--- loncom/publisher/lonpublisher.pm	2000/11/29 19:52:34	1.3
+++ loncom/publisher/lonpublisher.pm	2007/01/26 22:16:33	1.218
@@ -1,151 +1,2135 @@
 # The LearningOnline Network with CAPA
 # Publication Handler
-# 
-# (TeX Content Handler
 #
-# 05/29/00,05/30,10/11 Gerd Kortemeyer)
+# $Id: lonpublisher.pm,v 1.218 2007/01/26 22:16:33 raeburn Exp $
 #
-# 11/28,11/29 Gerd Kortemeyer
+# 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/
+#
+###
+
+###############################################################################
+##                                                                           ##
+## ORGANIZATION OF THIS PERL MODULE                                          ##
+##                                                                           ##
+## 1. Modules used by this module                                            ##
+## 2. Various subroutines                                                    ##
+## 3. Publication Step One                                                   ##
+## 4. Phase Two                                                              ##
+## 5. Main Handler                                                           ##
+##                                                                           ##
+###############################################################################
+
+
+######################################################################
+######################################################################
+
+=pod 
+
+=head1 NAME
+
+lonpublisher - LON-CAPA publishing handler
+
+=head1 SYNOPSIS
+
+B<lonpublisher> is used by B<mod_perl> inside B<Apache>.  This is the
+invocation by F<loncapa_apache.conf>:
+
+  <Location /adm/publish>
+  PerlAccessHandler       Apache::lonacc
+  SetHandler perl-script
+  PerlHandler Apache::lonpublisher
+  ErrorDocument     403 /adm/login
+  ErrorDocument     404 /adm/notfound.html
+  ErrorDocument     406 /adm/unauthorized.html
+  ErrorDocument     500 /adm/errorhandler
+  </Location>
+
+=head1 OVERVIEW
+
+Authors can only write-access the C</~authorname/> space. They can
+copy resources into the resource area through the publication step,
+and move them back through a recover step. Authors do not have direct
+write-access to their resource space.
+
+During the publication step, several events will be
+triggered. Metadata is gathered, where a wizard manages default
+entries on a hierarchical per-directory base: The wizard imports the
+metadata (including access privileges and royalty information) from
+the most recent published resource in the current directory, and if
+that is not available, from the next directory above, etc. The Network
+keeps all previous versions of a resource and makes them available by
+an explicit version number, which is inserted between the file name
+and extension, for example C<foo.2.html>, while the most recent
+version does not carry a version number (C<foo.html>). Servers
+subscribing to a changed resource are notified that a new version is
+available.
+
+=head1 DESCRIPTION
+
+B<lonpublisher> takes the proper steps to add resources to the LON-CAPA
+digital library.  This includes updating the metadata table in the
+LON-CAPA database.
+
+B<lonpublisher> is many things to many people.  
+
+This module publishes a file.  This involves gathering metadata,
+versioning the file, copying file from construction space to
+publication space, and copying metadata from construction space
+to publication space.
+
+=head2 SUBROUTINES
+
+Many of the undocumented subroutines implement various magical
+parsing shortcuts.
+
+=over 4
+
+=cut
+
+######################################################################
+######################################################################
+
 
 package Apache::lonpublisher;
 
+# ------------------------------------------------- modules used by this module
 use strict;
 use Apache::File;
+use File::Copy;
 use Apache::Constants qw(:common :http :methods);
-use HTML::TokeParser;
+use HTML::LCParser;
+use Apache::lonxml;
+use Apache::loncacc;
+use DBI;
+use Apache::lonnet;
+use Apache::loncommon();
+use Apache::lonmysql;
+use Apache::lonlocal;
+use Apache::loncfile;
+use LONCAPA::lonmetadata;
+use Apache::lonmsg;
+use vars qw(%metadatafields %metadatakeys);
+use LONCAPA qw(:DEFAULT :match);
+ 
 
