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version 1.1, 2001/06/23 18:26:40 version 1.81, 2007/03/30 20:37:31
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 # The LearningOnline Network with CAPA  # The LearningOnline Network with CAPA
 # Handler to rename files, etc, in construction space  # Handler to rename files, etc, in construction space
 #  #
 # (Handler to retrieve an old version of a file  #  This file responds to the various buttons and events
   #  in the top frame of the construction space directory.
   #  Each event is processed in two phases.  The first phase
   #  presents a page that describes the proposed action to the user
   #  and requests confirmation.  The second phase commits the action
   #  and displays a page showing the results of the action.
 #  #
 # (Publication Handler  
 #   
 # (TeX Content Handler  
 #  #
 # 05/29/00,05/30,10/11 Gerd Kortemeyer)  # $Id$
 #  #
 # 11/28,11/29,11/30,12/01,12/02,12/04,12/23 Gerd Kortemeyer  # Copyright Michigan State University Board of Trustees
 # 03/23 Guy Albertelli  
 # 03/24,03/29 Gerd Kortemeyer)  
 #  #
 # 03/31,04/03,05/02,05/09,06/23 Gerd Kortemeyer)  # This file is part of the LearningOnline Network with CAPA (LON-CAPA).
 #  #
 # 06/23 Gerd Kortemeyer  # LON-CAPA is free software; you can redistribute it and/or modify
   # it under the terms of the GNU General Public License as published by
   # the Free Software Foundation; either version 2 of the License, or
   # (at your option) any later version.
   #
   # LON-CAPA is distributed in the hope that it will be useful,
   # but WITHOUT ANY WARRANTY; without even the implied warranty of
   # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   # GNU General Public License for more details.
   #
   # You should have received a copy of the GNU General Public License
   # along with LON-CAPA; if not, write to the Free Software
   # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
   #
   # /home/httpd/html/adm/gpl.txt
   #
   # http://www.lon-capa.org/
   #
   =pod
   
   =head1 NAME
   
   Apache::loncfile - Construction space file management.
   
   =head1 SYNOPSIS
    
    Content handler for buttons on the top frame of the construction space 
   directory.
   
   =head1 INTRODUCTION
   
     loncfile is invoked when buttons in the top frame of the construction 
   space directory listing are clicked.   All operations proceed in two phases.
   The first phase describes to the user exactly what will be done.  If the user
   confirms the operation, the second phase commits the operation and indicates
   completion.  When the user dismisses the output of phase2, they are returned to
   an "appropriate" directory listing in general.
   
       This is part of the LearningOnline Network with CAPA project
   described at http://www.lon-capa.org.
   
   =head2 Subroutines
   
   =cut
   
 package Apache::loncfile;  package Apache::loncfile;
   
 use strict;  use strict;
 use Apache::File;  use Apache::File;
   use File::Basename;
 use File::Copy;  use File::Copy;
   use HTML::Entities();
 use Apache::Constants qw(:common :http :methods);  use Apache::Constants qw(:common :http :methods);
 use Apache::loncacc;  use Apache::loncacc;
   use Apache::lonnet;
   use Apache::loncommon();
   use Apache::lonlocal;
   use LONCAPA qw(:DEFAULT :match);
   
   
   my $DEBUG=0;
   my $r; # Needs to be global for some stuff RF.
   
   =pod
   
   =item Debug($request, $message)
   
     If debugging is enabled puts out a debugging message determined by the
     caller.  The debug message goes to the Apache error log file. Debugging
     is enabled by setting the module global DEBUG variable to nonzero (TRUE).
   
    Parameters:
   
   =over 4
    
   =item $request - The current request operation.
   
   =item $message - The message to put in the log file.
   
   =back
     
    Returns:
      nothing.
   
   =cut
   
   sub Debug {
       # Put out the indicated message butonly if DEBUG is true.
       if ($DEBUG) {
    my ($r,$message) = @_;
    $r->log_reason($message);
       }
   }
   
   =pod
   
   =item URLToPath($url)
   
     Convert a URL to a file system path.
     
     In order to manipulate the construction space objects, it is necessary
     to access url identified objects a filespace objects.  This function
     translates a construction space URL to a file system path.
    Parameters:
   
   =over 4
   
   =item  Url    - string [in] The url to convert.
     
   =back
     
    Returns:
   
   =over 4
   
   =item  The corresponding file system path. 
   
   =back
   
   Global References
   
   =over 4
   
   =item  $r      - Request object [in] Referenced in the &Debug calls.
   
   =back
   
   =cut
   
   sub URLToPath {
       my $Url = shift;
       &Debug($r, "UrlToPath got: $Url");
       $Url=~ s/\/+/\//g;
       $Url=~ s/^http\:\/\/[^\/]+//;
       $Url=~ s/^\///;
       $Url=~ s/(\~|priv\/)($match_username)\//\/home\/$2\/public_html\//;
       &Debug($r, "Returning $Url \n");
       return $Url;
   }
   
   sub url {
       my $fn=shift;
       $fn=~s/^\/home\/($match_username)\/public\_html/\/priv\/$1/;
       $fn=&HTML::Entities::encode($fn,'<>"&');
       return $fn;
   }
   
   sub display {
       my $fn=shift;
       $fn=~s-^/home/($match_username)/public_html-/priv/$1-;
       return '<tt>'.$fn.'</tt>';
   }
   
   
   # see if the file is
   # a) published (return 0 if not)
   # b) if, so obsolete (return 0 if not)
   
   sub obsolete_unpub {
       my ($user,$domain,$construct)=@_;
       my $published=$construct;
       $published=~
    s/^\/home\/$user\/public\_html\//\/home\/httpd\/html\/res\/$domain\/$user\//;
       if (-e $published) {
    if (&Apache::lonnet::metadata($published,'obsolete')) {
       return 1;
    }
    return 0;
       } else {
    return 1;
       }
   }
   
   # see if directory is empty
   # ignores any .meta, .save, .bak, and .log files created for a previously
   # published file, which has since been marked obsolete and deleted.
   sub empty_directory {
       my ($dirname,$phase) = @_;
       if (opendir DIR, $dirname) {
           my @files = grep(!/^\.\.?$/, readdir(DIR)); # ignore . and ..
           if (@files) { 
               my @orphans = grep(/\.(meta|save|log|bak)$/,@files);
               if (scalar(@files) - scalar(@orphans) > 0) { 
                   return 0;
               } else {
                   if (($phase eq 'Delete2') && (@orphans > 0)) {
                       foreach my $file (@orphans) {
                           if ($file =~ /\.(meta|save|log|bak)$/) {
                               unlink($dirname.$file);
                           }
                       }
                   }
               }
           }
           closedir(DIR);
           return 1;
       }
       return 0;
   }
   
   =pod
   
   =item exists($user, $domain, $file)
   
      Determine if a resource file name has been published or exists
      in the construction space.
   
