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Handles other MIME types than XML-like

# The LearningOnline Network with CAPA
# Publication Handler
# 
# (TeX Content Handler
#
# 05/29/00,05/30,10/11 Gerd Kortemeyer)
#
# 11/28,11/29,11/30,12/01,12/02,12/04,12/23 Gerd Kortemeyer
# 03/23 Guy Albertelli
# 03/24,03/29,04/03 Gerd Kortemeyer

package Apache::lonpublisher;

use strict;
use Apache::File;
use File::Copy;
use Apache::Constants qw(:common :http :methods);
use HTML::TokeParser;
use Apache::lonxml;
use Apache::lonhomework;

my %addid;
my %nokey;
my %language;
my %cprtag;

my %metadatafields;
my %metadatakeys;

my $docroot;

# ----------------------------------------------- Evaluate string with metadata

sub metaeval {
    my $metastring=shift;
   
        my $parser=HTML::TokeParser->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]->{'part'})) { 
                 $unikey.='_'.$token->[2]->{'part'}; 
	      }
              if (defined($token->[2]->{'name'})) { 
                 $unikey.='_'.$token->[2]->{'name'}; 
	      }
               map {
		  $metadatafields{$unikey.'.'.$_}=$token->[2]->{$_};
                  if ($metadatakeys{$unikey}) {
		      $metadatakeys{$unikey}.=','.$_;
                  } else {
                      $metadatakeys{$unikey}=$_;
                  }
              } @{$token->[3]};
              if ($metadatafields{$unikey}) {
		  my $newentry=$parser->get_text('/'.$entry);
                  unless ($metadatafields{$unikey}=~/$newentry/) {
                     $metadatafields{$unikey}.=', '.$newentry;
		  }
	      } else {
                 $metadatafields{$unikey}=$parser->get_text('/'.$entry);
              }
          }
       }
}

# -------------------------------------------------------- Read a metadata file

sub metaread {
    my ($logfile,$fn)=@_;
    unless (-e $fn) {
	print $logfile 'No file '.$fn."\n";
        return '<br><b>No file:</b> <tt>'.$fn.'</tt>';
    }
    print $logfile 'Processing '.$fn."\n";
    my $metastring;
    {
     my $metafh=Apache::File->new($fn);
     $metastring=join('',<$metafh>);
    }
    &metaeval($metastring);
    return '<br><b>Processed file:</b> <tt>'.$fn.'</tt>';
}

# --------------------------------------------------------- Various form fields

sub textfield {
    my ($title,$name,$value)=@_;
    return "\n<p><b>$title:</b><br>".
           '<input type=text name="'.$name.'" size=80 value="'.$value.'">';
}

sub hiddenfield {
    my ($name,$value)=@_;
    return "\n".'<input type=hidden name="'.$name.'" value="'.$value.'">';
}

sub selectbox {
    my ($title,$name,$value,%options)=@_;
    my $selout="\n<p><b>$title:</b><br>".'<select name="'.$name.'">';
    map {
        $selout.='<option value="'.$_.'"';
        if ($_ eq $value) { $selout.=' selected'; }
        $selout.='>'.$options{$_}.'</option>';
    } sort keys %options;
    return $selout.'</select>';
}

# -------------------------------------------------------- Publication Step One

sub publish {

    my ($source,$target,$style)=@_;
    my $logfile;
    my $scrout='';
    my $allmeta='';
    my $content='';

    unless ($logfile=Apache::File->new('>>'.$source.'.log')) {
	return 
         '<font color=red>No write permission to user directory, FAIL</font>';
    }
    print $logfile 
"\n\n================= Publish ".localtime()." Phase One  ================\n";

    if (($style eq 'ssi') || ($style eq 'rat')) {
# ------------------------------------------------------- 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>";
        }
# ------------------------------------------------------------- IDs and indices

        my $maxindex=10;
        my $maxid=10;

        my $needsfixup=0;

