/*
* hostapd / main()
* Copyright (c) 2002-2015, 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"
#ifndef CONFIG_NATIVE_WINDOWS
#include <syslog.h>
#include <grp.h>
#endif /* CONFIG_NATIVE_WINDOWS */
#include "utils/common.h"
#include "utils/eloop.h"
#include "utils/uuid.h"
#include "crypto/random.h"
#include "crypto/tls.h"
#include "common/version.h"
#include "drivers/driver.h"
#include "eap_server/eap.h"
#include "eap_server/tncs.h"
#include "ap/hostapd.h"
#include "ap/ap_config.h"
#include "ap/ap_drv_ops.h"
#include "config_file.h"
#include "eap_register.h"
#include "ctrl_iface.h"
struct hapd_global {
void **drv_priv;
size_t drv_count;
};
static struct hapd_global global;
#ifndef CONFIG_NO_HOSTAPD_LOGGER
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 ? module_str : "",
txt);
else if (hapd && hapd->conf)
os_snprintf(format, maxlen, "%s:%s%s %s",
hapd->conf->iface, module_str ? " " : "",
module_str ? module_str : "", txt);
else if (addr)
os_snprintf(format, maxlen, "STA " MACSTR "%s%s: %s",
MAC2STR(addr), module_str ? " " : "",
module_str ? module_str : "", txt);
else
os_snprintf(format, maxlen, "%s%s%s",
module_str ? module_str : "",
module_str ? ": " : "", txt);
if ((conf_stdout & module) && level >= conf_stdout_level) {
wpa_debug_print_timestamp();
wpa_printf(MSG_INFO, "%s", 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);
}
#endif /* CONFIG_NO_HOSTAPD_LOGGER */
/**
* hostapd_driver_init - Preparate driver interface
*/
static int hostapd_driver_init(struct hostapd_iface *iface)
{
struct wpa_init_params params;
size_t i;
struct hostapd_data *hapd = iface->bss[0];
struct hostapd_bss_config *conf = hapd->conf;
u8 *b = conf->bssid;
struct wpa_driver_capa capa;
if (hapd->driver == NULL || hapd->driver->hapd_init == NULL) {
wpa_printf(MSG_ERROR, "No hostapd driver wrapper available");
return -1;
}
/* Initialize the driver interface */
if (!(b[0] | b[1] | b[2] | b[3] | b[4] | b[5]))
b = NULL;
os_memset(¶ms, 0, sizeof(params));
for (i = 0; wpa_drivers[i]; i++) {
if (wpa_drivers[i] != hapd->driver)
continue;
if (global.drv_priv[i] == NULL &&
wpa_drivers[i]->global_init) {
global.drv_priv[i] = wpa_drivers[i]->global_init();
if (global.drv_priv[i] == NULL) {
wpa_printf(MSG_ERROR, "Failed to initialize "
"driver '%s'",
wpa_drivers[i]->name);
return -1;
}
}
params.global_priv = global.drv_priv[i];
break;
}
params.bssid = b;
params.ifname = hapd->conf->iface;
params.driver_params = hapd->iconf->driver_params;
params.use_pae_group_addr = hapd->conf->use_pae_group_addr;
params.num_bridge = hapd->iface->num_bss;
params.bridge = os_calloc(hapd->iface->num_bss, sizeof(char *));
if (params.bridge == NULL)
return -1;
for (i = 0; i < hapd->iface->num_bss; i++) {
struct hostapd_data *bss = hapd->iface->bss[i];
if (bss->conf->bridge[0])
params.bridge[i] = bss->conf->bridge;
}
params.own_addr = hapd->own_addr;
hapd->drv_priv = hapd->driver->hapd_init(hapd, ¶ms);
os_free(params.bridge);
if (hapd->drv_priv == NULL) {
wpa_printf(MSG_ERROR, "%s driver initialization failed.",
hapd->driver->name);
hapd->driver = NULL;
return -1;
}
if (hapd->driver->get_capa &&
hapd->driver->get_capa(hapd->drv_priv, &capa) == 0) {
struct wowlan_triggers *triggs;
iface->drv_flags = capa.flags;
iface->smps_modes = capa.smps_modes;
iface->probe_resp_offloads = capa.probe_resp_offloads;
iface->extended_capa = capa.extended_capa;
iface->extended_capa_mask = capa.extended_capa_mask;
iface->extended_capa_len = capa.extended_capa_len;
iface->drv_max_acl_mac_addrs = capa.max_acl_mac_addrs;
triggs = wpa_get_wowlan_triggers(conf->wowlan_triggers, &capa);
if (triggs && hapd->driver->set_wowlan) {
if (hapd->driver->set_wowlan(hapd->drv_priv, triggs))
wpa_printf(MSG_ERROR, "set_wowlan failed");
}
os_free(triggs);
}
return 0;
}
/**
* hostapd_interface_init - Read configuration file and init BSS data
*
* This function is used to parse configuration file for a full interface (one
* or more BSSes sharing the same radio) and allocate memory for the BSS
* interfaces. No actiual driver operations are started.
