wpa_supplicant/main.c - vendor/opensource/hostap - Git at Google

 /*
  * WPA Supplicant / main() function for UNIX like OSes and MinGW
  * Copyright (c) 2003-2013, Jouni Malinen <j@w1.fi>
  *
  * This software may be distributed under the terms of the BSD license.
  * See README for more details.
  */

 #include "includes.h"
 #ifdef __linux__
 #include <fcntl.h>
 #endif /* __linux__ */

 #include "common.h"
 #include "wpa_supplicant_i.h"
 #include "driver_i.h"
 #include "p2p_supplicant.h"


 static void usage(void)
 {
 	int i;
 	printf("%s\n\n%s\n"
 	       "usage:\n"
 	       "  wpa_supplicant [-BddhKLqq"
 #ifdef CONFIG_DEBUG_SYSLOG
 	       "s"
 #endif /* CONFIG_DEBUG_SYSLOG */
 	       "t"
 #ifdef CONFIG_DBUS
 	       "u"
 #endif /* CONFIG_DBUS */
 	       "vW] [-P<pid file>] "
 	       "[-g<global ctrl>] \\\n"
 	       "        [-G<group>] \\\n"
 	       "        -i<ifname> -c<config file> [-C<ctrl>] [-D<driver>] "
 	       "[-p<driver_param>] \\\n"
 	       "        [-b<br_ifname>] [-e<entropy file>]"
 #ifdef CONFIG_DEBUG_FILE
 	       " [-f<debug file>]"
 #endif /* CONFIG_DEBUG_FILE */
 	       " \\\n"
 	       "        [-o<override driver>] [-O<override ctrl>] \\\n"
 	       "        [-N -i<ifname> -c<conf> [-C<ctrl>] "
 	       "[-D<driver>] \\\n"
 #ifdef CONFIG_P2P
 	       "        [-m<P2P Device config file>] \\\n"
 #endif /* CONFIG_P2P */
 	       "        [-p<driver_param>] [-b<br_ifname>] [-I<config file>] "
 	       "...]\n"
 	       "\n"
 	       "drivers:\n",
 	       wpa_supplicant_version, wpa_supplicant_license);

 	for (i = 0; wpa_drivers[i]; i++) {
 		printf("  %s = %s\n",
 		       wpa_drivers[i]->name,
 		       wpa_drivers[i]->desc);
 	}

 #ifndef CONFIG_NO_STDOUT_DEBUG
 	printf("options:\n"
 	       "  -b = optional bridge interface name\n"
 	       "  -B = run daemon in the background\n"
 	       "  -c = Configuration file\n"
 	       "  -C = ctrl_interface parameter (only used if -c is not)\n"
 	       "  -i = interface name\n"
 	       "  -I = additional configuration file\n"
 	       "  -d = increase debugging verbosity (-dd even more)\n"
 	       "  -D = driver name (can be multiple drivers: nl80211,wext)\n"
 	       "  -e = entropy file\n");
 #ifdef CONFIG_DEBUG_FILE
 	printf("  -f = log output to debug file instead of stdout\n");
 #endif /* CONFIG_DEBUG_FILE */
 	printf("  -g = global ctrl_interface\n"
 	       "  -G = global ctrl_interface group\n"
 	       "  -K = include keys (passwords, etc.) in debug output\n");
 #ifdef CONFIG_DEBUG_SYSLOG
 	printf("  -s = log output to syslog instead of stdout\n");
 #endif /* CONFIG_DEBUG_SYSLOG */
 #ifdef CONFIG_DEBUG_LINUX_TRACING
 	printf("  -T = record to Linux tracing in addition to logging\n");
 	printf("       (records all messages regardless of debug verbosity)\n");
 #endif /* CONFIG_DEBUG_LINUX_TRACING */
 	printf("  -t = include timestamp in debug messages\n"
 	       "  -h = show this help text\n"
 	       "  -L = show license (BSD)\n"
 	       "  -o = override driver parameter for new interfaces\n"
 	       "  -O = override ctrl_interface parameter for new interfaces\n"
 	       "  -p = driver parameters\n"
 	       "  -P = PID file\n"
 	       "  -q = decrease debugging verbosity (-qq even less)\n");
 #ifdef CONFIG_DBUS
 	printf("  -u = enable DBus control interface\n");
 #endif /* CONFIG_DBUS */
 	printf("  -v = show version\n"
 	       "  -W = wait for a control interface monitor before starting\n"
 #ifdef CONFIG_P2P
 	       "  -m = Configuration file for the P2P Device interface\n"
 #endif /* CONFIG_P2P */
 	       "  -N = start describing new interface\n");