    Parameters:
   
   =over 4
   
   =item  $user   - string [in] - Name of the user for which to check.
   
   =item  $domain - string [in] - Name of the domain in which the resource
                             might have been published.
   
   =item  $file   - string [in] - Name of the file.
   
   =back
   
   Returns:
   
   =over 4
   
   =item  string - Either where the resource exists as an html string that can
              be embedded in a dialog or an empty string if the resource
              does not exist.
     
   =back
   
   =cut
   
   sub exists {
       my ($user, $domain, $construct) = @_;
       my $published=$construct;
       $published=~
    s/^\/home\/$user\/public\_html\//\/home\/httpd\/html\/res\/$domain\/$user\//;
       my $result='';    
       if ( -d $construct ) {
    return &mt('Error: destination for operation is an existing directory.');
       }
       if ( -e $published) {
    $result.='<p><font color="red">'.&mt('Warning: target file exists, and has been published!').'</font></p>';
       } elsif ( -e $construct) {
    $result.='<p><font color="red">'.&mt('Warning: target file exists!').'</font></p>';
       }
       return $result;
   }
   
   =pod
   
   =item checksuffix($old, $new)
           
     Determine if a resource filename suffix (the stuff after the .) would change
   as a result of this operation.
   
    Parameters:
   
   =over 4
   
   =item  $old   = string [in]  Previous filename.
   
   =item  $new   = string [in]  Resultant filename.
   
   =back
   
    Returns:
   
   =over 4
   
   =item    Empty string if everything worked.
   
   =item    String containing an error message if there was a problem.
   
   =back
   
   =cut
   
   sub checksuffix {
       my ($old,$new) = @_;
       my $result;
       my $oldsuffix;
       my $newsuffix;
       if ($new=~m:(.*/*)([^/]+)\.(\w+)$:) { $newsuffix=$3; }
       if ($old=~m:(.*)/+([^/]+)\.(\w+)$:) { $oldsuffix=$3; }
       if ($oldsuffix ne $newsuffix) {
    $result.=
               '<p><font color="red">'.&mt('Warning: change of MIME type!').'</font></p>';
       }
       return $result;
   }
   
   sub cleanDest {
       my ($request,$dest,$subdir,$fn,$uname)=@_;
       #remove bad characters
       my $foundbad=0;
       if ($subdir && $dest =~/\./) {
    $foundbad=1;
    $dest=~s/\.//g;
       }
       if  ($dest=~/[\#\?&%\":]/) {
    $foundbad=1;
    $dest=~s/[\#\?&%\":]//g;
       }
       if ($dest=~m|/|) {
    my ($newpath)=($dest=~m|(.*)/|);
    $newpath=&relativeDest($fn,$newpath,$uname);
    if (! -d "$newpath") {
       $request->print("<p><font color=\"red\">".&mt('You have requested to create file in directory [_1] which doesn\'t exist. The requested directory path has been removed from the requested file name.','"<tt>'.$newpath.'</tt>"')."</font></p>");
       $dest=~s|.*/||;
    }
       }
       if ($foundbad) {
    $request->print("<p><font color=\"red\">".&mt('Invalid characters in requested name have been removed.')."</font></p>");
       }
       return $dest;
   }
   
   sub relativeDest {
       my ($fn,$newfilename,$uname)=@_;
       if ($newfilename=~/^\//) {
   # absolute, simply add path
    $newfilename='/home/'.$uname.'/public_html/';
       } else {
    my $dir=$fn;
    $dir=~s/\/[^\/]+$//;
    $newfilename=$dir.'/'.$newfilename;
       }
       $newfilename=~s://+:/:g; # remove duplicate /
       while ($newfilename=~m:/\.\./:) {
    $newfilename=~ s:/[^/]+/\.\./:/:g; #remove dir/..
       }
       return $newfilename;
   }
   
   =pod
   
   =item CloseForm1($request, $user, $file)
   
      Close of a form on the successful completion of phase 1 processing
   
   Parameters:
   
   =over 4
   
   =item  $request - Apache Request Object [in] - Apache server request object.
   
   =item  $cancelurl - the url to go to on cancel.
   
   =back
   
   =cut
   
   sub CloseForm1 {
       my ($request,  $fn) = @_;
       $request->print('<p><input type="submit" value="'.&mt('Continue').'" /></p></form>');
       $request->print('<form action="'.&url($fn).
       '" method="POST"><p><input type="submit" value="'.&mt('Cancel').'" /></p></form>');
   }
   
   
   =pod
   
   =item CloseForm2($request, $user, $directory)
   
      Successfully close off the phase 2 form.
   
   Parameters:
   
   =over 4
   
   =item   $request    - Apache Request object [in] - The request that is being
                    executed.
   
   =item   $user       - string [in] - Name of the user that is initiating the
                    request.
   
   =item   $directory  - string [in] - Directory in which the operation is 
                    being done relative to the top level construction space
                    directory.
   
   =back
   
   =cut
   
   sub CloseForm2 {
       my ($request, $user, $fn) = @_;
       $request->print('<h3><a href="'.&url($fn).'/">'.&mt('Done').'</a></h3>');
   }
   
   =pod
   
   =item Rename1($request, $filename, $user, $domain, $dir)
    
      Perform phase 1 processing of the file rename operation.
   
   Parameters:
   
   =over 4
   
   =item  $request   - Apache Request Object [in] The request object for the 
   current request.
   
   =item  $filename  - The filename relative to construction space.
   
   =item  $user      - Name of the user making the request.
   
   =item  $domain    - User login domain.
   
   =item  $dir       - Directory specification of the path to the file.
   
   =back
   
   Side effects:
   
   =over 4
   
   =item A new form is displayed prompting for confirmation.  The newfilename
   hidden field of this form is loaded with
   new filename relative to the current directory ($dir).
   
