index.php

   1 <?php
   2         /*
   3                 This program is free software: you can redistribute it and/or modify
   4                 it under the terms of the GNU General Public License as published by
   5                 the Free Software Foundation, either version 3 of the License, or
   6                 (at your option) any later version.
   7
   8                 This program is distributed in the hope that it will be useful,
   9                 but WITHOUT ANY WARRANTY; without even the implied warranty of
  10                 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  11                 GNU General Public License for more details.
  12
  13                 You should have received a copy of the GNU General Public License
  14                 along with this program.  If not, see <http://www.gnu.org/licenses/>.
  15         */
  16
  17         // ============== Configuration begin  ==============
  18
  19         $settings = array(
  20
  21                 // Directory to store uploaded files
  22                 uploaddir => '.',
  23
  24                 // Display list uploaded files
  25                 listfiles => true,
  26
  27                 // Allow users to delete files that they have uploaded (will enable sessions)
  28                 allow_deletion => true,
  29
  30                 // Display file sizes
  31                 listfiles_size => true,
  32
  33                 // Display file dates
  34                 listfiles_date => true,
  35
  36                 // Display file dates format
  37                 listfiles_date_format => 'F d Y H:i:s',
  38
  39                 // Randomize file names (number of 'false')
  40                 random_name_len => 4,
  41
  42                 // Keep filetype information (if random name is activated)
  43                 random_name_keep_type => true,
  44
  45                 // Random file name letters
  46                 random_name_alphabet => 'qwertyuiopasdfghjklzxcvbnm',
  47
  48                 // Display debugging information
  49                 debug => ($_SERVER['SERVER_NAME'] === 'localhost')
  50
  51         );
  52
  53         // ============== Configuration end  ==============
  54
  55     $data = array();
  56
  57         // Name of this file
  58         $data['scriptname'] = pathinfo(__FILE__, PATHINFO_BASENAME);
  59
  60         // URL to upload page
  61         $data['pageurl'] = "http" . (($_SERVER['SERVER_PORT']==443) ? "s://" : "://") . $_SERVER['SERVER_NAME'] . dirname($_SERVER['REQUEST_URI']) . '/';
  62
  63         // Use canonized path
  64         $data['uploaddir'] = realpath($settings['uploaddir']);
  65
  66         // Maximum upload size, set by system
  67         $data['max_upload_size'] = ini_get('upload_max_filesize');
  68
  69         if ($settings['allow_deletion']) {
  70                 session_start();
  71
  72                 if (!isset($_SESSION['upload_user_id']))
  73                         $_SESSION['upload_user_id'] = rand(1000, 9999);
  74
  75                 if (!isset($_SESSION['upload_user_files']))
  76                         $_SESSION['upload_user_files'] = array();
  77         }
  78
  79         if ($settings['debug']) {
  80         // Enabling error reporting
  81         error_reporting(E_ALL);
  82         error_reporting(1);
  83
  84         // Displaying debug information
  85                 echo '<h2>Debugging information: settings</h2>';
  86                 echo '<pre>';
  87                 print_r($settings);
  88                 echo '</pre>';
  89
  90         // Displaying debug information
  91                 echo '<h2>Debugging information: data</h2>';
  92                 echo '<pre>';
  93                 print_r($data);
  94                 echo '</pre>';
  95                 echo '</pre>';
  96
  97         // Displaying debug information
  98                 echo '<h2>Debugging information: _SESSION</h2>';
  99                 echo '<pre>';
 100                 print_r($_SESSION);
 101                 echo '</pre>';
 102         }
 103
 104         function FormatSize ($bytes) {
 105                 $units = array('B', 'KB', 'MB', 'GB', 'TB');
 106
 107                 $bytes = max($bytes, 0);
 108                 $pow = floor(($bytes ? log($bytes) : 0) / log(1024));
 109                 $pow = min($pow, count($units) - 1);
 110
 111                 $bytes /= pow(1024, $pow);
 112
 113                 return ceil($bytes) . ' ' . $units[$pow];
 114         }
 115
 116         function diverse_array ($vector) {
 117             $result = array();
 118             foreach($vector as $key1 => $value1)
 119                 foreach($value1 as $key2 => $value2)
 120                     $result[$key2][$key1] = $value2;
 121             return $result;
 122         }
 123
 124         function UploadFile ($file_data) {
 125                 global $settings;
 126                 global $data;
 127                 global $_SESSION;
 128
 129                 $data['uploaded_file_name'] = basename($file_data['name']);
 130                 $data['target_file_name'] = $file_data['uploaded_file_name'];
 131         if ($settings['random_name_len'] !== false) {
 132                         do {
 133                     $data['target_file_name'] = '';
 134                     while (strlen($data['target_file_name']) < $settings['random_name_len'])
 135                         $data['target_file_name'] .= $settings['random_name_alphabet'][rand(0, strlen($settings['random_name_alphabet']) - 1)];
 136                                 if ($settings['random_name_keep_type'])
 137                                         $data['target_file_name'] .= '.' . pathinfo($data['uploaded_file_name'], PATHINFO_EXTENSION);
 138                         } while (file_exists($data['target_file_name']));
 139         }
