->logger_syslog_level;
conf_stdout_level = hapd->conf->logger_stdout_level;
conf_syslog = hapd->conf->logger_syslog;
conf_stdout = hapd->conf->logger_stdout;
} else {
conf_syslog_level = conf_stdout_level = 0;
conf_syslog = conf_stdout = (unsigned int) -1;
}
switch (module) {
case HOSTAPD_MODULE_IEEE80211:
module_str = "IEEE 802.11";
break;
case HOSTAPD_MODULE_IEEE8021X:
module_str = "IEEE 802.1X";
break;
case HOSTAPD_MODULE_RADIUS:
module_str = "RADIUS";
break;
case HOSTAPD_MODULE_WPA:
module_str = "WPA";
break;
case HOSTAPD_MODULE_DRIVER:
module_str = "DRIVER";
break;
case HOSTAPD_MODULE_IAPP:
module_str = "IAPP";
break;
case HOSTAPD_MODULE_MLME:
module_str = "MLME";
break;
default:
module_str = NULL;
break;
}
if (hapd && hapd->conf && addr)
os_snprintf(format, maxlen, "%s: STA " MACSTR "%s%s: %s",
hapd->conf->iface, MAC2STR(addr),
module_str ? " " : "", module_str, txt);
else if (hapd && hapd->conf)
os_snprintf(format, maxlen, "%s:%s%s %s",
hapd->conf->iface, module_str ? " " : "",
module_str, txt);
else if (addr)
os_snprintf(format, maxlen, "STA " MACSTR "%s%s: %s",
MAC2STR(addr), module_str ? " " : "",
module_str, txt);
else
os_snprintf(format, maxlen, "%s%s%s",
module_str, module_str ? ": " : "", txt);
if ((conf_stdout & module) && level >= conf_stdout_level) {
wpa_debug_print_timestamp();
printf("%s\n", format);
}
#ifndef CONFIG_NATIVE_WINDOWS
if ((conf_syslog & module) && level >= conf_syslog_level) {
int priority;
switch (level) {
case HOSTAPD_LEVEL_DEBUG_VERBOSE:
case HOSTAPD_LEVEL_DEBUG:
priority = LOG_DEBUG;
break;
case HOSTAPD_LEVEL_INFO:
priority = LOG_INFO;
break;
case HOSTAPD_LEVEL_NOTICE:
priority = LOG_NOTICE;
break;
case HOSTAPD_LEVEL_WARNING:
priority = LOG_WARNING;
break;
default:
priority = LOG_INFO;
break;
}
syslog(priority, "%s", format);
}
#endif /* CONFIG_NATIVE_WINDOWS */
os_free(format);
}
static void hostapd_deauth_all_stas(struct hostapd_data *hapd)
{
u8 addr[ETH_ALEN];
/* New Prism2.5/3 STA firmware versions seem to have issues with this
* broadcast deauth frame. This gets the firmware in odd state where
* nothing works correctly, so let's skip sending this for the hostap
* driver. */
if (hapd->driver && os_strcmp(hapd->driver->name, "hostap") != 0) {
os_memset(addr, 0xff, ETH_ALEN);
hostapd_sta_deauth(hapd, addr,
WLAN_REASON_PREV_AUTH_NOT_VALID);
}
}
/**
* hostapd_prune_associations - Remove extraneous associations
* @hapd: Pointer to BSS data for the most recent association
* @sta: Pointer to the associated STA data
*
* This function looks through all radios and BSS's for previous
* (stale) associations of STA. If any are found they are removed.
*/
static void hostapd_prune_associations(struct hostapd_data *hapd,
struct sta_info *sta)
{
struct sta_info *osta;
struct hostapd_data *ohapd;
size_t i, j;
struct hapd_interfaces *interfaces = eloop_get_user_data();
for (i = 0; i < interfaces->count; i++) {
for (j = 0; j < interfaces->iface[i]->num_bss; j++) {
ohapd = interfaces->iface[i]->bss[j];
if (ohapd == hapd)
continue;
osta = ap_get_sta(ohapd, sta->addr);
if (!osta)
continue;
ap_sta_disassociate(ohapd, osta,
WLAN_REASON_UNSPECIFIED);
}
}
}
/**
* hostapd_new_assoc_sta - Notify that a new station associated with the AP
* @hapd: Pointer to BSS data
* @sta: Pointer to the associated STA data
* @reassoc: 1 to indicate this was a re-association; 0 = first association
*
* This function will be called whenever a station associates with the AP. It
* can be called for ieee802_11.c for drivers that export MLME to hostapd and
* from driver_*.c for drivers that take care of management frames (IEEE 802.11
* authentication and association) internally.
*/
void hostapd_new_assoc_sta(struct hostapd_data *hapd, struct sta_info *sta,
int reassoc)
{
if (hapd->tkip_countermeasures) {
hostapd_sta_deauth(hapd, sta->addr,
WLAN_REASON_MICHAEL_MIC_FAILURE);
return;
}
hostapd_prune_associations(hapd, sta);
/* IEEE 802.11F (IAPP) */
if (hapd->conf->ieee802_11f)
iapp_new_station(hapd->iapp, sta);
/* Start accounting here, if IEEE 802.1X and WPA are not used.