 	printf("example:\n"
 	       "  wpa_supplicant -D%s -iwlan0 -c/etc/wpa_supplicant.conf\n",
 	       wpa_drivers[0] ? wpa_drivers[0]->name : "nl80211");
 #endif /* CONFIG_NO_STDOUT_DEBUG */
 }


 static void license(void)
 {
 #ifndef CONFIG_NO_STDOUT_DEBUG
 	printf("%s\n\n%s%s%s%s%s\n",
 	       wpa_supplicant_version,
 	       wpa_supplicant_full_license1,
 	       wpa_supplicant_full_license2,
 	       wpa_supplicant_full_license3,
 	       wpa_supplicant_full_license4,
 	       wpa_supplicant_full_license5);
 #endif /* CONFIG_NO_STDOUT_DEBUG */
 }


 static void wpa_supplicant_fd_workaround(int start)
 {
 #ifdef __linux__
 	static int fd[3] = { -1, -1, -1 };
 	int i;
 	/* When started from pcmcia-cs scripts, wpa_supplicant might start with
 	 * fd 0, 1, and 2 closed. This will cause some issues because many
 	 * places in wpa_supplicant are still printing out to stdout. As a
 	 * workaround, make sure that fd's 0, 1, and 2 are not used for other
 	 * sockets. */
 	if (start) {
 		for (i = 0; i < 3; i++) {
 			fd[i] = open("/dev/null", O_RDWR);
 			if (fd[i] > 2) {
 				close(fd[i]);
 				fd[i] = -1;
 				break;
 			}
 		}
 	} else {
 		for (i = 0; i < 3; i++) {
 			if (fd[i] >= 0) {
 				close(fd[i]);
 				fd[i] = -1;
 			}
 		}
 	}
 #endif /* __linux__ */
 }


 int main(int argc, char *argv[])
 {
 	int c, i;
 	struct wpa_interface *ifaces, *iface;
 	int iface_count, exitcode = -1;
 	struct wpa_params params;
 	struct wpa_global *global;

 	if (os_program_init())
 		return -1;

 	os_memset(&params, 0, sizeof(params));
 	params.wpa_debug_level = MSG_INFO;

 	iface = ifaces = os_zalloc(sizeof(struct wpa_interface));
 	if (ifaces == NULL)
 		return -1;
 	iface_count = 1;

 	wpa_supplicant_fd_workaround(1);

 	for (;;) {
 		c = getopt(argc, argv,
 			   "b:Bc:C:D:de:f:g:G:hi:I:KLm:No:O:p:P:qsTtuvW");
 		if (c < 0)
 			break;
 		switch (c) {
 		case 'b':
 			iface->bridge_ifname = optarg;
 			break;
 		case 'B':
 			params.daemonize++;
 			break;
 		case 'c':
 			iface->confname = optarg;
 			break;
 		case 'C':
 			iface->ctrl_interface = optarg;
 			break;
 		case 'D':
 			iface->driver = optarg;
 			break;
 		case 'd':
 #ifdef CONFIG_NO_STDOUT_DEBUG
 			printf("Debugging disabled with "
 			       "CONFIG_NO_STDOUT_DEBUG=y build time "
 			       "option.\n");
 			goto out;
 #else /* CONFIG_NO_STDOUT_DEBUG */
 			params.wpa_debug_level--;
 			break;
 #endif /* CONFIG_NO_STDOUT_DEBUG */
 		case 'e':
 			params.entropy_file = optarg;
 			break;
 #ifdef CONFIG_DEBUG_FILE
 		case 'f':
 			params.wpa_debug_file_path = optarg;
 			break;
 #endif /* CONFIG_DEBUG_FILE */
 		case 'g':
 			params.ctrl_interface = optarg;
 			break;
 		case 'G':
 			params.ctrl_interface_group = optarg;
 			break;
 		case 'h':
 			usage();
 			exitcode = 0;
 			goto out;
 		case 'i':
 			iface->ifname = optarg;
 			break;
 		case 'I':
 			iface->confanother = optarg;
 			break;
 		case 'K':
 			params.wpa_debug_show_keys++;
 			break;
 		case 'L':
 			license();
 			exitcode = 0;
 			goto out;
 #ifdef CONFIG_P2P
 		case 'm':
 			iface->conf_p2p_dev = optarg;
 			break;
 #endif /* CONFIG_P2P */
 		case 'o':
 			params.override_driver = optarg;
 			break;
 		case 'O':
 			params.override_ctrl_interface = optarg;
 			break;
 		case 'p':
 			iface->driver_param = optarg;
 			break;
 		case 'P':
 			os_free(params.pid_file);
 			params.pid_file = os_rel2abs_path(optarg);
 			break;
 		case 'q':
 			params.wpa_debug_level++;
 			break;
 #ifdef CONFIG_DEBUG_SYSLOG
 		case 's':
 			params.wpa_debug_syslog++;
 			break;
 #endif /* CONFIG_DEBUG_SYSLOG */
 #ifdef CONFIG_DEBUG_LINUX_TRACING
 		case 'T':
 			params.wpa_debug_tracing++;
 			break;
 #endif /* CONFIG_DEBUG_LINUX_TRACING */
 		case 't':
 			params.wpa_debug_timestamp++;
 			break;
 #ifdef CONFIG_DBUS
 		case 'u':
 			params.dbus_ctrl_interface = 1;
 			break;
 #endif /* CONFIG_DBUS */
 		case 'v':
 			printf("%s\n", wpa_supplicant_version);
 			exitcode = 0;
 			goto out;
 		case 'W':
 			params.wait_for_monitor++;
 			break;
 		case 'N':
 			iface_count++;
 			iface = os_realloc_array(ifaces, iface_count,
 						 sizeof(struct wpa_interface));
 			if (iface == NULL)
 				goto out;
 			ifaces = iface;
 			iface = &ifaces[iface_count - 1];
 			os_memset(iface, 0, sizeof(*iface));
 			break;
 		default:
 			usage();
 			exitcode = 0;
 			goto out;
 		}
 	}

