Line data Source code
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 :
21 25 : static void usage(void)
22 : {
23 : int i;
24 25 : 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_DBUS
32 : "u"
33 : #endif /* CONFIG_DBUS */
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 :
56 100 : for (i = 0; wpa_drivers[i]; i++) {
57 150 : printf(" %s = %s\n",
58 75 : wpa_drivers[i]->name,
59 75 : wpa_drivers[i]->desc);
60 : }
61 :
62 : #ifndef CONFIG_NO_STDOUT_DEBUG
63 25 : 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_DBUS
102 : " -u = enable DBus control interface\n"
103 : #endif /* CONFIG_DBUS */
104 : " -v = show version\n"
105 : " -W = wait for a control interface monitor before starting\n");
106 :
107 50 : printf("example:\n"
108 : " wpa_supplicant -D%s -iwlan0 -c/etc/wpa_supplicant.conf\n",
109 50 : wpa_drivers[0] ? wpa_drivers[0]->name : "nl80211");
110 : #endif /* CONFIG_NO_STDOUT_DEBUG */
111 25 : }
112 :
113 :
114 6 : static void license(void)
115 : {
116 : #ifndef CONFIG_NO_STDOUT_DEBUG
117 6 : 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 6 : }
126 :
127 :
128 146 : 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. */
138 146 : if (start) {
139 73 : for (i = 0; i < 3; i++) {
140 73 : fd[i] = open("/dev/null", O_RDWR);
141 73 : if (fd[i] > 2) {
142 73 : close(fd[i]);
143 73 : fd[i] = -1;
144 73 : break;
145 : }
146 : }
147 : } else {
148 292 : for (i = 0; i < 3; i++) {
149 219 : if (fd[i] >= 0) {
150 0 : close(fd[i]);
151 0 : fd[i] = -1;
152 : }
153 : }
154 : }
155 : #endif /* __linux__ */
156 146 : }
157 :
158 :
159 : #ifdef CONFIG_MATCH_IFACE
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 :
181 73 : int main(int argc, char *argv[])
182 : {
183 : int c, i;
184 : struct wpa_interface *ifaces, *iface;
185 73 : int iface_count, exitcode = -1;
186 : struct wpa_params params;
187 : struct wpa_global *global;
188 :
189 73 : if (os_program_init())
190 0 : return -1;
191 :
192 73 : os_memset(¶ms, 0, sizeof(params));
193 73 : params.wpa_debug_level = MSG_INFO;
194 :
195 73 : iface = ifaces = os_zalloc(sizeof(struct wpa_interface));
196 73 : if (ifaces == NULL)
197 0 : return -1;
198 73 : iface_count = 1;
199 :
200 73 : wpa_supplicant_fd_workaround(1);
201 :
202 : for (;;) {
203 567 : c = getopt(argc, argv,
204 : "b:Bc:C:D:de:f:g:G:hi:I:KLMm:No:O:p:P:qsTtuvW");
205 567 : if (c < 0)
206 49 : break;
207 518 : switch (c) {
208 : case 'b':
209 6 : iface->bridge_ifname = optarg;
210 6 : break;
211 : case 'B':
212 18 : params.daemonize++;
213 18 : break;
214 : case 'c':
215 41 : iface->confname = optarg;
216 41 : break;
217 : case 'C':
218 6 : iface->ctrl_interface = optarg;
219 6 : break;
220 : case 'D':
221 41 : iface->driver = optarg;
222 41 : break;
223 : case 'd':
224 : #ifdef CONFIG_NO_STDOUT_DEBUG
225 : printf("Debugging disabled with "
226 : "CONFIG_NO_STDOUT_DEBUG=y build time "
227 : "option.\n");
228 : goto out;
229 : #else /* CONFIG_NO_STDOUT_DEBUG */
230 84 : params.wpa_debug_level--;
231 84 : break;
232 : #endif /* CONFIG_NO_STDOUT_DEBUG */
233 : case 'e':
234 6 : params.entropy_file = optarg;
235 6 : break;
236 : #ifdef CONFIG_DEBUG_FILE
237 : case 'f':
238 36 : params.wpa_debug_file_path = optarg;
239 36 : break;
240 : #endif /* CONFIG_DEBUG_FILE */
241 : case 'g':
242 35 : params.ctrl_interface = optarg;
243 35 : break;
244 : case 'G':
245 24 : params.ctrl_interface_group = optarg;
246 24 : break;
247 : case 'h':
248 6 : usage();
249 6 : exitcode = 0;
250 6 : goto out;
251 : case 'i':
252 41 : iface->ifname = optarg;
253 41 : break;
254 : case 'I':
255 6 : iface->confanother = optarg;
256 6 : break;
257 : case 'K':
258 24 : params.wpa_debug_show_keys++;
259 24 : break;
260 : case 'L':
261 6 : license();
262 6 : exitcode = 0;
263 6 : goto out;
264 : #ifdef CONFIG_P2P
265 : case 'm':
266 6 : params.conf_p2p_dev = optarg;
267 6 : break;
268 : #endif /* CONFIG_P2P */
269 : case 'o':
