qcminecraft/Carbon-Forum-F

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library/Uploader.class.php

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F
3 days
Test Coverage
<?php
/**
 * Created by JetBrains PhpStorm.
 * User: taoqili
 * Date: 12-7-18
 * Time: 上午11: 32
 * UEditor编辑器通用上传类
 * Modified By Lin Canbin.
 */
class Uploader
{
    private $DB; //数据库PDO对象
    private $CurUserName; //当前用户名
    private $fileField; //文件域名
    private $file; //文件上传对象
    private $base64; //文件上传对象
    private $config; //配置信息
    private $oriName; //原始文件名
    private $fileName; //新文件名
    private $fullName; //完整文件名,相对网站根目录的相对路径
    private $filePath; //完整文件名,绝对路径
    private $fileSize; //文件大小
    private $fileType; //文件后缀
    private $fileLongType; //文件类型
    private $fileMD5; //文件MD5
    private $fileSHA1; //文件SHA1
    private $stateInfo; //上传状态信息,
    private $stateMap = array( //上传状态映射表,国际化用户需考虑此处数据的国际化
        "SUCCESS", //上传成功标记,在UEditor中内不可改变,否则flash判断会出错
        "文件大小超出 upload_max_filesize 限制",
        "文件大小超出 MAX_FILE_SIZE 限制",
        "文件未被完整上传",
        "没有文件被上传",
        "上传文件为空",
        "ERROR_TMP_FILE" => "临时文件错误",
        "ERROR_TMP_FILE_NOT_FOUND" => "找不到临时文件",
        "ERROR_SIZE_EXCEED" => "文件大小超出网站限制",
        "ERROR_TYPE_NOT_ALLOWED" => "文件类型不允许",
        "ERROR_CREATE_DIR" => "目录创建失败",
        "ERROR_DIR_NOT_WRITEABLE" => "目录没有写权限",
        "ERROR_FILE_MOVE" => "文件保存时出错",
        "ERROR_FILE_NOT_FOUND" => "找不到上传文件",
        "ERROR_WRITE_CONTENT" => "写入文件内容错误",
        "ERROR_UNKNOWN" => "未知错误",
        "ERROR_DEAD_LINK" => "链接不可用",
        "ERROR_HTTP_LINK" => "链接不是http链接",
        "ERROR_HTTP_CONTENTTYPE" => "链接contentType不正确",
        "INVALID_URL" => "非法 URL",
        "INVALID_IP" => "非法 IP"
    );    
    /**
     * 构造函数
     * @param string $fileField 表单名称
     * @param array $config 配置项
     * @param bool $base64 是否解析base64编码,可省略。若开启,则$fileField代表的是base64编码的字符串表单名
     */
    public function __construct($fileField, $config, $type, $CurUserName, $DB = '')
    {
        $this->fileField   = $fileField;
        $this->config      = $config;
        $this->type        = $type;
        $this->CurUserName = $CurUserName;
        $this->DB          = $DB;
        if ($type == "remote") {
            $this->saveRemote();
        } else if ($type == "base64") {
            $this->upBase64();
        } else {
            $this->upFile();
        }
        
        //$this->stateMap['ERROR_TYPE_NOT_ALLOWED'] = iconv('unicode', 'utf-8', $this->stateMap['ERROR_TYPE_NOT_ALLOWED']);
    }
    
    /**
     * 上传文件的主处理方法
     * @return mixed
     */
    private function upFile()
    {
        $file = $this->file = $_FILES[$this->fileField];
        if (!$file) {
            $this->stateInfo = $this->getStateInfo("ERROR_FILE_NOT_FOUND");
            return;
        }
        if ($this->file['error']) {
            $this->stateInfo = $this->getStateInfo($file['error']);
            return;
        } else if (!file_exists($file['tmp_name'])) {
            $this->stateInfo = $this->getStateInfo("ERROR_TMP_FILE_NOT_FOUND");
            return;
        } else if (!is_uploaded_file($file['tmp_name'])) {
            $this->stateInfo = $this->getStateInfo("ERROR_TMPFILE");
            return;
        }
        
