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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 | * | |
0f3d578e JM |
5 | * This software may be distributed under the terms of the BSD license. |
6 | * See README for more details. | |
6fc6879b JM |
7 | */ |
8 | ||
9 | #include "includes.h" | |
10 | #ifdef __linux__ | |
11 | #include <fcntl.h> | |
12 | #endif /* __linux__ */ | |
13 | ||
14 | #include "common.h" | |
15 | #include "wpa_supplicant_i.h" | |
2d5b792d JM |
16 | #include "driver_i.h" |
17 | ||
c5121837 | 18 | extern struct wpa_driver_ops *wpa_drivers[]; |
6fc6879b JM |
19 | |
20 | ||
6fc6879b JM |
21 | static void usage(void) |
22 | { | |
23 | int i; | |
24 | printf("%s\n\n%s\n" | |
25 | "usage:\n" | |
daa70d49 | 26 | " wpa_supplicant [-BddhKLqqstuvW] [-P<pid file>] " |
6fc6879b JM |
27 | "[-g<global ctrl>] \\\n" |
28 | " -i<ifname> -c<config file> [-C<ctrl>] [-D<driver>] " | |
29 | "[-p<driver_param>] \\\n" | |
38e24575 JM |
30 | " [-b<br_ifname>] [-f<debug file>] [-e<entropy file>] " |
31 | "\\\n" | |
d27df100 | 32 | " [-o<override driver>] [-O<override ctrl>] \\\n" |
6fc6879b JM |
33 | " [-N -i<ifname> -c<conf> [-C<ctrl>] " |
34 | "[-D<driver>] \\\n" | |
35 | " [-p<driver_param>] [-b<br_ifname>] ...]\n" | |
36 | "\n" | |
37 | "drivers:\n", | |
38 | wpa_supplicant_version, wpa_supplicant_license); | |
39 | ||
c5121837 | 40 | for (i = 0; wpa_drivers[i]; i++) { |
6fc6879b | 41 | printf(" %s = %s\n", |
c5121837 JM |
42 | wpa_drivers[i]->name, |
43 | wpa_drivers[i]->desc); | |
6fc6879b JM |
44 | } |
45 | ||
46 | #ifndef CONFIG_NO_STDOUT_DEBUG | |
47 | printf("options:\n" | |
48 | " -b = optional bridge interface name\n" | |
49 | " -B = run daemon in the background\n" | |
50 | " -c = Configuration file\n" | |
51 | " -C = ctrl_interface parameter (only used if -c is not)\n" | |
52 | " -i = interface name\n" | |
53 | " -d = increase debugging verbosity (-dd even more)\n" | |
38e24575 JM |
54 | " -D = driver name (can be multiple drivers: nl80211,wext)\n" |
55 | " -e = entropy file\n"); | |
6fc6879b | 56 | #ifdef CONFIG_DEBUG_FILE |
c511c8c6 | 57 | printf(" -f = log output to debug file instead of stdout\n"); |
6fc6879b | 58 | #endif /* CONFIG_DEBUG_FILE */ |
c511c8c6 | 59 | printf(" -g = global ctrl_interface\n" |
daa70d49 SL |
60 | " -K = include keys (passwords, etc.) in debug output\n"); |
61 | #ifdef CONFIG_DEBUG_SYSLOG | |
62 | printf(" -s = log output to syslog instead of stdout\n"); | |
63 | #endif /* CONFIG_DEBUG_SYSLOG */ | |
4f68895e JB |
64 | #ifdef CONFIG_DEBUG_LINUX_TRACING |
65 | printf(" -T = record to Linux tracing in addition to logging\n"); | |
66 | printf(" (records all messages regardless of debug verbosity)\n"); | |
67 | #endif /* CONFIG_DEBUG_LINUX_TRACING */ | |
daa70d49 | 68 | printf(" -t = include timestamp in debug messages\n" |
6fc6879b | 69 | " -h = show this help text\n" |
331f89ff | 70 | " -L = show license (BSD)\n" |
d27df100 JM |
71 | " -o = override driver parameter for new interfaces\n" |
72 | " -O = override ctrl_interface parameter for new interfaces\n" | |
c511c8c6 | 73 | " -p = driver parameters\n" |
6fc6879b | 74 | " -P = PID file\n" |
c511c8c6 | 75 | " -q = decrease debugging verbosity (-qq even less)\n"); |
64bde6d7 | 76 | #ifdef CONFIG_DBUS |
c511c8c6 | 77 | printf(" -u = enable DBus control interface\n"); |
64bde6d7 | 78 | #endif /* CONFIG_DBUS */ |
c511c8c6 | 79 | printf(" -v = show version\n" |
6fc6879b JM |
80 | " -W = wait for a control interface monitor before starting\n" |
