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Created Mar 23, 2019

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<?php
/*
* jQuery File Upload Plugin PHP Class 8.4.1
* https://github.com/blueimp/jQuery-File-Upload
*
* Copyright 2010, Sebastian Tschan
* https://blueimp.net
*
* Licensed under the MIT license:
* http://www.opensource.org/licenses/MIT
*/
final class UploadHandler {
/**
* @var null|array
*/
private $options;
/**
* @var array
*/
public $response;
// PHP File Upload error message codes:
// http://php.net/manual/en/features.file-upload.errors.php
private $error_messages = [
1 => 'The uploaded file exceeds the upload_max_filesize directive in php.ini',
2 => 'The uploaded file exceeds the MAX_FILE_SIZE directive that was specified in the HTML form',
3 => 'The uploaded file was only partially uploaded',
4 => 'No file was uploaded',
6 => 'Missing a temporary folder',
7 => 'Failed to write file to disk',
8 => 'A PHP extension stopped the file upload',
'post_max_size' => 'The uploaded file exceeds the post_max_size directive in php.ini',
'max_file_size' => 'File is too big',
'min_file_size' => 'File is too small',
'accept_file_types' => 'Filetype not allowed',
'max_number_of_files' => 'Maximum number of files exceeded',
'max_width' => 'Image exceeds maximum width',
'min_width' => 'Image requires a minimum width',
'max_height' => 'Image exceeds maximum height',
'min_height' => 'Image requires a minimum height',
'abort' => 'File upload aborted',
'image_resize' => 'Failed to resize image',
];
/**
* @var array|\Imagick[]|resource[]
*/
private $image_objects = [];
/**
* UploadHandler constructor.
*
* @param null|array $options
* @param bool $initialize
* @param null|string $error_messages
*/
public function __construct($options = null, $initialize = true, $error_messages = null) {
$this->response = [];
$this->options = [
'script_url' => $this->get_full_url() . '/' . basename($this->get_server_var('SCRIPT_NAME')),
'upload_dir' => dirname($this->get_server_var('SCRIPT_FILENAME')) . '/files/',
'upload_url' => $this->get_full_url() . '/files/',
'user_dirs' => false,
'mkdir_mode' => 0755,
'param_name' => 'files',
// Set the following option to 'POST', if your server does not support
// DELETE requests. This is a parameter sent to the client:
'delete_type' => 'DELETE',
'access_control_allow_origin' => '*',
'access_control_allow_credentials' => false,
'access_control_allow_methods' => [
'OPTIONS',
'HEAD',
'GET',
'POST',
'PUT',
'PATCH',
'DELETE',
],
'access_control_allow_headers' => [
'Content-Type',
'Content-Range',
'Content-Disposition',
],
// By default, allow redirects to the referer protocol+host:
'redirect_allow_target' => '/^' . preg_quote(
parse_url($this->get_server_var('HTTP_REFERER'), \PHP_URL_SCHEME)
. '://'
. parse_url($this->get_server_var('HTTP_REFERER'), \PHP_URL_HOST)
. '/', // Trailing slash to not match subdomains by mistake
'/' // preg_quote delimiter param
) . '/',
// Enable to provide file downloads via GET requests to the PHP script:
// 1. Set to 1 to download files via readfile method through PHP
// 2. Set to 2 to send a X-Sendfile header for lighttpd/Apache
// 3. Set to 3 to send a X-Accel-Redirect header for nginx
// If set to 2 or 3, adjust the upload_url option to the base path of
// the redirect parameter, e.g. '/files/'.
'download_via_php' => 1,
// Read files in chunks to avoid memory limits when download_via_php
// is enabled, set to 0 to disable chunked reading of files:
'readfile_chunk_size' => 10 * 1024 * 1024, // 10 MiB
// Defines which files can be displayed inline when downloaded:
'inline_file_types' => '/\.(gif|jpe?g|png)$/i',
// Defines which files (based on their names) are accepted for upload:
'accept_file_types' => '/.+$/i',
// The php.ini settings upload_max_filesize and post_max_size
// take precedence over the following max_file_size setting:
'max_file_size' => null,
'min_file_size' => 1,
// The maximum number of files for the upload directory:
'max_number_of_files' => null,
// Defines which files are handled as image files:
'image_file_types' => '/\.(gif|jpe?g|png)$/i',
// Use exif_imagetype on all files to correct file extensions:
'correct_image_extensions' => false,
// Image resolution restrictions:
'max_width' => null,
'max_height' => null,
'min_width' => 1,
'min_height' => 1,
// Set the following option to false to enable resumable uploads:
'discard_aborted_uploads' => true,
// Set to 0 to use the GD library to scale and orient images,
// set to 1 to use imagick (if installed, falls back to GD),
// set to 2 to use the ImageMagick convert binary directly:
'image_library' => 1,
// Uncomment the following to define an array of resource limits
// for imagick:
/*
'imagick_resource_limits' => array(
imagick::RESOURCETYPE_MAP => 32,
imagick::RESOURCETYPE_MEMORY => 32
),
*/
// Command or path for to the ImageMagick convert binary:
'convert_bin' => 'convert',
// Uncomment the following to add parameters in front of each
// ImageMagick convert call (the limit constraints seem only
// to have an effect if put in front):
/*
'convert_params' => '-limit memory 32MiB -limit map 32MiB',
*/
// Command or path for to the ImageMagick identify binary:
'identify_bin' => 'identify',
'image_versions' => [
// The empty image version key defines options for the original image:
'' => [
// Automatically rotate images based on EXIF meta data:
'auto_orient' => false,
],
// Uncomment the following to create medium sized images:
/*
'medium' => array(
'max_width' => 800,
'max_height' => 600
),
*/
'thumbnail' => [
// Uncomment the following to use a defined directory for the thumbnails
// instead of a subdirectory based on the version identifier.
