scratch – Blame information for rev 87
?pathlinks?
Rev | Author | Line No. | Line |
---|---|---|---|
7 | office | 1 | <?php |
2 | |||
3 | ########################################################################### |
||
4 | ## Copyright (C) Wizardry and Steamworks 2017 - License: GNU GPLv3 ## |
||
5 | ########################################################################### |
||
6 | |||
66 | office | 7 | require_once('php/pseudocrypt.php'); |
8 | require_once('php/functions.php'); |
||
87 | office | 9 | require_once('vendor/autoload.php'); |
7 | office | 10 | |
67 | office | 11 | ### Load configuration. |
12 | $config = spyc_load_file('config.yaml'); |
||
13 | |||
52 | office | 14 | #### POST -> upload / GET -> download |
15 | switch ($_SERVER['REQUEST_METHOD']) { |
||
16 | case 'POST': |
||
17 | #### Retrieve uploaded file. |
||
18 | if (!empty($_FILES['file']) and |
||
19 | is_uploaded_file($_FILES['file']['tmp_name'])) { |
||
67 | office | 20 | if($_FILES['file']['size'] > $config['ALLOWED_ASSET_SIZE'] * 1048576) { |
81 | office | 21 | http_response_code(403); |
22 | die('File size exceeds '.$config['ALLOWED_ASSET_SIZE'].'MiB.'); |
||
57 | office | 23 | } |
52 | office | 24 | # Regular multipart/form-data upload. |
25 | $name = $_FILES['file']['name']; |
||
57 | office | 26 | $data = atomized_get_contents($_FILES['file']['tmp_name']); |
52 | office | 27 | } else { |
67 | office | 28 | if((int)get_file_size("php://input") > $config['ALLOWED_ASSET_SIZE'] * 1048576) { |
81 | office | 29 | http_response_code(403); |
30 | die('File size exceeds '.$config['ALLOWED_ASSET_SIZE'].'MiB.'); |
||
57 | office | 31 | } |
52 | office | 32 | # Raw POST data. |
33 | $name = urldecode(@$_SERVER['HTTP_X_FILE_NAME']); |
||
57 | office | 34 | $data = atomized_get_contents("php://input"); |
52 | office | 35 | } |
7 | office | 36 | |
52 | office | 37 | #### Grab the file extension. |
38 | $fileExtension = pathinfo($name, PATHINFO_EXTENSION); |
||
11 | office | 39 | |
52 | office | 40 | #### If the extension is not allowed then change it to a text extension. |
41 | if (!isset($fileExtension) || |
||
42 | !in_array(strtoupper($fileExtension), |
||
67 | office | 43 | array_map('strtoupper', $config['ALLOWED_FILE_EXTENSIONS']))) { |
81 | office | 44 | http_response_code(403); |
45 | die('File extension not allowed.'); |
||
52 | office | 46 | } |
14 | office | 47 | |
52 | office | 48 | #### Hash filename. |
49 | $file = strtolower( |
||
50 | PseudoCrypt::hash( |
||
51 | preg_replace( |
||
52 | '/\D/', |
||
53 | '', |
||
54 | hash( |
||
55 | 'sha512', |
||
56 | $data |
||
57 | ) |
||
58 | ), |
||
67 | office | 59 | $config['ASSET_HASH_SIZE'] |
7 | office | 60 | ) |
52 | office | 61 | ); |
14 | office | 62 | |
52 | office | 63 | #### Build the user path. |
64 | $userPath = join( |
||
65 | DIRECTORY_SEPARATOR, |
||
66 | array( |
||
67 | office | 67 | $config['STORE_FOLDER'], |
52 | office | 68 | $file |
69 | ) |
||
70 | ); |
||
11 | office | 71 | |
52 | office | 72 | #### Check for path traversals |
73 | $pathPart = pathinfo($userPath.'.'.$fileExtension); |
||
74 | if (strcasecmp( |
||
67 | office | 75 | realpath($pathPart['dirname']), realpath($config['STORE_FOLDER'])) != 0) { |
81 | office | 76 | http_response_code(500); |
77 | die('Internal server error.'); |
||
52 | office | 78 | } |
7 | office | 79 | |
52 | office | 80 | #### Store the file. |
81 | office | 81 | $timestamp = atomized_put_contents($userPath.'.'.$fileExtension, $data); |
14 | office | 82 | |
52 | office | 83 | ### Return the URL to the file. |
