--- loncom/publisher/lonpubdir.pm	2001/04/01 02:58:51	1.1
+++ loncom/publisher/lonpubdir.pm	2011/11/14 00:20:31	1.137
@@ -1,16 +1,31 @@
 # The LearningOnline Network with CAPA
+# Construction Space Directory Lister
 #
-# (Publication Handler
-# 
-# (TeX Content Handler
+# $Id: lonpubdir.pm,v 1.137 2011/11/14 00:20:31 raeburn Exp $
 #
-# 05/29/00,05/30,10/11 Gerd Kortemeyer)
+# Copyright Michigan State University Board of Trustees
 #
-# 11/28,11/29,11/30,12/01,12/02,12/04,12/23 Gerd Kortemeyer
-# 03/23 Guy Albertelli
-# 03/24,03/29 Gerd Kortemeyer)
+# This file is part of the LearningOnline Network with CAPA (LON-CAPA).
 #
-# 03/31 Gerd Kortemeyer
+# 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/
+#
+###
 
 package Apache::lonpubdir;
 
@@ -18,63 +33,761 @@ use strict;
 use Apache::File;
 use File::Copy;
 use Apache::Constants qw(:common :http :methods);
-
+use Apache::loncacc;
+use Apache::loncommon();
+use Apache::lonhtmlcommon();
+use Apache::londiff();
+use Apache::lonlocal;
+use Apache::lonmsg;
+use Apache::lonmenu;
+use Apache::lonnet;
+use LONCAPA;
 
 sub handler {
 
   my $r=shift;
 
-  my $fn;
+  # Validate access to the construction space and get username@domain.
 
-  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;
 
-  unless ($fn) { 
-     $r->log_reason($ENV{'user.name'}.' at '.$ENV{'user.domain'}.
-         ' trying to publish empty directory', $r->filename); 
-     return HTTP_NOT_FOUND;
-  } 
+  ($uname,$udom)=&Apache::loncacc::constructaccess($r->uri); 
+  unless (($uname) && ($udom)) {
+     return HTTP_NOT_ACCEPTABLE;
+  }
 
 # ----------------------------------------------------------- Start page output
 
-  my $uname=$ENV{'user.name'};
-  my $udom=$ENV{'user.domain'};
+  my $fn=$r->filename;
+  $fn=~s/\/$//;
+
+  my $thisdisfn=$fn;
+  my $docroot=$r->dir_config('lonDocRoot');     # Apache  londocument root.
+  $thisdisfn=~s/^\Q$docroot\E\/priv//;
 
-  $r->content_type('text/html');
-  $r->send_http_header;
+  my $resdir=$docroot.'/res'.$thisdisfn; # Resource directory
+  my $targetdir='/res'.$thisdisfn; # Publication target directory.
+  my $linkdir='/priv'.$thisdisfn;      # Full URL name of constr space.
+
+  my %bombs=&Apache::lonmsg::all_url_author_res_msg($uname,$udom);
+
+  &startpage($r, $uname, $udom, $thisdisfn);   # Put out the start of page.
+  &dircontrols($r,$uname,$udom,$thisdisfn);    # Put out actions for directory, 
+                                               # browse/upload + new file page.
+  &resourceactions($r,$uname,$udom,$thisdisfn); #Put out form used for printing/deletion etc.
 
-  $r->print('<html><head><title>LON-CAPA Construction Space</title></head>');
+  my $numdir = 0;
+  my $numres = 0;
+  
+  # Start off the directory table.
+  $r->print(&Apache::loncommon::start_data_table()
+           .&Apache::loncommon::start_data_table_header_row()
+           .'<th>'.&mt('Type').'</th>'
+           .'<th>'.&mt('Actions').'</th>'
+           .'<th>'.&mt('Name').'</th>'
+           .'<th>'.&mt('Title').'</th>'
+           .'<th colspan="2">'.&mt('Status').'</th>'
+           .'<th>'.&mt('Last Modified').'</th>'
+           .&Apache::loncommon::end_data_table_header_row()
+  );
+
+  my $filename;
+  my $dirptr=16384;		# Mask indicating a directory in stat.cmode.
+
+  opendir(DIR,$fn);
+  my @files=sort {uc($a) cmp uc($b)} (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, $cmtime,$targetdir,\%bombs,\$numdir);
+     } elsif (&Apache::loncommon::fileembstyle($extension) ne 'hdn') {
+	 &putresource($r, $udom, $uname, $filename, $thisdisfn, $resdir, 
+		     $targetdir, $linkdir, $cmtime,\%bombs,\$numres);
+     } else {
+	# "hidden" extension and not a directory, so hide it away.
+     }
+  }
+  closedir(DIR);
 
