scratch – Rev 13
?pathlinks?
<?php
###########################################################################
## Copyright (C) Wizardry and Steamworks 2017 - License: GNU GPLv3 ##
###########################################################################
require_once('inc/pseudocrypt.php');
require_once('inc/functions.php');
require_once('config.php');
#### Retrieve uploaded file.
if (!empty($_FILES['file']) and
is_uploaded_file($_FILES['file']['tmp_name'])) {
# Regular multipart/form-data upload.
$name = $_FILES['file']['name'];
$data = file_get_contents($_FILES['file']['tmp_name']);
} else {
# Raw POST data.
$name = urldecode(@$_SERVER['HTTP_X_FILE_NAME']);
$data = file_get_contents("php://input");
}
$fileExtension = pathinfo($name, PATHINFO_EXTENSION);
#### Check that the file extension is allowed.
if(!isset($fileExtension) ||
!in_array(strtoupper($fileExtension), $ALLOWED_FILE_EXTENSIONS))
return;
#### Hash filename and check storage in the upload folder.
$storePath = realpath($STORE_FOLDER);
$file = strtolower(
PseudoCrypt::hash(
preg_replace(
'/\D/',
'',
hash(
'sha512',
$name
)
)
).
'.'.
$fileExtension
);
$userPath = join(
DIRECTORY_SEPARATOR,
array(
$STORE_FOLDER,
$file
)
);
#### Check for path traversals.
$pathPart = pathinfo($userPath);
if (realpath($pathPart['dirname']) == $storePath) {
atomized_put_contents($userPath, $data);
$output = sprintf('%s/%s', trim($URL_PATH, '/'), $file);
}
### Return the URL to the file.
header('Content-Type: text/plain; charset=utf-8');
echo $output;