usr.bin/keyinfo/keyinfo.c

   1 /*-
   2  * Copyright (c) 2000 Warner Losh.
   3  * All rights reserved.
   4  *
   5  * Redistribution and use in source and binary forms, with or without
   6  * modification, are permitted provided that the following conditions
   7  * are met:
   8  * 1. Redistributions of source code must retain the above copyright
   9  *    notice, this list of conditions and the following disclaimer.
  10  * 2. Redistributions in binary form must reproduce the above copyright
  11  *    notice, this list of conditions and the following disclaimer in the
  12  *    documentation and/or other materials provided with the distribution.
  13  *
  14  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
  15  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  16  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  17  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
  18  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  19  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  20  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  21  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  22  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  23  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  24  * SUCH DAMAGE.
  25  *
  26  * $FreeBSD: src/usr.bin/keyinfo/keyinfo.c,v 1.3.4.1 2001/11/06 03:36:33 imp Exp $
  27  * $DragonFly: src/usr.bin/keyinfo/keyinfo.c,v 1.2 2003/06/17 04:29:27 dillon Exp $
  28  */
  29
  30 #include <sys/param.h>
  31 #include <stdio.h>
  32 #include <string.h>
  33 #include <skey.h>
  34 #include <unistd.h>
  35 #include <err.h>
  36
  37 int
  38 main(int argc, char *argv[])
  39 {
  40         struct skey skey;
  41         char *login;
  42         char *name;
  43         int serr;
  44
  45         login = getlogin();
  46         if (login == NULL)
  47                 errx(1, "Cannot find login name");
  48         if (getuid() != 0 && argc > 1 && strcmp(login, argv[1]) != 0)
  49                 errx(1, "Only superuser may get another user's keys");
  50         name = argc > 1 ? argv[1] : login;
  51         serr = skeylookup(&skey, name);
  52         if (serr == -1)
  53                 err(1, "skeylookup os failure");
  54         fclose(skey.keyfile);
  55         if (serr != 0)
  56                 errx(1, "skeylookup: user %s not found", name);
  57         printf("%d %s\n", skey.n - 1, skey.seed);
  58         return (0);
  59 }