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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 | * | |
5 | * This program is free software; you can redistribute it and/or modify | |
6 | * it under the terms of the GNU General Public License version 2 as | |
7 | * published by the Free Software Foundation. | |
8 | * | |
9 | * Alternatively, this software may be distributed under the terms of BSD | |
10 | * license. | |
11 | * | |
12 | * See README and COPYING for more details. | |
13 | */ | |
14 | ||
15 | #include "includes.h" | |
16 | #ifdef __linux__ | |
17 | #include <fcntl.h> | |
18 | #endif /* __linux__ */ | |
19 | ||
20 | #include "common.h" | |
21 | #include "wpa_supplicant_i.h" | |
2d5b792d JM |
22 | #include "driver_i.h" |
23 | ||
c5121837 | 24 | extern struct wpa_driver_ops *wpa_drivers[]; |
6fc6879b JM |
25 | |
26 | ||
6fc6879b JM |
27 | static void usage(void) |
28 | { | |
29 | int i; | |
30 | printf("%s\n\n%s\n" | |
31 | "usage:\n" | |
daa70d49 | 32 | " wpa_supplicant [-BddhKLqqstuvW] [-P<pid file>] " |
6fc6879b JM |
33 | "[-g<global ctrl>] \\\n" |
34 | " -i<ifname> -c<config file> [-C<ctrl>] [-D<driver>] " | |
35 | "[-p<driver_param>] \\\n" | |
36 | " [-b<br_ifname>] [-f<debug file>] \\\n" | |
d27df100 | 37 | " [-o<override driver>] [-O<override ctrl>] \\\n" |
6fc6879b JM |
38 | " [-N -i<ifname> -c<conf> [-C<ctrl>] " |
39 | "[-D<driver>] \\\n" | |
40 | " [-p<driver_param>] [-b<br_ifname>] ...]\n" | |
41 | "\n" | |
42 | "drivers:\n", | |
43 | wpa_supplicant_version, wpa_supplicant_license); | |
44 | ||
c5121837 | 45 | for (i = 0; wpa_drivers[i]; i++) { |
6fc6879b | 46 | printf(" %s = %s\n", |
c5121837 JM |
47 | wpa_drivers[i]->name, |
48 | wpa_drivers[i]->desc); | |
6fc6879b JM |
49 | } |
50 | ||
51 | #ifndef CONFIG_NO_STDOUT_DEBUG | |
52 | printf("options:\n" | |
53 | " -b = optional bridge interface name\n" | |
54 | " -B = run daemon in the background\n" | |
55 | " -c = Configuration file\n" | |
56 | " -C = ctrl_interface parameter (only used if -c is not)\n" | |
57 | " -i = interface name\n" | |
58 | " -d = increase debugging verbosity (-dd even more)\n" | |
c511c8c6 | 59 | " -D = driver name (can be multiple drivers: nl80211,wext)\n"); |
6fc6879b | 60 | #ifdef CONFIG_DEBUG_FILE |
c511c8c6 | 61 | printf(" -f = log output to debug file instead of stdout\n"); |
6fc6879b | 62 | #endif /* CONFIG_DEBUG_FILE */ |
c511c8c6 | 63 | printf(" -g = global ctrl_interface\n" |
daa70d49 SL |
64 | " -K = include keys (passwords, etc.) in debug output\n"); |
65 | #ifdef CONFIG_DEBUG_SYSLOG | |
66 | printf(" -s = log output to syslog instead of stdout\n"); | |
67 | #endif /* CONFIG_DEBUG_SYSLOG */ | |
68 | printf(" -t = include timestamp in debug messages\n" | |
6fc6879b | 69 | " -h = show this help text\n" |
c511c8c6 | 70 | " -L = show license (GPL and 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 | ||
104 | static void wpa_supplicant_fd_workaround(void) | |
105 | { | |
106 | #ifdef __linux__ | |
107 | int s, i; | |
108 | /* When started from pcmcia-cs scripts, wpa_supplicant might start with | |
109 | * fd 0, 1, and 2 closed. This will cause some issues because many | |
110 | * places in wpa_supplicant are still printing out to stdout. As a | |
111 | * workaround, make sure that fd's 0, 1, and 2 are not used for other | |
112 | * sockets. */ | |
113 | for (i = 0; i < 3; i++) { | |
114 | s = open("/dev/null", O_RDWR); | |
115 | if (s > 2) { | |
116 | close(s); | |
117 | break; | |
118 | } | |
119 | } | |
120 | #endif /* __linux__ */ | |
121 | } | |
122 | ||
123 | ||
124 | int main(int argc, char *argv[]) | |
125 | { | |
126 | int c, i; | |
127 | struct wpa_interface *ifaces, *iface; | |
128 | int iface_count, exitcode = -1; | |
129 | struct wpa_params params; | |
130 | struct wpa_global *global; | |
131 | ||
132 | if (os_program_init()) | |
133 | return -1; | |
134 | ||
135 | os_memset(¶ms, 0, sizeof(params)); | |
136 | params.wpa_debug_level = MSG_INFO; | |
137 | ||
138 | iface = ifaces = os_zalloc(sizeof(struct wpa_interface)); | |
139 | if (ifaces == NULL) | |
140 | return -1; | |