-  $r->print(
-   '<body bgcolor="#FFFFFF"><img align=right src=/adm/lonIcons/lonlogos.gif>');
+  $r->print(&Apache::loncommon::end_data_table()
+           .&Apache::loncommon::end_page()
+  );
+  return OK;  
+}
 
-  my $thisdisfn=$fn;
-  $thisdisfn=~s/^\/home\/$uname\/public_html//;
+#
+#   Output the header of the page.  This includes:
+#   - The HTML header 
+#   - The H1/H3  stuff which includes the directory.
+#
+#     startpage($r, $uame, $udom, $thisdisfn);
+#      $r     - The apache request object.
+#      $uname - User name.
+#      $udom  - Domain name the user is logged in under.
+#      $thisdisfn - Displayable version of the filename.
+
+sub startpage {
+    my ($r, $uname, $udom, $thisdisfn) = @_;
+    &Apache::loncommon::content_type($r,'text/html');
+    $r->send_http_header;
+
+    my $formaction='/priv'.$thisdisfn.'/';
+    $formaction=~s|/+|/|g;
+    &Apache::lonhtmlcommon::store_recent('construct',$formaction,$formaction);
+
+    &Apache::lonhtmlcommon::clear_breadcrumbs();
+    &Apache::lonhtmlcommon::add_breadcrumb({
+        'text'  => 'Construction Space',
+        'href'  => &Apache::loncommon::authorspace($formaction),
+    });
+    # breadcrumbs (and tools) will be created 
+    # in start_page->bodytag->innerregister
+
+    $env{'request.noversionuri'}=$formaction;
+    $r->print(&Apache::loncommon::start_page('Construction Space',undef));
+
+    $r->print(&Apache::loncommon::head_subbox(
+                &Apache::loncommon::CSTR_pageheader()));
+
+    my $esc_thisdisfn = &Apache::loncommon::escape_single($thisdisfn);
+    my $doctitle = 'LON-CAPA '.&mt('Construction Space');
+    my $newname = &mt('New Name');
+    my $pubdirscript=(<<ENDPUBDIRSCRIPT);
+<script type="text/javascript">
+top.document.title = '$esc_thisdisfn/ - $doctitle';
+// Store directory location for menu bar to find
+
+parent.lastknownpriv='/priv$esc_thisdisfn/';
+
+// Confirmation dialogues
+
+    function currdiract(theform) {
+        if (theform.dirtask.options[theform.dirtask.selectedIndex].value == 'publish') {
+            document.publishdir.filename.value = theform.filename.value;
+	    document.publishdir.submit();
+        }
+        if (theform.dirtask.options[theform.dirtask.selectedIndex].value == 'editmeta') {
+            top.location=theform.filename.value+'default.meta'
+        }
+        if (theform.dirtask.options[theform.dirtask.selectedIndex].value == 'printdir' ) {
+            document.printdir.postdata.value=theform.filename.value
+            document.printdir.submit();
+        }
+        if (theform.dirtask.options[theform.dirtask.selectedIndex].value == "delete") {
+              var delform = document.delresource
+              delform.filename.value = theform.filename.value
+              delform.submit()
+        }
+    }
   
