blocks/mnet_hosts/block_mnet_hosts.php

   1 <?PHP //$Id$
   2
   3 class block_mnet_hosts extends block_list {
   4     function init() {
   5         $this->title = get_string('mnet_hosts','block_mnet_hosts') ;
   6         $this->version = 2007101509;
   7     }
   8
   9     function has_config() {
  10         return false;
  11     }
  12
  13     function applicable_formats() {
  14         if (has_capability('moodle/site:mnetlogintoremote', get_context_instance(CONTEXT_SYSTEM), NULL, false)) {
  15             return array('all' => true, 'mod' => false, 'tag' => false);
  16         } else {
  17             return array('site' => true);
  18         }
  19     }
  20
  21     function get_content() {
  22         global $THEME, $CFG, $USER;
  23
  24         // only for logged in users!
  25         if (!isloggedin() || isguest()) {
  26             return false;
  27         }
  28
  29         if (!is_enabled_auth('mnet')) {
  30             // no need to query anything remote related
  31             debugging( 'mnet authentication plugin is not enabled', DEBUG_ALL );
  32             return '';
  33         }
  34
  35         // check for outgoing roaming permission first
  36         if (!has_capability('moodle/site:mnetlogintoremote', get_context_instance(CONTEXT_SYSTEM), NULL, false)) {
  37             return '';
  38         }
  39
  40         if ($this->content !== NULL) {
  41             return $this->content;
  42         }
  43
  44         // TODO: Test this query - it's appropriate? It works?
  45         // get the hosts and whether we are doing SSO with them
  46         $sql = "
  47              SELECT DISTINCT
  48                  h.id,
  49                  h.name,
  50                  h.wwwroot,
  51                  a.name as application,
  52                  a.display_name
  53              FROM
  54                  {$CFG->prefix}mnet_host h,
  55                  {$CFG->prefix}mnet_application a,
  56                  {$CFG->prefix}mnet_host2service h2s_IDP,
  57                  {$CFG->prefix}mnet_service s_IDP,
  58                  {$CFG->prefix}mnet_host2service h2s_SP,
  59                  {$CFG->prefix}mnet_service s_SP
  60              WHERE
  61                  h.id != '{$CFG->mnet_localhost_id}' AND
  62                  h.id = h2s_IDP.hostid AND
  63                  h.applicationid = a.id AND
  64                  h2s_IDP.serviceid = s_IDP.id AND
  65                  s_IDP.name = 'sso_idp' AND
  66                  h2s_IDP.publish = '1' AND
  67                  h.id = h2s_SP.hostid AND
  68                  h2s_SP.serviceid = s_SP.id AND
  69                  s_SP.name = 'sso_idp' AND
  70                  h2s_SP.publish = '1'
  71              ORDER BY
  72                  a.display_name,
  73                  h.name";
  74
  75         $hosts = get_records_sql($sql);
  76
  77         $this->content = new stdClass;
  78         $this->content->items = array();
  79         $this->content->icons = array();
  80         $this->content->footer = '';
  81
  82         if ($hosts) {
  83             foreach ($hosts as $host) {
  84             $icon  = '<img src="'.$CFG->pixpath.'/i/'.$host->application.'_host.gif"'.
  85                 ' class="icon" alt="'.get_string('server', 'block_mnet_hosts').'" />';
  86
  87                 $this->content->icons[]=$icon;
  88                 if ($host->id == $USER->mnethostid) {
  89                     $this->content->items[]="<a title=\"" .s($host->name).
  90                         "\" href=\"{$host->wwwroot}\">". s($host->name) ."</a>";
  91                 } else {
  92                     $this->content->items[]="<a title=\"" .s($host->name).
  93                         "\" href=\"{$CFG->wwwroot}/auth/mnet/jump.php?hostid={$host->id}\">" . s($host->name) ."</a>";
  94                 }
  95             }
  96         }
  97
  98         return $this->content;
  99     }
 100 }
 101
 102 ?>