// Make sure that this directory doesn't allow execution of files if you
// don't pose any restrictions on the type of uploaded files, e.g. by
// copying the .htaccess file from the files directory for Apache:
//'upload_dir' => dirname($this->get_server_var('SCRIPT_FILENAME')).'/thumb/',
//'upload_url' => $this->get_full_url().'/thumb/',
// Uncomment the following to force the max
// dimensions and e.g. create square thumbnails:
//'crop' => true,
'max_width' => 80,
'max_height' => 80,
],
],
'print_response' => false,
];
if ($options) {
$this->options = $options + $this->options;
}
if ($error_messages) {
$this->error_messages = $error_messages + $this->error_messages;
}
if ($initialize) {
$this->initialize();
}
}
/**
* @return void
*/
private function initialize() {
switch ($this->get_server_var('REQUEST_METHOD')) {
case 'OPTIONS':
case 'HEAD':
$this->head();
break;
case 'GET':
$this->get($this->options['print_response']);
break;
case 'PATCH':
case 'PUT':
case 'POST':
$this->post($this->options['print_response']);
break;
case 'DELETE':
$this->delete($this->options['print_response']);
break;
default:
$this->header('HTTP/1.1 405 Method Not Allowed');
}
}
/**
* @return string
*/
private function get_full_url() {
$https =
(
!empty($_SERVER['HTTPS'])
&&
strcasecmp($_SERVER['HTTPS'], 'on') === 0
)
||
(
!empty($_SERVER['HTTP_X_FORWARDED_PROTO'])
&&
strcasecmp($_SERVER['HTTP_X_FORWARDED_PROTO'], 'https') === 0
);
return ($https ? 'https://' : 'http://') .
(!empty($_SERVER['REMOTE_USER']) ? $_SERVER['REMOTE_USER'] . '@' : '') .
($_SERVER['HTTP_HOST'] ?? ($_SERVER['SERVER_NAME'] . ((($https && $_SERVER['SERVER_PORT'] === 443) || $_SERVER['SERVER_PORT'] === 80) ? '' : ':' . $_SERVER['SERVER_PORT']))) .
substr($_SERVER['SCRIPT_NAME'], 0, strrpos($_SERVER['SCRIPT_NAME'], '/'));
}
/**
* @return string
*/
private function get_user_id() {
/* @noinspection PhpUsageOfSilenceOperatorInspection */
@session_start();
return session_id();
}
/**
* @return string
*/
private function get_user_path() {
if ($this->options['user_dirs']) {
return $this->get_user_id() . '/';
}
return '';
}
/**
* @param null|string $file_name
* @param null|string $version
*
* @return string
*/
private function get_upload_path($file_name = null, $version = null) {
$file_name = $file_name ? $file_name : '';
if (empty($version)) {
$version_path = '';
} else {
$version_dir = $this->options['image_versions'][$version]['upload_dir'] ?? '';
if ($version_dir) {
return $version_dir . $this->get_user_path() . $file_name;
}
$version_path = $version . '/';
}
return $this->options['upload_dir'] . $this->get_user_path()
. $version_path . $file_name;
}
/**
* @param string $url
*
* @return string
*/
private function get_query_separator($url) {
return strpos($url, '?') === false ? '?' : '&';
}
/**
* @param string $file_name
* @param null|string $version
* @param bool $direct
*
* @return string
*/
private function get_download_url($file_name, $version = null, $direct = false) {
if (!$direct && $this->options['download_via_php']) {
$url = $this->options['script_url']
. $this->get_query_separator($this->options['script_url'])
. $this->get_singular_param_name()
. '=' . rawurlencode($file_name);
if ($version) {
$url .= '&version=' . rawurlencode($version);
}
return $url . '&download=1';
}
if (empty($version)) {
$version_path = '';
} else {
$version_url = $this->options['image_versions'][$version]['upload_url'] ?? '';
if ($version_url) {
return $version_url . $this->get_user_path() . rawurlencode($file_name);
}
$version_path = rawurlencode($version) . '/';
}
return $this->options['upload_url'] . $this->get_user_path() . $version_path . rawurlencode($file_name);
}
/**
* @param \stdClass $file
*/
private function set_additional_file_properties($file) {
$file->deleteUrl = $this->options['script_url']
. $this->get_query_separator($this->options['script_url'])
. $this->get_singular_param_name()
. '=' . rawurlencode($file->name);
$file->deleteType = $this->options['delete_type'];
if ($file->deleteType !== 'DELETE') {
$file->deleteUrl .= '&_method=DELETE';
}
if ($this->options['access_control_allow_credentials']) {
$file->deleteWithCredentials = true;
}
}
/**
* Fix for overflowing signed 32 bit integers,
* works for sizes up to 2^32-1 bytes (4 GiB - 1):
*
* @param int $size
*
* @return float|int
*/
private function fix_integer_overflow($size) {
if ($size < 0) {
$size += 2.0 * (\PHP_INT_MAX + 1);
}
return $size;
}
/**
* @param string $file_path
* @param bool $clear_stat_cache
*
* @return float
*/
private function get_file_size($file_path, $clear_stat_cache = false) {
if ($clear_stat_cache) {
if (version_compare(\PHP_VERSION, '5.3.0') >= 0) {
clearstatcache(true, $file_path);
} else {
clearstatcache();
}
}
return $this->fix_integer_overflow(filesize($file_path));
}
/**
* @param string $file_name
*
* @return bool
*/
private function is_valid_file_object($file_name) {
$file_path = $this->get_upload_path($file_name);
if (is_file($file_path) && $file_name[0] !== '.') {
return true;
}
return false;
}
/**
* @param string $file_name
*
* @return null|stdClass
*/
private function get_file_object($file_name) {
if ($this->is_valid_file_object($file_name)) {
$file = new \stdClass();
$file->name = $file_name;
$file->size = $this->get_file_size(
$this->get_upload_path($file_name)
);
$file->url = $this->get_download_url($file->name);
foreach ($this->options['image_versions'] as $version => $options) {
if (!empty($version)) {
if (is_file($this->get_upload_path($file_name, $version))) {
$file->{$version . 'Url'} = $this->get_download_url(
$file->name,
$version
);
}
}
}
$this->set_additional_file_properties($file);
return $file;
}
return null;
}
/**
* @param string $iteration_method
*
* @return array
*/
private function get_file_objects($iteration_method = 'get_file_object') {
$upload_dir = $this->get_upload_path();
if (!is_dir($upload_dir)) {
return [];
}
return array_values(
array_filter(
array_map(
[$this, $iteration_method],
scandir($upload_dir, \SCANDIR_SORT_ASCENDING)
)
)
);
}
/**
* @return int
*/
private function count_file_objects() {
return count($this->get_file_objects('is_valid_file_object'));
}
/**
* @param int|string $error
*
* @return mixed
*/
private function get_error_message($error) {
return $this->error_messages[$error] ?? $error;
}
/**
* @param string $val
*
* @return float
*/
public function get_config_bytes($val) {
$val = trim($val);
