[thirdparty/hostap.git] / wpa_supplicant / main.c

/*
 * WPA Supplicant / main() function for UNIX like OSes and MinGW
 * Copyright (c) 2003-2007, 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"
#ifdef __linux__
#include <fcntl.h>
#endif /* __linux__ */

#include "common.h"
#include "wpa_supplicant_i.h"


static void usage(void)
{
	int i;
	printf("%s\n\n%s\n"
	       "usage:\n"
	       "  wpa_supplicant [-BddhKLqqstuvW] [-P<pid file>] "
	       "[-g<global ctrl>] \\\n"
	       "        -i<ifname> -c<config file> [-C<ctrl>] [-D<driver>] "
	       "[-p<driver_param>] \\\n"
	       "        [-b<br_ifname>] [-f<debug file>] \\\n"
	       "        [-N -i<ifname> -c<conf> [-C<ctrl>] "
	       "[-D<driver>] \\\n"
	       "        [-p<driver_param>] [-b<br_ifname>] ...]\n"
	       "\n"
	       "drivers:\n",
	       wpa_supplicant_version, wpa_supplicant_license);

	for (i = 0; wpa_supplicant_drivers[i]; i++) {
		printf("  %s = %s\n",
		       wpa_supplicant_drivers[i]->name,
		       wpa_supplicant_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"
	       "  -d = increase debugging verbosity (-dd even more)\n"
	       "  -D = driver name (can be multiple drivers: nl80211,wext)\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"
	       "  -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 */
	printf("  -t = include timestamp in debug messages\n"
	       "  -h = show this help text\n"
	       "  -L = show license (GPL and BSD)\n"
	       "  -p = driver parameters\n"
	       "  -P = PID file\n"
	       "  -q = decrease debugging verbosity (-qq even less)\n");
#ifdef CONFIG_CTRL_IFACE_DBUS
	printf("  -u = enable DBus control interface\n");
#endif /* CONFIG_CTRL_IFACE_DBUS */
	printf("  -v = show version\n"
	       "  -W = wait for a control interface monitor before starting\n"
	       "  -N = start describing new interface\n");

	printf("example:\n"
	       "  wpa_supplicant -D%s -iwlan0 -c/etc/wpa_supplicant.conf\n",
	       wpa_supplicant_drivers[i] ?
		   wpa_supplicant_drivers[i]->name : "wext");
#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(void)
{
#ifdef __linux__
	int s, 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. */
	for (i = 0; i < 3; i++) {
		s = open("/dev/null", O_RDWR);
		if (s > 2) {
			close(s);
			break;
		}
	}
#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();

	for (;;) {
		c = getopt(argc, argv, "b:Bc:C:D:df:g:hi:KLNp:P:qstuvW");
		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 */
#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 'h':
			usage();
			exitcode = 0;
			goto out;
		case 'i':
			iface->ifname = optarg;
			break;
		case 'K':
			params.wpa_debug_show_keys++;
			break;
		case 'L':
			license();
			exitcode = 0;
			goto out;
		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 */
		case 't':
			params.wpa_debug_timestamp++;
			break;
#ifdef CONFIG_CTRL_IFACE_DBUS
		case 'u':
			params.dbus_ctrl_interface = 1;
			break;
#endif /* CONFIG_CTRL_IFACE_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(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;
	}

	for (i = 0; exitcode == 0 && i < iface_count; i++) {
		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;
		}
		if (wpa_supplicant_add_iface(global, &ifaces[i]) == NULL)
			exitcode = -1;
	}

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

	wpa_supplicant_deinit(global);

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

	os_program_deinit();