   =back
   
   =cut  
   
   sub Rename1 {
       my ($request, $user, $domain, $fn, $newfilename, $style) = @_;
   
       if(-e $fn) {
    if($newfilename) {
       # is dest a dir
       if ($style eq 'move') {
    if (-d $newfilename) {
       if ($fn =~ m|/([^/]*)$|) { $newfilename .= '/'.$1; }
    }
       }
       if ($newfilename =~ m|/[^\.]+$|) {
    #no extension add on original extension
    if ($fn =~ m|/[^\.]*\.([^\.]+)$|) {
       $newfilename.='.'.$1;
    }
       }
       $request->print(&checksuffix($fn, $newfilename));
       #renaming a dir, delete the trailing /
               #remove second to last element for current dir
       if (-d $fn) {
    $newfilename=~/\.(\w+)$/;
    if (&Apache::loncommon::fileembstyle($1) eq 'ssi') {
       $request->print('<br /><font color="red">'.
       &mt('Cannot change MIME type of a directory').
       '</font>'.
       '<br /><a href="'.&url($fn).'">'.&mt('Cancel').'</a>');
       return;
    }
    $newfilename=~s/\/[^\/]+\/([^\/]+)$/\/$1/;
       }
       $newfilename=~s://+:/:g; # remove duplicate /
       while ($newfilename=~m:/\.\./:) {
    $newfilename=~ s:/[^/]+/\.\./:/:g; #remove dir/..
       }
       my $return=&exists($user, $domain, $newfilename);
       $request->print($return);
       if ($return =~/^Error:/) {
    $request->print('<br /><a href="'.&url($fn).'">'.&mt('Cancel').'</a>');
    return;
       }
       unless (&obsolete_unpub($user,$domain,$fn)) {
    $request->print('<h3>'.&mt('Cannot rename or move non-obsolete published file').'</h3>'.
    '<br /><a href="'.&url($fn).'">'.&mt('Cancel').'</a>');
    return;
       }
       my $action;
       if ($style eq 'rename') {
    $action=&mt('Rename');
       } else {
    $action=&mt('Move');
       }
       $request->print('<input type="hidden" name="newfilename" value="'.
       $newfilename.
       '" /><p>'.$action.' '.&display($fn).
       '</tt><br />to '.&display($newfilename).'?</p>');
       &CloseForm1($request, $fn);
    } else {
       $request->print('<p>'.&mt('No new filename specified.').'</p></form>');
       return;
    }
       } else {
    $request->print('<p> '.&mt('No such file').': '.&display($fn).'</p></form>');
    return;
       }
       
   }
   
   =pod
   
   =item Delete1
   
      Performs phase 1 processing of the delete operation.  In phase one
     we just check to be sure the file exists.
   
   Parameters:
   
   =over 4
   
   =item   $request   - Apache Request Object [in] request object for the current 
                   request.
   
   =item   $user      - string [in]  Name of the user initiating the request.
   
   =item   $domain    - string [in]  Domain the initiating user is logged in as
   
   =item   $filename  - string [in]  Source filename.
   
   =back
   
   =cut
   
   sub Delete1 {
       my ($request, $user, $domain, $fn) = @_;
   
       if( -e $fn) {
    $request->print('<input type="hidden" name="newfilename" value="'.
    $fn.'"/>');
           if (-d $fn) {
               unless (&empty_directory($fn,'Delete1')) {
                   $request->print('<h3>'.&mt('Only empty directories may be deleted.').'</h3>'.
                               'You must delete the contents of the directory first.<br />'.
                               '<br /><a href="'.&url($fn).'">'.&mt('Cancel').'</a>');
                   return;
               }
           } else { 
       unless (&obsolete_unpub($user,$domain,$fn)) {
           $request->print('<h3>'.&mt('Cannot delete non-obsolete published file').'</h3>'.
       '<br /><a href="'.&url($fn).'">'.&mt('Cancel').'</a>');
           return;
       }
           }
    $request->print('<p>'.&mt('Delete').' '.&display($fn).'?</p>');
    &CloseForm1($request, $fn);
       } else {
    $request->print('<p>'.&mt('No such file').': '.&display($fn).'</p></form>');
       }
   }
   
   =pod
   
   =item Copy1($request, $user, $domain, $filename, $newfilename)
   
      Performs phase 1 processing of the construction space copy command.
      Ensure that the source file exists.  Ensure that a destination exists,
      also warn if the destination already exists.
   
   Parameters:
   
   =over 4
   
   =item   $request   - Apache Request Object [in] request object for the current 
                   request.
   
   =item   $user      - string [in]  Name of the user initiating the request.
   
   =item   $domain    - string [in]  Domain the initiating user is logged in as
   
   =item   $fn  - string [in]  Source filename.
   
   =item   $newfilename-string [in]  Destination filename.
   
   =back
   
   =cut
   
   sub Copy1 {
       my ($request, $user, $domain, $fn, $newfilename) = @_;
   
       if(-e $fn) {
    # is dest a dir
    if (-d $newfilename) {
       if ($fn =~ m|/([^/]*)$|) { $newfilename .= '/'.$1; }
    }
    if ($newfilename =~ m|/[^\.]+$|) {
       #no extension add on original extension
       if ($fn =~ m|/[^\.]*\.([^\.]+)$|) { $newfilename.='.'.$1; }
    } 
    $newfilename=~s://+:/:g; # remove duplicate /
    while ($newfilename=~m:/\.\./:) {
       $newfilename=~ s:/[^/]+/\.\./:/:g; #remove dir/..
    }
    $request->print(&checksuffix($fn,$newfilename));
    my $return=&exists($user, $domain, $newfilename);
    $request->print($return);
    if ($return =~/^Error:/) {
       $request->print('<br /><a href="'.&url($fn).'">'.&mt('Cancel').'</a>');
       return;
    }
    $request->print('<input type="hidden" name="newfilename" value="'.
    $newfilename.
    '" /><p>'.&mt('Copy').' '.&display($fn).'<br />to '.
    &display($newfilename).'?</p>');
    &CloseForm1($request, $fn);
       } else {
    $request->print('<p>'.&mt('No such file').': '.&display($fn).'</p></form>');
       }
   }
   
   =pod
   
   =item NewDir1
    
     Does all phase 1 processing of directory creation:
     Ensures that the user provides a new directory name,
     and that the directory does not already exist.
   
   Parameters:
   
   =over 4
   
   =item   $request  - Apache Request Object [in] - Server request object for the
                  current url.
   