        $this->oriName      = $file['name'];
        $this->fileSize     = $file['size'];
        $this->fileLongType = $file['type'];
        $this->fileType     = $this->getFileExt();
        $this->fullName     = $this->getFullName();
        $this->filePath     = $this->getFilePath();
        $this->fileName     = $this->getFileName();
        $dirname            = dirname($this->filePath);
        
        //排重
        if (!$this->checkIdenticalFiles($file['tmp_name'], 'file')) {
            return;
        }
        
        //检查文件大小是否超出限制
        if (!$this->checkSize()) {
            $this->stateInfo = $this->getStateInfo("ERROR_SIZE_EXCEED");
            return;
        }
        
        //检查是否不允许的文件格式
        if (!$this->checkType()) {
            $this->stateInfo = $this->getStateInfo("ERROR_TYPE_NOT_ALLOWED");
            return;
        }
        
        //创建目录失败
        if (!file_exists($dirname) && !mkdir($dirname, 0777, true)) {
            $this->stateInfo = $this->getStateInfo("ERROR_CREATE_DIR");
            return;
        } else if (!is_writeable($dirname)) {
            $this->stateInfo = $this->getStateInfo("ERROR_DIR_NOT_WRITEABLE");
            return;
        }
        
        //移动文件
        if (!(move_uploaded_file($file["tmp_name"], $this->filePath) && file_exists($this->filePath))) { //移动失败
            $this->stateInfo = $this->getStateInfo("ERROR_FILE_MOVE");
        } else { //移动成功
            $this->stateInfo = $this->stateMap[0];
            //往数据库中插入数据
            $this->insertData();
        }
    }
    
    /**
     * 处理base64编码的图片(涂鸦)上传
     * @return mixed
     */
    private function upBase64()
    {
        $base64Data = $_POST[$this->fileField];
        $img        = base64_decode($base64Data);
        
        $this->oriName      = $this->config['oriName'];
        $this->fileSize     = strlen($img);
        $this->fileType     = $this->getFileExt();
        $this->fileLongType = 'image/png';
        $this->fullName     = $this->getFullName();
        $this->filePath     = $this->getFilePath();
        $this->fileName     = $this->getFileName();
        $dirname            = dirname($this->filePath);
        
        //检查文件大小是否超出限制
        if (!$this->checkSize()) {
            $this->stateInfo = $this->getStateInfo("ERROR_SIZE_EXCEED");
            return;
        }
        
        //创建目录失败
        if (!file_exists($dirname) && !mkdir($dirname, 0777, true)) {
            $this->stateInfo = $this->getStateInfo("ERROR_CREATE_DIR");
            return;
        } else if (!is_writeable($dirname)) {
            $this->stateInfo = $this->getStateInfo("ERROR_DIR_NOT_WRITEABLE");
            return;
        }
        
        //移动文件
        if (!(file_put_contents($this->filePath, $img) && file_exists($this->filePath))) { //移动失败
            $this->stateInfo = $this->getStateInfo("ERROR_WRITE_CONTENT");
        } else { //移动成功
            $this->stateInfo = $this->stateMap[0];
            //往数据库中插入数据
            $this->insertData();
        }
        
    }
    
    /**
     * 拉取远程图片
     * @return mixed
     */
    private function saveRemote()
    {
        $imgUrl = htmlspecialchars($this->fileField);
        $imgUrl = str_replace("&amp;", "&", $imgUrl);
        
        //http开头验证
        if (strpos($imgUrl, "http") !== 0) {
            $this->stateInfo = $this->getStateInfo("ERROR_HTTP_LINK");
            return;
        }
        preg_match('/(^https*:\/\/[^:\/]+)/', $imgUrl, $matches);
        $host_with_protocol = count($matches) > 1 ? $matches[1] : '';

        // 判断是否是合法 url
        if (!filter_var($host_with_protocol, FILTER_VALIDATE_URL)) {
            $this->stateInfo = $this->getStateInfo("INVALID_URL");
            return;
        }

        preg_match('/^https*:\/\/(.+)/', $host_with_protocol, $matches);
        $host_without_protocol = count($matches) > 1 ? $matches[1] : '';

