PHP install_already_done_error函数代码示例

/**
 * Tasks performed after the database is initialized.
 */
function install_tasks($profile, $task)
{
    global $base_url, $install_locale;
    // Bootstrap newly installed Drupal, while preserving existing messages.
    $messages = isset($_SESSION['messages']) ? $_SESSION['messages'] : '';
    drupal_bootstrap(DRUPAL_BOOTSTRAP_FULL);
    $_SESSION['messages'] = $messages;
    // URL used to direct page requests.
    $url = $base_url . '/install.php?locale=' . $install_locale . '&profile=' . $profile;
    // Build a page for final tasks.
    if (empty($task)) {
        variable_set('install_task', 'profile-install');
        $task = 'profile-install';
    }
    // We are using a list of if constructs here to allow for
    // passing from one task to the other in the same request.
    // Install profile modules.
    if ($task == 'profile-install') {
        $modules = variable_get('install_profile_modules', array());
        $files = module_rebuild_cache();
        variable_del('install_profile_modules');
        $operations = array();
        foreach ($modules as $module) {
            $operations[] = array('_install_module_batch', array($module, $files[$module]->info['name']));
        }
        $batch = array('operations' => $operations, 'finished' => '_install_profile_batch_finished', 'title' => st('Installing @drupal', array('@drupal' => drupal_install_profile_name())), 'error_message' => st('The installation has encountered an error.'));
        // Start a batch, switch to 'profile-install-batch' task. We need to
        // set the variable here, because batch_process() redirects.
        variable_set('install_task', 'profile-install-batch');
        batch_set($batch);
        batch_process($url, $url);
    }
    // We are running a batch install of the profile's modules.
    // This might run in multiple HTTP requests, constantly redirecting
    // to the same address, until the batch finished callback is invoked
    // and the task advances to 'locale-initial-import'.
    if ($task == 'profile-install-batch') {
        include_once 'includes/batch.inc';
        $output = _batch_page();
    }
    // Import interface translations for the enabled modules.
    if ($task == 'locale-initial-import') {
        if (!empty($install_locale) && $install_locale != 'en') {
            include_once 'includes/locale.inc';
            // Enable installation language as default site language.
            locale_add_language($install_locale, NULL, NULL, NULL, NULL, NULL, 1, TRUE);
            // Collect files to import for this language.
            $batch = locale_batch_by_language($install_locale, '_install_locale_initial_batch_finished');
            if (!empty($batch)) {
                // Remember components we cover in this batch set.
                variable_set('install_locale_batch_components', $batch['#components']);
                // Start a batch, switch to 'locale-batch' task. We need to
                // set the variable here, because batch_process() redirects.
                variable_set('install_task', 'locale-initial-batch');
                batch_set($batch);
                batch_process($url, $url);
            }
        }
        // Found nothing to import or not foreign language, go to next task.
        $task = 'configure';
    }
    if ($task == 'locale-initial-batch') {
        include_once 'includes/batch.inc';
        include_once 'includes/locale.inc';
        $output = _batch_page();
    }
    if ($task == 'configure') {
        if (variable_get('site_name', FALSE) || variable_get('site_mail', FALSE)) {
            // Site already configured: This should never happen, means re-running
            // the installer, possibly by an attacker after the 'install_task' variable
            // got accidentally blown somewhere. Stop it now.
            install_already_done_error();
        }
        $form = drupal_get_form('install_configure_form', $url);
        if (!variable_get('site_name', FALSE) && !variable_get('site_mail', FALSE)) {
            // Not submitted yet: Prepare to display the form.
            $output = $form;
            drupal_set_title(st('Configure site'));
            // Warn about settings.php permissions risk
            $settings_dir = './' . conf_path();
            $settings_file = $settings_dir . '/settings.php';
            if (!drupal_verify_install_file($settings_file, FILE_EXIST | FILE_READABLE | FILE_NOT_WRITABLE) || !drupal_verify_install_file($settings_dir, FILE_NOT_WRITABLE, 'dir')) {
                drupal_set_message(st('All necessary changes to %dir and %file have been made, so you should remove write permissions to them now in order to avoid security risks. If you are unsure how to do so, please consult the <a href="@handbook_url">on-line handbook</a>.', array('%dir' => $settings_dir, '%file' => $settings_file, '@handbook_url' => 'http://drupal.org/getting-started')), 'error');
            } else {
                drupal_set_message(st('All necessary changes to %dir and %file have been made. They have been set to read-only for security.', array('%dir' => $settings_dir, '%file' => $settings_file)));
            }
            // Add JavaScript validation.