* IEEE 802.1X/WPA code will start accounting after the station has
* been authorized. */
if (!hapd->conf->ieee802_1x && !hapd->conf->wpa)
accounting_sta_start(hapd, sta);
hostapd_wme_sta_config(hapd, sta);
/* Start IEEE 802.1X authentication process for new stations */
ieee802_1x_new_station(hapd, sta);
if (reassoc) {
if (sta->auth_alg != WLAN_AUTH_FT)
wpa_auth_sm_event(sta->wpa_sm, WPA_REAUTH);
} else
wpa_auth_sta_associated(hapd->wpa_auth, sta->wpa_sm);
}
#ifdef EAP_SERVER
static int hostapd_sim_db_cb_sta(struct hostapd_data *hapd,
struct sta_info *sta, void *ctx)
{
if (eapol_auth_eap_pending_cb(sta->eapol_sm, ctx) == 0)
return 1;
return 0;
}
static void hostapd_sim_db_cb(void *ctx, void *session_ctx)
{
struct hostapd_data *hapd = ctx;
if (ap_for_each_sta(hapd, hostapd_sim_db_cb_sta, session_ctx) == 0)
radius_server_eap_pending_cb(hapd->radius_srv, session_ctx);
}
#endif /* EAP_SERVER */
static void handle_term(int sig, void *eloop_ctx, void *signal_ctx)
{
printf("Signal %d received - terminating\n", sig);
eloop_terminate();
}
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->wme_enabled = conf->wme_enabled;
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 */
}
#ifndef CONFIG_NATIVE_WINDOWS
static void handle_reload(int sig, void *eloop_ctx, void *signal_ctx)
{
struct hapd_interfaces *hapds = (struct hapd_interfaces *) eloop_ctx;
struct hostapd_config *newconf;
size_t i;
struct wpa_auth_config wpa_auth_conf;
printf("Signal %d received - reloading configuration\n", sig);
for (i = 0; i < hapds->count; i++) {
struct hostapd_data *hapd = hapds->iface[i]->bss[0];
newconf = hostapd_config_read(hapds->iface[i]->config_fname);
if (newconf == NULL) {
printf("Failed to read new configuration file - "
"continuing with old.\n");
continue;
}
/* TODO: update dynamic data based on changed configuration
* items (e.g., open/close sockets, remove stations added to
* deny list, etc.) */
radius_client_flush(hapd->radius, 0);
hostapd_config_free(hapd->iconf);
hostapd_wpa_auth_conf(&newconf->bss[0], &wpa_auth_conf);
wpa_reconfig(hapd->wpa_auth, &wpa_auth_conf);
hapd->iconf = newconf;
hapd->conf = &newconf->bss[0];
hapds->iface[i]->conf = newconf;
if (hostapd_setup_wpa_psk(hapd->conf)) {
wpa_printf(MSG_ERROR, "Failed to re-configure WPA PSK "
"after reloading configuration");
}
}
}
#ifdef HOSTAPD_DUMP_STATE
static void hostapd_dump_state(struct hostapd_data *hapd)
{
FILE *f;
time_t now;
struct sta_info *sta;
int i;
char *buf;
if (!hapd->conf->dump_log_name) {
printf("Dump file not defined - ignoring dump request\n");
return;
}
printf("Dumping hostapd state to '%s'\n", hapd->conf->dump_log_name);
f = fopen(hapd->conf->dump_log_name, "w");
if (f == NULL) {
printf("Could not open dump file '%s' for writing.\n",
hapd->conf->dump_log_name);
return;
}
time(&now);
fprintf(f, "hostapd state dump - %s", ctime(&now));
fprintf(f, "num_sta=%d num_sta_non_erp=%d "
"num_sta_no_short_slot_time=%d\n"
"num_sta_no_short_preamble=%d\n",
hapd->num_sta, hapd->iface->num_sta_non_erp,
hapd->iface->num_sta_no_short_slot_time,
hapd->iface->num_sta_no_short_preamble);
for (sta = hapd->sta_list; sta != NULL; sta = sta->next) {
fprintf(f, "\nSTA=" MACSTR "\n", MAC2STR(sta->addr));
fprintf(f,
" AID=%d flags=0x%x %s%s%s%s%s%s%s%s%s%s%s%s\n"
" capability=0x%x listen_interval=%d\n",
sta->aid,
sta->flags,
(sta->flags & WLAN_STA_AUTH ? "[AUTH]" : ""),
(sta->flags & WLAN_STA_ASSOC ? "[ASSOC]" : ""),
(sta->flags & WLAN_STA_PS ? "[PS]" : ""),
(sta->flags & WLAN_STA_TIM ? "[TIM]" : ""),
(sta->flags & WLAN_STA_PERM ? "[PERM]" : ""),
(sta->flags & WLAN_STA_AUTHORIZED ? "[AUTHORIZED]" :
""),
(sta->flags & WLAN_STA_PENDING_POLL ? "[PENDING_POLL" :
""),
(sta->flags & WLAN_STA_SHORT_PREAMBLE ?
"[SHORT_PREAMBLE]" : ""),
(sta->flags & WLAN_STA_PREAUTH ? "[PREAUTH]" : ""),
(sta->flags & WLAN_STA_WME ? "[WME]" : ""),
(sta->flags & WLAN_STA_MFP ? "[MFP]" : ""),
(sta->flags & WLAN_STA_NONERP ? "[NonERP]" : ""),
sta->capability,
sta->listen_interval);
fprintf(f, " supported_rates=");
for (i = 0; i < sta->supported_rates_len; i++)
fprintf(f, "%02x ", sta->supported_rates[i]);
fprintf(f, "\n");
fprintf(f,
" timeout_next=%s\n",
(sta->timeout_next == STA_NULLFUNC ? "NULLFUNC POLL" :
(sta->timeout_next == STA_DISASSOC ? "DISASSOC" :
"DEAUTH")));
ieee802_1x_dump_state(f, " ", sta);
}
buf = os_malloc(4096);
if (buf) {
int count = radius_client_get_mib(hapd->radius, buf, 4096);
if (count < 0)
count = 0;
else if (count > 4095)
count = 4095;
buf[count] = '\0';
fprintf(f, "%s", buf);
count = radius_server_get_mib(hapd->radius_srv, buf, 4096);
if (count < 0)
count = 0;
else if (count > 4095)
count = 4095;
buf[count] = '\0';
fprintf(f, "%s", buf);
os_free(buf);
}
fclose(f);
}
#endif /* HOSTAPD_DUMP_STATE */
static void handle_dump_state(int sig, void *eloop_ctx, void *signal_ctx)
{
#ifdef HOSTAPD_DUMP_STATE
struct hapd_interfaces *hapds = (struct hapd_interfaces *) eloop_ctx;
size_t i, j;
for (i = 0; i < hapds->count; i++) {
struct hostapd_iface *hapd_iface = hapds->iface[i];
for (j = 0; j < hapd_iface->num_bss; j++)
hostapd_dump_state(hapd_iface->bss[j]);
}
#endif /* HOSTAPD_DUMP_STATE */
}
#endif /* CONFIG_NATIVE_WINDOWS */
static void hostapd_broadcast_key_clear_iface(struct hostapd_data *hapd,
char *ifname)
{
int i;
for (i = 0; i < NUM_WEP_KEYS; i++) {
if (hostapd_set_encryption(ifname, hapd, "none", NULL, i, NULL,
0, i == 0 ? 1 : 0)) {
printf("Failed to clear default encryption keys "
"(ifname=%s keyidx=%d)\n", ifname, i);
}
}
}
static int hostapd_broadcast_wep_clear(struct hostapd_data *hapd)
{
hostapd_broadcast_key_clear_iface(hapd, hapd->conf->iface);
return 0;
}
static int hostapd_broadcast_wep_set(struct hostapd_data *hapd)
{
int errors = 0, idx;
struct hostapd_ssid *ssid = &hapd->conf->ssid;
idx = ssid->wep.idx;
if (ssid->wep.default_len &&
hostapd_set_encryption(hapd->conf->iface,
hapd, "WEP", NULL, idx,
ssid->wep.key[idx],
ssid->wep.len[idx],
idx == ssid->wep.idx)) {
printf("Could not set WEP encryption.\n");
errors++;
}
if (ssid->dyn_vlan_keys) {
size_t i;
for (i = 0; i <= ssid->max_dyn_vlan_keys; i++) {
const char *ifname;
struct hostapd_wep_keys *key = ssid->dyn_vlan_keys[i];
if (key == NULL)
continue;
ifname = hostapd_get_vlan_id_ifname(hapd->conf->vlan,
i);
if (ifname == NULL)
continue;
idx = key->idx;
if (hostapd_set_encryption(ifname, hapd, "WEP", NULL,
idx, key->key[idx],
key->len[idx],
idx == key->idx)) {
printf("Could not set dynamic VLAN WEP "
"encryption.\n");
errors++;
}
}
}
return errors;
}
/**
* hostapd_cleanup - Per-BSS cleanup (deinitialization)
* @hapd: Pointer to BSS data
*
* This function is used to free all per-BSS data structures and resources.
