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Diff for /loncom/publisher/lonupload.pm between versions 1.3 and 1.16

version 1.3, 2001/05/25 16:36:36 version 1.16, 2003/06/23 21:56:31
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
 #  #
   # $Id$
   #
   # 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.
   #
   # 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/
   #
 # (Handler to retrieve an old version of a file  # (Handler to retrieve an old version of a file
 #  #
 # (Publication Handler  # (Publication Handler
 #   # 
 # (TeX Content Handler  # (TeX Content Handler
 #  #
   # YEAR=2000
 # 05/29/00,05/30,10/11 Gerd Kortemeyer)  # 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  # 11/28,11/29,11/30,12/01,12/02,12/04,12/23 Gerd Kortemeyer
   # YEAR=2001
 # 03/23 Guy Albertelli  # 03/23 Guy Albertelli
 # 03/24,03/29 Gerd Kortemeyer)  # 03/24,03/29 Gerd Kortemeyer)
 #  #
 # 03/31,04/03 Gerd Kortemeyer)  # 03/31,04/03 Gerd Kortemeyer)
 #  #
 # 04/05,04/09,05/25 Gerd Kortemeyer  # 04/05,04/09,05/25,06/23,06/24,08/22 Gerd Kortemeyer
   # 11/29 Matthew Hall
   #
   ###
   
 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::loncacc;
   use Apache::loncommon();
   use Apache::Log();
   use Apache::lonnet;
   use HTML::Entities();
   
   my $DEBUG=0;
   
   sub Debug {
     
     # Marshall the parameters.
     
     my $r       = shift;
     my $log     = $r->log;
     my $message = shift;
     
     # Put out the indicated message butonly if DEBUG is false.
     
     if ($DEBUG) {
       $log->debug($message);
     }
   }
   
 sub upfile_store {  sub upfile_store {
     my $r=shift;      my $r=shift;
Line 45  sub upfile_store { Line 97  sub upfile_store {
   
   
 sub phaseone {  sub phaseone {
     my ($r,$fn,$uname,$udom)=@_;     my ($r,$fn,$uname,$udom)=@_;
      $ENV{'form.upfile.filename'}=~s/\\/\//g;
      $ENV{'form.upfile.filename'}=~s/^.*\/([^\/]+)$/$1/;
      if ($ENV{'form.upfile.filename'}) {
     $fn=~s/\/[^\/]+$//;      $fn=~s/\/[^\/]+$//;
     $fn=~s/([^\/])$/$1\//;      $fn=~s/([^\/])$/$1\//;
     $fn.=$ENV{'form.upfile.filename'};      $fn.=$ENV{'form.upfile.filename'};
     $fn=~s/^\///;      $fn=~s/^\///;
     $fn=~s/(\/)+/\//g;      $fn=~s/(\/)+/\//g;
   
   #    Fn is the full path to the destination filename.
   #    
   
       &Debug($r, "Filename for upload: $fn");
     if (($fn) && ($fn!~/\/$/)) {      if (($fn) && ($fn!~/\/$/)) {
       $r->print(        $r->print(
  '<form action=/adm/upload method=post>'.   '<form action=/adm/upload method=post>'.
Line 61  sub phaseone { Line 120  sub phaseone {
  '<input type=text size=50 name=filename value="/priv/'.   '<input type=text size=50 name=filename value="/priv/'.
   $uname.'/'.$fn.'"><br>'.    $uname.'/'.$fn.'"><br>'.
  '<input type=submit value="Store"></form>');   '<input type=submit value="Store"></form>');
         # Check for bad extension and warn user
         if ($fn=~/\.(\w+)$/ && 
     (&Apache::loncommon::fileembstyle($1) eq 'hdn')) {
     $r->print(
    '<font color=red>'.
    'The extension on this file, "'.$1.
    '", is reserved internally by LON-CAPA. <br \>'.
    'Please change the extension.'.
    '</font>');
         } elsif($fn=~/\.(\w+)$/ && 
         !defined(&Apache::loncommon::fileembstyle($1))) {
     $r->print(
    '<font color=red>'.
    'The extension on this file, "'.$1.
    '", is not recognized by LON-CAPA. <br \>'.
    'Please change the extension.'.
    '</font>');
         }
   } else {    } else {
       $r->print('<font color=red>Illegal filename.</font>');        $r->print('<font color=red>Illegal filename.</font>');
   }    }
    } else {
        $r->print('<font color=red>No upload file specified.</font>');
    }
 }  }
   