        // 此时提取出来的可能是 ip 也有可能是域名,先获取 ip
        $ip = gethostbyname($host_without_protocol);
        // 判断是否是私有 ip
        if(!filter_var($ip, FILTER_VALIDATE_IP, FILTER_FLAG_NO_PRIV_RANGE)) {
            $this->stateInfo = $this->getStateInfo("INVALID_IP");
            return;
        }

        //获取请求头并检测死链
        $heads = get_headers($imgUrl, 1);
        if (!(stristr($heads[0], "200") && stristr($heads[0], "OK"))) {
            $this->stateInfo = $this->getStateInfo("ERROR_DEAD_LINK");
            return;
        }
        //格式验证(扩展名验证和Content-Type验证)
        $fileType = strtolower(strrchr($imgUrl, '.'));
        if (!in_array($fileType, $this->config['allowFiles']) || !isset($heads['Content-Type']) || !stristr($heads['Content-Type'], "image")) {
            $this->stateInfo = $this->getStateInfo("ERROR_HTTP_CONTENTTYPE");
            return;
        }
        
        //打开输出缓冲区并获取远程图片
        ob_start();
        $context = stream_context_create(array(
            'http' => array(
                'follow_location' => false // don't follow redirects
            )
        ));
        readfile($imgUrl, false, $context);
        $img = ob_get_contents();
        ob_end_clean();
        preg_match("/[\/]([^\/]*)[\.]?[^\.\/]*$/", $imgUrl, $m);
        
        $this->oriName      = $m ? $m[1] : "";
        $this->fileSize     = strlen($img);
        $this->fileType     = $this->getFileExt();
        $this->fileLongType = 'image/png';
        $this->fullName     = $this->getFullName();
        $this->filePath     = $this->getFilePath();
        $this->fileName     = $this->getFileName();
        $dirname            = dirname($this->filePath);
        
        //排重
        if (!$this->checkIdenticalFiles($img, 'string')) {
            return;
        }
        
        //检查文件大小是否超出限制
        if (!$this->checkSize()) {
            $this->stateInfo = $this->getStateInfo("ERROR_SIZE_EXCEED");
            return;
        }
        
        //创建目录失败
        if (!file_exists($dirname) && !mkdir($dirname, 0777, true)) {
            $this->stateInfo = $this->getStateInfo("ERROR_CREATE_DIR");
            return;
        } else if (!is_writeable($dirname)) {
            $this->stateInfo = $this->getStateInfo("ERROR_DIR_NOT_WRITEABLE");
            return;
        }
        
        //移动文件
        if (!(file_put_contents($this->filePath, $img) && file_exists($this->filePath))) { //移动失败
            $this->stateInfo = $this->getStateInfo("ERROR_WRITE_CONTENT");
        } else { //移动成功
            $this->stateInfo = $this->stateMap[0];
            //往数据库中插入数据
            $this->insertData();
        }
    }
    /**
     * 排除重复文件
     */
    private function checkIdenticalFiles($tempFileName, $inputType)
    {
        if ($this->DB) {
            if ($inputType == 'string') {
                $this->fileMD5  = md5($tempFileName);
                $this->fileSHA1 = sha1($tempFileName);
            } else {
                $this->fileMD5  = md5_file($tempFileName);
                $this->fileSHA1 = sha1_file($tempFileName);
            }
            $duplicateFiles = $this->DB->query('SELECT UserName, FilePath, PostID FROM ' . PREFIX . 'upload 
                WHERE 
                    FileSize = ? AND 
                    MD5 = ? AND 
                    SHA1 = ?', array(
                $this->fileSize,
                $this->fileMD5,
                $this->fileSHA1
            ));
            if ($duplicateFiles) {
                $this->fullName = $duplicateFiles[0]['FilePath'];
                $this->filePath = $this->getFilePath();
                $isInsertData = true;
                foreach ($duplicateFiles as $file) {
                    if ($file['UserName'] == $this->CurUserName && $file['PostID'] == 0) {
                        $isInsertData = false;
                        break;
                    }
                }
                if ($isInsertData) {
                    $this->insertData();
                }
                $this->stateInfo = $this->stateMap[0];
                return false;
            } else {
                return true;
            }
        } else {
            return true;
        }
    }
    