 my %addid;
+my %nokey;
+
+my $docroot;
+
+my $cuname;
+my $cudom;
+
+my $registered_cleanup;
+my $modified_urls;
+
+=pod
+
+=item B<metaeval>
+
+Evaluates a string that contains metadata.  This subroutine
+stores values inside I<%metadatafields> and I<%metadatakeys>.
+The hash key is a I<$unikey> corresponding to a unique id
+that is descriptive of the parser location inside the XML tree.
+
+Parameters:
+
+=over 4
+
+=item I<$metastring>
+
+A string that contains metadata.
+
+=back
+
+Returns:
+
+nothing
+
+=cut
+
+#########################################
+#########################################
+#
+# Modifies global %metadatafields %metadatakeys 
+#
+
+sub metaeval {
+    my ($metastring,$prefix)=@_;
+   
+    my $parser=HTML::LCParser->new(\$metastring);
+    my $token;
+    while ($token=$parser->get_token) {
+	if ($token->[0] eq 'S') {
+	    my $entry=$token->[1];
+	    my $unikey=$entry;
+	    if (defined($token->[2]->{'package'})) { 
+		$unikey.='_package_'.$token->[2]->{'package'};
+	    } 
+	    if (defined($token->[2]->{'part'})) { 
+		$unikey.='_'.$token->[2]->{'part'}; 
+	    }
+	    if (defined($token->[2]->{'id'})) { 
+		$unikey.='_'.$token->[2]->{'id'};
+	    } 
+	    if (defined($token->[2]->{'name'})) { 
+		$unikey.='_'.$token->[2]->{'name'}; 
+	    }
+	    foreach (@{$token->[3]}) {
+		$metadatafields{$unikey.'.'.$_}=$token->[2]->{$_};
+		if ($metadatakeys{$unikey}) {
+		    $metadatakeys{$unikey}.=','.$_;
+		} else {
+		    $metadatakeys{$unikey}=$_;
+		}
+	    }
+	    my $newentry=$parser->get_text('/'.$entry);
+	    if (($entry eq 'customdistributionfile') ||
+		($entry eq 'sourcerights')) {
+		$newentry=~s/^\s*//;
+		if ($newentry !~m|^/res|) { $newentry=$prefix.$newentry; }
+	    }
+# actually store
+	    if ( $entry eq 'rule' && exists($metadatafields{$unikey})) {
+		$metadatafields{$unikey}.=','.$newentry;
+	    } else {
+		$metadatafields{$unikey}=$newentry;
+	    }
+	}
+    }
+}
+
+#########################################
+#########################################
+
+=pod
+
+=item B<metaread>
+
+Read a metadata file
+
+Parameters:
+
+=over
+
+=item I<$logfile>
+
+File output stream to output errors and warnings to.
+
+=item I<$fn>
+
+File name (including path).
+
+=back
+
+Returns:
+
+=over 4
+
+=item Scalar string (if successful)
+
+XHTML text that indicates successful reading of the metadata.
+
+=back
+
+=cut
+
+#########################################
+#########################################
+sub metaread {
+    my ($logfile,$fn,$prefix)=@_;
+    unless (-e $fn) {
+	print($logfile 'No file '.$fn."\n");
+        return '<br /><b>'.&mt('No file').':</b> <tt>'.
+	    &Apache::loncfile::display($fn).'</tt>';
+    }
+    print($logfile 'Processing '.$fn."\n");
+    my $metastring;
+    {
+	my $metafh=Apache::File->new($fn);
+	$metastring=join('',<$metafh>);
+    }
+    &metaeval($metastring,$prefix);
+    return '<br /><b>'.&mt('Processed file').':</b> <tt>'.
+	&Apache::loncfile::display($fn).'</tt>';
+}
+
+#########################################
+#########################################
+
+sub coursedependencies {
+    my $url=&Apache::lonnet::declutter(shift);
+    $url=~s/\.meta$//;
+    my ($adomain,$aauthor)=($url=~ m{^($match_domain)/($match_username)/});
+    my $regexp=quotemeta($url);
+    $regexp='___'.$regexp.'___course';
+    my %evaldata=&Apache::lonnet::dump('nohist_resevaldata',$adomain,
+				       $aauthor,$regexp);
+    my %courses=();
+    foreach (keys %evaldata) {
+	if ($_=~/^([a-zA-Z0-9]+_[a-zA-Z0-9]+)___.+___course$/) {
+	    $courses{$1}=1;
+        }
+    }
+    return %courses;
+}
+#########################################
+#########################################
+
+
+=pod
+
+=item Form-field-generating subroutines.
+
+For input parameters, these subroutines take in values
+such as I<$name>, I<$value> and other form field metadata.
+The output (scalar string that is returned) is an XHTML
+string which presents the form field (foreseeably inside
+<form></form> tags).
+
+=over 4
+
+=item B<textfield>
+
+=item B<hiddenfield>
+
+=item B<selectbox>
+
+=back
+
+=cut
+
+#########################################
+#########################################
+sub textfield {
+    my ($title,$name,$value)=@_;
+    $value=~s/^\s+//gs;
+    $value=~s/\s+$//gs;
+    $value=~s/\s+/ /gs;
+    $title=&mt($title);
+    $env{'form.'.$name}=$value;
+    return "\n<p><font color=\"#800000\" face=\"helvetica\"><b>$title:".
+           "</b></font></p><br />".
+           '<input type="text" name="'.$name.'" size=80 value="'.$value.'" />';
+}
+
+sub text_with_browse_field {
+    my ($title,$name,$value,$restriction)=@_;
+    $value=~s/^\s+//gs;
+    $value=~s/\s+$//gs;
+    $value=~s/\s+/ /gs;
+    $title=&mt($title);
+    $env{'form.'.$name}=$value;
+    return "\n<p><font color=\"#800000\" face=\"helvetica\"><b>$title:".
+           "</b></font></p><br />".
+           '<input type="text" name="'.$name.'" size=80 value="'.$value.'" />'.
+	   '<a href="javascript:openbrowser(\'pubform\',\''.$name.'\',\''.$restriction.'\');">Select</a>&nbsp;'.
+	   '<a href="javascript:opensearcher(\'pubform\',\''.$name.'\');">Search</a>';
+	   
+}
+
+sub hiddenfield {
+    my ($name,$value)=@_;
+    $env{'form.'.$name}=$value;
+    return "\n".'<input type="hidden" name="'.$name.'" value="'.$value.'" />';
+}
+
+sub checkbox {
+    my ($name,$text)=@_;
+    return "\n<br /><label><input type='checkbox' name='$name' /> ".
+	&mt($text)."</label>";
+}
+
+sub selectbox {
+    my ($title,$name,$value,$functionref,@idlist)=@_;
+    $title=&mt($title);
+    $value=(split(/\s*,\s*/,$value))[-1];
+    if (defined($value)) {
+	$env{'form.'.$name}=$value;
+    } else {
+	$env{'form.'.$name}=$idlist[0];
+    }
+    my $selout="\n<p><font color=\"#800000\" face=\"helvetica\"><b>$title:".
+	'</b></font></p><br /><select name="'.$name.'">';
+    foreach (@idlist) {
+        $selout.='<option value=\''.$_.'\'';
+        if ($_ eq $value) {
+	    $selout.=' selected>'.&{$functionref}($_).'</option>';
+	}
+        else {$selout.='>'.&{$functionref}($_).'</option>';}
+    }
+    return $selout.'</select>';
+}
+
+sub select_level_form {
+    my ($value,$name)=@_;
+    $env{'form.'.$name}=$value;
+    if (!defined($value)) { $env{'form.'.$name}=0; }
+    return  &Apache::loncommon::select_level_form($value,$name);
+}
+#########################################
+#########################################
+
+=pod
+
+=item B<urlfixup>
+
+Fix up a url?  First step of publication
+
+=cut
+
+#########################################
+#########################################
+sub urlfixup {
+    my ($url,$target)=@_;
+    unless ($url) { return ''; }
+    #javascript code needs no fixing
+    if ($url =~ /^javascript:/i) { return $url; }
+    if ($url =~ /^mailto:/i) { return $url; }
+    #internal document links need no fixing
+    if ($url =~ /^\#/) { return $url; } 
+    my ($host)=($url=~/(?:http\:\/\/)*([^\/]+)/);
+    foreach (values %Apache::lonnet::hostname) {
+	if ($_ eq $host) {
+	    $url=~s/^http\:\/\///;
+            $url=~s/^$host//;
+        }
+    }
+    if ($url=~/^http\:\/\//) { return $url; }
+    $url=~s/\~$cuname/res\/$cudom\/$cuname/;
+    return $url;
+}
+
+#########################################
+#########################################
+
+=pod
+
+=item B<absoluteurl>
+
+Currently undocumented.
+
+=cut
+
+#########################################
+#########################################
+sub absoluteurl {
+    my ($url,$target)=@_;
+    unless ($url) { return ''; }
+    if ($target) {
+	$target=~s/\/[^\/]+$//;
+       $url=&Apache::lonnet::hreflocation($target,$url);
+    }
+    return $url;
+}
+
+#########################################
+#########################################
+
+=pod
+
+=item B<set_allow>
+
+Currently undocumented    
+
+=cut
+
+#########################################
+#########################################
+sub set_allow {
+    my ($allow,$logfile,$target,$tag,$oldurl)=@_;
+    my $newurl=&urlfixup($oldurl,$target);
+    my $return_url=$oldurl;
+    print $logfile 'GUYURL: '.$tag.':'.$oldurl.' - '.$newurl."\n";
+    if ($newurl ne $oldurl) {
+	$return_url=$newurl;
+	print $logfile 'URL: '.$tag.':'.$oldurl.' - '.$newurl."\n";
+    }
+    if (($newurl !~ /^javascript:/i) &&
+	($newurl !~ /^mailto:/i) &&
+	($newurl !~ /^http:/i) &&
+	($newurl !~ /^\#/)) {
+	$$allow{&absoluteurl($newurl,$target)}=1;
+    }
+    return $return_url;
+}
+
+#########################################
+#########################################
+
+=pod
+
+=item B<get_subscribed_hosts>
+
+Currently undocumented    
+
+=cut
+
+#########################################
+#########################################
+sub get_subscribed_hosts {
+    my ($target)=@_;
+    my @subscribed;
+    my $filename;
+    $target=~/(.*)\/([^\/]+)$/;
+    my $srcf=$2;
+    opendir(DIR,$1);
+    while ($filename=readdir(DIR)) {
+	if ($filename=~/\Q$srcf\E\.($match_lonid)$/) {
+	    my $subhost=$1;
+	    if (($subhost ne 'meta' && $subhost ne 'subscription' &&
+		 $subhost ne 'tmp') &&
+                ($subhost ne $Apache::lonnet::perlvar{'lonHostID'})) {
+		push(@subscribed,$subhost);
+	    }
+	}
+    }
+    closedir(DIR);
+    my $sh;
+    if ( $sh=Apache::File->new("$target.subscription") ) {
+	while (my $subline=<$sh>) {
+	    if ($subline =~ /^($match_lonid):/) { 
+                if ($1 ne $Apache::lonnet::perlvar{'lonHostID'}) { 
+                   push(@subscribed,$1);
+	        }
+	    }
+	}
+    }
+    return @subscribed;
+}
+
+
+#########################################
+#########################################
+
+=pod
+
+=item B<get_max_ids_indices>
+
+Currently undocumented    
+
+=cut
+
+#########################################
+#########################################
+sub get_max_ids_indices {
+    my ($content)=@_;
+    my $maxindex=10;
+    my $maxid=10;
+    my $needsfixup=0;
+    my $duplicateids=0;
+
+    my %allids;
+    my %duplicatedids;
+
+    my $parser=HTML::LCParser->new($content);
+    $parser->xml_mode(1);
+    my $token;
+    while ($token=$parser->get_token) {
+	if ($token->[0] eq 'S') {
+	    my $counter;
+	    if ($counter=$addid{$token->[1]}) {
+		if ($counter eq 'id') {
+		    if (defined($token->[2]->{'id'}) &&
+			$token->[2]->{'id'} !~ /^\s*$/) {
+			$maxid=($token->[2]->{'id'}>$maxid)?$token->[2]->{'id'}:$maxid;
+			if (exists($allids{$token->[2]->{'id'}})) {
