1 /* 2 * WPA Supplicant / main() function for UNIX like OSes and MinGW 3 * Copyright (c) 2003-2013, 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 "fst/fst.h" 16 #include "wpa_supplicant_i.h" 17 #include "driver_i.h" 18 #include "p2p_supplicant.h" 19 20 21 static void usage(void) 22 { 23 int i; 24 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 for (i = 0; wpa_drivers[i]; i++) { 57 printf(" %s = %s\n", 58 wpa_drivers[i]->name, 59 wpa_drivers[i]->desc); 60 } 61 62 #ifndef CONFIG_NO_STDOUT_DEBUG 63 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 printf("example:\n" 108 " wpa_supplicant -D%s -iwlan0 -c/etc/wpa_supplicant.conf\n", 109 wpa_drivers[0] ? wpa_drivers[0]->name : "nl80211"); 110 #endif /* CONFIG_NO_STDOUT_DEBUG */ 111 } 112 113 114 static void license(void) 115 { 116 #ifndef CONFIG_NO_STDOUT_DEBUG 117 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 } 126 127 128 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 if (start) { 139 for (i = 0; i < 3; i++) { 140 fd[i] = open("/dev/null", O_RDWR); 141 if (fd[i] > 2) { 142 close(fd[i]); 143 fd[i] = -1; 144 break; 145 } 146 } 147 } else { 148 for (i = 0; i < 3; i++) { 149 if (fd[i] >= 0) { 150 close(fd[i]); 151 fd[i] = -1; 152 } 153 } 154 } 155 #endif /* __linux__ */ 156 } 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 int main(int argc, char *argv[]) 182 { 183 int c, i; 184 struct wpa_interface *ifaces, *iface; 185 int iface_count, exitcode = -1; 186 struct wpa_params params; 187 struct wpa_global *global; 188 189 if (os_program_init()) 190 return -1; 191 192 os_memset(¶ms, 0, sizeof(params)); 193 params.wpa_debug_level = MSG_INFO; 194 195 iface = ifaces = os_zalloc(sizeof(struct wpa_interface)); 196 if (ifaces == NULL) 197 return -1; 198 iface_count = 1; 199 200 wpa_supplicant_fd_workaround(1); 201 202 for (;;) { 203 c = getopt(argc, argv, 204 "b:Bc:C:D:de:f:g:G:hi:I:KLMm:No:O:p:P:qsTtuvW"); 205 if (c < 0) 206 break; 207 switch (c) { 208 case 'b': 209 iface->bridge_ifname = optarg; 210 break; 211 case 'B': 212 params.daemonize++; 213 break; 214 case 'c': 215 iface->confname = optarg; 216 break; 217 case 'C': 218 iface->ctrl_interface = optarg; 219 break; 220 case 'D': 221 iface->driver = optarg; 222 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 params.wpa_debug_level--; 231 break; 232 #endif /* CONFIG_NO_STDOUT_DEBUG */ 233 case 'e': 234 params.entropy_file = optarg; 235 break; 236 #ifdef CONFIG_DEBUG_FILE 237 case 'f': 238 params.wpa_debug_file_path = optarg; 239 break; 240 #endif /* CONFIG_DEBUG_FILE */ 241 case 'g': 242 params.ctrl_interface = optarg; 243 break; 244 case 'G': 245 params.ctrl_interface_group = optarg; 246 break; 247 case 'h': 248 usage(); 249 exitcode = 0; 250 goto out; 251 case 'i': 252 iface->ifname = optarg; 253 break; 254 case 'I': 255 iface->confanother = optarg; 256 break; 257 case 'K': 258 params.wpa_debug_show_keys++; 259 break; 260 case 'L': 261 license(); 262 exitcode = 0; 263 goto out; 264 #ifdef CONFIG_P2P 265 case 'm': 266 params.conf_p2p_dev = optarg; 267 break; 268 #endif /* CONFIG_P2P */ 269 case 'o': 270 params.override_driver = optarg; 271 break; 272 case 'O': 273 params.override_ctrl_interface = optarg; 274 break; 275 case 'p': 276 iface->driver_param = optarg; 277 break; 278 case 'P': 279 os_free(params.pid_file); 280 params.pid_file = os_rel2abs_path(optarg); 281 break; 282 case 'q': 283 params.wpa_debug_level++; 284 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 params.wpa_debug_tracing++; 293 break; 294 #endif /* CONFIG_DEBUG_LINUX_TRACING */ 295 case 't': 296 params.wpa_debug_timestamp++; 297 break; 298 #ifdef CONFIG_DBUS 299 case 'u': 300 params.dbus_ctrl_interface = 1; 301 break; 302 #endif /* CONFIG_DBUS */ 303 case 'v': 304 printf("%s\n", wpa_supplicant_version); 305 exitcode = 0; 306 goto out; 307 case 'W': 308 params.wait_for_monitor++; 309 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 iface_count++; 326 iface = os_realloc_array(ifaces, iface_count, 327 sizeof(struct wpa_interface)); 328 if (iface == NULL) 329 goto out; 330 ifaces = iface; 331 iface = &ifaces[iface_count - 1]; 332 os_memset(iface, 0, sizeof(*iface)); 333 break; 334 default: 335 usage(); 336 exitcode = 0; 337 goto out; 338 } 339 } 340 341 exitcode = 0; 342 global = wpa_supplicant_init(¶ms); 343 if (global == NULL) { 344 wpa_printf(MSG_ERROR, "Failed to initialize wpa_supplicant"); 345 exitcode = -1; 346 goto out; 347 } else { 348 wpa_printf(MSG_INFO, "Successfully initialized " 349 "wpa_supplicant"); 350 } 351 352 if (fst_global_init()) { 353 wpa_printf(MSG_ERROR, "Failed to initialize FST"); 354 exitcode = -1; 355 goto out; 356 } 357 358 #if defined(CONFIG_FST) && defined(CONFIG_CTRL_IFACE) 359 if (!fst_global_add_ctrl(fst_ctrl_cli)) 360 wpa_printf(MSG_WARNING, "Failed to add CLI FST ctrl"); 361 #endif 362 363 for (i = 0; exitcode == 0 && i < iface_count; i++) { 364 struct wpa_supplicant *wpa_s; 365 366 if ((ifaces[i].confname == NULL && 367 ifaces[i].ctrl_interface == NULL) || 368 ifaces[i].ifname == NULL) { 369 if (iface_count == 1 && (params.ctrl_interface || 370 #ifdef CONFIG_MATCH_IFACE 371 params.match_iface_count || 372 #endif /* CONFIG_MATCH_IFACE */ 373 params.dbus_ctrl_interface)) 374 break; 375 usage(); 376 exitcode = -1; 377 break; 378 } 379 wpa_s = wpa_supplicant_add_iface(global, &ifaces[i], NULL); 380 if (wpa_s == NULL) { 381 exitcode = -1; 382 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 if (exitcode == 0) 392 exitcode = wpa_supplicant_run(global); 393 394 wpa_supplicant_deinit(global); 395 396 fst_global_deinit(); 397 398 out: 399 wpa_supplicant_fd_workaround(0); 400 os_free(ifaces); 401 #ifdef CONFIG_MATCH_IFACE 402 os_free(params.match_ifaces); 403 #endif /* CONFIG_MATCH_IFACE */ 404 os_free(params.pid_file); 405 406 os_program_deinit(); 407 408 return exitcode; 409 } 410
