--- loncom/publisher/lonpubdir.pm	2001/04/01 02:58:51	1.1
+++ loncom/publisher/lonpubdir.pm	2004/12/02 19:45:39	1.68
@@ -1,16 +1,31 @@
 # The LearningOnline Network with CAPA
+# Construction Space Directory Lister
 #
-# (Publication Handler
-# 
-# (TeX Content Handler
+# $Id: lonpubdir.pm,v 1.68 2004/12/02 19:45:39 raeburn 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.
 #
-# 05/29/00,05/30,10/11 Gerd Kortemeyer)
+# 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
 #
-# 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)
+# /home/httpd/html/adm/gpl.txt
 #
-# 03/31 Gerd Kortemeyer
+# http://www.lon-capa.org/
+#
+###
 
 package Apache::lonpubdir;
 
@@ -18,7 +33,13 @@ 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::lonlocal;
+use Apache::lonmsg;
+use Apache::lonmenu;
+use Apache::lonnet;
 
 sub handler {
 
@@ -26,55 +47,699 @@ sub handler {
 
   my $fn;
 
-  if ($ENV{'form.filename'}) {
-      $fn=$ENV{'form.filename'};
-      $fn=~s/^http\:\/\/[^\/]+\/\~(\w+)/\/home\/$1\/public_html/;
-      $fn=~s/\/[^\/]+$//;
-  } else {
-      $fn=$r->filename();
+
+
+  $fn = getEffectiveUrl($r);
+
+  # Validate access to the construction space and get username@domain.
+
+  my $uname;
+  my $udom;
+
+  ($uname,$udom)=
+    &Apache::loncacc::constructaccess(
+             $fn,$r->dir_config('lonDefDomain')); 
+  unless (($uname) && ($udom)) {
+     $r->log_reason($uname.' at '.$udom.
+         ' trying to list directory '.$ENV{'form.filename'}.
+         ' ('.$fn.') - not authorized', 
+         $r->filename); 
+     return HTTP_NOT_ACCEPTABLE;
   }
-     
+
+  # Remove trailing / from directory name.
+
+  $fn=~s/\/$//;
 
   unless ($fn) { 
      $r->log_reason($ENV{'user.name'}.' at '.$ENV{'user.domain'}.
-         ' trying to publish empty directory', $r->filename); 
+         ' trying to list empty directory', $r->filename); 
      return HTTP_NOT_FOUND;
   } 
 
