/*
* WPA Supplicant / main() function for UNIX like OSes and MinGW
* Copyright (c) 2003-2013, Jouni Malinen <j@w1.fi>
*
* This software may be distributed under the terms of the BSD license.
* See README for more details.
*/
#include "includes.h"
#ifdef __linux__
#include <fcntl.h>
#endif /* __linux__ */
#include "common.h"
#include "wpa_supplicant_i.h"
#include "driver_i.h"
#include "p2p_supplicant.h"
extern struct wpa_driver_ops *wpa_drivers[];
static void usage(void)
{
int i;
printf("%s\n\n%s\n"
"usage:\n"
" wpa_supplicant [-BddhKLqqstuvW] [-P<pid file>] "
"[-g<global ctrl>] \\\n"
" [-G<group>] \\\n"
" -i<ifname> -c<config file> [-C<ctrl>] [-D<driver>] "
"[-p<driver_param>] \\\n"
" [-b<br_ifname>] [-f<debug file>] [-e<entropy file>] "
"\\\n"
" [-o<override driver>] [-O<override ctrl>] \\\n"
" [-N -i<ifname> -c<conf> [-C<ctrl>] "
"[-D<driver>] \\\n"
" [-p<driver_param>] [-b<br_ifname>] [-I<config file>] "
"...]\n"
"\n"
"drivers:\n",
wpa_supplicant_version, wpa_supplicant_license);
for (i = 0; wpa_drivers[i]; i++) {
printf(" %s = %s\n",
wpa_drivers[i]->name,
wpa_drivers[i]->desc);
}
#ifndef CONFIG_NO_STDOUT_DEBUG
printf("options:\n"
" -b = optional bridge interface name\n"
" -B = run daemon in the background\n"
" -c = Configuration file\n"
" -C = ctrl_interface parameter (only used if -c is not)\n"
" -i = interface name\n"
" -I = additional configuration file\n"
" -d = increase debugging verbosity (-dd even more)\n"
" -D = driver name (can be multiple drivers: nl80211,wext)\n"
" -e = entropy file\n");
#ifdef CONFIG_DEBUG_FILE
printf(" -f = log output to debug file instead of stdout\n");
#endif /* CONFIG_DEBUG_FILE */
printf(" -g = global ctrl_interface\n"
" -G = global ctrl_interface group\n"
" -K = include keys (passwords, etc.) in debug output\n");
#ifdef CONFIG_DEBUG_SYSLOG
printf(" -s = log output to syslog instead of stdout\n");
#endif /* CONFIG_DEBUG_SYSLOG */
#ifdef CONFIG_DEBUG_LINUX_TRACING
printf(" -T = record to Linux tracing in addition to logging\n");
printf(" (records all messages regardless of debug verbosity)\n");
#endif /* CONFIG_DEBUG_LINUX_TRACING */
printf(" -t = include timestamp in debug messages\n"
" -h = show this help text\n"
" -L = show license (BSD)\n"
" -o = override driver parameter for new interfaces\n"
" -O = override ctrl_interface parameter for new interfaces\n"
" -p = driver parameters\n"
" -P = PID file\n"
" -q = decrease debugging verbosity (-qq even less)\n");
#ifdef CONFIG_DBUS
printf(" -u = enable DBus control interface\n");
#endif /* CONFIG_DBUS */
printf(" -v = show version\n"
" -W = wait for a control interface monitor before starting\n"
" -N = start describing new interface\n");
printf("example:\n"
" wpa_supplicant -D%s -iwlan0 -c/etc/wpa_supplicant.conf\n",
wpa_drivers[0] ? wpa_drivers[0]->name : "nl80211");
#endif /* CONFIG_NO_STDOUT_DEBUG */
}
static void license(void)
{
#ifndef CONFIG_NO_STDOUT_DEBUG
printf("%s\n\n%s%s%s%s%s\n",
wpa_supplicant_version,
wpa_supplicant_full_license1,
wpa_supplicant_full_license2,
wpa_supplicant_full_license3,
wpa_supplicant_full_license4,
wpa_supplicant_full_license5);
#endif /* CONFIG_NO_STDOUT_DEBUG */
}
static void wpa_supplicant_fd_workaround(int start)
{
#ifdef __linux__
static int fd[3] = { -1, -1, -1 };
int i;
/* When started from pcmcia-cs scripts, wpa_supplicant might start with
* fd 0, 1, and 2 closed. This will cause some issues because many
* places in wpa_supplicant are still printing out to stdout. As a
* workaround, make sure that fd's 0, 1, and 2 are not used for other
* sockets. */
if (start) {
for (i = 0; i < 3; i++) {
fd[i] = open("/dev/null", O_RDWR);
if (fd[i] > 2) {
close(fd[i]);
fd[i] = -1;