   =item   $username - Name of the user that is requesting the directory creation.
   
   =item $domain - Domain user is in
   
   =item   $fn     - source file.
   
   =item   $newdir   - Name of the directory to be created; path relative to the 
                  top level of construction space.
   =back
   
   Side Effects:
   
   =over 4
   
   =item A new form is displayed.  Clicking on the confirmation button
   causes the newdir operation to transition into phase 2.  The hidden field
   "newfilename" is set with the construction space path to the new directory.
   
   
   =back
   
   =cut
   
   
   sub NewDir1 {
       my ($request, $username, $domain, $fn, $newfilename, $mode) = @_;
   
       my $result=&exists($username,$domain,$newfilename);
       if ($result) {
    $request->print('<font color="red">'.$result.'</font></form>');
       } else {
    if ($mode eq 'testbank') {
       $request->print('<input type="hidden" name="callingmode" value="testbank">');
    } elsif ($mode eq 'imsimport') {
       $request->print('<input type="hidden" name="callingmode" value="imsimport">');
    }
    $request->print('<input type="hidden" name="newfilename" value="'.
    $newfilename.'" /><p>'.&mt('Make new directory').' '.
    &display($newfilename).'?</p>');
    &CloseForm1($request, $fn);
       }
   }
   
   
   sub Decompress1 {
       my ($request, $user, $domain, $fn) = @_;
       if( -e $fn) {
       $request->print('<input type="hidden" name="newfilename" value="'.$fn.'"/>');
       $request->print('<p>'.&mt('Decompress').' '.&display($fn).'?</p>');
       &CloseForm1($request, $fn);
       } else {
    $request->print('<p>'.&mt('No such file').': '.&display($fn).'</p></form>');
       }
   }
   
   =pod
   
   =item NewFile1
    
     Does all phase 1 processing of file creation:
     Ensures that the user provides a new filename, adds proper extension
     if needed and that the file does not already exist, if it is a html,
     problem, page, or sequence, it then creates a form link to hand the
     actual creation off to the proper handler.
   
   Parameters:
   
   =over 4
   
   =item   $request  - Apache Request Object [in] - Server request object for the
                  current url.
   
   =item   $username - Name of the user that is requesting the directory creation.
   
   =item   $domain   - Name of the domain of the user
   
   =item   $fn      - Source file name
   
   =item   $newfilename
                     - Name of the file to be created; no path information
   =back
   
   Side Effects:
   
   =over 4
   
   =item 2 new forms are displayed.  Clicking on the confirmation button
   causes the browser to attempt to load the specfied URL, allowing the
   proper handler to take care of file creation. There is also a Cancel
   button which returns you to the driectory listing you came from
   
   =back
   
   =cut
   
   sub NewFile1 {
       my ($request, $user, $domain, $fn, $newfilename) = @_;
   
       if ($env{'form.action'} =~ /new(.+)file/) {
    my $extension=$1;
   
           ##Informs User (name).(number).(extension) not allowed 
    if($newfilename =~ /\.(\d+)\.(\w+)$/){
       $r->print('<font color="red">'.$newfilename.
         ' - '.&mt('Bad Filename').'<br />('.&mt('name').').('.&mt('number').').('.&mt('extension').') '.
         ' '.&mt('Not Allowed').'</font>');
       return;
    }
    if($newfilename =~ /(\:\:\:|\&\&\&|\_\_\_)/){
       $r->print('<font color="red">'.$newfilename.
         ' - '.&mt('Bad Filename').'<br />('.&mt('Must not include').' '.$1.') '.
         ' '.&mt('Not Allowed').'</font>');
       return;
    }
    if ($newfilename !~ /\Q.$extension\E$/) {
       if ($newfilename =~ m|/[^/.]*\.(?:[^/.]+)$|) {
    #already has an extension strip it and add in expected one
    $newfilename =~ s|(/[^./])\.(?:[^.]+)$|$1|;
       }
       $newfilename.=".$extension";
    }
       }
       my $result=&exists($user,$domain,$newfilename);
       if($result) {
    $request->print('<span class="LC_error">'.$result.'</span></form>');
       } else {
    $request->print('<p>'.&mt('Make new file').' '.&display($newfilename).'?</p>');
    $request->print('</form>');
    $request->print('<form action="'.&url($newfilename).
    '" method="POST"><p><input type="submit" value="'.&mt('Continue').'" /></p></form>');
    $request->print('<form action="'.&url($fn).
    '" method="POST"><p><input type="submit" value="'.&mt('Cancel').'" /></p></form>');
       }
   }
   
   =pod
   
   =item phaseone($r, $fn, $uname, $udom)
   
     Peforms phase one processing of the request.  In phase one, error messages
   are returned if the request cannot be performed (e.g. attempts to manipulate
   files that are nonexistent).  If the operation can be performed, what is
   about to be done will be presented to the user for confirmation.  If the
   user confirms the request, then phase two is executed, the action 
   performed and reported to the user.
   
    Parameters:
   
   =over 4
   
   =item $r  - request object [in] - The Apache request being executed.
   
   =item $fn = string [in] - The filename being manipulated by the 
                                request.
   
   =item $uname - string [in] Name of user logged in and doing this action.
   
   =item $udom  - string [in] Domain name under which the user logged in. 
   
   =back
   
   =cut
   
 sub phaseone {  sub phaseone {
     my ($r,$fn,$uname,$udom)=@_;      my ($r,$fn,$uname,$udom)=@_;
     my $docroot=$r->dir_config('lonDocRoot');    
       my $doingdir=0;
       if ($env{'form.action'} eq 'newdir') { $doingdir=1; }
       my $newfilename=&cleanDest($r,$env{'form.newfilename'},$doingdir,$fn,$uname);
       $newfilename=&relativeDest($fn,$newfilename,$uname);
       $r->print('<form action="/adm/cfile" method="post">'.
         '<input type="hidden" name="qualifiedfilename" value="'.$fn.'" />'.
         '<input type="hidden" name="phase" value="two" />'.
         '<input type="hidden" name="action" value="'.$env{'form.action'}.'" />');
     