* This gets called in a loop for each BSS between calls to
* hostapd_cleanup_iface_pre() and hostapd_cleanup_iface() when an interface
* is deinitialized. Most of the modules that are initialized in
* hostapd_setup_bss() are deinitialized here.
*/
static void hostapd_cleanup(struct hostapd_data *hapd)
{
hostapd_ctrl_iface_deinit(hapd);
os_free(hapd->default_wep_key);
hapd->default_wep_key = NULL;
iapp_deinit(hapd->iapp);
hapd->iapp = NULL;
accounting_deinit(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);
vlan_deinit(hapd);
hostapd_acl_deinit(hapd);
radius_client_deinit(hapd->radius);
hapd->radius = NULL;
radius_server_deinit(hapd->radius_srv);
hapd->radius_srv = NULL;
#ifdef CONFIG_IEEE80211R
l2_packet_deinit(hapd->l2);
#endif /* CONFIG_IEEE80211R */
hostapd_wireless_event_deinit(hapd);
#ifdef EAP_TLS_FUNCS
if (hapd->ssl_ctx) {
tls_deinit(hapd->ssl_ctx);
hapd->ssl_ctx = NULL;
}
#endif /* EAP_TLS_FUNCS */
#ifdef EAP_SERVER
if (hapd->eap_sim_db_priv) {
eap_sim_db_deinit(hapd->eap_sim_db_priv);
hapd->eap_sim_db_priv = NULL;
}
#endif /* EAP_SERVER */
if (hapd->interface_added &&
hostapd_bss_remove(hapd, hapd->conf->iface)) {
printf("Failed to remove BSS interface %s\n",
hapd->conf->iface);
}
}
/**
* hostapd_cleanup_iface_pre - Preliminary per-interface cleanup
* @iface: Pointer to interface data
*
* This function is called before per-BSS data structures are deinitialized
* with hostapd_cleanup().
*/
static void hostapd_cleanup_iface_pre(struct hostapd_iface *iface)
{
}
/**
* hostapd_cleanup_iface - Complete per-interface cleanup
* @iface: Pointer to interface data
*
* This function is called after per-BSS data structures are deinitialized
* with hostapd_cleanup().
*/
static void hostapd_cleanup_iface(struct hostapd_iface *iface)
{
hostapd_free_hw_features(iface->hw_features, iface->num_hw_features);
iface->hw_features = NULL;
os_free(iface->current_rates);
iface->current_rates = NULL;
ap_list_deinit(iface);
hostapd_config_free(iface->conf);
iface->conf = NULL;
os_free(iface->config_fname);
os_free(iface->bss);
os_free(iface);
}
static int hostapd_setup_encryption(char *iface, struct hostapd_data *hapd)
{
int i;
hostapd_broadcast_wep_set(hapd);
if (hapd->conf->ssid.wep.default_len)
return 0;
for (i = 0; i < 4; i++) {
if (hapd->conf->ssid.wep.key[i] &&
hostapd_set_encryption(iface, hapd, "WEP", NULL,
i, hapd->conf->ssid.wep.key[i],
hapd->conf->ssid.wep.len[i],
i == hapd->conf->ssid.wep.idx)) {
printf("Could not set WEP encryption.\n");
return -1;
}
if (hapd->conf->ssid.wep.key[i] &&
i == hapd->conf->ssid.wep.idx)
hostapd_set_privacy(hapd, 1);
}
return 0;
}
static int hostapd_flush_old_stations(struct hostapd_data *hapd)
{
int ret = 0;
if (hostapd_drv_none(hapd))
return 0;
wpa_printf(MSG_DEBUG, "Flushing old station entries");
if (hostapd_flush(hapd)) {
printf("Could not connect to kernel driver.\n");
ret = -1;
}
wpa_printf(MSG_DEBUG, "Deauthenticate all stations");
hostapd_deauth_all_stas(hapd);
return ret;
}
static void hostapd_wpa_auth_logger(void *ctx, const u8 *addr,
logger_level level, const char *txt)
{
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);
}
static void hostapd_wpa_auth_disconnect(void *ctx, const u8 *addr,
u16 reason)
{
struct hostapd_data *hapd = ctx;
struct sta_info *sta;
wpa_printf(MSG_DEBUG, "%s: WPA authenticator requests disconnect: "
"STA " MACSTR " reason %d",
__func__, MAC2STR(addr), reason);
sta = ap_get_sta(hapd, addr);
hostapd_sta_deauth(hapd, addr, reason);
if (sta == NULL)
return;
sta->flags &= ~(WLAN_STA_AUTH | WLAN_STA_ASSOC | WLAN_STA_AUTHORIZED);
eloop_cancel_timeout(ap_handle_timer, hapd, sta);
eloop_register_timeout(0, 0, ap_handle_timer, hapd, sta);
sta->timeout_next = STA_REMOVE;
}
static void hostapd_wpa_auth_mic_failure_report(void *ctx, const u8 *addr)
{
struct hostapd_data *hapd = ctx;
ieee80211_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, const char *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_set_encryption(ifname, hapd, alg, addr, idx,
key, key_len, 1);
}
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_get_seqnum_igtk(void *ctx, const u8 *addr, int idx,
u8 *seq)
{
struct hostapd_data *hapd = ctx;
return hostapd_get_seqnum_igtk(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 hostapd_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;
}
static int hostapd_wpa_auth_for_each_auth(
void *ctx, int (*cb)(struct wpa_authenticator *sm, void *ctx),
void *cb_ctx)
{
struct hostapd_data *ohapd;
size_t i, j;
struct hapd_interfaces *interfaces = eloop_get_user_data();
for (i = 0; i < interfaces->count; i++) {
for (j = 0; j < interfaces->iface[i]->num_bss; j++) {
ohapd = interfaces->iface[i]->bss[j];
if (cb(ohapd->wpa_auth, cb_ctx))
return 1;
}
}
return 0;
}
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;
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 = hostapd_send_mgmt_frame(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;
sta = ap_sta_add(hapd, sta_addr);
if (sta == NULL)
return NULL;
if (sta->wpa_sm)
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 */
/**
* hostapd_validate_bssid_configuration - Validate BSSID configuration
* @iface: Pointer to interface data
* Returns: 0 on success, -1 on failure
*
* This function is used to validate that the configured BSSIDs are valid.
