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handle_upload.php
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handle_upload.php
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<?php
/****************************************
Example of how to use this uploader class...
You can uncomment the following lines (minus the require) to use these as your defaults.
*/
// list of valid extensions, ex. array("jpeg", "xml", "bmp")
$allowedExtensions = array();
// max file size in bytes
$sizeLimit = 80 * 1024 * 1024;
if (isset($_GET['type']))
{
$type = $_GET['type'];
}
require('api.php');
$uploader = new qqFileUploader($allowedExtensions, $sizeLimit);
// Call handleUpload() with the name of the folder, relative to PHP's getcwd()
$result = $uploader->handleUpload('uploads/');
// If this is a file, let's upload it
if (file_exists($result))
{
send_file($result, $type);
$result = array('success'=>true);
}
// to pass data through iframe you will need to encode all html tags
echo htmlspecialchars(json_encode($result), ENT_NOQUOTES);
/******************************************/
/**
* Interactions with API handled here
*
* @param $file_path
*/
function send_file($file_path, $type)
{
$payload = array();
$full_file_path = realpath($file_path);
if (file_exists($full_file_path))
{
$file_path_parts = pathinfo($full_file_path);
$payload['name'] = $file_path_parts['filename'];
$payload['file-name'] = $file_path_parts['basename'];
$file_contents = file_get_contents($full_file_path);
$payload['file-data'] = base64_encode($file_contents);
}
// Loads creds from cookie
$cred_array = array(
"username" => $_COOKIE['username'],
"password" => $_COOKIE['password']
);
$api = new API_Thingy($cred_array);
$api->post($type, $payload);
}
/**
* Handle file uploads via XMLHttpRequest
*/
class qqUploadedFileXhr {
/**
* Save the file to the specified path
* @return boolean TRUE on success
*/
function save($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;
private $uploadName;
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;
}
}
public function getUploadName(){
if( isset( $this->uploadName ) )
return $this->uploadName;
}
public function getName(){
if ($this->file)
return $this->file->getName();
}
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)){
$worky = mkdir($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']; // hide notices if extension is empty
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 . '.');
}
$ext = ($ext == '') ? $ext : '.' . $ext;
if(!$replaceOldFile){
/// don't overwrite previous files that were uploaded
while (file_exists($uploadDirectory . $filename . $ext)) {
$filename .= rand(10, 99);
}
}
$this->uploadName = $filename . $ext;
if ($this->file->save($uploadDirectory . $filename . $ext)){
return $uploadDirectory . $filename . $ext;
} else {
return array('error'=> 'Could not save uploaded file.' .
'The upload was cancelled, or server error encountered');
}
}
}