141 | iface_count = 1; | |
142 | ||
143 | wpa_supplicant_fd_workaround(); | |
144 | ||
145 | for (;;) { | |
d27df100 | 146 | c = getopt(argc, argv, "b:Bc:C:D:df:g:hi:KLNo:O:p:P:qstuvW"); |
6fc6879b JM |
147 | if (c < 0) |
148 | break; | |
149 | switch (c) { | |
150 | case 'b': | |
151 | iface->bridge_ifname = optarg; | |
152 | break; | |
153 | case 'B': | |
154 | params.daemonize++; | |
155 | break; | |
156 | case 'c': | |
157 | iface->confname = optarg; | |
158 | break; | |
159 | case 'C': | |
160 | iface->ctrl_interface = optarg; | |
161 | break; | |
162 | case 'D': | |
163 | iface->driver = optarg; | |
164 | break; | |
165 | case 'd': | |
166 | #ifdef CONFIG_NO_STDOUT_DEBUG | |
167 | printf("Debugging disabled with " | |
168 | "CONFIG_NO_STDOUT_DEBUG=y build time " | |
169 | "option.\n"); | |
170 | goto out; | |
171 | #else /* CONFIG_NO_STDOUT_DEBUG */ | |
172 | params.wpa_debug_level--; | |
173 | break; | |
174 | #endif /* CONFIG_NO_STDOUT_DEBUG */ | |
175 | #ifdef CONFIG_DEBUG_FILE | |
176 | case 'f': | |
177 | params.wpa_debug_file_path = optarg; | |
178 | break; | |
179 | #endif /* CONFIG_DEBUG_FILE */ | |
180 | case 'g': | |
181 | params.ctrl_interface = optarg; | |
182 | break; | |
183 | case 'h': | |
184 | usage(); | |
185 | exitcode = 0; | |
186 | goto out; | |
187 | case 'i': | |
188 | iface->ifname = optarg; | |
189 | break; | |
190 | case 'K': | |
191 | params.wpa_debug_show_keys++; | |
192 | break; | |
193 | case 'L': | |
194 | license(); | |
195 | exitcode = 0; | |
196 | goto out; | |
d27df100 JM |
197 | case 'o': |
198 | params.override_driver = optarg; | |
199 | break; | |
200 | case 'O': | |
201 | params.override_ctrl_interface = optarg; | |
202 | break; | |
6fc6879b JM |
203 | case 'p': |
204 | iface->driver_param = optarg; | |
205 | break; | |
206 | case 'P': | |
207 | os_free(params.pid_file); | |
208 | params.pid_file = os_rel2abs_path(optarg); | |
209 | break; | |
210 | case 'q': | |
211 | params.wpa_debug_level++; | |
212 | break; | |
daa70d49 SL |
213 | #ifdef CONFIG_DEBUG_SYSLOG |
214 | case 's': | |
215 | params.wpa_debug_syslog++; | |
216 | break; | |
217 | #endif /* CONFIG_DEBUG_SYSLOG */ | |
6fc6879b JM |
218 | case 't': |
219 | params.wpa_debug_timestamp++; | |
220 | break; | |
64bde6d7 | 221 | #ifdef CONFIG_DBUS |
6fc6879b JM |
222 | case 'u': |
223 | params.dbus_ctrl_interface = 1; | |
224 | break; | |
64bde6d7 | 225 | #endif /* CONFIG_DBUS */ |
6fc6879b JM |
226 | case 'v': |
227 | printf("%s\n", wpa_supplicant_version); | |
228 | exitcode = 0; | |
229 | goto out; | |
230 | case 'W': | |
231 | params.wait_for_monitor++; | |
232 | break; | |
233 | case 'N': | |
234 | iface_count++; | |
235 | iface = os_realloc(ifaces, iface_count * | |
236 | sizeof(struct wpa_interface)); | |
237 | if (iface == NULL) | |
238 | goto out; | |
239 | ifaces = iface; | |
240 | iface = &ifaces[iface_count - 1]; | |
241 | os_memset(iface, 0, sizeof(*iface)); | |
242 | break; | |
243 | default: | |
244 | usage(); | |
245 | exitcode = 0; | |
246 | goto out; | |
247 | } | |
248 | } | |
249 | ||
250 | exitcode = 0; | |
251 | global = wpa_supplicant_init(¶ms); | |
252 | if (global == NULL) { | |
253 | wpa_printf(MSG_ERROR, "Failed to initialize wpa_supplicant"); | |
254 | exitcode = -1; | |
255 | goto out; | |
256 | } | |
257 | ||
258 | for (i = 0; exitcode == 0 && i < iface_count; i++) { | |
259 | if ((ifaces[i].confname == NULL && | |
260 | ifaces[i].ctrl_interface == NULL) || | |
261 | ifaces[i].ifname == NULL) { | |
262 | if (iface_count == 1 && (params.ctrl_interface || | |
263 | params.dbus_ctrl_interface)) | |
264 | break; | |
265 | usage(); | |
266 | exitcode = -1; | |
267 | break; | |
268 | } | |
269 | if (wpa_supplicant_add_iface(global, &ifaces[i]) == NULL) | |
270 | exitcode = -1; | |
271 | } | |
272 | ||
273 | if (exitcode == 0) | |
274 | exitcode = wpa_supplicant_run(global); | |
275 | ||
276 | wpa_supplicant_deinit(global); | |
277 | ||
278 | out: | |
279 | os_free(ifaces); | |
280 | os_free(params.pid_file); | |
281 | ||
282 | os_program_deinit(); | |
283 | ||
284 | return exitcode; | |
285 | } |