*/
static int hostapd_validate_bssid_configuration(struct hostapd_iface *iface)
{
u8 mask[ETH_ALEN] = { 0 };
struct hostapd_data *hapd = iface->bss[0];
unsigned int i = iface->conf->num_bss, bits = 0, j;
int res;
if (hostapd_drv_none(hapd))
return 0;
/* Generate BSSID mask that is large enough to cover the BSSIDs. */
/* Determine the bits necessary to cover the number of BSSIDs. */
for (i--; i; i >>= 1)
bits++;
/* Determine the bits necessary to any configured BSSIDs,
if they are higher than the number of BSSIDs. */
for (j = 0; j < iface->conf->num_bss; j++) {
if (hostapd_mac_comp_empty(iface->conf->bss[j].bssid) == 0)
continue;
for (i = 0; i < ETH_ALEN; i++) {
mask[i] |=
iface->conf->bss[j].bssid[i] ^
hapd->own_addr[i];
}
}
for (i = 0; i < ETH_ALEN && mask[i] == 0; i++)
;
j = 0;
if (i < ETH_ALEN) {
j = (5 - i) * 8;
while (mask[i] != 0) {
mask[i] >>= 1;
j++;
}
}
if (bits < j)
bits = j;
if (bits > 40)
return -1;
os_memset(mask, 0xff, ETH_ALEN);
j = bits / 8;
for (i = 5; i > 5 - j; i--)
mask[i] = 0;
j = bits % 8;
while (j--)
mask[i] <<= 1;
wpa_printf(MSG_DEBUG, "BSS count %lu, BSSID mask " MACSTR " (%d bits)",
(unsigned long) iface->conf->num_bss, MAC2STR(mask), bits);
res = hostapd_valid_bss_mask(hapd, hapd->own_addr, mask);
if (res == 0)
return 0;
if (res < 0) {
printf("Driver did not accept BSSID mask " MACSTR " for start "
"address " MACSTR ".\n",
MAC2STR(mask), MAC2STR(hapd->own_addr));
return -1;
}
for (i = 0; i < ETH_ALEN; i++) {
if ((hapd->own_addr[i] & mask[i]) != hapd->own_addr[i]) {
printf("Invalid BSSID mask " MACSTR " for start "
"address " MACSTR ".\n"
"Start address must be the first address in the"
" block (i.e., addr AND mask == addr).\n",
MAC2STR(mask), MAC2STR(hapd->own_addr));
return -1;
}
}
return 0;
}
static int mac_in_conf(struct hostapd_config *conf, const void *a)
{
size_t i;
for (i = 0; i < conf->num_bss; i++) {
if (hostapd_mac_comp(conf->bss[i].bssid, a) == 0) {
return 1;
}
}
return 0;
}
static 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.get_seqnum_igtk = hostapd_wpa_auth_get_seqnum_igtk;
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) {
printf("WPA initialization failed.\n");
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)) {
printf("Initialization of RSN pre-authentication "
"failed.\n");
return -1;
}
return 0;
}
static int hostapd_setup_radius_srv(struct hostapd_data *hapd,
struct hostapd_bss_config *conf)
{
struct radius_server_conf srv;
os_memset(&srv, 0, sizeof(srv));
srv.client_file = conf->radius_server_clients;
srv.auth_port = conf->radius_server_auth_port;
srv.conf_ctx = conf;
srv.eap_sim_db_priv = hapd->eap_sim_db_priv;
srv.ssl_ctx = hapd->ssl_ctx;
srv.pac_opaque_encr_key = conf->pac_opaque_encr_key;
srv.eap_fast_a_id = conf->eap_fast_a_id;
srv.eap_fast_a_id_len = conf->eap_fast_a_id_len;
srv.eap_fast_a_id_info = conf->eap_fast_a_id_info;
srv.eap_fast_prov = conf->eap_fast_prov;
srv.pac_key_lifetime = conf->pac_key_lifetime;
srv.pac_key_refresh_time = conf->pac_key_refresh_time;
srv.eap_sim_aka_result_ind = conf->eap_sim_aka_result_ind;
srv.tnc = conf->tnc;
srv.ipv6 = conf->radius_server_ipv6;
srv.get_eap_user = hostapd_radius_get_eap_user;
hapd->radius_srv = radius_server_init(&srv);
if (hapd->radius_srv == NULL) {
printf("RADIUS server initialization failed.\n");
return -1;
}
return 0;
}
/**
* hostapd_setup_bss - Per-BSS setup (initialization)
* @hapd: Pointer to BSS data
* @first: Whether this BSS is the first BSS of an interface
*
* This function is used to initialize all per-BSS data structures and
* resources. This gets called in a loop for each BSS when an interface is
* initialized. Most of the modules that are initialized here will be
* deinitialized in hostapd_cleanup().
