function FileSaveUploadTest::testHandleDangerousFile in Drupal 7

Test dangerous file handling.

File

modules/simpletest/tests/file.test, line 744

This provides SimpleTests for the core file handling functionality. These include FileValidateTest and FileSaveTest.

Class

FileSaveUploadTest

Test the file_save_upload() function.

Code

function testHandleDangerousFile() {

  // 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.
  $edit = array(
    'file_test_replace' => FILE_EXISTS_REPLACE,
    'files[file_test_upload]' => drupal_realpath($this->phpfile->uri),
    'is_image_file' => FALSE,
    'extensions' => 'php',
  );
  $this
    ->drupalPost('file-test/upload', $edit, t('Submit'));
  $this
    ->assertResponse(200, 'Received a 200 response for posted test file.');
  $message = t('For security reasons, your upload has been renamed to') . ' <em class="placeholder">' . $this->phpfile->filename . '_.txt' . '</em>';
  $this
    ->assertRaw($message, 'Dangerous file was renamed.');
  $this
    ->assertRaw('File name is php-2.php_.txt.');
  $this
    ->assertRaw(t('File MIME type is text/plain.'), "Dangerous file's MIME type was changed.");
  $this
    ->assertRaw(t('You WIN!'), 'Found the success message.');

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

  // Ensure dangerous files are not renamed when insecure uploads is TRUE.
  // Turn on insecure uploads.
  variable_set('allow_insecure_uploads', 1);

  // Reset the hook counters.
  file_test_reset();
  $this
    ->drupalPost('file-test/upload', $edit, t('Submit'));
  $this
    ->assertResponse(200, 'Received a 200 response for posted test file.');
  $this
    ->assertNoRaw(t('For security reasons, your upload has been renamed'), 'Found no security message.');
  $this
    ->assertRaw(t('File name is !filename', array(
    '!filename' => $this->phpfile->filename,
  )), 'Dangerous file was not renamed when insecure uploads is TRUE.');
  $this
    ->assertRaw(t('You WIN!'), 'Found the success message.');

  // Check that the correct hooks were called.
  $this
    ->assertFileHooksCalled(array(
    '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
    ->drupalPost('file-test/upload', $edit, t('Submit'));
  $this
    ->assertResponse(200, 'Received a 200 response for posted test file.');
  $message = t('Only files with the following extensions are allowed:') . ' <em class="placeholder">' . $edit['extensions'] . '</em>';
  $this
    ->assertRaw($message, 'Cannot upload a disallowed extension');
  $this
    ->assertRaw(t('Epic upload FAIL!'), 'Found the failure message.');

  // Check that the correct hooks were called.
  $this
    ->assertFileHooksCalled(array(
    '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).
  variable_set('allow_insecure_uploads', 0);
  $this
    ->drupalPost('file-test/upload', $edit, t('Submit'));
  $this
    ->assertResponse(200, 'Received a 200 response for posted test file.');
  $message = t('Only files with the following extensions are allowed:') . ' <em class="placeholder">' . $edit['extensions'] . '</em>';
  $this
    ->assertRaw($message, 'Cannot upload a disallowed extension');
  $this
    ->assertRaw(t('Epic upload FAIL!'), 'Found the failure message.');

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

  // Reset the hook counters.
  file_test_reset();
}