lti_tool_provider.module in LTI Tool Provider 7
Same filename and directory in other branches
lti_tool_provider hook implementations and support functions.
File
lti_tool_provider.moduleView source
<?php
/**
* @file
* lti_tool_provider hook implementations and support functions.
*/
/**
* Implements hook_library_info().
*/
function lti_tool_provider_libraries_info() {
$libraries['oauth'] = array(
'name' => 'OAuth library',
'vendor url' => 'http://oauth.googlecode.com',
'download url' => 'https://github.com/juampy72/OAuth-PHP',
'version' => '1.0',
// 'version callback' => '_lti_tool_provider_oauth_version',
'files' => array(
'php' => array(
'OAuth.php',
),
),
);
return $libraries;
}
/**
* Implements hook_registry_files_alter().
*/
function lti_tool_provider_registry_files_alter(&$files, $modules) {
drupal_load('module', 'libraries');
$path = libraries_get_path('oauth');
$path = $path . '/OAuth.php';
$files[$path] = array(
'module' => 'lti_tool_provider',
'weight' => 0,
);
}
/**
* Implements hook_help().
*/
function lti_tool_provider_help($path, $arg) {
switch ($path) {
case 'admin/help#lti_tool_provider':
$module_path = drupal_get_path('module', 'lti_tool_provider');
$output = '<p>' . t("Read the !url file in the LTI Tool Provider module directory.", array(
'!url' => l(t('README.txt'), $module_path . '/README.txt'),
)) . '</p>';
$output .= '<p>' . t("Information about LTI Tool Provider can also be found on the module's !docs.", array(
'!docs' => l(t('project page'), 'http://drupal.org/sandbox/jzornig/1809350'),
)) . '</p>';
return $output;
}
}
/**
* Implements hook_permission().
*/
function lti_tool_provider_permission() {
$permissions = array(
'administer lti_tool_provider module' => array(
'title' => t('Administer LTI Tool Provider module'),
'description' => t('Perform administration tasks for the LTI Tool Provider module.'),
),
'view lti info' => array(
'title' => t('View LTI Context Variables'),
),
'access lti_tool_provider_consumer entities' => array(
'title' => t('Access LTI Tool Provider Consumer entities'),
'description' => t('Read/View access for LTI Tool Provider Consumers.'),
),
);
return $permissions;
}
/**
* Implements hook_menu().
*/
function lti_tool_provider_menu() {
$items = array();
$items['admin/config/lti-tool-provider'] = array(
'title' => 'LTI Tool Provider',
'description' => 'Administer the LTI Tool Provider module.',
'page callback' => 'system_admin_menu_block_page',
'access arguments' => array(
'administer lti_tool_provider module',
),
'file' => 'system.admin.inc',
'file path' => drupal_get_path('module', 'system'),
);
$items['admin/config/lti-tool-provider/lti-tool-consumers'] = array(
'title' => 'LTI Tool Consumers',
'description' => 'Administer LTI Tool Consumers.',
'page callback' => 'lti_tool_provider_consumers_admin',
'page arguments' => array(
'lti_tool_provider_settings',
),
'access arguments' => array(
'administer lti_tool_provider module',
),
'file' => 'lti_tool_provider.admin.inc',
'weight' => -7,
);
$items['lti_tool_provider_consumer/%lti_tool_provider_consumer'] = array(
'title' => 'LTI Tool Consumer',
'description' => 'View/Edit/Delete an LTI Tool Consumer.',
'page callback' => 'lti_tool_provider_consumer_view',
'page arguments' => array(
1,
'full',
),
'access callback' => 'lti_tool_provider_consumer_access',
'access arguments' => array(
'view',
1,
),
'file' => 'lti_tool_provider.admin.inc',
'type' => MENU_CALLBACK,
);
$items['lti_tool_provider_consumer/%lti_tool_provider_consumer/view'] = array(
'title' => 'View',
'description' => 'View an LTI Tool Consumer.',
'type' => MENU_DEFAULT_LOCAL_TASK,
'weight' => -10,
);
$items['lti_tool_provider_consumer/%lti_tool_provider_consumer/edit'] = array(
'title' => 'Edit',
'description' => 'Edit an LTI Tool Consumer.',
'page callback' => 'drupal_get_form',
'page arguments' => array(
'lti_tool_provider_consumer_form',
1,
),
'access arguments' => array(
'administer lti_tool_provider module',
),
'type' => MENU_LOCAL_TASK,
'file' => 'lti_tool_provider.admin.inc',
);
$items['lti_tool_provider_consumer/%lti_tool_provider_consumer/delete'] = array(
'title' => 'Delete',
'description' => 'Delete an LTI Tool Consumer.',
'page callback' => 'drupal_get_form',
'page arguments' => array(
'lti_tool_provider_consumer_confirm_delete_form',
1,
),
'access arguments' => array(
'administer lti_tool_provider module',
),
'file' => 'lti_tool_provider.admin.inc',
);
$items['lti_tool_provider_consumer/add'] = array(
'title' => 'Add LTI Consumer',
'description' => 'Add an LTI Tool Consumer.',
'page callback' => 'lti_tool_provider_consumer_add',
'access arguments' => array(
'administer lti_tool_provider module',
