scratch – Diff between revs 16 and 17
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Rev 16 | Rev 17 | |||
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1 | <?php |
1 | <?php |
|
2 | |
2 | |
|
3 | ########################################################################### |
3 | ########################################################################### |
|
4 | ## Copyright (C) Wizardry and Steamworks 2017 - License: GNU GPLv3 ## |
4 | ## Copyright (C) Wizardry and Steamworks 2017 - License: GNU GPLv3 ## |
|
5 | ########################################################################### |
5 | ########################################################################### |
|
6 | |
6 | |
|
7 | require_once('inc/pseudocrypt.php'); |
7 | require_once('inc/pseudocrypt.php'); |
|
8 | require_once('inc/functions.php'); |
8 | require_once('inc/functions.php'); |
|
9 | require_once('config.php'); |
9 | require_once('config.php'); |
|
10 | |
10 | |
|
11 | #### Retrieve uploaded file. |
11 | #### Retrieve uploaded file. |
|
12 | if (!empty($_FILES['file']) and |
12 | if (!empty($_FILES['file']) and |
|
13 | is_uploaded_file($_FILES['file']['tmp_name'])) { |
13 | is_uploaded_file($_FILES['file']['tmp_name'])) { |
|
14 | # Regular multipart/form-data upload. |
14 | # Regular multipart/form-data upload. |
|
15 | $name = $_FILES['file']['name']; |
15 | $name = $_FILES['file']['name']; |
|
16 | $data = file_get_contents($_FILES['file']['tmp_name']); |
16 | $data = file_get_contents($_FILES['file']['tmp_name']); |
|
17 | } else { |
17 | } else { |
|
18 | # Raw POST data. |
18 | # Raw POST data. |
|
19 | $name = urldecode(@$_SERVER['HTTP_X_FILE_NAME']); |
19 | $name = urldecode(@$_SERVER['HTTP_X_FILE_NAME']); |
|
20 | $data = file_get_contents("php://input"); |
20 | $data = file_get_contents("php://input"); |
|
21 | } |
21 | } |
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22 | |
22 | |
|
23 | #### Grab the file extension. |
23 | #### Grab the file extension. |
|
24 | $fileExtension = pathinfo($name, PATHINFO_EXTENSION); |
24 | $fileExtension = pathinfo($name, PATHINFO_EXTENSION); |
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25 | |
25 | |
|
26 | #### If the extension is not allowed then change it to a text extension. |
26 | #### If the extension is not allowed then change it to a text extension. |
|
27 | if (!isset($fileExtension) || |
27 | if (!isset($fileExtension) || |
|
28 | !in_array(strtoupper($fileExtension), |
28 | !in_array(strtoupper($fileExtension), |
|
29 | array_map('strtoupper', $ALLOWED_FILE_EXTENSIONS))) |
29 | array_map('strtoupper', $ALLOWED_FILE_EXTENSIONS))) |
|
30 | $fileExtension = 'txt'; |
30 | $fileExtension = 'txt'; |
|
31 | |
31 | |
|
32 | #### Hash filename. |
32 | #### Hash filename. |
|
33 | $file = strtolower( |
33 | $file = strtolower( |
|
34 | PseudoCrypt::hash( |
34 | PseudoCrypt::hash( |
|
35 | preg_replace( |
35 | preg_replace( |
|
36 | '/\D/', |
36 | '/\D/', |
|
37 | '', |
37 | '', |
|
38 | hash( |
38 | hash( |
|
39 | 'sha512', |
39 | 'sha512', |
|
40 | $name |
40 | $name |
|
41 | ) |
41 | ) |
|
42 | ) |
42 | ) |
|
43 | ). '.'. |
43 | ). '.'. |
|
44 | $fileExtension |
44 | $fileExtension |
|
45 | ); |
45 | ); |
|
46 | |
46 | |
|
47 | #### Build the user path. |
47 | #### Build the user path. |
|
48 | $userPath = join( |
48 | $userPath = join( |
|
49 | DIRECTORY_SEPARATOR, |
49 | DIRECTORY_SEPARATOR, |
|
50 | array( |
50 | array( |
|
51 | $STORE_FOLDER, |
51 | $STORE_FOLDER, |
|
52 | $file |
52 | $file |
|
53 | ) |
53 | ) |
|
54 | ); |
54 | ); |
|
55 | |
55 | |
|
56 | #### Check for path traversals |
56 | #### Check for path traversals |
|
57 | $pathPart = pathinfo($userPath); |
57 | $pathPart = pathinfo($userPath); |
|
- | 58 | if (strcasecmp( |
||
58 | if (strcasecmp(realpath($pathPart['dirname']), realpath($STORE_FOLDER)) != 0) |
59 | realpath($pathPart['dirname']), realpath($STORE_FOLDER)) != 0) |
|
59 | return; |
60 | return; |
|
60 | |
61 | |
|
61 | #### Store the file. |
62 | #### Store the file. |
|
62 | atomized_put_contents($userPath, $data); |
63 | atomized_put_contents($userPath, $data); |
|
63 | |
64 | |
|
64 | ### Return the URL to the file. |
65 | ### Return the URL to the file. |
|
65 | header('Content-Type: text/plain; charset=utf-8'); |
66 | header('Content-Type: text/plain; charset=utf-8'); |
|
66 | echo sprintf('%s/%s', trim($URL_PATH, '/'), $file); |
67 | echo sprintf('%s/%s', trim($URL_PATH, '/'), $file); |
|
67 | |
68 | |