 # ----------------------------------------------------------- Start page output
 
-  my $uname=$ENV{'user.name'};
-  my $udom=$ENV{'user.domain'};
+  my $thisdisfn=$fn;
+  $thisdisfn=~s/^\/home\/$uname\/public_html//;	# subdirectory part of
+                                                # construction space. 
+  my $docroot=$r->dir_config('lonDocRoot');     # Apache  londocument root.
+
+  my $resdir=$docroot.'/res/'.$udom.'/'.$uname.$thisdisfn; # Resource directory
+  my $targetdir=$udom.'/'.$uname.$thisdisfn; # Publiction target directory.
+  my $linkdir='/priv/'.$uname.$thisdisfn;      # Full URL name of constr space.
+
+  my %bombs=&Apache::lonmsg::all_url_author_res_msg($uname,$udom);
+
+  &startpage($r, $uname, $udom, $thisdisfn);   # Put out the start of page.
+  if ($ENV{'environment.remote'} eq 'off') {
+      &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->content_type('text/html');
-  $r->send_http_header;
+  my $numdir = 0;
+  my $numres = 0;
+  
+  # Start off the directory table.
+  $r->print('<h3>Directory Contents:</h3>');
+  $r->print('<table border="0" cellspacing="2" cellpadding="2"><tr>'.
+            '<th bgcolor="#DDDDDD">'.&mt('Type').'</th>'.
+            '<th bgcolor="#DDDDDD">'.&mt('Actions').'</th>'.
+            '<th bgcolor="#DDDDDD">'.&mt('Name').'</th>'.
+            '<th bgcolor="#DDDDDD">'.&mt('Title').'</th>'.
+	    '<th bgcolor="#DDDDDD">'.&mt('Status').'</th>'.
+            '<th bgcolor="#DDDDDD">'.&mt('Last Modified').
+	    '</th></tr>');
+
+  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('<html><head><title>LON-CAPA Construction Space</title></head>');
+  $r->print('</table></body></html>');
+  return OK;  
+}
+#
+#  Gets the effective URL of the request and returns it:
+#    $effn = getEffectiveUrl($r);
+#       $r  - The Apache Request object.
+sub getEffectiveUrl {
+    my $r = shift;
+    my $fn;
+    
+    if ($ENV{'form.filename'}) {	# If a form filename is defined.
+	$fn=$ENV{'form.filename'};
+	#
+	#   Replace the ~username of the URL with /home/username/public_html
+	#   so that we don't have to worry about ~ expansion internally.
+	#
+	$fn=~s/^http\:\/\/[^\/]+\///;
+        $fn=~s/^\///;
+        $fn=~s/\~(\w+)/\/home\/$1\/public_html/;
+	
+	#  Remove trailing / strings (?) 
+	
+	$fn=~s/\/[^\/]+$//;
+    } else {
+	#   If no form is defined, use request filename.
+	$fn = $r->filename();
+	my $lonDocRoot=$r->dir_config('lonDocRoot');
+	if ( $fn =~ /$lonDocRoot/ ) {
+	    #internal authentication, needs fixup.
+	    $fn = $r->uri(); # non users do not get the full path request
+                             # through SCRIPT_FILENAME
+	    $fn=~s|^/~(\w+)|/home/$1/public_html|;
+	}
+    }
+    $fn=~s/\/+/\//g;
+    return $fn;
+}
+#
+#   Output the header of the page.  This includes:
+#   - The HTML header 
+#   - The H1/H3  stuff which includes the directory.
+#
+#     startpage($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) = @_;
+    my $currdir = '/priv/'.$uname.$thisdisfn;
+    &Apache::loncommon::content_type($r,'text/html');
+    $r->send_http_header;
+
+    $r->print('<html><head><title>LON-CAPA Construction Space</title></head>');
+
+    my $pagetitle;
+    my $formaction='/priv/'.$uname.$thisdisfn.'/';
+    $formaction=~s/\/+/\//g;
+    $pagetitle .= &Apache::loncommon::help_open_menu('','','','',3,'Authoring').
+        '<font face="Arial, Helvetica, sans-serif" size="+1"><b>Construction Space</b>:</font>&nbsp;'.
+        '<form name="dirs" method="post" action="'.$formaction.
