1 /* 2 * WPA Supplicant / main() function for UNIX like OSes and MinGW 3 * Copyright (c) 2003-2013, Jouni Malinen <j@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_CTRL_IFACE_DBUS_NEW 32 "u" 33 #endif /* CONFIG_CTRL_IFACE_DBUS_NEW */ 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_CTRL_IFACE_DBUS_NEW 102 " -u = enable DBus control interface\n" 103 #endif /* CONFIG_CTRL_IFACE_DBUS_NEW */ 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 #ifdef CONFIG_DRIVER_NDIS 203 void driver_ndis_init_ops(void); 204 driver_ndis_init_ops(); 205 #endif /* CONFIG_DRIVER_NDIS */ 206 207 for (;;) { 208 c = getopt(argc, argv, 209 "b:Bc:C:D:de:f:g:G:hi:I:KLMm:No:O:p:P:qsTtuvW"); 210 if (c < 0) 211 break; 212 switch (c) { 213 case 'b': 214 iface->bridge_ifname = optarg; 215 break; 216 case 'B': 217 params.daemonize++; 218 break; 219 case 'c': 220 iface->confname = optarg; 221 break; 222 case 'C': 223 iface->ctrl_interface = optarg; 224 break; 225 case 'D': 226 iface->driver = optarg; 227 break; 228 case 'd': 229 #ifdef CONFIG_NO_STDOUT_DEBUG 230 printf("Debugging disabled with " 231 "CONFIG_NO_STDOUT_DEBUG=y build time " 232 "option.\n"); 233 goto out; 234 #else /* CONFIG_NO_STDOUT_DEBUG */ 235 params.wpa_debug_level--; 236 break; 237 #endif /* CONFIG_NO_STDOUT_DEBUG */ 238 case 'e': 239 params.entropy_file = optarg; 240 break; 241 #ifdef CONFIG_DEBUG_FILE 242 case 'f': 243 params.wpa_debug_file_path = optarg; 244 break; 245 #endif /* CONFIG_DEBUG_FILE */ 246 case 'g': 247 params.ctrl_interface = optarg; 248 break; 249 case 'G': 250 params.ctrl_interface_group = optarg; 251 break; 252 case 'h': 253 usage(); 254 exitcode = 0; 255 goto out; 256 case 'i': 257 iface->ifname = optarg; 258 break; 259 case 'I': 260 iface->confanother = optarg; 261 break; 262 case 'K': 263 params.wpa_debug_show_keys++; 264 break; 265 case 'L': 266 license(); 267 exitcode = 0; 268 goto out; 269 #ifdef CONFIG_P2P 270 case 'm': 271 params.conf_p2p_dev = optarg; 272 break; 273 #endif /* CONFIG_P2P */ 274 case 'o': 275 params.override_driver = optarg; 276 break; 277 case 'O': 278 params.override_ctrl_interface = optarg; 279 break; 280 case 'p': 281 iface->driver_param = optarg; 282 break; 283 case 'P': 284 os_free(params.pid_file); 285 params.pid_file = os_rel2abs_path(optarg); 286 break; 287 case 'q': 288 params.wpa_debug_level++; 289 break; 290 #ifdef CONFIG_DEBUG_SYSLOG 291 case 's': 292 params.wpa_debug_syslog++; 293 break; 294 #endif /* CONFIG_DEBUG_SYSLOG */ 295 #ifdef CONFIG_DEBUG_LINUX_TRACING 296 case 'T': 297 params.wpa_debug_tracing++; 298 break; 299 #endif /* CONFIG_DEBUG_LINUX_TRACING */ 300 case 't': 301 params.wpa_debug_timestamp++; 302 break; 303 #ifdef CONFIG_CTRL_IFACE_DBUS_NEW 304 case 'u': 305 params.dbus_ctrl_interface = 1; 306 break; 307 #endif /* CONFIG_CTRL_IFACE_DBUS_NEW */ 308 case 'v': 309 printf("%s\n", wpa_supplicant_version); 310 exitcode = 0; 311 goto out; 312 case 'W': 313 params.wait_for_monitor++; 314 break; 315 #ifdef CONFIG_MATCH_IFACE 316 case 'M': 317 params.match_iface_count++; 318 iface = os_realloc_array(params.match_ifaces, 319 params.match_iface_count, 320 sizeof(struct wpa_interface)); 321 if (!iface) 322 goto out; 323 params.match_ifaces = iface; 324 iface = ¶ms.match_ifaces[params.match_iface_count - 325 1]; 326 os_memset(iface, 0, sizeof(*iface)); 327 break; 328 #endif /* CONFIG_MATCH_IFACE */ 329 case 'N': 330 iface_count++; 331 iface = os_realloc_array(ifaces, iface_count, 332 sizeof(struct wpa_interface)); 333 if (iface == NULL) 334 goto out; 335 ifaces = iface; 336 iface = &ifaces[iface_count - 1]; 337 os_memset(iface, 0, sizeof(*iface)); 338 break; 339 default: 340 usage(); 341 exitcode = 0; 342 goto out; 343 } 344 } 345 346 exitcode = 0; 347 global = wpa_supplicant_init(¶ms); 348 if (global == NULL) { 349 wpa_printf(MSG_ERROR, "Failed to initialize wpa_supplicant"); 350 exitcode = -1; 351 goto out; 352 } else { 353 wpa_printf(MSG_INFO, "Successfully initialized " 354 "wpa_supplicant"); 355 } 356 357 if (fst_global_init()) { 358 wpa_printf(MSG_ERROR, "Failed to initialize FST"); 359 exitcode = -1; 360 goto out; 361 } 362 363 #if defined(CONFIG_FST) && defined(CONFIG_CTRL_IFACE) 364 if (!fst_global_add_ctrl(fst_ctrl_cli)) 365 wpa_printf(MSG_WARNING, "Failed to add CLI FST ctrl"); 366 #endif 367 368 for (i = 0; exitcode == 0 && i < iface_count; i++) { 369 struct wpa_supplicant *wpa_s; 370 371 if ((ifaces[i].confname == NULL && 372 ifaces[i].ctrl_interface == NULL) || 373 ifaces[i].ifname == NULL) { 374 if (iface_count == 1 && (params.ctrl_interface || 375 #ifdef CONFIG_MATCH_IFACE 376 params.match_iface_count || 377 #endif /* CONFIG_MATCH_IFACE */ 378 params.dbus_ctrl_interface)) 379 break; 380 usage(); 381 exitcode = -1; 382 break; 383 } 384 wpa_s = wpa_supplicant_add_iface(global, &ifaces[i], NULL); 385 if (wpa_s == NULL) { 386 exitcode = -1; 387 break; 388 } 389 } 390 391 #ifdef CONFIG_MATCH_IFACE 392 if (exitcode == 0) 393 exitcode = wpa_supplicant_init_match(global); 394 #endif /* CONFIG_MATCH_IFACE */ 395 396 if (exitcode == 0) 397 exitcode = wpa_supplicant_run(global); 398 399 wpa_supplicant_deinit(global); 400 401 fst_global_deinit(); 402 403 out: 404 wpa_supplicant_fd_workaround(0); 405 os_free(ifaces); 406 #ifdef CONFIG_MATCH_IFACE 407 os_free(params.match_ifaces); 408 #endif /* CONFIG_MATCH_IFACE */ 409 os_free(params.pid_file); 410 411 os_program_deinit(); 412 413 return exitcode; 414 } 415