-  $r->print('<h1>Construction Space Directory <tt>'.$thisdisfn.'</tt></h1>');
+    function checkUpload(theform) {
+        if (theform.file == '') {
+            alert("Please use 'Browse..' to choose a file first, before uploading")
+            return 
+        }
+        theform.submit()  
+    }
+
+    function SetPubDir(theform,printForm) {
+        if (theform.diraction.options[theform.diraction.selectedIndex].value == "open") {
+            top.location = theform.openname.value
+            return
+        }
+        if (theform.diraction.options[theform.diraction.selectedIndex].value == "publish") {
+            theform.submit();
+        }
+        if (theform.diraction.options[theform.diraction.selectedIndex].value == "editmeta") {
+            top.location=theform.filename.value+'default.meta'
+        }
+        if (theform.diraction.options[theform.diraction.selectedIndex].value == "printdir") {
+            theform.action = '/adm/printout'
+            theform.postdata.value = theform.filename.value
+            theform.submit()
+        }
+        if (theform.diraction.options[theform.diraction.selectedIndex].value == "delete") {
+              var delform = document.delresource
+              delform.filename.value = theform.filename.value
+              delform.submit()
+        }
+        return
+    }
+    function SetResChoice(theform) {
+      var activity = theform.reschoice.options[theform.reschoice.selectedIndex].value
+      if ((activity == 'rename') || (activity == 'copy') || (activity == 'move')) {
+          changename(theform,activity)
+      }
+      if (activity == 'publish') {
+          var pubform = document.pubresource
+          pubform.filename.value = theform.filename.value
+          pubform.submit()
+      }
+      if (activity == 'delete') {
+          var delform = document.delresource
+          delform.filename.value = theform.filename.value
+          delform.submit()
+      }
+      if (activity == 'obsolete') {
+          var pubform = document.pubresource
+          pubform.filename.value = theform.filename.value
+          pubform.makeobsolete.value=1;
+          pubform.submit()
+      }
+      if (activity == 'print') {
+          document.printresource.postdata.value = theform.filename.value
+          document.printresource.submit()
+      }
+      if (activity == 'retrieve') {
+          document.retrieveres.filename.value = theform.filename.value
+          document.retrieveres.submit()
+      }
+      if (activity == 'cleanup') {
+          document.cleanup.filename.value = theform.filename.value
+          document.cleanup.submit()
+      }
+      return
+    }
+    function changename(theform,activity) {
+        var oldname=theform.dispfilename.value;
+        var newname=prompt('$newname',oldname);
+        if (newname == "" || !newname || newname == oldname)  {
+            return
+        }
+        document.moveresource.newfilename.value = newname
+        document.moveresource.filename.value = theform.filename.value
+        document.moveresource.action.value = activity
+        document.moveresource.submit();
+    }
+</script>
+ENDPUBDIRSCRIPT
+    $r->print($pubdirscript);
+}
 