+			    $duplicateids=1;
+			    $duplicatedids{$token->[2]->{'id'}}=1;
+			} else {
+			    $allids{$token->[2]->{'id'}}=1;
+			}
+		    } else {
+			$needsfixup=1;
+		    }
+		} else {
+		    if (defined($token->[2]->{'index'}) &&
+			$token->[2]->{'index'} !~ /^\s*$/) {
+			$maxindex=($token->[2]->{'index'}>$maxindex)?$token->[2]->{'index'}:$maxindex;
+		    } else {
+			$needsfixup=1;
+		    }
+		}
+	    }
+	}
+    }
+    return ($needsfixup,$maxid,$maxindex,$duplicateids,
+	    (keys(%duplicatedids)));
+}
+
+#########################################
+#########################################
+
+=pod
+
+=item B<get_all_text_unbalanced>
+
+Currently undocumented    
+
+=cut
+
+#########################################
+#########################################
+sub get_all_text_unbalanced {
+    #there is a copy of this in lonxml.pm
+    my($tag,$pars)= @_;
+    my $token;
+    my $result='';
+    $tag='<'.$tag.'>';
+    while ($token = $$pars[-1]->get_token) {
+	if (($token->[0] eq 'T')||($token->[0] eq 'C')||($token->[0] eq 'D')) {
+	    $result.=$token->[1];
+	} elsif ($token->[0] eq 'PI') {
+	    $result.=$token->[2];
+	} elsif ($token->[0] eq 'S') {
+	    $result.=$token->[4];
+	} elsif ($token->[0] eq 'E')  {
+	    $result.=$token->[2];
+	}
+	if ($result =~ /\Q$tag\E/s) {
+	    ($result,my $redo)=$result =~ /(.*)\Q$tag\E(.*)/is;
+	    #&Apache::lonnet::logthis('Got a winner with leftovers ::'.$2);
+	    #&Apache::lonnet::logthis('Result is :'.$1);
+	    $redo=$tag.$redo;
+	    push (@$pars,HTML::LCParser->new(\$redo));
+	    $$pars[-1]->xml_mode('1');
+	    last;
+	}
+    }
+    return $result
+}
+
+#########################################
+#########################################
+
+=pod
+
+=item B<fix_ids_and_indices>
+
+Currently undocumented    
+
+=cut
+
+#########################################
+#########################################
+#Arguably this should all be done as a lonnet::ssi instead
+sub fix_ids_and_indices {
+    my ($logfile,$source,$target)=@_;
+
+    my %allow;
+    my $content;
+    {
+	my $org=Apache::File->new($source);
+	$content=join('',<$org>);
+    }
+
+    my ($needsfixup,$maxid,$maxindex,$duplicateids,@duplicatedids)=
+	&get_max_ids_indices(\$content);
+
+    print $logfile ("Got $needsfixup,$maxid,$maxindex,$duplicateids--".
+			   join(', ',@duplicatedids));
+    if ($duplicateids) {
+	print $logfile "Duplicate ID(s) exist, ".join(', ',@duplicatedids)."\n";
+	my $outstring='<font color="red">'.&mt('Unable to publish file, it contains duplicated ID(s), ID(s) need to be unique. The duplicated ID(s) are').': '.join(', ',@duplicatedids).'</font>';
+	return ($outstring,1);
+    }
+    if ($needsfixup) {
+	print $logfile "Needs ID and/or index fixup\n".
+	    "Max ID   : $maxid (min 10)\n".
+                "Max Index: $maxindex (min 10)\n";
+    }
+    my $outstring='';
+    my @parser;
+    $parser[0]=HTML::LCParser->new(\$content);
+    $parser[-1]->xml_mode(1);
+    my $token;
+    while (@parser) {
+	while ($token=$parser[-1]->get_token) {
+	    if ($token->[0] eq 'S') {
+		my $counter;
+		my $tag=$token->[1];
+		my $lctag=lc($tag);
+		if ($lctag eq 'allow') {
+		    $allow{$token->[2]->{'src'}}=1;
+		    next;
+		}
+		if ($lctag eq 'base') { next; }
+		my %parms=%{$token->[2]};
+		$counter=$addid{$tag};
+		if (!$counter) { $counter=$addid{$lctag}; }
+		if ($counter) {
+		    if ($counter eq 'id') {
+			unless (defined($parms{'id'}) &&
+				$parms{'id'}!~/^\s*$/) {
+			    $maxid++;
+			    $parms{'id'}=$maxid;
+			    print $logfile 'ID(new) : '.$tag.':'.$maxid."\n";
+			} else {
+			    print $logfile 'ID(kept): '.$tag.':'.$parms{'id'}."\n";
+			}
+		    } elsif ($counter eq 'index') {
+			unless (defined($parms{'index'}) &&
+				$parms{'index'}!~/^\s*$/) {
+			    $maxindex++;
+			    $parms{'index'}=$maxindex;
+			    print $logfile 'Index: '.$tag.':'.$maxindex."\n";
+			}
+		    }
+		}
+                unless ($parms{'type'} eq 'zombie') {
+		    foreach my $type ('src','href','background','bgimg') {
+			foreach my $key (keys(%parms)) {
+			    if ($key =~ /^$type$/i) {
+				$parms{$key}=&set_allow(\%allow,$logfile,
+							$target,$tag,
+							$parms{$key});
+			    }
+			}
+		    }
+		}
+		# probably a <randomlabel> image type <label>
+		# or a <image> tag inside <imageresponse>
+		if (($lctag eq 'label' && defined($parms{'description'}))
+		    ||
+		    ($lctag eq 'image')) {
+		    my $next_token=$parser[-1]->get_token();
+		    if ($next_token->[0] eq 'T') {
+                        $next_token->[1] =~ s/[\n\r\f]+//g;
+			$next_token->[1]=&set_allow(\%allow,$logfile,
+						    $target,$tag,
+						    $next_token->[1]);
+		    }
+		    $parser[-1]->unget_token($next_token);
+		}
+		if ($lctag eq 'applet') {
+		    my $codebase='';
+		    my $havecodebase=0;
+		    foreach my $key (keys(%parms)) {
+			if (lc($key) eq 'codebase') { 
+			    $codebase=$parms{$key};
+			    $havecodebase=1; 
+			}
+		    }
+		    if ($havecodebase) {
+			my $oldcodebase=$codebase;
+			unless ($oldcodebase=~/\/$/) {
+			    $oldcodebase.='/';
+			}
+			$codebase=&urlfixup($oldcodebase,$target);
+			$codebase=~s/\/$//;    
+			if ($codebase ne $oldcodebase) {
+			    $parms{'codebase'}=$codebase;
+			    print $logfile 'URL codebase: '.$tag.':'.
+				$oldcodebase.' - '.
+				    $codebase."\n";
+			}
+			$allow{&absoluteurl($codebase,$target).'/*'}=1;
+		    } else {
+			foreach my $key (keys(%parms)) {
+			    if ($key =~ /(archive|code|object)/i) {
+				my $oldurl=$parms{$key};
+				my $newurl=&urlfixup($oldurl,$target);
+				$newurl=~s/\/[^\/]+$/\/\*/;
+				print $logfile 'Allow: applet '.lc($key).':'.
+				    $oldurl.' allows '.$newurl."\n";
+				$allow{&absoluteurl($newurl,$target)}=1;
+			    }
+			}
+		    }
+		}
+		my $newparmstring='';
+		my $endtag='';
+		foreach (keys %parms) {
+		    if ($_ eq '/') {
+			$endtag=' /';
+		    } else { 
+			my $quote=($parms{$_}=~/\"/?"'":'"');
+			$newparmstring.=' '.$_.'='.$quote.$parms{$_}.$quote;
+		    }
+		}
+		if (!$endtag) { if ($token->[4]=~m:/>$:) { $endtag=' /'; }; }
+		$outstring.='<'.$tag.$newparmstring.$endtag.'>';
+		if ($lctag eq 'm' || $lctag eq 'script' 
+                    || $lctag eq 'display' || $lctag eq 'tex') {
+		    $outstring.=&get_all_text_unbalanced('/'.$lctag,\@parser);
+		}
+	    } elsif ($token->[0] eq 'E') {
+		if ($token->[2]) {
+		    unless ($token->[1] eq 'allow') {
+			$outstring.='</'.$token->[1].'>';
+		    }
+		}
+	    } else {
+		$outstring.=$token->[1];
+	    }
+	}
+	pop(@parser);
+    }
+
+    if ($needsfixup) {
+	print $logfile "End of ID and/or index fixup\n".
+	    "Max ID   : $maxid (min 10)\n".
+		"Max Index: $maxindex (min 10)\n";
+    } else {
+	print $logfile "Does not need ID and/or index fixup\n";
+    }
+
+    return ($outstring,0,%allow);
+}
+
+#########################################
+#########################################
+
+=pod
+
+=item B<store_metadata>
+
+Store the metadata in the metadata table in the loncapa database.
+Uses lonmysql to access the database.
+
+Inputs: \%metadata
+
+Returns: (error,status).  error is undef on success, status is undef on error.
+
+=cut
+
+#########################################
+#########################################
+sub store_metadata {
+    my %metadata = @_;
+    my $error;
+    # Determine if the table exists
+    my $status = &Apache::lonmysql::check_table('metadata');
+    if (! defined($status)) {
+        $error='<font color="red">WARNING: Cannot connect to '.
+            'database!</font>';
+        &Apache::lonnet::logthis($error);
+        return ($error,undef);
+    }
+    if ($status == 0) {
+        # It would be nice to actually create the table....
+        $error ='<font color="red">WARNING: The metadata table does not '.
+            'exist in the LON-CAPA database.</font>';
+        &Apache::lonnet::logthis($error);
+        return ($error,undef);
+    }
+    my $dbh = &Apache::lonmysql::get_dbh();
+    if (($metadata{'obsolete'}) || ($metadata{'copyright'} eq 'priv') ||
+	($metadata{'copyright'} eq 'custom')) {
+        # remove this entry
+	$status=&LONCAPA::lonmetadata::delete_metadata($dbh,undef,
+                                                       $metadata{'url'});
+    } else {
+        $status = &LONCAPA::lonmetadata::update_metadata($dbh,undef,undef,
+                                                         \%metadata);
+    }
+    if (defined($status) && $status ne '') {
+        $error='<font color="red">Error occured storing new values in '.
+            'metadata table in LON-CAPA database</font>';
+        &Apache::lonnet::logthis($error);
+        &Apache::lonnet::logthis($status);
+        return ($error,undef);
+    }
+    return (undef,'success');
+}
+
+
+# ========================================== Parse file for errors and warnings
+
+sub checkonthis {
+    my ($r,$source)=@_;
+    my $uri=&Apache::lonnet::hreflocation($source);
+    $uri=~s/\/$//;
+    my $result=&Apache::lonnet::ssi_body($uri,
+					 ('grade_target'=>'web',
+					  'return_only_error_and_warning_counts' => 1));
+    my ($errorcount,$warningcount)=split(':',$result);
+    if (($errorcount) || ($warningcount)) {
+        $r->print('<br /><tt>'.$uri.'</tt>: ');
+	if ($errorcount) {
+	    $r->print('<img src="/adm/lonMisc/bomb.gif" /><font color="red"><b>'.
+		      $errorcount.' '.
+		      &mt('error(s)').'</b></font> ');
+	}
+	if ($warningcount) {
+	    $r->print('<font color="blue">'.
+		      $warningcount.' '.
+		      &mt('warning(s)').'</font>');
+	}
+    } else {
+	#$r->print('<font color="green">'.&mt('ok').'</font>');
+    }
+    $r->rflush();
+    return ($warningcount,$errorcount);
+}
+
+# ============================================== Parse file itself for metadata
+#
+# parses a file with target meta, sets global %metadatafields %metadatakeys 
+
+sub parseformeta {
+    my ($source,$style)=@_;
+    my $allmeta='';
+    if (($style eq 'ssi') || ($style eq 'prv')) {
+	my $dir=$source;
+	$dir=~s-/[^/]*$--;
+	my $file=$source;
+	$file=(split('/',$file))[-1];
+        $source=&Apache::lonnet::hreflocation($dir,$file);
+	$allmeta=&Apache::lonnet::ssi_body($source,('grade_target' => 'meta'));
+        &metaeval($allmeta);
+    }
+    return $allmeta;
+}
+
+#########################################
+#########################################
+
+=pod
+
+=item B<publish>
 
