#!/usr/local/bin/perl
#$Id: lls,v 1.2 1998/03/11 08:19:20 schwartz Exp $
#
# lls, Laola List
#
# This program lists the structure of ole/com documents.
#
# See also usage() of this file. General information at:
#    http://wwwwbs.cs.tu-berlin.de/~schwartz/pmh/index.html
#
# Copyright (C) 1996, 1997 Martin Schwartz 
#
#    This program is free software; you can redistribute it and/or modify
#    it under the terms of the GNU General Public License as published by
#    the Free Software Foundation; either version 2 of the License, or
#    (at your option) any later version.
#
#    This program is distributed in the hope that it will be useful,
#    but WITHOUT ANY WARRANTY; without even the implied warranty of
#    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
#    GNU General Public License for more details.
#
#    You should have received a copy of the GNU General Public License
#    along with this program; if not, you should find it at:
#
#    http://wwwwbs.cs.tu-berlin.de/~schwartz/pmh/COPYING
#
# You can contact me via schwartz@cs.tu-berlin.de
#

my $PROGNAME = "lls";
my $VERSION=do{my@R=('$Revision: 1.2 $'=~/\d+/g);sprintf"%d."."%d"x$#R,@R};
my $DATE = ('$Date: 1998/03/11 08:19:20 $' =~ / ([^ ]*) /) && $1;

use Getopt::Long;
use Startup;
use OLE::Storage::Std;

my ($Doc, $Startup, $Var, $text);
my %opt = (
   "dest_base" => "analyze",
   "dirmode"   => "0700",
   "filemode"  => "0600",
);

{
   $|=1;
   GetOptions (\%opt,
      "log",
      "src_base|source_base|source_dir=s",
      "dest_base|destbase|destdir=s",
      "from_stdin|from_0|from0",
      "filemode=s",
      "dirmode=s",
      "help",
      "recurse|recursive",
      "relative",
      "extradir=s",
      "save",
   );
   usage() if $opt{"help"} || (!@ARGV && !$opt{"from_stdin"});
   fail(1) if !($Startup = new Startup);

   $Startup -> init ({
      SUB_FILES  => \&handle_files,
      SUB_STREAM => \&handle_stream,
      PROG_NAME  => $PROGNAME,
      PROG_VER   => $VERSION,
      FROM_STDIN => $opt{"from_stdin"},
      SRCPATH    => $opt{"src_base"},
      DESTPATH   => $opt{"dest_base"},
      RECURSE    => $opt{"recurse"},
      RELATIVE   => $opt{"relative"},
      FILEMODE   => $opt{"filemode"},
      DIRMODE    => $opt{"dirmode"},
   });

   $Startup->allow_logging if $opt{"log"};
   $Startup->open_log();

   require OLE::Storage;
   if (!($Var = OLE::Storage->NewVar())) {
      _error("No Var handle!"); exit 1;
   }
   $Doc = undef;
   # Please ignore the following three lines...
   $Var -> handler() -> par ("date", "string", 
      ["%02d.%02d.%04d %02d:%02d:%02d", "%02d:%02d:%02d", "<undef>"]
   );

   $Startup->go(@ARGV);

   $Startup->close_log();
   exit 1;
}

sub handle_stream {
   my ($dp) = @_;
   $Startup->log('processing <STDIN>');
   $Startup->msg_silent(0);
   $Startup->msg_nl('processing <STDIN>');
   {
      return $Startup->error("Nothing to do!") if -t STDIN;
      undef $/;
      return 0 if !($Doc = 
         OLE::Storage->open($Startup, $Var, "<stdin>", 2**4, \<>)
      );
      ppss_info();
   }
   return 0 if !main_work(0, 0, "$dp/stdin");
   $Startup->msg_finish("done");
1}

sub handle_files {
   my ($sp, $sf, $dp, $status) = @_;
   $Startup->msg_reset();

   $Startup->log("processing $sp/$sf");
   $Startup->msg("Processing \"$sf\"");

   return error ("File \"$sf\" doesn't exist!") if !$status;
   return 1 if $status < 0;
   {
      return 0 if !($Doc = OLE::Storage->open($Startup, $Var, "$sp/$sf"));
      $Startup->msg_nl();
      ppss_info();
      if ($opt{"extradir"}) {
         $dp .= "/" . basename($sf);
         return 0 if !targetdir($dp);
      }
      $status = main_work(0, 0, "$dp/".basename($sf));
      $Doc->close($infile);
   }

   return 0 if !$status;
   $Startup->msg_finish("done");
1}

sub error { $Startup -> error (@_); }
sub _error { my ($msg) = @_; $Startup -> msg_error($msg); }

sub fail {
   my ($num) = @_;
   print "Strange error #$num! Exiting!\n"; exit 0;
}

sub basename {
#
# $basename = basename($filepath)
#
   (substr($_[0], rindex($_[0],'/')+1) =~ /(^[^.]*)/) && $1;
}