$last = strtolower($val[strlen($val) - 1]);
switch ($last) {
case 'g':
$val *= 1024;
// no break
case 'm':
$val *= 1024;
// no break
case 'k':
$val *= 1024;
}
return $this->fix_integer_overflow($val);
}
/**
* @param string $uploaded_file
* @param \stdClass $file
* @param int|string $error
* @param null $index <p>Warning: not used in the code</p>
*
* @return bool
*/
private function validate($uploaded_file, $file, $error, $index) {
if ($error) {
$file->error = $this->get_error_message($error);
return false;
}
$content_length = $this->fix_integer_overflow((int)$this->get_server_var('CONTENT_LENGTH'));
$post_max_size = $this->get_config_bytes(ini_get('post_max_size'));
if ($post_max_size && ($content_length > $post_max_size)) {
$file->error = $this->get_error_message('post_max_size');
return false;
}
if (!preg_match($this->options['accept_file_types'], $file->name)) {
$file->error = $this->get_error_message('accept_file_types');
return false;
}
if ($uploaded_file && is_uploaded_file($uploaded_file)) {
$file_size = $this->get_file_size($uploaded_file);
} else {
$file_size = $content_length;
}
if (
$this->options['max_file_size']
&&
(
$file_size > $this->options['max_file_size']
||
$file->size > $this->options['max_file_size']
)
) {
$file->error = $this->get_error_message('max_file_size');
return false;
}
if (
$this->options['min_file_size']
&&
$file_size < $this->options['min_file_size']
) {
$file->error = $this->get_error_message('min_file_size');
return false;
}
if (
is_int($this->options['max_number_of_files'])
&&
($this->count_file_objects() >= $this->options['max_number_of_files'])
&&
// Ignore additional chunks of existing files:
!is_file($this->get_upload_path($file->name))
) {
$file->error = $this->get_error_message('max_number_of_files');
return false;
}
$max_width = $this->options['max_width'];
$max_height = $this->options['max_height'];
$min_width = $this->options['min_width'];
$min_height = $this->options['min_height'];
if (
(
$max_width
||
$max_height
||
$min_width
||
$min_height
)
&&
preg_match($this->options['image_file_types'], $file->name)
) {
list($img_width, $img_height) = $this->get_image_size($uploaded_file);
// If we are auto rotating the image by default, do the checks on
// the correct orientation
/* @noinspection PhpUsageOfSilenceOperatorInspection */
if (
$this->options['image_versions']['']['auto_orient']
&&
function_exists('exif_read_data')
&&
($exif = @exif_read_data($uploaded_file))
&&
(((int)isset($exif['Orientation']) ? $exif['Orientation'] : '') >= 5)
) {
$tmp = $img_width;
$img_width = $img_height;
$img_height = $tmp;
unset($tmp);
}
}
if (!empty($img_width) && !empty($img_height)) {
if ($max_width && $img_width > $max_width) {
$file->error = $this->get_error_message('max_width');
return false;
}
if ($max_height && $img_height > $max_height) {
$file->error = $this->get_error_message('max_height');
return false;
}
if ($min_width && $img_width < $min_width) {
$file->error = $this->get_error_message('min_width');
return false;
}
if ($min_height && $img_height < $min_height) {
$file->error = $this->get_error_message('min_height');
return false;
}
}
return true;
}
/**
* @param array $matches
*
* @return string
*/
private function upcount_name_callback($matches) {
$index = isset($matches[1]) ? ((int)$matches[1]) + 1 : 1;
$ext = $matches[2] ?? '';
return ' (' . $index . ')' . $ext;
}
/**
* @param string $name
*
* @return null|string|string[]
*/
private function upcount_name($name) {
return preg_replace_callback(
'/(?:(?: \(([\d]+)\))?(\.[^.]+))?$/',
[$this, 'upcount_name_callback'],
$name,
1
);
}
/**
* @param null $file_path <p>Warning: not used in the code</p>
* @param string $name
* @param null $size <p>Warning: not used in the code</p>
* @param null $type <p>Warning: not used in the code</p>
* @param null $error <p>Warning: not used in the code</p>
* @param null $index <p>Warning: not used in the code</p>
* @param int $content_range
*
* @return null|string|string[]
*/
private function get_unique_filename(
$file_path,
$name,
$size,
$type,
$error,
$index,
$content_range
) {
while (is_dir($this->get_upload_path($name))) {
$name = $this->upcount_name($name);
}
// Keep an existing filename if this is part of a chunked upload:
$uploaded_bytes = $this->fix_integer_overflow((int)$content_range[1]);
while (is_file($this->get_upload_path($name))) {
if ($uploaded_bytes === $this->get_file_size($this->get_upload_path($name))) {
break;
}
$name = $this->upcount_name($name);
}
return $name;
}
/**
* @param string $file_path
* @param string $name
* @param null $size <p>Warning: not used in the code</p>
* @param string $type
* @param null $error <p>Warning: not used in the code</p>
* @param null $index <p>Warning: not used in the code</p>
* @param null $content_range <p>Warning: not used in the code</p>
*
* @return string
*/
private function fix_file_extension(
$file_path,
$name,
$size,
$type,
$error,
$index,
$content_range
) {
// Add missing file extension for known image types:
if (strpos($name, '.') === false &&
preg_match('/^image\/(gif|jpe?g|png)/', $type, $matches)) {
$name .= '.' . $matches[1];
}
if ($this->options['correct_image_extensions'] &&
function_exists('exif_imagetype')) {
/* @noinspection PhpUsageOfSilenceOperatorInspection */
switch (@exif_imagetype($file_path)) {
case \IMAGETYPE_JPEG:
$extensions = ['jpg', 'jpeg'];
break;
case \IMAGETYPE_PNG:
$extensions = ['png'];
break;
case \IMAGETYPE_GIF:
$extensions = ['gif'];
break;
}
// Adjust incorrect image file extensions:
if (!empty($extensions)) {
$parts = explode('.', $name);
$extIndex = count($parts) - 1;
$ext = strtolower($parts[$extIndex]);
if (!in_array($ext, $extensions)) {
$parts[$extIndex] = $extensions[0];
$name = implode('.', $parts);
}
}
}
return $name;
}
/**
* @param null $file_path <p>Warning: not used in the code</p>
* @param string $name
* @param null $size <p>Warning: not used in the code</p>
* @param null $type <p>Warning: not used in the code</p>
* @param null $error <p>Warning: not used in the code</p>
* @param null $index <p>Warning: not used in the code</p>
* @param null $content_range <p>Warning: not used in the code</p>
*
* @return mixed|string
*/
private function trim_file_name(
$file_path,
$name,
$size,
$type,
$error,
$index,
$content_range
) {
// Remove path information and dots around the filename, to prevent uploading
// into different directories or replacing hidden system files.