*/
static struct hostapd_iface *
hostapd_interface_init(struct hapd_interfaces *interfaces,
const char *config_fname, int debug)
{
struct hostapd_iface *iface;
int k;
wpa_printf(MSG_ERROR, "Configuration file: %s", config_fname);
iface = hostapd_init(interfaces, config_fname);
if (!iface)
return NULL;
iface->interfaces = interfaces;
for (k = 0; k < debug; k++) {
if (iface->bss[0]->conf->logger_stdout_level > 0)
iface->bss[0]->conf->logger_stdout_level--;
}
if (iface->conf->bss[0]->iface[0] == '\0' &&
!hostapd_drv_none(iface->bss[0])) {
wpa_printf(MSG_ERROR, "Interface name not specified in %s",
config_fname);
hostapd_interface_deinit_free(iface);
return NULL;
}
return iface;
}
/**
* handle_term - SIGINT and SIGTERM handler to terminate hostapd process
*/
static void handle_term(int sig, void *signal_ctx)
{
wpa_printf(MSG_DEBUG, "Signal %d received - terminating", sig);
eloop_terminate();
}
#ifndef CONFIG_NATIVE_WINDOWS
static int handle_reload_iface(struct hostapd_iface *iface, void *ctx)
{
if (hostapd_reload_config(iface) < 0) {
wpa_printf(MSG_WARNING, "Failed to read new configuration "
"file - continuing with old.");
}
return 0;
}
/**
* handle_reload - SIGHUP handler to reload configuration
*/
static void handle_reload(int sig, void *signal_ctx)
{
struct hapd_interfaces *interfaces = signal_ctx;
wpa_printf(MSG_DEBUG, "Signal %d received - reloading configuration",
sig);
hostapd_for_each_interface(interfaces, handle_reload_iface, NULL);
}
static void handle_dump_state(int sig, void *signal_ctx)
{
/* Not used anymore - ignore signal */
}
#endif /* CONFIG_NATIVE_WINDOWS */
static int hostapd_global_init(struct hapd_interfaces *interfaces,
const char *entropy_file)
{
int i;
os_memset(&global, 0, sizeof(global));
hostapd_logger_register_cb(hostapd_logger_cb);
if (eap_server_register_methods()) {
wpa_printf(MSG_ERROR, "Failed to register EAP methods");
return -1;
}
if (eloop_init()) {
wpa_printf(MSG_ERROR, "Failed to initialize event loop");
return -1;
}
random_init(entropy_file);
#ifndef CONFIG_NATIVE_WINDOWS
eloop_register_signal(SIGHUP, handle_reload, interfaces);
eloop_register_signal(SIGUSR1, handle_dump_state, interfaces);
#endif /* CONFIG_NATIVE_WINDOWS */
eloop_register_signal_terminate(handle_term, interfaces);
#ifndef CONFIG_NATIVE_WINDOWS
openlog("hostapd", 0, LOG_DAEMON);
#endif /* CONFIG_NATIVE_WINDOWS */
for (i = 0; wpa_drivers[i]; i++)
global.drv_count++;
if (global.drv_count == 0) {
wpa_printf(MSG_ERROR, "No drivers enabled");
return -1;
}
global.drv_priv = os_calloc(global.drv_count, sizeof(void *));
if (global.drv_priv == NULL)
return -1;
return 0;
}
static void hostapd_global_deinit(const char *pid_file)
{
int i;
for (i = 0; wpa_drivers[i] && global.drv_priv; i++) {
if (!global.drv_priv[i])
continue;
