Files
Cloudreve/application/index/model/LocalAdapter.php
T
2019-03-05 19:28:55 +08:00

392 lines
12 KiB
PHP

<?php
namespace app\index\model;
use think\Model;
use think\Db;
use \app\index\model\Option;
/**
* 本地策略文件管理适配器
*/
class LocalAdapter extends Model{
private $fileModel;
private $policyModel;
private $userModel;
public function __construct($file,$policy,$user){
$this->fileModel = $file;
$this->policyModel = $policy;
$this->userModel = $user;
}
/**
* 获取文本文件内容
*
* @return string 内容
*/
public function getFileContent(){
$filePath = ROOT_PATH . 'public/uploads/' . $this->fileModel["pre_name"];
$fileObj = fopen($filePath,"r");
$fileContent = fread($fileObj,filesize($filePath)+1);
return $fileContent;
}
/**
* 保存可编辑文件
*
* @param string $content 要保存的文件内容
* @return void
*/
public function saveContent($content){
$filePath = ROOT_PATH . 'public/uploads/' . $this->fileModel["pre_name"];
file_put_contents($filePath, "");
file_put_contents($filePath, $content);
}
/**
* 输出预览文件
*
* @param boolean $isAdmin 是否为管理员请求
* @return mixed 文件数据
*/
public function Preview($isAdmin = false){
$speedLimit = Db::name('groups')->where('id',$this->userModel["user_group"])->find();
$rangeTransfer = $speedLimit["range_transfer"];
$speedLimit = $speedLimit["speed"];
$sendFileOptions = Option::getValues(["download"]);
if($sendFileOptions["sendfile"] == "1" && !empty($sendFileOptions)){
$this->sendFile($speedLimit,$rangeTransfer,false,$sendFileOptions["header"]);
}else{
if($isAdmin){
$speedLimit="";
}
if($speedLimit == "0"){
exit();
}else if(empty($speedLimit)){
header("Cache-Control: max-age=10800");
$this->outputWithoutLimit(false,$rangeTransfer);
exit();
}else if((int)$speedLimit > 0){
header("Cache-Control: max-age=10800");
$this->outputWithLimit($speedLimit);
}
}
}
/**
* 使用Sendfile模式发送文件数据
*
* @param int $speed 下载限速
* @param boolean $range 是否支持断点续传
* @param boolean $download 是否为下载请求
* @param string $header Sendfile Header
* @return void
*/
private function sendFile($speed,$range,$download=false,$header="X-Sendfile"){
$filePath = ROOT_PATH . 'public/uploads/' . $this->fileModel["pre_name"];
$realPath = ROOT_PATH . 'public/uploads/' . $this->fileModel["pre_name"];
if($header == "X-Accel-Redirect"){
$filePath = '/public/uploads/' . $this->fileModel["pre_name"];
}
if($download){
$filePath = str_replace("\\","/",$filePath);
if($header == "X-Accel-Redirect"){
ob_flush();
flush();
echo "s";
}
//保证如下顺序,否则最终浏览器中得到的content-type为'text/html'
//1,写入 X-Sendfile 头信息
$pathToFile = str_replace('%2F', '/', rawurlencode($filePath));
header($header.": ".$pathToFile);
//2,写入Content-Type头信息
$mime_type = self::getMimetypeOnly($realPath);
header('Content-Type: '.$mime_type);
//3,写入正确的附件文件名头信息
$orign_fname = $this->fileModel["orign_name"];
$ua = $_SERVER["HTTP_USER_AGENT"]; // 处理不同浏览器的兼容性
if (preg_match("/Firefox/", $ua)) {
$encoded_filename = rawurlencode($orign_fname);
header("Content-Disposition: attachment; filename*=\"utf8''" . $encoded_filename . '"');
} else if (preg_match("/MSIE/", $ua) || preg_match("/Edge/", $ua) || preg_match("/rv:/", $ua)) {
$encoded_filename = rawurlencode($orign_fname);
header('Content-Disposition: attachment; filename="' . $encoded_filename . '"');
} else {
// for Chrome,Safari etc.