+This is the workhorse function of this module.  This subroutine generates
+backup copies, performs any automatic processing (prior to publication,
+especially for rat and ssi files),
+
+Returns a 2 element array, the first is the string to be shown to the
+user, the second is an error code, either 1 (an error occured) or 0
+(no error occurred)
+
+I<Additional documentation needed.>
+
+=cut
+
+#########################################
+#########################################
 sub publish {
-    my ($source,$target,$style)=@_;
+
+    my ($source,$target,$style,$batch)=@_;
     my $logfile;
+    my $scrout='';
+    my $allmeta='';
+    my $content='';
+    my %allow=();
+
     unless ($logfile=Apache::File->new('>>'.$source.'.log')) {
-	return 'No write permission to user directory, FAIL';
+	return ('<font color="red">'.&mt('No write permission to user directory, FAIL').'</font>',1);
     }
     print $logfile 
-"\n\n================== Publish ".localtime()." =================\n";
+"\n\n================= Publish ".localtime()." Phase One  ================\n".$env{'user.name'}.':'.$env{'user.domain'}."\n";
 
-    if (($style eq 'ssi') || ($style eq 'rat')) {
+    if (($style eq 'ssi') || ($style eq 'rat') || ($style eq 'prv')) {
 # ------------------------------------------------------- This needs processing
+
+# ----------------------------------------------------------------- Backup Copy
 	my $copyfile=$source.'.save';
+        if (copy($source,$copyfile)) {
+	    print $logfile "Copied original file to ".$copyfile."\n";
+        } else {
+	    print $logfile "Unable to write backup ".$copyfile.':'.$!."\n";
+	    return ("<font color=\"red\">Failed to write backup copy, $!,FAIL</font>",1);
+        }
+# ------------------------------------------------------------- IDs and indices
+	
+	my ($outstring,$error);
+	($outstring,$error,%allow)=&fix_ids_and_indices($logfile,$source,
+							$target);
+	if ($error) { return ($outstring,$error); }
+# ------------------------------------------------------------ Construct Allows
+    
+	$scrout.='<h3>'.&mt('Dependencies').'</h3>';
+        my $allowstr='';
+        foreach (sort(keys(%allow))) {
+	   my $thisdep=$_;
+	   if ($thisdep !~ /[^\s]/) { next; }
+           unless ($style eq 'rat') { 
+              $allowstr.="\n".'<allow src="'.$thisdep.'" />';
+	   }
+           $scrout.='<br />';
+           if ($thisdep!~/\*/ && $thisdep!~m|^/adm/|) {
+	       $scrout.='<a href="'.$thisdep.'">';
+           }
+           $scrout.='<tt>'.$thisdep.'</tt>';
+           if ($thisdep!~/\*/ && $thisdep!~m|^/adm/|) {
+	       $scrout.='</a>';
+               if (
+       &Apache::lonnet::getfile($Apache::lonnet::perlvar{'lonDocRoot'}.'/'.
+                                            $thisdep.'.meta') eq '-1') {
+		   $scrout.= ' - <font color="red">'.&mt('Currently not available').
+		       '</font>';
+               } else {
+                   my %temphash=(&Apache::lonnet::declutter($target).'___'.
+                             &Apache::lonnet::declutter($thisdep).'___usage'
+                                 => time);
+                   $thisdep=~m{^/res/($match_domain)/($match_username)/};
+                   if ((defined($1)) && (defined($2))) {
+                      &Apache::lonnet::put('nohist_resevaldata',\%temphash,
+					   $1,$2);
+		   }
+	       }
+           }
+        }
+        $outstring=~s/\n*(\<\/[^\>]+\>[^<]*)$/$allowstr\n$1\n/s;
+
+# ------------------------------------------------------------- Write modified.
+
         {
-	    my $org=Apache::File->new($source);
-            my $cop=Apache::File->new('>'.$copyfile);
-            while (my $line=<$org>) { print $cop $line; }
+          my $org;
+          unless ($org=Apache::File->new('>'.$source)) {
+             print $logfile "No write permit to $source\n";
+             return ('<font color="red">'.&mt('No write permission to').
+		     ' '.$source.
+		     ', '.&mt('FAIL').'</font>',1);
+	  }
+          print($org $outstring);
         }
-        if (-e $copyfile) {
-	    print $logfile "Copied original file to ".$copyfile."\n";
+	  $content=$outstring;
+
+    }
+# -------------------------------------------- Initial step done, now metadata.
+
+# --------------------------------------- Storage for metadata keys and fields.
+# these are globals
+#
+     %metadatafields=();
+     %metadatakeys=();
+     
+     my %oldparmstores=();
+     
+    unless ($batch) {
+     $scrout.='<h3>'.&mt('Metadata Information').' ' .
+       Apache::loncommon::help_open_topic("Metadata_Description")
+       . '</h3>';
+    }
+
+# ------------------------------------------------ First, check out environment
+     if ((!(-e $source.'.meta')) || ($env{'form.forceoverride'})) {
+        $metadatafields{'author'}=$env{'environment.firstname'}.' '.
+	                          $env{'environment.middlename'}.' '.
+		                  $env{'environment.lastname'}.' '.
+		                  $env{'environment.generation'};
+        $metadatafields{'author'}=~s/\s+/ /g;
+        $metadatafields{'author'}=~s/\s+$//;
+        $metadatafields{'owner'}=$cuname.':'.$cudom;
+
+# ------------------------------------------------ Check out directory hierachy
+
+        my $thisdisfn=$source;
+        $thisdisfn=~s/^\/home\/\Q$cuname\E\///;
+
+        my @urlparts=split(/\//,$thisdisfn);
+        $#urlparts--;
+
+        my $currentpath='/home/'.$cuname.'/';
+
+	my $prefix='../'x($#urlparts);
+        foreach (@urlparts) {
+	    $currentpath.=$_.'/';
+            $scrout.=&metaread($logfile,$currentpath.'default.meta',$prefix);
+	    $prefix=~s|^\.\./||;
+        }
+
+# ----------------------------------------------------------- Parse file itself
+# read %metadatafields from file itself
+ 
+	$allmeta=&parseformeta($source,$style);
+
+# ------------------- Clear out parameters and stores (there should not be any)
+
+        foreach (keys %metadatafields) {
+	    if (($_=~/^parameter/) || ($_=~/^stores/)) {
+		delete $metadatafields{$_};
+            }
+        }
+
+    } else {
+# ---------------------- Read previous metafile, remember parameters and stores
+
+        $scrout.=&metaread($logfile,$source.'.meta');
+
+        foreach (keys %metadatafields) {
+	    if (($_=~/^parameter/) || ($_=~/^stores/)) {
+                $oldparmstores{$_}=1;
+		delete $metadatafields{$_};
+            }
+        }
+# ------------------------------------------------------------- Save some stuff
+        my %savemeta=();
+        foreach ('title') {
+            $savemeta{$_}=$metadatafields{$_};
+	}
+# ------------------------------------------ See if anything new in file itself
+ 
+	$allmeta=&parseformeta($source,$style);
+# ----------------------------------------------------------- Restore the stuff
+        foreach (keys %savemeta) {
+	    $metadatafields{$_}=$savemeta{$_};
+	}
+   }
+
+       
+# ---------------- Find and document discrepancies in the parameters and stores
+
+    my $chparms='';
+    foreach (sort keys %metadatafields) {
+	if (($_=~/^parameter/) || ($_=~/^stores/)) {
+	    unless ($_=~/\.\w+$/) { 
+		unless ($oldparmstores{$_}) {
+		    print $logfile 'New: '.$_."\n";
+		    $chparms.=$_.' ';
+		}
+	    }
+	}
+    }
+    if ($chparms) {
+	$scrout.='<p><b>'.&mt('New parameters or stored values').
+	    ':</b> '.$chparms.'</p>';
+    }
+
+    $chparms='';
+    foreach (sort keys %oldparmstores) {
