<?php
/**
* Zend Framework (http://framework.zend.com/)
*
* @link http://github.com/zendframework/zf2 for the canonical source repository
* @copyright Copyright (c) 2005-2014 Zend Technologies USA Inc. (http://www.zend.com)
* @license http://framework.zend.com/license/new-bsd New BSD License
*/
namespace Zend\Filter\File;
use Zend\Filter;
use Zend\Filter\Exception;
/**
* Encrypts a given file and stores the encrypted file content
*/
class Encrypt extends Filter\Encrypt
{
/**
* New filename to set
*
* @var string
*/
protected $filename;
/**
* Returns the new filename where the content will be stored
*
* @return string
*/
public function getFilename()
{
return $this->filename;
}
/**
* Sets the new filename where the content will be stored
*
* @param string $filename (Optional) New filename to set
* @return self
*/
public function setFilename($filename = null)
{
$this->filename = $filename;
return $this;
}
/**
* Defined by Zend\Filter\Filter
*
* Encrypts the file $value with the defined settings
*
* @param string|array $value Full path of file to change or $_FILES data array
* @return string|array The filename which has been set, or false when there were errors
* @throws Exception\InvalidArgumentException
* @throws Exception\RuntimeException
*/
public function filter($value)
{
// An uploaded file? Retrieve the 'tmp_name'
$isFileUpload = (is_array($value) && isset($value['tmp_name']));
if ($isFileUpload) {
$uploadData = $value;
$value = $value['tmp_name'];
}
if (!file_exists($value)) {
throw new Exception\InvalidArgumentException("File '$value' not found");
}
if (!isset($this->filename)) {
$this->filename = $value;
}
if (file_exists($this->filename) and !is_writable($this->filename)) {
throw new Exception\RuntimeException("File '{$this->filename}' is not writable");
}
$content = file_get_contents($value);
if (!$content) {
throw new Exception\RuntimeException("Problem while reading file '$value'");
}
$encrypted = parent::filter($content);
$result = file_put_contents($this->filename, $encrypted);
if (!$result) {
throw new Exception\RuntimeException("Problem while writing file '{$this->filename}'");
}
if ($isFileUpload) {
$uploadData['tmp_name'] = $this->filename;
return $uploadData;
}
return $this->filename;
}
}