1 /* 2 * WPA Supplicant / main() function for UNIX like OSes and MinGW 3 * Copyright (c) 2003-2007, Jouni Malinen <j (at) 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" 22 23 24 extern const char *wpa_supplicant_version; 25 extern const char *wpa_supplicant_license; 26 #ifndef CONFIG_NO_STDOUT_DEBUG 27 extern const char *wpa_supplicant_full_license1; 28 extern const char *wpa_supplicant_full_license2; 29 extern const char *wpa_supplicant_full_license3; 30 extern const char *wpa_supplicant_full_license4; 31 extern const char *wpa_supplicant_full_license5; 32 #endif /* CONFIG_NO_STDOUT_DEBUG */ 33 34 extern struct wpa_driver_ops *wpa_supplicant_drivers[]; 35 36 37 static void usage(void) 38 { 39 int i; 40 printf("%s\n\n%s\n" 41 "usage:\n" 42 " wpa_supplicant [-BddhKLqqtuvwW] [-P<pid file>] " 43 "[-g<global ctrl>] \\\n" 44 " -i<ifname> -c<config file> [-C<ctrl>] [-D<driver>] " 45 "[-p<driver_param>] \\\n" 46 " [-b<br_ifname>] [-f<debug file>] \\\n" 47 " [-N -i<ifname> -c<conf> [-C<ctrl>] " 48 "[-D<driver>] \\\n" 49 " [-p<driver_param>] [-b<br_ifname>] ...]\n" 50 "\n" 51 "drivers:\n", 52 wpa_supplicant_version, wpa_supplicant_license); 53 54 for (i = 0; wpa_supplicant_drivers[i]; i++) { 55 printf(" %s = %s\n", 56 wpa_supplicant_drivers[i]->name, 57 wpa_supplicant_drivers[i]->desc); 58 } 59 60 #ifndef CONFIG_NO_STDOUT_DEBUG 61 printf("options:\n" 62 " -b = optional bridge interface name\n" 63 " -B = run daemon in the background\n" 64 " -c = Configuration file\n" 65 " -C = ctrl_interface parameter (only used if -c is not)\n" 66 " -i = interface name\n" 67 " -d = increase debugging verbosity (-dd even more)\n" 68 " -D = driver name\n" 69 #ifdef CONFIG_DEBUG_FILE 70 " -f = log output to debug file instead of stdout\n" 71 #endif /* CONFIG_DEBUG_FILE */ 72 " -g = global ctrl_interface\n" 73 " -K = include keys (passwords, etc.) in debug output\n" 74 " -t = include timestamp in debug messages\n" 75 " -h = show this help text\n" 76 " -L = show license (GPL and BSD)\n"); 77 printf(" -p = driver parameters\n" 78 " -P = PID file\n" 79 " -q = decrease debugging verbosity (-qq even less)\n" 80 #ifdef CONFIG_CTRL_IFACE_DBUS 81 " -u = enable DBus control interface\n" 82 #endif /* CONFIG_CTRL_IFACE_DBUS */ 83 " -v = show version\n" 84 " -w = wait for interface to be added, if needed\n" 85 " -W = wait for a control interface monitor before starting\n" 86 " -N = start describing new interface\n"); 87 88 printf("example:\n" 89 " wpa_supplicant -Dwext -iwlan0 -c/etc/wpa_supplicant.conf\n"); 90 #endif /* CONFIG_NO_STDOUT_DEBUG */ 91 } 92 93 94 static void license(void) 95 { 96 #ifndef CONFIG_NO_STDOUT_DEBUG 97 printf("%s\n\n%s%s%s%s%s\n", 98 wpa_supplicant_version, 99 wpa_supplicant_full_license1, 100 wpa_supplicant_full_license2, 101 wpa_supplicant_full_license3, 102 wpa_supplicant_full_license4, 103 wpa_supplicant_full_license5); 104 #endif /* CONFIG_NO_STDOUT_DEBUG */ 105 } 106 107 108 static void wpa_supplicant_fd_workaround(void) 109 { 110 #ifdef __linux__ 111 int s, i; 112 /* When started from pcmcia-cs scripts, wpa_supplicant might start with 113 * fd 0, 1, and 2 closed. This will cause some issues because many 114 * places in wpa_supplicant are still printing out to stdout. As a 115 * workaround, make sure that fd's 0, 1, and 2 are not used for other 116 * sockets. */ 117 for (i = 0; i < 3; i++) { 118 s = open("/dev/null", O_RDWR); 119 if (s > 2) { 120 close(s); 121 