1 /*
2 * WPA Supplicant / main() function for UNIX like OSes and MinGW
3 * Copyright (c) 2003-2013, Jouni Malinen <j@w1.fi>
4 *
5 * This software may be distributed under the terms of the BSD license.
6 * See README for more details.
7 */
8
9 #include "includes.h"
10 #ifdef __linux__
11 #include <fcntl.h>
12 #endif /* __linux__ */
13
14 #include "common.h"
15 #include "fst/fst.h"
16 #include "wpa_supplicant_i.h"
17 #include "driver_i.h"
18 #include "p2p_supplicant.h"
19
20
usage(void)21 static void usage(void)
22 {
23 int i;
24 printf("%s\n\n%s\n"
25 "usage:\n"
26 " wpa_supplicant [-BddhKLqq"
27 #ifdef CONFIG_DEBUG_SYSLOG
28 "s"
29 #endif /* CONFIG_DEBUG_SYSLOG */
30 "t"
31 #ifdef CONFIG_CTRL_IFACE_DBUS_NEW
32 "u"
33 #endif /* CONFIG_CTRL_IFACE_DBUS_NEW */
34 "vW] [-P<pid file>] "
35 "[-g<global ctrl>] \\\n"
36 " [-G<group>] \\\n"
37 " -i<ifname> -c<config file> [-C<ctrl>] [-D<driver>] "
38 "[-p<driver_param>] \\\n"
39 " [-b<br_ifname>] [-e<entropy file>]"
40 #ifdef CONFIG_DEBUG_FILE
41 " [-f<debug file>]"
42 #endif /* CONFIG_DEBUG_FILE */
43 " \\\n"
44 " [-o<override driver>] [-O<override ctrl>] \\\n"
45 " [-N -i<ifname> -c<conf> [-C<ctrl>] "
46 "[-D<driver>] \\\n"
47 #ifdef CONFIG_P2P
48 " [-m<P2P Device config file>] \\\n"
49 #endif /* CONFIG_P2P */
50 " [-p<driver_param>] [-b<br_ifname>] [-I<config file>] "
51 "...]\n"
52 "\n"
53 "drivers:\n",
54 wpa_supplicant_version, wpa_supplicant_license);
55
56 for (i = 0; wpa_drivers[i]; i++) {
57 printf(" %s = %s\n",
58 wpa_drivers[i]->name,
59 wpa_drivers[i]->desc);
60 }
61
62 #ifndef CONFIG_NO_STDOUT_DEBUG
63 printf("options:\n"
64 " -b = optional bridge interface name\n"
65 " -B = run daemon in the background\n"
66 " -c = Configuration file\n"
67 " -C = ctrl_interface parameter (only used if -c is not)\n"
68 " -d = increase debugging verbosity (-dd even more)\n"
69 " -D = driver name (can be multiple drivers: bsd,wired)\n"
70 " -e = entropy file\n"
71 #ifdef CONFIG_DEBUG_FILE
72 " -f = log output to debug file instead of stdout\n"
73 #endif /* CONFIG_DEBUG_FILE */
74 " -g = global ctrl_interface\n"
75 " -G = global ctrl_interface group\n"
76 " -h = show this help text\n"
77 " -i = interface name\n"
78 " -I = additional configuration file\n"
79 " -K = include keys (passwords, etc.) in debug output\n"
80 " -L = show license (BSD)\n"
81 #ifdef CONFIG_P2P
82 " -m = Configuration file for the P2P Device interface\n"
83 #endif /* CONFIG_P2P */
84 #ifdef CONFIG_MATCH_IFACE
85 " -M = start describing new matching interface\n"
86 #endif /* CONFIG_MATCH_IFACE */
87 " -N = start describing new interface\n"
88 " -o = override driver parameter for new interfaces\n"
89 " -O = override ctrl_interface parameter for new interfaces\n"
90 " -p = driver parameters\n"
91 " -P = PID file\n"
92 " -q = decrease debugging verbosity (-qq even less)\n"
93 #ifdef CONFIG_DEBUG_SYSLOG
94 " -s = log output to syslog instead of stdout\n"
95 #endif /* CONFIG_DEBUG_SYSLOG */
96 " -t = include timestamp in debug messages\n"
97 #ifdef CONFIG_DEBUG_LINUX_TRACING
98 " -T = record to Linux tracing in addition to logging\n"
99 " (records all messages regardless of debug verbosity)\n"
100 #endif /* CONFIG_DEBUG_LINUX_TRACING */
101 #ifdef CONFIG_CTRL_IFACE_DBUS_NEW
102 " -u = enable DBus control interface\n"
103 #endif /* CONFIG_CTRL_IFACE_DBUS_NEW */
104 " -v = show version\n"
105 " -W = wait for a control interface monitor before starting\n");
106
107 printf("example:\n"
108 " wpa_supplicant -Dbsd -iwlan0 -c/etc/wpa_supplicant.conf\n");
109 #endif /* CONFIG_NO_STDOUT_DEBUG */
110 }
111
112
license(void)113 static void license(void)
114 {