wpa_drivers[i]->global_deinit(global.drv_priv[i]);
}
os_free(global.drv_priv);
global.drv_priv = NULL;
#ifdef EAP_SERVER_TNC
tncs_global_deinit();
#endif /* EAP_SERVER_TNC */
random_deinit();
eloop_destroy();
#ifndef CONFIG_NATIVE_WINDOWS
closelog();
#endif /* CONFIG_NATIVE_WINDOWS */
eap_server_unregister_methods();
os_daemonize_terminate(pid_file);
}
static int hostapd_global_run(struct hapd_interfaces *ifaces, int daemonize,
const char *pid_file)
{
#ifdef EAP_SERVER_TNC
int tnc = 0;
size_t i, k;
for (i = 0; !tnc && i < ifaces->count; i++) {
for (k = 0; k < ifaces->iface[i]->num_bss; k++) {
if (ifaces->iface[i]->bss[0]->conf->tnc) {
tnc++;
break;
}
}
}
if (tnc && tncs_global_init() < 0) {
wpa_printf(MSG_ERROR, "Failed to initialize TNCS");
return -1;
}
#endif /* EAP_SERVER_TNC */
if (daemonize && os_daemonize(pid_file)) {
wpa_printf(MSG_ERROR, "daemon: %s", strerror(errno));
return -1;
}
eloop_run();
return 0;
}
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) 2002-2015, Jouni Malinen <j@w1.fi> "
"and contributors\n");
}
static void usage(void)
{
show_version();
fprintf(stderr,
"\n"
"usage: hostapd [-hdBKtv] [-P <PID file>] [-e <entropy file>] "
"\\\n"
" [-g <global ctrl_iface>] [-G <group>] \\\n"
" <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"
" -e entropy file\n"
" -g global control interface path\n"
" -G group for control interfaces\n"
" -P PID file\n"
" -K include key data in debug messages\n"
#ifdef CONFIG_DEBUG_FILE
" -f log output to debug file instead of stdout\n"
#endif /* CONFIG_DEBUG_FILE */
#ifdef CONFIG_DEBUG_LINUX_TRACING
" -T = record to Linux tracing in addition to logging\n"
" (records all messages regardless of debug verbosity)\n"
#endif /* CONFIG_DEBUG_LINUX_TRACING */
" -t include timestamps in some debug messages\n"
" -v show hostapd version\n");
exit(1);
}
static const char * hostapd_msg_ifname_cb(void *ctx)
{
struct hostapd_data *hapd = ctx;
if (hapd && hapd->iconf && hapd->iconf->bss &&
hapd->iconf->num_bss > 0 && hapd->iconf->bss[0])
return hapd->iconf->bss[0]->iface;
return NULL;
}
static int hostapd_get_global_ctrl_iface(struct hapd_interfaces *interfaces,
const char *path)
{
char *pos;
os_free(interfaces->global_iface_path);
interfaces->global_iface_path = os_strdup(path);
if (interfaces->global_iface_path == NULL)
return -1;
pos = os_strrchr(interfaces->global_iface_path, '/');
if (pos == NULL) {
wpa_printf(MSG_ERROR, "No '/' in the global control interface "
"file");
os_free(interfaces->global_iface_path);
interfaces->global_iface_path = NULL;
return -1;
}
*pos = '\0';
interfaces->global_iface_name = pos + 1;
return 0;
}
static int hostapd_get_ctrl_iface_group(struct hapd_interfaces *interfaces,
const char *group)
{
#ifndef CONFIG_NATIVE_WINDOWS
struct group *grp;
grp = getgrnam(group);
if (grp == NULL) {