break; 122 } 123 } 124 #endif /* __linux__ */ 125 } 126 127 128 int main(int argc, char *argv[]) 129 { 130 int c, i; 131 struct wpa_interface *ifaces, *iface; 132 int iface_count, exitcode = -1; 133 struct wpa_params params; 134 struct wpa_global *global; 135 136 if (os_program_init()) 137 return -1; 138 139 os_memset(¶ms, 0, sizeof(params)); 140 params.wpa_debug_level = MSG_INFO; 141 142 iface = ifaces = os_zalloc(sizeof(struct wpa_interface)); 143 if (ifaces == NULL) 144 return -1; 145 iface_count = 1; 146 147 wpa_supplicant_fd_workaround(); 148 149 for (;;) { 150 c = getopt(argc, argv, "b:Bc:C:D:df:g:hi:KLNp:P:qtuvwW"); 151 if (c < 0) 152 break; 153 switch (c) { 154 case 'b': 155 iface->bridge_ifname = optarg; 156 break; 157 case 'B': 158 params.daemonize++; 159 break; 160 case 'c': 161 iface->confname = optarg; 162 break; 163 case 'C': 164 iface->ctrl_interface = optarg; 165 break; 166 case 'D': 167 iface->driver = optarg; 168 break; 169 case 'd': 170 #ifdef CONFIG_NO_STDOUT_DEBUG 171 printf("Debugging disabled with " 172 "CONFIG_NO_STDOUT_DEBUG=y build time " 173 "option.\n"); 174 goto out; 175 #else /* CONFIG_NO_STDOUT_DEBUG */ 176 params.wpa_debug_level--; 177 break; 178 #endif /* CONFIG_NO_STDOUT_DEBUG */ 179 #ifdef CONFIG_DEBUG_FILE 180 case 'f': 181 params.wpa_debug_file_path = optarg; 182 break; 183 #endif /* CONFIG_DEBUG_FILE */ 184 case 'g': 185 params.ctrl_interface = optarg; 186 break; 187 case 'h': 188 usage(); 189 exitcode = 0; 190 goto out; 191 case 'i': 192 iface->ifname = optarg; 193 break; 194 case 'K': 195 params.wpa_debug_show_keys++; 196 break; 197 case 'L': 198 license(); 199 exitcode = 0; 200 goto out; 201 case 'p': 202 iface->driver_param = optarg; 203 break; 204 case 'P': 205 os_free(params.pid_file); 206 params.pid_file = os_rel2abs_path(optarg); 207 break; 208 case 'q': 209 params.wpa_debug_level++; 210 break; 211 case 't': 212 params.wpa_debug_timestamp++; 213 break; 214 #ifdef CONFIG_CTRL_IFACE_DBUS 215 case 'u': 216 params.dbus_ctrl_interface = 1; 217 break; 218 #endif /* CONFIG_CTRL_IFACE_DBUS */ 219 case 'v': 220 printf("%s\n", wpa_supplicant_version); 221 exitcode = 0; 222 goto out; 223 case 'w': 224 params.wait_for_interface++; 225 break; 226 case 'W': 227 params.wait_for_monitor++; 228 break; 229 case 'N': 230 iface_count++; 231 iface = os_realloc(ifaces, iface_count * 232 sizeof(struct wpa_interface)); 233 if (iface == NULL) 234 goto out; 235 ifaces = iface; 236 iface = &ifaces[iface_count - 1]; 237 os_memset(iface, 0, sizeof(*iface)); 238 break; 239 default: 240 usage(); 241 exitcode = 0; 242 goto out; 243 } 244 } 245 246 exitcode = 0; 247 global = wpa_supplicant_init(¶ms); 248 if (global == NULL) { 249 printf("Failed to initialize wpa_supplicant\n"); 250 exitcode = -1; 251 goto out; 252 } 253 254 for (i = 0; exitcode == 0 && i < iface_count; i++) { 255 if ((ifaces[i].confname == NULL && 256 ifaces[i].ctrl_interface == NULL) || 257 ifaces[i].ifname == NULL) { 258 if (iface_count == 1 && (params.ctrl_interface || 259 params.dbus_ctrl_interface)) 260 break; 261 usage(); 262 exitcode = -1; 263 break; 264 } 265 if (wpa_supplicant_add_iface(global, &ifaces[i]) == NULL) 266 exitcode = -1; 267 } 268 269 if (exitcode == 0) 270 exitcode = wpa_supplicant_run(global); 271 272 wpa_supplicant_deinit(global); 273 274 out: 275 os_free(ifaces); 276 os_free(params.pid_file); 277 278 os_program_deinit(); 279 280 return exitcode; 281 } 282