       if ($env{'form.action'} eq 'rename') {
    &Rename1($r, $uname, $udom, $fn, $newfilename, 'rename');
       } elsif ($env{'form.action'} eq 'move') {
    &Rename1($r, $uname, $udom, $fn, $newfilename, 'move');
       } elsif ($env{'form.action'} eq 'delete') { 
    &Delete1($r, $uname, $udom, $fn);
       } elsif ($env{'form.action'} eq 'decompress') {
    &Decompress1($r, $uname, $udom, $fn);
       } elsif ($env{'form.action'} eq 'copy') { 
    if($newfilename) {
       &Copy1($r, $uname, $udom, $fn, $newfilename);
    } else {
       $r->print('<p>'.&mt('No new filename specified.').'</p></form>');
    }
       } elsif ($env{'form.action'} eq 'newdir') {
    my $mode = '';
    if (exists($env{'form.callingmode'}) ) {
       $mode = $env{'form.callingmode'};
    }   
    &NewDir1($r, $uname, $udom, $fn, $newfilename, $mode);
       }  elsif ($env{'form.action'} eq 'newfile' ||
         $env{'form.action'} eq 'newhtmlfile' ||
         $env{'form.action'} eq 'newproblemfile' ||
         $env{'form.action'} eq 'newpagefile' ||
         $env{'form.action'} eq 'newsequencefile' ||
         $env{'form.action'} eq 'newrightsfile' ||
         $env{'form.action'} eq 'newstyfile' ||
                 $env{'form.action'} eq 'newlibraryfile' ||
         $env{'form.action'} eq 'Select Action') {
           my $empty=&mt('Type Name Here');
    if (($newfilename!~/\/$/) && ($newfilename!~/$empty$/)) {
       &NewFile1($r, $uname, $udom, $fn, $newfilename);
    } else {
       $r->print('<p>'.&mt('No new filename specified.').'</p></form>');
    }
       }
   }
   
   =pod
   
   =item Rename2($request, $user, $directory, $oldfile, $newfile)
   
   Performs phase 2 processing of a rename reequest.   This is where the
   actual rename is performed.
   
   Parameters
   
   =over 4
   
   =item $request - Apache request object [in] The request being processed.
   
   =item $user  - string [in] The name of the user initiating the request.
   
   =item $directory - string [in] The name of the directory relative to the
                    construction space top level of the renamed file.
   
   =item $oldfile - Name of the file.
   
   =item $newfile - Name of the new file.
   
   =back
   
   Returns:
   
   =over 4
   
   =item 1 Success.
   
   =item 0 Failure.
   
   =cut
   
   sub Rename2 {
   
       my ($request, $user, $directory, $oldfile, $newfile) = @_;
   
       &Debug($request, "Rename2 directory: ".$directory." old file: ".$oldfile.
      " new file ".$newfile."\n");
       &Debug($request, "Target is: ".$directory.'/'.
      $newfile);
       if (-e $oldfile) {
   
    my $oRN=$oldfile;
    my $nRN=$newfile;
    unless (rename($oldfile,$newfile)) {
       $request->print('<font color="red">'.&mt('Error').': '.$!.'</font>');
       return 0;
    }
    ## If old name.(extension) exits, move under new name.
    ## If it doesn't exist and a new.(extension) exists  
    ## delete it (only concern when renaming over files)
    my $tmp1=$oRN.'.meta';
    my $tmp2=$nRN.'.meta';
    if(-e $tmp1){
       unless(rename($tmp1,$tmp2)){ }
    } elsif(-e $tmp2){
       unlink $tmp2;
    }
    $tmp1=$oRN.'.save';
    $tmp2=$nRN.'.save';
    if(-e $tmp1){
       unless(rename($tmp1,$tmp2)){ }
    } elsif(-e $tmp2){
       unlink $tmp2;
    }
    $tmp1=$oRN.'.log';
    $tmp2=$nRN.'.log';
    if(-e $tmp1){
       unless(rename($tmp1,$tmp2)){ }
    } elsif(-e $tmp2){
       unlink $tmp2;
    }
    $tmp1=$oRN.'.bak';
    $tmp2=$nRN.'.bak';
    if(-e $tmp1){
       unless(rename($tmp1,$tmp2)){ }
    } elsif(-e $tmp2){
       unlink $tmp2;
    }
       } else {
    $request->print("<p> ".&mt('No such file').": ".&display($oldfile).'</p></form>');
    return 0;
       }
       return 1;
   }
   
   =pod
   
     my $urldir='/res/'.$udom.'/'.$uname.$fn;  =item Delete2($request, $user, $filename)
     $urldir=~s/\/[^\/]+$/\//;  
   
     my $resfn=$docroot.'/res/'.$udom.'/'.$uname.$fn;    Performs phase two of a delete.  The user has confirmed that they want 
     my $resdir=$resfn;  to delete the selected file.   The file is deleted and the results of the
     $resdir=~s/\/[^\/]+$/\//;  delete attempt are indicated.
   
     $fn=~/\/([^\/]+)\.(\w+)$/;  Parameters:
     my $main=$1;  
     my $suffix=$2;  =over 4
   
     if (-e $resfn) {    =item $request - Apache Request object [in] the request object for the current
     $r->print('<form action=/adm/retrieve method=post>'.                   delete operation.
       '<input type=hidden name=filename value="/~'.$uname.$fn.'">'.  
               '<input type=hidden name=phase value=two>'.  =item $user    - string [in]  The name of the user initiating the delete
               '<table border=2><tr><th>Select</th><th>Version</th>'.                   request.
               '<th>Became this version on ...</th>'.  
               '<th>Metadata</th></tr>');  =item $filename - string [in] The name of the file, relative to construction
     my $filename;                    space, to delete.
     opendir(DIR,$resdir);  
     while ($filename=readdir(DIR)) {  =back
         if ($filename=~/^$main\.(\d+)\.$suffix$/) {  
    my $version=$1;  Returns:
            my ($rdev,$rino,$rmode,$rnlink,    1 - success.
                 $ruid,$rgid,$rrdev,$rsize,    0 - Failure.
                 $ratime,$rmtime,$rctime,  
                 $rblksize,$rblocks)=stat($resdir.'/'.$filename);  =cut
            $r->print('<tr><td><input type=radio name=version value="'.  
                      $version.'"></td><th>'.$version.'</th><td>'.  sub Delete2 {
                      localtime($rmtime).'</td><td>'.      my ($request, $user, $filename) = @_;
                      '<a href="'.$urldir.$filename.'.meta" target=cat>'.      if (-d $filename) { 
                      'Metadata Version '.$version.'</a>');   unless (&empty_directory($filename,'Delete2')) { 
            if (&Apache::lonnet::fileembstyle($suffix) eq 'ssi') {      $request->print('<font color="red"> '.&mt('Error: Directory Non Empty').'</font>'); 
                $r->print(      return 0;
                     '&nbsp;&nbsp;<a target=cat href="/adm/diff?filename=/~'.   } else {   
                         $uname.$fn.      if(-e $filename) {
                         '&versionone=priv&versiontwo='.$version.   unless(rmdir($filename)) {
                         '">Diffs with Version '.$version.'</a>');      $request->print('<font color="red">'.&mt('Error').': '.$!.'</font>');
            }      return 0;
            $r->print('</a></td></tr>');   }
       } else {
    $request->print('<p> '.&mt('No such file').'. </p></form>');
    return 0;
       }
    }
       } else {
    if(-e $filename) {
       unless(unlink($filename)) {
    $request->print('<font color="red">'.&mt('Error').': '.$!.'</font>');
    return 0;
       }
    } else {
       $request->print('<p> '.&mt('No such file').'. </p></form>');
       return 0;
    }
       }
       return 1;
   }
   
