root/drupal/modules/iutilities/trunk/iutilities.module

<?php
// $Id$

function iutilities_perm() {
        return array('access disk usage information', 'access disk usage settings');
} // function illuminate_perm()

function iutilities_admin() {
        $form['disk_space_limit'] = array(
                '#type' => 'textfield',
                '#title' => t('Maximum space allowed'),
                '#default_value' => variable_get('disk_space_limit', 150),
                '#size' => 5,
                '#maxlength' => 4,
                '#field_suffix' => t('MB'),
                '#description' => t("Each illuminate ict website is permitted a certain amount of space. By default this is 150MB. This can be increased here."),
                '#required' => TRUE,
        );
        return system_settings_form($form);
}

function iutilities_cron() {
        $confpath = conf_path();
        $space_used_string = `du -sm $confpath`;
        $space_used_array = explode("\t", $space_used_string);
        $space_used = (int) trim($space_used_array[0]);
        variable_set('disk_space_used', $space_used);   
}

function iutilities_menu() {
        $items['admin/reports/diskusage'] = array(
                'title' => 'Disk Usage Report',
                'description' => 'Dispay a disk usage report for this website. Includes the space limit for the site.',
                'access arguments' => array('access disk usage information'),
                'page callback' => 'display_diskusage_report',
        );
        $items['admin/settings/diskusage'] = array(
                'title' => 'Set Disk Usage Limit',
                'description' => 'The default 150MB space allowance set by illuminate ICT can be increased here.',
                'access callback' => 'access_disk_usage_settings',
                'access arguments' => array('access disk usage settings'),
                'page callback' => 'drupal_get_form',
                'page arguments' => array(iutilities_admin),
        );
        return $items;
} // illuminate_menu()

function stuff() {
        return "Hello";
}

function access_disk_usage_settings() {
        global $user;
        if ( $user->uid == 1 ) {
                return TRUE;
        } else {
                return FALSE;
        }
}

function display_diskusage_report() {
        $space_used = variable_get('disk_space_used',150);
        $space_limit = variable_get('disk_space_limit',150);
        $space_percentage = ( $space_used / $space_limit ) * 100;
        $output = '<p>Your hosting account with illuminate ICT allows a maximum of <strong>'. $space_limit . 'MB</strong>.</p>';
        $output .= '<p>You are currently using <strong>' . $space_used . 'MB</strong> of your allowance.</p>';
        $output .= '<p>This is <strong>' . $space_percentage . '&#37;</strong> of the available space.</p>';
        return $output;
}


function iutilities_init() {
  //include necessary css
  global $user;
  if ($user->uid > 0) {
    $path = drupal_get_path('module', 'illuminate');
    drupal_add_css($path . '/iutilities.css', 'module', 'all', FALSE);
  }
}

function iutilities_footer($main=0) {
  //output footer message
  global $user;

  $siteDir =   "sites/" . $_SERVER[SERVER_NAME];
  $path = drupal_get_path('module', 'illuminate');
  //footer message is available for all users
  if ($user->uid == 0) {
    $loginLink = '<a href="/user/login">[login]</a>';
  } else {
    $loginLink = '<a href="/logout">[logout]</a>';
  }
  $illuminateStuff =  $loginLink . ' <br/>Website developed in association with <a href="http://www.illuminateict.org.uk">Illuminate ICT</a>';
  
  return $illuminateStuff;
}