break;
}
}
} else {
for (i = 0; i < 3; i++) {
if (fd[i] >= 0) {
close(fd[i]);
fd[i] = -1;
}
}
}
#endif /* __linux__ */
}
int main(int argc, char *argv[])
{
int c, i;
struct wpa_interface *ifaces, *iface;
int iface_count, exitcode = -1;
struct wpa_params params;
struct wpa_global *global;
if (os_program_init())
return -1;
os_memset(¶ms, 0, sizeof(params));
params.wpa_debug_level = MSG_INFO;
iface = ifaces = os_zalloc(sizeof(struct wpa_interface));
if (ifaces == NULL)
return -1;
iface_count = 1;
wpa_supplicant_fd_workaround(1);
for (;;) {
c = getopt(argc, argv,
"b:Bc:C:D:de:f:g:G:hi:I:KLNo:O:p:P:qsTtuvW");
if (c < 0)
break;
switch (c) {
case 'b':
iface->bridge_ifname = optarg;
break;
case 'B':
params.daemonize++;
break;
case 'c':
iface->confname = optarg;
break;
case 'C':
iface->ctrl_interface = optarg;
break;
case 'D':
iface->driver = optarg;
break;
case 'd':
#ifdef CONFIG_NO_STDOUT_DEBUG
printf("Debugging disabled with "
"CONFIG_NO_STDOUT_DEBUG=y build time "
"option.\n");
goto out;
#else /* CONFIG_NO_STDOUT_DEBUG */
params.wpa_debug_level--;
break;
#endif /* CONFIG_NO_STDOUT_DEBUG */
case 'e':
params.entropy_file = optarg;
break;
#ifdef CONFIG_DEBUG_FILE
case 'f':
params.wpa_debug_file_path = optarg;
break;
#endif /* CONFIG_DEBUG_FILE */
case 'g':
params.ctrl_interface = optarg;
break;
case 'G':
params.ctrl_interface_group = optarg;
break;
case 'h':
usage();
exitcode = 0;
goto out;
case 'i':
iface->ifname = optarg;
break;
case 'I':
iface->confanother = optarg;
break;
case 'K':
params.wpa_debug_show_keys++;
break;
case 'L':
license();
exitcode = 0;
goto out;
case 'o':
params.override_driver = optarg;
break;
case 'O':
params.override_ctrl_interface = optarg;
break;
case 'p':
iface->driver_param = optarg;
break;
case 'P':
os_free(params.pid_file);
params.pid_file = os_rel2abs_path(optarg);
break;
case 'q':
params.wpa_debug_level++;
break;
#ifdef CONFIG_DEBUG_SYSLOG
case 's':
params.wpa_debug_syslog++;
break;
#endif /* CONFIG_DEBUG_SYSLOG */
#ifdef CONFIG_DEBUG_LINUX_TRACING
case 'T':
params.wpa_debug_tracing++;
break;
#endif /* CONFIG_DEBUG_LINUX_TRACING */
case 't':
params.wpa_debug_timestamp++;
break;
#ifdef CONFIG_DBUS
case 'u':
params.dbus_ctrl_interface = 1;
break;
#endif /* CONFIG_DBUS */
case 'v':
printf("%s\n", wpa_supplicant_version);
exitcode = 0;
goto out;
case 'W':
params.wait_for_monitor++;
break;
case 'N':
iface_count++;
iface = os_realloc_array(ifaces, iface_count,
sizeof(struct wpa_interface));
if (iface == NULL)
goto out;
ifaces = iface;
iface = &ifaces[iface_count - 1];
os_memset(iface, 0, sizeof(*iface));
break;
default:
usage();
exitcode = 0;
goto out;
}
}
exitcode = 0;
global = wpa_supplicant_init(¶ms);
if (global == NULL) {
wpa_printf(MSG_ERROR, "Failed to initialize wpa_supplicant");
exitcode = -1;
goto out;
} else {
wpa_printf(MSG_INFO, "Successfully initialized "
"wpa_supplicant");
}
for (i = 0; exitcode == 0 && i < iface_count; i++) {
struct wpa_supplicant *wpa_s;
if ((ifaces[i].confname == NULL &&
ifaces[i].ctrl_interface == NULL) ||
ifaces[i].ifname == NULL) {
if (iface_count == 1 && (params.ctrl_interface ||
params.dbus_ctrl_interface))
break;
usage();
exitcode = -1;
break;
}
wpa_s = wpa_supplicant_add_iface(global, &ifaces[i]);
if (wpa_s == NULL) {
exitcode = -1;
break;
}
#ifdef CONFIG_P2P
if (wpa_s->global->p2p == NULL &&
(wpa_s->drv_flags &
WPA_DRIVER_FLAGS_DEDICATED_P2P_DEVICE) &&
wpas_p2p_add_p2pdev_interface(wpa_s) < 0)
exitcode = -1;
#endif /* CONFIG_P2P */
}
if (exitcode == 0)
exitcode = wpa_supplicant_run(global);
wpa_supplicant_deinit(global);
out:
wpa_supplicant_fd_workaround(0);
os_free(ifaces);
os_free(params.pid_file);
os_program_deinit();
return exitcode;
}