diff core/lib/Drupal/Core/File/FileSystem.php @ 0:4c8ae668cc8c

Initial import (non-working)

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/core/lib/Drupal/Core/File/FileSystem.php	Wed Nov 29 16:09:58 2017 +0000
@@ -0,0 +1,304 @@
+<?php
+
+namespace Drupal\Core\File;
+
+use Drupal\Core\Site\Settings;
+use Drupal\Core\StreamWrapper\StreamWrapperManagerInterface;
+use Psr\Log\LoggerInterface;
+
+/**
+ * Provides helpers to operate on files and stream wrappers.
+ */
+class FileSystem implements FileSystemInterface {
+
+  /**
+   * Default mode for new directories. See self::chmod().
+   */
+  const CHMOD_DIRECTORY = 0775;
+
+  /**
+   * Default mode for new files. See self::chmod().
+   */
+  const CHMOD_FILE = 0664;
+
+  /**
+   * The site settings.
+   *
+   * @var \Drupal\Core\Site\Settings
+   */
+  protected $settings;
+
+  /**
+   * The file logger channel.
+   *
+   * @var \Psr\Log\LoggerInterface
+   */
+  protected $logger;
+
+  /**
+   * The stream wrapper manager.
+   *
+   * @var \Drupal\Core\StreamWrapper\StreamWrapperManagerInterface
+   */
+  protected $streamWrapperManager;
+
+  /**
+   * Constructs a new FileSystem.
+   *
+   * @param \Drupal\Core\StreamWrapper\StreamWrapperManagerInterface $stream_wrapper_manager
+   *   The stream wrapper manager.
+   * @param \Drupal\Core\Site\Settings $settings
+   *   The site settings.
+   * @param \Psr\Log\LoggerInterface $logger
+   *   The file logger channel.
+   */
+  public function __construct(StreamWrapperManagerInterface $stream_wrapper_manager, Settings $settings, LoggerInterface $logger) {
+    $this->streamWrapperManager = $stream_wrapper_manager;
+    $this->settings = $settings;
+    $this->logger = $logger;
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function moveUploadedFile($filename, $uri) {
+    $result = @move_uploaded_file($filename, $uri);
+    // PHP's move_uploaded_file() does not properly support streams if
+    // open_basedir is enabled so if the move failed, try finding a real path
+    // and retry the move operation.
+    if (!$result) {
+      if ($realpath = $this->realpath($uri)) {
+        $result = move_uploaded_file($filename, $realpath);
+      }
+      else {
+        $result = move_uploaded_file($filename, $uri);
+      }
+    }
+
+    return $result;
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function chmod($uri, $mode = NULL) {
+    if (!isset($mode)) {
+      if (is_dir($uri)) {
+        $mode = $this->settings->get('file_chmod_directory', static::CHMOD_DIRECTORY);
+      }
+      else {
+        $mode = $this->settings->get('file_chmod_file', static::CHMOD_FILE);
+      }
+    }
+
+    if (@chmod($uri, $mode)) {
+      return TRUE;
+    }
+
+    $this->logger->error('The file permissions could not be set on %uri.', ['%uri' => $uri]);
+    return FALSE;
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function unlink($uri, $context = NULL) {
+    $scheme = $this->uriScheme($uri);
+    if (!$this->validScheme($scheme) && (substr(PHP_OS, 0, 3) == 'WIN')) {
+      chmod($uri, 0600);
+    }
+    if ($context) {
+      return unlink($uri, $context);
+    }
+    else {
+      return unlink($uri);
+    }
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function realpath($uri) {
+    // If this URI is a stream, pass it off to the appropriate stream wrapper.
+    // Otherwise, attempt PHP's realpath. This allows use of this method even
+    // for unmanaged files outside of the stream wrapper interface.
+    if ($wrapper = $this->streamWrapperManager->getViaUri($uri)) {
+      return $wrapper->realpath();
+    }
+
+    return realpath($uri);
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function dirname($uri) {
+    $scheme = $this->uriScheme($uri);
+
+    if ($this->validScheme($scheme)) {
+      return $this->streamWrapperManager->getViaScheme($scheme)->dirname($uri);
+    }
+    else {
+      return dirname($uri);
+    }
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function basename($uri, $suffix = NULL) {
+    $separators = '/';
+    if (DIRECTORY_SEPARATOR != '/') {
+      // For Windows OS add special separator.
+      $separators .= DIRECTORY_SEPARATOR;
+    }
+    // Remove right-most slashes when $uri points to directory.