 	exitcode = 0;
 	global = wpa_supplicant_init(&params);
 	if (global == NULL) {
 		wpa_printf(MSG_ERROR, "Failed to initialize wpa_supplicant");
 		exitcode = -1;
 		goto out;
 	} else {
 		wpa_printf(MSG_INFO, "Successfully initialized "
 			   "wpa_supplicant");
 	}

 	for (i = 0; exitcode == 0 && i < iface_count; i++) {
 		struct wpa_supplicant *wpa_s;

 		if ((ifaces[i].confname == NULL &&
 		     ifaces[i].ctrl_interface == NULL) ||
 		    ifaces[i].ifname == NULL) {
 			if (iface_count == 1 && (params.ctrl_interface ||
 						 params.dbus_ctrl_interface))
 				break;
 			usage();
 			exitcode = -1;
 			break;
 		}
 		wpa_s = wpa_supplicant_add_iface(global, &ifaces[i], NULL);
 		if (wpa_s == NULL) {
 			exitcode = -1;
 			break;
 		}
 	}

 	if (exitcode == 0)
 		exitcode = wpa_supplicant_run(global);

 	wpa_supplicant_deinit(global);

 out:
 	wpa_supplicant_fd_workaround(0);
 	os_free(ifaces);
 	os_free(params.pid_file);

 	os_program_deinit();

 	return exitcode;
 }
	/*
	* WPA Supplicant / main() function for UNIX like OSes and MinGW
	* Copyright (c) 2003-2013, Jouni Malinen <j@w1.fi>
	*
	* This software may be distributed under the terms of the BSD license.
	* See README for more details.
	*/

	#include "includes.h"
	#ifdef __linux__
	#include <fcntl.h>
	#endif /* __linux__ */

	#include "common.h"
	#include "wpa_supplicant_i.h"
	#include "driver_i.h"
	#include "p2p_supplicant.h"


	static void usage(void)
	{
	int i;
	printf("%s\n\n%s\n"
	"usage:\n"
	" wpa_supplicant [-BddhKLqq"
	#ifdef CONFIG_DEBUG_SYSLOG
	"s"
	#endif /* CONFIG_DEBUG_SYSLOG */
	"t"
	#ifdef CONFIG_DBUS
	"u"
	#endif /* CONFIG_DBUS */
	"vW] [-P<pid file>] "
	"[-g<global ctrl>] \\\n"
	" [-G<group>] \\\n"
	" -i<ifname> -c<config file> [-C<ctrl>] [-D<driver>] "
	"[-p<driver_param>] \\\n"
	" [-b<br_ifname>] [-e<entropy file>]"
	#ifdef CONFIG_DEBUG_FILE
	" [-f<debug file>]"
	#endif /* CONFIG_DEBUG_FILE */
	" \\\n"
	" [-o<override driver>] [-O<override ctrl>] \\\n"
	" [-N -i<ifname> -c<conf> [-C<ctrl>] "
	"[-D<driver>] \\\n"
	#ifdef CONFIG_P2P
	" [-m<P2P Device config file>] \\\n"
	#endif /* CONFIG_P2P */
	" [-p<driver_param>] [-b<br_ifname>] [-I<config file>] "
	"...]\n"
	"\n"
	"drivers:\n",
	wpa_supplicant_version, wpa_supplicant_license);

	for (i = 0; wpa_drivers[i]; i++) {
	printf(" %s = %s\n",
	wpa_drivers[i]->name,
	wpa_drivers[i]->desc);
	}