            _user_password_dynamic_validation();
            drupal_add_js(drupal_get_path('module', 'system') . '/system.js', 'module');
            // We add these strings as settings because JavaScript translation does not
            // work on install time.
            drupal_add_js(array('copyFieldValue' => array('edit-site-mail' => array('edit-account-mail')), 'cleanURL' => array('success' => st('Your server has been successfully tested to support this feature.'), 'failure' => st('Your system configuration does not currently support this feature. The <a href="http://drupal.org/node/15365">handbook page on Clean URLs</a> has additional troubleshooting information.'), 'testing' => st('Testing clean URLs...'))), 'setting');
            drupal_add_js('
// Global Killswitch
if (Drupal.jsEnabled) {
  $(document).ready(function() {
    Drupal.cleanURLsInstallCheck();
//.........这里部分代码省略.........

/**
 * Installation task; configure settings for the new site.
 *
 * @param $form_state
 *   An associative array containing the current state of the form.
 * @param $install_state
 *   An array of information about the current installation state.
 * @return
 *   The form API definition for the site configuration form.
 */
function install_configure_form($form, &$form_state, &$install_state)
{
    if (variable_get('site_name', FALSE) || variable_get('site_mail', FALSE)) {
        // Site already configured: This should never happen, means re-running the
        // installer, possibly by an attacker after the 'install_task' variable got
        // accidentally blown somewhere. Stop it now.
        throw new Exception(install_already_done_error());
    }
    drupal_set_title(st('Configure site'));
    // Warn about settings.php permissions risk
    $settings_dir = './' . conf_path();
    $settings_file = $settings_dir . '/settings.php';
    if (!drupal_verify_install_file($settings_file, FILE_EXIST | FILE_READABLE | FILE_NOT_WRITABLE) || !drupal_verify_install_file($settings_dir, FILE_NOT_WRITABLE, 'dir')) {
        drupal_set_message(st('All necessary changes to %dir and %file have been made, so you should remove write permissions to them now in order to avoid security risks. If you are unsure how to do so, consult the <a href="@handbook_url">online handbook</a>.', array('%dir' => $settings_dir, '%file' => $settings_file, '@handbook_url' => 'http://drupal.org/server-permissions')), 'error');
    } else {
        drupal_set_message(st('All necessary changes to %dir and %file have been made. They have been set to read-only for security.', array('%dir' => $settings_dir, '%file' => $settings_file)));
    }
    // Add JavaScript validation.
    _user_password_dynamic_validation();
    drupal_add_js(drupal_get_path('module', 'system') . '/system.js');
    // Add JavaScript time zone detection.
    drupal_add_js('misc/timezone.js');
    // We add these strings as settings because JavaScript translation does not
    // work on install time.
    drupal_add_js(array('copyFieldValue' => array('edit-site-mail' => array('edit-account-mail'))), 'setting');
    drupal_add_js('jQuery(function () { Drupal.cleanURLsInstallCheck(); });', 'inline');
    // Add JS to show / hide the 'Email administrator about site updates' elements
    drupal_add_js('jQuery(function () { Drupal.hideEmailAdministratorCheckbox() });', 'inline');
    // Build menu to allow clean URL check.
    menu_rebuild();
    // Cache a fully-built schema. This is necessary for any invocation of
    // index.php because: (1) setting cache table entries requires schema
    // information, (2) that occurs during bootstrap before any module are
    // loaded, so (3) if there is no cached schema, drupal_get_schema() will
    // try to generate one but with no loaded modules will return nothing.
    //
    // This logically could be done during the 'install_finished' task, but the
    // clean URL check requires it now.
    drupal_get_schema(NULL, TRUE);
    // Return the form.
    return _install_configure_form($form, $form_state, $install_state);
}

/**
 * Configure and rewrite settings.php.