*/
static int hostapd_setup_bss(struct hostapd_data *hapd, int first)
{
struct hostapd_bss_config *conf = hapd->conf;
u8 ssid[HOSTAPD_MAX_SSID_LEN + 1];
int ssid_len, set_ssid;
if (!first) {
if (hostapd_mac_comp_empty(hapd->conf->bssid) == 0) {
/* Allocate the next available BSSID. */
do {
inc_byte_array(hapd->own_addr, ETH_ALEN);
} while (mac_in_conf(hapd->iconf, hapd->own_addr));
} else {
/* Allocate the configured BSSID. */
os_memcpy(hapd->own_addr, hapd->conf->bssid, ETH_ALEN);
if (hostapd_mac_comp(hapd->own_addr,
hapd->iface->bss[0]->own_addr) ==
0) {
printf("BSS '%s' may not have BSSID "
"set to the MAC address of the radio\n",
hapd->conf->iface);
return -1;
}
}
hapd->interface_added = 1;
if (hostapd_bss_add(hapd->iface->bss[0], hapd->conf->iface,
hapd->own_addr)) {
printf("Failed to add BSS (BSSID=" MACSTR ")\n",
MAC2STR(hapd->own_addr));
return -1;
}
}
/*
* Fetch the SSID from the system and use it or,
* if one was specified in the config file, verify they
* match.
*/
ssid_len = hostapd_get_ssid(hapd, ssid, sizeof(ssid));
if (ssid_len < 0) {
printf("Could not read SSID from system\n");
return -1;
}
if (conf->ssid.ssid_set) {
/*
* If SSID is specified in the config file and it differs
* from what is being used then force installation of the
* new SSID.
*/
set_ssid = (conf->ssid.ssid_len != (size_t) ssid_len ||
os_memcmp(conf->ssid.ssid, ssid, ssid_len) != 0);
} else {
/*
* No SSID in the config file; just use the one we got
* from the system.
*/
set_ssid = 0;
conf->ssid.ssid_len = ssid_len;
os_memcpy(conf->ssid.ssid, ssid, conf->ssid.ssid_len);
conf->ssid.ssid[conf->ssid.ssid_len] = '\0';
}
if (!hostapd_drv_none(hapd)) {
printf("Using interface %s with hwaddr " MACSTR
" and ssid '%s'\n",
hapd->conf->iface, MAC2STR(hapd->own_addr),
hapd->conf->ssid.ssid);
}
if (hostapd_setup_wpa_psk(conf)) {
printf("WPA-PSK setup failed.\n");
return -1;
}
/* Set flag for whether SSID is broadcast in beacons */
if (hostapd_set_broadcast_ssid(hapd,
!!hapd->conf->ignore_broadcast_ssid)) {
printf("Could not set broadcast SSID flag for kernel "
"driver\n");
return -1;
}
if (hostapd_set_dtim_period(hapd, hapd->conf->dtim_period)) {
printf("Could not set DTIM period for kernel driver\n");
return -1;
}
/* Set SSID for the kernel driver (to be used in beacon and probe
* response frames) */
if (set_ssid && hostapd_set_ssid(hapd, (u8 *) conf->ssid.ssid,
conf->ssid.ssid_len)) {
printf("Could not set SSID for kernel driver\n");
return -1;
}
if (wpa_debug_level == MSG_MSGDUMP)
conf->radius->msg_dumps = 1;
hapd->radius = radius_client_init(hapd, conf->radius);
if (hapd->radius == NULL) {
printf("RADIUS client initialization failed.\n");
return -1;
}
if (hostapd_acl_init(hapd)) {
printf("ACL initialization failed.\n");
return -1;
}
if (ieee802_1x_init(hapd)) {
printf("IEEE 802.1X initialization failed.\n");
return -1;
}
if (hapd->conf->wpa && hostapd_setup_wpa(hapd))
return -1;
if (accounting_init(hapd)) {
printf("Accounting initialization failed.\n");
return -1;
}
if (hapd->conf->ieee802_11f &&
(hapd->iapp = iapp_init(hapd, hapd->conf->iapp_iface)) == NULL) {
printf("IEEE 802.11F (IAPP) initialization failed.\n");
return -1;
}
if (hostapd_ctrl_iface_init(hapd)) {
printf("Failed to setup control interface\n");
return -1;
}
if (!hostapd_drv_none(hapd) && vlan_init(hapd)) {
printf("VLAN initialization failed.\n");
return -1;
}
#ifdef CONFIG_IEEE80211R
if (!hostapd_drv_none(hapd)) {
hapd->l2 = l2_packet_init(hapd->conf->iface, NULL, ETH_P_RRB,
hostapd_rrb_receive, hapd, 0);
if (hapd->l2 == NULL &&
(hapd->driver == NULL ||
hapd->driver->send_ether == NULL)) {
printf("Failed to open l2_packet interface\n");
return -1;
}
}
#endif /* CONFIG_IEEE80211R */
ieee802_11_set_beacon(hapd);
if (conf->radius_server_clients &&
hostapd_setup_radius_srv(hapd, conf))
return -1;
return 0;
}
static void hostapd_tx_queue_params(struct hostapd_iface *iface)
{
struct hostapd_data *hapd = iface->bss[0];
int i;
struct hostapd_tx_queue_params *p;
for (i = 0; i < NUM_TX_QUEUES; i++) {
p = &iface->conf->tx_queue[i];
if (!p->configured)
continue;
if (hostapd_set_tx_queue_params(hapd, i, p->aifs, p->cwmin,
p->cwmax, p->burst)) {
printf("Failed to set TX queue parameters for queue %d"
".\n", i);
/* Continue anyway */
}
}
}
/**
* setup_interface2 - Setup (initialize) an interface (part 2)
* @iface: Pointer to interface data.
* Returns: 0 on success; -1 on failure.
*
* Flushes old stations, sets the channel, DFS parameters, encryption,
* beacons, and WDS links based on the configuration.