	return exitcode;
}
Commit	Line	Data
6fc6879b JM	1	/*
	2	* WPA Supplicant / main() function for UNIX like OSes and MinGW
	3	* Copyright (c) 2003-2007, Jouni Malinen <j@w1.fi>
	4	*
	5	* This program is free software; you can redistribute it and/or modify
	6	* it under the terms of the GNU General Public License version 2 as
	7	* published by the Free Software Foundation.
	8	*
	9	* Alternatively, this software may be distributed under the terms of BSD
	10	* license.
	11	*
	12	* See README and COPYING for more details.
	13	*/
	14
	15	#include "includes.h"
	16	#ifdef __linux__
	17	#include <fcntl.h>
	18	#endif /* __linux__ */
	19
	20	#include "common.h"
	21	#include "wpa_supplicant_i.h"
	22
	23
6fc6879b JM	24	static void usage(void)
	25	{
	26	int i;
	27	printf("%s\n\n%s\n"
	28	"usage:\n"
daa70d49	29	" wpa_supplicant [-BddhKLqqstuvW] [-P<pid file>] "
6fc6879b JM	30	"[-g<global ctrl>] \\\n"
	31	" -i<ifname> -c<config file> [-C<ctrl>] [-D<driver>] "
	32	"[-p<driver_param>] \\\n"
	33	" [-b<br_ifname>] [-f<debug file>] \\\n"
	34	" [-N -i<ifname> -c<conf> [-C<ctrl>] "
	35	"[-D<driver>] \\\n"
	36	" [-p<driver_param>] [-b<br_ifname>] ...]\n"
	37	"\n"
	38	"drivers:\n",
	39	wpa_supplicant_version, wpa_supplicant_license);
	40
	41	for (i = 0; wpa_supplicant_drivers[i]; i++) {
	42	printf(" %s = %s\n",
	43	wpa_supplicant_drivers[i]->name,
	44	wpa_supplicant_drivers[i]->desc);
	45	}
	46
	47	#ifndef CONFIG_NO_STDOUT_DEBUG
	48	printf("options:\n"
	49	" -b = optional bridge interface name\n"
	50	" -B = run daemon in the background\n"
	51	" -c = Configuration file\n"
	52	" -C = ctrl_interface parameter (only used if -c is not)\n"
	53	" -i = interface name\n"
	54	" -d = increase debugging verbosity (-dd even more)\n"
c511c8c6	55	" -D = driver name (can be multiple drivers: nl80211,wext)\n");
6fc6879b	56	#ifdef CONFIG_DEBUG_FILE
c511c8c6	57	printf(" -f = log output to debug file instead of stdout\n");
6fc6879b	58	#endif /* CONFIG_DEBUG_FILE */
c511c8c6	59	printf(" -g = global ctrl_interface\n"
daa70d49 SL	60	" -K = include keys (passwords, etc.) in debug output\n");
	61	#ifdef CONFIG_DEBUG_SYSLOG
	62	printf(" -s = log output to syslog instead of stdout\n");
	63	#endif /* CONFIG_DEBUG_SYSLOG */
	64	printf(" -t = include timestamp in debug messages\n"
6fc6879b	65	" -h = show this help text\n"
c511c8c6 JM	66	" -L = show license (GPL and BSD)\n"
c511c8c6 JM	67	" -p = driver parameters\n"
6fc6879b	68	" -P = PID file\n"
c511c8c6	69	" -q = decrease debugging verbosity (-qq even less)\n");
6fc6879b	70	#ifdef CONFIG_CTRL_IFACE_DBUS
c511c8c6	71	printf(" -u = enable DBus control interface\n");
6fc6879b	72	#endif /* CONFIG_CTRL_IFACE_DBUS */
c511c8c6	73	printf(" -v = show version\n"
6fc6879b JM	74	" -W = wait for a control interface monitor before starting\n"
	75	" -N = start describing new interface\n");
	76
	77	printf("example:\n"
daa70d49 SL	78	" wpa_supplicant -D%s -iwlan0 -c/etc/wpa_supplicant.conf\n",
	79	wpa_supplicant_drivers[i] ?
	80	wpa_supplicant_drivers[i]->name : "wext");
6fc6879b JM	81	#endif /* CONFIG_NO_STDOUT_DEBUG */
	82	}
	83
	84
	85	static void license(void)
	86	{
	87	#ifndef CONFIG_NO_STDOUT_DEBUG
	88	printf("%s\n\n%s%s%s%s%s\n",
	89	wpa_supplicant_version,
	90	wpa_supplicant_full_license1,
	91	wpa_supplicant_full_license2,
	92	wpa_supplicant_full_license3,
	93	wpa_supplicant_full_license4,
	94	wpa_supplicant_full_license5);
	95	#endif /* CONFIG_NO_STDOUT_DEBUG */
	96	}
	97
	98
	99	static void wpa_supplicant_fd_workaround(void)
	100	{
	101	#ifdef __linux__
	102	int s, i;
	103	/* When started from pcmcia-cs scripts, wpa_supplicant might start with
	104	* fd 0, 1, and 2 closed. This will cause some issues because many
	105	* places in wpa_supplicant are still printing out to stdout. As a
	106	* workaround, make sure that fd's 0, 1, and 2 are not used for other
