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File:  [LON-CAPA] / loncom / publisher / lonpubdir.pm
Revision 1.21: download - view: text, annotated - select for diffs
Tue Feb 5 12:54:46 2002 UTC (22 years, 3 months ago) by foxr
Branches: MAIN
CVS tags: HEAD
- Rearrange columns and remove color coding.
- Start code restructuring in to functionally distinct subs from soup of code.

# The LearningOnline Network with CAPA
# (Publication Handler
#
# $Id: lonpubdir.pm,v 1.21 2002/02/05 12:54:46 foxr Exp $
#
# Copyright Michigan State University Board of Trustees
#
# This file is part of the LearningOnline Network with CAPA (LON-CAPA).
#
# LON-CAPA 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.
#
# LON-CAPA 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 LON-CAPA; if not, write to the Free Software
# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
#
# /home/httpd/html/adm/gpl.txt
#
# http://www.lon-capa.org/
#
# 
# (TeX Content Handler
#
# YEAR=2000
# 05/29/00,05/30,10/11 Gerd Kortemeyer)
#
# 11/28,11/29,11/30,12/01,12/02,12/04,12/23 Gerd Kortemeyer
# YEAR=2001
# 03/23 Guy Albertelli
# 03/24,03/29 Gerd Kortemeyer)
# 03/31,04/03,05/09,06/23,08/18,08/20 Gerd Kortemeyer
# 12/15 Scott Harrison
# 12/28 Gerd Kortemeyer
#
###

package Apache::lonpubdir;

use strict;
use Apache::File;
use File::Copy;
use Apache::Constants qw(:common :http :methods);
use Apache::loncacc;
use Apache::loncommon();

sub handler {

  my $r=shift;

  my $fn;

  if ($ENV{'form.filename'}) {
      $fn=$ENV{'form.filename'};
      $fn=~s/^http\:\/\/[^\/]+\/\~(\w+)/\/home\/$1\/public_html/;
      $fn=~s/\/[^\/]+$//;
  } else {
      $fn=$r->filename();
  }

  my $uname;
  my $udom;

  ($uname,$udom)=
    &Apache::loncacc::constructaccess(
             $fn,$r->dir_config('lonDefDomain')); 
  unless (($uname) && ($udom)) {
     $r->log_reason($uname.' at '.$udom.
         ' trying to publish file '.$ENV{'form.filename'}.
         ' ('.$fn.') - not authorized', 
         $r->filename); 
     return HTTP_NOT_ACCEPTABLE;
  }
     
  $fn=~s/\/$//;

  unless ($fn) { 
     $r->log_reason($ENV{'user.name'}.' at '.$ENV{'user.domain'}.
         ' trying to list empty directory', $r->filename); 
     return HTTP_NOT_FOUND;
  } 

# ----------------------------------------------------------- Start page output


  $r->content_type('text/html');
  $r->send_http_header;

  $r->print('<html><head><title>LON-CAPA Construction Space</title></head>');

  $r->print(
   '<body bgcolor="#FFFFFF"><img align=right src=/adm/lonIcons/lonlogos.gif>');

  my $thisdisfn=$fn;
  $thisdisfn=~s/^\/home\/$uname\/public_html//;
  
  $r->print('<h1>Construction Space Directory <tt>'.$thisdisfn.'/</tt></h1>');
  
  if (($uname ne $ENV{'user.name'}) || ($udom ne $ENV{'user.domain'})) {
          $r->print('<h3>Co-Author: '.$uname.' at '.$udom.
               '</h3>');
  }


  my $docroot=$r->dir_config('lonDocRoot');

  my $resdir=$docroot.'/res/'.$udom.'/'.$uname.$thisdisfn;
  my $targetdir=$udom.'/'.$uname.$thisdisfn;
  my $linkdir='/~'.$uname.$thisdisfn;

  $r->print('<table border=2>'.
 '<tr><th>Actions</th><th>Name</th><th>Title</th>'.
 '<th>Status</th><th>Last Modified</th></tr>');

  my $filename;
  my $dirptr=16384;

  opendir(DIR,$fn);
  my @files=sort(readdir(DIR));
  foreach my $filename (@files) {
     my ($cdev,$cino,$cmode,$cnlink,
         $cuid,$cgid,$crdev,$csize,
         $catime,$cmtime,$cctime,
         $cblksize,$cblocks)=stat($fn.'/'.$filename);

