310 lines
7.5 KiB
C
310 lines
7.5 KiB
C
/*
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* WPA Supplicant / main() function for UNIX like OSes and MinGW
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* Copyright (c) 2003-2007, Jouni Malinen <j@w1.fi>
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*
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* This software may be distributed under the terms of the BSD license.
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* See README for more details.
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*/
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#include "includes.h"
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#ifdef __linux__
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#include <fcntl.h>
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#endif /* __linux__ */
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#include "common.h"
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#include "wpa_supplicant_i.h"
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#include "driver_i.h"
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extern struct wpa_driver_ops *wpa_drivers[];
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static void usage(void)
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{
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int i;
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printf("%s\n\n%s\n"
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"usage:\n"
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" wpa_supplicant [-BddhKLqqstuvW] [-P<pid file>] "
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"[-g<global ctrl>] \\\n"
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" -i<ifname> -c<config file> [-C<ctrl>] [-D<driver>] "
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"[-p<driver_param>] \\\n"
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" [-b<br_ifname>] [-f<debug file>] [-e<entropy file>] "
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"\\\n"
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" [-o<override driver>] [-O<override ctrl>] \\\n"
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" [-N -i<ifname> -c<conf> [-C<ctrl>] "
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"[-D<driver>] \\\n"
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" [-p<driver_param>] [-b<br_ifname>] ...]\n"
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"\n"
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"drivers:\n",
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wpa_supplicant_version, wpa_supplicant_license);
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for (i = 0; wpa_drivers[i]; i++) {
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printf(" %s = %s\n",
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wpa_drivers[i]->name,
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wpa_drivers[i]->desc);
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}
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#ifndef CONFIG_NO_STDOUT_DEBUG
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printf("options:\n"
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" -b = optional bridge interface name\n"
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" -B = run daemon in the background\n"
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" -c = Configuration file\n"
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" -C = ctrl_interface parameter (only used if -c is not)\n"
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" -i = interface name\n"
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" -d = increase debugging verbosity (-dd even more)\n"
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" -D = driver name (can be multiple drivers: nl80211,wext)\n"
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" -e = entropy file\n");
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#ifdef CONFIG_DEBUG_FILE
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printf(" -f = log output to debug file instead of stdout\n");
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#endif /* CONFIG_DEBUG_FILE */
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printf(" -g = global ctrl_interface\n"
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" -K = include keys (passwords, etc.) in debug output\n");
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#ifdef CONFIG_DEBUG_SYSLOG
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printf(" -s = log output to syslog instead of stdout\n");
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#endif /* CONFIG_DEBUG_SYSLOG */
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#ifdef CONFIG_DEBUG_LINUX_TRACING
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printf(" -T = record to Linux tracing in addition to logging\n");
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printf(" (records all messages regardless of debug verbosity)\n");
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#endif /* CONFIG_DEBUG_LINUX_TRACING */
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printf(" -t = include timestamp in debug messages\n"
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" -h = show this help text\n"
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" -L = show license (BSD)\n"
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" -o = override driver parameter for new interfaces\n"
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" -O = override ctrl_interface parameter for new interfaces\n"
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" -p = driver parameters\n"
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" -P = PID file\n"
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" -q = decrease debugging verbosity (-qq even less)\n");
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#ifdef CONFIG_DBUS
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printf(" -u = enable DBus control interface\n");
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#endif /* CONFIG_DBUS */
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printf(" -v = show version\n"
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" -W = wait for a control interface monitor before starting\n"
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" -N = start describing new interface\n");
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printf("example:\n"
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" wpa_supplicant -D%s -iwlan0 -c/etc/wpa_supplicant.conf\n",
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wpa_drivers[i] ? wpa_drivers[i]->name : "wext");
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#endif /* CONFIG_NO_STDOUT_DEBUG */
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}
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static void license(void)
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{
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#ifndef CONFIG_NO_STDOUT_DEBUG
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printf("%s\n\n%s%s%s%s%s\n",
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wpa_supplicant_version,
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wpa_supplicant_full_license1,
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wpa_supplicant_full_license2,
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wpa_supplicant_full_license3,
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wpa_supplicant_full_license4,
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wpa_supplicant_full_license5);
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#endif /* CONFIG_NO_STDOUT_DEBUG */
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}
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static void wpa_supplicant_fd_workaround(int start)
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{
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#ifdef __linux__
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static int fd[3] = { -1, -1, -1 };
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int i;
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/* When started from pcmcia-cs scripts, wpa_supplicant might start with
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* fd 0, 1, and 2 closed. This will cause some issues because many
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* places in wpa_supplicant are still printing out to stdout. As a
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* workaround, make sure that fd's 0, 1, and 2 are not used for other
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* sockets. */
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if (start) {
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for (i = 0; i < 3; i++) {
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fd[i] = open("/dev/null", O_RDWR);
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if (fd[i] > 2) {
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close(fd[i]);
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fd[i] = -1;
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break;
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}
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}
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} else {
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for (i = 0; i < 3; i++) {
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if (fd[i] >= 0) {
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close(fd[i]);
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fd[i] = -1;
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}
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}
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}
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#endif /* __linux__ */
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}
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int main(int argc, char *argv[])
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{
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int c, i;
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struct wpa_interface *ifaces, *iface;
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int iface_count, exitcode = -1;
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struct wpa_params params;
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struct wpa_global *global;
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if (os_program_init())
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return -1;
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os_memset(¶ms, 0, sizeof(params));
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params.wpa_debug_level = MSG_INFO;
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iface = ifaces = os_zalloc(sizeof(struct wpa_interface));