// Also remove control characters and spaces (\x00..\x20) around the filename:
$name = trim(basename(stripslashes($name)), ".\x00..\x20");
// Use a timestamp for empty filenames:
if (!$name) {
$name = str_replace('.', '-', microtime(true));
}
return $name;
}
/**
* @param string $file_path
* @param string $name
* @param int $size
* @param string $type
* @param mixed $error
* @param int|string $index
* @param int $content_range
*
* @return null|string|string[]
*/
private function get_file_name(
$file_path,
$name,
$size,
$type,
$error,
$index,
$content_range
) {
$name = $this->trim_file_name($file_path, $name, $size, $type, $error, $index, $content_range);
return $this->get_unique_filename(
$file_path,
$this->fix_file_extension($file_path, $name, $size, $type, $error, $index, $content_range),
$size,
$type,
$error,
$index,
$content_range
);
}
/**
* @param string $file_name
* @param string $version
*
* @return array
*/
private function get_scaled_image_file_paths($file_name, $version) {
$file_path = $this->get_upload_path($file_name);
if (!empty($version)) {
$version_dir = $this->get_upload_path(null, $version);
if (!is_dir($version_dir)) {
if (
!mkdir($version_dir, $this->options['mkdir_mode'], true)
&&
!is_dir($version_dir)
) {
throw new \RuntimeException(sprintf('Directory "%s" was not created', $version_dir));
}
}
$new_file_path = $version_dir . '/' . $file_name;
} else {
$new_file_path = $file_path;
}
return [$file_path, $new_file_path];
}
/**
* @param string $file_path
* @param string $func
* @param bool $no_cache
*
* @return mixed
*/
private function gd_get_image_object($file_path, $func, $no_cache = false) {
if (empty($this->image_objects[$file_path]) || $no_cache) {
$this->gd_destroy_image_object($file_path);
$this->image_objects[$file_path] = $func($file_path);
}
return $this->image_objects[$file_path];
}
/**
* @param string $file_path
* @param resource $image
*/
private function gd_set_image_object($file_path, $image) {
$this->gd_destroy_image_object($file_path);
$this->image_objects[$file_path] = $image;
}
/**
* @param string $file_path
*
* @return bool
*/
private function gd_destroy_image_object($file_path) {
$image = $this->image_objects[$file_path] ?? null;
return $image && imagedestroy($image);
}
/**
* @param resource $image
* @param int $mode
*
* @return bool|resource
*/
private function gd_imageflip($image, $mode) {
if (function_exists('imageflip')) {
return imageflip($image, $mode);
}
$new_width = $src_width = imagesx($image);
$new_height = $src_height = imagesy($image);
$new_img = imagecreatetruecolor($new_width, $new_height);
$src_x = 0;
$src_y = 0;
switch ($mode) {
case '1': // flip on the horizontal axis
$src_y = $new_height - 1;
$src_height = -$new_height;
break;
case '2': // flip on the vertical axis
$src_x = $new_width - 1;
$src_width = -$new_width;
break;
case '3': // flip on both axes
$src_y = $new_height - 1;
$src_height = -$new_height;
$src_x = $new_width - 1;
$src_width = -$new_width;
break;
default:
return $image;
}
imagecopyresampled(
$new_img,
$image,
0,
0,
$src_x,
$src_y,
$new_width,
$new_height,
$src_width,
$src_height
);
return $new_img;
}
/**
* @param string $file_path
* @param resource $src_img
*
* @return bool
*/
private function gd_orient_image($file_path, $src_img) {
if (!function_exists('exif_read_data')) {
return false;
}
/* @noinspection PhpUsageOfSilenceOperatorInspection */
$exif = @exif_read_data($file_path);
if ($exif === false) {
return false;
}
$orientation = (int)isset($exif['Orientation']) ? $exif['Orientation'] : 0;
if ($orientation < 2 || $orientation > 8) {
return false;
}
switch ($orientation) {
case 2:
$new_img = $this->gd_imageflip(
$src_img,
defined('IMG_FLIP_VERTICAL') ? \IMG_FLIP_VERTICAL : 2
);
break;
case 3:
$new_img = imagerotate($src_img, 180, 0);
break;
case 4:
$new_img = $this->gd_imageflip(
$src_img,
defined('IMG_FLIP_HORIZONTAL') ? \IMG_FLIP_HORIZONTAL : 1
);
break;
case 5:
$tmp_img = $this->gd_imageflip(
$src_img,
defined('IMG_FLIP_HORIZONTAL') ? \IMG_FLIP_HORIZONTAL : 1
);
$new_img = imagerotate($tmp_img, 270, 0);
imagedestroy($tmp_img);
break;
case 6:
$new_img = imagerotate($src_img, 270, 0);
break;
case 7:
$tmp_img = $this->gd_imageflip(
$src_img,
defined('IMG_FLIP_VERTICAL') ? \IMG_FLIP_VERTICAL : 2
);
$new_img = imagerotate($tmp_img, 270, 0);
imagedestroy($tmp_img);
break;
case 8:
$new_img = imagerotate($src_img, 90, 0);
break;
default:
return false;
}
$this->gd_set_image_object($file_path, $new_img);
return true;
}
/**
* @param string $file_name
* @param string $version
* @param array $options
*
* @return bool
*/
private function gd_create_scaled_image($file_name, $version, $options) {
if (!function_exists('imagecreatetruecolor')) {
ErrorHandlerLib::vdmgReportError('Function not found: imagecreatetruecolor');
return false;
}
list($file_path, $new_file_path) = $this->get_scaled_image_file_paths($file_name, $version);
$type = strtolower(substr(strrchr($file_name, '.'), 1));
switch ($type) {
case 'jpg':
case 'jpeg':
$src_func = 'imagecreatefromjpeg';
$write_func = 'imagejpeg';
$image_quality = $options['jpeg_quality'] ?? 75;
break;
case 'gif':
$src_func = 'imagecreatefromgif';
$write_func = 'imagegif';
$image_quality = null;
break;
case 'png':
$src_func = 'imagecreatefrompng';
$write_func = 'imagepng';
$image_quality = $options['png_quality'] ?? 9;
break;
default:
return false;
}
$src_img = $this->gd_get_image_object($file_path, $src_func, !empty($options['no_cache']));
$image_oriented = false;
if (
!empty($options['auto_orient'])