 sub phasetwo {  sub phasetwo {
     my ($r,$fn,$uname,$udom)=@_;     my ($r,$fn,$uname,$udom)=@_;
      &Debug($r, "Filename is ".$fn);
      if ($fn=~/^\/priv\/$uname\//) {
       &Debug($r, "Filename after priv substitution: ".$fn);
     my $tfn=$fn;      my $tfn=$fn;
     $tfn=~s/^\/(\~|priv)\/(\w+)//;      $tfn=~s/^\/(\~|priv)\/(\w+)//;
       &Debug($r, "Filename for tfn = ".$tfn);
     my $target='/home/'.$uname.'/public_html'.$tfn;      my $target='/home/'.$uname.'/public_html'.$tfn;
       &Debug($r, "target -> ".$target);
   #     target is the full filesystem path of the destination file.
       my $base = &File::Basename::basename($fn);
       my $path = &File::Basename::dirname($fn);
       $base    = &HTML::Entities::encode($base);
       my $url  = $path."/".$base; 
       &Debug($r, "URL is now ".$url);
     my $datatoken=$ENV{'form.datatoken'};      my $datatoken=$ENV{'form.datatoken'};
     if (($fn) && ($datatoken)) {      if (($fn) && ($datatoken)) {
  if ((-e $target) && ($ENV{'form.override'} ne 'Yes')) {   if ((-e $target) && ($ENV{'form.override'} ne 'Yes')) {
Line 78  sub phasetwo { Line 169  sub phasetwo {
  '<form action=/adm/upload method=post>'.   '<form action=/adm/upload method=post>'.
  'File <tt>'.$fn.'</tt> exists. Overwrite? '.   'File <tt>'.$fn.'</tt> exists. Overwrite? '.
  '<input type=hidden name=phase value=two>'.   '<input type=hidden name=phase value=two>'.
  '<input type=hidden name=filename value="'.$fn.'">'.   '<input type=hidden name=filename value="'."$url".'">'.
  '<input type=hidden name=datatoken value="'.$datatoken.'">'.   '<input type=hidden name=datatoken value="'.$datatoken.'">'.
  '<input type=submit name=override value="Yes"></form>');   '<input type=submit name=override value="Yes"></form>');
        } else {         } else {
            my $source=$r->dir_config('lonDaemons').             my $source=$r->dir_config('lonDaemons').
                              '/tmp/'.$datatoken.'.tmp';                               '/tmp/'.$datatoken.'.tmp';
            if (copy($source,$target)) {             # Check for bad extension and disallow upload
      if ($fn=~/\.(\w+)$/ && 
          (&Apache::loncommon::fileembstyle($1) eq 'hdn')) {
          $r->print(
    'File <tt>'.$fn.'</tt> could not be copied.<br />'.
    '<font color=red>'.
    'The extension on this file is reserved internally by LON-CAPA.'.
    '</font>');
      } elsif ($fn=~/\.(\w+)$/ && 
       !defined(&Apache::loncommon::fileembstyle($1))) {
          $r->print(
    'File <tt>'.$fn.'</tt> could not be copied.<br />'.
    '<font color=red>'.
    'The extension on this file is not recognized by LON-CAPA.'.
    '</font>');
      } elsif (copy($source,$target)) {
          chmod(0660, $target); # Set permissions to rw-rw---.
       $r->print('File copied.');        $r->print('File copied.');
               $r->print('<p><font size=+2><a href="'.$fn.                $r->print('<p><font size=+2><a href="'.$url.
                         '">View file</a></font>');                          '">View file</a></font>');
                 $r->print('<p><font size=+2><a href="'.$path.
                           '">Back to Directory</a></font>');
    } else {     } else {
               $r->print('Failed to copy: '.$!);                $r->print('Failed to copy: '.$!);
    }     }
Line 97  sub phasetwo { Line 206  sub phasetwo {
    '<font size=+1 color=red>Please pick a filename</font><p>');     '<font size=+1 color=red>Please pick a filename</font><p>');
        &phaseone($r,$fn,$uname,$udom);         &phaseone($r,$fn,$uname,$udom);
     }      }
     } else {
       $r->print(
      '<font size=+1 color=red>Please pick a filename</font><p>');
       &phaseone($r,$fn,$uname,$udom);
     }
 }  }
   
   # ---------------------------------------------------------------- Main Handler
 sub handler {  sub handler {
   
   my $r=shift;    my $r=shift;
Line 106  sub handler { Line 221  sub handler {
   my $uname;    my $uname;
   my $udom;    my $udom;
   
   unless (($uname,$udom)=    ($uname,$udom)=
     &Apache::loncacc::constructaccess(      &Apache::loncacc::constructaccess(
              $ENV{'form.filename'},$r->dir_config('lonDefDomain'))) {   $ENV{'form.filename'},$r->dir_config('lonDefDomain'));
     unless (($uname) && ($udom)) {
      $r->log_reason($uname.' at '.$udom.       $r->log_reason($uname.' at '.$udom.
          ' trying to publish file '.$ENV{'form.filename'}.           ' trying to publish file '.$ENV{'form.filename'}.
          ' - not authorized',            ' - not authorized', 
Line 156  sub handler { Line 272  sub handler {
   $r->print('</body></html>');    $r->print('</body></html>');
   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.1.3  
changed lines
  Added in v.1.16

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