   =pod
   
   =item Copy2($request, $username, $dir, $oldfile, $newfile)
   
      Performs phase 2 of a copy.  The file is copied and the status 
      of that copy is reported back to the user.
   
   =over 4
   
   =item $request - Apache request object [in]; the apache request currently
                    being executed.
   
   =item $username - string [in] Name of the user who is requesting the copy.
   
   =item $dir - string [in] Directory path relative to the construction space
                of the destination file.
   
   =item $oldfile - string [in] Name of the source file.
   
   =item $newfile - string [in] Name of the destination file.
   
   
   =back
   
   Returns 0 failure, and 1 successs.
   
   =cut
   
   sub Copy2 {
       my ($request, $username, $dir, $oldfile, $newfile) = @_;
       &Debug($request ,"Will try to copy $oldfile to $newfile");
       if(-e $oldfile) {
           if ($oldfile eq $newfile) {
               $request->print('<font color="red"> '.&mt('Warning').': '.&mt('Name of new file is the same as name of old file').' - '.&mt('no action taken').'.</font>');
               return 1;
         }          }
    unless (copy($oldfile, $newfile)) {
       $request->print('<font color="red"> '.&mt('copy Error').': '.$!.'</font>');
       return 0;
    } elsif (!chmod(0660, $newfile)) {
       $request->print('<font color="red"> '.&mt('chmod error').': '.$!.'</font>');
       return 0;
    } elsif (-e $oldfile.'.meta' && 
    !copy($oldfile.'.meta', $newfile.'.meta') &&
    !chmod(0660, $newfile.'.meta')) {
       $request->print('<font color="red"> '.&mt('copy metadata error').
       ': '.$!.'</font>');
       return 0;
    } else {
       return 1;
    }
       } else {
    $request->print('<p> '.&mt('No such file').' </p>');
    return 0;
     }      }
     closedir(DIR);      return 1;
     my ($rdev,$rino,$rmode,$rnlink,  
         $ruid,$rgid,$rrdev,$rsize,  
         $ratime,$rmtime,$rctime,  
         $rblksize,$rblocks)=stat($resfn);  
     $r->print('<tr><td><input type=radio name=version value="new"></td>'.  
               '<th>Current</th><td>'.localtime($rmtime).  
            '</td><td><a href="'.$urldir.$main.'.'.$suffix.'.meta" target=cat>'.  
               'Metadata current version</a>');             
            if (&Apache::lonnet::fileembstyle($suffix) eq 'ssi') {  
                $r->print(  
                     '&nbsp;&nbsp;<a target=cat href="/adm/diff?filename=/~'.  
                         $uname.$fn.  
                         '&versionone=priv'.  
                         '">Diffs with current Version</a>');  
            }  
            $r->print('</td></tr></table><p>'.  
            '<font size=+1 color=red>Retrieval of an old version will '.  
            'overwrite the file currently in construction space</font><p>'.  
            '<input type=submit value="Retrieve version"></form>');  
 } else {  
     $r->print('<h3>No previous versions published.</h3>');  
 }  }
   
   =pod
   
   =item NewDir2($request, $user, $newdirectory)
   
    Performs phase 2 processing of directory creation.  This involves creating the directory and
    reporting the results of that creation to the user.
   
   Parameters:
   =over 4
   
   =item $request  - Apache request object [in].  Object representing the current HTTP request.
   
   =item $user - string [in] The name of the user that is initiating the request.
   
   =item $newdirectory - string [in] The full path of the directory being created.
   
   =back
   
   Returns 0 - failure 1 - success.
   
   =cut
   
   sub NewDir2 {
       my ($request, $user, $newdirectory) = @_;
     
       unless(mkdir($newdirectory, 02770)) {
    $request->print('<font color="red">'.&mt('Error').': '.$!.'</font>');
    return 0;
       }
       unless(chmod(02770, ($newdirectory))) {
    $request->print('<font color="red"> '.&mt('Error').': '.$!.'</font>');
    return 0;
       }
       return 1;
 }  }
   
   sub decompress2 {
       my ($r, $user, $dir, $file) = @_;
       &Apache::lonnet::appenv('cgi.file' => $file);
       &Apache::lonnet::appenv('cgi.dir' => $dir);
       my $result=&Apache::lonnet::ssi_body('/cgi-bin/decompress.pl');
       $r->print($result);
       &Apache::lonnet::delenv('cgi.file');
       &Apache::lonnet::delenv('cgi.dir');
       return 1;
   }
   
   =pod
   
   =item phasetwo($r, $fn, $uname, $udom)
   
      Controls the phase 2 processing of file management
      requests for construction space.  In phase one, the user
      was asked to confirm the operation.  In phase 2, the operation
      is performed and the result is shown.
   
     The strategy is to break out the processing into specific action processors
     named action2 where action is the requested action and the 2 denotes 
     phase 2 processing.
   
   Parameters:
   
   =over 4
   
   =item  $r     - Apache Request object [in] The request object for this httpd
              transaction.
   
   =item  $fn    - string [in]  A filename indicating the object that is being
              manipulated.
   
   =item  $uname - string [in] The name of the user initiating the file management
              request.
   