        {
          my $org=Apache::File->new($source);
          $content=join('',<$org>);
        }
        {
          my $parser=HTML::TokeParser->new(\$content);
          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'})) {
                             $maxid=
		       ($token->[2]->{'id'}>$maxid)?$token->[2]->{'id'}:$maxid;
			 } else {
                             $needsfixup=1;
                         }
                      } else {
 			  if (defined($token->[2]->{'index'})) {
                             $maxindex=
	   ($token->[2]->{'index'}>$maxindex)?$token->[2]->{'index'}:$maxindex;
			  } else {
                             $needsfixup=1;
			  }
		      }
		  }
              }
          }
      }
      if ($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=HTML::TokeParser->new(\$content);
          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'})) {
			      $outstring.=$token->[4];
			  } else {
                              $maxid++;
                              my $thisid=' id="'.$maxid.'"';
			      my $fixup=$token->[4];
                              $fixup=~s/(\<\w+)/$1$thisid/;
                              $outstring.=$fixup;
                              print $logfile 'ID: '.$fixup."\n";
                          }
                      } else {
 			  if (defined($token->[2]->{'index'})) {
			      $outstring.=$token->[4];
			  } else {
                              $maxindex++;
                              my $thisindex=' index="'.$maxindex.'"';
			      my $fixup=$token->[4];
                              $fixup=~s/(\<\w+)/$1$thisindex/;
                              $outstring.=$fixup;
                              print $logfile 'Index: '.$fixup."\n";
			  }
		      }
		  } else {
                      $outstring.=$token->[4];
                  }
              } elsif ($token->[0] eq 'E') {
                  $outstring.=$token->[2];
              } else {
                  $outstring.=$token->[1];
              }
          }
        {
          my $org;
          unless ($org=Apache::File->new('>'.$source)) {
             print $logfile "No write permit to $source\n";
             return 
              "<font color=red>No write permission to $source, FAIL</font>";
	  }
          print $org $outstring;
        }
	  $content=$outstring;
          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";
      }

# --------------------------------------------- Initial step done, now metadata

# ---------------------------------------- Storage for metadata keys and fields

     %metadatafields=();
     %metadatakeys=();
     
     my %oldparmstores=();

# ------------------------------------------------ First, check out environment
     unless (-e $source.'.meta') {
        $metadatafields{'author'}=$ENV{'environment.firstname'}.' '.
	                          $ENV{'environment.middlename'}.' '.
		                  $ENV{'environment.lastname'}.' '.
		                  $ENV{'environment.generation'};
        $metadatafields{'author'}=~s/\s+/ /g;
        $metadatafields{'author'}=~s/\s+$//;
        $metadatafields{'owner'}=$ENV{'user.name'}.'@'.$ENV{'user.domain'};

# ------------------------------------------------ Check out directory hierachy

        my $thisdisfn=$source;
        $thisdisfn=~s/^\/home\/$ENV{'user.name'}\///;

        my @urlparts=split(/\//,$thisdisfn);
        $#urlparts--;

        my $currentpath='/home/'.$ENV{'user.name'}.'/';

        map {
	    $currentpath.=$_.'/';
            $scrout.=&metaread($logfile,$currentpath.'default.meta');
        } @urlparts;

# ------------------- Clear out parameters and stores (there should not be any)

        map {
	    if (($_=~/^parameter/) || ($_=~/^stores/)) {
		delete $metadatafields{$_};
            }
        } keys %metadatafields;

    } else {
# ---------------------- Read previous metafile, remember parameters and stores

        $scrout.=&metaread($logfile,$source.'.meta');

        map {
	    if (($_=~/^parameter/) || ($_=~/^stores/)) {
                $oldparmstores{$_}=1;
		delete $metadatafields{$_};
            }
        } keys %metadatafields;
        
    }

# -------------------------------------------------- Parse content for metadata

        $allmeta=Apache::lonxml::xmlparse('meta',$content);
        &metaeval($allmeta);

# ---------------- Find and document discrepancies in the parameters and stores

        my $chparms='';
        map {
	    if (($_=~/^parameter/) || ($_=~/^stores/)) {
                unless ($_=~/\.\w+$/) { 
                   unless ($oldparmstores{$_}) {
		      print $logfile 'New: '.$_."\n";
                      $chparms.=$_.' ';
                   }
	        }
            }
        } sort keys %metadatafields;
        if ($chparms) {
	    $scrout.='<p><b>New parameters or stored values:</b> '.
                     $chparms;
        }

        my $chparms='';
        map {
	    if (($_=~/^parameter/) || ($_=~/^stores/)) {
                unless (($metadatafields{$_.'.name'}) || ($_=~/\.\w+$/)) {
		    print $logfile 'Obsolete: '.$_."\n";
                    $chparms.=$_.' ';
                }
            }
        } sort keys %oldparmstores;
        if ($chparms) {
	    $scrout.='<p><b>Obsolete parameters or stored values:</b> '.
                     $chparms;
        }
    }
# ------------------------------------------------------- Now have all metadata

