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#============================================================= -*-perl-*-
#
# BackupPC::CGI::RestoreFile package
#
# DESCRIPTION
#
# This module implements the RestoreFile action for the CGI interface.
#
# AUTHOR
# Craig Barratt <cbarratt@users.sourceforge.net>
#
# COPYRIGHT
# Copyright (C) 2003-2020 Craig Barratt
#
# This program 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 3 of the License, or
# (at your option) any later version.
#
# This program 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 this program. If not, see <http://www.gnu.org/licenses/>.
#
#========================================================================
#
# Version 4.4.0, released 20 Jun 2020.
#
# See http://backuppc.sourceforge.net.
#
#========================================================================
package BackupPC::CGI::RestoreFile;
use strict;
use BackupPC::CGI::Lib qw(:all);
use BackupPC::XS qw(:all);
use BackupPC::View;
use Encode qw/from_to decode_utf8/;
sub action
{
my $num = $In{num};
my $share = $In{share};
my $dir = $In{dir};
ErrorExit(eval("qq{$Lang->{Invalid_number__num}}"))
if ( $num ne "" && $num !~ /^\d+$/ );
ErrorExit($Lang->{Nice_try__but_you_can_t_put})
if ( $dir =~ m{(^|/)\.\.(/|$)} );
restoreFile($In{host}, $num, $share, $dir);
}
sub restoreFile
{
my($host, $num, $share, $dir, $skipHardLink, $origName) = @_;
my($Privileged) = CheckPermission($host);
#
# Some common content (media) types from www.iana.org (via MIME::Types).
#
my $Ext2ContentType = {
'asc' => 'text/plain',
'avi' => 'video/x-msvideo',
'bmp' => 'image/bmp',
'book' => 'application/x-maker',
'cc' => 'text/plain',
'cpp' => 'text/plain',
'csh' => 'application/x-csh',
'csv' => 'text/comma-separated-values',
'c' => 'text/plain',
'deb' => 'application/x-debian-package',
'doc' => 'application/msword',
'dot' => 'application/msword',
'dtd' => 'text/xml',
'dvi' => 'application/x-dvi',
'eps' => 'application/postscript',
'fb' => 'application/x-maker',
'fbdoc' => 'application/x-maker',
'fm' => 'application/x-maker',
'frame' => 'application/x-maker',
'frm' => 'application/x-maker',
'gif' => 'image/gif',
'gtar' => 'application/x-gtar',
'gz' => 'application/x-gzip',
'hh' => 'text/plain',
'hpp' => 'text/plain',
'h' => 'text/plain',
'html' => 'text/html',
'htmlx' => 'text/html',
'htm' => 'text/html',
'iges' => 'model/iges',
'igs' => 'model/iges',
'jpeg' => 'image/jpeg',
'jpe' => 'image/jpeg',
'jpg' => 'image/jpeg',
'js' => 'application/x-javascript',
'latex' => 'application/x-latex',
'maker' => 'application/x-maker',
'mid' => 'audio/midi',
'midi' => 'audio/midi',
'movie' => 'video/x-sgi-movie',
'mov' => 'video/quicktime',
'mp2' => 'audio/mpeg',
'mp3' => 'audio/mpeg',
'mpeg' => 'video/mpeg',
'mpg' => 'video/mpeg',
'mpp' => 'application/vnd.ms-project',
'pdf' => 'application/pdf',
'pgp' => 'application/pgp-signature',
'php' => 'application/x-httpd-php',
'pht' => 'application/x-httpd-php',
'phtml' => 'application/x-httpd-php',
'png' => 'image/png',
'ppm' => 'image/x-portable-pixmap',
'ppt' => 'application/powerpoint',
'ppt' => 'application/vnd.ms-powerpoint',
'ps' => 'application/postscript',
'qt' => 'video/quicktime',
'rgb' => 'image/x-rgb',
'rtf' => 'application/rtf',
'rtf' => 'text/rtf',
'shar' => 'application/x-shar',
'shtml' => 'text/html',
'swf' => 'application/x-shockwave-flash',
'tex' => 'application/x-tex',
'texi' => 'application/x-texinfo',
'texinfo' => 'application/x-texinfo',
'tgz' => 'application/x-gtar',
'tiff' => 'image/tiff',
'tif' => 'image/tiff',
'txt' => 'text/plain',
'vcf' => 'text/x-vCard',
'vrml' => 'model/vrml',
'wav' => 'audio/x-wav',
'wmls' => 'text/vnd.wap.wmlscript',
'wml' => 'text/vnd.wap.wml',
'wrl' => 'model/vrml',
'xls' => 'application/vnd.ms-excel',
'xml' => 'text/xml',
'xwd' => 'image/x-xwindowdump',
'z' => 'application/x-compress',
'zip' => 'application/zip',
%{$Conf{CgiExt2ContentType}}, # add site-specific values
};
if ( !$Privileged ) {
ErrorExit(eval("qq{$Lang->{Only_privileged_users_can_restore_backup_files2}}"));
}
$bpc->ConfigRead($host);
%Conf = $bpc->Conf();
ServerConnect();
ErrorExit($Lang->{Empty_host_name}) if ( $host eq "" );
$dir = "/" if ( $dir eq "" );
my @Backups = $bpc->BackupInfoRead($host);
my $view = BackupPC::View->new($bpc, $host, \@Backups);
my $a = $view->fileAttrib($num, $share, $dir);
if ( $dir =~ m{(^|/)\.\.(/|$)} || !defined($a) ) {
$dir = decode_utf8($dir);
ErrorExit("Can't restore bad file ${EscHTML($dir)} (${EscHTML($num)}, ${EscHTML($share)})");
}
my $f = BackupPC::XS::FileZIO::open($a->{fullPath}, 0, $a->{compress});
if ( !defined($f) ) {
my $fullPath = decode_utf8($a->{fullPath});
ErrorExit("Unable to open file ${EscHTML($fullPath)} (${EscHTML($num)}, ${EscHTML($share)})");
}
my $data;
if ( !$skipHardLink && $a->{type} == BPC_FTYPE_HARDLINK ) {
#
# hardlinks should look like the file they point to
#
my $linkName;
while ( $f->read(\$data, 65536) > 0 ) {
$linkName .= $data;
}
$f->close;
$linkName =~ s/^\.\///;
restoreFile($host, $num, $share, $linkName, 1, $dir);
return;
}
$bpc->ServerMesg("log User $User recovered file $host/$num:$share/$dir ($a->{fullPath})");
$dir = $origName if ( defined($origName) );
my $ext = $1 if ( $dir =~ /\.([^\/\.]+)$/ );
my $contentType = $Ext2ContentType->{lc($ext)}
|| "application/octet-stream";
my $fileName = $1 if ( $dir =~ /.*\/(.*)/ );
$fileName =~ s/"/\\"/g;
print "Content-Type: $contentType\r\n";
print "Content-Transfer-Encoding: binary\r\n";
if ( $ENV{HTTP_USER_AGENT} =~ /\bmsie\b/i && $ENV{HTTP_USER_AGENT} !~ /\bopera\b/i ) {
#
# Convert to cp1252 for MS IE. TODO: find a way to get IE
# to accept UTF8 encoding. Firefox accepts inline encoding
# using the "=?UTF-8?B?base64?=" format, but IE doesn't.
#
from_to($fileName, "utf8", "cp1252")
if ( $Conf{ClientCharset} ne "" );
}
print "Content-Disposition: attachment; filename=\"$fileName\"\r\n\r\n";
while ( $f->read(\$data, 1024 * 1024) > 0 ) {
print $data;
}
$f->close;
}
1;
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