*/
static int setup_interface2(struct hostapd_iface *iface)
{
struct hostapd_data *hapd = iface->bss[0];
int freq;
size_t j;
int ret = 0;
u8 *prev_addr;
hostapd_flush_old_stations(hapd);
hostapd_set_privacy(hapd, 0);
if (hapd->iconf->channel) {
freq = hostapd_hw_get_freq(hapd, hapd->iconf->channel);
printf("Mode: %s Channel: %d Frequency: %d MHz\n",
hostapd_hw_mode_txt(hapd->iconf->hw_mode),
hapd->iconf->channel, freq);
if (hostapd_set_freq(hapd, hapd->iconf->hw_mode, freq)) {
printf("Could not set channel for kernel driver\n");
return -1;
}
}
hostapd_broadcast_wep_clear(hapd);
if (hostapd_setup_encryption(hapd->conf->iface, hapd))
return -1;
hostapd_set_beacon_int(hapd, hapd->iconf->beacon_int);
ieee802_11_set_beacon(hapd);
if (hapd->iconf->rts_threshold > -1 &&
hostapd_set_rts(hapd, hapd->iconf->rts_threshold)) {
printf("Could not set RTS threshold for kernel driver\n");
return -1;
}
if (hapd->iconf->fragm_threshold > -1 &&
hostapd_set_frag(hapd, hapd->iconf->fragm_threshold)) {
printf("Could not set fragmentation threshold for kernel "
"driver\n");
return -1;
}
prev_addr = hapd->own_addr;
for (j = 0; j < iface->num_bss; j++) {
hapd = iface->bss[j];
if (j)
os_memcpy(hapd->own_addr, prev_addr, ETH_ALEN);
if (hostapd_setup_bss(hapd, j == 0))
return -1;
if (hostapd_mac_comp_empty(hapd->conf->bssid) == 0)
prev_addr = hapd->own_addr;
}
hostapd_tx_queue_params(iface);
ap_list_init(iface);
if (hostapd_driver_commit(hapd) < 0) {
wpa_printf(MSG_ERROR, "%s: Failed to commit driver "
"configuration", __func__);
return -1;
}
return ret;
}
static void setup_interface_start(void *eloop_data, void *user_ctx);
static void setup_interface2_handler(void *eloop_data, void *user_ctx);
/**
* setup_interface_finalize - Finish setup interface & call the callback
* @iface: Pointer to interface data.
* @status: Status of the setup interface (0 on success; -1 on failure).
* Returns: 0 on success; -1 on failure (e.g., was not in progress).
*/
static int setup_interface_finalize(struct hostapd_iface *iface, int status)
{
hostapd_iface_cb cb;
if (!iface->setup_cb)
return -1;
eloop_cancel_timeout(setup_interface_start, iface, NULL);
eloop_cancel_timeout(setup_interface2_handler, iface, NULL);
hostapd_select_hw_mode_stop(iface);
cb = iface->setup_cb;
iface->setup_cb = NULL;
cb(iface, status);
return 0;
}
/**
* setup_interface2_wrapper - Wrapper for setup_interface2()
* @iface: Pointer to interface data.
* @status: Status of the hw mode select.
*
* Wrapper for setup_interface2() to calls finalize function upon completion.
*/
static void setup_interface2_wrapper(struct hostapd_iface *iface, int status)
{
int ret = status;
if (ret)
printf("Could not select hw_mode and channel. (%d)\n", ret);
else
ret = setup_interface2(iface);
setup_interface_finalize(iface, ret);
}
/**
* setup_interface2_handler - Used for immediate call of setup_interface2
* @eloop_data: Stores the struct hostapd_iface * for the interface.
* @user_ctx: Unused.
*/
static void setup_interface2_handler(void *eloop_data, void *user_ctx)
{
struct hostapd_iface *iface = eloop_data;
setup_interface2_wrapper(iface, 0);
}
static int hostapd_radius_get_eap_user(void *ctx, const u8 *identity,
size_t identity_len, int phase2,
struct eap_user *user)
{
const struct hostapd_eap_user *eap_user;
int i, count;
eap_user = hostapd_get_eap_user(ctx, identity, identity_len, phase2);
if (eap_user == NULL)
return -1;
if (user == NULL)
return 0;
os_memset(user, 0, sizeof(*user));
count = EAP_USER_MAX_METHODS;
if (count > EAP_MAX_METHODS)
count = EAP_MAX_METHODS;
for (i = 0; i < count; i++) {
user->methods[i].vendor = eap_user->methods[i].vendor;
user->methods[i].method = eap_user->methods[i].method;
}
if (eap_user->password) {
user->password = os_malloc(eap_user->password_len);
if (user->password == NULL)
return -1;
os_memcpy(user->password, eap_user->password,
eap_user->password_len);
user->password_len = eap_user->password_len;
user->password_hash = eap_user->password_hash;
}
user->force_version = eap_user->force_version;
user->ttls_auth = eap_user->ttls_auth;
return 0;
}
/**
* setup_interface1 - Setup (initialize) an interface (part 1)
* @iface: Pointer to interface data
* Returns: 0 on success, -1 on failure
*
* Initializes the driver interface, validates the configuration,
* and sets driver parameters based on the configuration.
* Schedules setup_interface2() to be called immediately or after
* hardware mode setup takes place.
*/
static int setup_interface1(struct hostapd_iface *iface)
{
struct hostapd_data *hapd = iface->bss[0];
struct hostapd_bss_config *conf = hapd->conf;
size_t i;
char country[4];
u8 *b = conf->bssid;
/*
* Initialize the driver interface and make sure that all BSSes get
* configured with a pointer to this driver interface.
*/
if (b[0] | b[1] | b[2] | b[3] | b[4] | b[5]) {
hapd->drv_priv = hostapd_driver_init_bssid(hapd, b);
} else {
hapd->drv_priv = hostapd_driver_init(hapd);
}
if (hapd->drv_priv == NULL) {
printf("%s driver initialization failed.\n",
hapd->driver ? hapd->driver->name : "Unknown");
hapd->driver = NULL;
return -1;
}
for (i = 0; i < iface->num_bss; i++) {
iface->bss[i]->driver = hapd->driver;
iface->bss[i]->drv_priv = hapd->drv_priv;
}
if (hostapd_validate_bssid_configuration(iface))
return -1;
#ifdef CONFIG_IEEE80211N
SET_2BIT_LE16(&iface->ht_op_mode,
HT_INFO_OPERATION_MODE_OP_MODE_OFFSET,
OP_MODE_PURE);
#endif /* CONFIG_IEEE80211N */
os_memcpy(country, hapd->iconf->country, 3);
country[3] = '\0';
if (hostapd_set_country(hapd, country) < 0) {
printf("Failed to set country code\n");
return -1;
}
if (hapd->iconf->ieee80211d || hapd->iconf->ieee80211h) {
if (hostapd_set_ieee80211d(hapd, 1) < 0) {
printf("Failed to set ieee80211d (%d)\n",
hapd->iconf->ieee80211d);
return -1;
}
}
if (hapd->iconf->bridge_packets != INTERNAL_BRIDGE_DO_NOT_CONTROL &&
hostapd_set_internal_bridge(hapd, hapd->iconf->bridge_packets)) {
printf("Failed to set bridge_packets for kernel driver\n");
return -1;
}
/* TODO: merge with hostapd_driver_init() ? */
if (hostapd_wireless_event_init(hapd) < 0)
return -1;
if (hostapd_get_hw_features(iface)) {
/* Not all drivers support this yet, so continue without hw
* feature data. */
} else {
return hostapd_select_hw_mode_start(iface,
setup_interface2_wrapper);
}
eloop_register_timeout(0, 0, setup_interface2_handler, iface, NULL);
return 0;
}
/**
* setup_interface_start - Handler to start setup interface
* @eloop_data: Stores the struct hostapd_iface * for the interface.