81 | " -N = start describing new interface\n"); | |
82 | ||
83 | printf("example:\n" | |
daa70d49 | 84 | " wpa_supplicant -D%s -iwlan0 -c/etc/wpa_supplicant.conf\n", |
c5121837 | 85 | wpa_drivers[i] ? wpa_drivers[i]->name : "wext"); |
6fc6879b JM |
86 | #endif /* CONFIG_NO_STDOUT_DEBUG */ |
87 | } | |
88 | ||
89 | ||
90 | static void license(void) | |
91 | { | |
92 | #ifndef CONFIG_NO_STDOUT_DEBUG | |
93 | printf("%s\n\n%s%s%s%s%s\n", | |
94 | wpa_supplicant_version, | |
95 | wpa_supplicant_full_license1, | |
96 | wpa_supplicant_full_license2, | |
97 | wpa_supplicant_full_license3, | |
98 | wpa_supplicant_full_license4, | |
99 | wpa_supplicant_full_license5); | |
100 | #endif /* CONFIG_NO_STDOUT_DEBUG */ | |
101 | } | |
102 | ||
103 | ||
392824ef | 104 | static void wpa_supplicant_fd_workaround(int start) |
6fc6879b JM |
105 | { |
106 | #ifdef __linux__ | |
392824ef JM |
107 | static int fd[3] = { -1, -1, -1 }; |
108 | int i; | |
6fc6879b JM |
109 | /* When started from pcmcia-cs scripts, wpa_supplicant might start with |
110 | * fd 0, 1, and 2 closed. This will cause some issues because many | |
111 | * places in wpa_supplicant are still printing out to stdout. As a | |
112 | * workaround, make sure that fd's 0, 1, and 2 are not used for other | |
113 | * sockets. */ | |
392824ef JM |
114 | if (start) { |
115 | for (i = 0; i < 3; i++) { | |
116 | fd[i] = open("/dev/null", O_RDWR); | |
117 | if (fd[i] > 2) { | |
118 | close(fd[i]); | |
119 | fd[i] = -1; | |
120 | break; | |
121 | } | |
122 | } | |
123 | } else { | |
124 | for (i = 0; i < 3; i++) { | |
125 | if (fd[i] >= 0) { | |
126 | close(fd[i]); | |
127 | fd[i] = -1; | |
128 | } | |
6fc6879b JM |
129 | } |
130 | } | |
131 | #endif /* __linux__ */ | |
132 | } | |
133 | ||
134 | ||
135 | int main(int argc, char *argv[]) | |
136 | { | |
137 | int c, i; | |
138 | struct wpa_interface *ifaces, *iface; | |
139 | int iface_count, exitcode = -1; | |
140 | struct wpa_params params; | |
141 | struct wpa_global *global; | |
142 | ||
143 | if (os_program_init()) | |
144 | return -1; | |
145 | ||
146 | os_memset(¶ms, 0, sizeof(params)); | |
147 | params.wpa_debug_level = MSG_INFO; | |
148 | ||
149 | iface = ifaces = os_zalloc(sizeof(struct wpa_interface)); | |
150 | if (ifaces == NULL) | |
151 | return -1; | |
152 | iface_count = 1; | |
153 | ||
392824ef | 154 | wpa_supplicant_fd_workaround(1); |
6fc6879b JM |
155 | |
156 | for (;;) { | |
4f68895e JB |
157 | c = getopt(argc, argv, |
158 | "b:Bc:C:D:de:f:g:hi:KLNo:O:p:P:qsTtuvW"); | |
6fc6879b JM |
159 | if (c < 0) |
160 | break; | |
161 | switch (c) { | |
162 | case 'b': | |
163 | iface->bridge_ifname = optarg; | |
164 | break; | |
165 | case 'B': | |
166 | params.daemonize++; | |
167 | break; | |
168 | case 'c': | |
169 | iface->confname = optarg; | |
170 | break; | |
171 | case 'C': | |
172 | iface->ctrl_interface = optarg; | |
173 | break; | |
174 | case 'D': | |
175 | iface->driver = optarg; | |
176 | break; | |
177 | case 'd': | |
178 | #ifdef CONFIG_NO_STDOUT_DEBUG | |
179 | printf("Debugging disabled with " | |
180 | "CONFIG_NO_STDOUT_DEBUG=y build time " | |
181 | "option.\n"); | |
182 | goto out; | |
183 | #else /* CONFIG_NO_STDOUT_DEBUG */ | |
184 | params.wpa_debug_level--; | |
185 | break; | |
186 | #endif /* CONFIG_NO_STDOUT_DEBUG */ | |
38e24575 JM |
187 | case 'e': |
188 | params.entropy_file = optarg; | |
189 | break; | |
6fc6879b JM |
190 | #ifdef CONFIG_DEBUG_FILE |
191 | case 'f': | |