sub usage {
   _print_usage (
      "$PROGNAME V$VERSION ($DATE)\n"
      ."usage: $PROGNAME {--option [arg]} file(s)",
      [
        "log           write a logfile",
        "src_base   s  Regard this as start directory in relative mode",
        "dest_base  s  Store output files based at this directory ('".
                       $opt{"dest_base"}."')",
        "from_stdin    Take input from stdin",
        "extradir   s  Save files in own directories (e.g. 'test' for 'test.doc')",
        "filemode   s  New files get access mode s (".$opt{"filemode"}.")",
        "dirmode    s  New directories get access mode s (".$opt{"dirmode"}.")",
        "recurse       Operate recursively on directories",
        "relative      Store files relatively to destdir when in recurse mode",
        "save          Save property storages to files",
      ]
   );
   exit 0;
}

sub _print_usage {
   my ($header, $bodylistR, $footer) = @_;
   print "$header\n" if $header;
   print map "   --$_\n", sort { lc($a) cmp lc($b) } @$bodylistR;
   print "$footer\n" if $footer;
}

##
##
##

sub main_work {
   # !recursive!
   my ($directory_pps, $level, $path)=@_;
   my @dir = $Doc->dirhandles($directory_pps);

   for (0 .. $#dir) {
      pps_info($_, $dir[$_], $level);
      if ($Doc->is_file($dir[$_])) {
         _error() if !pps_save($path, $dir[$_]);
      } elsif ($Doc->is_directory($dir[$_])) {
         main_work ($dir[$_], $level+1, $path);
      }
   }
1}

sub ppss_info {
   #
   # generate some information about the root entry of the property 
   # set storage
   #
   $global_pps_count=0;
   pps_info(0,0,0);
}

sub pps_info {
   #
   # generate a line of information about the current property storage
   #
   my ($i, $pps, $level) = @_;
   my ($name, $out) = ("", "");
   ($name=$Doc->name($pps)->string()) =~ s/[^_a-zA-Z0-9]/ /g;

   $out = sprintf ("%02x: " . ("   " x $level) . "%2x '%s' (pps %x) ",
                   $global_pps_count++,         $i+1, $name,   $pps);
   $out .= " " x (54 - length($out));

   # info about the properties type
   if ($Doc->is_directory($pps)) {
      $out .= $Doc->is_root($pps) ? "ROOT " : "DIR  ";
      $out .= $Doc->date($pps)->string();
   } elsif ($Doc->is_file($pps)) {
      $out .= sprintf("FILE        %6x bytes ", $Doc->size($pps));
   } else {
      $out.="unknown type!";
   }

   $Startup->msg($out);
}

sub targetdir {
#
# If none exists, create a $targetdirectory. 
#
   my $dir = shift;
   return 1 if -d $dir;
   if (mkdir ($dir, oct($opt{"dirmode"}))) {
      $Startup -> msg ("Created directory \"$targetdir\"");
      return 1;
   } else {
      _error ("Cannot create directory \"$targetdir\"");
      return 0;
   }
}

sub pps_save {
#
# 1 = pps_save(path, pps)
# 
# Copies the current property stream to an own file as: 
# targetdir/basename.xx, where xx is the hex number of the property 
# storage
#
   my ($outfilebasename, $pps) = @_;
   my $status = 1;
   my $tmp = "";

   return 1 if !($opt{"save"}||$opt{"extradir"});
   return 1 if !$outfilebasename; # warning already done
   my $outname = sprintf "$outfilebasename.%02x", $pps;

   return _error ("Cannot open \"$outname\"!")
      if ! ( open(OUT, ">".$outname)  &&  binmode(OUT) )
   ;

   if (!$Doc->read($pps, \$tmp)) {
      $status = _error (sprintf "Error while reading pps #%x", $pps);
   } elsif (!print OUT $tmp) {
      $status = _error (sprintf "Error while writing pps #%x!", $pps)
   }
   close(OUT); 

   $status;
}

__END__

=head1 NAME

lls - Laola List

=head1 SYNOPSIS

 lls V0.389 (1998/02/12)
 usage: lls {--option [arg]} file(s)
   --dest_base  s  Store output files based at this directory ('analyze')
   --dirmode    s  New directories get access mode s (0700)
   --extradir   s  Save files in own directories (e.g. 'test' for 'test.doc')
   --filemode   s  New files get access mode s (0600)
   --from_stdin    Take input from stdin
   --log           write a logfile
   --recurse       Operate recursively on directories
   --relative      Store files relatively to destdir when in recurse mode
   --save          Save property storages to files
   --src_base   s  Regard this as start directory in relative mode

=head1 DESCRIPTION

Lists the raw document structure of MS Windows Structured Storage files,
like Word and Excel documents.

Demonstration program for OLE::Storage.

=head1 SEE ALSO

L<OLE::Storage>

=head1 AUTHOR

Martin Schwartz E<lt>F<schwartz@cs.tu-berlin.de>E<gt>. 

=cut