#!%PerlProg%
#
# a.unblock - unblock a tape created from admissions records
#	Use d.unblock to unblock a tape created from directory records
#
# 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: a.unblock,v 1.2 1995/05/23 15:00:30 p-pomes Exp $

# Tape layout is as follows:
# 9	SSN				1-9
# 1     pad				10
# 20	name (last, first, mi)		11-30
# 1     pad				31
# 27	home street address #1		32-58
# 1     pad				59
# 27	home street address #2		60-86
# 1     pad				87
# 24	home street address #3		88-111
# 1     pad				112
# 4	curriculum			113-115
#

#
# beginning of interesting stuff
#

#
# usage
if ($#ARGV<0) {print STDERR "usage: a.unblock prod.cnf [files]\n";exit 1;}

#
# Datestamp
($sec, $min, $hour, $mday, $mon, $year, $wday, $yday, $isdst) = localtime(time);
$year += ($year < 70) ? 2000 : 1900;
$Date = sprintf("%d/%d", $mon+1, $year);

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

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

#
# read prod.cnf
$config = shift;
open(CONFIG,"<$config") || die "$config: $!\n";
while (<CONFIG>)
{
  chop;
  if (/^#/) {next;}
  if (length==0) {next;}
  split(/:/);
  if (@_ < 2) {next;}
  $fid{$_[1]} = $_[0];
}
close(CONFIG);

#
# here we go...
while (<>)
{
  tr/A-Z/a-z/;
  if (length($_)<20) {next;}	# sanity check
  
  ($id,$name,$HomeAddr1,$HomeAddr2,$HomeAddr3,$curriculum)
    = unpack("A9xA20xA27xA27xA24xA4",$_);
  
  if ($HomeAddr1 eq "ng") {
    $HomeAddr = "";
  }
  else {
    $HomeAddr = $HomeAddr1;
    $HomeAddr = &SepCat($HomeAddr,"\\n",$HomeAddr2);
    $HomeAddr = &SepCat($HomeAddr,"\\n",$HomeAddr3);
  }
  
  #
  # create default password
  #
  $Password = &GenPass();

  $out = $fid{"id"} . ":" . $id . "\t4:person phone";
  $out = &SepCat($out,"\t".$fid{"name"}.":",$name);
  $out = &SepCat($out,"\t".$fid{"curriculum"}.":",$curriculum);
  $out = &SepCat($out,"\t".$fid{"home_address"}.":",$HomeAddr);
  $out = &SepCat($out,"\t".$fid{"created"}.":",$Date);
  $out = &SepCat($out,"\t".$fid{"password"}.":",$Password);
  
  # fix this bit of stupidity
  $out =~ s/ ,/, /g;
  
  # and print it...
  print $out . "\n";
}

sub FixPhone
{
  $phone = $_[0];
  if (length($phone)==7)
  {
    $phone =~ s/.../(217) $&-/;
  }
  elsif (length($phone)==10)
  {
    $phone =~ s/(...)(...)/($1) $2-/;
  }
  $phone;
}

sub SepCat
{
  ($str1,$sep,$str2) = @_;
  ($str1 ne "" && $str2 ne "") ? ($str1 .= $sep . $str2) : ($str1 .= $str2);
}

sub GenPass
{
  local($i,$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;

  $i = 1;
  $i = int(rand(8));
  
  $word2 = substr($word1, $i, 1);
  $word2 =~ s/./\U$&/;
  substr($word1, $i, 1) = $word2;

  return($word1);
}