/usr/share/php/Horde/Mime/Headers/ContentId.php is in php-horde-mime 2.10.3-1ubuntu1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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/**
* Copyright 2015-2017 Horde LLC (http://www.horde.org/)
*
* See the enclosed file COPYING for license information (LGPL). If you
* did not receive this file, see http://www.horde.org/licenses/lgpl21.
*
* @category Horde
* @copyright 2015-2017 Horde LLC
* @license http://www.horde.org/licenses/lgpl21 LGPL 2.1
* @package Mime
*/
/**
* This class represents the Content-ID header value (RFC 2045 [7]).
*
* @author Michael Slusarz <slusarz@horde.org>
* @category Horde
* @copyright 2015-2017 Horde LLC
* @license http://www.horde.org/licenses/lgpl21 LGPL 2.1
* @package Mime
* @since 2.8.0
*/
class Horde_Mime_Headers_ContentId
extends Horde_Mime_Headers_Element_Single
implements Horde_Mime_Headers_Extension_Mime
{
/**
* Creates a Content-ID header conforming to RFC 2045 [7].
*
* @return Horde_Mime_Headers_ContentId Content-ID header object.
*/
public static function create()
{
return new self(
null,
strval(new Horde_Support_Randomid()) . '@' . gethostname()
);
}
/**
*/
public function __construct($name, $value)
{
parent::__construct('Content-ID', $value);
}
/**
*/
protected function _setValue($value)
{
parent::_setValue($value);
$val = $this->value;
$cid = '<' . ltrim(rtrim($val, '>'), '<') . '>';
if ($cid !== $val) {
parent::_setValue($cid);
}
}
/**
*/
public static function getHandles()
{
return array(
'content-id'
);
}
}
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