blocks/mnet_hosts/block_mnet_hosts.php

   1 <?php
   2
   3 class block_mnet_hosts extends block_list {
   4     function init() {
   5         $this->title = get_string('pluginname','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 $CFG, $USER, $DB, $OUTPUT;
  23
  24         // shortcut -  only for logged in users!
  25         if (!isloggedin() || isguestuser()) {
  26             return false;
  27         }
  28
  29         // according to start_jump_session,
  30         // remote users can't on-jump
  31         // so don't show this block to them
  32         if (is_mnet_remote_user($USER)) {
  33             return '';
  34         }
  35
  36         if (!is_enabled_auth('mnet')) {
  37             // no need to query anything remote related
  38             debugging( 'mnet authentication plugin is not enabled', DEBUG_ALL );
  39             return '';
  40         }
  41
  42         // check for outgoing roaming permission first
  43         if (!has_capability('moodle/site:mnetlogintoremote', get_context_instance(CONTEXT_SYSTEM), NULL, false)) {
  44             return '';
  45         }
  46
  47         if ($this->content !== NULL) {
  48             return $this->content;
  49         }
  50
  51         // TODO: Test this query - it's appropriate? It works?
  52         // get the hosts and whether we are doing SSO with them
  53         $sql = "
  54              SELECT DISTINCT
  55                  h.id,
  56                  h.name,
  57                  h.wwwroot,
  58                  a.name as application,
  59                  a.display_name
  60              FROM
  61                  {mnet_host} h,
  62                  {mnet_application} a,
  63                  {mnet_host2service} h2s_IDP,
  64                  {mnet_service} s_IDP,
  65                  {mnet_host2service} h2s_SP,
  66                  {mnet_service} s_SP
  67              WHERE
  68                  h.id <> ? AND
  69                  h.id = h2s_IDP.hostid AND
  70                  h.deleted = 0 AND
  71                  h.applicationid = a.id AND
  72                  h2s_IDP.serviceid = s_IDP.id AND
  73                  s_IDP.name = 'sso_idp' AND
  74                  h2s_IDP.publish = '1' AND
  75                  h.id = h2s_SP.hostid AND
  76                  h2s_SP.serviceid = s_SP.id AND
  77                  s_SP.name = 'sso_idp' AND
  78                  h2s_SP.publish = '1'
  79              ORDER BY
  80                  a.display_name,
  81                  h.name";
  82
  83         $hosts = $DB->get_records_sql($sql, array($CFG->mnet_localhost_id));
  84
  85         $this->content = new stdClass;
  86         $this->content->items = array();
  87         $this->content->icons = array();
  88         $this->content->footer = '';
  89
  90         if ($hosts) {
  91             foreach ($hosts as $host) {
  92             $icon  = '<img src="'.$OUTPUT->pix_url('i/'.$host->application.'_host') . '"'.
  93                 ' class="icon" alt="'.get_string('server', 'block_mnet_hosts').'" />';
  94
  95                 $this->content->icons[]=$icon;
  96                 if ($host->id == $USER->mnethostid) {
  97                     $this->content->items[]="<a title=\"" .s($host->name).
  98                         "\" href=\"{$host->wwwroot}\">". s($host->name) ."</a>";
  99                 } else {
 100                     $this->content->items[]="<a title=\"" .s($host->name).
 101                         "\" href=\"{$CFG->wwwroot}/auth/mnet/jump.php?hostid={$host->id}\">" . s($host->name) ."</a>";
 102                 }
 103             }
 104         }
 105
 106         return $this->content;
 107     }
 108 }
 109
 110