+    $uri = rtrim($uri, $separators);
+    // Returns the trailing part of the $uri starting after one of the directory
+    // separators.
+    $filename = preg_match('@[^' . preg_quote($separators, '@') . ']+$@', $uri, $matches) ? $matches[0] : '';
+    // Cuts off a suffix from the filename.
+    if ($suffix) {
+      $filename = preg_replace('@' . preg_quote($suffix, '@') . '$@', '', $filename);
+    }
+    return $filename;
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function mkdir($uri, $mode = NULL, $recursive = FALSE, $context = NULL) {
+    if (!isset($mode)) {
+      $mode = $this->settings->get('file_chmod_directory', static::CHMOD_DIRECTORY);
+    }
+
+    // If the URI has a scheme, don't override the umask - schemes can handle
+    // this issue in their own implementation.
+    if ($this->uriScheme($uri)) {
+      return $this->mkdirCall($uri, $mode, $recursive, $context);
+    }
+
+    // If recursive, create each missing component of the parent directory
+    // individually and set the mode explicitly to override the umask.
+    if ($recursive) {
+      // Ensure the path is using DIRECTORY_SEPARATOR, and trim off any trailing
+      // slashes because they can throw off the loop when creating the parent
+      // directories.
+      $uri = rtrim(str_replace('/', DIRECTORY_SEPARATOR, $uri), DIRECTORY_SEPARATOR);
+      // Determine the components of the path.
+      $components = explode(DIRECTORY_SEPARATOR, $uri);
+      // If the filepath is absolute the first component will be empty as there
+      // will be nothing before the first slash.
+      if ($components[0] == '') {
+        $recursive_path = DIRECTORY_SEPARATOR;
+        // Get rid of the empty first component.
+        array_shift($components);
+      }
+      else {
+        $recursive_path = '';
+      }
+      // Don't handle the top-level directory in this loop.
+      array_pop($components);
+      // Create each component if necessary.
+      foreach ($components as $component) {
+        $recursive_path .= $component;
+
+        if (!file_exists($recursive_path)) {
+          if (!$this->mkdirCall($recursive_path, $mode, FALSE, $context)) {
+            return FALSE;
+          }
+          // Not necessary to use self::chmod() as there is no scheme.
+          if (!chmod($recursive_path, $mode)) {
+            return FALSE;
+          }
+        }
+
+        $recursive_path .= DIRECTORY_SEPARATOR;
+      }
+    }
+
+    // Do not check if the top-level directory already exists, as this condition
+    // must cause this function to fail.
+    if (!$this->mkdirCall($uri, $mode, FALSE, $context)) {
+      return FALSE;
+    }
+    // Not necessary to use self::chmod() as there is no scheme.
+    return chmod($uri, $mode);
+  }
+
+  /**
+   * Helper function. Ensures we don't pass a NULL as a context resource to
+   * mkdir().
+   *
+   * @see self::mkdir()
+   */
+  protected function mkdirCall($uri, $mode, $recursive, $context) {
+    if (is_null($context)) {
+      return mkdir($uri, $mode, $recursive);
+    }
+    else {
+      return mkdir($uri, $mode, $recursive, $context);
+    }
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function rmdir($uri, $context = NULL) {
+    $scheme = $this->uriScheme($uri);
+    if (!$this->validScheme($scheme) && (substr(PHP_OS, 0, 3) == 'WIN')) {
+      chmod($uri, 0700);
+    }
+    if ($context) {
+      return rmdir($uri, $context);
+    }
+    else {
+      return rmdir($uri);
+    }
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function tempnam($directory, $prefix) {
+    $scheme = $this->uriScheme($directory);
+
+    if ($this->validScheme($scheme)) {
+      $wrapper = $this->streamWrapperManager->getViaScheme($scheme);
+
+      if ($filename = tempnam($wrapper->getDirectoryPath(), $prefix)) {
+        return $scheme . '://' . static::basename($filename);
+      }
+      else {
+        return FALSE;
+      }
+    }
+    else {
+      // Handle as a normal tempnam() call.
+      return tempnam($directory, $prefix);
+    }
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function uriScheme($uri) {
+    if (preg_match('/^([\w\-]+):\/\/|^(data):/', $uri, $matches)) {
+      // The scheme will always be the last element in the matches array.
+      return array_pop($matches);
+    }
+
+    return FALSE;
+  }
+
+  /**
+   * {@inheritdoc}
+   */
+  public function validScheme($scheme) {
+    if (!$scheme) {
+      return FALSE;
+    }
+    return class_exists($this->streamWrapperManager->getClass($scheme));
+  }
+
+}