+        '" target="_parent"><tt><b>'.
+        &Apache::lonhtmlcommon::crumbs($uname.$thisdisfn.'/','_top','/priv','','+1',1)."</b></tt><br />".
+        &Apache::lonhtmlcommon::select_recent('construct','recent',
+                 'this.form.action=this.form.recent.value;this.form.submit()').
+              '</form>';
+    &Apache::lonhtmlcommon::store_recent('construct',$formaction,$formaction);
+    if ($ENV{'environment.remote'} eq 'off') {
+	$ENV{'request.noversionuri'}=$currdir.'/';
+	$r->print(&Apache::loncommon::bodytag('Construction Space',undef,undef,undef,undef,undef,$pagetitle));
+    } else {
+	$r->print($pagetitle);
+    }
+    my $pubdirscript=(<<ENDPUBDIRSCRIPT);
+<script>
+// Store directory location for menu bar to find
+
+parent.lastknownpriv='/~$uname$thisdisfn/';
+
+// Confirmation dialogues
+
+    function currdiract(theform) {
+        if (theform.dirtask.options[theform.dirtask.selectedIndex].value == 'publish') {
+            document.publishdir.filename.value = theform.filename.value
+            pubdir(document.publishdir)
+        }
+        if (theform.dirtask.options[theform.dirtask.selectedIndex].value == 'publishsub') {
+            document.publishdir.filename.value = theform.filename.value
+            pubrecdir(document.publishdir)
+        }
+        if (theform.dirtask.options[theform.dirtask.selectedIndex].value == 'editcat') {
+            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();
+        }
+    }
+  
+    function pubdir(theform) {
+	if (confirm('Publish complete directory?')) {
+            forcepub(theform)
+	    theform.submit();
+        }
+    }
+    function pubrecdir(theform) {
+	if (confirm('Publish directory and all subdirectories?')) {
+            forcepub(theform);
+            theform.pubrec.value='1';
+	    theform.submit();
+        }
+    }
+
+    function forcepub(theform) {
+        if (confirm('Force publication of unmodified files? - OK=yes; Cancel=No.')) {
+            theform.forcerepub.value="ON";
+        } 
+    }
+
+    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.filename.value
+            return
+        }
+        if (theform.diraction.options[theform.diraction.selectedIndex].value == "publish") {
+            pubdir(theform)
+        }
+        if (theform.diraction.options[theform.diraction.selectedIndex].value == "publishsub") {
+            pubrecdir(theform)
+        }
+        if (theform.diraction.options[theform.diraction.selectedIndex].value == "editcat") {
+            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()
+        }
+        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
+          if (confirm("Are you sure you want to delete "+theform.filename.value+"?")) {
+              delform.submit()
+          }
+      }
+      if (activity == 'obsolete') {
+          var pubform = document.pubresource
+          pubform.filename.value = theform.filename.value
+          alert("You will be taken to the publication page.\\nCheck the 'Obsolete' checkbox at the bottom of the page, and click 'Finalize Publication'.")
+          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()
+      }
+      return
+    }
+    function changename(theform,activity) {
+        var newname=prompt('New Name');
+        if (newname == "" || !newname)  {
+            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);
+
+    if (($uname ne $ENV{'user.name'}) || ($udom ne $ENV{'user.domain'})) {
+	$r->print('<h3>'.&mt('Co-Author').': '.$uname.' at '.$udom.
+		  '</h3>');
+    }
+}
 
