1189251Ssam/* 2189251Ssam * WPA Supplicant / main() function for UNIX like OSes and MinGW 3189251Ssam * Copyright (c) 2003-2007, Jouni Malinen <j@w1.fi> 4189251Ssam * 5252726Srpaulo * This software may be distributed under the terms of the BSD license. 6252726Srpaulo * See README for more details. 7189251Ssam */ 8189251Ssam 9189251Ssam#include "includes.h" 10189251Ssam#ifdef __linux__ 11189251Ssam#include <fcntl.h> 12189251Ssam#endif /* __linux__ */ 13189251Ssam 14189251Ssam#include "common.h" 15189251Ssam#include "wpa_supplicant_i.h" 16214734Srpaulo#include "driver_i.h" 17189251Ssam 18214734Srpauloextern struct wpa_driver_ops *wpa_drivers[]; 19189251Ssam 20214734Srpaulo 21189251Ssamstatic void usage(void) 22189251Ssam{ 23189251Ssam int i; 24189251Ssam printf("%s\n\n%s\n" 25189251Ssam "usage:\n" 26214734Srpaulo " wpa_supplicant [-BddhKLqqstuvW] [-P<pid file>] " 27189251Ssam "[-g<global ctrl>] \\\n" 28189251Ssam " -i<ifname> -c<config file> [-C<ctrl>] [-D<driver>] " 29189251Ssam "[-p<driver_param>] \\\n" 30252726Srpaulo " [-b<br_ifname>] [-f<debug file>] [-e<entropy file>] " 31252726Srpaulo "\\\n" 32214734Srpaulo " [-o<override driver>] [-O<override ctrl>] \\\n" 33189251Ssam " [-N -i<ifname> -c<conf> [-C<ctrl>] " 34189251Ssam "[-D<driver>] \\\n" 35189251Ssam " [-p<driver_param>] [-b<br_ifname>] ...]\n" 36189251Ssam "\n" 37189251Ssam "drivers:\n", 38189251Ssam wpa_supplicant_version, wpa_supplicant_license); 39189251Ssam 40214734Srpaulo for (i = 0; wpa_drivers[i]; i++) { 41189251Ssam printf(" %s = %s\n", 42214734Srpaulo wpa_drivers[i]->name, 43214734Srpaulo wpa_drivers[i]->desc); 44189251Ssam } 45189251Ssam 46189251Ssam#ifndef CONFIG_NO_STDOUT_DEBUG 47189251Ssam printf("options:\n" 48189251Ssam " -b = optional bridge interface name\n" 49189251Ssam " -B = run daemon in the background\n" 50189251Ssam " -c = Configuration file\n" 51189251Ssam " -C = ctrl_interface parameter (only used if -c is not)\n" 52189251Ssam " -i = interface name\n" 53189251Ssam " -d = increase debugging verbosity (-dd even more)\n" 54252726Srpaulo " -D = driver name (can be multiple drivers: nl80211,wext)\n" 55252726Srpaulo " -e = entropy file\n"); 56189251Ssam#ifdef CONFIG_DEBUG_FILE 57214734Srpaulo printf(" -f = log output to debug file instead of stdout\n"); 58189251Ssam#endif /* CONFIG_DEBUG_FILE */ 59214734Srpaulo printf(" -g = global ctrl_interface\n" 60214734Srpaulo " -K = include keys (passwords, etc.) in debug output\n"); 61189262Ssam#ifdef CONFIG_DEBUG_SYSLOG 62214734Srpaulo printf(" -s = log output to syslog instead of stdout\n"); 63189262Ssam#endif /* CONFIG_DEBUG_SYSLOG */ 64252726Srpaulo#ifdef CONFIG_DEBUG_LINUX_TRACING 65252726Srpaulo printf(" -T = record to Linux tracing in addition to logging\n"); 66252726Srpaulo printf(" (records all messages regardless of debug verbosity)\n"); 67252726Srpaulo#endif /* CONFIG_DEBUG_LINUX_TRACING */ 68214734Srpaulo printf(" -t = include timestamp in debug messages\n" 69189251Ssam " -h = show this help text\n" 70252726Srpaulo " -L = show license (BSD)\n" 71214734Srpaulo " -o = override driver parameter for new interfaces\n" 72214734Srpaulo " -O = override ctrl_interface parameter for new interfaces\n" 73214734Srpaulo " -p = driver parameters\n" 74189251Ssam " -P = PID file\n" 75214734Srpaulo " -q = decrease debugging verbosity (-qq even less)\n"); 76214734Srpaulo#ifdef CONFIG_DBUS 77214734Srpaulo printf(" -u = enable DBus control interface\n"); 78214734Srpaulo#endif /* CONFIG_DBUS */ 79214734Srpaulo printf(" -v = show version\n" 80189251Ssam " -W = wait for a control interface monitor before starting\n" 81189251Ssam " -N = start describing new interface\n"); 82189251Ssam 83189251Ssam printf("example:\n" 84189262Ssam " wpa_supplicant -D%s -iwlan0 -c/etc/wpa_supplicant.conf\n", 85214734Srpaulo wpa_drivers[i] ? wpa_drivers[i]->name : "wext"); 86189251Ssam#endif /* CONFIG_NO_STDOUT_DEBUG */ 87189251Ssam} 88189251Ssam 89189251Ssam 90189251Ssamstatic void license(void) 91189251Ssam{ 92189251Ssam#ifndef CONFIG_NO_STDOUT_DEBUG 93189251Ssam printf("%s\n\n%s%s%s%s%s\n", 94189251Ssam wpa_supplicant_version, 95189251Ssam wpa_supplicant_full_license1, 96189251Ssam wpa_supplicant_full_license2, 97189251Ssam wpa_supplicant_full_license3, 98189251Ssam wpa_supplicant_full_license4, 99189251Ssam wpa_supplicant_full_license5); 100189251Ssam#endif /* CONFIG_NO_STDOUT_DEBUG */ 101189251Ssam} 102189251Ssam 103189251Ssam 104252726Srpaulostatic void wpa_supplicant_fd_workaround(int start) 105189251Ssam{ 106189251Ssam#ifdef __linux__ 107252726Srpaulo static int fd[3] = { -1, -1, -1 }; 108252726Srpaulo int i; 109189251Ssam /* When started from pcmcia-cs scripts, wpa_supplicant might start with 110189251Ssam * fd 0, 1, and 2 closed. This will cause some issues because many 111189251Ssam * places in wpa_supplicant are still printing out to stdout. As a 112189251Ssam * workaround, make sure that fd's 0, 1, and 2 are not used for other 113189251Ssam * sockets. */ 114252726Srpaulo if (start) { 115252726Srpaulo for (i = 0; i < 3; i++) { 116252726Srpaulo fd[i] = open("/dev/null", O_RDWR); 117252726Srpaulo if (fd[i] > 2) { 118252726Srpaulo close(fd[i]); 119252726Srpaulo fd[i] = -1; 120252726Srpaulo break; 121252726Srpaulo } 122189251Ssam } 123252726Srpaulo } else { 124252726Srpaulo for (i = 0; i < 3; i++) { 125252726Srpaulo if (fd[i] >= 0) { 126252726Srpaulo close(fd[i]); 127252726Srpaulo fd[i] = -1; 128252726Srpaulo } 129252726Srpaulo } 130189251Ssam } 131189251Ssam#endif /* __linux__ */ 132189251Ssam} 133189251Ssam 134189251Ssam 135189251Ssamint main(int argc, char *argv[]) 136189251Ssam{ 137189251Ssam int c, i; 138189251Ssam struct wpa_interface *ifaces, *iface; 139189251Ssam int iface_count, exitcode = -1; 140189251Ssam struct wpa_params params; 141189251Ssam struct wpa_global *global; 142189251Ssam 143189251Ssam if (os_program_init()) 144189251Ssam return -1; 145189251Ssam 146189251Ssam os_memset(¶ms, 0, sizeof(params)); 147189251Ssam params.wpa_debug_level = MSG_INFO; 148189251Ssam 149189251Ssam iface = ifaces = os_zalloc(sizeof(struct wpa_interface)); 150189251Ssam if (ifaces == NULL) 151189251Ssam return -1; 152189251Ssam iface_count = 1; 153189251Ssam 154252726Srpaulo wpa_supplicant_fd_workaround(1); 155189251Ssam 156189251Ssam for (;;) { 157252726Srpaulo c = getopt(argc, argv, 158252726Srpaulo "b:Bc:C:D:de:f:g:hi:KLNo:O:p:P:qsTtuvW"); 159189251Ssam if (c < 0) 160189251Ssam break; 161189251Ssam switch (c) { 162189251Ssam case 'b': 163189251Ssam iface->bridge_ifname = optarg; 164189251Ssam break; 165189251Ssam case 'B': 166189251Ssam params.daemonize++; 167189251Ssam break; 168189251Ssam case 'c': 169189251Ssam iface->confname = optarg; 170189251Ssam break; 171189251Ssam case 'C': 172189251Ssam iface->ctrl_interface = optarg; 173189251Ssam break; 174189251Ssam case 'D': 175189251Ssam iface->driver = optarg; 176189251Ssam break; 177189251Ssam case 'd': 178189251Ssam#ifdef CONFIG_NO_STDOUT_DEBUG 179189251Ssam printf("Debugging disabled with " 180189251Ssam "CONFIG_NO_STDOUT_DEBUG=y build time " 181189251Ssam "option.