1 /*
2 * WPA Supplicant / main() function for UNIX like OSes and MinGW
3 * Copyright (c) 2003-2013, Jouni Malinen <[email protected]>
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 "crypto/crypto.h"
16 #include "fst/fst.h"
17 #include "wpa_supplicant_i.h"
18 #include "driver_i.h"
19 #include "p2p_supplicant.h"
20
21
usage(void)22 static void usage(void)
23 {
24 int i;
25 printf("%s\n\n%s\n"
26 "usage:\n"
27 " wpa_supplicant [-BddhKLqq"
28 #ifdef CONFIG_DEBUG_SYSLOG
29 "s"
30 #endif /* CONFIG_DEBUG_SYSLOG */
31 "t"
32 #ifdef CONFIG_CTRL_IFACE_DBUS_NEW
33 "u"
34 #endif /* CONFIG_CTRL_IFACE_DBUS_NEW */
35 "vW] [-P<pid file>] "
36 "[-g<global ctrl>] \\\n"
37 " [-G<group>] \\\n"
38 " -i<ifname> -c<config file> [-C<ctrl>] [-D<driver>] "
39 "[-p<driver_param>] \\\n"
40 " [-b<br_ifname>] [-e<entropy file>]"
41 #ifdef CONFIG_DEBUG_FILE
42 " [-f<debug file>]"
43 #endif /* CONFIG_DEBUG_FILE */
44 " \\\n"
45 " [-o<override driver>] [-O<override ctrl>] \\\n"
46 " [-N -i<ifname> -c<conf> [-C<ctrl>] "
47 "[-D<driver>] \\\n"
48 #ifdef CONFIG_P2P
49 " [-m<P2P Device config file>] \\\n"
50 #endif /* CONFIG_P2P */
51 " [-p<driver_param>] [-b<br_ifname>] [-I<config file>] "
52 "...]\n"
53 "\n"
54 "drivers:\n",
55 wpa_supplicant_version, wpa_supplicant_license);
56
57 for (i = 0; wpa_drivers[i]; i++) {
58 printf(" %s = %s\n",
59 wpa_drivers[i]->name,
60 wpa_drivers[i]->desc);
61 }
62
63 #ifndef CONFIG_NO_STDOUT_DEBUG
64 printf("options:\n"
65 " -b = optional bridge interface name\n"
66 " -B = run daemon in the background\n"
67 " -c = Configuration file\n"
68 " -C = ctrl_interface parameter (only used if -c is not)\n"
69 " -d = increase debugging verbosity (-dd even more)\n"
70 " -D = driver name (can be multiple drivers: nl80211,wext)\n"
71 " -e = entropy file\n"
72 #ifdef CONFIG_DEBUG_FILE
73 " -f = log output to debug file instead of stdout\n"
74 #endif /* CONFIG_DEBUG_FILE */
75 " -g = global ctrl_interface\n"
76 " -G = global ctrl_interface group\n"
77 " -h = show this help text\n"
78 " -i = interface name\n"
79 " -I = additional configuration file\n"
80 " -K = include keys (passwords, etc.) in debug output\n"
81 " -L = show license (BSD)\n"
82 #ifdef CONFIG_P2P
83 " -m = Configuration file for the P2P Device interface\n"
84 #endif /* CONFIG_P2P */
85 #ifdef CONFIG_MATCH_IFACE
86 " -M = start describing new matching interface\n"
87 #endif /* CONFIG_MATCH_IFACE */
88 " -N = start describing new interface\n"
89 " -o = override driver parameter for new interfaces\n"
90 " -O = override ctrl_interface parameter for new interfaces\n"
91 " -p = driver parameters\n"
92 " -P = PID file\n"
93 " -q = decrease debugging verbosity (-qq even less)\n"
94 #ifdef CONFIG_DEBUG_SYSLOG
95 " -s = log output to syslog instead of stdout\n"
96 #endif /* CONFIG_DEBUG_SYSLOG */
97 " -t = include timestamp in debug messages\n"
98 #ifdef CONFIG_DEBUG_LINUX_TRACING
99 " -T = record to Linux tracing in addition to logging\n"
100 " (records all messages regardless of debug verbosity)\n"
101 #endif /* CONFIG_DEBUG_LINUX_TRACING */
102 #ifdef CONFIG_CTRL_IFACE_DBUS_NEW
103 " -u = enable DBus control interface\n"
104 #endif /* CONFIG_CTRL_IFACE_DBUS_NEW */
105 " -v = show version\n"
106 " -W = wait for a control interface monitor before starting\n");
107
108 printf("example:\n"
109 " wpa_supplicant -D%s -iwlan0 -c/etc/wpa_supplicant.conf\n",
110 wpa_drivers[0] ? wpa_drivers[0]->name : "nl80211");
111 #endif /* CONFIG_NO_STDOUT_DEBUG */
112 }
113
114
license(void)115 static void license(void)
116 {
117 #ifndef CONFIG_NO_STDOUT_DEBUG
118 printf("%s\n\n%s%s%s%s%s\n",
119 wpa_supplicant_version,