-  $r->print(
-   '<body bgcolor="#FFFFFF"><img align=right src=/adm/lonIcons/lonlogos.gif>');
+sub dircontrols {
+    my ($r,$uname,$udom,$thisdisfn) = @_;
+    $r->print(<<END);
+        <table cellspacing="4" cellpadding="4" width="100%">
+         <tr>
+          <td bgcolor="#DDDDDD" align="middle"><font face="Arial, Helvetica, sans-serif" size="-1"><b>Actions for current directory</b></font></td>
+          <td bgcolor="#DDDDDD" align="middle"><font face="Arial, Helvetica, sans-serif" size="-1"><b>Upload a new document</b></font></td>
+          <td bgcolor="#DDDDDD" align="middle"><font face="Arial, Helvetica, sans-serif" size="-1"><b>Create a new directory or LON-CAPA document</b></font></td>
+        </tr>
+        <tr>
+         <td bgcolor="#ccddaa" valign="top" align="center">
+          <form name="curractions" method="post" action="">
+           <select name="dirtask" onChange="currdiract(this.form)">
+            <option>Select action</option>
+            <option value="publish">Publish directory</option>
+            <option value="publishsub">Publish with subdirectories</option>
+            <option value="editcat">Edit catalog information</option>
+            <option value="printdir">Print contents of directory</option>
+           </select>
+           <input type="hidden" name="filename" value="/~$uname$thisdisfn/" />
+          </form>
+          <form name="publishdir" method="post" action="/adm/publish" target="_parent">
+           <input type="hidden" name="pubrec" value="" />
+           <input type="hidden" name="filename" value="" />
+           <input type="hidden" name="forcerepub" value="NO" />
+          </form>
+          <form name="printdir" method="post" action="/adm/printout" target="_parent">
+           <input type="hidden" name="postdata" value="" />
+          </form>
+         </td>
+         <td bgcolor="#ccddaa" valign="top" align="center">
+	    <form name="upublisher" enctype="multipart/form-data" method="post" action="/adm/upload" target="_parent">
+	      <input type="hidden" name="filename" value="/~$uname$thisdisfn/" />
+	      <input type="file" name="upfile" size="20" />
+	      <input type="button" value="Upload file"  onclick="checkUpload(this.form)" />
+	    </form>
+	 </td>
+	 <td bgcolor="#ccddaa" align="center">
+	    <form name="fileaction" method="post" action="/adm/cfile" target="_parent">
+	      <nobr>
+		<input type="hidden" name="filename" value="/~$uname$thisdisfn/" />
+		  <select name="action">
+		    <option>Select action</option>
+		    <option value="newfile">New file:</option>
+		    <option value="newhtmlfile">New HTML file:</option>
+		    <option value="newproblemfile">New problem:</option>
+                    <option value="newpagefile">New assembled page:</option>
+                    <option value="newsequencefile">New assembled sequence:</option>
+                    <option value="newrightsfile">New custom rights file:</option>
+                    <option value="newstyfile">New style file:</option>
+		    <option value="newdir">New subdirectory:</option>
+		  </select>&nbsp;<input type="text" name="newfilename" value="Type Name Here" onfocus="if (this.value == 'Type Name Here') this.value=''" />&nbsp;<input type="button" value="Go" onclick="document.fileaction.submit()" />
+		 </nobr>
+		</form>
+	  </td>
+         </tr>
+        </table>
+END
+}
 