192 | params.wpa_debug_file_path = optarg; | |
193 | break; | |
194 | #endif /* CONFIG_DEBUG_FILE */ | |
195 | case 'g': | |
196 | params.ctrl_interface = optarg; | |
197 | break; | |
198 | case 'h': | |
199 | usage(); | |
200 | exitcode = 0; | |
201 | goto out; | |
202 | case 'i': | |
203 | iface->ifname = optarg; | |
204 | break; | |
205 | case 'K': | |
206 | params.wpa_debug_show_keys++; | |
207 | break; | |
208 | case 'L': | |
209 | license(); | |
210 | exitcode = 0; | |
211 | goto out; | |
d27df100 JM |
212 | case 'o': |
213 | params.override_driver = optarg; | |
214 | break; | |
215 | case 'O': | |
216 | params.override_ctrl_interface = optarg; | |
217 | break; | |
6fc6879b JM |
218 | case 'p': |
219 | iface->driver_param = optarg; | |
220 | break; | |
221 | case 'P': | |
222 | os_free(params.pid_file); | |
223 | params.pid_file = os_rel2abs_path(optarg); | |
224 | break; | |
225 | case 'q': | |
226 | params.wpa_debug_level++; | |
227 | break; | |
daa70d49 SL |
228 | #ifdef CONFIG_DEBUG_SYSLOG |
229 | case 's': | |
230 | params.wpa_debug_syslog++; | |
231 | break; | |
232 | #endif /* CONFIG_DEBUG_SYSLOG */ | |
4f68895e JB |
233 | #ifdef CONFIG_DEBUG_LINUX_TRACING |
234 | case 'T': | |
235 | params.wpa_debug_tracing++; | |
236 | break; | |
237 | #endif /* CONFIG_DEBUG_LINUX_TRACING */ | |
6fc6879b JM |
238 | case 't': |
239 | params.wpa_debug_timestamp++; | |
240 | break; | |
64bde6d7 | 241 | #ifdef CONFIG_DBUS |
6fc6879b JM |
242 | case 'u': |
243 | params.dbus_ctrl_interface = 1; | |
244 | break; | |
64bde6d7 | 245 | #endif /* CONFIG_DBUS */ |
6fc6879b JM |
246 | case 'v': |
247 | printf("%s\n", wpa_supplicant_version); | |
248 | exitcode = 0; | |
249 | goto out; | |
250 | case 'W': | |
251 | params.wait_for_monitor++; | |
252 | break; | |
253 | case 'N': | |
254 | iface_count++; | |
067ffa26 JM |
255 | iface = os_realloc_array(ifaces, iface_count, |
256 | sizeof(struct wpa_interface)); | |
6fc6879b JM |
257 | if (iface == NULL) |
258 | goto out; | |
259 | ifaces = iface; | |
260 | iface = &ifaces[iface_count - 1]; | |
261 | os_memset(iface, 0, sizeof(*iface)); | |
262 | break; | |
263 | default: | |
264 | usage(); | |
265 | exitcode = 0; | |
266 | goto out; | |
267 | } | |
268 | } | |
269 | ||
270 | exitcode = 0; | |
271 | global = wpa_supplicant_init(¶ms); | |
272 | if (global == NULL) { | |
273 | wpa_printf(MSG_ERROR, "Failed to initialize wpa_supplicant"); | |
274 | exitcode = -1; | |
275 | goto out; | |
bae489d2 BG |
276 | } else { |
277 | wpa_printf(MSG_INFO, "Successfully initialized " | |
278 | "wpa_supplicant"); | |
6fc6879b JM |
279 | } |
280 | ||
281 | for (i = 0; exitcode == 0 && i < iface_count; i++) { | |
282 | if ((ifaces[i].confname == NULL && | |
283 | ifaces[i].ctrl_interface == NULL) || | |
284 | ifaces[i].ifname == NULL) { | |
285 | if (iface_count == 1 && (params.ctrl_interface || | |
286 | params.dbus_ctrl_interface)) | |
287 | break; | |
288 | usage(); | |
289 | exitcode = -1; | |
290 | break; | |
291 | } | |
292 | if (wpa_supplicant_add_iface(global, &ifaces[i]) == NULL) | |
293 | exitcode = -1; | |
294 | } | |
295 | ||
296 | if (exitcode == 0) | |
297 | exitcode = wpa_supplicant_run(global); | |
298 | ||
299 | wpa_supplicant_deinit(global); | |
300 | ||
301 | out: | |
392824ef | 302 | wpa_supplicant_fd_workaround(0); |
6fc6879b JM |
303 | os_free(ifaces); |
304 | os_free(params.pid_file); | |
305 | ||
306 | os_program_deinit(); | |
307 | ||
308 | return exitcode; | |
309 | } |