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Diff for /loncom/publisher/lonupload.pm between versions 1.1 and 1.33

version 1.1, 2001/04/05 19:35:15 version 1.33, 2006/07/05 22:23:09
Line 1 Line 1
   
 # The LearningOnline Network with CAPA  # The LearningOnline Network with CAPA
 # Handler to upload files into construction space  # Handler to upload files into construction space
 #  #
 # (Handler to retrieve an old version of a file  # $Id$
   #
   # 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.
 #  #
 # (Publication Handler  # LON-CAPA is distributed in the hope that it will be useful,
 #   # but WITHOUT ANY WARRANTY; without even the implied warranty of
 # (TeX Content Handler  # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   # GNU General Public License for more details.
 #  #
 # 05/29/00,05/30,10/11 Gerd Kortemeyer)  # You should have received a copy of the GNU General Public License
   # along with LON-CAPA; if not, write to the Free Software
   # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 #  #
 # 11/28,11/29,11/30,12/01,12/02,12/04,12/23 Gerd Kortemeyer  # /home/httpd/html/adm/gpl.txt
 # 03/23 Guy Albertelli  
 # 03/24,03/29 Gerd Kortemeyer)  
 #  #
 # 03/31,04/03 Gerd Kortemeyer)  # http://www.lon-capa.org/
 #  #
 # 04/05 Gerd Kortemeyer  ###
   
 package Apache::lonupload;  package Apache::lonupload;
   
 use strict;  use strict;
 use Apache::File;  use Apache::File;
 use File::Copy;  use File::Copy;
   use File::Basename;
 use Apache::Constants qw(:common :http :methods);  use Apache::Constants qw(:common :http :methods);
   use Apache::loncacc;
   use Apache::loncommon();
   use Apache::lonnet;
   use HTML::Entities();
   use Apache::lonlocal;
   use Apache::lonnet;
   
   my $DEBUG=0;
   
   sub Debug {
       # Put out the indicated message but only if DEBUG is true.
       if ($DEBUG) {
    my ($r,$message) = @_;
    $r->log_reason($message);
       }
   }
   
 sub phaseone {  sub upfile_store {
     my ($r,$fn,$uname,$udom)=@_;      my $r=shift;
     my $docroot=$r->dir_config('lonDocRoot');  
       my $fname=$env{'form.upfile.filename'};
       $fname=~s/\W//g;
       
       chomp($env{'form.upfile'});
     
       my $datatoken=$env{'user.name'}.'_'.$env{'user.domain'}.
     '_upload_'.$fname.'_'.time.'_'.$$;
       {
          my $fh=Apache::File->new('>'.$r->dir_config('lonDaemons').
                                      '/tmp/'.$datatoken.'.tmp');
          print $fh $env{'form.upfile'};
       }
       return $datatoken;
   }
   
     my $urldir='/res/'.$udom.'/'.$uname.$fn;  
     $urldir=~s/\/[^\/]+$/\//;  
   
