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rnicholusrnicholus
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php traditional code has moved
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‎php/traditional/handler.php

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<?php
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/**
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* Do not use or reference this directly from your client-side code.
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* Instead, this should be required via the endpoint.php or endpoint-cors.php
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* file(s).
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*/
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class UploadHandler {
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public $allowedExtensions = array();
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public $sizeLimit = null;
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public $inputName = 'qqfile';
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public $chunksFolder = 'chunks';
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public $chunksCleanupProbability = 0.001; // Once in 1000 requests on avg
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public $chunksExpireIn = 604800; // One week
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protected $uploadName;
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function __construct(){
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$this->sizeLimit = $this->toBytes(ini_get('upload_max_filesize'));
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}
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/**
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* Get the original filename
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*/
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public function getName(){
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if (isset($_REQUEST['qqfilename']))
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return $_REQUEST['qqfilename'];
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if (isset($_FILES[$this->inputName]))
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return $_FILES[$this->inputName]['name'];
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}
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/**
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* Get the name of the uploaded file
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*/
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public function getUploadName(){
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return $this->uploadName;
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}
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public function combineChunks($uploadDirectory) {
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$uuid = $_POST['qquuid'];
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$name = $this->getName();
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$targetFolder = $this->chunksFolder.DIRECTORY_SEPARATOR.$uuid;
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$totalParts = isset($_REQUEST['qqtotalparts']) ? (int)$_REQUEST['qqtotalparts'] : 1;
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$target = join(DIRECTORY_SEPARATOR, array($uploadDirectory, $uuid, $name));
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$this->uploadName = $name;
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if (!file_exists($target)){
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mkdir(dirname($target));
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}
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$target = fopen($target, 'wb');
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for ($i=0; $i<$totalParts; $i++){
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$chunk = fopen($targetFolder.DIRECTORY_SEPARATOR.$i, "rb");
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stream_copy_to_stream($chunk, $target);
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fclose($chunk);
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}
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// Success
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fclose($target);
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for ($i=0; $i<$totalParts; $i++){
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unlink($targetFolder.DIRECTORY_SEPARATOR.$i);
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}
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rmdir($targetFolder);
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return array("success" => true, "uuid" => $uuid);
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}
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/**
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* Process the upload.
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* @param string $uploadDirectory Target directory.
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* @param string $name Overwrites the name of the file.
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*/
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public function handleUpload($uploadDirectory, $name = null){
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if (is_writable($this->chunksFolder) &&
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1 == mt_rand(1, 1/$this->chunksCleanupProbability)){
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// Run garbage collection
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$this->cleanupChunks();
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}
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// Check that the max upload size specified in class configuration does not
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// exceed size allowed by server config
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if ($this->toBytes(ini_get('post_max_size')) < $this->sizeLimit ||
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$this->toBytes(ini_get('upload_max_filesize')) < $this->sizeLimit){
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$size = max(1, $this->sizeLimit / 1024 / 1024) . 'M';
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return array('error'=>"Server error. Increase post_max_size and upload_max_filesize to ".$size);
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}
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if ($this->isInaccessible($uploadDirectory)){
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return array('error' => "Server error. Uploads directory isn't writable");
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}
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$type = $_SERVER['CONTENT_TYPE'];
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if (isset($_SERVER['HTTP_CONTENT_TYPE'])) {
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$type = $_SERVER['HTTP_CONTENT_TYPE'];
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}
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if(!isset($type)) {
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return array('error' => "No files were uploaded.");
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} else if (strpos(strtolower($type), 'multipart/') !== 0){
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return array('error' => "Server error. Not a multipart request. Please set forceMultipart to default value (true).");
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}
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// Get size and name
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$file = $_FILES[$this->inputName];
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$size = $file['size'];
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if ($name === null){
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$name = $this->getName();
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}
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// Validate name
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if ($name === null || $name === ''){
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return array('error' => 'File name empty.');
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}
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// Validate file size
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if ($size == 0){
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return array('error' => 'File is empty.');
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}
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if ($size > $this->sizeLimit){
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return array('error' => 'File is too large.');
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}
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// Validate file extension
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$pathinfo = pathinfo($name);
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$ext = isset($pathinfo['extension']) ? $pathinfo['extension'] : '';
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if($this->allowedExtensions && !in_array(strtolower($ext), array_map("strtolower", $this->allowedExtensions))){
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$these = implode(', ', $this->allowedExtensions);
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return array('error' => 'File has an invalid extension, it should be one of '. $these . '.');
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}
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// Save a chunk
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$totalParts = isset($_REQUEST['qqtotalparts']) ? (int)$_REQUEST['qqtotalparts'] : 1;
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$uuid = $_REQUEST['qquuid'];
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if ($totalParts > 1){
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# chunked upload
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$chunksFolder = $this->chunksFolder;
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$partIndex = (int)$_REQUEST['qqpartindex'];
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if (!is_writable($chunksFolder) && !is_executable($uploadDirectory)){
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return array('error' => "Server error. Chunks directory isn't writable or executable.");
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}
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$targetFolder = $this->chunksFolder.DIRECTORY_SEPARATOR.$uuid;
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if (!file_exists($targetFolder)){
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mkdir($targetFolder);
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}
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$target = $targetFolder.'/'.$partIndex;
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$success = move_uploaded_file($_FILES[$this->inputName]['tmp_name'], $target);
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return array("success" => true, "uuid" => $uuid);
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}
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else {
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# non-chunked upload
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$target = join(DIRECTORY_SEPARATOR, array($uploadDirectory, $uuid, $name));
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//$target = $this->getUniqueTargetPath($uploadDirectory, $name);
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if ($target){
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$this->uploadName = basename($target);
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if (!is_dir(dirname($target))){
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mkdir(dirname($target));
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}
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if (move_uploaded_file($file['tmp_name'], $target)){
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return array('success'=> true, "uuid" => $uuid);
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}
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}
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return array('error'=> 'Could not save uploaded file.' .
