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131 lines
3.8 KiB
C
131 lines
3.8 KiB
C
/*
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* Copyright (c) 2005 Mark Fullmer
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* Copyright (c) 2009 Mark Fullmer and the Ohio State University
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* $Id: otp-ov-plugin.c 50 2009-12-15 01:37:19Z maf $
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*/
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#include <stdio.h>
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#include <sys/types.h>
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#include <fcntl.h>
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#include <sys/errno.h>
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#include <stdlib.h>
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#include "ffdb.h"
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#include "otplib.h"
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#include "xerr.h"
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void help(void);
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int main (int argc, char **argv)
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{
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struct otp_ctx *otpctx;
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u_long tmpul;
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char *otpdb_fname, *username, *pass, *endptr;
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int db_flags, i, r, ret, otp_window;
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/* init xerr */
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xerr_setid(argv[0]);
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otpdb_fname = OTP_DB_FNAME;
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db_flags = 0;
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otp_window = OTP_WINDOW_DEFAULT;
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ret = -1; /* fail */
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while ((i = getopt(argc, argv, "h?o:vw:")) != -1) {
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switch (i) {
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case 'h':
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case '?':
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help();
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exit(0); /* be careful here... openvpn treats this as accept auth */
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case 'o' :
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otpdb_fname = optarg;
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break;
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case 'v':
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db_flags |= OTP_DB_VERBOSE;
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break;
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case 'w':
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tmpul = strtoul(optarg, &endptr, 0);
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if (*endptr)
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xerr_errx(1, "stroul(%s): failed at %c.", optarg, *endptr);
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if (tmpul > OTP_WINDOW_MAX)
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xerr_errx(1, "Challenge window %lu > %lu.", tmpul, OTP_WINDOW_MAX);
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otp_window = tmpul;
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break;
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default:
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help();
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exit(1);
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} /* switch */
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} /* while */
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if (!(username = getenv("user")))
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xerr_errx(1, "getenv(user): failed.");
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if (!(pass = getenv("pass")))
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xerr_errx(1, "getenv(pass): failed.");
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if (!(otpctx = otp_db_open(otpdb_fname, db_flags)))
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xerr_errx(1, "otp_db_open(): failed.");
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if ((r = otp_user_exists(otpctx, username)) < 0)
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xerr_errx(1, "otp_user_exists(): failed.");
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if (r != 0)
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xerr_errx(1, "User %s does not exist in otp database.", username);
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if ((r = otp_user_auth(otpctx, username, pass, otp_window)) < 0)
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xerr_errx(1, "otp_user_auth(): failed.");
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if (otp_db_close(otpctx) < 0)
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xerr_errx(1, "otp_user_close(): failed.");
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/* convert otp auth status to openvpn auth return code space */
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if (r == OTP_AUTH_PASS) {
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if (db_flags & OTP_DB_VERBOSE)
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xerr_info("OTP_AUTH_PASS");
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ret = 0;
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} else {
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if (db_flags & OTP_DB_VERBOSE)
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xerr_info("OTP_AUTH_FAIL");
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ret = 1;
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}
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return ret;
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} /* main.c */
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void help()
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{
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fprintf(stderr, "otp-ov-plugin [-?hv] [-o otpdb_pathname] [-w otp_window]\n");
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fprintf(stderr, " -h : help\n");
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fprintf(stderr, " -v : enable verbose output\n");
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} /* help */
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