 140                 $data['upload_target_file'] = $data['uploaddir'] . DIRECTORY_SEPARATOR . $data['target_file_name'];
 141                 $data['tmp_name'] = $file_data['tmp_name'];
 142
 143
 144                 echo '<pre>';
 145                 print_r($data);
 146                 echo '</pre>';
 147
 148
 149                 if (move_uploaded_file($data['tmp_name'], $data['upload_target_file'])) {
 150                         if ($settings['allow_deletion'])
 151                                 $_SESSION['upload_user_files'][] = $data['target_file_name'];
 152                         echo $data['pageurl'] .  $data['upload_target_file'] . "\n";
 153                         // echo 'File: <b>' . $data['uploaded_file_name'] . '</b> successfully uploaded:<br />';
 154                         // echo 'Size: <b>'. number_format($_FILES['file']['size'] / 1024, 3, '.', '') .'KB</b><br />';
 155                         // echo 'File /URL: <b><a href="http://'.$_SERVER['HTTP_HOST'].rtrim(dirname($_SERVER['REQUEST_URI']), '\\/').'/'.$data['upload_target_file'].'">http://'.$_SERVER['HTTP_HOST'].rtrim(dirname($_SERVER['REQUEST_URI']), '\\/').'/'.$data['upload_target_file'].'</a></b>';
 156                 } else {
 157                         echo 'Error: unable to upload the file.';
 158                 }
 159         }
 160
 161         if (isset($_FILES['file'])) {
 162         if ($settings['debug']) {
 163             // Displaying debug information
 164                 echo '<h2>Debugging information: data</h2>';
 165                 echo '<pre>';
 166                 print_r($data);
 167                 echo '</pre>';
 168             // Displaying debug information
 169                 echo '<h2>Debugging information: file</h2>';
 170                 echo '<pre>';
 171                 print_r($_FILES);
 172                 echo '</pre>';
 173         }
 174
 175                 if (is_array($_FILES['file'])) {
 176                         $file_array = diverse_array($_FILES['file']);
 177                         foreach ($file_array as $file_data)
 178                                 UploadFile($file_data);
 179                 } else
 180                         UploadFile($_FILES['file']);
 181                 exit;
 182         }
 183
 184         if ($settings['allow_deletion'])
 185                 if (isset($_POST))
 186                         if ($_POST['action'] === 'delete')
 187                                 if (in_array($_POST['target'], $_SESSION['upload_user_files']))
 188                                         if (file_exists($_POST['target'])) {
 189                                                 unlink($_POST['target']);
 190                                                 echo 'File has been removed';
 191                                                 exit;
 192                                         }
 193 ?>
 194 <html lang="en-GB">
 195         <head>
 196                 <meta charset="utf-8">
 197                 <title>Simple PHP Upload</title>
 198         </head>
 199         <body>
 200                 <h1>Simple PHP Upload</h1>
 201                 <p>
 202                         Maximum upload size: <?php echo $data['max_upload_size']; ?>
 203                 </p>
 204                 <form action="<?= $data['scriptname'] ?>" method="POST" enctype="multipart/form-data" class="dropzone" id="my-awesome-dropzone">
 205                         <div class="fallback">
 206                                 Choose File: <input type="file" name="file[]" multiple required /><br />
 207                                 <input type="submit" value="Upload" />
 208                         </div>
 209                 </form>
 210                 <?php if ($settings['listfiles']) { ?>
 211                         <strong>Uploaded files:</strong><br />
 212                         <ul>
 213                                 <?php
 214                                         $dh = opendir($settings['uploaddir']);
 215                                         while (false !== ($filename = readdir($dh)))
 216                                                 if (is_file($filename) && !in_array($filename, array('.', '..', $data['scriptname']))) {
 217                                                         $file_info = array();
 218
 219                                                         if ($settings['listfiles_size'])
 220                                                                 $file_info[] = FormatSize(filesize($filename));
 221
 222                                                         if ($settings['listfiles_size'])
 223                                                                 $file_info[] = date($settings['listfiles_date_format'], filemtime($filename));
 224
 225                                                         if ($settings['allow_deletion'])
 226                                                                 if (in_array($filename, $_SESSION['upload_user_files']))
 227                                                                         $file_info[] = '<form action="' . $data['scriptname'] . '" method="POST"><input type="hidden" name="target" value="' . $filename . '" /><input type="hidden" name="action" value="delete" /><button type="submit">delete</button></form>';
 228
 229                                                         $file_info = implode(', ', $file_info);
 230
 231                                                         if (strlen($file_info) > 0)
 232                                                                 $file_info = ' (' . $file_info . ')';
 233
 234                                                         echo "<li><a href=\"$filename\">$filename</a>$file_info</li>";
 235                                                 }
 236                                 ?>
 237                         </ul>
 238                 <?php } ?>
 239         </body>
 240 </html>