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479 lines
12 KiB
479 lines
12 KiB
<?php
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// +----------------------------------------------------------------------
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// | ThinkPHP [ WE CAN DO IT JUST THINK ]
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// +----------------------------------------------------------------------
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// | Copyright (c) 2006~2018 http://thinkphp.cn All rights reserved.
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// +----------------------------------------------------------------------
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// | Licensed ( http://www.apache.org/licenses/LICENSE-2.0 )
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// +----------------------------------------------------------------------
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// | Author: liu21st <liu21st@gmail.com>
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// +----------------------------------------------------------------------
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namespace think;
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use SplFileObject;
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class File extends SplFileObject
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{
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/**
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* @var string 错误信息
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*/
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private $error = '';
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/**
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* @var string 当前完整文件名
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*/
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protected $filename;
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/**
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* @var string 上传文件名
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*/
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protected $saveName;
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/**
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* @var string 文件上传命名规则
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*/
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protected $rule = 'date';
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/**
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* @var array 文件上传验证规则
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*/
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protected $validate = [];
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/**
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* @var bool 单元测试
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*/
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protected $isTest;
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/**
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* @var array 上传文件信息
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*/
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protected $info;
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/**
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* @var array 文件 hash 信息
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*/
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protected $hash = [];
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/**
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* File constructor.
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* @access public
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* @param string $filename 文件名称
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* @param string $mode 访问模式
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*/
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public function __construct($filename, $mode = 'r')
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{
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parent::__construct($filename, $mode);
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$this->filename = $this->getRealPath() ?: $this->getPathname();
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}
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/**
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* 设置是否是单元测试
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* @access public
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* @param bool $test 是否是测试
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* @return $this
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*/
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public function isTest($test = false)
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{
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$this->isTest = $test;
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return $this;
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}
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/**
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* 设置上传信息
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* @access public
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* @param array $info 上传文件信息
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* @return $this
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*/
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public function setUploadInfo($info)
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{
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$this->info = $info;
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return $this;
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}
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/**
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* 获取上传文件的信息
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* @access public
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* @param string $name 信息名称
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* @return array|string
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*/
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public function getInfo($name = '')
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{
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return isset($this->info[$name]) ? $this->info[$name] : $this->info;
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}
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/**
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* 获取上传文件的文件名
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* @access public
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* @return string
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*/
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public function getSaveName()
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{
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return $this->saveName;
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}
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/**
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* 设置上传文件的保存文件名
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* @access public
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* @param string $saveName 保存名称
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* @return $this
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*/
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public function setSaveName($saveName)
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{
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$this->saveName = $saveName;
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return $this;
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}
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/**
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* 获取文件的哈希散列值
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* @access public
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* @param string $type 类型
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* @return string
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*/
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public function hash($type = 'sha1')
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{
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if (!isset($this->hash[$type])) {
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$this->hash[$type] = hash_file($type, $this->filename);
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}
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return $this->hash[$type];
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}
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/**
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* 检查目录是否可写
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* @access protected
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* @param string $path 目录
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* @return boolean
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*/
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protected function checkPath($path)
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{
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if (is_dir($path) || mkdir($path, 0755, true)) {
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return true;
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}
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$this->error = ['directory {:path} creation failed', ['path' => $path]];
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return false;
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}
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/**
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* 获取文件类型信息
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* @access public
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* @return string
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*/
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public function getMime()
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{
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$finfo = finfo_open(FILEINFO_MIME_TYPE);
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return finfo_file($finfo, $this->filename);
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}
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/**
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* 设置文件的命名规则
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* @access public
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* @param string $rule 文件命名规则
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* @return $this
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*/
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public function rule($rule)
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{
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$this->rule = $rule;
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return $this;
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}
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/**
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* 设置上传文件的验证规则
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* @access public
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* @param array $rule 验证规则
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* @return $this
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*/
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public function validate(array $rule = [])
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{
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$this->validate = $rule;
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return $this;
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}
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/**
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* 检测是否合法的上传文件
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* @access public
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* @return bool
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*/
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public function isValid()
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{
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return $this->isTest ? is_file($this->filename) : is_uploaded_file($this->filename);
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}
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/**
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* 检测上传文件
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* @access public
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* @param array $rule 验证规则
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* @return bool
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*/
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public function check($rule = [])
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{
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$rule = $rule ?: $this->validate;
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/* 检查文件大小 */
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if (isset($rule['size']) && !$this->checkSize($rule['size'])) {
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$this->error = 'filesize not match';
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return false;
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}
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/* 检查文件 Mime 类型 */
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if (isset($rule['type']) && !$this->checkMime($rule['type'])) {
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$this->error = 'mimetype to upload is not allowed';
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return false;
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}
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/* 检查文件后缀 */
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if (isset($rule['ext']) && !$this->checkExt($rule['ext'])) {
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$this->error = 'extensions to upload is not allowed';
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return false;
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}
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/* 检查图像文件 */
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if (!$this->checkImg()) {
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$this->error = 'illegal image files';
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return false;
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}
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return true;
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}
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/**
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* 检测上传文件后缀
