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: nl80211,wext)\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 -D%s -iwlan0 -c/etc/wpa_supplicant.conf\n",
109 wpa_drivers[0] ? wpa_drivers[0]->name : "nl80211");
110 #endif /* CONFIG_NO_STDOUT_DEBUG */
111 }
112
113
license(void)114 static void license(void)
115 {
116 #ifndef CONFIG_NO_STDOUT_DEBUG
117 printf("%s\n\n%s%s%s%s%s\n",
118 wpa_supplicant_version,
119 wpa_supplicant_full_license1,
120 wpa_supplicant_full_license2,
121 wpa_supplicant_full_license3,
122 wpa_supplicant_full_license4,
123 wpa_supplicant_full_license5);
124 #endif /* CONFIG_NO_STDOUT_DEBUG */
125 }
126
127
wpa_supplicant_fd_workaround(int start)128 static void wpa_supplicant_fd_workaround(int start)
129 {
130 #ifdef __linux__
131 static int fd[3] = { -1, -1, -1 };
132 int i;
133 /* When started from pcmcia-cs scripts, wpa_supplicant might start with
134 * fd 0, 1, and 2 closed. This will cause some issues because many
135 * places in wpa_supplicant are still printing out to stdout. As a
136 * workaround, make sure that fd's 0, 1, and 2 are not used for other
137 * sockets. */
138 if (start) {
139 for (i = 0; i < 3; i++) {
140 fd[i] = open("/dev/null", O_RDWR);
141 if (fd[i] > 2) {
142 close(fd[i]);
143 fd[i] = -1;
144 break;
145 }
146 }
147 } else {
148 for (i = 0; i < 3; i++) {
149 if (fd[i] >= 0) {
150 close(fd[i]);
151 fd[i] = -1;
152 }
153 }
154 }
155 #endif /* __linux__ */
156 }
157
158
159 #ifdef CONFIG_MATCH_IFACE
wpa_supplicant_init_match(struct wpa_global * global)160 static int wpa_supplicant_init_match(struct wpa_global *global)
161 {
162 /*
163 * The assumption is that the first driver is the primary driver and
164 * will handle the arrival / departure of interfaces.
165 */
166 if (wpa_drivers[0]->global_init && !global->drv_priv[0]) {
167 global->drv_priv[0] = wpa_drivers[0]->global_init(global);
168 if (!global->drv_priv[0]) {
169 wpa_printf(MSG_ERROR,
170 "Failed to initialize driver '%s'",
171 wpa_drivers[0]->name);
172 return -1;
173 }
174 }
175
176 return 0;
177 }
178 #endif /* CONFIG_MATCH_IFACE */
179
180
main(int argc,char * argv[])181 int main(int argc, char *argv[])
182 {
183 int c, i;
184 struct wpa_interface *ifaces, *iface;
185 int iface_count, exitcode = -1;
186 struct wpa_params params;
187 struct wpa_global *global;
188
189 if (os_program_init())
190 return -1;
191
192 os_memset(¶ms, 0, sizeof(params));
193 params.wpa_debug_level = MSG_INFO;
194
195 iface = ifaces = os_zalloc(sizeof(struct wpa_interface));
196 if (ifaces == NULL)
197 return -1;
198 iface_count = 1;
199
200 wpa_supplicant_fd_workaround(1);
201
202 #ifdef CONFIG_DRIVER_NDIS
203 void driver_ndis_init_ops(void);
204 driver_ndis_init_ops();
205 #endif /* CONFIG_DRIVER_NDIS */
206
207 for (;;) {
208 c = getopt(argc, argv,
209 "b:Bc:C:D:de:f:g:G:hi:I:KLMm:No:O:p:P:qsTtuvW");
210 if (c < 0)
211 break;
212 switch (c) {
213 case 'b':
214 iface->bridge_ifname = optarg;
215 break;
216 case 'B':
217 params.daemonize++;
218 break;
219 case 'c':
220 iface->confname = optarg;
221 break;
222 case 'C':
223 iface->ctrl_interface = optarg;
224 break;
225 case 'D':
226 iface->driver = optarg;
227 break;
228 case 'd':
229 #ifdef CONFIG_NO_STDOUT_DEBUG
230 printf("Debugging disabled with "
231 "CONFIG_NO_STDOUT_DEBUG=y build time "
232 "option.\n");
233 goto out;
234 #else /* CONFIG_NO_STDOUT_DEBUG */
235 params.wpa_debug_level--;
236 break;
237 #endif /* CONFIG_NO_STDOUT_DEBUG */
238 case 'e':
239 params.entropy_file = optarg;
240 break;
241 #ifdef CONFIG_DEBUG_FILE
242 case 'f':
243 params.wpa_debug_file_path = optarg;
244 break;
245 #endif /* CONFIG_DEBUG_FILE */
246 case 'g':
247 params.ctrl_interface = optarg;
248 break;
249 case 'G':
250 params.ctrl_interface_group = optarg;
251 break;
252 case 'h':
253 usage();
