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. All advertising materials mentioning features or use of this software
  14  *    must display the following acknowledgement:
  15  *      This product includes software developed by the University of
  16  *      California, Berkeley and its contributors.
  17  * 4. Neither the name of the University nor the names of its contributors
  18  *    may be used to endorse or promote products derived from this software
  19  *    without specific prior written permission.
  20  *
  21  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  22  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  23  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  24  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  25  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  26  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  27  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  28  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  29  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  30  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  31  * SUCH DAMAGE.
  32  *
  33  * @(#) Copyright (c) 1990, 1993 The Regents of the University of California.  All rights reserved.
  34  * @(#)makekey.c        8.1 (Berkeley) 6/4/93
  35  * $FreeBSD: src/libexec/makekey/makekey.c,v 1.8 1999/08/28 00:09:39 peter Exp $
  36  * $DragonFly: src/libexec/makekey/makekey.c,v 1.4 2006/08/13 16:21:34 swildner Exp $
  37  */
  38
  39 #include <sys/types.h>
  40
  41 #include <err.h>
  42 #include <errno.h>
  43 #include <stdio.h>
  44 #include <stdlib.h>
  45 #include <string.h>
  46 #include <unistd.h>
  47
  48 static void get (char *, int);
  49
  50 int
  51 main(void)
  52 {
  53         int len;
  54         char *r, key[9], salt[3];
  55
  56         get(key, sizeof(key) - 1);
  57         get(salt, sizeof(salt) - 1);
  58         len = strlen(r = crypt(key, salt));
  59         if (write(STDOUT_FILENO, r, len) != len)
  60                 err(1, "stdout");
  61         exit(0);
  62 }
  63
  64 static void
  65 get(bp, len)
  66         char *bp;
  67         register int len;
  68 {
  69         register int nr;
  70
  71         bp[len] = '\0';
  72         if ((nr = read(STDIN_FILENO, bp, len)) == len)
  73                 return;
  74         if (nr >= 0)
  75                 errno = EFTYPE;
  76         err(1, "stdin");
  77 }