	#ifndef CONFIG_NO_STDOUT_DEBUG
	printf("options:\n"
	" -b = optional bridge interface name\n"
	" -B = run daemon in the background\n"
	" -c = Configuration file\n"
	" -C = ctrl_interface parameter (only used if -c is not)\n"
	" -i = interface name\n"
	" -I = additional configuration file\n"
	" -d = increase debugging verbosity (-dd even more)\n"
	" -D = driver name (can be multiple drivers: nl80211,wext)\n"
	" -e = entropy file\n");
	#ifdef CONFIG_DEBUG_FILE
	printf(" -f = log output to debug file instead of stdout\n");
	#endif /* CONFIG_DEBUG_FILE */
	printf(" -g = global ctrl_interface\n"
	" -G = global ctrl_interface group\n"
	" -K = include keys (passwords, etc.) in debug output\n");
	#ifdef CONFIG_DEBUG_SYSLOG
	printf(" -s = log output to syslog instead of stdout\n");
	#endif /* CONFIG_DEBUG_SYSLOG */
	#ifdef CONFIG_DEBUG_LINUX_TRACING
	printf(" -T = record to Linux tracing in addition to logging\n");
	printf(" (records all messages regardless of debug verbosity)\n");
	#endif /* CONFIG_DEBUG_LINUX_TRACING */
	printf(" -t = include timestamp in debug messages\n"
	" -h = show this help text\n"
	" -L = show license (BSD)\n"
	" -o = override driver parameter for new interfaces\n"
	" -O = override ctrl_interface parameter for new interfaces\n"
	" -p = driver parameters\n"
	" -P = PID file\n"
	" -q = decrease debugging verbosity (-qq even less)\n");
	#ifdef CONFIG_DBUS
	printf(" -u = enable DBus control interface\n");
	#endif /* CONFIG_DBUS */
	printf(" -v = show version\n"
	" -W = wait for a control interface monitor before starting\n"
	#ifdef CONFIG_P2P
	" -m = Configuration file for the P2P Device interface\n"
	#endif /* CONFIG_P2P */
	" -N = start describing new interface\n");

	printf("example:\n"
	" wpa_supplicant -D%s -iwlan0 -c/etc/wpa_supplicant.conf\n",
	wpa_drivers[0] ? wpa_drivers[0]->name : "nl80211");
	#endif /* CONFIG_NO_STDOUT_DEBUG */
	}


	static void license(void)
	{
	#ifndef CONFIG_NO_STDOUT_DEBUG
	printf("%s\n\n%s%s%s%s%s\n",
	wpa_supplicant_version,
	wpa_supplicant_full_license1,
	wpa_supplicant_full_license2,
	wpa_supplicant_full_license3,
	wpa_supplicant_full_license4,
	wpa_supplicant_full_license5);
	#endif /* CONFIG_NO_STDOUT_DEBUG */
	}


	static void wpa_supplicant_fd_workaround(int start)
	{
	#ifdef __linux__
	static int fd[3] = { -1, -1, -1 };
	int i;
	/* When started from pcmcia-cs scripts, wpa_supplicant might start with
	* fd 0, 1, and 2 closed. This will cause some issues because many
	* places in wpa_supplicant are still printing out to stdout. As a
	* workaround, make sure that fd's 0, 1, and 2 are not used for other
	* sockets. */
	if (start) {
	for (i = 0; i < 3; i++) {
	fd[i] = open("/dev/null", O_RDWR);
	if (fd[i] > 2) {
	close(fd[i]);
	fd[i] = -1;
	break;
	}
	}
	} else {
	for (i = 0; i < 3; i++) {
	if (fd[i] >= 0) {
	close(fd[i]);
	fd[i] = -1;
	}
	}
	}
	#endif /* __linux__ */
	}


	int main(int argc, char *argv[])
	{
	int c, i;
	struct wpa_interface ifaces, iface;
	int iface_count, exitcode = -1;
	struct wpa_params params;
	struct wpa_global *global;

	if (os_program_init())
	return -1;

	os_memset(&params, 0, sizeof(params));
	params.wpa_debug_level = MSG_INFO;

	iface = ifaces = os_zalloc(sizeof(struct wpa_interface));
	if (ifaces == NULL)
	return -1;
	iface_count = 1;

	wpa_supplicant_fd_workaround(1);