-  my $docroot=$r->dir_config('lonDocRoot');
+sub dircontrols {
+    my ($r,$uname,$udom,$thisdisfn) = @_;
+    my %lt=&Apache::lonlocal::texthash(
+                                       cnpd => 'Cannot publish directory',
+                                       cnrd => 'Cannot retrieve directory',
+                                       mcdi => 'Must create new subdirectory inside a directory',
+                                       pubr => 'Publish this Resource',
+                                       pubd => 'Publish this Directory',
+                                       dedr => 'Delete Directory',
+                                       rtrv => 'Retrieve Old Version',
+                                       list => 'List Directory',
+                                       uplo => 'Upload file',  
+                                       dele => 'Delete',
+                                       edit => 'Edit Metadata', 
+                                       sela => 'Select Action',
+                                       nfil => 'New file',
+                                       nhtm => 'New HTML file',
+                                       nprb => 'New problem',
+                                       npag => 'New assembled page',
+                                       nseq => 'New assembled sequence',
+                                       ncrf => 'New custom rights file',
+                                       nsty => 'New style file',
+                                       nlib => 'New library file',
+                                       nbt  => 'New bridgetask file',
+                                       nsub => 'New subdirectory',
+                                       renm => 'Rename current file to',
+                                       move => 'Move current file to',
+                                       copy => 'Copy current file to',
+                                       type => 'Type Name Here',
+                                       go   => 'Go',
+                                       prnt => 'Print contents of directory',
+                                       crea => 'Create a new directory or LON-CAPA document',
+				       acti => 'Actions for current directory',
+				       updc => 'Upload a new document',
+				       pick => 'Please select an action to perform using the new filename',
+                                      );
+    my $mytype = $lt{'type'}; # avoid conflict with " and ' in javascript
+    $r->print(<<END);
+<div class="LC_columnSection">
+  <div>
+    <form name="curractions" method="post" action="">
+      <fieldset>
+        <legend>$lt{'acti'}</legend>
+        <select name="dirtask" onchange="currdiract(this.form)">
+            <option>$lt{'sela'}</option>
+            <option value="publish">$lt{'pubd'}</option>
+            <option value="editmeta">$lt{'edit'}</option>
+            <option value="printdir">$lt{'prnt'}</option>
+            <option value="delete">$lt{'dedr'}</option>
+        </select>
+        <input type="hidden" name="filename" value="/priv$thisdisfn/" />
+      </fieldset>
+    </form>
+    <form name="publishdir" method="post" action="/adm/publish" target="_parent">
+      <input type="hidden" name="pubrec" value="" />
+      <input type="hidden" name="filename" value="" />
+    </form>
+    <form name="printdir" method="post" action="/adm/printout" target="_parent">
+      <input type="hidden" name="postdata" value="" />
+    </form>
+  </div>
+
+  <div>
+    <form name="upublisher" enctype="multipart/form-data" method="post" action="/adm/upload" target="_parent">
+      <fieldset>
+        <legend>$lt{'updc'}</legend>
+        <input type="hidden" name="filename" value="/priv$thisdisfn/" />
+        <input type="file" name="upfile" size="20" />
+        <input type="button" value="$lt{'uplo'}"  onclick="checkUpload(this.form)" />
+      </fieldset>
+    </form>
+  </div>
+
+  <div>
+    <form name="fileaction" method="post" action="/adm/cfile" target="_parent">
+      <fieldset>
+              <legend>$lt{'crea'}</legend>
+	      <span class="LC_nobreak">
+		<input type="hidden" name="filename" value="/priv$thisdisfn/" />
+                  <script type="text/javascript">
+                    function validate_go() {
+                        var selected = document.fileaction.action.selectedIndex;
+                        if (selected == 0) {
+                            alert('$lt{'pick'}');
+                        } else {
+                            document.fileaction.submit();
+                        }
+                    }
+                  </script>
+		  <select name="action">
+		    <option value="none">$lt{'sela'}</option>
+		    <option value="newfile">$lt{'nfil'}:</option>
+		    <option value="newhtmlfile">$lt{'nhtm'}:</option>
+		    <option value="newproblemfile">$lt{'nprb'}:</option>
+                    <option value="newpagefile">$lt{'npag'}:</option>
+                    <option value="newsequencefile">$lt{'nseq'}:</option>
+                    <option value="newrightsfile">$lt{'ncrf'}:</option>
+                    <option value="newstyfile">$lt{'nsty'}:</option>
+                    <option value="newtaskfile">$lt{'nbt'}:</option>
+                    <option value="newlibraryfile">$lt{'nlib'}:</option>
+	            <option value="newdir">$lt{'nsub'}:</option>
+		  </select>&nbsp;<input type="text" name="newfilename" value="$lt{'type'}" onfocus="if (this.value == '$mytype') this.value=''" />&nbsp;<input type="button" value="Go" onclick="validate_go();" />
+		 </span>
+      </fieldset>
+    </form>
+  </div>
+</div>
+END
+}
 
-  my $resdir=$docroot.'/res/'.$udom.'/'.$uname.$thisdisfn;
-  my $linkdir='/~'.$uname.$thisdisfn;
+sub resourceactions {
+    my ($r,$uname,$udom,$thisdisfn) = @_;
+    $r->print(<<END);
+       <form name="moveresource" action="/adm/cfile" target="_parent" method="post">
+         <input type="hidden" name="filename" value="" />
+         <input type="hidden" name="newfilename" value="" />
+         <input type="hidden" name="action" value="" />
+       </form>
+       <form name="delresource" action="/adm/cfile" target="_parent" method="post">
+         <input type="hidden" name="filename" value="" />
+         <input type="hidden" name="action" value="delete" />
+       </form>
+       <form name="pubresource" action="/adm/publish" target="_parent" method="post">
+         <input type="hidden" name="filename" value="" />
+         <input type="hidden" name="makeobsolete" value="0" />
+       </form>
+       <form name="printresource" action="/adm/printout" target="_parent" method="post">
+           <input type="hidden" name="postdata" value="" />
+       </form>
+       <form name="retrieveres" action="/adm/retrieve" target="_parent" method="post">
+           <input type="hidden" name="filename" value="" />
+       </form>
+       <form name="cleanup" action="/adm/cleanup" target="_parent" method="post">
+           <input type="hidden" name="filename" value="" />
+       </form>
+END
+}
 