header('Content-Disposition: attachment;filename="'. $orign_fname .'";filename*=utf-8'."''". $orign_fname);
}
exit;
}else{
$filePath = str_replace("\\","/",$filePath);
header('Content-Type: '.self::getMimetype($realPath));
if($header == "X-Accel-Redirect"){
ob_flush();
flush();
echo "s";
}
header($header.": ".str_replace('%2F', '/', rawurlencode($filePath)));
ob_flush();
flush();
}
}
/**
* 无限速发送文件数据
*
* @param boolean $download 是否为下载
* @param boolean $reload 是否支持断点续传
* @return void
*/
public function outputWithoutLimit($download = false,$reload = false){
ignore_user_abort(false);
$filePath = ROOT_PATH . 'public/uploads/' . $this->fileModel["pre_name"];
set_time_limit(0);
session_write_close();
$file_size = filesize($filePath);
$ranges = $this->getRange($file_size);
if($reload == 1 && $ranges!=null){
header('HTTP/1.1 206 Partial Content');
header('Accept-Ranges:bytes');
header(sprintf('content-length:%u',$ranges['end']-$ranges['start']));
header(sprintf('content-range:bytes %s-%s/%s', $ranges['start'], $ranges['end']-1, $file_size));
}
if($download){
header('Cache-control: private');
header('Content-Type: application/octet-stream');
header('Content-Length: '.filesize($filePath));
$encoded_fname = rawurlencode($this->fileModel["orign_name"]);
header('Content-Disposition: attachment;filename="'.$encoded_fname.'";filename*=utf-8'."''".$encoded_fname);
ob_flush();
flush();
}
if(file_exists($filePath)){
if(!$download){
header('Content-Type: '.self::getMimetype($filePath));
ob_flush();
flush();
}
$fileObj = fopen($filePath,"rb");
if($reload == 1){
fseek($fileObj, sprintf('%u', $ranges['start']));
}
while(!feof($fileObj)){
echo fread($fileObj,10240);
ob_flush();
flush();
}
fclose($fileObj);
}
}
/**
* 有限速发送文件数据
*
* @param int $speed 最大速度
* @param boolean $download 是否为下载请求
* @return void
*/
public function outputWithLimit($speed,$download = false){
ignore_user_abort(false);
$filePath = ROOT_PATH . 'public/uploads/' . $this->fileModel["pre_name"];
set_time_limit(0);
session_write_close();
if($download){
header('Cache-control: private');
header('Content-Type: application/octet-stream');
header('Content-Length: '.filesize($filePath));
$encoded_fname = rawurlencode($this->fileModel["orign_name"]);
header('Content-Disposition: attachment;filename="'.$encoded_fname.'";filename*=utf-8'."''".$encoded_fname);
ob_flush();
flush();
}else{
header('Content-Type: '.self::getMimetype($filePath));
ob_flush();
flush();
}
if(file_exists($filePath)){
$fileObj = fopen($filePath,"r");
while (!feof($fileObj)){
echo fread($fileObj,round($speed*1024));
ob_flush();
flush();
sleep(1);
}
fclose($fileObj);
}
}
/**
* 获取文件MIME Type
*
* @param string $path 文件路径
* @return void
*/
static function getMimetype($path){
//FILEINFO_MIME will output something like "image/jpeg; charset=binary"
$finfoObj = finfo_open(FILEINFO_MIME);
$mimetype = finfo_file($finfoObj, $path);
finfo_close($finfoObj);
return $mimetype;
}
/**
* 获取文件MIME Type
*
* @param string $path 文件路径
* @return void
*/
static function getMimetypeOnly($path){
//FILEINFO_MIME_TYPE will output something like "image/jpeg"
$finfoObj = finfo_open(FILEINFO_MIME_TYPE);
$mimetype = finfo_file($finfoObj, $path);
finfo_close($finfoObj);
return $mimetype;
}
/**
* 获取断点续传时HTTP_RANGE头
*
* @param int $file_size 文件大小
* @return void
*/
private function getRange($file_size){
if(isset($_SERVER['HTTP_RANGE']) && !empty($_SERVER['HTTP_RANGE'])){
