addon repository relocated

[friendica-addons.git] / js_upload / file-uploader / server / php.php

diff --git a/js_upload/file-uploader/server/php.php b/js_upload/file-uploader/server/php.php
new file mode 100644 (file)
index 0000000..915c86c
--- /dev/null
+++ b/js_upload/file-uploader/server/php.php
@@ -0,0 +1,162 @@
+<?php
+
+/**
+ * Handle file uploads via XMLHttpRequest
+ */
+class qqUploadedFileXhr {
+    /**
+     * Save the file to the specified path
+     * @return boolean TRUE on success
+     */
+    function save($path) {    
+        $input = fopen("php://input", "r");
+        $temp = tmpfile();
+        $realSize = stream_copy_to_stream($input, $temp);
+        fclose($input);
+        
+        if ($realSize != $this->getSize()){            
+            return false;
+        }
+        
+        $target = fopen($path, "w");        
+        fseek($temp, 0, SEEK_SET);
+        stream_copy_to_stream($temp, $target);
+        fclose($target);
+        
+        return true;
+    }
+    function getName() {
+        return $_GET['qqfile'];
+    }
+    function getSize() {
+        if (isset($_SERVER["CONTENT_LENGTH"])){
+            return (int)$_SERVER["CONTENT_LENGTH"];            
+        } else {
+            throw new Exception('Getting content length is not supported.');
+        }      
+    }   
+}
+
+/**
+ * Handle file uploads via regular form post (uses the $_FILES array)
+ */
+class qqUploadedFileForm {  
+    /**
+     * Save the file to the specified path
+     * @return boolean TRUE on success
+     */
+    function save($path) {
+        if(!move_uploaded_file($_FILES['qqfile']['tmp_name'], $path)){
+            return false;
+        }
+        return true;
+    }
+    function getName() {
+        return $_FILES['qqfile']['name'];
+    }
+    function getSize() {
+        return $_FILES['qqfile']['size'];
+    }
+}
+
+class qqFileUploader {
+    private $allowedExtensions = array();
+    private $sizeLimit = 10485760;
+    private $file;
+
+    function __construct(array $allowedExtensions = array(), $sizeLimit = 10485760){        
+        $allowedExtensions = array_map("strtolower", $allowedExtensions);
+            
+        $this->allowedExtensions = $allowedExtensions;        
+        $this->sizeLimit = $sizeLimit;
+        
+        $this->checkServerSettings();       
+
+        if (isset($_GET['qqfile'])) {
+            $this->file = new qqUploadedFileXhr();
+        } elseif (isset($_FILES['qqfile'])) {
+            $this->file = new qqUploadedFileForm();
+        } else {
+            $this->file = false; 
+        }
+    }
+    
+    private function checkServerSettings(){        
+        $postSize = $this->toBytes(ini_get('post_max_size'));
+        $uploadSize = $this->toBytes(ini_get('upload_max_filesize'));        
+        
+        if ($postSize < $this->sizeLimit || $uploadSize < $this->sizeLimit){
+            $size = max(1, $this->sizeLimit / 1024 / 1024) . 'M';             
+            die("{'error':'increase post_max_size and upload_max_filesize to $size'}");    
+        }        
+    }
+    
+    private function toBytes($str){
+        $val = trim($str);
+        $last = strtolower($str[strlen($str)-1]);
+        switch($last) {
+            case 'g': $val *= 1024;
+            case 'm': $val *= 1024;
+            case 'k': $val *= 1024;        
+        }
+        return $val;
+    }
+    
+    /**
+     * Returns array('success'=>true) or array('error'=>'error message')
+     */
+    function handleUpload($uploadDirectory, $replaceOldFile = FALSE){
+        if (!is_writable($uploadDirectory)){
+            return array('error' => "Server error. Upload directory isn't writable.");
+        }
+        
+        if (!$this->file){
+            return array('error' => 'No files were uploaded.');
+        }
+        
+        $size = $this->file->getSize();
+        
+        if ($size == 0) {
+            return array('error' => 'File is empty');
+        }
+        
+        if ($size > $this->sizeLimit) {
+            return array('error' => 'File is too large');
+        }
+        
+        $pathinfo = pathinfo($this->file->getName());
+        $filename = $pathinfo['filename'];
+        //$filename = md5(uniqid());
+        $ext = $pathinfo['extension'];
+
+        if($this->allowedExtensions && !in_array(strtolower($ext), $this->allowedExtensions)){
+            $these = implode(', ', $this->allowedExtensions);
+            return array('error' => 'File has an invalid extension, it should be one of '. $these . '.');
+        }
+        
+        if(!$replaceOldFile){
+            /// don't overwrite previous files that were uploaded
+            while (file_exists($uploadDirectory . $filename . '.' . $ext)) {
+                $filename .= rand(10, 99);
+            }
+        }
+        
+        if ($this->file->save($uploadDirectory . $filename . '.' . $ext)){
+            return array('success'=>true);
+        } else {
+            return array('error'=> 'Could not save uploaded file.' .
+                'The upload was cancelled, or server error encountered');
+        }
+        
+    }    
+}
+
+// list of valid extensions, ex. array("jpeg", "xml", "bmp")
+$allowedExtensions = array();
+// max file size in bytes
+$sizeLimit = 10 * 1024 * 1024;
+
+$uploader = new qqFileUploader($allowedExtensions, $sizeLimit);
+$result = $uploader->handleUpload('uploads/');
+// to pass data through iframe you will need to encode all html tags
+echo htmlspecialchars(json_encode($result), ENT_NOQUOTES);