292 lines
7.9 KiB
PHP
292 lines
7.9 KiB
PHP
<?php
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/**
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* Zend Framework
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*
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* LICENSE
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*
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* This source file is subject to the new BSD license that is bundled
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* with this package in the file LICENSE.txt.
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* It is also available through the world-wide-web at this URL:
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* http://framework.zend.com/license/new-bsd
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* If you did not receive a copy of the license and are unable to
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* obtain it through the world-wide-web, please send an email
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* to license@zend.com so we can send you a copy immediately.
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*
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* @category Zend
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* @package Zend_Validate
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* @copyright Copyright (c) 2005-2009 Zend Technologies USA Inc. (http://www.zend.com)
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* @license http://framework.zend.com/license/new-bsd New BSD License
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* @version $Id: MimeType.php 17203 2009-07-27 19:37:18Z thomas $
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*/
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/**
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* @see Zend_Validate_Abstract
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*/
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require_once 'Zend/Validate/Abstract.php';
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/**
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* Validator for the mime type of a file
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*
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* @category Zend
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* @package Zend_Validate
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* @copyright Copyright (c) 2005-2009 Zend Technologies USA Inc. (http://www.zend.com)
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* @license http://framework.zend.com/license/new-bsd New BSD License
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*/
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class Zend_Validate_File_MimeType extends Zend_Validate_Abstract
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{
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/**#@+
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* @const Error type constants
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*/
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const FALSE_TYPE = 'fileMimeTypeFalse';
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const NOT_DETECTED = 'fileMimeTypeNotDetected';
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const NOT_READABLE = 'fileMimeTypeNotReadable';
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/**#@-*/
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/**
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* @var array Error message templates
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*/
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protected $_messageTemplates = array(
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self::FALSE_TYPE => "The file '%value%' has a false mimetype of '%type%'",
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self::NOT_DETECTED => "The mimetype of file '%value%' could not been detected",
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self::NOT_READABLE => "The file '%value%' can not be read"
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);
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/**
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* @var array
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*/
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protected $_messageVariables = array(
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'type' => '_type'
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);
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/**
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* @var string
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*/
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protected $_type;
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/**
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* Mimetypes
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*
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* If null, there is no mimetype
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*
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* @var string|null
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*/
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protected $_mimetype;
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/**
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* Magicfile to use
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*
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* @var string|null
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*/
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protected $_magicfile;
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/**
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* Sets validator options
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*
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* Mimetype to accept
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*
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* @param string|array $mimetype MimeType
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* @return void
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*/
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public function __construct($mimetype)
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{
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if ($mimetype instanceof Zend_Config) {
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$mimetype = $mimetype->toArray();
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} elseif (is_string($mimetype)) {
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$mimetype = explode(',', $mimetype);
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} elseif (!is_array($mimetype)) {
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require_once 'Zend/Validate/Exception.php';
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throw new Zend_Validate_Exception("Invalid options to validator provided");
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}
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if (isset($mimetype['magicfile'])) {
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$this->setMagicFile($mimetype['magicfile']);
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}
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$this->setMimeType($mimetype);
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}
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/**
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* Returna the actual set magicfile
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*
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* @return string
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*/
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public function getMagicFile()
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{
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return $this->_magicfile;
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}
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/**
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* Sets the magicfile to use
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* if null, the MAGIC constant from php is used
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*
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* @param string $file
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* @return Zend_Validate_File_MimeType Provides fluid interface
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*/
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public function setMagicFile($file)
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{
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if (empty($file)) {
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$this->_magicfile = null;
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} else if (!is_readable($file)) {
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require_once 'Zend/Validate/Exception.php';
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throw new Zend_Validate_Exception('The given magicfile can not be read');
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} else {
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$this->_magicfile = (string) $file;
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}
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return $this;
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}
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/**
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* Returns the set mimetypes
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*
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* @param boolean $asArray Returns the values as array, when false an concated string is returned
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* @return string|array