-  my $thisdisfn=$fn;
-  $thisdisfn=~s/^\/home\/$uname\/public_html//;
-  
-  $r->print('<h1>Construction Space Directory <tt>'.$thisdisfn.'</tt></h1>');
+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="pubrec" value="" />
+         <input type="hidden" name="filename" value="" />
+         <input type="hidden" name="forcerepub" value="NO" />
+       </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>
+END
+}
 
-  my $docroot=$r->dir_config('lonDocRoot');
+#
+#   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;
+}
 
-  my $resdir=$docroot.'/res/'.$udom.'/'.$uname.$thisdisfn;
-  my $linkdir='/~'.$uname.$thisdisfn;
+sub getCopyRightString {
+    my $fullname = shift;
+    return &Apache::lonnet::metadata($fullname, 'copyright');
+}
 
-    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);
+sub getSourceRightString {
+    my $fullname = shift;
+    return &Apache::lonnet::metadata($fullname, 'sourceavail');
+}
+#
+#  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, $resdir, $bombs, $numdir) = @_;
+    # construct the display filename: the directory name unless ..:
+    
+    my $disfilename = $dirname;
+    if ($dirname eq '..') {
+	$disfilename = '<i>'.&mt('Parent Directory').'</i>';
+    }
+    unless ( (($dirname eq '..') && ($reqfile eq '')) || ($dirname eq '.')) {
+	my $kaputt=0;
+	foreach (keys %{$bombs}) {
+	    if ($_=~m:^\Q$resdir\E/\Q$disfilename\E/:) { $kaputt=1; last; }
+	}
+	%Apache::lonpublisher::metadatafields=();
+	%Apache::lonpublisher::metadatakeys=();
+	my $construct=$here;
+	$construct=~s:^/priv/(\w+)$:/home/$1/public_html:;
+        my $dirpath = $here;
+        $dirpath=~s:^/priv/:/~:;
+	&Apache::lonpublisher::metaeval(&Apache::lonnet::getfile(
+       				 $construct.'/'.$dirname.'/default.meta'
+								 ));
+        my $actionitem = '';
+        if ($dirname eq '..') {
+            $actionitem = 'Go to ...';
+        } else {
+            $actionitem = 
+                    '<form name="dirselect_'.$$numdir.
+                    '" action="/adm/publish" target="_parent">'.
+                    '<select name="diraction" onChange="SetPubDir(this.form,document)">'.
+                      '<option selected="selected">'.&mt('Select action').'</option>'.
+                      '<option value="open">'.&mt('Open').'</option>'.
+                      '<option value="publish">'.&mt('Publish').'</option>'.
+                      '<option value="publishsub">'.&mt('Publish with subdirectories').'</option>'.
+                      '<option value="editcat">'.&mt('Edit catalog information').'</option>'.
+                      '<option value="printdir">'.&mt('Print directory').
+                    '</select>'.
+                     '<input type="hidden" name="filename" value="'.$dirpath.'/'.$dirname.'/" />'.
+                     '<input type="hidden" name="pubrec" value="" />'.
+                     '<input type="hidden" name="forcerepub" value="" />'.
+                     '<input type="hidden" name="postdata" value="" />'.
+                   '</form>';
+            $$numdir ++;
+        }
+	$r->print('<tr bgcolor="#CCCCFF">'.
+		  '<td><img src="'.
+		  $Apache::lonnet::perlvar{'lonIconsURL'}.'/folder_closed.gif" /></td>'.
+		  '<td>'.$actionitem.'</td>'.
+		  '<td><font face="arial"><a href="'.$here.'/'.$dirname.'/" target="_parent">'.
+		  $disfilename.'</a></font></td>'.
+		        '<td colspan="2">'.($kaputt?&Apache::lonhtmlcommon::authorbombs($resdir.'/'.$disfilename.'/'):'').$Apache::lonpublisher::metadatafields{'title'}.' <i>'.
+		  $Apache::lonpublisher::metadatafields{'subject'}.'</i> '.
+		  $Apache::lonpublisher::metadatafields{'keywords'}.'</td>'.
+		  '<td>'.&Apache::lonlocal::locallocaltime($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) = @_;
+    my $pubstatus = 'unpublished';
+    my $status=&mt('Unpublished');
+    my $bgcolor='#FFAA99';
+    my $title='&nbsp;';
+    my $publish_button=&mt('Publish');
+#    my $action_buttons=
+#        '<br /><a target="_parent" href="/adm/cfile?action=delete&filename=/~'.
+#	$uname.'/'.$thisdisfn.'/'.$filename.'">'.
+#	&mt('Delete').'</a>';
+    if (-e $resdir.'/'.$filename) {
+	my ($rdev,$rino,$rmode,$rnlink,
+	    $ruid,$rgid,$rrdev,$rsize,
+	    $ratime,$rmtime,$rctime,
+	    $rblksize,$rblocks)=stat($resdir.'/'.$filename);
+	$publish_button=&mt('Re-publish');
+	if ($rmtime>=$cmtime) {
+            $pubstatus = 'published';
+	    $status=&mt('Published').'<br />'.
+		&mt(&getCopyRightString($targetdir.'/'.$filename)).' '.
+		&mt(&getSourceRightString($targetdir.'/'.$filename));
+	    $bgcolor='#CCFF88';