   =item  $udom  - string  [in] The login domain of the user initiating the
              file management request.
   =back
   
   =cut
   
 sub phasetwo {  sub phasetwo {
     my ($r,$fn,$uname,$udom)=@_;      my ($r,$fn,$uname,$udom)=@_;
     if ($ENV{'form.version'}) {      
         my $version=$ENV{'form.version'};      &Debug($r, "loncfile - Entering phase 2 for $fn");
  if ($version eq 'new') {      
     $r->print('<h3>Retrieving current (most recent) version</h3>');      # Break down the file into its component pieces.
         } else {      
             $r->print('<h3>Retrieving old version '.$version.'</h3>');      my $dir; # Directory path
         }      my $main; # Filename.
         my $logfile;      my $suffix; # Extension.
         my $ctarget='/home/'.$uname.'/public_html'.$fn;      if ($fn=~m:(.*)/([^/]+):) {
         my $vfn=$fn;   $dir=$1; # Directory path
         if ($version ne 'new') {   $main=$2; # Filename.
     $vfn=~s/\.(\w+)$/\.$version\.$1/;      }
         }      if($main=~m:\.(\w+)$:){ # Fixes problems with filenames with no extensions
         my $csource=$r->dir_config('lonDocRoot').'/res/'.$udom.'/'.$uname.$vfn;   $suffix=$1; #This is the actually filename extension if it exists
         unless ($logfile=Apache::File->new('>>'.$ctarget.'.log')) {   $main=~s/\.\w+$//; #strip the extension
   $r->print(      }
          '<font color=red>No write permission to user directory, FAIL</font>');      my $dest;                       #
         }      my $dest_dir;                   # On success this is where we'll go.
         print $logfile       my $disp_newname;               #
 "\n\n================= Retrieve ".localtime()." ================\n".      my $dest_newname;               #
 "Version: $version\nSource: $csource\nTarget: $ctarget\n";      &Debug($r,"loncfile::phase2 dir = $dir main = $main suffix = $suffix");
         $r->print('<p>Copying file: ');      &Debug($r,"    newfilename = ".$env{'form.newfilename'});
         if (copy($csource,$ctarget)) {  
     $r->print('ok<p>');      my $conspace=$fn;
             print $logfile "Copied sucessfully.\n\n";      
         } else {      &Debug($r,"loncfile::phase2 Full construction space name: $conspace");
             my $error=$!;      
     $r->print('fail, '.$error.'<p>');      &Debug($r,"loncfie::phase2 action is $env{'form.action'}");
             print $logfile "Copy failed: $error\n\n";      
         }      # Select the appropriate processing sub.
         $r->print('<font size=+2><a href="/priv/'.$uname.$fn.      if ($env{'form.action'} eq 'decompress') { 
                   '">Back to '.$fn.'</a></font>');    $main .= '.'.$suffix;
    if(!&decompress2($r, $uname, $dir, $main)) {
       return ;
    }
    $dest = $dir."/.";
       } elsif ($env{'form.action'} eq 'rename' ||
        $env{'form.action'} eq 'move') {
    if($env{'form.newfilename'}) {
       if (!defined($dir)) {
    $fn=~m:^(.*)/:;
    $dir=$1; 
       }
       if(!&Rename2($r, $uname, $dir, $fn, $env{'form.newfilename'})) {
    return;
       }
       $dest = $dir."/";
       $dest_newname = $env{'form.newfilename'};
       $env{'form.newfilename'} =~ /.+(\/.+$)/;
       $disp_newname = $1;
       $disp_newname =~ s/\///;
    }
       } elsif ($env{'form.action'} eq 'delete') { 
    if(!&Delete2($r, $uname, $env{'form.newfilename'})) {
       return ;
    }
    # Once a resource is deleted, we just list the directory that
    # previously held it.
    #
    $dest = $dir."/."; # Parent dir.
       } elsif ($env{'form.action'} eq 'copy') { 
    if($env{'form.newfilename'}) {
       if(!&Copy2($r, $uname, $dir, $fn, $env{'form.newfilename'})) {
    return ;
       }
       $dest = $env{'form.newfilename'};
         } else {
       $r->print('<p>'.&mt('No New filename specified').'</p></form>');
       return;
    }
   
       } elsif ($env{'form.action'} eq 'newdir') {
           my $newdir= $env{'form.newfilename'};
    if(!&NewDir2($r, $uname, $newdir)) {
       return;
    }
    $dest = $newdir."/";
       }
       if ( ($env{'form.action'} eq 'newdir') && ($env{'form.phase'} eq 'two') && ( ($env{'form.callingmode'} eq 'testbank') || ($env{'form.callingmode'} eq 'imsimport') ) ) {
    $r->print('<h3><a href="javascript:self.close()">'.&mt('Done').'</a></h3>');
     } else {      } else {
        $r->print(          if ($env{'form.action'} eq 'rename') {
    '<font size=+1 color=red>Please pick a version to retrieve</font><p>');              $r->print('<h3><a href="'.&url($dest).'">'.&mt('Return to Directory').'</a></h3>');
        &phaseone($r,$fn,$uname,$udom);              $r->print('<h3><a href="'.&url($dest_newname).'">'.$disp_newname.'</a></h3>');
           } else {
       $r->print('<h3><a href="'.&url($dest).'">'.&mt('Done').'</a></h3>');
    }
     }      }
 }  }
   
 sub handler {  sub handler {
   
   my $r=shift;      $r=shift;
   
   my $fn;      &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'},['decompress','action','filename','newfilename']);
   
   if ($ENV{'form.filename'}) {      &Debug($r, "loncfile.pm - handler entered");
       $fn=$ENV{'form.filename'};      &Debug($r, " filename: ".$env{'form.filename'});
       $fn=~s/^http\:\/\/[^\/]+//;      &Debug($r, " newfilename: ".$env{'form.newfilename'});
   } else {  #
      $r->log_reason($ENV{'user.name'}.' at '.$ENV{'user.domain'}.  # Determine the root filename
          ' unspecified filename for cfile', $r->filename);   # This could come in as "filename", which actually is a URL, or
      return HTTP_NOT_FOUND;  # as "qualifiedfilename", which is indeed a real filename in filesystem
   }  #
       my $fn;
   unless ($fn) {   
      $r->log_reason($ENV{'user.name'}.' at '.$ENV{'user.domain'}.  
          ' trying to cfile non-existing file', $r->filename);   
      return HTTP_NOT_FOUND;  
   }   
   
