Hardware authentication for Linux using ordinary USB Flash Drives.
You can not select more than 25 topics Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
 
 
 
 
 

135 lines
3.6 KiB

/*
* Copyright (c) 2003-2007 Andrea Luzzardi <scox@sig11.org>
*
* This file is part of the pam_usb project. pam_usb is free software;
* you can redistribute it and/or modify it under the terms of the GNU General
* Public License version 2, as published by the Free Software Foundation.
*
* pam_usb is distributed in the hope that it will be useful, but WITHOUT ANY
* WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
* FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
* details.
*
* You should have received a copy of the GNU General Public License along with
* this program; if not, write to the Free Software Foundation, Inc., 59 Temple
* Place, Suite 330, Boston, MA 02111-1307 USA
*/
#include <stdio.h>
#include <unistd.h>
#include "conf.h"
#include "log.h"
#include "device.h"
#include "local.h"
static void pusb_check_conf_dump(t_pusb_options *opts)
{
fprintf(stdout, "Configuration dump:\n");
fprintf(stdout, "enable\t\t\t: %s\n", opts->enable ? "true" : "false");
fprintf(stdout, "debug\t\t\t: %s\n", opts->debug ? "true" : "false");
fprintf(stdout, "quiet\t\t\t: %s\n", opts->quiet ? "true" : "false");
fprintf(stdout, "color_log\t\t: %s\n", opts->color_log ? "true" : "false");
fprintf(stdout, "one_time_pad\t\t: %s\n",
opts->one_time_pad ? "true" : "false");
fprintf(stdout, "probe_timeout\t\t: %d\n", opts->probe_timeout);
fprintf(stdout, "hostname\t\t: %s\n", opts->hostname);
fprintf(stdout, "system_pad_directory\t: %s\n",
opts->system_pad_directory);
fprintf(stdout, "device_pad_directory\t: %s\n",
opts->device_pad_directory);
}
static int pusb_check_perform_authentication(t_pusb_options *opts,
const char *user,
const char *service)
{
int retval;
if (!opts->enable)
{
log_debug("Not enabled, exiting...\n");
return (0);
}
log_info("Authentication request for user \"%s\" (%s)\n",
user, service);
if (!pusb_local_login(opts, user))
{
log_error("Access denied.\n");
return (0);
}
retval = pusb_device_check(opts, user);
if (retval)
log_info("Access granted.\n");
else
log_error("Access denied.\n");
return (retval);
}
static void pusb_check_usage(const char *name)
{
fprintf(stderr, "Usage: %s [-c <config file>] -u <username> -s <service>" \
" [options]\n", name);
fprintf(stderr, "-u and -s are mandatory\n");
fprintf(stderr, "Options can be one or more of the followings:\n");
fprintf(stderr, "\t-a Authenticate: Try to authenticate the user\n");
fprintf(stderr, "\t-d Dump: Parse and dump the settings\n");
fprintf(stderr, "\t-q Quiet: Silent mode\n");
}
int main(int argc, char **argv)
{
t_pusb_options opts;
char *conf_file = PUSB_CONF_FILE;
int quiet = 0;
char *user = NULL;
char *service = NULL;
int opt;
int mode = 0;
extern char *optarg;
while ((opt = getopt(argc, argv, "u:s:c:qad")) != EOF)
{
switch (opt)
{
case 'u':
user = optarg;
break;
case 's':
service = optarg;
break;
case 'c':
conf_file = optarg;
break;
case 'q':
quiet = 1;
break;
case 'a':
mode = 1;
break;
case 'd':
mode = 2;
break;
default:
break;
}
}
if (!user || !service || !mode)
{
pusb_check_usage(argv[0]);
return (1);
}
pusb_conf_init(&opts);
if (!pusb_conf_parse(conf_file, &opts, user, service))
return (1);
if (quiet)
{
opts.quiet = 1;
opts.debug = 0;
}
pusb_log_init(&opts);
if (mode == 1)
return (!pusb_check_perform_authentication(&opts, user, service));
else if (mode == 2)
pusb_check_conf_dump(&opts);
return (0);
}