[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 [-BddhKLqqtuvW] [-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
	       "  -f = log output to debug file instead of stdout\n"
#endif /* CONFIG_DEBUG_FILE */
	       "  -g = global ctrl_interface\n"
	       "  -K = include keys (passwords, etc.) in debug output\n"
	       "  -t = include timestamp in debug messages\n"
	       "  -h = show this help text\n"
	       "  -L = show license (GPL and BSD)\n");
	printf("  -p = driver parameters\n"
	       "  -P = PID file\n"
	       "  -q = decrease debugging verbosity (-qq even less)\n"
#ifdef CONFIG_CTRL_IFACE_DBUS
	       "  -u = enable DBus control interface\n"
#endif /* CONFIG_CTRL_IFACE_DBUS */
	       "  -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 -Dwext -iwlan0 -c/etc/wpa_supplicant.conf\n");
#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:qtuvW");
		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;
		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"
0e5776f6	29	" wpa_supplicant [-BddhKLqqtuvW] [-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"
362f781e	55	" -D = driver name (can be multiple drivers: nl80211,wext)\n"
6fc6879b JM	56	#ifdef CONFIG_DEBUG_FILE
	57	" -f = log output to debug file instead of stdout\n"
	58	#endif /* CONFIG_DEBUG_FILE */
	59	" -g = global ctrl_interface\n"
	60	" -K = include keys (passwords, etc.) in debug output\n"
	61	" -t = include timestamp in debug messages\n"
	62	" -h = show this help text\n"
	63	" -L = show license (GPL and BSD)\n");
	64	printf(" -p = driver parameters\n"
	65	" -P = PID file\n"
	66	" -q = decrease debugging verbosity (-qq even less)\n"
	67	#ifdef CONFIG_CTRL_IFACE_DBUS
	68	" -u = enable DBus control interface\n"
	69	#endif /* CONFIG_CTRL_IFACE_DBUS */
	70	" -v = show version\n"
	71	" -W = wait for a control interface monitor before starting\n"
	72	" -N = start describing new interface\n");
	73
	74	printf("example:\n"
	75	" wpa_supplicant -Dwext -iwlan0 -c/etc/wpa_supplicant.conf\n");
	76	#endif /* CONFIG_NO_STDOUT_DEBUG */
	77	}
	78
	79
	80	static void license(void)
	81	{
	82	#ifndef CONFIG_NO_STDOUT_DEBUG
	83	printf("%s\n\n%s%s%s%s%s\n",
	84	wpa_supplicant_version,
	85	wpa_supplicant_full_license1,
	86	wpa_supplicant_full_license2,
	87	wpa_supplicant_full_license3,
	88	wpa_supplicant_full_license4,
	89	wpa_supplicant_full_license5);
	90	#endif /* CONFIG_NO_STDOUT_DEBUG */
	91	}
	92
	93
	94	static void wpa_supplicant_fd_workaround(void)
	95	{
	96	#ifdef __linux__
	97	int s, i;
	98	/* When started from pcmcia-cs scripts, wpa_supplicant might start with
	99	* fd 0, 1, and 2 closed. This will cause some issues because many
	100	* places in wpa_supplicant are still printing out to stdout. As a
	101	* workaround, make sure that fd's 0, 1, and 2 are not used for other
	102	* sockets. */
	103	for (i = 0; i < 3; i++) {
	104	s = open("/dev/null", O_RDWR);
	105	if (s > 2) {
	106	close(s);
	107	break;
	108	}
	109	}
	110	#endif /* __linux__ */
	111	}
	112
	113
	114	int main(int argc, char *argv[])
	115	{
	116	int c, i;
	117	struct wpa_interface ifaces, iface;
	118	int iface_count, exitcode = -1;
	119	struct wpa_params params;
