#!/usr/bin/perl
#
# mkpass - create N passwords from dictionary words glued together
#
# Copyright (c) 1985 Corporation for Research and Educational Networking
# Copyright (c) 1988 University of Illinois Board of Trustees, Steven
#		Dorner, and Paul Pomes
# All rights reserved.
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions
# are met:
# 1. Redistributions of source code must retain the above copyright
#    notice, this list of conditions and the following disclaimer.
# 2. Redistributions in binary form must reproduce the above copyright
#    notice, this list of conditions and the following disclaimer in the
#    documentation and/or other materials provided with the distribution.
# 3. All advertising materials mentioning features or use of this software
#    must display the following acknowledgement:
#	This product includes software developed by the Corporation for
#	Research and Educational Networking (CREN), the University of
#	Illinois at Urbana, and their contributors.
# 4. Neither the name of CREN, the University nor the names of their
#    contributors may be used to endorse or promote products derived from
#    this software without specific prior written permission.
#
# THIS SOFTWARE IS PROVIDED BY THE TRUSTEES AND CONTRIBUTORS ``AS IS'' AND
# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
# ARE DISCLAIMED.  IN NO EVENT SHALL THE TRUSTEES OR CONTRIBUTORS BE LIABLE
# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
# OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
# OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
# SUCH DAMAGE.
#
# @(#)$Id: mkpass,v 1.1 1994/03/12 00:59:25 paul Exp $

if ($#ARGV<0) {print STDERR "usage: mkpass count\n";exit 1;}

# Initialize the password arrays
$DictFile = "/usr/share/lib/dict/words";
open(DICT, "<$DictFile") || die "$DictFile: $!\n";
while (<DICT>)
{
  chop;
  next if (/\W/ || /[A-Z][A-Z]/);
  if (length == 3)
  {
    push(ThreeWord, $_);
  }
  elsif (length == 4)
  {
    push(FourWord, $_);
  }
}
close(DICT);

@Punct = (2..9, '!', '*', '#', '$', '%', '&', '-', '+', '=', '<', '>', '?');
srand(time|$$);

$i = 0;
while ($i++ < $ARGV[0])
{
  printf "%s\n", &GenPass();
}
exit (0);

sub GenPass
{
  local($word1, $word2, $sep);
  if (rand() < 0.5)
  {
    $word1 = $ThreeWord[rand(@ThreeWord)];
    $word2 = $FourWord[rand(@FourWord)];
  }
  else
  {
    $word1 = $FourWord[rand(@FourWord)];
    $word2 = $ThreeWord[rand(@ThreeWord)];
  }
  $sep = $Punct[rand(@Punct)];
  $word1 .= $sep . $word2;
  return($word1);
}