 */
function install_change_settings($profile = 'default', $install_locale = '')
{
    global $db_url, $db_type, $db_prefix;
    $url = parse_url(is_array($db_url) ? $db_url['default'] : $db_url);
    $db_user = urldecode($url['user']);
    $db_pass = urldecode($url['pass']);
    $db_host = urldecode($url['host']);
    $db_port = isset($url['port']) ? urldecode($url['port']) : '';
    $db_path = ltrim(urldecode($url['path']), '/');
    $settings_file = './' . conf_path() . '/settings.php';
    // We always need this because we want to run form_get_errors.
    include_once './includes/form.inc';
    drupal_maintenance_theme();
    // Don't fill in placeholders
    if ($db_url == 'mysql://username:password@localhost/databasename') {
        $db_user = $db_pass = $db_path = '';
    } elseif (!empty($db_url)) {
        // Do not install over a configured settings.php.
        install_already_done_error();
    }
    // The existing database settings are not working, so we need write access
    // to settings.php to change them.
    if (!drupal_verify_install_file($settings_file, FILE_EXIST | FILE_READABLE | FILE_WRITABLE)) {
        drupal_set_message(st('The @drupal installer requires write permissions to %file during the installation process.', array('@drupal' => drupal_install_profile_name(), '%file' => $settings_file)), 'error');
        drupal_set_title(st('Drupal database setup'));
        print theme('install_page', '');
        exit;
    }
    $output = drupal_get_form('install_settings_form', $profile, $install_locale, $settings_file, $db_url, $db_type, $db_prefix, $db_user, $db_pass, $db_host, $db_port, $db_path);
    drupal_set_title(st('Database configuration'));
    print theme('install_page', $output);
    exit;
}

/**
 * The Drupal installation happens in a series of steps. We begin by verifying
 * that the current environment meets our minimum requirements. We then go
 * on to verify that settings.php is properly configured. From there we
 * connect to the configured database and verify that it meets our minimum
 * requirements. Finally we can allow the user to select an installation
 * profile and complete the installation process.
 *
 * @param $phase
 *   The installation phase we should proceed to.
 */
function install_main()
{
    global $profile, $install_locale;
    require_once './includes/bootstrap.inc';
    drupal_bootstrap(DRUPAL_BOOTSTRAP_CONFIGURATION);
    require_once './modules/system/system.install';
    require_once './includes/file.inc';
    // Ensure correct page headers are sent (e.g. caching)
    drupal_page_header();
    // Check existing settings.php.
    $verify = install_verify_settings();
    // Drupal may already be installed.
    if ($verify) {
        // Establish a connection to the database.
        require_once './includes/database.inc';
        db_set_active();
        // Check if Drupal is installed.
        if (install_verify_drupal()) {
            install_already_done_error();
        }
    }
    // Load module basics (needed for hook invokes).
    include_once './includes/module.inc';
    $module_list['system']['filename'] = 'modules/system/system.module';
    $module_list['filter']['filename'] = 'modules/filter/filter.module';
    module_list(TRUE, FALSE, FALSE, $module_list);
    drupal_load('module', 'system');
    drupal_load('module', 'filter');
    // Decide which profile to use.
    if (!empty($_GET['profile'])) {
        $profile = preg_replace('/[^a-zA-Z_0-9]/', '', $_GET['profile']);
    } elseif ($profile = install_select_profile()) {
        install_goto("install.php?profile={$profile}");
    } else {
        install_no_profile_error();
    }
    // Locale selection
    if (!empty($_GET['locale'])) {
        $install_locale = preg_replace('/[^a-zA-Z_0-9]/', '', $_GET['locale']);
    } elseif (($install_locale = install_select_locale($profile)) !== FALSE) {
        install_goto("install.php?profile={$profile}&locale={$install_locale}");
    }
    // Load the profile.
    require_once "./profiles/{$profile}/{$profile}.profile";
    // Check the installation requirements for Drupal and this profile.
    install_check_requirements($profile);
    // Change the settings.php information if verification failed earlier.
    // Note: will trigger a redirect if database credentials change.
    if (!$verify) {
        install_change_settings($profile, $install_locale);
    }
    // Verify existence of all required modules.
    $modules = drupal_verify_profile($profile, $install_locale);
    if (!$modules) {
        install_missing_modules_error($profile);
    }
    // Perform actual installation defined in the profile.
    drupal_install_profile($profile, $modules);
    // Warn about settings.php permissions risk
    $settings_file = './' . conf_path() . '/settings.php';
    if (!drupal_verify_install_file($settings_file, FILE_EXIST | FILE_READABLE | FILE_NOT_WRITABLE)) {
        drupal_set_message(st('All necessary changes to %file have been made, so you should now remove write permissions to this file. Failure to remove write permissions to this file is a security risk.', array('%file' => $settings_file)), 'error');
    } else {
        drupal_set_message(st('All necessary changes to %file have been made. It has been set to read-only for security.', array('%file' => $settings_file)));
    }
    // Show end page.
    install_complete($profile);
}