120 wpa_supplicant_full_license1,
121 wpa_supplicant_full_license2,
122 wpa_supplicant_full_license3,
123 wpa_supplicant_full_license4,
124 wpa_supplicant_full_license5);
125 #endif /* CONFIG_NO_STDOUT_DEBUG */
126 }
127
128
wpa_supplicant_fd_workaround(int start)129 static void wpa_supplicant_fd_workaround(int start)
130 {
131 #ifdef __linux__
132 static int fd[3] = { -1, -1, -1 };
133 int i;
134 /* When started from pcmcia-cs scripts, wpa_supplicant might start with
135 * fd 0, 1, and 2 closed. This will cause some issues because many
136 * places in wpa_supplicant are still printing out to stdout. As a
137 * workaround, make sure that fd's 0, 1, and 2 are not used for other
138 * sockets. */
139 if (start) {
140 for (i = 0; i < 3; i++) {
141 fd[i] = open("/dev/null", O_RDWR);
142 if (fd[i] > 2) {
143 close(fd[i]);
144 fd[i] = -1;
145 break;
146 }
147 }
148 } else {
149 for (i = 0; i < 3; i++) {
150 if (fd[i] >= 0) {
151 close(fd[i]);
152 fd[i] = -1;
153 }
154 }
155 }
156 #endif /* __linux__ */
157 }
158
159
160 #ifdef CONFIG_MATCH_IFACE
wpa_supplicant_init_match(struct wpa_global * global)161 static int wpa_supplicant_init_match(struct wpa_global *global)
162 {
163 /*
164 * The assumption is that the first driver is the primary driver and
165 * will handle the arrival / departure of interfaces.
166 */
167 if (wpa_drivers[0]->global_init && !global->drv_priv[0]) {
168 global->drv_priv[0] = wpa_drivers[0]->global_init(global);
169 if (!global->drv_priv[0]) {
170 wpa_printf(MSG_ERROR,
171 "Failed to initialize driver '%s'",
172 wpa_drivers[0]->name);
173 return -1;
174 }
175 }
176
177 return 0;
178 }
179 #endif /* CONFIG_MATCH_IFACE */
180
181 // Temporarily allow the fuzzer library to redefine main()
182 // TODO: Remove this flag once mainline supplicant does not include this file
183 #ifndef SUPPLICANT_SERVICE_FUZZER
main(int argc,char * argv[])184 int main(int argc, char *argv[])
185 {
186 int c, i;
187 struct wpa_interface *ifaces, *iface;
188 int iface_count, exitcode = -1;
189 struct wpa_params params;
190 struct wpa_global *global;
191
192 if (os_program_init())
193 return -1;
194
195 os_memset(¶ms, 0, sizeof(params));
196 params.wpa_debug_level = MSG_INFO;
197
198 iface = ifaces = os_zalloc(sizeof(struct wpa_interface));
199 if (ifaces == NULL)
200 return -1;
201 iface_count = 1;
202
203 wpa_supplicant_fd_workaround(1);
204
205 for (;;) {
206 c = getopt(argc, argv,
207 "b:Bc:C:D:de:f:g:G:hi:I:KLMm:No:O:p:P:qsTtuvW");
208 if (c < 0)
209 break;
210 switch (c) {
211 case 'b':
212 iface->bridge_ifname = optarg;
213 break;
214 case 'B':
215 params.daemonize++;
216 break;
217 case 'c':
218 iface->confname = optarg;
219 break;
220 case 'C':
221 iface->ctrl_interface = optarg;
222 break;
223 case 'D':
224 iface->driver = optarg;
225 break;
226 case 'd':
227 #ifdef CONFIG_NO_STDOUT_DEBUG
228 printf("Debugging disabled with "
229 "CONFIG_NO_STDOUT_DEBUG=y build time "
230 "option.\n");
231 goto out;
232 #else /* CONFIG_NO_STDOUT_DEBUG */
233 params.wpa_debug_level--;
234 break;
235 #endif /* CONFIG_NO_STDOUT_DEBUG */
236 case 'e':
237 params.entropy_file = optarg;
238 break;
239 #ifdef CONFIG_DEBUG_FILE
240 case 'f':
241 params.wpa_debug_file_path = optarg;
242 break;
243 #endif /* CONFIG_DEBUG_FILE */
244 case 'g':
245 params.ctrl_interface = optarg;
246 break;
247 case 'G':
248 params.ctrl_interface_group = optarg;
249 break;
250 case 'h':
251 usage();
252 exitcode = 0;
253 goto out;
254 case 'i':
255 iface->ifname = optarg;
256 break;
257 case 'I':
258 iface->confanother = optarg;
259 break;
260 case 'K':
261 params.wpa_debug_show_keys++;
262 break;
263 case 'L':
264 license();