115 #ifndef CONFIG_NO_STDOUT_DEBUG
116 printf("%s\n\n%s%s%s%s%s\n",
117 wpa_supplicant_version,
118 wpa_supplicant_full_license1,
119 wpa_supplicant_full_license2,
120 wpa_supplicant_full_license3,
121 wpa_supplicant_full_license4,
122 wpa_supplicant_full_license5);
123 #endif /* CONFIG_NO_STDOUT_DEBUG */
124 }
125
126
wpa_supplicant_fd_workaround(int start)127 static void wpa_supplicant_fd_workaround(int start)
128 {
129 #ifdef __linux__
130 static int fd[3] = { -1, -1, -1 };
131 int i;
132 /* When started from pcmcia-cs scripts, wpa_supplicant might start with
133 * fd 0, 1, and 2 closed. This will cause some issues because many
134 * places in wpa_supplicant are still printing out to stdout. As a
135 * workaround, make sure that fd's 0, 1, and 2 are not used for other
136 * sockets. */
137 if (start) {
138 for (i = 0; i < 3; i++) {
139 fd[i] = open("/dev/null", O_RDWR);
140 if (fd[i] > 2) {
141 close(fd[i]);
142 fd[i] = -1;
143 break;
144 }
145 }
146 } else {
147 for (i = 0; i < 3; i++) {
148 if (fd[i] >= 0) {
149 close(fd[i]);
150 fd[i] = -1;
151 }
152 }
153 }
154 #endif /* __linux__ */
155 }
156
157
158 #ifdef CONFIG_MATCH_IFACE
wpa_supplicant_init_match(struct wpa_global * global)159 static int wpa_supplicant_init_match(struct wpa_global *global)
160 {
161 /*
162 * The assumption is that the first driver is the primary driver and
163 * will handle the arrival / departure of interfaces.
164 */
165 if (wpa_drivers[0]->global_init && !global->drv_priv[0]) {
166 global->drv_priv[0] = wpa_drivers[0]->global_init(global);
167 if (!global->drv_priv[0]) {
168 wpa_printf(MSG_ERROR,
169 "Failed to initialize driver '%s'",
170 wpa_drivers[0]->name);
171 return -1;
172 }
173 }
174
175 return 0;
176 }
177 #endif /* CONFIG_MATCH_IFACE */
178
179
main(int argc,char * argv[])180 int main(int argc, char *argv[])
181 {
182 int c, i;
183 struct wpa_interface *ifaces, *iface;
184 int iface_count, exitcode = -1;
185 struct wpa_params params;
186 struct wpa_global *global;
187
188 if (os_program_init())
189 return -1;
190
191 os_memset(¶ms, 0, sizeof(params));
192 params.wpa_debug_level = MSG_INFO;
193
194 iface = ifaces = os_zalloc(sizeof(struct wpa_interface));
195 if (ifaces == NULL)
196 return -1;
197 iface_count = 1;
198
199 wpa_supplicant_fd_workaround(1);
200
201 #ifdef CONFIG_DRIVER_NDIS
202 void driver_ndis_init_ops(void);
203 driver_ndis_init_ops();
204 #endif /* CONFIG_DRIVER_NDIS */
205
206 for (;;) {
207 c = getopt(argc, argv,
208 "b:Bc:C:D:de:f:g:G:hi:I:KLMm:No:O:p:P:qsTtuvW");
209 if (c < 0)
210 break;
211 switch (c) {
212 case 'b':
213 iface->bridge_ifname = optarg;
214 break;
215 case 'B':
216 params.daemonize++;
217 break;
218 case 'c':
219 iface->confname = optarg;
220 break;
221 case 'C':
222 iface->ctrl_interface = optarg;
223 break;
224 case 'D':
225 iface->driver = optarg;
226 break;
227 case 'd':
228 #ifdef CONFIG_NO_STDOUT_DEBUG
229 printf("Debugging disabled with "
230 "CONFIG_NO_STDOUT_DEBUG=y build time "
231 "option.\n");
232 goto out;
233 #else /* CONFIG_NO_STDOUT_DEBUG */
234 params.wpa_debug_level--;
235 break;
236 #endif /* CONFIG_NO_STDOUT_DEBUG */
237 case 'e':
238 params.entropy_file = optarg;
239 break;
240 #ifdef CONFIG_DEBUG_FILE
241 case 'f':
242 params.wpa_debug_file_path = optarg;
243 break;
244 #endif /* CONFIG_DEBUG_FILE */
245 case 'g':
246 params.ctrl_interface = optarg;
247 break;
248 case 'G':
249 params.ctrl_interface_group = optarg;
250 break;
251 case 'h':
252 usage();
253 exitcode = 0;
254 goto out;
255 case 'i':
256 iface->ifname = optarg;
257 break;
258 case 'I':
259 iface->confanother = optarg;
260 break;
261 case 'K':
