public function SaveUploadTest::testHandleDangerousFile in Drupal 9

Same name and namespace in other branches

1. 8 core/modules/file/tests/src/Functional/SaveUploadTest.php \Drupal\Tests\file\Functional\SaveUploadTest::testHandleDangerousFile()

Tests dangerous file handling.

File

core/modules/file/tests/src/Functional/SaveUploadTest.php, line 279

Class

SaveUploadTest

Tests the file_save_upload() function.

Namespace

Drupal\Tests\file\Functional

Code

public function testHandleDangerousFile() {
  $config = $this
    ->config('system.file');

  // Allow the .php extension and make sure it gets munged and given a .txt
  // extension for safety. Also check to make sure its MIME type was changed.
  $edit = [
    'file_test_replace' => FileSystemInterface::EXISTS_REPLACE,
    'files[file_test_upload]' => \Drupal::service('file_system')
      ->realpath($this->phpfile->uri),
    'is_image_file' => FALSE,
    'extensions' => 'php txt',
  ];
  $this
    ->drupalGet('file-test/upload');
  $this
    ->submitForm($edit, 'Submit');
  $this
    ->assertSession()
    ->statusCodeEquals(200);
  $this
    ->assertSession()
    ->responseContains('For security reasons, your upload has been renamed to <em class="placeholder">' . $this->phpfile->filename . '_.txt' . '</em>');
  $this
    ->assertSession()
    ->pageTextContains('File name is php-2.php_.txt.');
  $this
    ->assertSession()
    ->pageTextContains('File MIME type is text/plain.');
  $this
    ->assertSession()
    ->pageTextContains("You WIN!");

  // Check that the correct hooks were called.
  $this
    ->assertFileHooksCalled([
    'validate',
    'insert',
  ]);

  // Ensure dangerous files are not renamed when insecure uploads is TRUE.
  // Turn on insecure uploads.
  $config
    ->set('allow_insecure_uploads', 1)
    ->save();

  // Reset the hook counters.
  file_test_reset();
  $this
    ->drupalGet('file-test/upload');
  $this
    ->submitForm($edit, 'Submit');
  $this
    ->assertSession()
    ->statusCodeEquals(200);
  $this
    ->assertSession()
    ->pageTextNotContains('For security reasons, your upload has been renamed');
  $this
    ->assertSession()
    ->pageTextContains('File name is php-2.php.');
  $this
    ->assertSession()
    ->pageTextContains("You WIN!");

  // Check that the correct hooks were called.
  $this
    ->assertFileHooksCalled([
    'validate',
    'insert',
  ]);

  // Reset the hook counters.
  file_test_reset();

  // Even with insecure uploads allowed, the .php file should not be uploaded
  // if it is not explicitly included in the list of allowed extensions.
  $edit['extensions'] = 'foo';
  $this
    ->drupalGet('file-test/upload');
  $this
    ->submitForm($edit, 'Submit');
  $this
    ->assertSession()
    ->statusCodeEquals(200);
  $this
    ->assertSession()
    ->responseContains('Only files with the following extensions are allowed: <em class="placeholder">' . $edit['extensions'] . '</em>');
  $this
    ->assertSession()
    ->pageTextContains("Epic upload FAIL!");

  // Check that the correct hooks were called.
  $this
    ->assertFileHooksCalled([
    'validate',
  ]);

  // Reset the hook counters.
  file_test_reset();

  // Turn off insecure uploads, then try the same thing as above (ensure that
  // the .php file is still rejected since it's not in the list of allowed
  // extensions).
  $config
    ->set('allow_insecure_uploads', 0)
    ->save();
  $this
    ->drupalGet('file-test/upload');
  $this
    ->submitForm($edit, 'Submit');
  $this
    ->assertSession()
    ->statusCodeEquals(200);
  $this
    ->assertSession()
    ->responseContains('Only files with the following extensions are allowed: <em class="placeholder">' . $edit['extensions'] . '</em>');
  $this
    ->assertSession()
    ->pageTextContains("Epic upload FAIL!");

  // Check that the correct hooks were called.
  $this
    ->assertFileHooksCalled([
    'validate',
  ]);

  // Reset the hook counters.
  file_test_reset();
  $edit = [
    'file_test_replace' => FileSystemInterface::EXISTS_REPLACE,
    'files[file_test_upload]' => \Drupal::service('file_system')
      ->realpath($this->phpfile->uri),
    'is_image_file' => FALSE,
    'extensions' => 'php',
  ];
  $this
    ->drupalGet('file-test/upload');
  $this
    ->submitForm($edit, 'Submit');
  $this
    ->assertSession()
    ->statusCodeEquals(200);
  $this
    ->assertSession()
    ->pageTextContains('For security reasons, your upload has been rejected.');
  $this
    ->assertSession()
    ->pageTextContains('Epic upload FAIL!');

  // Check that the correct hooks were called.
  $this
    ->assertFileHooksCalled([
    'validate',
  ]);
}