&&
$this->gd_orient_image($file_path, $src_img)
) {
$image_oriented = true;
$src_img = $this->gd_get_image_object($file_path, $src_func);
}
$max_width = $img_width = imagesx($src_img);
$max_height = $img_height = imagesy($src_img);
if (!empty($options['max_width'])) {
$max_width = $options['max_width'];
}
if (!empty($options['max_height'])) {
$max_height = $options['max_height'];
}
$scale = min(
$max_width / $img_width,
$max_height / $img_height
);
if ($scale >= 1) {
if ($image_oriented) {
switch ($write_func) {
case 'imagejpeg':
return imagejpeg($src_img, $new_file_path, $image_quality);
case 'imagegif':
return imagegif($src_img, $new_file_path);
case 'imagepng':
return imagepng($src_img, $new_file_path, $image_quality);
default:
return false;
}
}
if ($file_path !== $new_file_path) {
return copy($file_path, $new_file_path);
}
return true;
}
if (empty($options['crop'])) {
$new_width = $img_width * $scale;
$new_height = $img_height * $scale;
$dst_x = 0;
$dst_y = 0;
$new_img = imagecreatetruecolor($new_width, $new_height);
} else {
if (($img_width / $img_height) >= ($max_width / $max_height)) {
$new_width = $img_width / ($img_height / $max_height);
$new_height = $max_height;
} else {
$new_width = $max_width;
$new_height = $img_height / ($img_width / $max_width);
}
$dst_x = 0 - ($new_width - $max_width) / 2;
$dst_y = 0 - ($new_height - $max_height) / 2;
$new_img = imagecreatetruecolor($max_width, $max_height);
}
// Handle transparency in GIF and PNG images:
switch ($type) {
case 'gif':
case 'png':
imagecolortransparent($new_img, imagecolorallocate($new_img, 0, 0, 0));
imagealphablending($new_img, false);
imagesavealpha($new_img, true);
break;
}
$success = imagecopyresampled(
$new_img,
$src_img,
$dst_x,
$dst_y,
0,
0,
$new_width,
$new_height,
$img_width,
$img_height
);
if ($success) {
switch ($write_func) {
case 'imagejpeg':
$success = imagejpeg($new_img, $new_file_path, $image_quality);
break;
case 'imagegif':
$success = imagegif($new_img, $new_file_path);
break;
case 'imagepng':
$success = imagepng($new_img, $new_file_path, $image_quality);
break;
default:
return false;
}
}
$this->gd_set_image_object($file_path, $new_img);
return $success;
}
/**
* @param string $file_path
* @param bool $no_cache
*
* @return mixed
*/
private function imagick_get_image_object($file_path, $no_cache = false) {
if (empty($this->image_objects[$file_path]) || $no_cache) {
$this->imagick_destroy_image_object($file_path);
$image = new \Imagick();
if (!empty($this->options['imagick_resource_limits'])) {
foreach ($this->options['imagick_resource_limits'] as $type => $limit) {
$image::setResourceLimit($type, $limit);
}
}
$image->readImage($file_path);
$this->image_objects[$file_path] = $image;
}
return $this->image_objects[$file_path];
}
/**
* @param string $file_path
* @param resource $image
*/
private function imagick_set_image_object($file_path, $image) {
$this->imagick_destroy_image_object($file_path);
$this->image_objects[$file_path] = $image;
}
/**
* @param string $file_path
*
* @return bool
*/
private function imagick_destroy_image_object($file_path) {
$image = $this->image_objects[$file_path] ?? null;
return $image && $image->destroy();
}
/**
* @param \Imagick $image
*
* @return bool
*/
private function imagick_orient_image($image) {
$orientation = $image->getImageOrientation();
$background = new \ImagickPixel('none');
switch ($orientation) {
case \Imagick::ORIENTATION_TOPRIGHT: // 2
$image->flopImage(); // horizontal flop around y-axis
break;
case \Imagick::ORIENTATION_BOTTOMRIGHT: // 3
$image->rotateImage($background, 180);
break;
case \Imagick::ORIENTATION_BOTTOMLEFT: // 4
$image->flipImage(); // vertical flip around x-axis
break;
case \Imagick::ORIENTATION_LEFTTOP: // 5
$image->flopImage(); // horizontal flop around y-axis
$image->rotateImage($background, 270);
break;
case \Imagick::ORIENTATION_RIGHTTOP: // 6
$image->rotateImage($background, 90);
break;
case \Imagick::ORIENTATION_RIGHTBOTTOM: // 7
$image->flipImage(); // vertical flip around x-axis
$image->rotateImage($background, 270);
break;
case \Imagick::ORIENTATION_LEFTBOTTOM: // 8
$image->rotateImage($background, 270);
break;
default:
return false;
}
$image->setImageOrientation(\Imagick::ORIENTATION_TOPLEFT); // 1
return true;
}
/**
* @param string $file_name
* @param string $version
* @param array $options
*
* @return bool
*/
private function imagick_create_scaled_image($file_name, $version, $options) {
list($file_path, $new_file_path) = $this->get_scaled_image_file_paths($file_name, $version);
$image = $this->imagick_get_image_object($file_path, !empty($options['crop']) || !empty($options['no_cache']));
if ($image->getImageFormat() === 'GIF') {
// Handle animated GIFs:
$images = $image->coalesceImages();
foreach ($images as $frame) {
$image = $frame;
$this->imagick_set_image_object($file_name, $image);
break;
}
}
$image_oriented = false;
if (!empty($options['auto_orient'])) {
$image_oriented = $this->imagick_orient_image($image);
}
$new_width = $max_width = $img_width = $image->getImageWidth();
$new_height = $max_height = $img_height = $image->getImageHeight();
if (!empty($options['max_width'])) {
$new_width = $max_width = $options['max_width'];
}
if (!empty($options['max_height'])) {
$new_height = $max_height = $options['max_height'];
}
if (!($image_oriented || $max_width < $img_width || $max_height < $img_height)) {
if ($file_path !== $new_file_path) {
return copy($file_path, $new_file_path);
}
return true;
}
$crop = !empty($options['crop']);
