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