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