Koha/UploadedFile.pm

   1 package Koha::UploadedFile;
   2
   3 # Copyright Rijksmuseum 2016
   4 #
   5 # This file is part of Koha.
   6 #
   7 # Koha is free software; you can redistribute it and/or modify it under the
   8 # terms of the GNU General Public License as published by the Free Software
   9 # Foundation; either version 3 of the License, or (at your option) any later
  10 # version.
  11 #
  12 # Koha is distributed in the hope that it will be useful, but WITHOUT ANY
  13 # WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
  14 # A PARTICULAR PURPOSE.  See the GNU General Public License for more details.
  15 #
  16 # You should have received a copy of the GNU General Public License along
  17 # with Koha; if not, write to the Free Software Foundation, Inc.,
  18 # 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  19
  20 use Modern::Perl;
  21 use File::Spec;
  22
  23 use parent qw(Koha::Object);
  24
  25 =head1 NAME
  26
  27 Koha::UploadedFile - Koha::Object class for single uploaded file
  28
  29 =head1 SYNOPSIS
  30
  31     use Koha::UploadedFile;
  32
  33     # store record in uploaded_files
  34     my $upload = Koha::UploadedFile->new({ [columns and values] });
  35
  36     # get a file handle on an uploaded_file
  37     my $fh = $upload->file_handle;
  38
  39     # get full path
  40     my $path = $upload->full_path;
  41
  42     # delete uploaded file
  43     $upload->delete;
  44
  45 =head1 DESCRIPTION
  46
  47 Allows regular CRUD operations on uploaded_files via Koha::Object / DBIx.
  48
  49 The delete method also takes care of deleting files. The full_path method
  50 returns a fully qualified path for an upload.
  51
  52 Additional methods include: file_handle, httpheaders.
  53
  54 =head1 METHODS
  55
  56 =head2 INSTANCE METHODS
  57
  58 =head3 delete
  59
  60 Delete uploaded file.
  61 It deletes not only the record, but also the actual file (unless you pass
  62 the keep_file parameter).
  63
  64 Returns number of deleted records (1 or 0E0), or -1 for unknown.
  65 Please keep in mind that a deleted record does not automatically imply a
  66 deleted file; a warning may have been raised.
  67 (TODO: Use exceptions.)
  68
  69 =cut
  70
  71 sub delete {
  72     my ( $self, $params ) = @_;
  73
  74     my $name = $self->filename;
  75     my $file = $self->full_path;
  76
  77     my $retval = $self->SUPER::delete;
  78     return $retval if $params->{keep_file};
  79
  80     if( ! -e $file ) {
  81         warn "Removing record for $name within category ".
  82             $self->uploadcategorycode. ", but file was missing.";
  83     } elsif( ! unlink($file) ) {
  84         warn "Problem while deleting: $file";
  85     }
  86     return $retval;
  87 }
  88
  89 =head3 full_path
  90
  91 Returns the fully qualified path name for an uploaded file.
  92
  93 =cut
  94
  95 sub full_path {
  96     my ( $self ) = @_;
  97     my $path = File::Spec->catfile(
  98         $self->permanent
  99             ? $self->permanent_directory
 100             : C4::Context->temporary_directory,
 101         $self->dir,
 102         $self->hashvalue. '_'. $self->filename,
 103     );
 104     return $path;
 105 }
 106
 107 =head3 file_handle
 108
 109 Returns a file handle for an uploaded file.
 110
 111 =cut
 112
 113 sub file_handle {
 114     my ( $self ) = @_;
 115     $self->{_file_handle} = IO::File->new( $self->full_path, "r" );
 116     return if !$self->{_file_handle};
 117     $self->{_file_handle}->binmode;
 118     return $self->{_file_handle};
 119 }
 120
 121 =head3 httpheaders
 122
 123 httpheaders returns http headers for a retrievable upload.
 124
 125 Will be extended by report 14282
 126
 127 =cut
 128
 129 sub httpheaders {
 130     my ( $self ) = @_;
 131     if( $self->filename =~ /\.pdf$/ ) {
 132         return (
 133             '-type'       => 'application/pdf',
 134             'Content-Disposition' => 'inline; filename='.$self->filename,
 135         );
 136     } else {
 137         return (
 138             '-type'       => 'application/octet-stream',
 139             '-attachment' => $self->filename,
 140         );
 141     }
 142 }
 143
 144 =head2 CLASS METHODS
 145
 146 =head3 permanent_directory
 147
 148 Returns root directory for permanent storage
 149
 150 =cut
 151
 152 sub permanent_directory {
 153     my ( $class ) = @_;
 154     return C4::Context->config('upload_path');
 155 }
 156
 157 =head3 _type
 158
 159 Returns name of corresponding DBIC resultset
 160
 161 =cut
 162
 163 sub _type {
 164     return 'UploadedFile';
 165 }
 166
 167 =head1 AUTHOR
 168
 169 Marcel de Rooy (Rijksmuseum)
 170
 171 Koha Development Team
 172
 173 =cut
 174
 175 1;