+	if (($_=~/^parameter/) || ($_=~/^stores/)) {
+	    unless (($metadatafields{$_.'.name'}) ||
+		    ($metadatafields{$_.'.package'}) || ($_=~/\.\w+$/)) {
+		print $logfile 'Obsolete: '.$_."\n";
+		$chparms.=$_.' ';
+	    }
+	}
+    }
+    if ($chparms) {
+	$scrout.='<p><b>'.&mt('Obsolete parameters or stored values').':</b> '.
+	    $chparms.'</p><h1><font color="red">'.&mt('Warning!').
+	    '</font></h1><p><font color="red" size="+1">'.
+	    &mt('If this resource is in active use, student performance data from the previous version may become inaccessible.').'</font></p><hr />';
+    }
+
+# ------------------------------------------------------- Now have all metadata
+
+    my %keywords=();
+        
+    if (length($content)<500000) {
+	my $textonly=$content;
+	$textonly=~s/\<script[^\<]+\<\/script\>//g;
+	$textonly=~s/\<m\>[^\<]+\<\/m\>//g;
+	$textonly=~s/\<[^\>]*\>//g;
+	$textonly=~tr/A-Z/a-z/;
+	$textonly=~s/[\$\&][a-z]\w*//g;
+	$textonly=~s/[^a-z\s]//g;
+	
+	foreach ($textonly=~m/(\w+)/g) {
+	    unless ($nokey{$_}) {
+		$keywords{$_}=1;
+	    } 
+	}
+    }
+
+            
+    foreach my $addkey (split(/[\"\'\,\;]/,$metadatafields{'keywords'})) {
+	$addkey=~s/\s+/ /g;
+	$addkey=~s/^\s//;
+	$addkey=~s/\s$//;
+	if ($addkey=~/\w/) {
+	    $keywords{$addkey}=1;
+	}
+    }
+# --------------------------------------------------- Now we also have keywords
+# =============================================================================
+# interactive mode html goes into $intr_scrout
+# batch mode throws away this HTML
+# additionally all of the field functions have a by product of setting
+#   $env{'from.'..} so that it can be used by the phase two handler in
+#    batch mode
+
+    my $intr_scrout.=
+	'<form name="pubform" action="/adm/publish" method="post">'.
+	'<p>'.($env{'form.makeobsolete'}?'':'<input type="submit" value="'.&mt('Finalize Publication').'" />').'</p>'.
+	&hiddenfield('phase','two').
+	&hiddenfield('filename',$env{'form.filename'}).
+	&hiddenfield('allmeta',&escape($allmeta)).
+	&hiddenfield('dependencies',join(',',keys %allow));
+    unless ($env{'form.makeobsolete'}) {
+       $intr_scrout.=
+	&textfield('Title','title',$metadatafields{'title'}).
+	&textfield('Author(s)','author',$metadatafields{'author'}).
+	&textfield('Subject','subject',$metadatafields{'subject'});
+ # --------------------------------------------------- Scan content for keywords
+
+    my $keywords_help = Apache::loncommon::help_open_topic("Publishing_Keywords");
+    my $KEYWORDS=&mt('Keywords');
+    my $CheckAll=&mt('check all');
+    my $UncheckAll=&mt('uncheck all');
+    my $keywordout=<<"END";
+<script>
+function checkAll(field) {
+    for (i = 0; i < field.length; i++)
+        field[i].checked = true ;
+}
+
+function uncheckAll(field) {
+    for (i = 0; i < field.length; i++)
+        field[i].checked = false ;
+}
+</script>
+<p><font color="#800000" face="helvetica"><b>$KEYWORDS:</b></font>
+ $keywords_help</b>
+<input type="button" value="$CheckAll" onclick="javascript:checkAll(document.pubform.keywords)" /> 
+<input type="button" value="$UncheckAll" onclick="javascript:uncheckAll(document.pubform.keywords)" /> 
+</p>
+<br />
+END
+    $keywordout.='<table border="2"><tr>';
+    my $colcount=0;
+
+    foreach (sort keys %keywords) {
+	$keywordout.='<td><label><input type="checkbox" name="keywords" value="'.$_.'"';
+	if ($metadatafields{'keywords'}) {
+	    if ($metadatafields{'keywords'}=~/\Q$_\E/) {
+		$keywordout.=' checked="on"';
+		$env{'form.keywords'}.=$_.',';
+	    }
+	} elsif (&Apache::loncommon::keyword($_)) {
+	    $keywordout.=' checked="on"';
+	    $env{'form.keywords'}.=$_.',';
+	}
+	$keywordout.=' />'.$_.'</label></td>';
+	if ($colcount>10) {
+	    $keywordout.="</tr><tr>\n";
+	    $colcount=0;
+	}
+	$colcount++;
+    }
+    $env{'form.keywords'}=~s/\,$//;
+
+    $keywordout.='</tr></table>';
+
+    $intr_scrout.=$keywordout;
+
+    $intr_scrout.=&textfield('Additional Keywords','addkey','');
+
+    $intr_scrout.=&textfield('Notes','notes',$metadatafields{'notes'});
+
+    $intr_scrout.=
+	"\n<p><font color=\"#800000\" face=\"helvetica\"><b>".&mt('Abstract').":".
+	"</b></font></p><br />".
+	'<textarea cols="80" rows="5" name="abstract">'.
+	$metadatafields{'abstract'}.'</textarea></p>';
+
+    $source=~/\.(\w+)$/;
+
+
+    $intr_scrout.=
+	"\n<p><font color=\"#800000\" face=\"helvetica\"><b>".
+	&mt('Lowest Grade Level').':'.
+	"</b></font></p><br />".
+	&select_level_form($metadatafields{'lowestgradelevel'},'lowestgradelevel').
+	"\n<p><font color=\"#800000\" face=\"helvetica\"><b>".
+	&mt('Highest Grade Level').':'.
+	"</b></font></p><br />".
+	&select_level_form($metadatafields{'highestgradelevel'},'highestgradelevel').
+	&textfield('Standards','standards',$metadatafields{'standards'});
+
+
+
+
+    $intr_scrout.=&hiddenfield('mime',$1);
+
+    my $defaultlanguage=$metadatafields{'language'};
+    $defaultlanguage =~ s/\s*notset\s*//g;
+    $defaultlanguage =~ s/^,\s*//g;
+    $defaultlanguage =~ s/,\s*$//g;
+
+    $intr_scrout.=&selectbox('Language','language',
+			     $defaultlanguage,
+			     \&Apache::loncommon::languagedescription,
+			     (&Apache::loncommon::languageids),
+			     );
+
+    unless ($metadatafields{'creationdate'}) {
+	$metadatafields{'creationdate'}=time;
+    }
+    $intr_scrout.=&hiddenfield('creationdate',
+			       &Apache::lonmysql::unsqltime($metadatafields{'creationdate'}));
+
+    $intr_scrout.=&hiddenfield('lastrevisiondate',time);
+
+
+    $intr_scrout.=&textfield('Publisher/Owner','owner',
+			     $metadatafields{'owner'});
+
+# ---------------------------------------------- Retrofix for unused copyright
+    if ($metadatafields{'copyright'} eq 'free') {
+	$metadatafields{'copyright'}='default';
+	$metadatafields{'sourceavail'}='open';
+    }
+# ------------------------------------------------ Dial in reasonable defaults
+    my $defaultoption=$metadatafields{'copyright'};
+    unless ($defaultoption) { $defaultoption='default'; }
+    my $defaultsourceoption=$metadatafields{'sourceavail'};
+    unless ($defaultsourceoption) { $defaultsourceoption='closed'; }
+    unless ($style eq 'prv') {
+# -------------------------------------------------- Correct copyright for rat.
+	if ($style eq 'rat') {
+# -------------------------------------- Retrofix for non-applicable copyright
+	    if ($metadatafields{'copyright'} eq 'public') { 
+		delete $metadatafields{'copyright'};
+		$defaultoption='default';
+	    }
+	    $intr_scrout.=&selectbox('Copyright/Distribution','copyright',
+				     $defaultoption,
+				     \&Apache::loncommon::copyrightdescription,
+				    (grep !/^public$/,(&Apache::loncommon::copyrightids)));
+	} else {
+	    $intr_scrout.=&selectbox('Copyright/Distribution','copyright',
+				     $defaultoption,
+				     \&Apache::loncommon::copyrightdescription,
+				     (&Apache::loncommon::copyrightids));
+	}
+	my $copyright_help =
+	    Apache::loncommon::help_open_topic('Publishing_Copyright');
+	$intr_scrout =~ s/Distribution:/'Distribution: ' . $copyright_help/ge;
+	$intr_scrout.=&text_with_browse_field('Custom Distribution File','customdistributionfile',$metadatafields{'customdistributionfile'},'rights').$copyright_help;
+	$intr_scrout.=&selectbox('Source Distribution','sourceavail',
+				 $defaultsourceoption,
+				 \&Apache::loncommon::source_copyrightdescription,
+				 (&Apache::loncommon::source_copyrightids));
