namespace kucha\ueditor;

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 $fileField 表单名称

* @param $config 配置项

* @param string $type 是否解析base64编码，可省略。若开启，则$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, 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, $this->config['allowFiles']) || stristr($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];

}

}

/**

* 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);

//过滤文件名的非法自负,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, 1000000000) . mt_rand(1, 1000000000);

if (preg_match("/\{rand\:([\d]*)\}/i", $format, $matches)) {

$format = preg_replace("/\{rand\:[\d]*\}/i", substr($randNum, 0, $matches[1]), $format);

}

$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;

if (substr($fullname, 0, 1) != '/') {

$fullname = '/' . $fullname;

}

return $this->config['pathRoot'] . $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

);

}

}

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