     my $extension='';
     if ($filename=~/\.(\w+)$/) { $extension=$1; }
     if ($cmode&$dirptr) {
	 putdirectory($r, $thisdisfn, $linkdir, $filename, $cmtime);
     } elsif (&Apache::loncommon::fileembstyle($extension) ne 'hdn') {
         my $status='Unpublished';
         my $title='&nbsp;';
         if (-e $resdir.'/'.$filename) {
            my ($rdev,$rino,$rmode,$rnlink,
                $ruid,$rgid,$rrdev,$rsize,
                $ratime,$rmtime,$rctime,
                $rblksize,$rblocks)=stat($resdir.'/'.$filename);
            if ($rmtime>=$cmtime) {
		$status='Published';
                $title=
 '<a href="/res/'.$targetdir.'/'.$filename.'.meta" target=cat>'.
 &Apache::lonnet::metadata($targetdir.'/'.$filename,'title').'</a>';
            } else {
                $status='Modified';
                $title=
 '<a href="/res/'.$targetdir.'/'.$filename.'.meta" target=cat>'.
 &Apache::lonnet::metadata($targetdir.'/'.$filename,'title').'</a>';
                if 
         (&Apache::loncommon::fileembstyle(($filename=~/\.(\w+)$/)) eq 'ssi') {
                   $status.='<br><a href="/adm/diff?filename=/~'.$uname.
                                         $thisdisfn.'/'.$filename.
		       '&versionone=priv" target=cat>Diffs</a>';
	        }
            }   
            $status.='<br><a href="/adm/retrieve?filename=/~'.$uname.
              $thisdisfn.'/'.$filename.'" target=cat>Retrieve</a>';
	 }
	 $r->print('<tr>'.
		   '<td><a target="_parent" href="/adm/publish?filename=/~'.
		        $uname.$thisdisfn.'/'.$filename.'">'.'Publish</a>'.
		   '</td>'.
		   '<td>'.
		      '<a href="'.$linkdir.'/'.$filename.'">'.$filename.'</a>'.
		   '</td>'.
		   '<td>'.$title.'</td>'.
		   '<td>'.$status.'</td>'.
		   '<td>'.localtime($cmtime).'</td>'.
		   '</tr>');
     } else {
	# "hidden" extension and not a directory, so hide it away.
     }
  }
  closedir(DIR);

  $r->print('</table></body></html>');
  return OK;  
}
#
#  Put out a directory table row:
#    putdirectory(r, base, here, dirname, modtime)
#      r       - Apache request object.
#      reqfile - File in request.
#      here    - Where we are in directory tree.
#      dirname - Name of directory special file.
#      modtime - Encoded modification time.
# 
sub putdirectory {
    my ($r, $reqfile, $here, $dirname, $modtime) = @_;
  
    # construct the display filename: the directory name unless ..:
    
    my $disfilename = $dirname;
    if ($dirname eq '..') {
	$disfilename = '<i>Parent Directory</i>';
    }
    unless (( ($dirname eq '..') && ($reqfile eq '')) ||
	    ($dirname eq '.')) {
	$r->print('<tr>'.
		  '<td>Click to cwd</td>'.
		  '<td><a href="'.$here.'/'.$dirname.'/">'.
		  $disfilename.'</a></td>'.
		        '<td>&nbsp;</td>'.
		  '<td>&nbsp;</td>'.
		  '<td>'.localtime($modtime).'</td>'.
		  '</tr>');
    }	
    return OK;
}
1;
__END__

=head1 NAME

Apache::lonpubdir - Publication Handler for Directories

=head1 SYNOPSIS

Invoked (for various locations) by /etc/httpd/conf/srm.conf:

 <LocationMatch "^/\~.*/$">
 PerlAccessHandler       Apache::loncacc
 SetHandler perl-script
 PerlHandler Apache::lonpubdir
 ErrorDocument     403 /adm/login
 ErrorDocument     404 /adm/notfound.html
 ErrorDocument     406 /adm/unauthorized.html
 ErrorDocument	  500 /adm/errorhandler
 </LocationMatch>

 <Location /adm/pubdir>
 PerlAccessHandler       Apache::lonacc
 SetHandler perl-script
 PerlHandler Apache::lonpubdir
 ErrorDocument     403 /adm/login
 ErrorDocument     404 /adm/notfound.html
 ErrorDocument     406 /adm/unauthorized.html
 ErrorDocument	  500 /adm/errorhandler
 </Location>

=head1 INTRODUCTION

This module publishes a directory of files.

This is part of the LearningOnline Network with CAPA project
described at http://www.lon-capa.org.

=head1 HANDLER SUBROUTINE

This routine is called by Apache and mod_perl.

=over 4

=item *

read in information

=item *

start page output

=item *

run through list of files and attempt to publish unhidden files

=back

=cut
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