	for (;;) {
	c = getopt(argc, argv,
	"b:Bc:C:D:de:f:g:G:hi:I:KLm:No:O:p:P:qsTtuvW");
	if (c < 0)
	break;
	switch (c) {
	case 'b':
	iface->bridge_ifname = optarg;
	break;
	case 'B':
	params.daemonize++;
	break;
	case 'c':
	iface->confname = optarg;
	break;
	case 'C':
	iface->ctrl_interface = optarg;
	break;
	case 'D':
	iface->driver = optarg;
	break;
	case 'd':
	#ifdef CONFIG_NO_STDOUT_DEBUG
	printf("Debugging disabled with "
	"CONFIG_NO_STDOUT_DEBUG=y build time "
	"option.\n");
	goto out;
	#else /* CONFIG_NO_STDOUT_DEBUG */
	params.wpa_debug_level--;
	break;
	#endif /* CONFIG_NO_STDOUT_DEBUG */
	case 'e':
	params.entropy_file = optarg;
	break;
	#ifdef CONFIG_DEBUG_FILE
	case 'f':
	params.wpa_debug_file_path = optarg;
	break;
	#endif /* CONFIG_DEBUG_FILE */
	case 'g':
	params.ctrl_interface = optarg;
	break;
	case 'G':
	params.ctrl_interface_group = optarg;
	break;
	case 'h':
	usage();
	exitcode = 0;
	goto out;
	case 'i':
	iface->ifname = optarg;
	break;
	case 'I':
	iface->confanother = optarg;
	break;
	case 'K':
	params.wpa_debug_show_keys++;
	break;
	case 'L':
	license();
	exitcode = 0;
	goto out;
	#ifdef CONFIG_P2P
	case 'm':
	iface->conf_p2p_dev = optarg;
	break;
	#endif /* CONFIG_P2P */
	case 'o':
	params.override_driver = optarg;
	break;
	case 'O':
	params.override_ctrl_interface = optarg;
	break;
	case 'p':
	iface->driver_param = optarg;
	break;
	case 'P':
	os_free(params.pid_file);
	params.pid_file = os_rel2abs_path(optarg);
	break;
	case 'q':
	params.wpa_debug_level++;
	break;
	#ifdef CONFIG_DEBUG_SYSLOG
	case 's':
	params.wpa_debug_syslog++;
	break;
	#endif /* CONFIG_DEBUG_SYSLOG */
	#ifdef CONFIG_DEBUG_LINUX_TRACING
	case 'T':
	params.wpa_debug_tracing++;
	break;
	#endif /* CONFIG_DEBUG_LINUX_TRACING */
	case 't':
	params.wpa_debug_timestamp++;
	break;
	#ifdef CONFIG_DBUS
	case 'u':
	params.dbus_ctrl_interface = 1;
	break;
	#endif /* CONFIG_DBUS */
	case 'v':
	printf("%s\n", wpa_supplicant_version);
	exitcode = 0;
	goto out;
	case 'W':
	params.wait_for_monitor++;
	break;
	case 'N':
	iface_count++;
	iface = os_realloc_array(ifaces, iface_count,
	sizeof(struct wpa_interface));
	if (iface == NULL)
	goto out;
	ifaces = iface;
	iface = &ifaces[iface_count - 1];
	os_memset(iface, 0, sizeof(*iface));
	break;
	default:
	usage();
	exitcode = 0;
	goto out;
	}
	}

	exitcode = 0;
	global = wpa_supplicant_init(&params);
	if (global == NULL) {
	wpa_printf(MSG_ERROR, "Failed to initialize wpa_supplicant");
	exitcode = -1;
	goto out;
	} else {
	wpa_printf(MSG_INFO, "Successfully initialized "
	"wpa_supplicant");
	}

	for (i = 0; exitcode == 0 && i < iface_count; i++) {
	struct wpa_supplicant *wpa_s;

	if ((ifaces[i].confname == NULL &&
	ifaces[i].ctrl_interface == NULL) \|\|
	ifaces[i].ifname == NULL) {
	if (iface_count == 1 && (params.ctrl_interface \|\|
	params.dbus_ctrl_interface))
	break;
	usage();
	exitcode = -1;
	break;
	}
	wpa_s = wpa_supplicant_add_iface(global, &ifaces[i], NULL);
	if (wpa_s == NULL) {
	exitcode = -1;
	break;
	}
	}

	if (exitcode == 0)
	exitcode = wpa_supplicant_run(global);

	wpa_supplicant_deinit(global);

	out:
	wpa_supplicant_fd_workaround(0);
	os_free(ifaces);
	os_free(params.pid_file);

	os_program_deinit();

	return exitcode;
	}