$range = $_SERVER['HTTP_RANGE'];
$range = preg_replace('/[\s|,].*/', '', $range);
$range = explode('-', substr($range, 6));
if(count($range)<2){
$range[1] = $file_size;
}
$range = array_combine(array('start','end'), $range);
if(empty($range['start'])){
$range['start'] = 0;
}
if(empty($range['end'])){
$range['end'] = $file_size;
}
return $range;
}
return null;
}
/**
* 生成/返回 文件缩略图
*
* @return array 重定向信息
*/
public function getThumb(){
$picInfo = explode(",",$this->fileModel["pic_info"]);
$picInfo = self::getThumbSize($picInfo[0],$picInfo[1]);
if(file_exists(ROOT_PATH . "public/thumb/".$this->fileModel["pre_name"]."_thumb")){
self::outputThumb(ROOT_PATH . "public/thumb/".$this->fileModel["pre_name"]."_thumb");
return [0,0];
}
$thumbImg = new Thumb(ROOT_PATH . "public/uploads/".$this->fileModel["pre_name"]);
$thumbImg->thumb($picInfo[1], $picInfo[0]);
if(!is_dir(dirname(ROOT_PATH . "public/thumb/".$this->fileModel["pre_name"]))){
mkdir(dirname(ROOT_PATH . "public/thumb/".$this->fileModel["pre_name"]),0777,true);
}
$thumbImg->out(ROOT_PATH . "public/thumb/".$this->fileModel["pre_name"]."_thumb");
self::outputThumb(ROOT_PATH . "public/thumb/".$this->fileModel["pre_name"]."_thumb");
return [0,0];
}
/**
* 计算缩略图大小
*
* @param int $width 原始宽
* @param int $height 原始高
* @return array
*/
static function getThumbSize($width,$height){
// $rate = $width/$height;
// $maxWidth = 280;
// $maxHeight = 150;
// $changeWidth = 150*$rate;
// $changeHeight = 280/$rate;
// if($changeWidth>=$maxWidth){
// return [(int)$changeHeight,280];
// }
return [230,200];
}
/**
* 输出缩略图
*
* @param string $path 缩略图文件路径
* @return void
*/
static function outputThumb($path){
ob_end_clean();
if(!input("get.cache")=="no"){
header("Cache-Control: max-age=10800");
}
header('Content-Type: '.self::getMimetype($path));
$fileObj = fopen($path,"r");
echo fread($fileObj,filesize($path));
fclose($file);
}
/**
* 处理下载请求
*
* @param boolean $isAdmin 是否为管理员请求
* @return void
*/
public function Download($isAdmin=false){
$speedLimit = Db::name('groups')->where('id',$this->userModel["user_group"])->find();
$rangeTransfer = $speedLimit["range_transfer"];
$speedLimit = $speedLimit["speed"];
$sendFileOptions = Option::getValues(["download"]);
if($sendFileOptions["sendfile"] == "1"){
$this->sendFile($speedLimit,$rangeTransfer,true,$sendFileOptions["header"]);
}else{
if($isAdmin){
$speedLimit = "";
}
if($speedLimit == "0"){
exit();
}else if(empty($speedLimit)){
$this->outputWithoutLimit(true,$rangeTransfer);
exit();
}else if((int)$speedLimit > 0){
$this->outputWithLimit($speedLimit,true);
}
}
}
/**
* 删除指定本地文件
*
* @param array $fileList 待删除文件的数据库记录
* @param array $policyData 待删除文件的上传策略信息
* @return void
*/
static function DeleteFile($fileList,$policyData){
$fileListTemp = array_column($fileList, 'pre_name');
foreach ($fileListTemp as $key => $value) {
@unlink(ROOT_PATH . 'public/uploads/'.$value);
if(file_exists(ROOT_PATH . 'public/thumb/'.$value."_thumb")){
@unlink(ROOT_PATH . 'public/thumb/'.$value."_thumb");
}
}
}
/**
* 签名临时直链,用于Office365预览
*
* @return array
*/
public function signTmpUrl(){
$options = Option::getValues(["oss","basic"]);
$timeOut = $options["timeout"];
$delayTime = time()+$timeOut;
$key=$this->fileModel["id"].":".$delayTime.":".md5($this->userModel["user_pass"].$this->fileModel["id"].$delayTime.config("salt"));
return [1,$options['siteURL']."Callback/TmpPreview/key/".$key];
}
}
?>