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<?php
/**
* The MIME_Viewer_rar class renders out the contents of .rar archives in HTML
* format.
*
* $Horde: framework/MIME/MIME/Viewer/rar.php,v 1.18.10.9 2006/01/01 21:28:25 jan Exp $
*
* Copyright 1999-2006 Anil Madhavapeddy <anil@recoil.org>
* Copyright 2002-2006 Michael Cochrane <mike@graftonhall.co.nz>
*
* See the enclosed file COPYING for license information (LGPL). If you
* did not receive this file, see http://www.fsf.org/copyleft/lgpl.html.
*
* @author Anil Madhavapeddy <anil@recoil.org>
* @author Michael Cochrane <mike@graftonhall.co.nz>
* @since Horde 1.3
* @package Horde_MIME_Viewer
*/
class MIME_Viewer_rar extends MIME_Viewer {
/**
* Rar compression methods.
*
* @var array
*/
var $_methods = array(
0x30 => 'Store',
0x31 => 'Fastest',
0x32 => 'Fast',
0x33 => 'Normal',
0x34 => 'Good',
0x35 => 'Best'
);
/**
* Render out the currently set contents using rar.
*
* @param array $params Any parameters the Viewer may need.
*
* @return string The rendered contents.
*/
function render($params = array())
{
$contents = $this->mime_part->getContents();
/* Make sure this is a valid rar file. */
if ($this->checkRarData($contents) === false) {
return '<pre>' . _("This does not appear to be a valid rar archive.") . '</pre>';
}
require_once 'Horde/Text.php';
$rarData = $this->getRarData($contents);
$fileCount = count($rarData);
$text = '<strong>' . htmlspecialchars(sprintf(_("Contents of \"%s\""), $this->mime_part->getName())) . ':</strong>' . "\n";
$text .= '<table><tr><td align="left"><tt><span class="fixed">';
$text .= Text::htmlAllSpaces(_("Archive Name") . ': ' . $this->mime_part->getName()) . "\n";
$text .= Text::htmlAllSpaces(_("Archive File Size") . ': ' . strlen($contents) . ' bytes') . "\n";
$text .= Text::htmlAllSpaces(($fileCount != 1) ? sprintf(_("File Count: %s files"), $fileCount) : sprintf(_("File Count: %s file"), $fileCount));
$text .= "\n\n";
$text .= Text::htmlAllSpaces(
str_pad(_("File Name"), 50, ' ', STR_PAD_RIGHT) .
str_pad(_("Attributes"), 10, ' ', STR_PAD_LEFT) .
str_pad(_("Size"), 10, ' ', STR_PAD_LEFT) .
str_pad(_("Modified Date"), 19, ' ', STR_PAD_LEFT) .
str_pad(_("Method"), 10, ' ', STR_PAD_LEFT) .
str_pad(_("Ratio"), 7, ' ', STR_PAD_LEFT)
) . "\n";
$text .= str_repeat('-', 106) . "\n";
foreach ($rarData as $val) {
$ratio = (empty($val['size'])) ? 0 : 100 * ($val['csize'] / $val['size']);
$text .= Text::htmlAllSpaces(
str_pad($val['name'], 50, ' ', STR_PAD_RIGHT) .
str_pad($val['attr'], 10, ' ', STR_PAD_LEFT) .
str_pad($val['size'], 10, ' ', STR_PAD_LEFT) .
str_pad(strftime("%d-%b-%Y %H:%M", $val['date']), 19, ' ', STR_PAD_LEFT) .
str_pad($val['method'], 10, ' ', STR_PAD_LEFT) .
str_pad(sprintf("%1.1f%%", $ratio), 7, ' ', STR_PAD_LEFT)
) . "\n";
}
$text .= str_repeat('-', 106) . "\n";
$text .= '</span></tt></td></tr></table>';
return nl2br($text);
}
/**
* Returns the MIME type of this part.
*
* @return string The MIME type of this part.
*/
function getType()
{
return 'text/html; charset=' . NLS::getCharset();
}
/**
* Checks to see if the data is a valid Rar archive.
*
* @param string &$data The rar archive data.
*
* @return boolean True if valid, false if invalid.
*/
function checkRarData(&$data)
{
$fileHeader = "\x52\x61\x72\x21\x1a\x07\x00";
if (strpos($data, $fileHeader) === false) {
return false;
} else {
return true;
}
}
/**
* Get the list of files/data from the rar archive.
*
* @param string &$data The rar archive data.
*
* @return array KEY: Position in RAR archive
* VALUES: 'attr' -- File attributes
* 'date' -- File modification time
* 'csize' -- Compressed file size
* 'method' -- Compression method
* 'name' -- Filename
* 'size' -- Original file size
*/
function getRarData(&$data)
{
$return_array = array();
$blockStart = strpos($data, "\x52\x61\x72\x21\x1a\x07\x00");
$position = $blockStart + 7;
while ($position < strlen($data)) {
$head_crc = substr($data, $position + 0, 2);
$head_type = ord(substr($data, $position + 2, 1));
$head_flags = unpack('vFlags', substr($data, $position + 3, 2));
$head_flags = $head_flags['Flags'];
$head_size = unpack('vSize', substr($data, $position + 5, 2));
$head_size = $head_size['Size'];
$position += 7;
$head_size -= 7;
switch ($head_type) {
case 0x73:
/* Archive header */
$position += $head_size;
break;
case 0x74:
$file = array();
/* File Header */
$info = unpack('VPacked/VUnpacked/COS/VCRC32/VTime/CVersion/CMethod/vLength/vAttrib', substr($data, $position));
$file['name'] = substr($data, $position + 25, $info['Length']);
$file['size'] = $info['Unpacked'];
$file['csize'] = $info['Packed'];
$file['date'] = mktime((($info['Time'] >> 11) & 0x1f),
(($info['Time'] >> 5) & 0x3f),
(($info['Time'] << 1) & 0x3e),
(($info['Time'] >> 21) & 0x07),
(($info['Time'] >> 16) & 0x1f),
((($info['Time'] >> 25) & 0x7f) + 80));
$file['method'] = $this->_methods[$info['Method']];
$file['attr'] = '';
$file['attr'] .= ($info['Attrib'] & 0x10) ? 'D' : '-';
$file['attr'] .= ($info['Attrib'] & 0x20) ? 'A' : '-';
$file['attr'] .= ($info['Attrib'] & 0x03) ? 'S' : '-';
$file['attr'] .= ($info['Attrib'] & 0x02) ? 'H' : '-';
$file['attr'] .= ($info['Attrib'] & 0x01) ? 'R' : '-';
$return_array[] = $file;
$position += $head_size;
$position += $info['Packed'];
break;
default:
$position += $head_size;
if (isset($add_size)) {
$position += $add_size;
}
break;
}
}
return $return_array;
}
}
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