# The LearningOnline Network with CAPA
# Handler to upload files into construction space
#
# $Id: lonupload.pm,v 1.24 2003/11/08 11:13:50 albertel Exp $
#
# 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/
#
###
package Apache::lonupload;
use strict;
use Apache::File;
use File::Copy;
use File::Basename;
use Apache::Constants qw(:common :http :methods);
use Apache::loncacc;
use Apache::loncommon();
use Apache::Log();
use Apache::lonnet;
use HTML::Entities();
use Apache::lonlocal;
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 {
my $r=shift;
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 $datatoken;
}
sub phaseone {
my ($r,$fn,$uname,$udom)=@_;
$ENV{'form.upfile.filename'}=~s/\\/\//g;
$ENV{'form.upfile.filename'}=~s/^.*\/([^\/]+)$/$1/;
if ($ENV{'form.upfile.filename'}) {
$fn=~s/\/[^\/]+$//;
$fn=~s/([^\/])$/$1\//;
$fn.=$ENV{'form.upfile.filename'};
$fn=~s/^\///;
$fn=~s/(\/)+/\//g;
# Fn is the full path to the destination filename.
#
&Debug($r, "Filename for upload: $fn");
if (($fn) && ($fn!~/\/$/)) {
$r->print('
');
# Check for bad extension and warn user
if ($fn=~/\.(\w+)$/ &&
(&Apache::loncommon::fileembstyle($1) eq 'hdn')) {
$r->print(''.&mt('The extension on this file,').
' "'.$1.'"'.&mt(', is reserved internally by LON-CAPA.').
'
'.&mt('Please change the extension.').'');
} elsif($fn=~/\.(\w+)$/ &&
!defined(&Apache::loncommon::fileembstyle($1))) {
$r->print(''.&mt('The extension on this file,').
' "'.$1.'"'.&mt(', is not recognized by LON-CAPA.').
'
'.&mt('Please change the extension.').
'');
}
} else {
$r->print(''.&mt('Illegal filename.').'');
}
} else {
$r->print(''.&mt('No upload file specified.').'');
}
}
sub phasetwo {
my ($r,$tfn,$uname,$udom)=@_;
my $fn='/priv/'.$uname.'/'.$tfn;
$fn=~s/\/+/\//g;
&Debug($r, "Filename is ".$tfn);
if ($tfn) {
&Debug($r, "Filename for tfn = ".$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'};
if (($fn) && ($datatoken)) {
if ((-e $target) && ($ENV{'form.override'} ne 'Yes')) {
$r->print('');
} else {
my $source=$r->dir_config('lonDaemons').'/tmp/'.$datatoken.'.tmp';
# Check for bad extension and disallow upload
if ($fn=~/\.(\w+)$/ &&
(&Apache::loncommon::fileembstyle($1) eq 'hdn')) {
$r->print(&mt('File').' '.$fn.' '.
&mt('could not be copied.').'
'.
''.
&mt('The extension on this file is reserved internally by LON-CAPA.').
'');
$r->print('
'.
&mt('Back to Directory').'');
} elsif ($fn=~/\.(\w+)$/ &&
!defined(&Apache::loncommon::fileembstyle($1))) {
$r->print(&mt('File').' '.$fn.' '.
&mt('could not be copied.').'
'.
''.
&mt('The extension on this file is not recognized by LON-CAPA.').
'');
$r->print('
'.
&mt('Back to Directory').'');
} elsif (-d $target) {
$r->print('File '.$fn.' could not be copied.
'.
''.
&mt('The target is an existing directory.').
'
');
$r->print(''.
&mt('Back to Directory').'');
} elsif (copy($source,$target)) {
chmod(0660, $target); # Set permissions to rw-rw---.
$r->print(&mt('File copied.'));
$r->print('
'.
&mt('View file').'');
$r->print('
'.
&mt('Back to Directory').'
');
} else {
$r->print('Failed to copy: '.$!);
$r->print('
'.
&mt('Back to Directory').'');
}
}
} else {
$r->print(''.
&mt('Please use browser "Back" button and pick a filename').
'
');
}
} else {
$r->print(''.
&mt('Please use browser "Back" button and pick a filename').
'
>');
}
}
# ---------------------------------------------------------------- Main Handler
sub handler {
my $r=shift;
my $uname;
my $udom;
#
# phase two: re-attach user
#
if ($ENV{'form.uploaduname'}) {
$ENV{'form.filename'}='/priv/'.$ENV{'form.uploaduname'}.'/'.
$ENV{'form.filename'};
}
#
($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', $r->filename);
return HTTP_NOT_FOUND;
}
# ----------------------------------------------------------- Start page output
&Apache::loncommon::content_type($r,'text/html');
$r->send_http_header;
$r->print('LON-CAPA Construction Space');
$r->print(&Apache::loncommon::bodytag('Upload file to Construction Space'));
if (($uname ne $ENV{'user.name'}) || ($udom ne $ENV{'user.domain'})) {
$r->print(''.&mt('Co-Author').': '.$uname.
&mt(' at ').$udom.'
');
}
if ($ENV{'form.phase'} eq 'two') {
&phasetwo($r,$fn,$uname,$udom);
} else {
&phaseone($r,$fn,$uname,$udom);
}
$r->print('