+#	$intr_scrout.=&text_with_browse_field('Source Custom Distribution File','sourcerights',$metadatafields{'sourcerights'},'rights');
+	my $uctitle=&mt('Obsolete');
+	$intr_scrout.=
+	    "\n<p><label><font color=\"#800000\" face=\"helvetica\"><b>$uctitle:".
+	    '</b></font> <input type="checkbox" name="obsolete" ';
+	if ($metadatafields{'obsolete'}) {
+	    $intr_scrout.=' checked="1" ';
+	}
+	$intr_scrout.='/ ></label></p>'.
+	    &text_with_browse_field('Suggested Replacement for Obsolete File',
+				    'obsoletereplacement',
+				    $metadatafields{'obsoletereplacement'});
+    } else {
+	$intr_scrout.=&hiddenfield('copyright','private');
+    }
+   } else {
+       $intr_scrout.=
+	&hiddenfield('title',$metadatafields{'title'}).
+	&hiddenfield('author',$metadatafields{'author'}).
+	&hiddenfield('subject',$metadatafields{'subject'}).
+	&hiddenfield('keywords',$metadatafields{'keywords'}).
+	&hiddenfield('abstract',$metadatafields{'abstract'}).
+	&hiddenfield('notes',$metadatafields{'notes'}).
+	&hiddenfield('mime',$metadatafields{'mime'}).
+	&hiddenfield('creationdate',$metadatafields{'creationdate'}).
+	&hiddenfield('lastrevisiondate',time).
+	&hiddenfield('owner',$metadatafields{'owner'}).
+	&hiddenfield('lowestgradelevel',$metadatafields{'lowestgradelevel'}).
+	&hiddenfield('standards',$metadatafields{'standards'}).
+	&hiddenfield('highestgradelevel',$metadatafields{'highestgradelevel'}).
+	&hiddenfield('language',$metadatafields{'language'}).
+	&hiddenfield('copyright',$metadatafields{'copyright'}).
+	&hiddenfield('sourceavail',$metadatafields{'sourceavail'}).
+	&hiddenfield('customdistributionfile',$metadatafields{'customdistributionfile'}).
+	&hiddenfield('obsolete',1).
+	&text_with_browse_field('Suggested Replacement for Obsolete File',
+				    'obsoletereplacement',
+				    $metadatafields{'obsoletereplacement'});
+   }
+    if (!$batch) {
+	$scrout.=$intr_scrout.'<p><input type="submit" value="'.
+	    &mt($env{'form.makeobsolete'}?'Make Obsolete':'Finalize Publication').'" /></p></form>';
+    }
+    return($scrout,0);
+}
+
+#########################################
+#########################################
+
+=pod 
+
+=item B<phasetwo>
+
+Render second interface showing status of publication steps.
+This is publication step two.
+
+Parameters:
+
+=over 4
+
+=item I<$source>
+
+=item I<$target>
+
+=item I<$style>
+
+=item I<$distarget>
+
+=back
+
+Returns:
+
+=over 4
+
+=item integer
+
+0: fail
+1: success
+
+=cut
+
+#'stupid emacs
+#########################################
+#########################################
+sub phasetwo {
+
+    my ($r,$source,$target,$style,$distarget,$batch)=@_;
+    $source=~s/\/+/\//g;
+    $target=~s/\/+/\//g;
+#
+# Unless trying to get rid of something, check name validity
+#
+    unless ($env{'form.obsolete'}) {
+	if ($target=~/(\_\_\_|\&\&\&|\:\:\:)/) {
+	    $r->print(
+		      '<font color="red">'.&mt('Unsupported character combination').
+		      ' "<tt>'.$1.'</tt>" '.&mt('in filename, FAIL').'</font>');
+	    return 0;
+	}
+	unless ($target=~/\.(\w+)$/) {
+	    $r->print('<font color="red">'.&mt('No valid extension found in filename, FAIL').'</font>');
+	    return 0;
+	}
+	if ($target=~/\.(\d+)\.(\w+)$/) {
+	    $r->print('<font color="red">'.&mt('Cannot publish versioned resource, FAIL').'</font>');
+	    return 0;
+	}
+    }
+
+#
+# End name check
+#
+    $distarget=~s/\/+/\//g;
+    my $logfile;
+    unless ($logfile=Apache::File->new('>>'.$source.'.log')) {
+	$r->print(
+        '<font color="red">'.
+		&mt('No write permission to user directory, FAIL').'</font>');
+        return 0;
+    }
+    print $logfile 
+        "\n================= Publish ".localtime()." Phase Two  ================\n".$env{'user.name'}.':'.$env{'user.domain'}."\n";
+    
+    %metadatafields=();
+    %metadatakeys=();
+
+    &metaeval(&unescape($env{'form.allmeta'}));
+    
+    $metadatafields{'title'}=$env{'form.title'};
+    $metadatafields{'author'}=$env{'form.author'};
+    $metadatafields{'subject'}=$env{'form.subject'};
+    $metadatafields{'notes'}=$env{'form.notes'};
+    $metadatafields{'abstract'}=$env{'form.abstract'};
+    $metadatafields{'mime'}=$env{'form.mime'};
+    $metadatafields{'language'}=$env{'form.language'};
+    $metadatafields{'creationdate'}=$env{'form.creationdate'};
+    $metadatafields{'lastrevisiondate'}=$env{'form.lastrevisiondate'};
+    $metadatafields{'owner'}=$env{'form.owner'};
+    $metadatafields{'copyright'}=$env{'form.copyright'};
+    $metadatafields{'standards'}=$env{'form.standards'};
+    $metadatafields{'lowestgradelevel'}=$env{'form.lowestgradelevel'};
+    $metadatafields{'highestgradelevel'}=$env{'form.highestgradelevel'};
+    $metadatafields{'customdistributionfile'}=
+                                 $env{'form.customdistributionfile'};
+    $metadatafields{'sourceavail'}=$env{'form.sourceavail'};
+    $metadatafields{'obsolete'}=$env{'form.obsolete'};
+    $metadatafields{'obsoletereplacement'}=
+	                        $env{'form.obsoletereplacement'};
+    $metadatafields{'dependencies'}=$env{'form.dependencies'};
+    $metadatafields{'modifyinguser'}=$env{'user.name'}.':'.
+	                                 $env{'user.domain'};
+    $metadatafields{'authorspace'}=$cuname.':'.$cudom;
+    $metadatafields{'domain'}=$cudom;
+    
+    my $allkeywords=$env{'form.addkey'};
+    if (exists($env{'form.keywords'})) {
+        if (ref($env{'form.keywords'})) {
+            $allkeywords .= ','.join(',',@{$env{'form.keywords'}});
         } else {
-            return "Failed to write backup copy, FAIL";
+            $allkeywords .= ','.$env{'form.keywords'};
         }
+    }
+    $allkeywords=~s/[\"\']//g;
+    $allkeywords=~s/\s*[\;\,]\s*/\,/g;
+    $allkeywords=~s/\s+/ /g;
+    $allkeywords=~s/^[ \,]//;
+    $allkeywords=~s/[ \,]$//;
+    $metadatafields{'keywords'}=$allkeywords;
+    
+# check if custom distribution file is specified
+    if ($metadatafields{'copyright'} eq 'custom') {
+	my $file=$metadatafields{'customdistributionfile'};
+	unless ($file=~/\.rights$/) {
+            $r->print(
+                '<font color="red">'.&mt('No valid custom distribution rights file specified, FAIL').
+		'</font>');
+	    return 0;
+        }
+    }
+    {
+        print $logfile "\nWrite metadata file for ".$source;
+        my $mfh;
+        unless ($mfh=Apache::File->new('>'.$source.'.meta')) {
+            $r->print( 
+                '<font color="red">'.&mt('Could not write metadata, FAIL').
+		'</font>');
+	    return 0;
+        }
+        foreach (sort keys %metadatafields) {
+            unless ($_=~/\./) {
+                my $unikey=$_;
+                $unikey=~/^([A-Za-z]+)/;
+                my $tag=$1;
+                $tag=~tr/A-Z/a-z/;
+                print $mfh "\n\<$tag";
+                foreach (split(/\,/,$metadatakeys{$unikey})) {
+                    my $value=$metadatafields{$unikey.'.'.$_};
+                    $value=~s/\"/\'\'/g;
+                    print $mfh ' '.$_.'="'.$value.'"';
+                }
+                print $mfh '>'.
+                    &HTML::Entities::encode($metadatafields{$unikey},'<>&"')
+                        .'</'.$tag.'>';
+            }
+        }
+        $r->print('<p>'.&mt('Wrote Metadata').'</p>');
+        print $logfile "\nWrote metadata";
+    }
+    
+# -------------------------------- Synchronize entry with SQL metadata database
 