$x = null;
$y = null;
if ($crop) {
$x = 0;
$y = 0;
if (($img_width / $img_height) >= ($max_width / $max_height)) {
$new_width = 0; // Enables proportional scaling based on max_height
$x = ($img_width / ($img_height / $max_height) - $max_width) / 2;
} else {
$new_height = 0; // Enables proportional scaling based on max_width
$y = ($img_height / ($img_width / $max_width) - $max_height) / 2;
}
}
$success = $image->resizeImage(
$new_width,
$new_height,
$options['filter'] ?? \Imagick::FILTER_LANCZOS,
$options['blur'] ?? 1,
$new_width && $new_height // fit image into constraints if not to be cropped
);
if ($success && $crop) {
$success = $image->cropImage(
$max_width,
$max_height,
$x,
$y
);
if ($success) {
$success = $image->setImagePage($max_width, $max_height, 0, 0);
}
}
$type = strtolower(substr(strrchr($file_name, '.'), 1));
switch ($type) {
case 'jpg':
case 'jpeg':
if (!empty($options['jpeg_quality'])) {
$image->setImageCompression(\Imagick::COMPRESSION_JPEG);
$image->setImageCompressionQuality($options['jpeg_quality']);
}
break;
}
if (!empty($options['strip'])) {
$image->stripImage();
}
return $success && $image->writeImage($new_file_path);
}
/**
* @param string $file_name
* @param string $version
* @param array $options
*
* @return bool
*/
private function imagemagick_create_scaled_image($file_name, $version, $options) {
list($file_path, $new_file_path) = $this->get_scaled_image_file_paths($file_name, $version);
$resize = $options['max_width'] . (empty($options['max_height']) ? '' : 'X' . $options['max_height']);
if (!$resize && empty($options['auto_orient'])) {
if ($file_path !== $new_file_path) {
return copy($file_path, $new_file_path);
}
return true;
}
$cmd = $this->options['convert_bin'];
if (!empty($this->options['convert_params'])) {
$cmd .= ' ' . $this->options['convert_params'];
}
$cmd .= ' ' . escapeshellarg($file_path);
if (!empty($options['auto_orient'])) {
$cmd .= ' -auto-orient';
}
if ($resize) {
// Handle animated GIFs:
$cmd .= ' -coalesce';
if (empty($options['crop'])) {
$cmd .= ' -resize ' . escapeshellarg($resize . '>');
} else {
$cmd .= ' -resize ' . escapeshellarg($resize . '^');
$cmd .= ' -gravity center';
$cmd .= ' -crop ' . escapeshellarg($resize . '+0+0');
}
// Make sure the page dimensions are correct (fixes offsets of animated GIFs):
$cmd .= ' +repage';
}
if (!empty($options['convert_params'])) {
$cmd .= ' ' . $options['convert_params'];
}
$cmd .= ' ' . escapeshellarg($new_file_path);
exec($cmd, $output, $error);
if ($error) {
ErrorHandlerLib::vdmgReportError(implode('\n', $output));
return false;
}
return true;
}
/**
* @param string $file_path
*
* @return array|array[]|bool|false|string[]
*/
private function get_image_size($file_path) {
if ($this->options['image_library']) {
if (extension_loaded('imagick')) {
$image = new \Imagick();
try {
if ($image->pingImage($file_path)) {
$dimensions = [$image->getImageWidth(), $image->getImageHeight()];
$image->destroy();
return $dimensions;
}
return false;
} catch (\Exception $e) {
ErrorHandlerLib::vdmgReportError($e->getMessage());
}
}
if ($this->options['image_library'] === 2) {
$cmd = $this->options['identify_bin'];
$cmd .= ' -ping ' . escapeshellarg($file_path);
exec($cmd, $output, $error);
if (!$error && !empty($output)) {
// image.jpg JPEG 1920x1080 1920x1080+0+0 8-bit sRGB 465KB 0.000u 0:00.000
$infos = preg_split('/\s+/', substr($output[0], strlen($file_path)));
$dimensions = preg_split('/x/', $infos[2]);
return $dimensions;
}
return false;
}
}
if (!function_exists('getimagesize')) {
ErrorHandlerLib::vdmgReportError('Function not found: getimagesize');
return false;
}
/* @noinspection PhpUsageOfSilenceOperatorInspection */
return @getimagesize($file_path);
}
/**
* @param string $file_name
* @param string $version
* @param array $options
*
* @return bool
*/
private function create_scaled_image($file_name, $version, $options) {
if ($this->options['image_library'] === 2) {
return $this->imagemagick_create_scaled_image($file_name, $version, $options);
}
if ($this->options['image_library'] && extension_loaded('imagick')) {
return $this->imagick_create_scaled_image($file_name, $version, $options);
}
return $this->gd_create_scaled_image($file_name, $version, $options);
}
/**
* @param string $file_path
*
* @return bool
*/
private function destroy_image_object($file_path) {
if (
$this->options['image_library']
&&
extension_loaded('imagick')
) {
return $this->imagick_destroy_image_object($file_path);
}
return false;
}
/**
* @param string $file_path
*
* @return bool|int
*/
private function is_valid_image_file($file_path) {
if (!preg_match($this->options['image_file_types'], $file_path)) {
return false;
}
if (function_exists('exif_imagetype')) {
/* @noinspection PhpUsageOfSilenceOperatorInspection */
return @exif_imagetype($file_path);
}
$image_info = $this->get_image_size($file_path);
return $image_info && $image_info[0] && $image_info[1];
}
/**
* @param string $file_path
* @param \stdClass $file
*/
private function handle_image_file($file_path, $file) {
$failed_versions = [];
foreach ($this->options['image_versions'] as $version => $options) {
if ($this->create_scaled_image($file->name, $version, $options)) {
if (!empty($version)) {
$file->{$version . 'Url'} = $this->get_download_url(
$file->name,
$version
);
} else {
$file->size = $this->get_file_size($file_path, true);
}
} else {
$failed_versions[] = $version ? $version : 'original';
}
}
if (count($failed_versions)) {
$file->error = $this->get_error_message('image_resize')
