libexec/makekey/makekey.c

   1 /*-
   2  * Copyright (c) 1990, 1993
   3  *      The Regents of the University of California.  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  * 3. Neither the name of the University nor the names of its contributors
  14  *    may be used to endorse or promote products derived from this software
  15  *    without specific prior written permission.
  16  *
  17  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  18  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  19  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  20  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  21  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  22  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  23  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  24  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  25  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  26  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  27  * SUCH DAMAGE.
  28  *
  29  * @(#) Copyright (c) 1990, 1993 The Regents of the University of California.  All rights reserved.
  30  * @(#)makekey.c        8.1 (Berkeley) 6/4/93
  31  * $FreeBSD: src/libexec/makekey/makekey.c,v 1.8 1999/08/28 00:09:39 peter Exp $
  32  * $DragonFly: src/libexec/makekey/makekey.c,v 1.4 2006/08/13 16:21:34 swildner Exp $
  33  */
  34
  35 #include <sys/types.h>
  36
  37 #include <err.h>
  38 #include <errno.h>
  39 #include <stdio.h>
  40 #include <stdlib.h>
  41 #include <string.h>
  42 #include <unistd.h>
  43
  44 static void get (char *, int);
  45
  46 int
  47 main(void)
  48 {
  49         int len;
  50         char *r, key[9], salt[3];
  51
  52         get(key, sizeof(key) - 1);
  53         get(salt, sizeof(salt) - 1);
  54         len = strlen(r = crypt(key, salt));
  55         if (write(STDOUT_FILENO, r, len) != len)
  56                 err(1, "stdout");
  57         exit(0);
  58 }
  59
  60 static void
  61 get(char *bp, int len)
  62 {
  63         int nr;
  64
  65         bp[len] = '\0';
  66         if ((nr = read(STDIN_FILENO, bp, len)) == len)
  67                 return;
  68         if (nr >= 0)
  69                 errno = EFTYPE;
  70         err(1, "stdin");
  71 }