* @user_ctx: Unused.
*
* An eloop handler is used so that all errors can be processed by the
* callback without introducing stack recursion.
*/
static void setup_interface_start(void *eloop_data, void *user_ctx)
{
struct hostapd_iface *iface = eloop_data;
int ret;
ret = setup_interface1(iface);
if (ret)
setup_interface_finalize(iface, ret);
}
/**
* hostapd_setup_interface_start - Start the setup of an interface
* @iface: Pointer to interface data.
* @cb: The function to callback when done.
* Returns: 0 if it starts successfully; cb will be called when done.
* -1 on failure; cb will not be called.
*
* Initializes the driver interface, validates the configuration,
* and sets driver parameters based on the configuration.
* Flushes old stations, sets the channel, DFS parameters, encryption,
* beacons, and WDS links based on the configuration.
*/
int hostapd_setup_interface_start(struct hostapd_iface *iface,
hostapd_iface_cb cb)
{
if (iface->setup_cb) {
wpa_printf(MSG_DEBUG,
"%s: Interface setup already in progress.\n",
iface->bss[0]->conf->iface);
return -1;
}
iface->setup_cb = cb;
eloop_register_timeout(0, 0, setup_interface_start, iface, NULL);
return 0;
}
/**
* hostapd_setup_interace_stop - Stops the setup of an interface
* @iface: Pointer to interface data
* Returns: 0 if successfully stopped;
* -1 on failure (i.e., was not in progress)
*/
int hostapd_setup_interface_stop(struct hostapd_iface *iface)
{
return setup_interface_finalize(iface, -1);
}
static void show_version(void)
{
fprintf(stderr,
"hostapd v" VERSION_STR "\n"
"User space daemon for IEEE 802.11 AP management,\n"
"IEEE 802.1X/WPA/WPA2/EAP/RADIUS Authenticator\n"
"Copyright (c) 2002-2008, Jouni Malinen <j@w1.fi> "
"and contributors\n");
}
static void usage(void)
{
show_version();
fprintf(stderr,
"\n"
"usage: hostapd [-hdBKtv] [-P <PID file>] "
"<configuration file(s)>\n"
"\n"
"options:\n"
" -h show this usage\n"
" -d show more debug messages (-dd for even more)\n"
" -B run daemon in the background\n"
" -P PID file\n"
" -K include key data in debug messages\n"
" -t include timestamps in some debug messages\n"
" -v show hostapd version\n");
exit(1);
}
/**
* hostapd_alloc_bss_data - Allocate and initialize per-BSS data
* @hapd_iface: Pointer to interface data
* @conf: Pointer to per-interface configuration
* @bss: Pointer to per-BSS configuration for this BSS
* Returns: Pointer to allocated BSS data
*
* This function is used to allocate per-BSS data structure. This data will be
* freed after hostapd_cleanup() is called for it during interface
* deinitialization.
*/
static struct hostapd_data *
hostapd_alloc_bss_data(struct hostapd_iface *hapd_iface,
struct hostapd_config *conf,
struct hostapd_bss_config *bss)
{
struct hostapd_data *hapd;
hapd = os_zalloc(sizeof(*hapd));
if (hapd == NULL)
return NULL;
hapd->iconf = conf;
hapd->conf = bss;
hapd->iface = hapd_iface;
if (hapd->conf->individual_wep_key_len > 0) {
/* use key0 in individual key and key1 in broadcast key */
hapd->default_wep_key_idx = 1;
}
#ifdef EAP_TLS_FUNCS
if (hapd->conf->eap_server &&
(hapd->conf->ca_cert || hapd->conf->server_cert ||
hapd->conf->dh_file)) {
struct tls_connection_params params;
hapd->ssl_ctx = tls_init(NULL);
if (hapd->ssl_ctx == NULL) {
printf("Failed to initialize TLS\n");
goto fail;
}
os_memset(&params, 0, sizeof(params));
params.ca_cert = hapd->conf->ca_cert;
params.client_cert = hapd->conf->server_cert;
params.private_key = hapd->conf->private_key;
params.private_key_passwd = hapd->conf->private_key_passwd;
params.dh_file = hapd->conf->dh_file;
if (tls_global_set_params(hapd->ssl_ctx, &params)) {
printf("Failed to set TLS parameters\n");
goto fail;
}
if (tls_global_set_verify(hapd->ssl_ctx,
hapd->conf->check_crl)) {
printf("Failed to enable check_crl\n");
goto fail;
}
}
#endif /* EAP_TLS_FUNCS */
#ifdef EAP_SERVER
if (hapd->conf->eap_sim_db) {
hapd->eap_sim_db_priv =
eap_sim_db_init(hapd->conf->eap_sim_db,
hostapd_sim_db_cb, hapd);
if (hapd->eap_sim_db_priv == NULL) {
printf("Failed to initialize EAP-SIM database "
"interface\n");
goto fail;
}
}
#endif /* EAP_SERVER */
if (hapd->conf->assoc_ap)
hapd->assoc_ap_state = WAIT_BEACON;
hapd->driver = hapd->iconf->driver;
return hapd;
#if defined(EAP_TLS_FUNCS) || defined(EAP_SERVER)
fail:
#endif
/* TODO: cleanup allocated resources(?) */
os_free(hapd);
return NULL;
}
/**
* hostapd_init - Allocate and initialize per-interface data
* @config_file: Path to the configuration file
* Returns: Pointer to the allocated interface data or %NULL on failure
*
* This function is used to allocate main data structures for per-interface
* data. The allocated data buffer will be freed by calling
* hostapd_cleanup_iface().