\n"); 182189251Ssam goto out; 183189251Ssam#else /* CONFIG_NO_STDOUT_DEBUG */ 184189251Ssam params.wpa_debug_level--; 185189251Ssam break; 186189251Ssam#endif /* CONFIG_NO_STDOUT_DEBUG */ 187252726Srpaulo case 'e': 188252726Srpaulo params.entropy_file = optarg; 189252726Srpaulo break; 190189251Ssam#ifdef CONFIG_DEBUG_FILE 191189251Ssam case 'f': 192189251Ssam params.wpa_debug_file_path = optarg; 193189251Ssam break; 194189251Ssam#endif /* CONFIG_DEBUG_FILE */ 195189251Ssam case 'g': 196189251Ssam params.ctrl_interface = optarg; 197189251Ssam break; 198189251Ssam case 'h': 199189251Ssam usage(); 200189251Ssam exitcode = 0; 201189251Ssam goto out; 202189251Ssam case 'i': 203189251Ssam iface->ifname = optarg; 204189251Ssam break; 205189251Ssam case 'K': 206189251Ssam params.wpa_debug_show_keys++; 207189251Ssam break; 208189251Ssam case 'L': 209189251Ssam license(); 210189251Ssam exitcode = 0; 211189251Ssam goto out; 212214734Srpaulo case 'o': 213214734Srpaulo params.override_driver = optarg; 214214734Srpaulo break; 215214734Srpaulo case 'O': 216214734Srpaulo params.override_ctrl_interface = optarg; 217214734Srpaulo break; 218189251Ssam case 'p': 219189251Ssam iface->driver_param = optarg; 220189251Ssam break; 221189251Ssam case 'P': 222189251Ssam os_free(params.pid_file); 223189251Ssam params.pid_file = os_rel2abs_path(optarg); 224189251Ssam break; 225189251Ssam case 'q': 226189251Ssam params.wpa_debug_level++; 227189251Ssam break; 228189262Ssam#ifdef CONFIG_DEBUG_SYSLOG 229189262Ssam case 's': 230189262Ssam params.wpa_debug_syslog++; 231189262Ssam break; 232189262Ssam#endif /* CONFIG_DEBUG_SYSLOG */ 233252726Srpaulo#ifdef CONFIG_DEBUG_LINUX_TRACING 234252726Srpaulo case 'T': 235252726Srpaulo params.wpa_debug_tracing++; 236252726Srpaulo break; 237252726Srpaulo#endif /* CONFIG_DEBUG_LINUX_TRACING */ 238189251Ssam case 't': 239189251Ssam params.wpa_debug_timestamp++; 240189251Ssam break; 241214734Srpaulo#ifdef CONFIG_DBUS 242189251Ssam case 'u': 243189251Ssam params.dbus_ctrl_interface = 1; 244189251Ssam break; 245214734Srpaulo#endif /* CONFIG_DBUS */ 246189251Ssam case 'v': 247189251Ssam printf("%s\n", wpa_supplicant_version); 248189251Ssam exitcode = 0; 249189251Ssam goto out; 250189251Ssam case 'W': 251189251Ssam params.wait_for_monitor++; 252189251Ssam break; 253189251Ssam case 'N': 254189251Ssam iface_count++; 255252726Srpaulo iface = os_realloc_array(ifaces, iface_count, 256252726Srpaulo sizeof(struct wpa_interface)); 257189251Ssam if (iface == NULL) 258189251Ssam goto out; 259189251Ssam ifaces = iface; 260189251Ssam iface = &ifaces[iface_count - 1]; 261189251Ssam os_memset(iface, 0, sizeof(*iface)); 262189251Ssam break; 263189251Ssam default: 264189251Ssam usage(); 265189251Ssam exitcode = 0; 266189251Ssam goto out; 267189251Ssam } 268189251Ssam } 269189251Ssam 270189251Ssam exitcode = 0; 271189251Ssam global = wpa_supplicant_init(¶ms); 272189251Ssam if (global == NULL) { 273189251Ssam wpa_printf(MSG_ERROR, "Failed to initialize wpa_supplicant"); 274189251Ssam exitcode = -1; 275189251Ssam goto out; 276252726Srpaulo } else { 277252726Srpaulo wpa_printf(MSG_INFO, "Successfully initialized " 278252726Srpaulo "wpa_supplicant"); 279189251Ssam } 280189251Ssam 281189251Ssam for (i = 0; exitcode == 0 && i < iface_count; i++) { 282189251Ssam if ((ifaces[i].confname == NULL && 283189251Ssam ifaces[i].ctrl_interface == NULL) || 284189251Ssam ifaces[i].ifname == NULL) { 285189251Ssam if (iface_count == 1 && (params.ctrl_interface || 286189251Ssam params.dbus_ctrl_interface)) 287189251Ssam break; 288189251Ssam usage(); 289189251Ssam exitcode = -1; 290189251Ssam break; 291189251Ssam } 292189251Ssam if (wpa_supplicant_add_iface(global, &ifaces[i]) == NULL) 293189251Ssam exitcode = -1; 294189251Ssam } 295189251Ssam 296189251Ssam if (exitcode == 0) 297189251Ssam exitcode = wpa_supplicant_run(global); 298189251Ssam 299189251Ssam wpa_supplicant_deinit(global); 300189251Ssam 301189251Ssamout: 302252726Srpaulo wpa_supplicant_fd_workaround(0); 303189251Ssam os_free(ifaces); 304189251Ssam os_free(params.pid_file); 305189251Ssam 306189251Ssam os_program_deinit(); 307189251Ssam 308189251Ssam return exitcode; 309189251Ssam} 310