function FileSaveUploadTest::testHandleFileMunge

Test file munge handling.

File

core/modules/simpletest/tests/file.test, line 787

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

Class

FileSaveUploadTest

Test the file_save_upload() function.

Code

function testHandleFileMunge() {
  $original_image_uri = $this->image->uri;
  $this->image = file_move($this->image, $this->image->uri . '.foo.' . $this->image_extension);

  // Reset the hook counters.
  file_test_reset();

  // Ensure we don't munge the .foo extension if it is in the list of allowed
  // extensions.
  $extensions = 'foo ' . $this->image_extension;
  $edit = array(
    'files[file_test_upload]' => backdrop_realpath($this->image->uri),
    'extensions' => $extensions,
  );

  $this->backdropPost('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' => 'image-test.png.foo.png')), 'File was not munged when all extensions within it are allowed.');
  $this->assertRaw(t('You WIN!'), 'Found the success message.');

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

  // Check again with the foo file extension not allowed.
  $extensions = $this->image_extension;
  $edit = array(
    'files[file_test_upload]' => backdrop_realpath($this->image->uri),
    'extensions' => $extensions,
  );

  $munged_filename = $this->image->filename;
  $munged_filename = substr($munged_filename, 0, strrpos($munged_filename, '.'));
  $munged_filename .= '_.' . $this->image_extension;

  $this->backdropPost('file-test/upload', $edit, t('Submit'));
  $this->assertResponse(200, 'Received a 200 response for posted test file.');
  $this->assertRaw(t('For security reasons, your upload has been renamed'), 'Found security message.');
  $this->assertRaw(t('File name is !filename', array('!filename' => $munged_filename)), 'File was successfully munged.');
  $this->assertRaw(t('You WIN!'), 'Found the success message.');

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

  // Ensure we don't munge files if we're allowing any extension.
  // Reset the hook counters.
  file_test_reset();

  $edit = array(
    'files[file_test_upload]' => backdrop_realpath($this->image->uri),
    'allow_all_extensions' => 'empty_array',
  );

  $this->backdropPost('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->image->filename)), 'File was not munged when allowing any extension.');
  $this->assertRaw(t('You WIN!'), 'Found the success message.');

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

  // Test that a dangerous extension such as .php is munged even if it is in
  // the list of allowed extensions.
  $this->image = file_move($this->image, $original_image_uri . '.php.' . $this->image_extension);
  // Reset the hook counters.
  file_test_reset();

  $extensions = 'php ' . $this->image_extension;
  $edit = array(
    'files[file_test_upload]' => backdrop_realpath($this->image->uri),
    'extensions' => $extensions,
  );

  $munged_filename = $this->image->filename;
  $munged_filename = substr($munged_filename, 0, strrpos($munged_filename, '.'));
  $munged_filename .= '_.' . $this->image_extension;

  $this->backdropPost('file-test/upload', $edit, t('Submit'));
  $this->assertResponse(200, 'Received a 200 response for posted test file.');
  $this->assertRaw(t('For security reasons, your upload has been renamed'), 'Found security message.');
  $this->assertRaw(t('File name is @filename', array('@filename' => $munged_filename)), 'File was successfully munged.');
  $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();

  // Dangerous extensions are munged even when all extensions are allowed.
  $edit = array(
    'files[file_test_upload]' => backdrop_realpath($this->image->uri),
    'allow_all_extensions' => 'empty_array',
  );

  $munged_filename = $this->image->filename;
  $munged_filename = substr($munged_filename, 0, strrpos($munged_filename, '.'));
  $munged_filename .= '_.' . $this->image_extension;

  $this->backdropPost('file-test/upload', $edit, t('Submit'));
  $this->assertResponse(200, 'Received a 200 response for posted test file.');
  $this->assertRaw(t('For security reasons, your upload has been renamed'), 'Found security message.');
  $this->assertRaw(t('File name is @filename.', array('@filename' => 'image-test.png_.php_.png_.txt')), 'File was successfully munged.');
  $this->assertRaw(t('You WIN!'), 'Found the success message.');

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

  // Dangerous extensions are munged if is renamed to end in .txt.
  $this->image = file_move($this->image, $original_image_uri . '.cgi.' . $this->image_extension . '.txt');
  // Reset the hook counters.
  file_test_reset();

  $edit = array(
    'files[file_test_upload]' => backdrop_realpath($this->image->uri),
    'allow_all_extensions' => 'empty_array',
  );

  $munged_filename = $this->image->filename;
  $munged_filename = substr($munged_filename, 0, strrpos($munged_filename, '.'));
  $munged_filename .= '_.' . $this->image_extension;

  $this->backdropPost('file-test/upload', $edit, t('Submit'));
  $this->assertResponse(200, 'Received a 200 response for posted test file.');
  $this->assertRaw(t('For security reasons, your upload has been renamed'), 'Found security message.');
  $this->assertRaw(t('File name is @filename.', array('@filename' => 'image-test.png_.cgi_.png_.txt')), 'File was successfully munged.');
  $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();

  // Ensure that setting $validators['file_validate_extensions'] = array('')
  // rejects all files without munging or renaming.
  $edit = array(
    'files[file_test_upload]' => backdrop_realpath($this->image->uri),
    'allow_all_extensions' => 'empty_string',
  );

  $this->backdropPost('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 security message.');
  $this->assertRaw(t('Epic upload FAIL!'), 'Found the failure message.');

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