*/
static struct hostapd_iface * hostapd_init(const char *config_file)
{
struct hostapd_iface *hapd_iface = NULL;
struct hostapd_config *conf = NULL;
struct hostapd_data *hapd;
size_t i;
hapd_iface = os_zalloc(sizeof(*hapd_iface));
if (hapd_iface == NULL)
goto fail;
hapd_iface->config_fname = os_strdup(config_file);
if (hapd_iface->config_fname == NULL)
goto fail;
conf = hostapd_config_read(hapd_iface->config_fname);
if (conf == NULL)
goto fail;
hapd_iface->conf = conf;
hapd_iface->num_bss = conf->num_bss;
hapd_iface->bss = os_zalloc(conf->num_bss *
sizeof(struct hostapd_data *));
if (hapd_iface->bss == NULL)
goto fail;
for (i = 0; i < conf->num_bss; i++) {
hapd = hapd_iface->bss[i] =
hostapd_alloc_bss_data(hapd_iface, conf,
&conf->bss[i]);
if (hapd == NULL)
goto fail;
}
return hapd_iface;
fail:
if (conf)
hostapd_config_free(conf);
if (hapd_iface) {
for (i = 0; hapd_iface->bss && i < hapd_iface->num_bss; i++) {
hapd = hapd_iface->bss[i];
if (hapd && hapd->ssl_ctx)
tls_deinit(hapd->ssl_ctx);
}
os_free(hapd_iface->config_fname);
os_free(hapd_iface->bss);
os_free(hapd_iface);
}
return NULL;
}
/**
* register_drivers - Register driver interfaces
*
* This function is generated by Makefile (into driver_conf.c) to call all
* configured driver interfaces to register them to core hostapd.
*/
void register_drivers(void);
/**
* setup_interface_done - Callback when an interface is done being setup.
* @iface: Pointer to interface data.
* @status: Status of the interface setup (0 on success; -1 on failure).
*/
static void setup_interface_done(struct hostapd_iface *iface, int status)
{
if (status) {
wpa_printf(MSG_DEBUG, "%s: Unable to setup interface.",
iface->bss[0]->conf->iface);
eloop_terminate();
} else if (!hostapd_drv_none(iface->bss[0]))
wpa_printf(MSG_DEBUG, "%s: Setup of interface done.",
iface->bss[0]->conf->iface);
}
int main(int argc, char *argv[])
{
struct hapd_interfaces interfaces;
int ret = 1, k;
size_t i, j;
int c, debug = 0, daemonize = 0, tnc = 0;
const char *pid_file = NULL;
hostapd_logger_register_cb(hostapd_logger_cb);
for (;;) {
c = getopt(argc, argv, "BdhKP:tv");
if (c < 0)
break;
switch (c) {
case 'h':
usage();
break;
case 'd':
debug++;
if (wpa_debug_level > 0)
wpa_debug_level--;
break;
case 'B':
daemonize++;
break;
case 'K':
wpa_debug_show_keys++;
break;
case 'P':
pid_file = optarg;
break;
case 't':
wpa_debug_timestamp++;
break;
case 'v':
show_version();
exit(1);
break;
default:
usage();
break;
}
}
if (optind == argc)
usage();
if (eap_server_register_methods()) {
wpa_printf(MSG_ERROR, "Failed to register EAP methods");
return -1;
}
interfaces.count = argc - optind;
interfaces.iface = os_malloc(interfaces.count *
sizeof(struct hostapd_iface *));
if (interfaces.iface == NULL) {
wpa_printf(MSG_ERROR, "malloc failed\n");
return -1;
}
if (eloop_init(&interfaces)) {
wpa_printf(MSG_ERROR, "Failed to initialize event loop");
return -1;
}
#ifndef CONFIG_NATIVE_WINDOWS
eloop_register_signal(SIGHUP, handle_reload, NULL);
eloop_register_signal(SIGUSR1, handle_dump_state, NULL);
#endif /* CONFIG_NATIVE_WINDOWS */
eloop_register_signal_terminate(handle_term, NULL);
/* Initialize interfaces */
for (i = 0; i < interfaces.count; i++) {
printf("Configuration file: %s\n", argv[optind + i]);
interfaces.iface[i] = hostapd_init(argv[optind + i]);
if (!interfaces.iface[i])
goto out;
for (k = 0; k < debug; k++) {
if (interfaces.iface[i]->bss[0]->conf->
logger_stdout_level > 0)
interfaces.iface[i]->bss[0]->conf->
logger_stdout_level--;
}
ret = hostapd_setup_interface_start(interfaces.iface[i],
setup_interface_done);
if (ret)
goto out;
for (k = 0; k < (int) interfaces.iface[i]->num_bss; k++) {
if (interfaces.iface[i]->bss[0]->conf->tnc)
tnc++;
}
}
#ifdef EAP_TNC
if (tnc && tncs_global_init() < 0) {
wpa_printf(MSG_ERROR, "Failed to initialize TNCS");
goto out;
}
#endif /* EAP_TNC */
if (daemonize && os_daemonize(pid_file)) {
perror("daemon");
goto out;
}
#ifndef CONFIG_NATIVE_WINDOWS
openlog("hostapd", 0, LOG_DAEMON);
#endif /* CONFIG_NATIVE_WINDOWS */
eloop_run();
/* Disconnect associated stations from all interfaces and BSSes */
for (i = 0; i < interfaces.count; i++) {
for (j = 0; j < interfaces.iface[i]->num_bss; j++) {
struct hostapd_data *hapd =
interfaces.iface[i]->bss[j];
hostapd_free_stas(hapd);
hostapd_flush_old_stations(hapd);
}
}
ret = 0;
out:
/* Deinitialize all interfaces */
for (i = 0; i < interfaces.count; i++) {
if (!interfaces.iface[i])
continue;
hostapd_setup_interface_stop(interfaces.iface[i]);
hostapd_cleanup_iface_pre(interfaces.iface[i]);
for (j = 0; j < interfaces.iface[i]->num_bss; j++) {
struct hostapd_data *hapd =
interfaces.iface[i]->bss[j];
hostapd_cleanup(hapd);
if (j == interfaces.iface[i]->num_bss - 1 &&
hapd->driver)
hostapd_driver_deinit(hapd);
}
for (j = 0; j < interfaces.iface[i]->num_bss; j++)
os_free(interfaces.iface[i]->bss[j]);
hostapd_cleanup_iface(interfaces.iface[i]);
}
os_free(interfaces.iface);
#ifdef EAP_TNC
tncs_global_deinit();
#endif /* EAP_TNC */
eloop_destroy();
#ifndef CONFIG_NATIVE_WINDOWS
closelog();
#endif /* CONFIG_NATIVE_WINDOWS */
eap_server_unregister_methods();
os_daemonize_terminate(pid_file);
return ret;
}
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