. ' (' . implode(', ', $failed_versions) . ')';
}
// Free memory:
$this->destroy_image_object($file_path);
}
/**
* @param string $uploaded_file
* @param string $name
* @param int $size
* @param string $type
* @param mixed $error
* @param null|int $index
* @param null|mixed $content_range
*
* @return stdClass
*/
private function handle_file_upload($uploaded_file, $name, $size, $type, $error, $index = null, $content_range = null) {
$file = new \stdClass();
$file->name = $this->get_file_name($uploaded_file, $name, $size, $type, $error, $index, $content_range);
$file->size = $this->fix_integer_overflow((int)$size);
$file->type = $type;
if ($this->validate($uploaded_file, $file, $error, $index)) {
$this->handle_form_data($file, $index);
$upload_dir = $this->get_upload_path();
if (!is_dir($upload_dir)) {
if (
!mkdir($upload_dir, $this->options['mkdir_mode'], true)
&&
!is_dir($upload_dir)
) {
throw new \RuntimeException(sprintf('Directory "%s" was not created', $upload_dir));
}
}
$file_path = $this->get_upload_path($file->name);
$append_file = $content_range && is_file($file_path) && $file->size > $this->get_file_size($file_path);
if ($uploaded_file && is_uploaded_file($uploaded_file)) {
// multipart/formdata uploads (POST method uploads)
if ($append_file) {
file_put_contents(
$file_path,
fopen($uploaded_file, 'rb'),
\FILE_APPEND
);
} else {
move_uploaded_file($uploaded_file, $file_path);
}
} else {
// Non-multipart uploads (PUT method support)
file_put_contents(
$file_path,
fopen('php://input', 'rb'),
$append_file ? \FILE_APPEND : 0
);
}
$file_size = $this->get_file_size($file_path, $append_file);
if ($file_size === $file->size) {
$file->url = $this->get_download_url($file->name);
if ($this->is_valid_image_file($file_path)) {
$this->handle_image_file($file_path, $file);
}
} else {
$file->size = $file_size;
if (!$content_range && $this->options['discard_aborted_uploads']) {
unlink($file_path);
$file->error = $this->get_error_message('abort');
}
}
$this->set_additional_file_properties($file);
}
return $file;
}
/**
* @param string $file_path
*
* @return false|float|int
*/
private function readfile($file_path) {
$file_size = $this->get_file_size($file_path);
$chunk_size = $this->options['readfile_chunk_size'];
if ($chunk_size && $file_size > $chunk_size) {
$handle = fopen($file_path, 'rb');
while (!feof($handle)) {
echo fread($handle, $chunk_size);
/* @noinspection PhpUsageOfSilenceOperatorInspection */
@ob_flush();
/* @noinspection PhpUsageOfSilenceOperatorInspection */
@flush();
}
fclose($handle);
return $file_size;
}
return readfile($file_path);
}
/**
* @param string $str
*/
private function body($str) {
echo $str;
}
/**
* @param string $str
*/
private function header($str) {
header($str);
}
/**
* @param int $id
*
* @return array|string
*/
private function get_upload_data($id) {
return $_FILES[$id] ?? '';
}
/**
* @param string $id
*
* @return null|string
*/
private function get_post_param($id) {
return $_POST[$id];
}
/**
* @param string $id
*
* @return string|string[]|string[][]
*/
private function get_query_param($id) {
return $_GET[$id] ?? '';
}
/**
* @param string $id
*
* @return string
*/
private function get_server_var($id) {
return $_SERVER[$id] ?? '';
}
/**
* @param \stdClass $file
* @param null|int $index
*/
private function handle_form_data($file, $index) {
// Handle form data, e.g. $_POST['description'][$index]
}
/**
* @return string
*/
private function get_version_param() {
return basename(stripslashes($this->get_query_param('version')));
}
/**
* @return bool|string
*/
private function get_singular_param_name() {
return substr($this->options['param_name'], 0, -1);
}
/**
* @return string
*/
private function get_file_name_param() {
$name = $this->get_singular_param_name();
return basename(stripslashes($this->get_query_param($name)));
}
/**
* @return null|array|string
*/
private function get_file_names_params() {
$params = $this->get_query_param($this->options['param_name']);
if (!$params) {
return null;
}
if (is_array($params)) {
foreach ($params as $key => $value) {
$params[$key] = basename(stripslashes($value));
}
}
return $params;
}
/**
* @param string $file_path
*
* @return string
*/
private function get_file_type($file_path) {
switch (strtolower(pathinfo($file_path, \PATHINFO_EXTENSION))) {
case 'jpeg':
case 'jpg':
return 'image/jpeg';
case 'png':
return 'image/png';
case 'gif':
return 'image/gif';
default:
return '';
}
}
/**
* @return void
*/
private function download() {
switch ($this->options['download_via_php']) {
case 1:
$redirect_header = null;
break;
case 2:
$redirect_header = 'X-Sendfile';
break;
case 3:
$redirect_header = 'X-Accel-Redirect';
break;
default:
$this->header('HTTP/1.1 403 Forbidden');
return;
}
$file_name = $this->get_file_name_param();
if (!$this->is_valid_file_object($file_name)) {
$this->header('HTTP/1.1 404 Not Found');
return;
}
if ($redirect_header) {
$this->header(
$redirect_header . ': ' . $this->get_download_url(
$file_name,
$this->get_version_param(),
true
)
);
return;
}
$file_path = $this->get_upload_path($file_name, $this->get_version_param());
// Prevent browsers from MIME-sniffing the content-type:
$this->header('X-Content-Type-Options: nosniff');
if (!preg_match($this->options['inline_file_types'], $file_name)) {
$this->header('Content-Type: application/octet-stream');
$this->header('Content-Disposition: attachment; filename="' . $file_name . '"');
} else {
$this->header('Content-Type: ' . $this->get_file_type($file_path));