    /**
     * 往数据库中插入数据
     */
    private function insertData()
    {
        if ($this->DB) {
            $this->DB->query('INSERT INTO ' . PREFIX . 'upload(`ID`, `UserName`, `FileName`, `FileSize`, `FileType`, `SHA1`, `MD5`, `FilePath`, `Description`, `Category`, `Class`, `PostID`, `Created`) VALUES(:ID, :UserName, :FileName, :FileSize, :FileType, :SHA1, :MD5, :FilePath, :Description, :Category, :Class, :PostID, :Created)', array(
                'ID' => Null,
                'UserName' => $this->CurUserName,
                'FileName' => htmlspecialchars($this->oriName),
                'FileSize' => $this->fileSize,
                'FileType' => $this->fileLongType,
                'SHA1' => $this->fileSHA1,
                'MD5' => $this->fileMD5,
                'FilePath' => $this->fullName,
                'Description' => '',
                'Category' => '',
                'Class' => 'Forum',
                'PostID' => 0,
                'Created' => time()
            ));
        }
    }
    
    /**
     * 上传错误检查
     * @param $errCode
     * @return string
     */
    private function getStateInfo($errCode)
    {
        return !$this->stateMap[$errCode] ? $this->stateMap["ERROR_UNKNOWN"] : $this->stateMap[$errCode];
    }
    
    /**
     * 获取文件扩展名
     * @return string
     */
    private function getFileExt()
    {
        return strtolower(strrchr($this->oriName, '.'));
    }
    
    /**
     * 重命名文件
     * @return string
     */
    private function getFullName()
    {
        //替换日期事件
        $t      = time();
        $d      = explode('-', date("Y-y-m-d-H-i-s"));
        $format = $this->config["pathFormat"];
        $format = str_replace("{yyyy}", $d[0], $format);
        $format = str_replace("{yy}", $d[1], $format);
        $format = str_replace("{mm}", $d[2], $format);
        $format = str_replace("{dd}", $d[3], $format);
        $format = str_replace("{hh}", $d[4], $format);
        $format = str_replace("{ii}", $d[5], $format);
        $format = str_replace("{ss}", $d[6], $format);
        $format = str_replace("{time}", $t, $format);
        
        //过滤文件名的非法字符,并替换文件名
        $oriName = substr($this->oriName, 0, strrpos($this->oriName, '.'));
        $oriName = preg_replace("/[\|\?\"\<\>\/\*\\\\]+/", '', $oriName);
        $format  = str_replace("{filename}", $oriName, $format);
        
        //替换随机字符串
        $randNum = mt_rand(1, 10000000000) . mt_rand(1, 10000000000);
        if (preg_match("/\{rand\:([\d]*)\}/i", $format, $matches)) {
            $format = preg_replace("/\{rand\:[\d]*\}/i", substr($randNum, 0, $matches[1]), $format);
        }

        if($this->fileType){
            $ext = $this->fileType;
        } else {
            $ext = $this->getFileExt();
        }
        return $format . $ext;
    }
    
    /**
     * 获取文件名
     * @return string
     */
    private function getFileName()
    {
        return substr($this->filePath, strrpos($this->filePath, '/') + 1);
    }
    
    /**
     * 获取文件完整路径
     * @return string
     */
    private function getFilePath()
    {
        $fullname = $this->fullName;
        $rootPath = $_SERVER['DOCUMENT_ROOT'];
        
        if (substr($fullname, 0, 1) != '/') {
            $fullname = '/' . $fullname;
        }
        
        return $rootPath . $fullname;
    }
    
    /**
     * 文件类型检测
     * @return bool
     */
    private function checkType()
    {
        return in_array($this->getFileExt(), $this->config["allowFiles"]);
    }
    
    /**
     * 文件大小检测
     * @return bool
     */
    private function checkSize()
    {
        return $this->fileSize <= ($this->config["maxSize"]);
    }
    
    /**
     * 获取当前上传成功文件的各项信息
     * @return array
     */
    public function getFileInfo()
    {
        return array(
            "state" => $this->stateInfo,
            "url" => $this->fullName,
            "title" => $this->fileName,
            "original" => $this->oriName,
            "type" => $this->fileType,
            "size" => $this->fileSize
        );
    }
    
}