libexec/makekey/makekey.c

   1 /*      $NetBSD: makekey.c,v 1.7 2003/08/07 09:46:45 agc Exp $  */
   2
   3 /*-
   4  * Copyright (c) 1990, 1993
   5  *      The Regents of the University of California.  All rights reserved.
   6  *
   7  * Redistribution and use in source and binary forms, with or without
   8  * modification, are permitted provided that the following conditions
   9  * are met:
  10  * 1. Redistributions of source code must retain the above copyright
  11  *    notice, this list of conditions and the following disclaimer.
  12  * 2. Redistributions in binary form must reproduce the above copyright
  13  *    notice, this list of conditions and the following disclaimer in the
  14  *    documentation and/or other materials provided with the distribution.
  15  * 3. Neither the name of the University nor the names of its contributors
  16  *    may be used to endorse or promote products derived from this software
  17  *    without specific prior written permission.
  18  *
  19  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  20  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  21  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  22  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  23  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  24  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  25  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  26  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  27  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  28  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  29  * SUCH DAMAGE.
  30  */
  31
  32 #include <sys/cdefs.h>
  33 #ifndef lint
  34 __COPYRIGHT("@(#) Copyright (c) 1990, 1993\
  35  The Regents of the University of California.  All rights reserved.");
  36 #if 0
  37 static char sccsid[] = "from: @(#)makekey.c     8.1 (Berkeley) 6/4/93";
  38 #else
  39 __RCSID("$NetBSD: makekey.c,v 1.7 2003/08/07 09:46:45 agc Exp $");
  40 #endif
  41 #endif /* not lint */
  42
  43 #include <err.h>
  44 #include <errno.h>
  45 #include <string.h>
  46 #include <stdlib.h>
  47 #include <unistd.h>
  48
  49 static void get(char *, int);
  50 int main(void);
  51
  52 int
  53 main(void)
  54 {
  55         int len;
  56         char *r, key[9], salt[3];
  57
  58         get(key, sizeof(key) - 1);
  59         get(salt, sizeof(salt) - 1);
  60         len = strlen(r = crypt(key, salt));
  61         if (write(STDOUT_FILENO, r, len) != len)
  62                 err(1, "stdout");
  63         exit(0);
  64 }
  65
  66 static void
  67 get(char *bp, int len)
  68 {
  69         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 }