        $scrout.=
     '<form action="/adm/publish" method="post">'.
          &hiddenfield('phase','two').
          &hiddenfield('filename',$ENV{'form.filename'}).
	  &hiddenfield('allmeta',&Apache::lonnet::escape($allmeta)).
          &textfield('Title','title',$metadatafields{'title'}).
          &textfield('Author(s)','author',$metadatafields{'author'}).
	  &textfield('Subject','subject',$metadatafields{'subject'});

# --------------------------------------------------- Scan content for keywords

	my $keywordout='<p><b>Keywords:</b><br><table border=2><tr>';
        my $colcount=0;
        
	{
	    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;

            my %keywords=();
            map {
		unless ($nokey{$_}) {
                   $keywords{$_}=1;
                } 
            } ($textonly=~m/(\w+)/g);

            map {
		$keywords{$_}=1;
            } split(/\W+/,$metadatafields{'keywords'});

            map {
                $keywordout.='<td><input type=checkbox name="key.'.$_.'"';
                if ($metadatafields{'keywords'}=~/$_/) { 
                   $keywordout.=' checked'; 
                }
                $keywordout.='>'.$_.'</td>';
                if ($colcount>10) {
		    $keywordout.="</tr><tr>\n";
                    $colcount=0;
                }
                $colcount++;
            } sort keys %keywords;
            $keywordout.='</tr></table>';

        }         
        
	$scrout.=$keywordout;

        $scrout.=&textfield('Additional Keywords','addkey','');

        $scrout.=&textfield('Notes','notes',$metadatafields{'notes'});

        $scrout.=
             '<p><b>Abstract:</b><br><textarea cols=80 rows=5 name=abstract>'.
              $metadatafields{'abstract'}.'</textarea>';

	$source=~/\.(\w+)$/;

	$scrout.=&hiddenfield('mime',$1);

        $scrout.=&selectbox('Language','language',
                            $metadatafields{'language'},%language);

        unless ($metadatafields{'creationdate'}) {
	    $metadatafields{'creationdate'}=time;
        }
        $scrout.=&hiddenfield('creationdate',$metadatafields{'creationdate'});

        $scrout.=&hiddenfield('lastrevisiondate',time);

			   
	$scrout.=&textfield('Publisher/Owner','owner',
                            $metadatafields{'owner'});

        $scrout.=&selectbox('Copyright/Distribution','copyright',
                            $metadatafields{'copyright'},%cprtag);

    return $scrout.
      '<p><input type="submit" value="Finalize Publication"></form>';
}

# -------------------------------------------------------- Publication Step Two

sub phasetwo {

    my ($source,$target,$style)=@_;
    my $logfile;
    my $scrout='';

    unless ($logfile=Apache::File->new('>>'.$source.'.log')) {
	return 
         '<font color=red>No write permission to user directory, FAIL</font>';
    }
    print $logfile 
"\n================= Publish ".localtime()." Phase Two  ================\n";

     %metadatafields=();
     %metadatakeys=();

     &metaeval(&Apache::lonnet::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'};

     my $allkeywords=$ENV{'form.addkey'};
     map {
         if ($_=~/^form\.key\.(\w+)/) {
	     $allkeywords.=','.$1;
         }
     } keys %ENV;
     $allkeywords=~s/\W+/\,/;
     $allkeywords=~s/^\,//;
     $metadatafields{'keywords'}=$allkeywords;
 
     {
       print $logfile "\nWrite metadata file for ".$source;
       my $mfh;
       unless ($mfh=Apache::File->new('>'.$source.'.meta')) {
	return 
         '<font color=red>Could not write metadata, FAIL</font>';
       }    
       map {
	 unless ($_=~/\./) {
           my $unikey=$_;
           $unikey=~/^([A-Za-z]+)/;
           my $tag=$1;
           $tag=~tr/A-Z/a-z/;
           print $mfh "\n\<$tag";
           map {
               my $value=$metadatafields{$unikey.'.'.$_};
               $value=~s/\"/\'\'/g;
               print $mfh ' '.$_.'="'.$value.'"';
           } split(/\,/,$metadatakeys{$unikey});
	   print $mfh '>'.$metadatafields{$unikey}.'</'.$tag.'>';
         }
       } sort keys %metadatafields;
       $scrout.='<p>Wrote Metadata';
       print $logfile "\nWrote metadata";
     }

