function CreateFromLTIMembership($member)
{
$user_id = $member->getID(BasicLTI_Tool_Provider::ID_SCOPE_GLOBAL);
$values = GetPluginSettings();
$userprovision = $values['userprovision'];
// Does user exist
$user = CheckLTIUser($user_id);
if ((is_null($user) || empty($user)) && $userprovision) {
$fullname = $member->fullname;
$email = $member->email;
if (empty($email)) {
$email = '*****@*****.**';
}
$password = random_string(10);
$guid = register_user($user_id, $password, $fullname, $email, True, 0, '');
if (!$guid) {
return null;
}
$user = get_entity($guid);
$user->enable();
$user->consumer_key = $member->context->consumer_instance->guid;
$user->context_id = $member->context->id;
$user->save();
}
return $user;
}
function ProvisionLTIGroup($tool_provider)
{
// Get status of group provisining
$values = GetPluginSettings();
$groupprovision = $values['groupprovision'];
$groupname = $tool_provider->context->title;
// Get context_id and consumer_key for primary context
$context_id = $tool_provider->context->id;
$consumer_key = $tool_provider->context->consumer_instance->consumer_guid;
$user_id = $tool_provider->user->getID(BasicLTI_Tool_Provider::ID_SCOPE_GLOBAL);
// Check if we are dealing with an unapproved share. If so return
// to consumer with suitable message
if (!empty($tool_provider->user->context->share_approved) && !$tool_provider->user->context->share_approved) {
$urlencode = urlencode(sprintf(elgg_echo('LTI:error:sharing'), elgg_get_config('sitename')));
forward($tool_provider->return_url . '<i_msg=' . $urlencode);
return false;
}
// Get user
$user = CheckLTIUser($user_id);
$user_guid = $user->getGUID();
$_SESSION['lti_logger_id'] = $user->getGUID();
$staff = $tool_provider->user->isStaff();
// Check that groups are present and provisioning is on
if (elgg_is_active_plugin('groups') && $groupprovision) {
$group = CheckLTIGroup($groupname, $context_id, $consumer_key);
// Only staff can create groups.
if ($staff && is_null($group)) {
$group = CreateLTIGroup($user, $groupname, $context_id, $consumer_key);
// Ensure that the owner is instructor as simpifies matters
add_entity_relationship($user_guid, 'instructor', $group->getGUID());
system_message(elgg_echo('LTI:info:newgroup'));
forward($group->getURL());
}
if (is_null($group)) {
system_messages(elgg_echo('LTI:info:nogroup'));
forward();
}
$group_guid = $group->getGUID();
$_SESSION['lti_group_id'] = $group->getGUID();
// Is this user a member of the group
if ($group->isMember($user)) {
// If user used to be instructor but is now student remove 'instructor' relationship
if ($tool_provider->user->isLearner() && check_entity_relationship($user_guid, 'instructor', $group_guid)) {
remove_entity_relationship($user_guid, 'instructor', $group->getGUID());
system_messages(elgg_echo('LTI:change:downgrade'));
forward($group->getURL());
}
// If user is staff add instructor relationship unless they are group owner
if ($staff && !check_entity_relationship($user_guid, 'instructor', $group_guid) && $user_guid != $group_guid) {
add_entity_relationship($user_guid, 'instructor', $group_guid);
system_messages(elgg_echo('LTI:change:upgrade'));
forward($group->getURL());
}
system_messages('Forwarded to Group');
forward($group->getURL());
}
// If not member join
$group->join($user);
// If instructor but not owner give instructor relationship to group. This makes
// other consumer instructors able to edit the group in Elgg
if ($staff && !check_entity_relationship($user_guid, 'instructor', $group_guid)) {
add_entity_relationship($user_guid, 'instructor', $group_guid);
system_messages(elgg_echo('LTI:change:upgrade'));
forward($group->getURL());
}
system_messages('Forwarded to Group');
forward($group->getURL());
}
}
<?php
/*------------------------------------------------------------------
* Elgg LTI
*
* This is called when a sync (membership) operation is performed.
* This works out the added, deleted and changed when called. The
* results are stored in session variables to avoid recaluating when
* the added, deleted and changed tabs are clicked.
------------------------------------------------------------------*/
elgg_set_context('groups');
// Must be logged in to use this page
gatekeeper();
// Get plugin settings
$values = GetPluginSettings();
$userprovision = $values['userprovision'];
$instructorupdate = $values['allowinstructor'];
$testmode = $values['testmode'];
// Get group details
$group_guid = (int) get_input('group_guid');
$group = get_entity($group_guid);
set_page_owner($group_guid);
// Update synchronisation time
$contexts = array();
// Get logged in user
$cur_user = elgg_get_logged_in_user_entity();
$consumer_instance = new LTI_Tool_Consumer_Instance($cur_user->consumer_key, elgg_get_config('dbprefix'));
$context = new LTI_Context($consumer_instance, $cur_user->context_id);
// Add this context as must be used
$contexts[] = $context;
if ($cur_user->consumer_key == $group->consumer_key) {
function LTI_pagesetup()
{
$page_owner = elgg_get_page_owner_entity();
// Add administrator's menu items
if (elgg_get_context() == 'admin' && elgg_is_admin_logged_in()) {
/* elgg_register_menu_item('page', array(
'name' => elgg_echo('LTI:registered'),
'text' => elgg_echo('LTI:registered'),
'href' => "blti/displayconsumers",
'title' => elgg_echo('LTI:registered'),
)); */
}
// Group submenu: add the option to Sync Users
$user = elgg_get_logged_in_user_entity();
if ($page_owner instanceof ElggGroup && elgg_get_context() == 'groups') {
// LTI plugin must be enabled, Group must be LTI and current user must be instructor from module
// Also need to add check that extensions are enabled for this consumer. Finally check that instructor
// can create/update
// Get status of instructors for create/update users
$values = GetPluginSettings();
$allowinstructor = $values['allowinstructor'];
// Get context to allow check that membership servce is available before putting up Sync option.
// Use the user context to ensure we check against consumer they came from
$consumer_instance = new LTI_Tool_Consumer_Instance($user->consumer_key, elgg_get_config('dbprefix'));
$context = new LTI_Context($consumer_instance, $user->context_id);
if (elgg_is_active_plugin(elgg_get_config('ltiname')) && !empty($page_owner->consumer_key) && $context->hasMembershipsService() && check_entity_relationship($user->getGUID(), 'instructor', $page_owner->getGUID()) && $allowinstructor) {
//$page_owner->consumer_key;
add_submenu_item(sprintf(elgg_echo('LTI:sync')), elgg_get_config('wwwroot') . elgg_get_config('ltiname') . '/synctext/' . $page_owner->getGUID());
}
// Only display sharing options to instructors from primary context
if (elgg_is_active_plugin(elgg_get_config('ltiname')) && !empty($page_owner->consumer_key) && $page_owner->consumer_key == $user->consumer_key && check_entity_relationship($user->getGUID(), 'instructor', $page_owner->getGUID())) {
add_submenu_item(sprintf(elgg_echo('LTI:share:key')), elgg_get_config('wwwroot') . elgg_get_config('ltiname') . '/sharekey/' . $page_owner->consumer_key . '/' . $page_owner->getGUID() . '/');
add_submenu_item(sprintf(elgg_echo('LTI:share:manage')), elgg_get_config('wwwroot') . elgg_get_config('ltiname') . '/sharemanage/' . $page_owner->consumer_key . '/' . $page_owner->getGUID() . '/');
}
}
}