 # ----------------------------------------------------------- Start page output      if ($env{'form.filename'}) {
   my $uname;   &Debug($r, "test: $env{'form.filename'}");
   my $udom;   $fn=&unescape($env{'form.filename'});
    $fn=&URLToPath($fn);
       }  elsif($ENV{'QUERY_STRING'} && $env{'form.phase'} ne 'two') {  
    #Just hijack the script only the first time around to inject the
    #correct information for further processing
    $fn=&unescape($env{'form.decompress'});
    $fn=&URLToPath($fn);
    $env{'form.action'}="decompress";
       } elsif ($env{'form.qualifiedfilename'}) {
    $fn=$env{'form.qualifiedfilename'};
       } else {
    &Debug($r, "loncfile::handler - no form.filename");
    $r->log_reason($env{'user.name'}.' at '.$env{'user.domain'}.
          ' unspecified filename for cfile', $r->filename); 
    return HTTP_NOT_FOUND;
       }
   
       unless ($fn) { 
    &Debug($r, "loncfile::handler - doctored url is empty");
    $r->log_reason($env{'user.name'}.' at '.$env{'user.domain'}.
          ' trying to cfile non-existing file', $r->filename); 
    return HTTP_NOT_FOUND;
       } 
   
   ($uname,$udom)=  # ----------------------------------------------------------- Start page output
     &Apache::loncacc::constructaccess($fn,$r->dir_config('lonDefDomain'));      my $uname;
   unless (($uname) && ($udom)) {      my $udom;
      $r->log_reason($uname.' at '.$udom.  
          ' trying to publish file '.$ENV{'form.filename'}.  
          ' ('.$fn.') - not authorized',   
          $r->filename);   
      return HTTP_NOT_ACCEPTABLE;  
   }  
   
   $fn=~s/\/\~(\w+)//;      ($uname,$udom)=
    &Apache::loncacc::constructaccess($fn,$r->dir_config('lonDefDomain'));
       &Debug($r, 
      "loncfile::handler constructaccess uname = $uname domain = $udom");
       unless (($uname) && ($udom)) {
    $r->log_reason($uname.' at '.$udom.
          ' trying to manipulate file '.$env{'form.filename'}.
          ' ('.$fn.') - not authorized', 
          $r->filename); 
    return HTTP_NOT_ACCEPTABLE;
       }
   
   $r->content_type('text/html');  
   $r->send_http_header;  
   
   $r->print('<html><head><title>LON-CAPA Construction Space</title></head>');      &Apache::loncommon::content_type($r,'text/html');
       $r->send_http_header;
   
   $r->print(      my (%loaditem,$js);
    '<body bgcolor="#FFFFFF"><img align=right src=/adm/lonIcons/lonlogos.gif>');  
   
       if ( ($env{'form.action'} eq 'newdir') && ($env{'form.phase'} eq 'two') && ( ($env{'form.callingmode'} eq 'testbank') || ($env{'form.callingmode'} eq 'imsimport') ) ) {
    my $newdirname = $env{'form.newfilename'};
    $js = qq|
   <script type="text/javascript">
   function writeDone() {
       var winName = window.opener
       window.focus();
       winName.document.dataForm.newdir.value = "$newdirname"
       setTimeout("self.close()",10000)
   }
     </script>
   |;
    $loaditem{'onload'} = "writeDone()";
       }
       
       $r->print(&Apache::loncommon::start_page('Construction Space File Operation',
        $js,
        {'add_entries' => \%loaditem,}));
       
   $r->print('<h1>Construction Space <tt>'.$fn.'</tt></h1>');      $r->print('<h3>'.&mt('Location').': '.&display($fn).'</h3>');
       
   if (($uname ne $ENV{'user.name'}) || ($udom ne $ENV{'user.domain'})) {      if (($uname ne $env{'user.name'}) || ($udom ne $env{'user.domain'})) {
           $r->print('<h3><font color=red>Co-Author: '.$uname.' at '.$udom.   $r->print('<h3><font color="red">'.&mt('Co-Author').': '.$uname.' at '.$udom.
                '</font></h3>');    '</font></h3>');
   }      }
   
   
   if ($ENV{'form.phase'} eq 'two') {      &Debug($r, "loncfile::handler Form action is $env{'form.action'} ");
 #      &phasetwo($r,$fn,$uname,$udom);      if ($env{'form.action'} eq 'delete') {
   } else {        $r->print('<h3>'.&mt('Delete').'</h3>');
 #      &phaseone($r,$fn,$uname,$udom);      } elsif ($env{'form.action'} eq 'rename') {
   }   $r->print('<h3>'.&mt('Rename').'</h3>');
       } elsif ($env{'form.action'} eq 'move') {
    $r->print('<h3>'.&mt('Move').'</h3>');
       } elsif ($env{'form.action'} eq 'newdir') {
    $r->print('<h3>'.&mt('New Directory').'</h3>');
       } elsif ($env{'form.action'} eq 'decompress') {
    $r->print('<h3>'.&mt('Decompress').'</h3>');
       } elsif ($env{'form.action'} eq 'copy') {
    $r->print('<h3>'.&mt('Copy').'</h3>');
       } elsif ($env{'form.action'} eq 'newfile' ||
        $env{'form.action'} eq 'newhtmlfile' ||
        $env{'form.action'} eq 'newproblemfile' ||
        $env{'form.action'} eq 'newpagefile' ||
        $env{'form.action'} eq 'newsequencefile' ||
        $env{'form.action'} eq 'newrightsfile' ||
        $env{'form.action'} eq 'newstyfile' ||
                $env{'form.action'} eq 'newlibraryfile' ||
        $env{'form.action'} eq 'Select Action' ) {
    $r->print('<h3>'.&mt('New Resource').'</h3>');
       } else {
    $r->print('<p>'.&mt('Unknown Action').' '.$env{'form.action'}.' </p>'.
     &Apache::loncommon::end_page());
    return OK;  
       }
       if ($env{'form.phase'} eq 'two') {
    &Debug($r, "loncfile::handler  entering phase2");
    &phasetwo($r,$fn,$uname,$udom);
       } else {
    &Debug($r, "loncfile::handler  entering phase1");
    &phaseone($r,$fn,$uname,$udom);
       }
   
   $r->print('</body></html>');      $r->print(&Apache::loncommon::end_page());
   return OK;        return OK;  
 }  }
   
 1;  1;
 __END__  __END__
   
Removed from v.1.1  
changed lines
  Added in v.1.81

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