     my $resfn=$docroot.'/res/'.$udom.'/'.$uname.$fn;  sub phaseone {
     my $resdir=$resfn;      my ($r,$fn,$uname,$udom,$mode)=@_;
     $resdir=~s/\/[^\/]+$/\//;      my $action = '/adm/upload';
       if ($mode eq 'testbank') {
     $fn=~/^\/(.+)\.(\w+)$/;          $action = '/adm/testbank';
     my $main=$1;      } elsif ($mode eq 'imsimport') {
     my $suffix=$2;          $action = '/adm/imsimport';
         }
     $r->print('<form action=/adm/retrieve method=post>'.      $env{'form.upfile.filename'}=~s/\\/\//g;
       '<input type=hidden name=filename value="'.$fn.'">'.      $env{'form.upfile.filename'}=~s/^.*\/([^\/]+)$/$1/;
               '<input type=hidden name=phase value=two>'.      if ($env{'form.upfile.filename'}) {
               '<table border=2><tr><th>Select</th><th>Version</th>'.   $fn=~s/\/[^\/]+$//;
               '<th>Became this version on ...</th>'.   $fn=~s/([^\/])$/$1\//;
               '<th>Metadata</th></tr>');   $fn.=$env{'form.upfile.filename'};
     my $filename;   $fn=~s/^\///;
     opendir(DIR,$resdir);   $fn=~s/(\/)+/\//g;
     while ($filename=readdir(DIR)) {  
         if ($filename=~/^$main\.(\d+)\.$suffix$/) {  #    Fn is the full path to the destination filename.
    my $version=$1;  #    
            my ($rdev,$rino,$rmode,$rnlink,  
                 $ruid,$rgid,$rrdev,$rsize,   &Debug($r, "Filename for upload: $fn");
                 $ratime,$rmtime,$rctime,   if (($fn) && ($fn!~/\/$/)) {
                 $rblksize,$rblocks)=stat($resdir.'/'.$filename);      $r->print('<form action="'.$action.'" method="post" name="fileupload">'.
            $r->print('<tr><td><input type=radio name=version value="'.        '<input type="hidden" name="phase" value="two" />'.
                      $version.'"></td><th>'.$version.'</th><td>'.        '<input type="hidden" name="datatoken" value="'.
                      localtime($rmtime).'</td><td>'.        &upfile_store.'" />'.
                      '<a href="'.$urldir.$filename.'.meta" target=cat>'.        '<input type="hidden" name="uploaduname" value="'.$uname.
                      'Metadata Version '.$version.'</a></td></tr>');        '" />'.&mt('Store uploaded file as ').
         }                        "<span class='LC_filename'>/priv/$uname/</span>".
     }                        '<input type="text" size="50" name="filename" value="'.$fn.
     closedir(DIR);                        '" /><br />'.
     my ($rdev,$rino,$rmode,$rnlink,        '<br />'.&mt('Choose file type:').'
         $ruid,$rgid,$rrdev,$rsize,  <select name="filetype">
         $ratime,$rmtime,$rctime,   <option value="standard" selected>'.&mt('Regular file').'
         $rblksize,$rblocks)=stat($resfn);   <option value="testbank">'.&mt('Testbank file').'
     $r->print('<tr><td><input type=radio name=version value="new"></td>'.   <option value="imsimport">'.&mt('IMS package').'
               '<th>Current</th><td>'.localtime($rmtime).  </select>'.&Apache::loncommon::help_open_topic("Uploading_File_Options").'
            '</td><td><a href="'.$urldir.$main.'.'.$suffix.'.meta" target=cat>'.  <br />
               'Metadata current version</a></td></tr></table><p>'.  <br />
            '<font size=+1 color=red>Retrieval of an old version will '.  ');
            'overwrite the file currently in construction space</font><p>'.              $r->print('<input type="button" value="'.&mt('Store').'" onClick="javascript:verifyForm()"/></form>');
            '<input type=submit value="Retrieve version"></form>');      # Check for bad extension and warn user
       if ($fn=~/\.(\w+)$/ && 
    (&Apache::loncommon::fileembstyle($1) eq 'hdn')) {
    $r->print('<span class="LC_error">'.&mt('The extension on this file,').
     ' "'.$1.'"'.&mt(', is reserved internally by LON-CAPA.').
     ' <br />'.&mt('Please change the extension.').'</span>');
       } elsif($fn=~/\.(\w+)$/ && 
       !defined(&Apache::loncommon::fileembstyle($1))) {
    $r->print('<span class="LC_error">'.&mt('The extension on this file,').
     ' "'.$1.'"'.&mt(', is not recognized by LON-CAPA.').
     ' <br />'.&mt('Please change the extension.').
     '</span>');
       }
    } else {
       $r->print('<span class="LC_error">'.&mt('Illegal filename.').'</span>');
    }
       } else {
    $r->print('<span class="LC_error">'.&mt('No upload file specified.').'</span>');
       }
 }  }
   
