file.install

<?php


/**
 * @file
 * Install, update and uninstall functions for File module.
 */

/**
 * Implements hook_field_schema().
 */
function file_field_schema($field) {
    return array(
        'columns' => array(
            'fid' => array(
                'description' => 'The {file_managed}.fid being referenced in this field.',
                'type' => 'int',
                'not null' => FALSE,
                'unsigned' => TRUE,
            ),
            'display' => array(
                'description' => 'Flag to control whether this file should be displayed when viewing content.',
                'type' => 'int',
                'size' => 'tiny',
                'unsigned' => TRUE,
                'not null' => TRUE,
                'default' => 1,
            ),
            'description' => array(
                'description' => 'A description of the file.',
                'type' => 'text',
                'not null' => FALSE,
            ),
        ),
        'indexes' => array(
            'fid' => array(
                'fid',
            ),
        ),
        'foreign keys' => array(
            'fid' => array(
                'table' => 'file_managed',
                'columns' => array(
                    'fid' => 'fid',
                ),
            ),
        ),
    );
}

/**
 * Implements hook_requirements().
 *
 * Display information about getting upload progress bars working.
 */
function file_requirements($phase) {
    $requirements = array();
    // Check the server's ability to indicate upload progress.
    if ($phase == 'runtime') {
        $description = NULL;
        $implementation = file_progress_implementation();
        // Test the web server identity.
        $server_software = $_SERVER['SERVER_SOFTWARE'];
        if (preg_match("/Nginx/i", $server_software)) {
            $is_nginx = TRUE;
            $is_apache = FALSE;
            $fastcgi = FALSE;
        }
        elseif (preg_match("/Apache/i", $server_software)) {
            $is_nginx = FALSE;
            $is_apache = TRUE;
            $fastcgi = strpos($server_software, 'mod_fastcgi') !== FALSE || strpos($server_software, 'mod_fcgi') !== FALSE;
        }
        else {
            $is_nginx = FALSE;
            $is_apache = FALSE;
            $fastcgi = FALSE;
        }
        if (!$is_apache && !$is_nginx) {
            $value = t('Not enabled');
            $description = t('Your server is not capable of displaying file upload progress. File upload progress requires an Apache server running PHP with mod_php or Nginx with PHP-FPM.');
            $severity = REQUIREMENT_INFO;
        }
        elseif ($fastcgi) {
            $value = t('Not enabled');
            $description = t('Your server is not capable of displaying file upload progress. File upload progress requires PHP be run with mod_php or PHP-FPM and not as FastCGI.');
            $severity = REQUIREMENT_INFO;
        }
        elseif (!$implementation && extension_loaded('apc')) {
            $value = t('Not enabled');
            $description = t('Your server is capable of displaying file upload progress through APC, but it is not enabled. Add <code>apc.rfc1867 = 1</code> to your php.ini configuration. Alternatively, it is recommended to use <a href="http://pecl.php.net/package/uploadprogress">PECL uploadprogress</a>, which supports more than one simultaneous upload.');
            $severity = REQUIREMENT_INFO;
        }
        elseif (!$implementation) {
            $value = t('Not enabled');
            $description = t('Your server is capable of displaying file upload progress, but does not have the required libraries. It is recommended to install the <a href="http://pecl.php.net/package/uploadprogress">PECL uploadprogress library</a> (preferred) or to install <a href="http://us2.php.net/apc">APC</a>.');
            $severity = REQUIREMENT_INFO;
        }
        elseif ($implementation == 'apc') {
            $value = t('Enabled (<a href="http://php.net/manual/en/apc.configuration.php#ini.apc.rfc1867">APC RFC1867</a>)');
            $description = t('Your server is capable of displaying file upload progress using APC RFC1867. Note that only one upload at a time is supported. It is recommended to use the <a href="http://pecl.php.net/package/uploadprogress">PECL uploadprogress library</a> if possible.');
            $severity = REQUIREMENT_OK;
        }
        elseif ($implementation == 'uploadprogress') {
            $value = t('Enabled (<a href="http://pecl.php.net/package/uploadprogress">PECL uploadprogress</a>)');
            $severity = REQUIREMENT_OK;
        }
        $requirements['file_progress'] = array(
            'title' => t('Upload progress'),
            'value' => $value,
            'severity' => $severity,
            'description' => $description,
        );
    }
    return $requirements;
}