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'The upload was cancelled, or server error encountered');
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}
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}
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/**
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* Process a delete.
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* @param string $uploadDirectory Target directory.
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* @params string $name Overwrites the name of the file.
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*
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*/
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public function handleDelete($uploadDirectory, $name=null)
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{
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if ($this->isInaccessible($uploadDirectory)) {
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return array('error' => "Server error. Uploads directory isn't writable" . ((!$this->isWindows()) ? " or executable." : "."));
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}
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$targetFolder = $uploadDirectory;
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$url = parse_url($_SERVER['REQUEST_URI'], PHP_URL_PATH);
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$tokens = explode('/', $url);
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$uuid = $tokens[sizeof($tokens)-1];
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$target = join(DIRECTORY_SEPARATOR, array($targetFolder, $uuid));
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// print_r($target);
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if (is_dir($target)){
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$this->removeDir($target);
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return array("success" => true, "uuid" => $uuid);
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} else {
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return array("success" => false,
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"error" => "File not found! Unable to delete.".$url,
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"path" => $uuid
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);
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}
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}
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/**
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* Returns a path to use with this upload. Check that the name does not exist,
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* and appends a suffix otherwise.
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* @param string $uploadDirectory Target directory
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* @param string $filename The name of the file to use.
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*/
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protected function getUniqueTargetPath($uploadDirectory, $filename)
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{
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// Allow only one process at the time to get a unique file name, otherwise
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// if multiple people would upload a file with the same name at the same time
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// only the latest would be saved.
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if (function_exists('sem_acquire')){
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$lock = sem_get(ftok(__FILE__, 'u'));
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sem_acquire($lock);
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}
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$pathinfo = pathinfo($filename);
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$base = $pathinfo['filename'];
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$ext = isset($pathinfo['extension']) ? $pathinfo['extension'] : '';
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$ext = $ext == '' ? $ext : '.' . $ext;
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$unique = $base;
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$suffix = 0;
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// Get unique file name for the file, by appending random suffix.
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while (file_exists($uploadDirectory . DIRECTORY_SEPARATOR . $unique . $ext)){
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$suffix += rand(1, 999);
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$unique = $base.'-'.$suffix;
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}
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$result = $uploadDirectory . DIRECTORY_SEPARATOR . $unique . $ext;
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// Create an empty target file
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if (!touch($result)){
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// Failed
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$result = false;
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}
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if (function_exists('sem_acquire')){
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sem_release($lock);
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}
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return $result;
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}
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/**
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* Deletes all file parts in the chunks folder for files uploaded
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* more than chunksExpireIn seconds ago
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*/
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protected function cleanupChunks(){
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foreach (scandir($this->chunksFolder) as $item){
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if ($item == "." || $item == "..")
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continue;
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$path = $this->chunksFolder.DIRECTORY_SEPARATOR.$item;
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if (!is_dir($path))
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continue;
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if (time() - filemtime($path) > $this->chunksExpireIn){
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$this->removeDir($path);
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}
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}
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}
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/**
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* Removes a directory and all files contained inside
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* @param string $dir
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*/
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protected function removeDir($dir){
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foreach (scandir($dir) as $item){
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if ($item == "." || $item == "..")
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continue;
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if (is_dir($item)){
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$this->removeDir($item);
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} else {
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unlink(join(DIRECTORY_SEPARATOR, array($dir, $item)));
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}
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}
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rmdir($dir);
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}
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/**
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* Converts a given size with units to bytes.
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* @param string $str
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*/
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protected function toBytes($str){
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$val = trim($str);
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$last = strtolower($str[strlen($str)-1]);
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switch($last) {
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case 'g': $val *= 1024;
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case 'm': $val *= 1024;
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case 'k': $val *= 1024;
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}
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return $val;
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}
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/**
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* Determines whether a directory can be accessed.
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*
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* is_executable() is not reliable on Windows prior PHP 5.0.0
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* (http://www.php.net/manual/en/function.is-executable.php)
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* The following tests if the current OS is Windows and if so, merely
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* checks if the folder is writable;
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* otherwise, it checks additionally for executable status (like before).
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*
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* @param string $directory The target directory to test access
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*/
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protected function isInaccessible($directory) {
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$isWin = $this->isWindows();
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$folderInaccessible = ($isWin) ? !is_writable($directory) : ( !is_writable($directory) && !is_executable($directory) );
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return $folderInaccessible;
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}
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/**
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* Determines is the OS is Windows or not
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*
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* @return boolean
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*/
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protected function isWindows() {
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$isWin = (strtoupper(substr(PHP_OS, 0, 3)) === 'WIN');
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return $isWin;
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}
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}
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The traditional PHP server example has moved to a new repository: https://github.com/FineUploader/php-traditional-server.
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The server code is also available on packagist via composer under the name "fineuploader/php-traditional-server".

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