84 | header('Content-Type: text/plain; charset=utf-8'); |
||
81 | office | 85 | echo json_encode( |
86 | array( |
||
87 | "hash" => $file, |
||
88 | "timestamp" => $timestamp |
||
89 | ) |
||
90 | ); |
||
52 | office | 91 | break; |
92 | case 'GET': |
||
83 | office | 93 | ### Tell browser not to cache files. |
94 | header("Cache-Control: no-store, no-cache, must-revalidate, max-age=0"); |
||
95 | header("Cache-Control: post-check=0, pre-check=0", false); |
||
96 | header("Pragma: no-cache"); |
||
97 | |||
52 | office | 98 | ### If no file has been specified for download then return. |
81 | office | 99 | if (!isset($_GET['hash']) or empty($_GET['hash'])) { |
100 | http_response_code(404); |
||
101 | die('File not found.'); |
||
52 | office | 102 | } |
103 | |||
53 | office | 104 | ### Find the requested file. |
52 | office | 105 | $file = array_shift( |
106 | preg_grep( |
||
81 | office | 107 | '/'.$_GET['hash'].'/', |
67 | office | 108 | scandir($config['STORE_FOLDER']) |
52 | office | 109 | ) |
110 | ); |
||
111 | |||
81 | office | 112 | if (!isset($file) or empty($file)) { |
113 | http_response_code(404); |
||
114 | die('File not found.'); |
||
115 | } |
||
53 | office | 116 | |
117 | ### Check the path for path traversals. |
||
118 | $fileExtension = pathinfo($file, PATHINFO_EXTENSION); |
||
52 | office | 119 | |
53 | office | 120 | #### If the extension is not allowed then return. |
121 | if (!isset($fileExtension) || |
||
122 | !in_array(strtoupper($fileExtension), |
||
67 | office | 123 | array_map('strtoupper', $config['ALLOWED_FILE_EXTENSIONS']))) { |
81 | office | 124 | http_response_code(403); |
125 | die('File extension not allowed.'); |
||
52 | office | 126 | } |
53 | office | 127 | |
128 | #### Build the user path. |
||
129 | $userPath = join( |
||
130 | DIRECTORY_SEPARATOR, |
||
131 | array( |
||
67 | office | 132 | $config['STORE_FOLDER'], |
53 | office | 133 | $file |
134 | ) |
||
135 | ); |
||
52 | office | 136 | |
53 | office | 137 | #### Check for path traversals |
138 | $pathPart = pathinfo($userPath); |
||
139 | if (strcasecmp( |
||
67 | office | 140 | realpath($pathPart['dirname']), realpath($config['STORE_FOLDER'])) != 0) { |
81 | office | 141 | http_response_code(500); |
142 | die('Internal server error.'); |
||
53 | office | 143 | } |
144 | |||
83 | office | 145 | ### Hook for various file extensions. |
53 | office | 146 | switch(strtoupper($fileExtension)) { |
147 | case "HTML": |
||
148 | case "HTM": |
||
149 | header('Content-type: text/html'); |
||
150 | break; |
||
151 | break; |
||
83 | office | 152 | case "URL": |
153 | if(preg_match("/URL=([^\n]*)\n/", file_get_contents($userPath), $matches)) { |
||
154 | header('Location: '.$matches[1]); |
||
155 | return; |
||
156 | } |
||
157 | break; |
||
53 | office | 158 | default: |
159 | ### Open MIME info database and send the content type. |
||
160 | $finfo = finfo_open(FILEINFO_MIME_TYPE); |
||
161 | if (!$finfo) { |
||
81 | office | 162 | http_response_code(500); |
163 | die('Internal server error.'); |
||
53 | office | 164 | } |
165 | header('Content-type: '.finfo_file($finfo, $userPath)); |
||
166 | finfo_close($finfo); |
||
167 | break; |
||
168 | } |
||
169 | |||
52 | office | 170 | ### Send the file along with the inline content disposition. |
53 | office | 171 | header('Content-length: '.(int)get_file_size($userPath)); |
172 | header('Content-Disposition: inline; filename="' . basename($userPath) . '"'); |
||
173 | header('Content-Transfer-Encoding: binary'); |
||
174 | header('X-Sendfile: '.$userPath); |
||
52 | office | 175 | break; |
176 | } |