-    my $filename;
-    opendir(DIR,$fn);
-       while ($filename=readdir(DIR)) {
-           $filename=~/\.(\w+)$/;
-           if (($1 ne 'meta') && ($1 ne 'save') && ($1 ne 'log')) {
-	      $r->print($resdir.' - '.$linkdir.' = '.$filename.'<br>');
-	   }
-       }
-    closedir(DIR);
+#
+#   Get the title string or "[untitled]" if the file has no title metadata:
+#   Without the latter substitution, it's impossible to examine metadata for
+#   untitled resources.  Resources may be legitimately untitled, to prevent
+#   searches from locating them.
+#
+#   $str = getTitleString($fullname);
+#       $fullname - Fully qualified filename to check.
+#
+sub getTitleString {
+    my $fullname = shift;
+    my $title    = &Apache::lonnet::metadata($fullname, 'title');
+
+    unless ($title) {
+	$title = "[".&mt('untitled')."]";
+    }
+    return $title;
+}
 
+sub getCopyRightString {
+    my $fullname = shift;
+    return &Apache::lonnet::metadata($fullname, 'copyright');
+}
 
-  $r->print('</body></html>');
-  return OK;  
+sub getSourceRightString {
+    my $fullname = shift;
+    return &Apache::lonnet::metadata($fullname, 'sourceavail');
+}
+#
+#  Put out a directory table row:
+#    putdirectory(r, base, here, dirname, modtime, targetdir, bombs, numdir)
+#      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.
+#      targetdir - Publication target directory.
+#      bombs     - Reference to hash of URLs with runtime error messages.
+#      numdir    - Reference to scalar used to track number of sub-directories
+#                  in directory (used in form name for each "actions" dropdown).
+#
+sub putdirectory {
+    my ($r, $reqfile, $here, $dirname, $modtime, $targetdir, $bombs, $numdir) = @_;
+
+# construct the display filename: the directory name unless ..:
+   
+    my $actionitem;
+ 
+    my $disfilename = $dirname;
+# Don't display directory itself, and there is no way up from root directory
+    unless ((($dirname eq '..') && ($reqfile=~/^\/[^\/]+\/[^\/]+$/)) || ($dirname eq '.')) {
+	my $kaputt=0;
+        if (ref($bombs) eq 'HASH') {
+	    foreach my $key (keys(%{$bombs})) {
+	        if ($key =~ m{^\Q$targetdir/$disfilename\E/}) { $kaputt=1; last; }
+	    }
+        }
+#
+# Get the metadata from that directory's default.meta to display titles
+#
+	%Apache::lonpublisher::metadatafields=();
+	%Apache::lonpublisher::metadatakeys=();
+	&Apache::lonpublisher::metaeval(
+                 &Apache::lonnet::getfile($r->dir_config('lonDocRoot').$here.'/'.$dirname.'/default.meta')
+                                       );
+        if ($dirname eq '..') {
+            $actionitem = &mt('Go to ...');
+            $disfilename = '<i>'.&mt('Parent Directory').'</i>';
+        } else {
+            $actionitem = 
+                    '<form name="dirselect_'.$$numdir.
+                    '" action="/adm/publish" target="_parent">'.
+                    '<select name="diraction" onchange="SetPubDir(this.form,document)">'.
+                      '<option selected="selected">'.&mt('Select action').'</option>'.
+                      '<option value="open">'.&mt('Open').'</option>'.
+                      '<option value="publish">'.&mt('Publish').'</option>'.
+                      '<option value="editmeta">'.&mt('Edit Metadata').'</option>'.
+                      '<option value="printdir">'.&mt('Print directory').'</option>'.