262 params.wpa_debug_show_keys++;
263 break;
264 case 'L':
265 license();
266 exitcode = 0;
267 goto out;
268 #ifdef CONFIG_P2P
269 case 'm':
270 params.conf_p2p_dev = optarg;
271 break;
272 #endif /* CONFIG_P2P */
273 case 'o':
274 params.override_driver = optarg;
275 break;
276 case 'O':
277 params.override_ctrl_interface = optarg;
278 break;
279 case 'p':
280 iface->driver_param = optarg;
281 break;
282 case 'P':
283 os_free(params.pid_file);
284 params.pid_file = os_rel2abs_path(optarg);
285 break;
286 case 'q':
287 params.wpa_debug_level++;
288 break;
289 #ifdef CONFIG_DEBUG_SYSLOG
290 case 's':
291 params.wpa_debug_syslog++;
292 break;
293 #endif /* CONFIG_DEBUG_SYSLOG */
294 #ifdef CONFIG_DEBUG_LINUX_TRACING
295 case 'T':
296 params.wpa_debug_tracing++;
297 break;
298 #endif /* CONFIG_DEBUG_LINUX_TRACING */
299 case 't':
300 params.wpa_debug_timestamp++;
301 break;
302 #ifdef CONFIG_CTRL_IFACE_DBUS_NEW
303 case 'u':
304 params.dbus_ctrl_interface = 1;
305 break;
306 #endif /* CONFIG_CTRL_IFACE_DBUS_NEW */
307 case 'v':
308 printf("%s\n", wpa_supplicant_version);
309 exitcode = 0;
310 goto out;
311 case 'W':
312 params.wait_for_monitor++;
313 break;
314 #ifdef CONFIG_MATCH_IFACE
315 case 'M':
316 params.match_iface_count++;
317 iface = os_realloc_array(params.match_ifaces,
318 params.match_iface_count,
319 sizeof(struct wpa_interface));
320 if (!iface)
321 goto out;
322 params.match_ifaces = iface;
323 iface = ¶ms.match_ifaces[params.match_iface_count -
324 1];
325 os_memset(iface, 0, sizeof(*iface));
326 break;
327 #endif /* CONFIG_MATCH_IFACE */
328 case 'N':
329 iface_count++;
330 iface = os_realloc_array(ifaces, iface_count,
331 sizeof(struct wpa_interface));
332 if (iface == NULL)
333 goto out;
334 ifaces = iface;
335 iface = &ifaces[iface_count - 1];
336 os_memset(iface, 0, sizeof(*iface));
337 break;
338 default:
339 usage();
340 exitcode = 0;
341 goto out;
342 }
343 }
344
345 exitcode = 0;
346 global = wpa_supplicant_init(¶ms);
347 if (global == NULL) {
348 wpa_printf(MSG_ERROR, "Failed to initialize wpa_supplicant");
349 exitcode = -1;
350 goto out;
351 } else {
352 wpa_printf(MSG_INFO, "Successfully initialized "
353 "wpa_supplicant");
354 }
355
356 if (fst_global_init()) {
357 wpa_printf(MSG_ERROR, "Failed to initialize FST");
358 exitcode = -1;
359 goto out;
360 }
361
362 #if defined(CONFIG_FST) && defined(CONFIG_CTRL_IFACE)
363 if (!fst_global_add_ctrl(fst_ctrl_cli))
364 wpa_printf(MSG_WARNING, "Failed to add CLI FST ctrl");
365 #endif
366
367 for (i = 0; exitcode == 0 && i < iface_count; i++) {
368 struct wpa_supplicant *wpa_s;
369
370 if ((ifaces[i].confname == NULL &&
371 ifaces[i].ctrl_interface == NULL) ||
372 ifaces[i].ifname == NULL) {
373 if (iface_count == 1 && (params.ctrl_interface ||
374 #ifdef CONFIG_MATCH_IFACE
375 params.match_iface_count ||
376 #endif /* CONFIG_MATCH_IFACE */
377 params.dbus_ctrl_interface))
378 break;
379 usage();
380 exitcode = -1;
381 break;
382 }
383 wpa_s = wpa_supplicant_add_iface(global, &ifaces[i], NULL);
384 if (wpa_s == NULL) {
385 exitcode = -1;
386 break;
387 }
388 }
389
390 #ifdef CONFIG_MATCH_IFACE
391 if (exitcode == 0)
392 exitcode = wpa_supplicant_init_match(global);
393 #endif /* CONFIG_MATCH_IFACE */
394
395 if (exitcode == 0)
396 exitcode = wpa_supplicant_run(global);
397
398 wpa_supplicant_deinit(global);
399
400 fst_global_deinit();
401
402 out:
403 wpa_supplicant_fd_workaround(0);
404 os_free(ifaces);
405 #ifdef CONFIG_MATCH_IFACE
406 os_free(params.match_ifaces);
407 #endif /* CONFIG_MATCH_IFACE */
408 os_free(params.pid_file);
409
410 os_program_deinit();
411
412 return exitcode;
413 }
414