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*/
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public function getMimeType($asArray = false)
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{
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$asArray = (bool) $asArray;
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$mimetype = (string) $this->_mimetype;
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if ($asArray) {
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$mimetype = explode(',', $mimetype);
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}
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return $mimetype;
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}
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/**
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* Sets the mimetypes
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*
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* @param string|array $mimetype The mimetypes to validate
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* @return Zend_Validate_File_Extension Provides a fluent interface
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*/
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public function setMimeType($mimetype)
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{
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$this->_mimetype = null;
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$this->addMimeType($mimetype);
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return $this;
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}
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/**
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* Adds the mimetypes
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*
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* @param string|array $mimetype The mimetypes to add for validation
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* @return Zend_Validate_File_Extension Provides a fluent interface
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*/
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public function addMimeType($mimetype)
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{
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$mimetypes = $this->getMimeType(true);
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if (is_string($mimetype)) {
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$mimetype = explode(',', $mimetype);
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} elseif (!is_array($mimetype)) {
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require_once 'Zend/Validate/Exception.php';
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throw new Zend_Validate_Exception("Invalid options to validator provided");
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}
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if (isset($mimetype['magicfile'])) {
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unset($mimetype['magicfile']);
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}
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foreach ($mimetype as $content) {
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if (empty($content) || !is_string($content)) {
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continue;
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}
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$mimetypes[] = trim($content);
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}
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$mimetypes = array_unique($mimetypes);
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// Sanity check to ensure no empty values
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foreach ($mimetypes as $key => $mt) {
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if (empty($mt)) {
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unset($mimetypes[$key]);
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}
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}
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$this->_mimetype = implode(',', $mimetypes);
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return $this;
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}
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/**
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* Defined by Zend_Validate_Interface
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*
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* Returns true if the mimetype of the file matches the given ones. Also parts
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* of mimetypes can be checked. If you give for example "image" all image
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* mime types will be accepted like "image/gif", "image/jpeg" and so on.
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*
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* @param string $value Real file to check for mimetype
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* @param array $file File data from Zend_File_Transfer
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* @return boolean
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*/
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public function isValid($value, $file = null)
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{
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// Is file readable ?
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require_once 'Zend/Loader.php';
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if (!Zend_Loader::isReadable($value)) {
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return $this->_throw($file, self::NOT_READABLE);
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}
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if ($file !== null) {
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$mimefile = $this->getMagicFile();
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if (class_exists('finfo', false)) {
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$const = defined('FILEINFO_MIME_TYPE') ? FILEINFO_MIME_TYPE : FILEINFO_MIME;
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if (!empty($mimefile)) {
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$mime = new finfo($const, $mimefile);
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} else {
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$mime = new finfo($const);
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}
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if ($mime !== false) {
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$this->_type = $mime->file($value);
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}
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unset($mime);
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}
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if (empty($this->_type)) {
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if (function_exists('mime_content_type') && ini_get('mime_magic.magicfile')) {
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$this->_type = mime_content_type($value);
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} else {
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$this->_type = $file['type'];
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}
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}
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}
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if (empty($this->_type)) {
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return $this->_throw($file, self::NOT_DETECTED);
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}
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$mimetype = $this->getMimeType(true);
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if (in_array($this->_type, $mimetype)) {
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return true;
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}
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$types = explode('/', $this->_type);
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$types = array_merge($types, explode('-', $this->_type));
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foreach($mimetype as $mime) {
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if (in_array($mime, $types)) {
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return true;
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}
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}
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return $this->_throw($file, self::FALSE_TYPE);
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}
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/**
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* Throws an error of the given type
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*
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* @param string $file
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* @param string $errorType
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* @return false
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*/
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protected function _throw($file, $errorType)
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{
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if ($file !== null) {
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$this->_value = $file['name'];
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}
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$this->_error($errorType);
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return false;
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}
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}
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