+	    if (&Apache::lonnet::metadata($targetdir.'/'.$filename,'obsolete')) {
+                $pubstatus = 'obsolete';
+		$status=&mt('Obsolete');
+                $bgcolor='#AAAAAA';
+            }
+#	    } else {
+#		$action_buttons='';
+#	    }
+	    $title='<a href="/res/'.$targetdir.'/'.$filename.
+		'.meta" target=cat>'.
+		&getTitleString($targetdir.'/'.$filename).'</a>';
+	} else {
+            $pubstatus = 'modified';
+	    $status=&mt('Modified').'<br />'.
+		&mt(&getCopyRightString($targetdir.'/'.$filename)).' '.
+		&mt(&getSourceRightString($targetdir.'/'.$filename));
+            $bgcolor='#FFFF77';
+#	    $action_buttons='';
+	    $title='<a href="/res/'.$targetdir.'/'.$filename.'.meta" target=cat>'.
+		&getTitleString($targetdir.'/'.$filename).'</a>';
+	    if (&Apache::loncommon::fileembstyle(($filename=~/\.(\w+)$/)) eq 'ssi') {
+		$status.='<br /><a href="/adm/diff?filename=/~'.$uname.
+		    $thisdisfn.'/'.$filename.
+		    '&versiontwo=priv" target=cat>'.&mt('Diffs').'</a>';
+	    }
+	}
+	$title.='<br /><a href="/~'.$uname.$thisdisfn.'/'.$filename.'.meta">'. 
+	    ($$bombs{$targetdir.'/'.$filename}?'<img src="/adm/lonMisc/bomb.gif" border="0" />':'Edit Metadata').'</a>';
+	$status.='<br><a href="/adm/retrieve?filename=/~'.$uname.
+	    $thisdisfn.'/'.$filename.'" 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=~/\.(problem|exam|quiz|assess|survey|form|library)$/) {
+	$editlink=' (<a href="'.$linkdir.'/'.$filename.'?forceedit=1" target="_parent">'.&mt('EditXML').'</a>)';
+	$editlink2=' <br />(<a href="'.$linkdir.'/'.$filename.'?forceColoredit=1" target="_parent">'.&mt('Edit').'</a>)';
+    }
+    if ($filename=~/\.(zip|tar|bz2|gz|tar.gz|tar.bz2|tgz)$/) {
+	$editlink=' (<a target="_parent" href="/adm/cfile?decompress=/~'.
+	      $uname.$thisdisfn.'/'.$filename.'">'.&mt('Decompress').'</a>)';
+    }
+    my $pub_select = '';
+    &create_pubselect($r,\$pub_select,$udom,$uname,$thisdisfn,$filename,$resdir,$pubstatus,$publish_button,$numres);
+    $r->print('<tr bgcolor="'.$bgcolor.'">'.
+	      '<td>'.($filename=~/[\#\~]$/?'&nbsp;':
+		      '<img src="'.&Apache::loncommon::icon($filename).'" /></td>').
+              '<td>'.$pub_select.'</td>'.
+	      '<td><font face="arial">'.
+	      '<a href="'.$linkdir.'/'.$filename.'" target="_parent">'.
+               $filename.'</a></font>'.$editlink2.$editlink.
+	      '</td>'.
+	      '<td>'.$title.'</td>'.
+	      '<td>'.$status.'</td>'.
+	      '<td>'.&Apache::lonlocal::locallocaltime($cmtime).'</td>'.
+	      "</tr>\n");
+    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 value="copy"/>'.&mt('Copy');
+    if ($pubstatus eq 'obsolete' || $pubstatus eq 'unpublished') {
+        $$pub_select .= 
+'<option value="rename"/>'.&mt('Rename').
+'<option value="move"/>'.&mt('Move').
+'<option value="delete"/>'.&mt('Delete');
+    } else {
+        $$pub_select .= '
+<option value="obsolete"/>'.&mt('Mark obsolete');
+    }
+# check for versions
+    my $versions = &check_for_versions($r,'/'.$filename,$udom,$uname);
+    if ($versions > 0) {
+        $$pub_select .='
+<option value="retrieve"/>'.&mt('Retrieve old version');
+    }
+    $$pub_select .= '
+<option value="publish"/>'.$publish_button.
+'<option value="print"/>'.&mt('Print').
+'</select>
+<input type="hidden" name="filename" value="/~'.
+ $uname.$thisdisfn.'/'.$filename.'"></form>';
+    $$numres ++;
+}
 
-  $r->print('</body></html>');
-  return OK;  
+sub check_for_versions {
+    my ($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;
+}
+
+#
+#   Categorize files in the directory.
+#   For each file in a list of files in a file directory, 
+#   the  file categorized as one of:
+#    - directory  
+#    - sequence
+#    - problem 
+#    - Other resource.
+#
+#   For each file the modification date is determined as well.
+#   Returned is a list of sublists:
+#    (directories, sequences, problems, other)
+#   each of the sublists contains entries of the following form (sorted by
+#   filename):
+#     (filename, typecode, lastmodtime)
+#
+#   $list = CategorizeFiles($location, $files)
+#       $location   - Directory in which the files live (relative to our
+#                     execution.
+#       $files      - list of files.
+#
+sub CategorizeFiles {
+    my $location = shift;
+    my $files    = shift;
 }
+
+1;
+__END__
+
+=head1 NAME
+
+Apache::lonpubdir - Construction space directory lister
+
+=head1 SYNOPSIS
+
+Invoked (for various locations) by /etc/httpd/conf/srm.conf:
+
+ <LocationMatch "^/\~.*/$">
+ 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