wpa_printf(MSG_ERROR, "Unknown group '%s'", group);
return -1;
}
interfaces->ctrl_iface_group = grp->gr_gid;
#endif /* CONFIG_NATIVE_WINDOWS */
return 0;
}
#ifdef CONFIG_WPS
static int gen_uuid(const char *txt_addr)
{
u8 addr[ETH_ALEN];
u8 uuid[UUID_LEN];
char buf[100];
if (hwaddr_aton(txt_addr, addr) < 0)
return -1;
uuid_gen_mac_addr(addr, uuid);
if (uuid_bin2str(uuid, buf, sizeof(buf)) < 0)
return -1;
printf("%s\n", buf);
return 0;
}
#endif /* CONFIG_WPS */
int main(int argc, char *argv[])
{
struct hapd_interfaces interfaces;
int ret = 1;
size_t i, j;
int c, debug = 0, daemonize = 0;
char *pid_file = NULL;
const char *log_file = NULL;
const char *entropy_file = NULL;
char **bss_config = NULL, **tmp_bss;
size_t num_bss_configs = 0;
#ifdef CONFIG_DEBUG_LINUX_TRACING
int enable_trace_dbg = 0;
#endif /* CONFIG_DEBUG_LINUX_TRACING */
if (os_program_init())
return -1;
os_memset(&interfaces, 0, sizeof(interfaces));
interfaces.reload_config = hostapd_reload_config;
interfaces.config_read_cb = hostapd_config_read;
interfaces.for_each_interface = hostapd_for_each_interface;
interfaces.ctrl_iface_init = hostapd_ctrl_iface_init;
interfaces.ctrl_iface_deinit = hostapd_ctrl_iface_deinit;
interfaces.driver_init = hostapd_driver_init;
interfaces.global_iface_path = NULL;
interfaces.global_iface_name = NULL;
interfaces.global_ctrl_sock = -1;
interfaces.global_ctrl_dst = NULL;
for (;;) {
c = getopt(argc, argv, "b:Bde:f:hKP:Ttu:vg:G:");
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 'e':
entropy_file = optarg;
break;
case 'f':
log_file = optarg;
break;
case 'K':
wpa_debug_show_keys++;
break;
case 'P':
os_free(pid_file);
pid_file = os_rel2abs_path(optarg);
break;
case 't':
wpa_debug_timestamp++;
break;
#ifdef CONFIG_DEBUG_LINUX_TRACING
case 'T':
enable_trace_dbg = 1;
break;
#endif /* CONFIG_DEBUG_LINUX_TRACING */
case 'v':
show_version();
exit(1);
break;
case 'g':
if (hostapd_get_global_ctrl_iface(&interfaces, optarg))
return -1;
break;
case 'G':
if (hostapd_get_ctrl_iface_group(&interfaces, optarg))
return -1;
break;
case 'b':
tmp_bss = os_realloc_array(bss_config,
num_bss_configs + 1,
sizeof(char *));
if (tmp_bss == NULL)
goto out;
bss_config = tmp_bss;
bss_config[num_bss_configs++] = optarg;
break;
#ifdef CONFIG_WPS
case 'u':
return gen_uuid(optarg);
#endif /* CONFIG_WPS */
default:
usage();
break;
}
}
if (optind == argc && interfaces.global_iface_path == NULL &&
num_bss_configs == 0)
usage();
wpa_msg_register_ifname_cb(hostapd_msg_ifname_cb);
if (log_file)
wpa_debug_open_file(log_file);
else
wpa_debug_setup_stdout();
#ifdef CONFIG_DEBUG_LINUX_TRACING
if (enable_trace_dbg) {
int tret = wpa_debug_open_linux_tracing();
if (tret) {
wpa_printf(MSG_ERROR, "Failed to enable trace logging");
return -1;
}
}
#endif /* CONFIG_DEBUG_LINUX_TRACING */
interfaces.count = argc - optind;