+    $metadatafields{'url'} = $distarget;
+    $metadatafields{'version'} = 'current';
+
+    my ($error,$success) = &store_metadata(%metadatafields);
+    if ($success) {
+	$r->print('<p>'.&mt('Synchronized SQL metadata database').'</p>');
+	print $logfile "\nSynchronized SQL metadata database";
+    } else {
+	$r->print($error);
+	print $logfile "\n".$error;
     }
-    my $version='';
+# --------------------------------------------- Delete author resource messages
+    my $delresult=&Apache::lonmsg::del_url_author_res_msg($target); 
+    $r->print('<p>'.&mt('Removing error messages:').' '.$delresult.'</p>');
+    print $logfile "\nRemoving error messages: $delresult";
+# ----------------------------------------------------------- Copy old versions
    
-    return 'Version '.$version.', SUCCESS';
+    if (-e $target) {
+        my $filename;
+        my $maxversion=0;
+        $target=~/(.*)\/([^\/]+)\.(\w+)$/;
+        my $srcf=$2;
+        my $srct=$3;
+        my $srcd=$1;
+        unless ($srcd=~/^\/home\/httpd\/html\/res/) {
+            print $logfile "\nPANIC: Target dir is ".$srcd;
+            $r->print(
+	 "<font color=\"red\">Invalid target directory, FAIL</font>");
+	    return 0;
+        }
+        opendir(DIR,$srcd);
+        while ($filename=readdir(DIR)) {
+            if (-l $srcd.'/'.$filename) {
+                unlink($srcd.'/'.$filename);
+                unlink($srcd.'/'.$filename.'.meta');
+            } else {
+                if ($filename=~/\Q$srcf\E\.(\d+)\.\Q$srct\E$/) {
+                    $maxversion=($1>$maxversion)?$1:$maxversion;
+                }
+            }
+        }
+        closedir(DIR);
+        $maxversion++;
+        $r->print('<p>Creating old version '.$maxversion.'</p>');
+        print $logfile "\nCreating old version ".$maxversion."\n";
+        
+        my $copyfile=$srcd.'/'.$srcf.'.'.$maxversion.'.'.$srct;
+        
+        if (copy($target,$copyfile)) {
+	    print $logfile "Copied old target to ".$copyfile."\n";
+            $r->print('<p>'.&mt('Copied old target file').'</p>');
+        } else {
+	    print $logfile "Unable to write ".$copyfile.':'.$!."\n";
+            $r->print("<font color=\"red\">".&mt('Failed to copy old target').
+		", $!, ".&mt('FAIL')."</font>");
+	    return 0;
+        }
+        
+# --------------------------------------------------------------- Copy Metadata
+
+	$copyfile=$copyfile.'.meta';
+        
+        if (copy($target.'.meta',$copyfile)) {
+	    print $logfile "Copied old target metadata to ".$copyfile."\n";
+            $r->print('<p>'.&mt('Copied old metadata').'</p>')
+        } else {
+	    print $logfile "Unable to write metadata ".$copyfile.':'.$!."\n";
+            if (-e $target.'.meta') {
+                $r->print( 
+                    "<font color=\"red\">".
+&mt('Failed to write old metadata copy').", $!, ".&mt('FAIL')."</font>");
+		return 0;
+	    }
+        }
+        
+        
+    } else {
+        $r->print('<p>'.&mt('Initial version').'</p>');
+        print $logfile "\nInitial version";
+    }
+
+# ---------------------------------------------------------------- Write Source
+    my $copyfile=$target;
+    
+    my @parts=split(/\//,$copyfile);
+    my $path="/$parts[1]/$parts[2]/$parts[3]/$parts[4]";
+    
+    my $count;
+    for ($count=5;$count<$#parts;$count++) {
+        $path.="/$parts[$count]";
+        if ((-e $path)!=1) {
+            print $logfile "\nCreating directory ".$path;
+            $r->print('<p>'.&mt('Created directory').' '.$parts[$count].'</p>');
+            mkdir($path,0777);
+        }
+    }
+    
+    if (copy($source,$copyfile)) {
+        print $logfile "\nCopied original source to ".$copyfile."\n";
+        $r->print('<p>'.&mt('Copied source file').'</p>');
+    } else {
+        print $logfile "\nUnable to write ".$copyfile.':'.$!."\n";
+        $r->print("<font color=\"red\">".
+	    &mt('Failed to copy source').", $!, ".&mt('FAIL')."</font>");
+	return 0;
+    }
+    
+# --------------------------------------------------------------- Copy Metadata
+
+    $copyfile=$copyfile.'.meta';
+    
+    if (copy($source.'.meta',$copyfile)) {
+        print $logfile "\nCopied original metadata to ".$copyfile."\n";
+        $r->print('<p>'.&mt('Copied metadata').'</p>');
+    } else {
+        print $logfile "\nUnable to write metadata ".$copyfile.':'.$!."\n";
+        $r->print(
+            "<font color=\"red\">".&mt('Failed to write metadata copy').", $!, ".&mt('FAIL')."</font>");
+	return 0;
+    }
+    $r->rflush;
+
+# ------------------------------------------------------------- Trigger updates
+    push(@{$modified_urls},[$target,$source]);
+    unless ($registered_cleanup) {
+	$r->register_cleanup(\&notify);
+	$registered_cleanup=1;
+    }
+
+# ---------------------------------------------------------- Clear local caches
+    my $thisdistarget=$target;
+    $thisdistarget=~s/^\Q$docroot\E//;
+    &Apache::lonnet::devalidate_cache_new('resversion',$target);
+    &Apache::lonnet::devalidate_cache_new('meta',
+			 &Apache::lonnet::declutter($thisdistarget));
+
+# ------------------------------------------------ Provide link to new resource
+    unless ($batch) {
+        
+        my $thissrc=$source;
+        $thissrc=~s{^/home/($match_username)/public_html}{/priv/$1};
+        
+        my $thissrcdir=$thissrc;
+        $thissrcdir=~s/\/[^\/]+$/\//;
+        
+        
+        $r->print(
+           '<hr /><a href="'.$thisdistarget.'"><font size="+2">'.
+           &mt('View Published Version').'</font></a>'.
+           '<p><a href="'.$thissrc.'"><font size=+2>'.
+		  &mt('Back to Source').'</font></a></p>'.
+           '<p><a href="'.$thissrcdir.
+                   '"><font size="+2">'.
+		  &mt('Back to Source Directory').'</font></a></p>');
+    }
+    $logfile->close();
+    $r->print('<p><font color="green">'.&mt('Done').'</font></p>');
+    return 1;
+}
+
+# =============================================================== Notifications
+sub notify {  
+# --------------------------------------------------- Send update notifications
+    foreach my $targetsource (@{$modified_urls}){
+	my ($target,$source)=@{$targetsource};
+	my $logfile=Apache::File->new('>>'.$source.'.log');
+	print $logfile "\nCleanup phase: Notifications\n";
+	my @subscribed=&get_subscribed_hosts($target);
+	foreach my $subhost (@subscribed) {
+	    print $logfile "\nNotifying host ".$subhost.':';
+	    my $reply=&Apache::lonnet::critical('update:'.$target,$subhost);
+	    print $logfile $reply;
+	}
+# ---------------------------------------- Send update notifications, meta only
+	my @subscribedmeta=&get_subscribed_hosts("$target.meta");
+	foreach my $subhost (@subscribedmeta) {
+	    print $logfile "\nNotifying host for metadata only ".$subhost.':';
+	    my $reply=&Apache::lonnet::critical('update:'.$target.'.meta',
+						$subhost);
+	    print $logfile $reply;
+	} 
+# --------------------------------------------------- Notify subscribed courses
+	my %courses=&coursedependencies($target);
+	my $now=time;
+	foreach (keys %courses) {
+	    print $logfile "\nNotifying course ".$_.':';
+	    my ($cdom,$cname)=split(/\_/,$_);
+	    my $reply=&Apache::lonnet::cput
+		('versionupdate',{$target => $now},$cdom,$cname);
+	    print $logfile $reply;
+	}
+	print $logfile "\n============ Done ============\n";
+	$logfile->close();
+    }
+    return OK;
+}
+
+#########################################
+
+sub batchpublish {
+    my ($r,$srcfile,$targetfile)=@_;
+    #publication pollutes %env with form.* values
+    my %oldenv=%env;
+    $srcfile=~s/\/+/\//g;
+    $targetfile=~s/\/+/\//g;
+    my $thisdisfn=$srcfile;
+    $thisdisfn=~s/\/home\/korte\/public_html\///;
+    $srcfile=~s/\/+/\//g;
+
+    my $docroot=$r->dir_config('lonDocRoot');
+    my $thisdistarget=$targetfile;
+    $thisdistarget=~s/^\Q$docroot\E//;
+
+
+    %metadatafields=();
+    %metadatakeys=();
+    $srcfile=~/\.(\w+)$/;
+    my $thistype=$1;
+
+
+    my $thisembstyle=&Apache::loncommon::fileembstyle($thistype);
+     
+    $r->print('<h2>'.&mt('Publishing').' <tt>'.$thisdisfn.'</tt></h2>');
+
+# phase one takes
+#  my ($source,$target,$style,$batch)=@_;
+    my ($outstring,$error)=&publish($srcfile,$targetfile,$thisembstyle,1);
+    $r->print('<p>'.$outstring.'</p>');
+# phase two takes
+# my ($source,$target,$style,$distarget,batch)=@_;
+# $env{'form.allmeta'},$env{'form.title'},$env{'form.author'},...
+    if (!$error) {
+	$r->print('<p>');
+	&phasetwo($r,$srcfile,$targetfile,$thisembstyle,$thisdistarget,1);
+	$r->print('</p>');
+    }
+    %env=%oldenv;
+    return '';
+}
+
+#########################################
+
+sub publishdirectory {
+    my ($r,$fn,$thisdisfn)=@_;
+    $fn=~s/\/+/\//g;
+    $thisdisfn=~s/\/+/\//g;
+    my $resdir=
+	$Apache::lonnet::perlvar{'lonDocRoot'}.'/res/'.$cudom.'/'.$cuname.'/'.
+	$thisdisfn;
+    $r->print('<h1>'.&mt('Directory').' <tt>'.$thisdisfn.'</tt></h1>'.
+	      &mt('Target').': <tt>'.$resdir.'</tt><br />');
+
+    my $dirptr=16384;		# Mask indicating a directory in stat.cmode.
+    unless ($env{'form.phase'} eq 'two') {
+# ask user what they want
+        $r->print('<form name="pubdirpref" method="post">'.
+		  &hiddenfield('phase','two').
+		  &hiddenfield('filename',$env{'form.filename'}).
+		  &checkbox('pubrec','include subdirectories').
+		  &checkbox('forcerepub','force republication of previously published files').
+                  &checkbox('obsolete','make file(s) obsolete').
+		  &checkbox('forceoverride','force directory level catalog information over existing').
+		  '<br /><input type="submit" value="'.&mt('Publish Directory').'" /></form>');
+    } else {
+# actually publish things
+	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&$dirptr) {
+		if (($filename!~/^\./) && ($env{'form.pubrec'})) {
+		    &publishdirectory($r,$fn.'/'.$filename,$thisdisfn.'/'.$filename);
+		}
+	    } elsif ((&Apache::loncommon::fileembstyle($extension) ne 'hdn') &&
+		     ($filename!~/^[\#\.]/) && ($filename!~/\~$/)) {
+# find out publication status and/or exiting metadata
+		my $publishthis=0;
+		if (-e $resdir.'/'.$filename) {
+		    my ($rdev,$rino,$rmode,$rnlink,
+			$ruid,$rgid,$rrdev,$rsize,
+			$ratime,$rmtime,$rctime,
+			$rblksize,$rblocks)=stat($resdir.'/'.$filename);
+		    if (($rmtime<$cmtime) || ($env{'form.forcerepub'})) {
+# previously published, modified now
+			$publishthis=1;
+		    }
+		    my $meta_cmtime = (stat($fn.'/'.$filename.'.meta'))[9];
+		    my $meta_rmtime = (stat($resdir.'/'.$filename.'.meta'))[9];
+		    if ( $meta_rmtime<$meta_cmtime ) {
+			$publishthis=1;
+		    }
+		} else {
+# never published
+		    $publishthis=1;
+		}
+		
+		if ($publishthis) {
+		    &batchpublish($r,$fn.'/'.$filename,$resdir.'/'.$filename);
+		} else {
+		    $r->print('<br />'.&mt('Skipping').' '.$filename.'<br />');
+		}
+		$r->rflush();
+	    }
+	}
+	closedir(DIR);
+    }
+}
+
+#########################################
+# publish a default.meta file
+
+sub defaultmetapublish {
+    my ($r,$fn,$cuname,$cudom)=@_;
+    $fn=~s/^\/\~$cuname\//\/home\/$cuname\/public_html\//;
+    unless (-e $fn) {
+       return HTTP_NOT_FOUND;
+    }
+    my $target=$fn;
+    $target=~s/^\/home\/$cuname\/public_html\//$Apache::lonnet::perlvar{'lonDocRoot'}\/res\/$cudom\/$cuname\//;
+
+
+    &Apache::loncommon::content_type($r,'text/html');
+    $r->send_http_header;
+
+    $r->print(&Apache::loncommon::start_page('Catalog Information Publication'));
+
+# ---------------------------------------------------------------- Write Source
+    my $copyfile=$target;
+    
+    my @parts=split(/\//,$copyfile);
+    my $path="/$parts[1]/$parts[2]/$parts[3]/$parts[4]";
+    
+    my $count;
+    for ($count=5;$count<$#parts;$count++) {
+        $path.="/$parts[$count]";
+        if ((-e $path)!=1) {
+            $r->print('<p>'.&mt('Created directory').' '.$parts[$count].'</p>');
+            mkdir($path,0777);
+        }
+    }
+    
+    if (copy($fn,$copyfile)) {
+        $r->print('<p>'.&mt('Copied source file').'</p>');
+    } else {
+        return "<font color=\"red\">".
+	    &mt('Failed to copy source').", $!, ".&mt('FAIL')."</font>";
+    }
+
+# --------------------------------------------------- Send update notifications
+
+    my @subscribed=&get_subscribed_hosts($target);
+    foreach my $subhost (@subscribed) {
+	$r->print('<p>'.&mt('Notifying host').' '.$subhost.':');$r->rflush;
+	my $reply=&Apache::lonnet::critical('update:'.$target,$subhost);
+	$r->print($reply.'</p><br />');$r->rflush;
+    }
+# ------------------------------------------------------------------- Link back
+    my $link=$fn;
+    $link=~s/^\/home\/$cuname\/public_html\//\/priv\/$cuname\//;
+    $r->print("<a href='$link'>".&mt('Back to Catalog Information').'</a>');
+    $r->print(&Apache::loncommon::end_page());
+    return OK;
 }
+#########################################
+
+=pod
+
+=item B<handler>
+
+A basic outline of the handler subroutine follows.
+
+=over 4
+
+=item *
+
+Get query string for limited number of parameters.
+
+=item *
+
+Check filename.
 