254 exitcode = 0;
255 goto out;
256 case 'i':
257 iface->ifname = optarg;
258 break;
259 case 'I':
260 iface->confanother = optarg;
261 break;
262 case 'K':
263 params.wpa_debug_show_keys++;
264 break;
265 case 'L':
266 license();
267 exitcode = 0;
268 goto out;
269 #ifdef CONFIG_P2P
270 case 'm':
271 params.conf_p2p_dev = optarg;
272 break;
273 #endif /* CONFIG_P2P */
274 case 'o':
275 params.override_driver = optarg;
276 break;
277 case 'O':
278 params.override_ctrl_interface = optarg;
279 break;
280 case 'p':
281 iface->driver_param = optarg;
282 break;
283 case 'P':
284 os_free(params.pid_file);
285 params.pid_file = os_rel2abs_path(optarg);
286 break;
287 case 'q':
288 params.wpa_debug_level++;
289 break;
290 #ifdef CONFIG_DEBUG_SYSLOG
291 case 's':
292 params.wpa_debug_syslog++;
293 break;
294 #endif /* CONFIG_DEBUG_SYSLOG */
295 #ifdef CONFIG_DEBUG_LINUX_TRACING
296 case 'T':
297 params.wpa_debug_tracing++;
298 break;
299 #endif /* CONFIG_DEBUG_LINUX_TRACING */
300 case 't':
301 params.wpa_debug_timestamp++;
302 break;
303 #ifdef CONFIG_CTRL_IFACE_DBUS_NEW
304 case 'u':
305 params.dbus_ctrl_interface = 1;
306 break;
307 #endif /* CONFIG_CTRL_IFACE_DBUS_NEW */
308 case 'v':
309 printf("%s\n", wpa_supplicant_version);
310 exitcode = 0;
311 goto out;
312 case 'W':
313 params.wait_for_monitor++;
314 break;
315 #ifdef CONFIG_MATCH_IFACE
316 case 'M':
317 params.match_iface_count++;
318 iface = os_realloc_array(params.match_ifaces,
319 params.match_iface_count,
320 sizeof(struct wpa_interface));
321 if (!iface)
322 goto out;
323 params.match_ifaces = iface;
324 iface = ¶ms.match_ifaces[params.match_iface_count -
325 1];
326 os_memset(iface, 0, sizeof(*iface));
327 break;
328 #endif /* CONFIG_MATCH_IFACE */
329 case 'N':
330 iface_count++;
331 iface = os_realloc_array(ifaces, iface_count,
332 sizeof(struct wpa_interface));
333 if (iface == NULL)
334 goto out;
335 ifaces = iface;
336 iface = &ifaces[iface_count - 1];
337 os_memset(iface, 0, sizeof(*iface));
338 break;
339 default:
340 usage();
341 exitcode = 0;
342 goto out;
343 }
344 }
345
346 exitcode = 0;
347 global = wpa_supplicant_init(¶ms);
348 if (global == NULL) {
349 wpa_printf(MSG_ERROR, "Failed to initialize wpa_supplicant");
350 exitcode = -1;
351 goto out;
352 } else {
353 wpa_printf(MSG_INFO, "Successfully initialized "
354 "wpa_supplicant");
355 }
356
357 if (fst_global_init()) {
358 wpa_printf(MSG_ERROR, "Failed to initialize FST");
359 exitcode = -1;
360 goto out;
361 }
362
363 #if defined(CONFIG_FST) && defined(CONFIG_CTRL_IFACE)
364 if (!fst_global_add_ctrl(fst_ctrl_cli))
365 wpa_printf(MSG_WARNING, "Failed to add CLI FST ctrl");
366 #endif
367
368 for (i = 0; exitcode == 0 && i < iface_count; i++) {
369 struct wpa_supplicant *wpa_s;
370
371 if ((ifaces[i].confname == NULL &&
372 ifaces[i].ctrl_interface == NULL) ||
373 ifaces[i].ifname == NULL) {
374 if (iface_count == 1 && (params.ctrl_interface ||
375 #ifdef CONFIG_MATCH_IFACE
376 params.match_iface_count ||
377 #endif /* CONFIG_MATCH_IFACE */
378 params.dbus_ctrl_interface))
379 break;
380 usage();
381 exitcode = -1;
382 break;
383 }
384 wpa_s = wpa_supplicant_add_iface(global, &ifaces[i], NULL);
385 if (wpa_s == NULL) {
386 exitcode = -1;
387 break;
388 }
389 }
390
391 #ifdef CONFIG_MATCH_IFACE
392 if (exitcode == 0)
393 exitcode = wpa_supplicant_init_match(global);
394 #endif /* CONFIG_MATCH_IFACE */
395
396 if (exitcode == 0)
397 exitcode = wpa_supplicant_run(global);
398
399 wpa_supplicant_deinit(global);
400
401 fst_global_deinit();
402
403 out:
404 wpa_supplicant_fd_workaround(0);
405 os_free(ifaces);
406 #ifdef CONFIG_MATCH_IFACE
407 os_free(params.match_ifaces);
408 #endif /* CONFIG_MATCH_IFACE */
409 os_free(params.pid_file);
410
411 os_program_deinit();
412
413 return exitcode;
414 }
415