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* @access public
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* @param array|string $ext 允许后缀
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* @return bool
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*/
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public function checkExt($ext)
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{
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if (is_string($ext)) {
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$ext = explode(',', $ext);
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}
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$extension = strtolower(pathinfo($this->getInfo('name'), PATHINFO_EXTENSION));
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return in_array($extension, $ext);
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}
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/**
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* 检测图像文件
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* @access public
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* @return bool
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*/
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public function checkImg()
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{
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$extension = strtolower(pathinfo($this->getInfo('name'), PATHINFO_EXTENSION));
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// 如果上传的不是图片，或者是图片而且后缀确实符合图片类型则返回 true
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return !in_array($extension, ['gif', 'jpg', 'jpeg', 'bmp', 'png', 'swf']) || in_array($this->getImageType($this->filename), [1, 2, 3, 4, 6, 13]);
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}
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/**
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* 判断图像类型
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* @access protected
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* @param string $image 图片名称
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* @return bool|int
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*/
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protected function getImageType($image)
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{
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if (function_exists('exif_imagetype')) {
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return exif_imagetype($image);
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}
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try {
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$info = getimagesize($image);
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return $info ? $info[2] : false;
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} catch (\Exception $e) {
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return false;
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}
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}
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/**
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* 检测上传文件大小
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* @access public
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* @param integer $size 最大大小
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* @return bool
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*/
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public function checkSize($size)
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{
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return $this->getSize() <= $size;
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}
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/**
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* 检测上传文件类型
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* @access public
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* @param array|string $mime 允许类型
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* @return bool
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*/
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public function checkMime($mime)
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{
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$mime = is_string($mime) ? explode(',', $mime) : $mime;
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return in_array(strtolower($this->getMime()), $mime);
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}
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/**
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* 移动文件
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* @access public
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* @param string $path 保存路径
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* @param string|bool $savename 保存的文件名 默认自动生成
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* @param boolean $replace 同名文件是否覆盖
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* @return false|File
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*/
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public function move($path, $savename = true, $replace = true)
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{
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// 文件上传失败，捕获错误代码
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if (!empty($this->info['error'])) {
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$this->error($this->info['error']);
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return false;
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}
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// 检测合法性
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if (!$this->isValid()) {
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$this->error = 'upload illegal files';
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return false;
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}
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// 验证上传
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if (!$this->check()) {
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return false;
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}
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$path = rtrim($path, DS) . DS;
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// 文件保存命名规则
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$saveName = $this->buildSaveName($savename);
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$filename = $path . $saveName;
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// 检测目录
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if (false === $this->checkPath(dirname($filename))) {
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return false;
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}
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// 不覆盖同名文件
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if (!$replace && is_file($filename)) {
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$this->error = ['has the same filename: {:filename}', ['filename' => $filename]];
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return false;
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}
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/* 移动文件 */
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if ($this->isTest) {
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rename($this->filename, $filename);
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} elseif (!move_uploaded_file($this->filename, $filename)) {
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$this->error = 'upload write error';
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return false;
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}
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// 返回 File 对象实例
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$file = new self($filename);
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$file->setSaveName($saveName)->setUploadInfo($this->info);
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return $file;
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}
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/**
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* 获取保存文件名
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* @access protected
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* @param string|bool $savename 保存的文件名 默认自动生成
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* @return string
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*/
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protected function buildSaveName($savename)
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{
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// 自动生成文件名
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if (true === $savename) {
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if ($this->rule instanceof \Closure) {
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$savename = call_user_func_array($this->rule, [$this]);
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} else {
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switch ($this->rule) {
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case 'date':
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$savename = date('Ymd') . DS . md5(microtime(true));
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break;
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default:
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if (in_array($this->rule, hash_algos())) {
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$hash = $this->hash($this->rule);
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$savename = substr($hash, 0, 2) . DS . substr($hash, 2);
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} elseif (is_callable($this->rule)) {
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$savename = call_user_func($this->rule);
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} else {
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$savename = date('Ymd') . DS . md5(microtime(true));
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}
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}
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}
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} elseif ('' === $savename || false === $savename) {
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$savename = $this->getInfo('name');
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}
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if (!strpos($savename, '.')) {
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$savename .= '.' . pathinfo($this->getInfo('name'), PATHINFO_EXTENSION);
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}
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return $savename;
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}
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/**
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* 获取错误代码信息
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* @access private
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* @param int $errorNo 错误号
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* @return $this
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*/
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private function error($errorNo)
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{
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switch ($errorNo) {
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case 1:
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case 2:
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$this->error = 'upload File size exceeds the maximum value';
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break;
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case 3:
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$this->error = 'only the portion of file is uploaded';
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break;
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case 4:
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$this->error = 'no file to uploaded';
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break;
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case 6:
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$this->error = 'upload temp dir not found';
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break;
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case 7:
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$this->error = 'file write error';
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break;
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default:
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$this->error = 'unknown upload error';
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}
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return $this;
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}
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/**
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* 获取错误信息（支持多语言）
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* @access public
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* @return string
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*/
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public function getError()
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{
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if (is_array($this->error)) {
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list($msg, $vars) = $this->error;
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} else {
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$msg = $this->error;
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$vars = [];
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}
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return Lang::has($msg) ? Lang::get($msg, $vars) : $msg;
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}
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/**
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* 魔法方法，获取文件的 hash 值
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* @access public
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* @param string $method 方法名
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* @param mixed $args 调用参数
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* @return string
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*/
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public function __call($method, $args)
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{
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return $this->hash($method);
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}
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}
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