function update_manager_install_form_submit in Drupal 7

Form submission handler for update_manager_install_form().

Either downloads the file specified in the URL to a temporary cache, or uploads the file attached to the form, then attempts to extract the archive into a temporary location and verify it. Instantiate the appropriate Updater class for this project and make sure it is not already installed in the live webroot. If everything is successful, setup an operation to run via authorize.php which will copy the extracted files from the temporary location into the live site.

See also

update_manager_install_form_validate()

update_authorize_run_install()

system_authorized_init()

system_authorized_get_url()

Related topics

File

modules/update/update.manager.inc, line 641

Administrative screens and processing functions of the Update Manager module.

Code

function update_manager_install_form_submit($form, &$form_state) {
  if ($form_state['values']['project_url']) {
    $field = 'project_url';
    $local_cache = update_manager_file_get($form_state['values']['project_url']);
    if (!$local_cache) {
      form_set_error($field, t('Unable to retrieve Drupal project from %url.', array(
        '%url' => $form_state['values']['project_url'],
      )));
      return;
    }
  }
  elseif ($_FILES['files']['name']['project_upload']) {
    $validators = array(
      'file_validate_extensions' => array(
        archiver_get_extensions(),
      ),
    );
    $field = 'project_upload';
    if (!($finfo = file_save_upload($field, $validators, NULL, FILE_EXISTS_REPLACE))) {

      // Failed to upload the file. file_save_upload() calls form_set_error() on
      // failure.
      return;
    }
    $local_cache = $finfo->uri;
  }
  $directory = _update_manager_extract_directory();
  try {
    $archive = update_manager_archive_extract($local_cache, $directory);
  } catch (Exception $e) {
    form_set_error($field, $e
      ->getMessage());
    return;
  }
  $files = $archive
    ->listContents();
  if (!$files) {
    form_set_error($field, t('Provided archive contains no files.'));
    return;
  }

  // Unfortunately, we can only use the directory name to determine the project
  // name. Some archivers list the first file as the directory (i.e., MODULE/)
  // and others list an actual file (i.e., MODULE/README.TXT).
  $project = strtok($files[0], '/\\');
  $archive_errors = update_manager_archive_verify($project, $local_cache, $directory);
  if (!empty($archive_errors)) {
    form_set_error($field, array_shift($archive_errors));

    // @todo: Fix me in D8: We need a way to set multiple errors on the same
    // form element and have all of them appear!
    if (!empty($archive_errors)) {
      foreach ($archive_errors as $error) {
        drupal_set_message($error, 'error');
      }
    }
    return;
  }

  // Make sure the Updater registry is loaded.
  drupal_get_updaters();
  $project_location = $directory . '/' . $project;
  try {
    $updater = Updater::factory($project_location);
  } catch (Exception $e) {
    form_set_error($field, $e
      ->getMessage());
    return;
  }
  try {
    $project_title = Updater::getProjectTitle($project_location);
  } catch (Exception $e) {
    form_set_error($field, $e
      ->getMessage());
    return;
  }
  if (!$project_title) {
    form_set_error($field, t('Unable to determine %project name.', array(
      '%project' => $project,
    )));
  }
  if ($updater
    ->isInstalled()) {
    form_set_error($field, t('%project is already installed.', array(
      '%project' => $project_title,
    )));
    return;
  }
  $project_real_location = drupal_realpath($project_location);
  $arguments = array(
    'project' => $project,
    'updater_name' => get_class($updater),
    'local_url' => $project_real_location,
  );

  // If the owner of the directory we extracted is the same as the
  // owner of our configuration directory (e.g. sites/default) where we're
  // trying to install the code, there's no need to prompt for FTP/SSH
  // credentials. Instead, we instantiate a FileTransferLocal and invoke
  // update_authorize_run_install() directly.
  if (fileowner($project_real_location) == fileowner(conf_path())) {
    module_load_include('inc', 'update', 'update.authorize');
    $filetransfer = new FileTransferLocal(DRUPAL_ROOT);
    call_user_func_array('update_authorize_run_install', array_merge(array(
      $filetransfer,
    ), $arguments));
  }
  else {
    system_authorized_init('update_authorize_run_install', drupal_get_path('module', 'update') . '/update.authorize.inc', $arguments, t('Update manager'));
    $form_state['redirect'] = system_authorized_get_url();
  }
}