update.install

<?php


/**
 * @file
 * Install, update, and uninstall functions for the Update Manager module.
 */

/**
 * Implements hook_requirements().
 *
 * @return
 *   An array describing the status of the site regarding available updates. If
 *   there is no update data, only one record will be returned, indicating that
 *   the status of core can't be determined. If data is available, there will be
 *   two records: one for core, and another for all of contrib (assuming there
 *   are any contributed modules or themes enabled on the site). In addition to
 *   the fields expected by hook_requirements ('value', 'severity', and
 *   optionally 'description'), this array will contain a 'reason' attribute,
 *   which is an integer constant to indicate why the given status is being
 *   returned (UPDATE_NOT_SECURE, UPDATE_NOT_CURRENT, or UPDATE_UNKNOWN). This
 *   is used for generating the appropriate e-mail notification messages during
 *   update_cron(), and might be useful for other modules that invoke
 *   update_requirements() to find out if the site is up to date or not.
 *
 * @see _update_message_text()
 * @see _update_cron_notify()
 */
function update_requirements($phase) {
    $requirements = array();
    if ($phase == 'runtime') {
        if ($available = update_get_available(FALSE)) {
            module_load_include('inc', 'update', 'update.compare');
            $data = update_calculate_project_data($available);
            // First, populate the requirements for core:
            $requirements['update_core'] = _update_requirement_check($data['drupal'], 'core');
            // We don't want to check drupal a second time.
            unset($data['drupal']);
            if (!empty($data)) {
                // Now, sort our $data array based on each project's status. The
                // status constants are numbered in the right order of precedence, so
                // we just need to make sure the projects are sorted in ascending
                // order of status, and we can look at the first project we find.
                uasort($data, '_update_project_status_sort');
                $first_project = reset($data);
                $requirements['update_contrib'] = _update_requirement_check($first_project, 'contrib');
            }
        }
        else {
            $requirements['update_core']['title'] = t('Drupal core update status');
            $requirements['update_core']['value'] = t('No update data available');
            $requirements['update_core']['severity'] = REQUIREMENT_WARNING;
            $requirements['update_core']['reason'] = UPDATE_UNKNOWN;
            $requirements['update_core']['description'] = _update_no_data();
        }
    }
    return $requirements;
}

/**
 * Implements hook_schema().
 */
function update_schema() {
    $schema['cache_update'] = drupal_get_schema_unprocessed('system', 'cache');
    $schema['cache_update']['description'] = 'Cache table for the Update module to store information about available releases, fetched from central server.';
    return $schema;
}

/**
 * Implements hook_install().
 */
function update_install() {
    $queue = DrupalQueue::get('update_fetch_tasks', TRUE);
    $queue->createQueue();
}

/**
 * Implements hook_uninstall().
 */
function update_uninstall() {
    // Clear any variables that might be in use
    $variables = array(
        'update_check_frequency',
        'update_fetch_url',
        'update_last_check',
        'update_last_email_notification',
        'update_notification_threshold',
        'update_notify_emails',
        'update_max_fetch_attempts',
        'update_max_fetch_time',
    );
    foreach ($variables as $variable) {
        variable_del($variable);
    }
    $queue = DrupalQueue::get('update_fetch_tasks');
    $queue->deleteQueue();
}

/**
 * Fills in the requirements array.
 *
 * This is shared for both core and contrib to generate the right elements in
 * the array for hook_requirements().
 *
 * @param $project
 *   Array of information about the project we're testing as returned by
 *   update_calculate_project_data().
 * @param $type
 *   What kind of project this is ('core' or 'contrib').
 *
 * @return
 *   An array to be included in the nested $requirements array.
 *
 * @see hook_requirements()
 * @see update_requirements()
 * @see update_calculate_project_data()
 */
function _update_requirement_check($project, $type) {
    $requirement = array();
    if ($type == 'core') {
        $requirement['title'] = t('Drupal core update status');
    }
    else {
        $requirement['title'] = t('Module and theme update status');
    }
    $status = $project['status'];
    if ($status != UPDATE_CURRENT) {
        $requirement['reason'] = $status;
        $requirement['description'] = _update_message_text($type, $status, TRUE);
        $requirement['severity'] = REQUIREMENT_ERROR;
    }
    switch ($status) {
        case UPDATE_NOT_SECURE:
            $requirement_label = t('Not secure!');
            break;
        case UPDATE_REVOKED:
            $requirement_label = t('Revoked!');
            break;
        case UPDATE_NOT_SUPPORTED:
            $requirement_label = t('Unsupported release');
            break;
        case UPDATE_NOT_CURRENT:
            $requirement_label = t('Out of date');
            $requirement['severity'] = REQUIREMENT_WARNING;
            break;
        case UPDATE_UNKNOWN:
        case UPDATE_NOT_CHECKED:
        case UPDATE_NOT_FETCHED:
            $requirement_label = isset($project['reason']) ? $project['reason'] : t('Can not determine status');
            $requirement['severity'] = REQUIREMENT_WARNING;
            break;
        default:
            $requirement_label = t('Up to date');
    }
    if ($status != UPDATE_CURRENT && $type == 'core' && isset($project['recommended'])) {
        $requirement_label .= ' ' . t('(version @version available)', array(
            '@version' => $project['recommended'],
        ));
    }
    $requirement['value'] = l($requirement_label, update_manager_access() ? 'admin/reports/updates/update' : 'admin/reports/updates');
    return $requirement;
}

/**
 * @addtogroup updates-6.x-to-7.x
 * @{
 */

/**
 * Create a queue to store tasks for requests to fetch available update data.
 */
function update_update_7000() {
    module_load_include('inc', 'system', 'system.queue');
    $queue = DrupalQueue::get('update_fetch_tasks');
    $queue->createQueue();
}

/**
 * Recreates cache_update table.
 *
 * Converts fields that hold serialized variables from text to blob.
 * Removes 'headers' column.
 */
function update_update_7001() {
    $schema = system_schema_cache_7054();
    db_drop_table('cache_update');
    db_create_table('cache_update', $schema);
}

/**
 * @} End of "addtogroup updates-6.x-to-7.x".
 */