265 exitcode = 0;
266 goto out;
267 #ifdef CONFIG_P2P
268 case 'm':
269 params.conf_p2p_dev = optarg;
270 break;
271 #endif /* CONFIG_P2P */
272 case 'o':
273 params.override_driver = optarg;
274 break;
275 case 'O':
276 params.override_ctrl_interface = optarg;
277 break;
278 case 'p':
279 iface->driver_param = optarg;
280 break;
281 case 'P':
282 os_free(params.pid_file);
283 params.pid_file = os_rel2abs_path(optarg);
284 break;
285 case 'q':
286 params.wpa_debug_level++;
287 break;
288 #ifdef CONFIG_DEBUG_SYSLOG
289 case 's':
290 params.wpa_debug_syslog++;
291 break;
292 #endif /* CONFIG_DEBUG_SYSLOG */
293 #ifdef CONFIG_DEBUG_LINUX_TRACING
294 case 'T':
295 params.wpa_debug_tracing++;
296 break;
297 #endif /* CONFIG_DEBUG_LINUX_TRACING */
298 case 't':
299 params.wpa_debug_timestamp++;
300 break;
301 #ifdef CONFIG_CTRL_IFACE_DBUS_NEW
302 case 'u':
303 params.dbus_ctrl_interface = 1;
304 break;
305 #endif /* CONFIG_CTRL_IFACE_DBUS_NEW */
306 case 'v':
307 printf("%s\n", wpa_supplicant_version);
308 exitcode = 0;
309 goto out;
310 case 'W':
311 params.wait_for_monitor++;
312 break;
313 #ifdef CONFIG_MATCH_IFACE
314 case 'M':
315 params.match_iface_count++;
316 iface = os_realloc_array(params.match_ifaces,
317 params.match_iface_count,
318 sizeof(struct wpa_interface));
319 if (!iface)
320 goto out;
321 params.match_ifaces = iface;
322 iface = ¶ms.match_ifaces[params.match_iface_count -
323 1];
324 os_memset(iface, 0, sizeof(*iface));
325 break;
326 #endif /* CONFIG_MATCH_IFACE */
327 case 'N':
328 iface_count++;
329 iface = os_realloc_array(ifaces, iface_count,
330 sizeof(struct wpa_interface));
331 if (iface == NULL)
332 goto out;
333 ifaces = iface;
334 iface = &ifaces[iface_count - 1];
335 os_memset(iface, 0, sizeof(*iface));
336 break;
337 default:
338 usage();
339 exitcode = 0;
340 goto out;
341 }
342 }
343
344 exitcode = 0;
345 global = wpa_supplicant_init(¶ms);
346 if (global == NULL) {
347 wpa_printf(MSG_ERROR, "Failed to initialize wpa_supplicant");
348 exitcode = -1;
349 goto out;
350 } else {
351 wpa_printf(MSG_INFO, "Successfully initialized "
352 "wpa_supplicant");
353 }
354
355 if (fst_global_init()) {
356 wpa_printf(MSG_ERROR, "Failed to initialize FST");
357 exitcode = -1;
358 goto out;
359 }
360
361 #if defined(CONFIG_FST) && defined(CONFIG_CTRL_IFACE)
362 if (!fst_global_add_ctrl(fst_ctrl_cli))
363 wpa_printf(MSG_WARNING, "Failed to add CLI FST ctrl");
364 #endif
365
366 for (i = 0; exitcode == 0 && i < iface_count; i++) {
367 struct wpa_supplicant *wpa_s;
368
369 if ((ifaces[i].confname == NULL &&
370 ifaces[i].ctrl_interface == NULL) ||
371 ifaces[i].ifname == NULL) {
372 if (iface_count == 1 && (params.ctrl_interface ||
373 #ifdef CONFIG_MATCH_IFACE
374 params.match_iface_count ||
375 #endif /* CONFIG_MATCH_IFACE */
376 params.dbus_ctrl_interface))
377 break;
378 usage();
379 exitcode = -1;
380 break;
381 }
382 wpa_s = wpa_supplicant_add_iface(global, &ifaces[i], NULL);
383 if (wpa_s == NULL) {
384 exitcode = -1;
385 break;
386 }
387 }
388
389 #ifdef CONFIG_MATCH_IFACE
390 if (exitcode == 0)
391 exitcode = wpa_supplicant_init_match(global);
392 #endif /* CONFIG_MATCH_IFACE */
393
394 if (exitcode == 0)
395 exitcode = wpa_supplicant_run(global);
396
397 wpa_supplicant_deinit(global);
398
399 fst_global_deinit();
400
401 out:
402 wpa_supplicant_fd_workaround(0);
403 os_free(ifaces);
404 #ifdef CONFIG_MATCH_IFACE
405 os_free(params.match_ifaces);
406 #endif /* CONFIG_MATCH_IFACE */
407 os_free(params.pid_file);
408
409 crypto_unload();
410 os_program_deinit();
411
412 return exitcode;
413 }
414 #endif /* SUPPLICANT_SERVICE_FUZZER */
415