 sub phasetwo {  sub phasetwo {
     my ($r,$fn,$uname,$udom)=@_;      my ($r,$tfn,$uname,$udom,$mode)=@_;
     if ($ENV{'form.version'}) {      my $action = '/adm/upload';
         my $version=$ENV{'form.version'};      my $returnflag = '';
  if ($version eq 'new') {      if ($mode eq 'testbank') {
     $r->print('<h3>Retrieving current (most recent) version</h3>');          $action = '/adm/testbank';
         } else {      } elsif ($mode eq 'imsimport') {
             $r->print('<h3>Retrieving old version '.$version.'</h3>');          $action = '/adm/imsimport';
         }      }
         my $logfile;      my $fn='/priv/'.$uname.'/'.$tfn;
         my $ctarget='/home/'.$uname.'/public_html'.$fn;      $fn=~s/\/+/\//g;
         my $vfn=$fn;      &Debug($r, "Filename is ".$tfn);
         if ($version ne 'new') {      if ($tfn) {
     $vfn=~s/\.(\w+)$/\.$version\.$1/;   &Debug($r, "Filename for tfn = ".$tfn);
         }   my $target='/home/'.$uname.'/public_html'.$tfn;
         my $csource=$r->dir_config('lonDocRoot').'/res/'.$udom.'/'.$uname.$vfn;   &Debug($r, "target -> ".$target);
         unless ($logfile=Apache::File->new('>>'.$ctarget.'.log')) {  #     target is the full filesystem path of the destination file.
   $r->print(   my $base = &File::Basename::basename($fn);
          '<font color=red>No write permission to user directory, FAIL</font>');   my $path = &File::Basename::dirname($fn);
         }   $base    = &HTML::Entities::encode($base,'<>&"');
         print $logfile    my $url  = $path."/".$base; 
 "\n\n================= Retrieve ".localtime()." ================\n".   &Debug($r, "URL is now ".$url);
 "Version: $version\nSource: $csource\nTarget: $ctarget\n";   my $datatoken=$env{'form.datatoken'};
         $r->print('<p>Copying file: ');   if (($fn) && ($datatoken)) {
         if (copy($csource,$ctarget)) {      if ((-e $target) && ($env{'form.override'} ne 'Yes')) {
     $r->print('ok<p>');   $r->print('<form action="'.$action.'" method="post">'.
             print $logfile "Copied sucessfully.\n\n";    &mt('File').' <span class="LC_filename">'.$fn.'</span> '.
         } else {    &mt('exists. Overwrite?').' '.
             my $error=$!;    '<input type="hidden" name="phase" value="two" />'.
     $r->print('fail, '.$error.'<p>');    '<input type="hidden" name="filename" value="'."$url".'" />'.
             print $logfile "Copy failed: $error\n\n";    '<input type="hidden" name="datatoken" value="'.$datatoken.'" />'.
         }    '<input type="submit" name="override" value="'.&mt('Yes').'" /></form>');
         $r->print('<font size=+2><a href="/priv/'.$uname.$fn.      } else {
                   '">Back to '.$fn.'</a></font>');    my $source=$r->dir_config('lonDaemons').'/tmp/'.$datatoken.'.tmp';
    my $dirpath=$path.'/';
    $dirpath=~s/\/+/\//g;
    # Check for bad extension and disallow upload
    if ($fn=~/\.(\w+)$/ && 
       (&Apache::loncommon::fileembstyle($1) eq 'hdn')) {
       $r->print(&mt('File').' <span class="LC_filename">'.$fn.'</span> '.
         &mt('could not be copied.').'<br />'.
         '<span class="LC_error">'.
         &mt('The extension on this file is reserved internally by LON-CAPA.').
         '</span>');
       $r->print('<br /><font size=+2><a href="'.$dirpath.'">'.
         &mt('Back to Directory').'</a></font>');
    } elsif ($fn=~/\.(\w+)$/ && 
    !defined(&Apache::loncommon::fileembstyle($1))) {
       $r->print(&mt('File').' <span class="LC_filename">'.$fn.'</span> '.
         &mt('could not be copied.').'<br />'.
         '<span class="LC_error">'.
         &mt('The extension on this file is not recognized by LON-CAPA.').
         '</span>');
       $r->print('<br /><font size="+2"><a href="'.$dirpath.'">'.
         &mt('Back to Directory').'</a></font>');
    } elsif (-d $target) {
       $r->print('File <span class="LC_filename">'.$fn.'</span> could not be copied.<br />'.
         '<span class="LC_error">'.
         &mt('The target is an existing directory.').
         '</span><br />');
       $r->print('<font size="+2"><a href="'.$dirpath.'">'.
         &mt('Back to Directory').'</a></font>');
    } elsif (copy($source,$target)) {
       chmod(0660, $target); # Set permissions to rw-rw---.
                       if ($mode eq 'testbank' || $mode eq 'imsimport') {
                           $r->print(&mt("Your file - $fn - was uploaded successfully")."<br /><br />");
                           $returnflag = 'ok';
                       } else {
                           $r->print(&mt('File copied.'));
           $r->print('<br /><font size="+2"><a href="'.$url.'">'.
         &mt('View file').'</a></font>');
           $r->print('<br /><font size="+2"><a href="'.$dirpath.'">'.
         &mt('Back to Directory').'</a></font><br />');
                       }
    } else {
       $r->print('Failed to copy: '.$!);
       $r->print('<br /><font size="+2"><a href="'.$path.'">'.
         &mt('Back to Directory').'</a></font>');
    }
       }
    } else {
       $r->print('<span class="LC_error">'.
         &mt('Please use browser "Back" button and pick a filename').
         '</span><br />');
    }
     } else {      } else {
        $r->print(   $r->print('<span class="LC_error">'.
    '<font size=+1 color=red>Please pick a version to retrieve</font><p>');    &mt('Please use browser "Back" button and pick a filename').
        &phaseone($r,$fn,$uname,$udom);    '</span><br />>');
     }      }
       return $returnflag;
 }  }
   