# ----------------------------------------------------------- Copy old versions
   
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;
        return "<font color=red>Invalid target directory, FAIL</font>";
    }
    opendir(DIR,$srcd);
    while ($filename=readdir(DIR)) {
       if ($filename=~/$srcf\.(\d+)\.$srct$/) {
	   $maxversion=($1>$maxversion)?$1:$maxversion;
       }
    }
    closedir(DIR);
    $maxversion++;
    $scrout.='<p>Creating old version '.$maxversion;
    print $logfile "\nCreating old version ".$maxversion;

    my $copyfile=$srcd.'/'.$srcf.'.'.$maxversion.'.'.$srct;

        if (copy($target,$copyfile)) {
	    print $logfile "Copied old target to ".$copyfile."\n";
            $scrout.='<p>Copied old target file';
        } else {
	    print $logfile "Unable to write ".$copyfile.':'.$!."\n";
           return "<font color=red>Failed to copy old target, $!, FAIL</font>";
        }

# --------------------------------------------------------------- Copy Metadata

	$copyfile=$copyfile.'.meta';

        if (copy($target.'.meta',$copyfile)) {
	    print $logfile "Copied old target metadata to ".$copyfile."\n";
            $scrout.='<p>Copied old metadata';
        } else {
	    print $logfile "Unable to write metadata ".$copyfile.':'.$!."\n";
            if (-e $target.'.meta') {
               return 
       "<font color=red>Failed to write old metadata copy, $!, FAIL</font>";
	    }
        }


} else {
    $scrout.='<p>Initial version';
    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;
                   $scrout.='<p>Created directory '.$parts[$count];
		   mkdir($path,0777);
               }
           }

        if (copy($source,$copyfile)) {
	    print $logfile "Copied original source to ".$copyfile."\n";
            $scrout.='<p>Copied source file';
        } else {
	    print $logfile "Unable to write ".$copyfile.':'.$!."\n";
            return "<font color=red>Failed to copy source, $!, FAIL</font>";
        }

# --------------------------------------------------------------- Copy Metadata

        $copyfile=$copyfile.'.meta';

        if (copy($source.'.meta',$copyfile)) {
	    print $logfile "Copied original metadata to ".$copyfile."\n";
            $scrout.='<p>Copied metadata';
        } else {
	    print $logfile "Unable to write metadata ".$copyfile.':'.$!."\n";
            return 
          "<font color=red>Failed to write metadata copy, $!, FAIL</font>";
        }

# --------------------------------------------------- Send update notifications

{

    my $filename;
 
    $target=~/(.*)\/([^\/]+)$/;
    my $srcf=$2;
    opendir(DIR,$1);
    while ($filename=readdir(DIR)) {
       if ($filename=~/$srcf\.(\w+)$/) {
	   my $subhost=$1;
           if ($subhost ne 'meta') {
	       $scrout.='<p>Notifying host '.$subhost.':';
               print $logfile "\nNotifying host '.$subhost.':'";
               my $reply=&Apache::lonnet::critical('update:'.$target,$subhost);
               $scrout.=$reply;
               print $logfile $reply;              
           }
       }
    }
    closedir(DIR);

}

# ---------------------------------------- Send update notifications, meta only

{

    my $filename;
 
    $target=~/(.*)\/([^\/]+)$/;
    my $srcf=$2.'.meta';
    opendir(DIR,$1);
    while ($filename=readdir(DIR)) {
       if ($filename=~/$srcf\.(\w+)$/) {
	   my $subhost=$1;
           if ($subhost ne 'meta') {
	       $scrout.=
                '<p>Notifying host for metadata only '.$subhost.':';
               print $logfile 
                "\nNotifying host for metadata only '.$subhost.':'";
               my $reply=&Apache::lonnet::critical(
                                'update:'.$target.'.meta',$subhost);
               $scrout.=$reply;
               print $logfile $reply;              
           }
       }
    }
    closedir(DIR);