if (interfaces.count || num_bss_configs) {
interfaces.iface = os_calloc(interfaces.count + num_bss_configs,
sizeof(struct hostapd_iface *));
if (interfaces.iface == NULL) {
wpa_printf(MSG_ERROR, "malloc failed");
return -1;
}
}
if (hostapd_global_init(&interfaces, entropy_file)) {
wpa_printf(MSG_ERROR, "Failed to initialize global context");
return -1;
}
/* Allocate and parse configuration for full interface files */
for (i = 0; i < interfaces.count; i++) {
interfaces.iface[i] = hostapd_interface_init(&interfaces,
argv[optind + i],
debug);
if (!interfaces.iface[i]) {
wpa_printf(MSG_ERROR, "Failed to initialize interface");
goto out;
}
}
/* Allocate and parse configuration for per-BSS files */
for (i = 0; i < num_bss_configs; i++) {
struct hostapd_iface *iface;
char *fname;
wpa_printf(MSG_INFO, "BSS config: %s", bss_config[i]);
fname = os_strchr(bss_config[i], ':');
if (fname == NULL) {
wpa_printf(MSG_ERROR,
"Invalid BSS config identifier '%s'",
bss_config[i]);
goto out;
}
*fname++ = '\0';
iface = hostapd_interface_init_bss(&interfaces, bss_config[i],
fname, debug);
if (iface == NULL)
goto out;
for (j = 0; j < interfaces.count; j++) {
if (interfaces.iface[j] == iface)
break;
}
if (j == interfaces.count) {
struct hostapd_iface **tmp;
tmp = os_realloc_array(interfaces.iface,
interfaces.count + 1,
sizeof(struct hostapd_iface *));
if (tmp == NULL) {
hostapd_interface_deinit_free(iface);
goto out;
}
interfaces.iface = tmp;
interfaces.iface[interfaces.count++] = iface;
}
}
/*
* Enable configured interfaces. Depending on channel configuration,
* this may complete full initialization before returning or use a
* callback mechanism to complete setup in case of operations like HT
* co-ex scans, ACS, or DFS are needed to determine channel parameters.
* In such case, the interface will be enabled from eloop context within
* hostapd_global_run().
*/
interfaces.terminate_on_error = interfaces.count;
for (i = 0; i < interfaces.count; i++) {
if (hostapd_driver_init(interfaces.iface[i]) ||
hostapd_setup_interface(interfaces.iface[i]))
goto out;
}
hostapd_global_ctrl_iface_init(&interfaces);
if (hostapd_global_run(&interfaces, daemonize, pid_file)) {
wpa_printf(MSG_ERROR, "Failed to start eloop");
goto out;
}
ret = 0;
out:
hostapd_global_ctrl_iface_deinit(&interfaces);
/* Deinitialize all interfaces */
for (i = 0; i < interfaces.count; i++) {
if (!interfaces.iface[i])
continue;
interfaces.iface[i]->driver_ap_teardown =
!!(interfaces.iface[i]->drv_flags &
WPA_DRIVER_FLAGS_AP_TEARDOWN_SUPPORT);
hostapd_interface_deinit_free(interfaces.iface[i]);
}
os_free(interfaces.iface);
hostapd_global_deinit(pid_file);
os_free(pid_file);
if (log_file)
wpa_debug_close_file();
wpa_debug_close_linux_tracing();
os_free(bss_config);
os_program_deinit();
return ret;
}