270 6 : params.override_driver = optarg;
271 6 : break;
272 : case 'O':
273 6 : params.override_ctrl_interface = optarg;
274 6 : break;
275 : case 'p':
276 6 : iface->driver_param = optarg;
277 6 : break;
278 : case 'P':
279 18 : os_free(params.pid_file);
280 18 : params.pid_file = os_rel2abs_path(optarg);
281 18 : break;
282 : case 'q':
283 6 : params.wpa_debug_level++;
284 6 : break;
285 : #ifdef CONFIG_DEBUG_SYSLOG
286 : case 's':
287 : params.wpa_debug_syslog++;
288 : break;
289 : #endif /* CONFIG_DEBUG_SYSLOG */
290 : #ifdef CONFIG_DEBUG_LINUX_TRACING
291 : case 'T':
292 7 : params.wpa_debug_tracing++;
293 7 : break;
294 : #endif /* CONFIG_DEBUG_LINUX_TRACING */
295 : case 't':
296 35 : params.wpa_debug_timestamp++;
297 35 : break;
298 : #ifdef CONFIG_DBUS
299 : case 'u':
300 12 : params.dbus_ctrl_interface = 1;
301 12 : break;
302 : #endif /* CONFIG_DBUS */
303 : case 'v':
304 6 : printf("%s\n", wpa_supplicant_version);
305 6 : exitcode = 0;
306 6 : goto out;
307 : case 'W':
308 7 : params.wait_for_monitor++;
309 7 : break;
310 : #ifdef CONFIG_MATCH_IFACE
311 : case 'M':
312 : params.match_iface_count++;
313 : iface = os_realloc_array(params.match_ifaces,
314 : params.match_iface_count,
315 : sizeof(struct wpa_interface));
316 : if (!iface)
317 : goto out;
318 : params.match_ifaces = iface;
319 : iface = ¶ms.match_ifaces[params.match_iface_count -
320 : 1];
321 : os_memset(iface, 0, sizeof(*iface));
322 : break;
323 : #endif /* CONFIG_MATCH_IFACE */
324 : case 'N':
325 17 : iface_count++;
326 17 : iface = os_realloc_array(ifaces, iface_count,
327 : sizeof(struct wpa_interface));
328 17 : if (iface == NULL)
329 0 : goto out;
330 17 : ifaces = iface;
331 17 : iface = &ifaces[iface_count - 1];
332 17 : os_memset(iface, 0, sizeof(*iface));
333 17 : break;
334 : default:
335 6 : usage();
336 6 : exitcode = 0;
337 6 : goto out;
338 : }
339 494 : }
340 :
341 49 : exitcode = 0;
342 49 : global = wpa_supplicant_init(¶ms);
343 49 : if (global == NULL) {
344 0 : wpa_printf(MSG_ERROR, "Failed to initialize wpa_supplicant");
345 0 : exitcode = -1;
346 0 : goto out;
347 : } else {
348 49 : wpa_printf(MSG_INFO, "Successfully initialized "
349 : "wpa_supplicant");
350 : }
351 :
352 49 : if (fst_global_init()) {
353 0 : wpa_printf(MSG_ERROR, "Failed to initialize FST");
354 0 : exitcode = -1;
355 0 : goto out;
356 : }
357 :
358 : #if defined(CONFIG_FST) && defined(CONFIG_CTRL_IFACE)
359 49 : if (!fst_global_add_ctrl(fst_ctrl_cli))
360 0 : wpa_printf(MSG_WARNING, "Failed to add CLI FST ctrl");
361 : #endif
362 :
363 81 : for (i = 0; exitcode == 0 && i < iface_count; i++) {
364 : struct wpa_supplicant *wpa_s;
365 :
366 79 : if ((ifaces[i].confname == NULL &&
367 60 : ifaces[i].ctrl_interface == NULL) ||
368 41 : ifaces[i].ifname == NULL) {
369 32 : if (iface_count == 1 && (params.ctrl_interface ||
370 : #ifdef CONFIG_MATCH_IFACE
371 : params.match_iface_count ||
372 : #endif /* CONFIG_MATCH_IFACE */
373 13 : params.dbus_ctrl_interface))
374 : break;
375 13 : usage();
376 13 : exitcode = -1;
377 13 : break;
378 : }
379 41 : wpa_s = wpa_supplicant_add_iface(global, &ifaces[i], NULL);
380 41 : if (wpa_s == NULL) {
381 9 : exitcode = -1;
382 9 : break;
383 : }
384 : }
385 :
386 : #ifdef CONFIG_MATCH_IFACE
387 : if (exitcode == 0)
388 : exitcode = wpa_supplicant_init_match(global);
389 : #endif /* CONFIG_MATCH_IFACE */
390 :
391 49 : if (exitcode == 0)
392 27 : exitcode = wpa_supplicant_run(global);
393 :
394 49 : wpa_supplicant_deinit(global);
395 :
396 49 : fst_global_deinit();
397 :
398 : out:
399 73 : wpa_supplicant_fd_workaround(0);
400 73 : os_free(ifaces);
401 : #ifdef CONFIG_MATCH_IFACE
402 : os_free(params.match_ifaces);
403 : #endif /* CONFIG_MATCH_IFACE */
404 73 : os_free(params.pid_file);
405 :
406 73 : os_program_deinit();
407 :
408 73 : return exitcode;
409 : }
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