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   1  <?php
   2  /**
   3   *
   4   * This file is part of the phpBB Forum Software package.
   5   *
   6   * @copyright (c) phpBB Limited <https://www.phpbb.com>
   7   * @license GNU General Public License, version 2 (GPL-2.0)
   8   *
   9   * For full copyright and license information, please see
  10   * the docs/CREDITS.txt file.
  11   *
  12   */
  13  
  14  namespace phpbb\install\module\requirements\task;
  15  
  16  /**
  17   * Checks filesystem requirements
  18   */
  19  class check_filesystem extends \phpbb\install\task_base
  20  {
  21      /**
  22       * @var \phpbb\filesystem\filesystem_interface
  23       */
  24      protected $filesystem;
  25  
  26      /**
  27       * @var array
  28       */
  29      protected $files_to_check;
  30  
  31      /**
  32       * @var bool
  33       */
  34      protected $tests_passed;
  35  
  36      /**
  37       * @var string
  38       */
  39      protected $phpbb_root_path;
  40  
  41      /**
  42       * @var \phpbb\install\helper\iohandler\iohandler_interface
  43       */
  44      protected $response;
  45  
  46      /**
  47       * Constructor
  48       *
  49       * @param \phpbb\filesystem\filesystem_interface                $filesystem            filesystem handler
  50       * @param \phpbb\install\helper\iohandler\iohandler_interface    $response            response helper
  51       * @param string                                                $phpbb_root_path    relative path to phpBB's root
  52       * @param string                                                $php_ext            extension of php files
  53       * @param bool                                                    $check_config_php    Whether or not to check if config.php is writable
  54       */
  55  	public function __construct(\phpbb\filesystem\filesystem_interface $filesystem, \phpbb\install\helper\iohandler\iohandler_interface $response, $phpbb_root_path, $php_ext, $check_config_php = true)
  56      {
  57          parent::__construct(true);
  58  
  59          $this->filesystem        = $filesystem;
  60          $this->response            = $response;
  61          $this->phpbb_root_path    = $phpbb_root_path;
  62  
  63          $this->tests_passed = false;
  64  
  65          // Files/Directories to check
  66          // All file/directory names must be relative to phpBB's root path
  67          $this->files_to_check = array(
  68              array(
  69                  'path' => 'cache/',
  70                  'failable' => false,
  71                  'is_file' => false,
  72              ),
  73              array(
  74                  'path' => 'store/',
  75                  'failable' => false,
  76                  'is_file' => false,
  77              ),
  78              array(
  79                  'path' => 'files/',
  80                  'failable' => false,
  81                  'is_file' => false,
  82              ),
  83              array(
  84                  'path' => 'images/avatars/upload/',
  85                  'failable' => true,
  86                  'is_file' => false,
  87              ),
  88          );
  89  
  90          if ($check_config_php)
  91          {
  92              $this->files_to_check[] = array(
  93                  'path' => "config.$php_ext",
  94                  'failable' => false,
  95                  'is_file' => true,
  96              );
  97          }
  98      }
  99  
 100      /**
 101       * {@inheritdoc}
 102       */
 103  	public function run()
 104      {
 105          $this->tests_passed = true;
 106  
 107          // Check files/directories to be writable
 108          foreach ($this->files_to_check as $file)
 109          {
 110              if ($file['is_file'])
 111              {
 112                  $this->check_file($file['path'], $file['failable']);
 113              }
 114              else
 115              {
 116                  $this->check_dir($file['path'], $file['failable']);
 117              }
 118          }
 119  
 120          return $this->tests_passed;
 121      }
 122  
 123      /**
 124       * Sets $this->tests_passed
 125       *
 126       * @param    bool    $is_passed
 127       */
 128  	protected function set_test_passed($is_passed)
 129      {
 130          // If one test failed, tests_passed should be false
 131          $this->tests_passed = (!$this->tests_passed) ? false : $is_passed;
 132      }
 133  
 134      /**
 135       * Check if a file is readable and writable
 136       *
 137       * @param string    $file        Filename
 138       * @param bool        $failable    Whether failing test should interrupt installation process
 139       */
 140  	protected function check_file($file, $failable = false)
 141      {
 142          $path = $this->phpbb_root_path . $file;
