<?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
*/
class Uploader
{
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,即从当前配置目录开始的URL
private $filePath; //完整文件名,即从当前配置目录开始的URL
private $fileSize; //文件大小
private $fileType; //文件类型
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"
);
/**
* 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 = "upload")
{
$this->fileField = $fileField;
$this->config = $config;
$this->type = $type;
if ($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->fileType = $this->getFileExt();
$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 = $this->getStateInfo("ERROR_SIZE_EXCEED");
return;
}
//检查是否不允许的文件格式
if (!$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];
}
}
/**
* 处理base64编码的图片上传
* @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->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];
}
}
/**
* 拉取远程图片
* @return mixed
*/
private function saveRemote()
{
$imgUrl = htmlspecialchars($this->fileField);
$imgUrl = str_replace("&", "&", $imgUrl);
//http开头验证
if (strpos($imgUrl, "http") !== 0) {
$this->stateInfo = $this->getStateInfo("ERROR_HTTP_LINK");
return;
}
//获取请求头并检测死链
$heads = get_headers($imgUrl);
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, $this->config['allowFiles']) || stristr($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->fullName = $this->getFullName();
$this->filePath = $this->getFilePath();
$this->fileName = $this->getFileName();
$dirname = dirname($this->filePath);
//检查文件大小是否超�
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