}

# ------------------------------------------------ Provide link to new resource

    my $thisdistarget=$target;
    $thisdistarget=~s/^$docroot//;

    my $thissrc=$source;
    $thissrc=~s/^\/home\/(\w+)\/public_html/\/priv\/$1/;

    my $thissrcdir=$thissrc;
    $thissrcdir=~s/\/[^\/]+$/\//;


    return $scrout.
      '<hr><a href="'.$thisdistarget.'"><font size=+2>View Target</font></a>'.
      '<p><a href="'.$thissrc.'"><font size=+2>Back to Source</font></a>'.
      '<p><a href="'.$thissrcdir.
      '"><font size=+2>Back to Source Directory</font></a>';

}

# ================================================================ Main Handler

sub handler {
  my $r=shift;

  if ($r->header_only) {
     $r->content_type('text/html');
     $r->send_http_header;
     return OK;
  }

# -------------------------------------------------------------- Check filename

  my $fn=$ENV{'form.filename'};

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

  unless ($ENV{'user.home'} eq $r->dir_config('lonHostID')) {
     $r->log_reason($ENV{'user.name'}.' at '.$ENV{'user.domain'}.
         ' trying to publish file '.$ENV{'form.filename'}.
         ' ('.$fn.') - not homeserver ('.$ENV{'user.home'}.')', 
         $r->filename); 
     return HTTP_NOT_ACCEPTABLE;
  }

  $fn=~s/^http\:\/\/[^\/]+\/\~(\w+)/\/home\/$1\/public_html/;

  my $targetdir='';
  $docroot=$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'};
  }
                                 
  
  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;
  } 

unless ($ENV{'form.phase'} eq 'two') {

# --------------------------------- 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;
      }
  }

  %nokey=();

  {
     my $fh=Apache::File->new($r->dir_config('lonIncludes').'/un_keyword.tab');
      map {
          my $word=$_;
          chomp($word);
          $nokey{$word}=1;
      } <$fh>;
  }

  %language=();

  {
     my $fh=Apache::File->new($r->dir_config('lonTabDir').'/language.tab');
      map {
          $_=~/(\w+)\s+([\w\s\-]+)/;
          $language{$1}=$2;
      } <$fh>;
  }

  %cprtag=();

  {
     my $fh=Apache::File->new($r->dir_config('lonIncludes').'/copyright.tab');
      map {
          $_=~/(\w+)\s+([\w\s\-]+)/;
          $cprtag{$1}=$2;
      } <$fh>;
  }

}

# ----------------------------------------------------------- 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"><img align=right src=/adm/lonIcons/lonlogos.gif>');
  my $thisfn=$fn;
   
# ------------------------------------------------------------- Individual file
  {
      $thisfn=~/\.(\w+)$/;
      my $thistype=$1;
      my $thisembstyle=&Apache::lonnet::fileembstyle($thistype);

      my $thistarget=$thisfn;
      
      $thistarget=~s/^\/home/$targetdir/;
      $thistarget=~s/\/public\_html//;

      my $thisdistarget=$thistarget;
      $thisdistarget=~s/^$docroot//;

      my $thisdisfn=$thisfn;
      $thisdisfn=~s/^\/home\/$ENV{'user.name'}\/public_html\///;

      $r->print('<h2>Publishing '.
        &Apache::lonnet::filedescription($thistype).' <tt>'.
        $thisdisfn.'</tt></h2><b>Target:</b> <tt>'.$thisdistarget.'</tt><p>');
  
# ------------ We are publishing from $thisfn to $thistarget with $thisembstyle

       unless ($ENV{'form.phase'} eq 'two') {
          $r->print('<hr>'.&publish($thisfn,$thistarget,$thisembstyle));
       } else {
          $r->print('<hr>'.&phasetwo($thisfn,$thistarget,$thisembstyle));      
       }  

  }
  $r->print('</body></html>');

  return OK;
}

1;
__END__

Internal Server Error

The server encountered an internal error or misconfiguration and was unable to complete your request.

Please contact the server administrator at root@localhost to inform them of the time this error occurred, and the actions you performed just before this error.

More information about this error may be available in the server error log.