   # ---------------------------------------------------------------- Main Handler
 sub handler {  sub handler {
   
   my $r=shift;      my $r=shift;
   
   my $fn;      my $uname;
       my $udom;
       my $javascript = '';
   #
   # phase two: re-attach user
   #
       if ($env{'form.uploaduname'}) {
    $env{'form.filename'}='/priv/'.$env{'form.uploaduname'}.'/'.
       $env{'form.filename'};
       }
   
   if ($ENV{'form.filename'}) {      unless ($env{'form.phase'} eq 'two') {
       $fn=$ENV{'form.filename'};   my %body_layout = ('rightmargin'  => "0",
       $fn=~s/^http\:\/\/[^\/]+\/\~(\w+)//;     'leftmargin'   => "0",
   } else {     'marginwidth'  => "0",
      $r->log_reason($ENV{'user.name'}.' at '.$ENV{'user.domain'}.     'topmargin'    => "0",
          ' unspecified filename for retrieval', $r->filename);      'marginheight' => "0");
      return HTTP_NOT_FOUND;   my $start_page = 
   }      &Apache::loncommon::start_page('Importing a Testbank file into LON-CAPA',
      undef,
   unless ($fn) {      {'only_body'   => 1,
      $r->log_reason($ENV{'user.name'}.' at '.$ENV{'user.domain'}.      'add_entries' => \%body_layout,
          ' trying to retrieve non-existing file', $r->filename);       'js_ready'    => 1,});
      return HTTP_NOT_FOUND;   my $end_page = 
   }       &Apache::loncommon::end_page({'js_ready' => 1,});
   