+                      '<option value="delete">'.&mt('Delete directory').'</option>'.
+                    '</select>'.
+                     '<input type="hidden" name="filename" value="'.&HTML::Entities::encode($here.'/'.$dirname,'<>&"').'/" />'.
+                     '<input type="hidden" name="openname" value="'.$here.'/'.$dirname.'/" />'.
+                     '<input type="hidden" name="postdata" value="" />'.
+                   '</form>';
+            $$numdir ++;
+        }
+	$r->print('<tr class="LC_browser_folder">'.
+		  '<td><img src="'.
+		  $Apache::lonnet::perlvar{'lonIconsURL'}.'/navmap.folder.closed.gif" alt="folder" /></td>'.
+		  '<td>'.$actionitem.'</td>'.
+		  '<td><span class="LC_filename"><a href="'.&HTML::Entities::encode($here.'/'.$dirname,'<>&"').'/" target="_parent">'.
+		  $disfilename.'</a></span></td>'.
+		        '<td colspan="3">'.($kaputt?&Apache::lonhtmlcommon::authorbombs($targetdir.'/'.$disfilename.'/'):'').$Apache::lonpublisher::metadatafields{'title'});
+	if ($Apache::lonpublisher::metadatafields{'subject'} ne '') {
+	    $r->print(' <i>'.
+		      $Apache::lonpublisher::metadatafields{'subject'}.
+		      '</i> ');
+	}
+	$r->print($Apache::lonpublisher::metadatafields{'keywords'}.'</td>'.
+		  '<td>'.&Apache::lonlocal::locallocaltime($modtime).'</td>'.
+		  "</tr>\n");
+    }
+    return OK;
 }
+#
+#   Put a table row for a file resource.
+#
+sub putresource {
+    my ($r, $udom, $uname, $filename, $thisdisfn, 
+	$resdir, $targetdir, $linkdir,
+	$cmtime,$bombs,$numres) = @_;
+    &Apache::lonnet::devalidate_cache_new('meta',$targetdir.'/'.$filename);
+    my $pubstatus = 'unpublished';
+    my $status=&mt('Unpublished');
+    my $css_class='LC_browser_file';
+    my $title='&nbsp;';
+    my $publish_button=&mt('Publish');
+    my $cstr_dir = $r->dir_config('lonDocRoot').'/priv/'.$udom.'/'.$uname.'/'.$thisdisfn.'/';
+    my $linkfilename=&HTML::Entities::encode('/priv'.$thisdisfn.'/'.$filename,'<>&"');
+
+    if (-e $resdir.'/'.$filename) {
+        my $same=0;
+	my ($rdev,$rino,$rmode,$rnlink,
+	    $ruid,$rgid,$rrdev,$rsize,
+	    $ratime,$rmtime,$rctime,
+	    $rblksize,$rblocks)=stat($resdir.'/'.$filename);
+        if ($rmtime>=$cmtime) {
+           $same=1;
+        } else {
+           if (&Apache::londiff::are_different_files($resdir.'/'.$filename,
+						     $cstr_dir.'/'.$filename)) {
+              $same=0;
+           } else {
+              $same=1;
+           }
+        }
+	my $meta_cmtime = (stat($cstr_dir.'/'.$filename.'.meta'))[9];
+	my $meta_rmtime = (stat($resdir.'/'.$filename.'.meta'))[9];
+	my $meta_same = 1;
+	if ($meta_rmtime < $meta_cmtime
+	    && &Apache::londiff::are_different_files($resdir.'/'.$filename.'.meta',
+						     $cstr_dir.'/'.$filename.'.meta')) {
+	    $meta_same = 0;
+	}
+	$publish_button=&mt('Re-publish');
+
+        my $rights_status =
+            &mt(&getCopyRightString($targetdir.'/'.$filename)).', ';
+
+        my %lt_SourceRight = &Apache::lonlocal::texthash(
+               'open'   => 'Source: open',
+               'closed' => 'Source: closed',
+        );
+        $rights_status .=
+            $lt_SourceRight{&getSourceRightString($targetdir.'/'.$filename)};
+
+	$title = '<a href="'.$targetdir.'/'.$filename.
+	    '.meta" target="cat">'.
+	    &getTitleString($targetdir.'/'.$filename).'</a>';
