bludit/bl-kernel/ajax/upload-images.php

92 lines
2.6 KiB
PHP

<?php defined('BLUDIT') or die('Bludit CMS.');
header('Content-Type: application/json');
/*
| Upload an image to a particular page
|
| @_POST['uuid'] string Page uuid
|
| @return array
*/
// $_POST
// ----------------------------------------------------------------------------
$uuid = empty($_POST['uuid']) ? false : $_POST['uuid'];
// ----------------------------------------------------------------------------
// Check path traversal on $uuid
if ($uuid) {
if (Text::stringContains($uuid, DS, false)) {
$message = 'Path traversal detected.';
Log::set($message, LOG_TYPE_ERROR);
ajaxResponse(1, $message);
}
}
// Set upload directory
if ($uuid && IMAGE_RESTRICT) {
$imageDirectory = PATH_UPLOADS_PAGES.$uuid.DS;
$thumbnailDirectory = $imageDirectory.'thumbnails'.DS;
if (!Filesystem::directoryExists($thumbnailDirectory)) {
Filesystem::mkdir($thumbnailDirectory, true);
}
} else {
$imageDirectory = PATH_UPLOADS;
$thumbnailDirectory = PATH_UPLOADS_THUMBNAILS;
}
$images = array();
foreach ($_FILES['images']['name'] as $uuid=>$filename) {
// Check for errors
if ($_FILES['images']['error'][$uuid] != 0) {
$message = $L->g('Maximum load file size allowed:').' '.ini_get('upload_max_filesize');
Log::set($message, LOG_TYPE_ERROR);
ajaxResponse(1, $message);
}
// Convert URL characters such as spaces or quotes to characters
$filename = urldecode($filename);
// Check path traversal on $filename
if (Text::stringContains($filename, DS, false)) {
$message = 'Path traversal detected.';
Log::set($message, LOG_TYPE_ERROR);
ajaxResponse(1, $message);
}
// Check file extension
$fileExtension = Filesystem::extension($filename);
$fileExtension = Text::lowercase($fileExtension);
if (!in_array($fileExtension, $GLOBALS['ALLOWED_IMG_EXTENSION']) ) {
$message = $L->g('File type is not supported. Allowed types:').' '.implode(', ',$GLOBALS['ALLOWED_IMG_EXTENSION']);
Log::set($message, LOG_TYPE_ERROR);
ajaxResponse(1, $message);
}
// Move from PHP tmp file to Bludit tmp directory
Filesystem::mv($_FILES['images']['tmp_name'][$uuid], PATH_TMP.$filename);
// Transform the image and generate the thumbnail
$image = transformImage(PATH_TMP.$filename, $imageDirectory, $thumbnailDirectory);
// Delete temporary file
if (file_exists(PATH_TMP.$filename)) {
Filesystem::rmfile(PATH_TMP.$filename);
}
if ($image) {
chmod($image, 0644);
$filename = Filesystem::filename($image);
array_push($images, $filename);
} else {
$message = 'Error after transformImage() function.';
Log::set($message, LOG_TYPE_ERROR);
ajaxResponse(1, $message);
}
}
ajaxResponse(0, 'Images uploaded.', array(
'images'=>$images
));
?>