scratch – Blame information for rev 44

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7 office 1 <?php
2  
3 ###########################################################################
4 ## Copyright (C) Wizardry and Steamworks 2017 - License: GNU GPLv3 ##
5 ###########################################################################
6  
13 office 7 require_once('inc/pseudocrypt.php');
8 require_once('inc/functions.php');
7 office 9 require_once('config.php');
10  
11 office 11 #### Retrieve uploaded file.
12 if (!empty($_FILES['file']) and
7 office 13 is_uploaded_file($_FILES['file']['tmp_name'])) {
14 # Regular multipart/form-data upload.
15 $name = $_FILES['file']['name'];
16 $data = file_get_contents($_FILES['file']['tmp_name']);
17 } else {
18 # Raw POST data.
19 $name = urldecode(@$_SERVER['HTTP_X_FILE_NAME']);
20 $data = file_get_contents("php://input");
21 }
22  
14 office 23 #### Grab the file extension.
7 office 24 $fileExtension = pathinfo($name, PATHINFO_EXTENSION);
11 office 25  
14 office 26 #### If the extension is not allowed then change it to a text extension.
27 if (!isset($fileExtension) ||
16 office 28 !in_array(strtoupper($fileExtension),
29 array_map('strtoupper', $ALLOWED_FILE_EXTENSIONS)))
14 office 30 $fileExtension = 'txt';
31  
32 #### Hash filename.
11 office 33 $file = strtolower(
34 PseudoCrypt::hash(
35 preg_replace(
36 '/\D/',
37 '',
38 hash(
39 'sha512',
20 office 40 $data
7 office 41 )
42 )
14 office 43 ). '.'.
11 office 44 $fileExtension
45 );
14 office 46  
47 #### Build the user path.
11 office 48 $userPath = join(
49 DIRECTORY_SEPARATOR,
50 array(
51 $STORE_FOLDER,
52 $file
53 )
54 );
55  
14 office 56 #### Check for path traversals
11 office 57 $pathPart = pathinfo($userPath);
17 office 58 if (strcasecmp(
59 realpath($pathPart['dirname']), realpath($STORE_FOLDER)) != 0)
14 office 60 return;
7 office 61  
14 office 62 #### Store the file.
63 atomized_put_contents($userPath, $data);
64  
11 office 65 ### Return the URL to the file.
7 office 66 header('Content-Type: text/plain; charset=utf-8');
14 office 67 echo sprintf('%s/%s', trim($URL_PATH, '/'), $file);