$this->header('Content-Disposition: inline; filename="' . $file_name . '"');
}
$this->header('Content-Length: ' . $this->get_file_size($file_path));
$this->header('Last-Modified: ' . gmdate('D, d M Y H:i:s T', filemtime($file_path)));
$this->readfile($file_path);
}
/**
* @return void
*/
private function send_content_type_header() {
$this->header('Vary: Accept');
if (strpos($this->get_server_var('HTTP_ACCEPT'), 'application/json') !== false) {
$this->header('Content-type: application/json');
} else {
$this->header('Content-type: text/plain');
}
}
/**
* @return void
*/
private function send_access_control_headers() {
$this->header('Access-Control-Allow-Origin: ' . $this->options['access_control_allow_origin']);
$this->header('Access-Control-Allow-Credentials: ' . ($this->options['access_control_allow_credentials'] ? 'true' : 'false'));
$this->header('Access-Control-Allow-Methods: ' . implode(', ', $this->options['access_control_allow_methods']));
$this->header('Access-Control-Allow-Headers: ' . implode(', ', $this->options['access_control_allow_headers']));
}
/**
* @param mixed $content
* @param bool $print_response
*
* @return mixed|void
*/
public function generate_response($content, $print_response = true) {
$this->response = $content;
if ($print_response) {
$json = json_encode($content);
$redirect = stripslashes($this->get_post_param('redirect'));
if ($redirect && preg_match($this->options['redirect_allow_target'], $redirect)) {
$this->header('Location: ' . sprintf($redirect, rawurlencode($json)));
return;
}
$this->head();
if ($this->get_server_var('HTTP_CONTENT_RANGE')) {
$files = $content[$this->options['param_name']] ?? null;
if ($files && is_array($files) && is_object($files[0]) && $files[0]->size) {
$this->header(
'Range: 0-' . (
$this->fix_integer_overflow((int)$files[0]->size) - 1
)
);
}
}
$this->body($json);
}
return $content;
}
/**
* @return array
*/
public function get_response() {
return $this->response;
}
/**
* @return void
*/
public function head() {
$this->header('Pragma: no-cache');
$this->header('Cache-Control: no-store, no-cache, must-revalidate');
$this->header('Content-Disposition: inline; filename="files.json"');
// Prevent Internet Explorer from MIME-sniffing the content-type:
$this->header('X-Content-Type-Options: nosniff');
if ($this->options['access_control_allow_origin']) {
$this->send_access_control_headers();
}
$this->send_content_type_header();
}
/**
* @param bool $print_response
*
* @return mixed|void
*/
public function get($print_response = true) {
if ($print_response && $this->get_query_param('download')) {
$this->download();
return;
}
$file_name = $this->get_file_name_param();
if ($file_name) {
$response = [
$this->get_singular_param_name() => $this->get_file_object($file_name),
];
} else {
$response = [
$this->options['param_name'] => $this->get_file_objects(),
];
}
return $this->generate_response($response, $print_response);
}
/**
* @param bool $print_response
*
* @return mixed|void
*/
public function post($print_response = true) {
if ($this->get_query_param('_method') === 'DELETE') {
return $this->delete($print_response);
}
$upload = $this->get_upload_data($this->options['param_name']);
// Parse the Content-Disposition header, if available:
$content_disposition_header = $this->get_server_var('HTTP_CONTENT_DISPOSITION');
$file_name = $content_disposition_header ?
rawurldecode(
preg_replace(
'/(^[^"]+")|("$)/',
'',
$content_disposition_header
)
) : null;
// Parse the Content-Range header, which has the following form:
// Content-Range: bytes 0-524287/2000000
$content_range_header = $this->get_server_var('HTTP_CONTENT_RANGE');
$content_range = $content_range_header ?
preg_split('/[^0-9]+/', $content_range_header) : null;
$size = $content_range ? $content_range[3] : null;
$files = [];
if ($upload) {
if (is_array($upload['tmp_name'])) {
// param_name is an array identifier like "files[]",
// $upload is a multi-dimensional array:
foreach ($upload['tmp_name'] as $index => $value) {
$files[] = $this->handle_file_upload(
$upload['tmp_name'][$index],
$file_name ? $file_name : $upload['name'][$index],
$size ? $size : $upload['size'][$index],
$upload['type'][$index],
$upload['error'][$index],
$index,
$content_range
);
}
} else {
// param_name is a single object identifier like "file",
// $upload is a one-dimensional array:
$files[] = $this->handle_file_upload(
$upload['tmp_name'] ?? null,
$file_name ? $file_name : ($upload['name'] ?? null),
$size ? $size : ($upload['size'] ?? $this->get_server_var('CONTENT_LENGTH')),
$upload['type'] ?? $this->get_server_var('CONTENT_TYPE'),
$upload['error'] ?? null,
null,
$content_range
);
}
}
$response = [$this->options['param_name'] => $files];
return $this->generate_response($response, $print_response);
}
/**
* @param bool $print_response
*
* @return mixed|void
*/
public function delete($print_response = true) {
$file_names = $this->get_file_names_params();
if (empty($file_names)) {
$file_names = [$this->get_file_name_param()];
}
$response = [];
foreach ($file_names as $file_name) {
$file_path = $this->get_upload_path($file_name);
$success = is_file($file_path) && $file_name[0] !== '.' && unlink($file_path);
if ($success) {
foreach ($this->options['image_versions'] as $version => $options) {
if (!empty($version)) {
$file = $this->get_upload_path($file_name, $version);
if (is_file($file)) {
unlink($file);
}
}
}
}
$response[$file_name] = $success;
}
return $this->generate_response($response, $print_response);
}
}
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