Skip to content

HTTPS clone URL

Subversion checkout URL

You can clone with HTTPS or Subversion.

Download ZIP
tree: 1a5afaa26d
Fetching contributors…

Cannot retrieve contributors at this time

310 lines (222 sloc) 6.748 kb
package C4::UploadedFile;
# Copyright (C) 2007 LibLime
# Galen Charlton <galen.charlton@liblime.com>
#
# This file is part of Koha.
#
# Koha 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.
#
# Koha 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 Koha; if not, write to the Free Software Foundation, Inc.,
# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
use strict;
#use warnings; FIXME - Bug 2505
use C4::Context;
use C4::Auth qw/get_session/;
use IO::File;
use vars qw($VERSION);
BEGIN {
# set the version for version checking
$VERSION = 3.00;
}
=head1 NAME
C4::UploadedFile - manage files uploaded by the user
for later processing.
=head1 SYNOPSIS
# create and store data
my $uploaded_file = C4::UploadedFile->new($sessionID);
my $fileID = $uploaded_file->id();
$uploaded_file->name('c:\temp\file.mrc');
$uploaded_file->max_size(1024);
while ($have_more_data) {
$uploaded_file->stash($data, $bytes_read);
}
$uploaded_file->done();
# check status of current file upload
my $progress = C4::UploadedFile->upload_progress($sessionID);
# get file handle for reading uploaded file
my $uploaded_file = C4::UploadedFile->fetch($fileID);
my $fh = $uploaded_file->fh();
Stores files uploaded by the user from their web browser. The
uploaded files are temporary and at present are not guaranteed
to survive beyond the life of the user's session.
This module allows for tracking the progress of the file
currently being uploaded.
TODO: implement secure persistant storage of uploaded files.
=cut
=head1 METHODS
=cut
=head2 new
my $uploaded_file = C4::UploadedFile->new($sessionID);
Creates a new object to represent the uploaded file. Requires
the current session ID.
=cut
sub new {
my $class = shift;
my $sessionID = shift;
my $self = {};
$self->{'sessionID'} = $sessionID;
$self->{'fileID'} = Digest::MD5::md5_hex(Digest::MD5::md5_hex(time().{}.rand().{}.$$));
# FIXME - make staging area configurable
my $TEMPROOT = "/tmp";
my $OUTPUTDIR = "$TEMPROOT/$sessionID";
mkdir $OUTPUTDIR;
my $tmp_file_name = "$OUTPUTDIR/$self->{'fileID'}";
my $fh = new IO::File $tmp_file_name, "w";
unless (defined $fh) {
return undef;
}
$fh->binmode(); # Windows compatibility
$self->{'fh'} = $fh;
$self->{'tmp_file_name'} = $tmp_file_name;
$self->{'max_size'} = 0;
$self->{'progress'} = 0;
$self->{'name'} = '';
bless $self, $class;
$self->_serialize();
my $session = get_session($sessionID);
$session->param('current_upload', $self->{'fileID'});
$session->flush();
return $self;
}
sub _serialize {
my $self = shift;
my $prefix = "upload_" . $self->{'fileID'};
my $session = get_session($self->{'sessionID'});
# temporarily take file handle out of structure
my $fh = $self->{'fh'};
delete $self->{'fh'};
$session->param($prefix, $self);
$session->flush();
$self->{'fh'} =$fh;
}
=head2 id
my $fileID = $uploaded_file->id();
=cut
sub id {
my $self = shift;
return $self->{'fileID'};
}
=head2 name
my $name = $uploaded_file->name();
$uploaded_file->name($name);
Accessor method for the name by which the file is to be known.
=cut
sub name {
my $self = shift;
if (@_) {
$self->{'name'} = shift;
$self->_serialize();
} else {
return $self->{'name'};
}
}
=head2 filename
my $filename = $uploaded_file->filename();
Accessor method for the name by which the file is to be known.
=cut
sub filename {
my $self = shift;
if (@_) {
$self->{'tmp_file_name'} = shift;
$self->_serialize();
} else {
return $self->{'tmp_file_name'};
}
}
=head2 max_size
my $max_size = $uploaded_file->max_size();
$uploaded_file->max_size($max_size);
Accessor method for the maximum size of the uploaded file.
=cut
sub max_size {
my $self = shift;
@_ ? $self->{'max_size'} = shift : $self->{'max_size'};
}
=head2 stash
$uploaded_file->stash($dataref, $bytes_read);
Write C<$dataref> to the temporary file. C<$bytes_read> represents
the number of bytes (out of C<$max_size>) transmitted so far.
=cut
sub stash {
my $self = shift;
my $dataref = shift;
my $bytes_read = shift;
my $fh = $self->{'fh'};
print $fh $$dataref;
my $percentage = int(($bytes_read / $self->{'max_size'}) * 100);
if ($percentage > $self->{'progress'}) {
$self->{'progress'} = $percentage;
$self->_serialize();
}
}
=head2 done
$uploaded_file->done();
Indicates that all of the bytes have been uploaded.
=cut
sub done {
my $self = shift;
$self->{'progress'} = 'done';
$self->{'fh'}->close();
$self->_serialize();
}
=head2 upload_progress
my $upload_progress = C4::UploadFile->upload_progress($sessionID);
Returns (as an integer from 0 to 100) the percentage
progress of the current file upload.
=cut
sub upload_progress {
my ($class, $sessionID) = shift;
my $session = get_session($sessionID);
my $fileID = $session->param('current_upload');
my $reported_progress = 0;
if (defined $fileID and $fileID ne "") {
my $file = C4::UploadedFile->fetch($sessionID, $fileID);
my $progress = $file->{'progress'};
if (defined $progress) {
if ($progress eq "done") {
$reported_progress = 100;
} else {
$reported_progress = $progress;
}
}
}
return $reported_progress;
}
=head2 fetch
my $uploaded_file = C4::UploadedFile->fetch($sessionID, $fileID);
Retrieves an uploaded file object from the current session.
=cut
sub fetch {
my $class = shift;
my $sessionID = shift;
my $fileID = shift;
my $session = get_session($sessionID);
my $prefix = "upload_$fileID";
my $self = $session->param($prefix);
my $fh = new IO::File $self->{'tmp_file_name'}, "r";
$self->{'fh'} = $fh;
bless $self, $class;
return $self;
}
=head2 fh
my $fh = $uploaded_file->fh();
Returns an IO::File handle to read the uploaded file.
=cut
sub fh {
my $self = shift;
return $self->{'fh'};
}
1;
__END__
=head1 AUTHOR
Koha Development Team <http://koha-community.org/>
Galen Charlton <galen.charlton@liblime.com>
=cut
Jump to Line
Something went wrong with that request. Please try again.