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if (ifaces == NULL)
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return -1;
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iface_count = 1;
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wpa_supplicant_fd_workaround(1);
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for (;;) {
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c = getopt(argc, argv,
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"b:Bc:C:D:de:f:g:hi:KLNo:O:p:P:qsTtuvW");
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if (c < 0)
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break;
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switch (c) {
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case 'b':
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iface->bridge_ifname = optarg;
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break;
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case 'B':
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params.daemonize++;
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break;
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case 'c':
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iface->confname = optarg;
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break;
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case 'C':
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iface->ctrl_interface = optarg;
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break;
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case 'D':
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iface->driver = optarg;
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break;
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case 'd':
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#ifdef CONFIG_NO_STDOUT_DEBUG
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printf("Debugging disabled with "
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"CONFIG_NO_STDOUT_DEBUG=y build time "
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"option.\n");
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goto out;
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#else /* CONFIG_NO_STDOUT_DEBUG */
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params.wpa_debug_level--;
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break;
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#endif /* CONFIG_NO_STDOUT_DEBUG */
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case 'e':
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params.entropy_file = optarg;
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break;
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#ifdef CONFIG_DEBUG_FILE
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case 'f':
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params.wpa_debug_file_path = optarg;
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break;
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#endif /* CONFIG_DEBUG_FILE */
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case 'g':
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params.ctrl_interface = optarg;
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break;
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case 'h':
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usage();
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exitcode = 0;
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goto out;
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case 'i':
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iface->ifname = optarg;
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break;
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case 'K':
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params.wpa_debug_show_keys++;
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break;
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case 'L':
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license();
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exitcode = 0;
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goto out;
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case 'o':
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params.override_driver = optarg;
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break;
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case 'O':
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params.override_ctrl_interface = optarg;
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break;
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case 'p':
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iface->driver_param = optarg;
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break;
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case 'P':
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os_free(params.pid_file);
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params.pid_file = os_rel2abs_path(optarg);
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break;
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case 'q':
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params.wpa_debug_level++;
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break;
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#ifdef CONFIG_DEBUG_SYSLOG
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case 's':
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params.wpa_debug_syslog++;
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break;
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#endif /* CONFIG_DEBUG_SYSLOG */
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#ifdef CONFIG_DEBUG_LINUX_TRACING
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case 'T':
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params.wpa_debug_tracing++;
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break;
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#endif /* CONFIG_DEBUG_LINUX_TRACING */
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case 't':
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params.wpa_debug_timestamp++;
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break;
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#ifdef CONFIG_DBUS
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case 'u':
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params.dbus_ctrl_interface = 1;
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break;
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#endif /* CONFIG_DBUS */
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case 'v':
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printf("%s\n", wpa_supplicant_version);
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exitcode = 0;
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goto out;
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case 'W':
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params.wait_for_monitor++;
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break;
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case 'N':
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iface_count++;
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iface = os_realloc_array(ifaces, iface_count,
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sizeof(struct wpa_interface));
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if (iface == NULL)
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goto out;
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ifaces = iface;
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iface = &ifaces[iface_count - 1];
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os_memset(iface, 0, sizeof(*iface));
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break;
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default:
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usage();
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exitcode = 0;
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goto out;
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}
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}
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exitcode = 0;
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global = wpa_supplicant_init(¶ms);
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if (global == NULL) {
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wpa_printf(MSG_ERROR, "Failed to initialize wpa_supplicant");
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exitcode = -1;
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goto out;
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} else {
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wpa_printf(MSG_INFO, "Successfully initialized "
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"wpa_supplicant");
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}
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for (i = 0; exitcode == 0 && i < iface_count; i++) {
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if ((ifaces[i].confname == NULL &&
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ifaces[i].ctrl_interface == NULL) ||
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ifaces[i].ifname == NULL) {
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if (iface_count == 1 && (params.ctrl_interface ||
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params.dbus_ctrl_interface))
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break;
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usage();
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exitcode = -1;
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break;
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}
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if (wpa_supplicant_add_iface(global, &ifaces[i]) == NULL)
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exitcode = -1;
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}
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if (exitcode == 0)
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exitcode = wpa_supplicant_run(global);
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wpa_supplicant_deinit(global);
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out:
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wpa_supplicant_fd_workaround(0);
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os_free(ifaces);
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os_free(params.pid_file);
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os_program_deinit();
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return exitcode;
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}
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