wpa_supplicant: Initial Revision 0.8.X

Based on:
commit 0725cc7b7efc434910e89865c42eda7ce61bbf08
Author: Jouni Malinen <j@w1.fi>
Date:   Thu Apr 21 20:41:01 2011 +0300

    Enable CONFIG_DRIVER_NL80211=y in the default configuration

    nl80211 should be preferred over WEXT with any recent Linux
    kernel version.

Change-Id: I26aec5afbbd4f4a1f5fd900912545b6f5050de64
Signed-off-by: Dmitry Shmidt <dimitrysh@google.com>

1 files changed, 599 insertions, 0 deletions

diff --git a/hostapd/main.c b/hostapd/main.c
new file mode 100644
index 00000000..7a4cfb00
--- /dev/null
+++ b/hostapd/main.c
@@ -0,0 +1,599 @@
+/*
+ * hostapd / main()
+ * Copyright (c) 2002-2011, Jouni Malinen <j@w1.fi>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ * Alternatively, this software may be distributed under the terms of BSD
+ * license.
+ *
+ * See README and COPYING for more details.
+ */
+
+#include "utils/includes.h"
+#ifndef CONFIG_NATIVE_WINDOWS
+#include <syslog.h>
+#endif /* CONFIG_NATIVE_WINDOWS */
+
+#include "utils/common.h"
+#include "utils/eloop.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 "config_file.h"
+#include "eap_register.h"
+#include "dump_state.h"
+#include "ctrl_iface.h"
+
+
+extern int wpa_debug_level;
+extern int wpa_debug_show_keys;
+extern int wpa_debug_timestamp;
+
+
+struct hapd_interfaces {
+	size_t count;
+	struct hostapd_iface **iface;
+};
+
+
+static int hostapd_for_each_interface(struct hapd_interfaces *interfaces,
+				      int (*cb)(struct hostapd_iface *iface,
+						void *ctx), void *ctx)
+{
+	size_t i;
+	int ret;
+
+	for (i = 0; i < interfaces->count; i++) {
+		ret = cb(interfaces->iface[i], ctx);
+		if (ret)
+			return ret;
+	}
+
+	return 0;
+}
+
+
+#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, 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);
+}
+#endif /* CONFIG_NO_HOSTAPD_LOGGER */
+
+
+/**
+ * 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->reload_config = hostapd_reload_config;
+	hapd_iface->config_read_cb = hostapd_config_read;
+	hapd_iface->config_fname = os_strdup(config_file);
+	if (hapd_iface->config_fname == NULL)
+		goto fail;
+	hapd_iface->ctrl_iface_init = hostapd_ctrl_iface_init;
+	hapd_iface->ctrl_iface_deinit = hostapd_ctrl_iface_deinit;
+	hapd_iface->for_each_interface = hostapd_for_each_interface;
+
+	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;
+		hapd->msg_ctx = hapd;
+	}
+
+	return hapd_iface;
+
+fail:
+	if (conf)
+		hostapd_config_free(conf);
+	if (hapd_iface) {
+		os_free(hapd_iface->config_fname);
+		os_free(hapd_iface->bss);
+		os_free(hapd_iface);
+	}
+	return NULL;
+}
+
+
+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(&params, 0, sizeof(params));
+	params.bssid = b;
+	params.ifname = hapd->conf->iface;
+	params.ssid = (const u8 *) hapd->conf->ssid.ssid;
+	params.ssid_len = hapd->conf->ssid.ssid_len;
+	params.test_socket = hapd->conf->test_socket;
+	params.use_pae_group_addr = hapd->conf->use_pae_group_addr;
+
+	params.num_bridge = hapd->iface->num_bss;
+	params.bridge = os_zalloc(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, &params);
+	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)
+		iface->drv_flags = capa.flags;
+
+	return 0;
+}
+
+
+static void hostapd_interface_deinit_free(struct hostapd_iface *iface)
+{
+	const struct wpa_driver_ops *driver;
+	void *drv_priv;
+	if (iface == NULL)
+		return;
+	driver = iface->bss[0]->driver;
+	drv_priv = iface->bss[0]->drv_priv;
+	hostapd_interface_deinit(iface);
+	if (driver && driver->hapd_deinit)
+		driver->hapd_deinit(drv_priv);
+	hostapd_interface_free(iface);
+}
+
+
+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(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 (hostapd_driver_init(iface) ||
+	    hostapd_setup_interface(iface)) {
+		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)
+{
+#ifdef HOSTAPD_DUMP_STATE
+	struct hapd_interfaces *interfaces = signal_ctx;
+	hostapd_for_each_interface(interfaces, handle_dump_state_iface, NULL);
+#endif /* HOSTAPD_DUMP_STATE */
+}
+#endif /* CONFIG_NATIVE_WINDOWS */
+
+
+static int hostapd_global_init(struct hapd_interfaces *interfaces)
+{
+	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();
+
+#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 */
+
+	return 0;
+}
+
+
+static void hostapd_global_deinit(const char *pid_file)
+{
+#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)) {
+		perror("daemon");
+		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) 2002-2011, 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"
+#ifdef CONFIG_DEBUG_FILE
+		"   -f   log output to debug file instead of stdout\n"
+#endif /* CONFIG_DEBUG_FILE */
+		"   -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)
+		return hapd->iconf->bss->iface;
+	return NULL;
+}
+
+
+int main(int argc, char *argv[])
+{
+	struct hapd_interfaces interfaces;
+	int ret = 1;
+	size_t i;
+	int c, debug = 0, daemonize = 0;
+	char *pid_file = NULL;
+	const char *log_file = NULL;
+
+	if (os_program_init())
+		return -1;
+
+	for (;;) {
+		c = getopt(argc, argv, "Bdf:hKP: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 '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;
+		case 'v':
+			show_version();
+			exit(1);
+			break;
+
+		default:
+			usage();
+			break;
+		}
+	}
+
+	if (optind == argc)
+		usage();
+
+	wpa_msg_register_ifname_cb(hostapd_msg_ifname_cb);
+
+	if (log_file)
+		wpa_debug_open_file(log_file);
+
+	interfaces.count = argc - optind;
+	interfaces.iface = os_zalloc(interfaces.count *
+				     sizeof(struct hostapd_iface *));
+	if (interfaces.iface == NULL) {
+		wpa_printf(MSG_ERROR, "malloc failed");
+		return -1;
+	}
+
+	if (hostapd_global_init(&interfaces))
+		return -1;
+
+	/* Initialize interfaces */
+	for (i = 0; i < interfaces.count; i++) {
+		interfaces.iface[i] = hostapd_interface_init(&interfaces,
+							     argv[optind + i],
+							     debug);
+		if (!interfaces.iface[i])
+			goto out;
+	}
+
+	if (hostapd_global_run(&interfaces, daemonize, pid_file))
+		goto out;
+
+	ret = 0;
+
+ out:
+	/* Deinitialize all interfaces */
+	for (i = 0; i < interfaces.count; i++)
+		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();
+
+	os_program_deinit();
+
+	return ret;
+}