           $javascript = qq|
   function verifyForm() {
       var mode = document.fileupload.filetype.options[document.fileupload.filetype.selectedIndex].value
       if (mode == "testbank") {
           document.fileupload.action = "/adm/testbank";
       }
       if (mode == "imsimport") {
           document.fileupload.action = "/adm/imsimport";
       }
       if (mode == "standard") {
           document.fileupload.action = "/adm/upload";
       }
       document.fileupload.submit();
   }
    |;
       }
       ($uname,$udom)=
    &Apache::loncacc::constructaccess($env{'form.filename'},
     $r->dir_config('lonDefDomain'));
       unless (($uname) && ($udom)) {
    $r->log_reason($uname.' at '.$udom.
          ' trying to publish file '.$env{'form.filename'}.
          ' - not authorized', 
          $r->filename); 
    return HTTP_NOT_ACCEPTABLE;
       }
       
       my $fn;
       if ($env{'form.filename'}) {
    $fn=$env{'form.filename'};
    $fn=~s/^http\:\/\/[^\/]+\///;
    $fn=~s/^\///;
    $fn=~s/(\~|priv\/)(\w+)//;
    $fn=~s/\/+/\//g;
       } else {
    $r->log_reason($env{'user.name'}.' at '.$env{'user.domain'}.
          ' unspecified filename for upload', $r->filename); 
    return HTTP_NOT_FOUND;
       }
   
 # ----------------------------------------------------------- Start page output  # ----------------------------------------------------------- Start page output
   
   my $uname=$ENV{'user.name'};  
   my $udom=$ENV{'user.domain'};  
   
   $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(     $javascript = "<script type=\"text/javascript\">\n//<!--\n".
    '<body bgcolor="#FFFFFF"><img align=right src=/adm/lonIcons/lonlogos.gif>');   $javascript."\n// --></script>\n";
   
       $r->print(&Apache::loncommon::start_page('Upload file to Construction Space',
        $javascript));
       
   $r->print('<h1>Retrieve previous versions of <tt>'.$fn.'</tt></h1>');      if (($uname ne $env{'user.name'}) || ($udom ne $env{'user.domain'})) {
    $r->print('<h3><font color=red>'.&mt('Co-Author').': '.$uname.
     &mt(' at ').$udom.'</font></h3>');
       }
   
   if ($ENV{'form.phase'} eq 'two') {      if ($env{'form.phase'} eq 'two') {
       &phasetwo($r,$fn,$uname,$udom);   &phasetwo($r,$fn,$uname,$udom);
   } else {      } else {
       &phaseone($r,$fn,$uname,$udom);   &phaseone($r,$fn,$uname,$udom);
   }      }
   
   $r->print('</body></html>');      $r->print(&Apache::loncommon::end_page());
   return OK;        return OK;  
 }  }
   
   1;
   __END__
   
   =head1 NAME
   
   Apache::lonupload - upload files into construction space
   
   =head1 SYNOPSIS
   
   Invoked by /etc/httpd/conf/srm.conf:
   
    <Location /adm/upload>
    PerlAccessHandler       Apache::lonacc
    SetHandler perl-script
    PerlHandler Apache::lonupload
    ErrorDocument     403 /adm/login
    ErrorDocument     404 /adm/notfound.html
    ErrorDocument     406 /adm/unauthorized.html
    ErrorDocument  500 /adm/errorhandler
    </Location>
   
   =head1 INTRODUCTION
   
   This module uploads a file sitting on a client computer into 
   library server construction space.
   
   This is part of the LearningOnline Network with CAPA project
   described at http://www.lon-capa.org.
   
   =head1 HANDLER SUBROUTINE
   
   This routine is called by Apache and mod_perl.
   
   =over 4
   
   =item *
   
   Initialize variables
   
   =item *
   
   Start page output
   
   =item *
   
   output relevant interface phase (phaseone or phasetwo)
   
   =item *
   
   (phase one is to specify upload file; phase two is to handle conditions
   subsequent to specification--like overwriting an existing file)
   
   =back
   
   =head1 OTHER SUBROUTINES
   
   =over 4
   
   =item *
   
   phaseone() : Interface for specifying file to upload.
   
   =item *
   
   phasetwo() : Interface for handling post-conditions about uploading (such
   as overwriting an existing file).
   
   =item *
   
   upfile_store() : Store contents of uploaded file into temporary space.  Invoked
   by phaseone subroutine.
   
   =back
   
   =cut
Removed from v.1.1  
changed lines
  Added in v.1.33

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