+	if ($same) {
+	    if (&Apache::lonnet::metadata($targetdir.'/'.$filename,'obsolete')) {
+                $pubstatus = 'obsolete';
+		$status=&mt('Obsolete');
+            } else {
+		if (!$meta_same) {
+		    $pubstatus = 'metamodified';
+		} else {
+		    $pubstatus = 'published';
+		}
+		$status=&mt('Published').
+		    '<br />'. $rights_status;
+	    }
+	} else {
+            $pubstatus = 'modified';
+	    $status=&mt('Modified').
+		'<br />'. $rights_status;
+	    if (&Apache::loncommon::fileembstyle(($filename=~/\.(\w+)$/)) eq 'ssi') {
+		$status.='<br /><a href="/adm/diff?filename='.$linkfilename.
+		    '&amp;versiontwo=priv" target="cat">'.&mt('Diffs').'</a>';
+	    }
+	} 
+
+	$title.="\n".'<br /><a href="'.$linkfilename.'.meta">'. 
+	    ($$bombs{$targetdir.'/'.$filename}?'<img src="/adm/lonMisc/bomb.gif" border="0" alt="'.&mt('bomb').'" />':&mt('Edit Metadata')).'</a>';
+
+	if (!$meta_same) {
+	    $title = &mt('Metadata Modified').'<br />'.$title.
+		'<br /><a href="/adm/diff?filename=/priv/'.$linkfilename.'.meta'.
+		'&amp;versiontwo=priv" target="cat">'.&mt('Metadata Diffs').'</a>';
+	    $title.="\n".'<br /><a href="/adm/retrieve?filename='.$linkfilename.'.meta" target="_parent">'.&mt('Retrieve Metadata').'</a>';
+	}
+	$status.="\n".'<br /><a href="/adm/retrieve?filename='.$linkfilename.'" target="_parent">'.&mt('Retrieve').'</a>';
+    }
+    my $editlink='';
+    my $editlink2='';
+    if ($filename=~/\.(xml|html|htm|xhtml|xhtm|sty)$/) {
+	$editlink=' <br />(<a href="'.$linkdir.'/'.$filename.'?forceedit=1" target="_parent">'.&mt('Edit').'</a>)';
+    }
+    if ($filename=~/$LONCAPA::assess_re/) {
+	$editlink=' (<a href="'.$linkdir.'/'.$filename.'?forceedit=1" target="_parent">'.&mt('EditXML').'</a>)';
+	$editlink2=' <br />(<a href="'.$linkdir.'/'.$filename.'?forceColoredit=1" target="_parent">'.&mt('Edit').'</a>)';
+    }
+    if ($filename=~/\.(problem|exam|quiz|assess|survey|form|library|xml|html|htm|xhtml|xhtm|sty)$/) {
+	$editlink.=' (<a href="/adm/cleanup?filename='.$linkfilename.'" target="_parent">'.&mt('Clean Up').')</a>';
+    }
+    if ($filename=~/\.(zip|tar|bz2|gz|tar.gz|tar.bz2|tgz)$/) {
+	$editlink=' (<a target="_parent" href="/adm/cfile?decompress='.$linkfilename.'">'.&mt('Decompress').'</a>)';
+    }
+    my $pub_select = '';
+    &create_pubselect($r,\$pub_select,$udom,$uname,$thisdisfn,$filename,$resdir,$pubstatus,$publish_button,$numres);
+    $r->print(&Apache::loncommon::start_data_table_row().
+	      '<td>'.($filename=~/[\#\~]$/?'&nbsp;':
+		      '<img src="'.&Apache::loncommon::icon($filename).'" alt="" />').'</td>'.
+              '<td>'.$pub_select.'</td>'.
+	      '<td><span class="LC_filename">'.
+	      '<a href="'.$linkdir.'/'.$filename.'" target="_parent">'.
+               $filename.'</a></span>'.$editlink2.$editlink.
+	      '</td>'.
+	      '<td>'.$title.'</td>'.
+              '<td class="LC_browser_file_'.$pubstatus.'">&nbsp;&nbsp;</td>'. # Display publication status
+              '<td>'.$status.'</td>'.
+	      '<td>'.&Apache::lonlocal::locallocaltime($cmtime).'</td>'.
+	      &Apache::loncommon::end_data_table_row()
+    );
+    return OK;
+}
+
+sub create_pubselect {
+    my ($r,$pub_select,$udom,$uname,$thisdisfn,$filename,$resdir,$pubstatus,$publish_button,$numres) = @_;
+    $$pub_select = '
+<form name="resselect_'.$$numres.'" action="">