 143          $exists = $writable = true;
 144  
 145          // Try to create file if it does not exists
 146          if (!file_exists($path))
 147          {
 148              $fp = @fopen($path, 'w');
 149              @fclose($fp);
 150              try
 151              {
 152                  $this->filesystem->phpbb_chmod($path,
 153                      \phpbb\filesystem\filesystem_interface::CHMOD_READ | \phpbb\filesystem\filesystem_interface::CHMOD_WRITE
 154                  );
 155                  $exists = true;
 156              }
 157              catch (\phpbb\filesystem\exception\filesystem_exception $e)
 158              {
 159                  // Do nothing
 160              }
 161          }
 162  
 163          if (file_exists($path))
 164          {
 165              if (!$this->filesystem->is_writable($path))
 166              {
 167                  $writable = false;
 168              }
 169          }
 170          else
 171          {
 172              $exists = $writable = false;
 173          }
 174  
 175          $this->set_test_passed(($exists && $writable) || $failable);
 176  
 177          if (!($exists && $writable))
 178          {
 179              $title = ($exists) ? 'FILE_NOT_WRITABLE' : 'FILE_NOT_EXISTS';
 180              $lang_suffix = '_EXPLAIN';
 181              $lang_suffix .= ($failable) ? '_OPTIONAL' : '';
 182              $description = array($title . $lang_suffix, $file);
 183  
 184              if ($failable)
 185              {
 186                  $this->response->add_warning_message($title, $description);
 187              }
 188              else
 189              {
 190                  $this->response->add_error_message($title, $description);
 191              }
 192          }
 193      }
 194  
 195      /**
 196       * Check if a directory is readable and writable
 197       *
 198       * @param string    $dir        Filename
 199       * @param bool        $failable    Whether failing test should abort the installation process
 200       */
 201  	protected function check_dir($dir, $failable = false)
 202      {
 203          $path = $this->phpbb_root_path . $dir;
 204          $exists = $writable = false;
 205  
 206          // Try to create the directory if it does not exist
 207          if (!file_exists($path))
 208          {
 209              try
 210              {
 211                  $this->filesystem->mkdir($path, 0777);
 212                  $this->filesystem->phpbb_chmod($path,
 213                      \phpbb\filesystem\filesystem_interface::CHMOD_READ | \phpbb\filesystem\filesystem_interface::CHMOD_WRITE
 214                  );
 215                  $exists = true;
 216              }
 217              catch (\phpbb\filesystem\exception\filesystem_exception $e)
 218              {
 219                  // Do nothing
 220                  $this->response->add_warning_message($e->getMessage(), $e->get_filename());
 221              }
 222          }
 223  
 224          // Now really check
 225          if (file_exists($path) && is_dir($path))
 226          {
 227              try
 228              {
 229                  $exists = true;
 230                  $this->filesystem->phpbb_chmod($path,
 231                      \phpbb\filesystem\filesystem_interface::CHMOD_READ | \phpbb\filesystem\filesystem_interface::CHMOD_WRITE
 232                  );
 233              }
 234              catch (\phpbb\filesystem\exception\filesystem_exception $e)
 235              {
 236                  $this->response->add_warning_message($e->getMessage(), $e->get_filename());
 237                  // Do nothing
 238              }
 239          }
 240  
 241          if ($this->filesystem->is_writable($path))
 242          {
 243              $writable = true;
 244          }
 245  
 246          $this->set_test_passed(($exists && $writable) || $failable);
 247  
 248          if (!($exists && $writable))
 249          {
 250              $title = ($exists) ? 'DIRECTORY_NOT_WRITABLE' : 'DIRECTORY_NOT_EXISTS';
 251              $lang_suffix = '_EXPLAIN';
 252              $lang_suffix .= ($failable) ? '_OPTIONAL' : '';
 253              $description = array($title . $lang_suffix, $dir);
 254  
 255              if ($failable)
 256              {
 257                  $this->response->add_warning_message($title, $description);
 258              }
 259              else
 260              {
 261                  $this->response->add_error_message($title, $description);
 262              }
 263          }
 264      }
 265  
 266      /**
 267       * {@inheritdoc}
 268       */
 269  	static public function get_step_count()
 270      {
 271          return 0;
 272      }
 273  
 274      /**
 275       * {@inheritdoc}
 276       */
 277  	public function get_task_lang_name()
 278      {
 279          return '';
 280      }
 281  }