-# ================================================================ Main Handler
+=item *
 
+File is there and owned, init lookup tables.
+
+=item *
+
+Start page output.
+
+=item *
+
+Evaluate individual file, and then output information.
+
+=item *
+
+Publishing from $thisfn to $thistarget with $thisembstyle.
+
+=back
+
+=cut
+
+#########################################
+#########################################
 sub handler {
-  my $r=shift;
+    my $r=shift;
+
+    if ($r->header_only) {
+	&Apache::loncommon::content_type($r,'text/html');
+	$r->send_http_header;
+	return OK;
+    }
 
-  if ($r->header_only) {
-     $r->content_type('text/html');
-     $r->send_http_header;
-     return OK;
-  }
+# Get query string for limited number of parameters
 
+    &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},
+                                            ['filename']);
+
+# -------------------------------------- Flag and buffer for registered cleanup
+    $registered_cleanup=0;
+    @{$modified_urls}=();
 # -------------------------------------------------------------- Check filename
 
-  my $fn=$ENV{'form.filename'};
+    my $fn=&unescape($env{'form.filename'});
+
+    ($cuname,$cudom)=
+	&Apache::loncacc::constructaccess($fn,$r->dir_config('lonDefDomain'));
+
+# special publication: default.meta file
+    if ($fn=~/\/default.meta$/) {
+	return &defaultmetapublish($r,$fn,$cuname,$cudom); 
+    }
+    $fn=~s/\.meta$//;
+  
+    unless ($fn) { 
+	$r->log_reason($cuname.' at '.$cudom.
+		       ' trying to publish empty filename', $r->filename); 
+	return HTTP_NOT_FOUND;
+    } 
+
+    unless (($cuname) && ($cudom)) {
+	$r->log_reason($cuname.' at '.$cudom.
+		       ' trying to publish file '.$env{'form.filename'}.
+		       ' ('.$fn.') - not authorized', 
+		       $r->filename); 
+	return HTTP_NOT_ACCEPTABLE;
+    }
+
+    my $home=&Apache::lonnet::homeserver($cuname,$cudom);
+    my $allowed=0;
+    my @ids=&Apache::lonnet::current_machine_ids();
+    foreach my $id (@ids) { if ($id eq $home) { $allowed = 1; }  }
+    unless ($allowed) {
+	$r->log_reason($cuname.' at '.$cudom.
+		       ' trying to publish file '.$env{'form.filename'}.
+		       ' ('.$fn.') - not homeserver ('.$home.')', 
+		       $r->filename); 
+	return HTTP_NOT_ACCEPTABLE;
+    }
+
+    $fn=~s{^http://[^/]+}{};
+    $fn=~s{^/~($match_username)}{/home/$1/public_html};
 
-  unless ($fn) { 
-     $r->log_reason($ENV{'user.name'}.' at '.$ENV{'user.domain'}.
-         ' trying to publish empty filename', $r->filename); 
-     return HTTP_NOT_FOUND;
-  } 
-
-  $fn=~s/^http\:\/\/[^\/]+\/\~(\w+)/\/home\/$1\/public_html/;
-
-  my $targetdir='';
-  my $docroot=$r->dir_config('lonDocRoot'); 
-  if ($1 ne $ENV{'user.name'}) {
-     $r->log_reason($ENV{'user.name'}.' at '.$ENV{'user.domain'}.
-         ' trying to publish unowned file '.$ENV{'form.filename'}.
-         ' ('.$fn.')', 
-         $r->filename); 
-     return HTTP_NOT_ACCEPTABLE;
-  } else {
-      $targetdir=$docroot.'/res/'.$ENV{'user.domain'};
-  }
+    my $targetdir='';
+    $docroot=$r->dir_config('lonDocRoot'); 
+    if ($1 ne $cuname) {
+	$r->log_reason($cuname.' at '.$cudom.
+		       ' trying to publish unowned file '.
+		       $env{'form.filename'}.' ('.$fn.')', 
+		       $r->filename); 
+	return HTTP_NOT_ACCEPTABLE;
+    } else {
+	$targetdir=$docroot.'/res/'.$cudom;
+    }
                                  
   
-  unless (-e $fn) { 
-     $r->log_reason($ENV{'user.name'}.' at '.$ENV{'user.domain'}.
-         ' trying to publish non-existing file '.$ENV{'form.filename'}.
-         ' ('.$fn.')', 
-         $r->filename); 
-     return HTTP_NOT_FOUND;
-  } 
-
-# --------------------------------- File is there and owned, init lookup tables
-
-  %addid=();
-
-  {
-      my $fh=Apache::File->new($r->dir_config('lonTabDir').'/addid.tab');
-      while (<$fh>=~/(\w+)\s+(\w+)/) {
-          $addid{$1}=$2;
-      }
-  }
-# ----------------------------------------------------------- Start page output
-
-  $r->content_type('text/html');
-  $r->send_http_header;
-
-  $r->print('<html><head><title>LON-CAPA Publishing</title></head>');
-  $r->print('<body bgcolor="#FFFFFF">');
-  my $thisfn=$fn;
-   
-# ------------------------------------------------------------- Individual file
-  {
-      $thisfn=~/\.(\w+)$/;
-      my $thistype=$1;
-      my $thisembstyle=&Apache::lonnet::fileembstyle($thistype);
+    unless (-e $fn) { 
+	$r->log_reason($cuname.' at '.$cudom.
+		       ' trying to publish non-existing file '.
+		       $env{'form.filename'}.' ('.$fn.')', 
+		       $r->filename); 
+	return HTTP_NOT_FOUND;
+    } 
+
+# -------------------------------- File is there and owned, init lookup tables.
+
+    %addid=();
+    
+    {
+	my $fh=Apache::File->new($r->dir_config('lonTabDir').'/addid.tab');
+	while (<$fh>=~/(\w+)\s+(\w+)/) {
+	    $addid{$1}=$2;
+	}
+    }
 
-      my $thistarget=$thisfn;
-      
-      $thistarget=~s/^\/home/$targetdir/;
-      $thistarget=~s/\/public\_html//;
+    %nokey=();
+
+    {
+	my $fh=Apache::File->new($r->dir_config('lonIncludes').'/un_keyword.tab');
+	while (<$fh>) {
+	    my $word=$_;
+	    chomp($word);
+	    $nokey{$word}=1;
+	}
+    }
 
-      my $thisdistarget=$thistarget;
-      $thisdistarget=~s/^$docroot//;
+# ---------------------------------------------------------- Start page output.
 
-      my $thisdisfn=$thisfn;
-      $thisdisfn=~s/^\/home\/$ENV{'user.name'}\/public_html\///;
+    &Apache::loncommon::content_type($r,'text/html');
+    $r->send_http_header;
+    
+    my $js='<script type="text/javascript">'.
+	&Apache::loncommon::browser_and_searcher_javascript().
+	'</script>';
+    $r->print(&Apache::loncommon::start_page('Resource Publication',$js));
 
-      $r->print('<h2>Publishing '.
-        &Apache::lonnet::filedescription($thistype).' <tt>'.
-        $thisdisfn.'</tt></h2><b>Target:</b> <tt>'.$thisdistarget.'</tt><p>');
 
-# ------------ We are publishing from $thisfn to $thistarget with $thisembstyle
+    my $thisfn=$fn;
 
-      $r->print('<b>Result:</b> '.&publish($thisfn,$thistarget,$thisembstyle));
+    my $thistarget=$thisfn;
       
-  }  
+    $thistarget=~s/^\/home/$targetdir/;
+    $thistarget=~s/\/public\_html//;
 
-  $r->print('</body></html>');
+    my $thisdistarget=$thistarget;
+    $thisdistarget=~s/^\Q$docroot\E//;
 
-  return OK;
+    my $thisdisfn=$thisfn;
+    $thisdisfn=~s/^\/home\/\Q$cuname\E\/public_html\///;
+
+    if ($fn=~/\/$/) {
+# -------------------------------------------------------- This is a directory
+	&publishdirectory($r,$fn,$thisdisfn);
+	$r->print('<hr /><a href="/priv/'
+		  .$cuname.'/'.$thisdisfn
+		  .'">'.&mt('Return to Directory').'</a>');
+
+
+    } else {
+# ---------------------- Evaluate individual file, and then output information.
+	$thisfn=~/\.(\w+)$/;
+	my $thistype=$1;
+	my $thisembstyle=&Apache::loncommon::fileembstyle($thistype);
+        if ($thistype eq 'page') {  $thisembstyle = 'rat'; }
+	$r->print('<h2>'.&mt('Publishing').' '.
+		  &Apache::loncommon::filedescription($thistype).' <tt>');
+
+	$r->print(<<ENDCAPTION);
+<a href='javascript:void(window.open("/~$cuname/$thisdisfn","cat","height=300,width=500,scrollbars=1,resizable=1,menubar=0,location=1"))'>
+$thisdisfn</a>
+ENDCAPTION
+        $r->print('</tt></h2><b>'.&mt('Target').':</b> <tt>'.
+		  $thisdistarget.'</tt><br />');
+   
+	if (($cuname ne $env{'user.name'})||($cudom ne $env{'user.domain'})) {
+	    $r->print('<h3><font color="red">'.&mt('Co-Author').': '.
+		      $cuname.&mt(' at ').$cudom.'</font></h3>');
+	}
+
+	if (&Apache::loncommon::fileembstyle($thistype) eq 'ssi') {
+	    $r->print(<<ENDDIFF);
+<br />
+<a href='javascript:void(window.open("/adm/diff?filename=/~$cuname/$thisdisfn&versiontwo=priv","cat","height=300,width=500,scrollbars=1,resizable=1,menubar=0,location=1"))'>
+ENDDIFF
+            $r->print(&mt('Diffs with Current Version').'</a><br />');
+	}
+  
+# ------------------ Publishing from $thisfn to $thistarget with $thisembstyle.
+
+	unless ($env{'form.phase'} eq 'two') {
+# ---------------------------------------------------------- Parse for problems
+	    my ($warningcount,$errorcount);
+	    if ($thisembstyle eq 'ssi') {
+		($warningcount,$errorcount)=&checkonthis($r,$thisfn);
+	    }
+	    unless ($errorcount) {
+		my ($outstring,$error)=
+		    &publish($thisfn,$thistarget,$thisembstyle);
+		$r->print('<hr />'.$outstring);
+	    } else {
+		$r->print('<h3>'.
+			  &mt('The document contains errors and cannot be published.').
+			  '</h3>');
+	    }
+	} else {
+	    &phasetwo($r,$thisfn,$thistarget,$thisembstyle,$thisdistarget); 
+	    $r->print('<hr />');
+	}
+    }
+    $r->print(&Apache::loncommon::end_page());
+
+    return OK;
 }
 
 1;
 __END__
 
+=pod
 
+=back
 
+=back
 
-
-
+=cut