admin/admin.php

   1 <?PHP // $Id$
   2       // Admin-only script to assign administrative rights to users
   3
   4     require_once('../config.php');
   5
   6     define("MAX_USERS_PER_PAGE", 50);
   7
   8     if (! $site = get_site()) {
   9         redirect("$CFG->wwwroot/$CFG->admin/index.php");
  10     }
  11
  12     require_login();
  13
  14     if (!isadmin()) {
  15         error("You must be an administrator to use this page.");
  16     }
  17
  18     if (!confirm_sesskey()) {
  19         error(get_string('confirmsesskeybad', 'error'));
  20     }
  21
  22     $primaryadmin = get_admin();
  23
  24 /// If you want any administrator to have the ability to assign admin
  25 /// rights, then comment out the following if statement
  26     if ($primaryadmin->id != $USER->id) {
  27         error("You must be the primary administrator to use this page.");
  28     }
  29
  30 /// assign all of the configurable language strings
  31     $stringstoload = array (
  32         "assignadmins",
  33         "administration",
  34         "existingadmins",
  35         "potentialadmins",
  36         "search",
  37         "users",
  38         "searchresults",
  39         "showall"
  40         );
  41
  42     foreach ($stringstoload as $stringtoload){
  43         $strstringtoload = "str" . $stringtoload;
  44         $$strstringtoload = get_string($stringtoload);
  45     }
  46
  47     print_header("$site->shortname: $strassignadmins",
  48                  "$site->fullname",
  49                  "<a href=\"index.php\">$stradministration</a> -> <a href=\"users.php\">$strusers</a> -> $strassignadmins", "adminform.searchtext");
  50
  51
  52     if (!$frm = data_submitted()) {
  53         print_simple_box("<center>".get_string("adminhelpassignadmins")."</center>", "center", "50%");
  54
  55 /// A form was submitted so process the input
  56
  57     } else {
  58         if (!empty($frm->add) and !empty($frm->addselect)) {
  59             foreach ($frm->addselect as $addadmin) {
  60                 if (! add_admin($addadmin)) {
  61                     error("Could not add admin with user id $addadmin!");
  62                 }
  63             }
  64         } else if (!empty($frm->remove) and !empty($frm->removeselect)) {
  65             $admins = get_admins();
  66             if (count($admins) > count($frm->removeselect)) {
  67                 foreach ($frm->removeselect as $removeadmin) {
  68                     if (! remove_admin($removeadmin)) {
  69                         error("Could not remove admin with user id $removeadmin!");
  70                     }
  71                 }
  72             }
  73         } else if (!empty($frm->showall)) {
  74             unset($frm->searchtext);
  75             $frm->previoussearch = 0;
  76         }
  77     }
  78
  79 /// Is there a current search?
  80     $previoussearch = (!empty($frm->search) or ($frm->previoussearch == 1)) ;
  81
  82 /// Get all existing admins
  83     $admins = get_admins();
  84
  85
  86     $adminarray = array();
  87     foreach ($admins as $admin) {
  88         $adminarray[] = $admin->id;
  89     }
  90     $adminlist = implode(',', $adminarray);
  91
  92     unset($adminarray);
  93
  94
  95 /// Get search results excluding any current admins
  96     if (!empty($frm->searchtext) and $previoussearch) {
  97         $searchusers = get_users(true, $frm->searchtext, true, $adminlist, 'firstname ASC, lastname ASC',
  98                                       '', '', 0, 99999, 'id, firstname, lastname, email');
  99         $usercount = get_users(false, '', true, $adminlist);
 100     }
 101
 102 /// If no search results then get potential users excluding current admins
 103     if (empty($searchusers)) {
 104
 105         $usercount =  get_users(false, '', true, $adminlist, 'firstname ASC, lastname ASC', '', '',
 106                                 0, 99999, 'id, firstname, lastname, email');
 107
 108         $users = array();
 109
 110         if ($usercount <= MAX_USERS_PER_PAGE) {
 111             if (!$users = get_users(true, '', true, $adminlist, 'firstname ASC, lastname ASC', '', '',
 112                                0, 99999, 'id, firstname, lastname, email') ) {
 113                 $users = array();
 114             }
 115         }
 116     }
 117
 118     $searchtext = (isset($frm->searchtext)) ? $frm->searchtext : "";
 119     $previoussearch = ($previoussearch) ? '1' : '0';
 120
 121     include('./admin.html');
 122
 123     print_footer();
 124
 125 ?>