	107	* sockets. */
	108	for (i = 0; i < 3; i++) {
	109	s = open("/dev/null", O_RDWR);
	110	if (s > 2) {
	111	close(s);
	112	break;
	113	}
	114	}
	115	#endif /* __linux__ */
	116	}
	117
	118
	119	int main(int argc, char *argv[])
	120	{
	121	int c, i;
	122	struct wpa_interface ifaces, iface;
	123	int iface_count, exitcode = -1;
	124	struct wpa_params params;
	125	struct wpa_global *global;
	126
	127	if (os_program_init())
	128	return -1;
	129
	130	os_memset(&params, 0, sizeof(params));
	131	params.wpa_debug_level = MSG_INFO;
	132
	133	iface = ifaces = os_zalloc(sizeof(struct wpa_interface));
	134	if (ifaces == NULL)
	135	return -1;
	136	iface_count = 1;
	137
	138	wpa_supplicant_fd_workaround();
	139
	140	for (;;) {
daa70d49	141	c = getopt(argc, argv, "b:Bc:C:D:df:g:hi:KLNp:P:qstuvW");
6fc6879b JM	142	if (c < 0)
	143	break;
	144	switch (c) {
	145	case 'b':
	146	iface->bridge_ifname = optarg;
	147	break;
	148	case 'B':
	149	params.daemonize++;
	150	break;
	151	case 'c':
	152	iface->confname = optarg;
	153	break;
	154	case 'C':
	155	iface->ctrl_interface = optarg;
	156	break;
	157	case 'D':
	158	iface->driver = optarg;
	159	break;
	160	case 'd':
	161	#ifdef CONFIG_NO_STDOUT_DEBUG
	162	printf("Debugging disabled with "
	163	"CONFIG_NO_STDOUT_DEBUG=y build time "
	164	"option.\n");
	165	goto out;
	166	#else /* CONFIG_NO_STDOUT_DEBUG */
	167	params.wpa_debug_level--;
	168	break;
	169	#endif /* CONFIG_NO_STDOUT_DEBUG */
	170	#ifdef CONFIG_DEBUG_FILE
	171	case 'f':
	172	params.wpa_debug_file_path = optarg;
	173	break;
	174	#endif /* CONFIG_DEBUG_FILE */
	175	case 'g':
	176	params.ctrl_interface = optarg;
	177	break;
	178	case 'h':
	179	usage();
	180	exitcode = 0;
	181	goto out;
	182	case 'i':
	183	iface->ifname = optarg;
	184	break;
	185	case 'K':
	186	params.wpa_debug_show_keys++;
	187	break;
	188	case 'L':
	189	license();
	190	exitcode = 0;
	191	goto out;
	192	case 'p':
	193	iface->driver_param = optarg;
	194	break;
	195	case 'P':
	196	os_free(params.pid_file);
	197	params.pid_file = os_rel2abs_path(optarg);
	198	break;
	199	case 'q':
	200	params.wpa_debug_level++;
	201	break;
daa70d49 SL	202	#ifdef CONFIG_DEBUG_SYSLOG
	203	case 's':
	204	params.wpa_debug_syslog++;
	205	break;
	206	#endif /* CONFIG_DEBUG_SYSLOG */
6fc6879b JM	207	case 't':
	208	params.wpa_debug_timestamp++;
	209	break;
	210	#ifdef CONFIG_CTRL_IFACE_DBUS
	211	case 'u':
	212	params.dbus_ctrl_interface = 1;
	213	break;
	214	#endif /* CONFIG_CTRL_IFACE_DBUS */
	215	case 'v':
	216	printf("%s\n", wpa_supplicant_version);
	217	exitcode = 0;
	218	goto out;
	219	case 'W':
	220	params.wait_for_monitor++;
	221	break;
	222	case 'N':
	223	iface_count++;
	224	iface = os_realloc(ifaces, iface_count *
	225	sizeof(struct wpa_interface));
	226	if (iface == NULL)
	227	goto out;
	228	ifaces = iface;
	229	iface = &ifaces[iface_count - 1];
	230	os_memset(iface, 0, sizeof(*iface));
	231	break;
	232	default:
	233	usage();
	234	exitcode = 0;
	235	goto out;
	236	}
	237	}
	238
	239	exitcode = 0;
	240	global = wpa_supplicant_init(&params);
	241	if (global == NULL) {
	242	wpa_printf(MSG_ERROR, "Failed to initialize wpa_supplicant");
	243	exitcode = -1;
	244	goto out;
	245	}
	246
	247	for (i = 0; exitcode == 0 && i < iface_count; i++) {
	248	if ((ifaces[i].confname == NULL &&
	249	ifaces[i].ctrl_interface == NULL) \|\|
	250	ifaces[i].ifname == NULL) {
	251	if (iface_count == 1 && (params.ctrl_interface \|\|
	252	params.dbus_ctrl_interface))
	253	break;
	254	usage();
	255	exitcode = -1;
	256	break;
	257	}
	258	if (wpa_supplicant_add_iface(global, &ifaces[i]) == NULL)
	259	exitcode = -1;
	260	}
	261
	262	if (exitcode == 0)
	263	exitcode = wpa_supplicant_run(global);
	264
	265	wpa_supplicant_deinit(global);
	266
	267	out:
	268	os_free(ifaces);
	269	os_free(params.pid_file);
	270
271	os_program_deinit();
272
273	return exitcode;
274	}