+<select name="reschoice"  onchange="SetResChoice(this.form)">
+<option>'.&mt('Select action').'</option>'.
+'<option value="copy">'.&mt('Copy').'</option>';
+    if ($pubstatus eq 'obsolete' || $pubstatus eq 'unpublished') {
+        $$pub_select .= 
+'<option value="rename">'.&mt('Rename').'</option>'.
+'<option value="move">'.&mt('Move').'</option>'.
+'<option value="delete">'.&mt('Delete').'</option>';
+    } else {
+        $$pub_select .= '
+<option value="obsolete">'.&mt('Mark obsolete').'</option>';
+    }
+# check for versions
+    my $versions = &check_for_versions($r,'/'.$filename,$udom,$uname);
+    if ($versions > 0) {
+        $$pub_select .='
+<option value="retrieve">'.&mt('Retrieve old version').'</option>';
+    }
+    $$pub_select .= '
+<option value="publish">'.$publish_button.'</option>'.
+'<option value="cleanup">'.&mt('Clean up').'</option>'.
+'<option value="print">'.&mt('Print').'</option>'.
+'</select>
+<input type="hidden" name="filename" value="/priv'.
+ &HTML::Entities::encode($thisdisfn.'/'.$filename,'<>&"').'" />
+ <input type="hidden" name="dispfilename" value="'.
+ &HTML::Entities::encode($filename).'" /></form>';
+    $$numres ++;
+}
+
+sub check_for_versions {
+    my ($r,$fn,$udom,$uname) = @_;
+    my $versions = 0;
+    my $docroot=$r->dir_config('lonDocRoot');
+    my $resfn=$docroot.'/res/'.$udom.'/'.$uname.$fn;
+    my $resdir=$resfn;
+    $resdir=~s/\/[^\/]+$/\//;
+    $fn=~/\/([^\/]+)\.(\w+)$/;
+    my $main=$1;
+    my $suffix=$2;
+    opendir(DIR,$resdir);
+    while (my $filename=readdir(DIR)) {
+        if ($filename=~/^\Q$main\E\.(\d+)\.\Q$suffix\E$/) {
+            $versions ++;        
+        }
+    }
+    return $versions;
+}
+
+1;
+__END__
+
+
+=head1 NAME
+
+Apache::lonpubdir - Construction space directory lister
+
+=head1 SYNOPSIS
+
+Invoked (for various locations) by /etc/httpd/conf/srm.conf:
+
+ <LocationMatch "^/+priv.*/$">
+ 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
+
+=head1 SUBROUTINES:
+
+=over
+
+=item startpage($r, $uame, $udom, $thisdisfn)
+
+Output the header of the page.  This includes:
+ - The HTML header 
+ - The H1/H3  stuff which includes the directory.
+ 
+    startpage($r, $uame, $udom, $thisdisfn);
+        $r     - The apache request object.
+        $uname - User name.
+        $udom  - Domain name the user is logged in under.
+        $thisdisfn - Displayable version of the filename.
+
+=item getTitleString($fullname)
+
+    Get the title string or "[untitled]" if the file has no title metadata:
+    Without the latter substitution, it's impossible to examine metadata for
+    untitled resources.  Resources may be legitimately untitled, to prevent
+    searches from locating them.
+    
+    $str = getTitleString($fullname);
+        $fullname - Fully qualified filename to check.
+
+=item putdirectory($r, $base, $here, $dirname, $modtime, $targetdir, $bombs,
+                   $numdir)
+
+    Put out a directory table row:
+    
+        $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.
+        targetdir - Publication target directory.
+        bombs     - Reference to hash of URLs with runtime error messages.
+        numdir    - Reference to scalar used to track number of sub-directories
+                    in directory (used in form name for each "actions" dropdown).
+
+=back
+
+=cut
+