120	struct wpa_global *global;
121
122	if (os_program_init())
123	return -1;
124
125	os_memset(&params, 0, sizeof(params));
126	params.wpa_debug_level = MSG_INFO;
127
128	iface = ifaces = os_zalloc(sizeof(struct wpa_interface));
129	if (ifaces == NULL)
130	return -1;
131	iface_count = 1;
132
133	wpa_supplicant_fd_workaround();
134
135	for (;;) {
136	c = getopt(argc, argv, "b:Bc:C:D:df:g:hi:KLNp:P:qtuvW");
137	if (c < 0)
138	break;
139	switch (c) {
140	case 'b':
141	iface->bridge_ifname = optarg;
142	break;
143	case 'B':
144	params.daemonize++;
145	break;
146	case 'c':
147	iface->confname = optarg;
148	break;
149	case 'C':
150	iface->ctrl_interface = optarg;
151	break;
152	case 'D':
153	iface->driver = optarg;
154	break;
155	case 'd':
156	#ifdef CONFIG_NO_STDOUT_DEBUG
157	printf("Debugging disabled with "
158	"CONFIG_NO_STDOUT_DEBUG=y build time "
159	"option.\n");
160	goto out;
161	#else /* CONFIG_NO_STDOUT_DEBUG */
162	params.wpa_debug_level--;
163	break;
164	#endif /* CONFIG_NO_STDOUT_DEBUG */
165	#ifdef CONFIG_DEBUG_FILE
166	case 'f':
167	params.wpa_debug_file_path = optarg;
168	break;
169	#endif /* CONFIG_DEBUG_FILE */
170	case 'g':
171	params.ctrl_interface = optarg;
172	break;
173	case 'h':
174	usage();
175	exitcode = 0;
176	goto out;
177	case 'i':
178	iface->ifname = optarg;
179	break;
180	case 'K':
181	params.wpa_debug_show_keys++;
182	break;
183	case 'L':
184	license();
185	exitcode = 0;
186	goto out;
187	case 'p':
188	iface->driver_param = optarg;
189	break;
190	case 'P':
191	os_free(params.pid_file);
192	params.pid_file = os_rel2abs_path(optarg);
193	break;
194	case 'q':
195	params.wpa_debug_level++;
196	break;
197	case 't':
198	params.wpa_debug_timestamp++;
199	break;
200	#ifdef CONFIG_CTRL_IFACE_DBUS
201	case 'u':
202	params.dbus_ctrl_interface = 1;
203	break;
204	#endif /* CONFIG_CTRL_IFACE_DBUS */
205	case 'v':
206	printf("%s\n", wpa_supplicant_version);
207	exitcode = 0;
208	goto out;
209	case 'W':
210	params.wait_for_monitor++;
211	break;
212	case 'N':
213	iface_count++;
214	iface = os_realloc(ifaces, iface_count *
215	sizeof(struct wpa_interface));
216	if (iface == NULL)
217	goto out;
218	ifaces = iface;
219	iface = &ifaces[iface_count - 1];
220	os_memset(iface, 0, sizeof(*iface));
221	break;
222	default:
223	usage();
224	exitcode = 0;
225	goto out;
226	}
227	}
228
229	exitcode = 0;
230	global = wpa_supplicant_init(&params);
231	if (global == NULL) {
232	wpa_printf(MSG_ERROR, "Failed to initialize wpa_supplicant");
233	exitcode = -1;
234	goto out;
235	}
236
237	for (i = 0; exitcode == 0 && i < iface_count; i++) {
238	if ((ifaces[i].confname == NULL &&
239	ifaces[i].ctrl_interface == NULL) \|\|
240	ifaces[i].ifname == NULL) {
241	if (iface_count == 1 && (params.ctrl_interface \|\|
242	params.dbus_ctrl_interface))
243	break;
244	usage();
245	exitcode = -1;
246	break;
247	}
248	if (wpa_supplicant_add_iface(global, &ifaces[i]) == NULL)
249	exitcode = -1;
250	}
251
252	if (exitcode == 0)
253	exitcode = wpa_supplicant_run(global);
254
255	wpa_supplicant_deinit(global);
256
257	out:
258	os_free(ifaces);
259	os_free(params.pid_file);
260
261	os_program_deinit();
262
263	return exitcode;
264	}