),
'file' => 'lti_tool_provider.admin.inc',
'type' => MENU_CALLBACK,
);
$items['admin/config/lti-tool-provider/user-attributes'] = array(
'title' => 'User Attributes',
'description' => 'Configure LTI context to user attribute mapping.',
'page callback' => 'drupal_get_form',
'page arguments' => array(
'lti_tool_provider_user_attributes',
),
'access arguments' => array(
'administer lti_tool_provider module',
),
'file' => 'lti_tool_provider.admin.inc',
'weight' => -6,
);
$items['admin/config/lti-tool-provider/global-roles'] = array(
'title' => 'Global Roles',
'description' => 'Configure LTI context to global role mapping.',
'page callback' => 'drupal_get_form',
'page arguments' => array(
'lti_tool_provider_global_roles',
),
'access arguments' => array(
'administer lti_tool_provider module',
),
'file' => 'lti_tool_provider.admin.inc',
'weight' => -5,
);
$items['admin/config/lti-tool-provider/info'] = array(
'title' => 'View LTI Information',
'description' => 'View all the LTI context variables.',
'page callback' => 'lti_tool_provider_info',
'access callback' => 'lti_tool_provider_context_access',
'access arguments' => array(
'view lti info',
),
'file' => 'lti_tool_provider.operations.inc',
'weight' => -3,
);
$items['lti'] = array(
'title' => 'LTI',
'page callback' => 'lti_tool_provider_launch',
'access callback' => TRUE,
'file' => 'lti_tool_provider.operations.inc',
'type' => MENU_CALLBACK,
);
$items['lti-tool-provider/return'] = array(
'title' => 'Return to LMS',
'title callback' => 'lti_tool_provider_return_title',
'page callback' => 'lti_tool_provider_return',
'access callback' => 'lti_tool_provider_context_access',
'access arguments' => array(
'access content',
),
'type' => MENU_NORMAL_ITEM,
'menu_name' => 'user-menu',
'file' => 'lti_tool_provider.operations.inc',
);
$items['lti-tool-provider/home'] = array(
'title' => 'Home',
'title callback' => 'lti_tool_provider_home_title',
'page callback' => 'lti_tool_provider_home',
'access callback' => 'lti_tool_provider_context_access',
'access arguments' => array(
'access content',
),
'type' => MENU_NORMAL_ITEM,
'menu_name' => 'user-menu',
'file' => 'lti_tool_provider.operations.inc',
);
$items['lti-tool-provider/info'] = array(
'title' => 'LTI Info',
'description' => 'View all the LTI context variables.',
'page callback' => 'lti_tool_provider_info',
'access callback' => 'lti_tool_provider_context_access',
'access arguments' => array(
'view lti info',
),
'type' => MENU_NORMAL_ITEM,
'menu_name' => 'navigation',
'file' => 'lti_tool_provider.operations.inc',
);
return $items;
}
/**
* Access callback that checks for LTI context as well as user access.
*
* @param string $access
* The access permission requested.
*
* @return boolean
* TRUE grants access.
*/
function lti_tool_provider_context_access($access) {
if (isset($_SESSION['lti_tool_provider_context_info']) && user_access($access)) {
return TRUE;
}
else {
return FALSE;
}
}
/**
* Menu title callback for the lti return menu item.
*/
function lti_tool_provider_return_title($title) {
if (isset($_SESSION['lti_tool_provider_context_info'])) {
if (key_exists('custom_return_label', $_SESSION['lti_tool_provider_context_info'])) {
return check_plain($_SESSION['lti_tool_provider_context_info']['custom_return_label']);
}
if (isset($_SESSION['lti_tool_provider_context_info']['tool_consumer_instance_name'])) {
return t('Return to @tool', array(
'@tool' => $_SESSION['lti_tool_provider_context_info']['tool_consumer_instance_name'],
));
}
else {
return t('Return to LMS');
}
}
}
/**
* Menu title callback for the LTI Home menu item.
*
* @return string
* The title.
*/
function lti_tool_provider_home_title($title) {
if (key_exists('custom_destination_label', $_SESSION['lti_tool_provider_context_info'])) {
return check_plain($_SESSION['lti_tool_provider_context_info']['custom_destination_label']);
}
if (key_exists('resource_link_title', $_SESSION['lti_tool_provider_context_info'])) {
return check_plain($_SESSION['lti_tool_provider_context_info']['resource_link_title']);
}
return t('Home');
}
/**
* Map a user to a drupal Global role based on his/her role in the LTI context.
*
* @param string $lti_roles
* The string representing the lti_roles.
* @param integer $uid
* The id of the user to assign the role.
*/
function lti_tool_provider_assign_global_roles_to_user($lti_roles, $uid) {
$select_roles = user_roles(TRUE, NULL);
$global_role_array = variable_get('lti_tool_provider_global_role_array');
$roles = explode(',', $lti_roles);
foreach ($roles as $key => $raw_role) {
$tmp = explode(':', $raw_role);
$tmp2 = explode('/', end($tmp));
$lti_role = end($tmp2);
// Check if the mapped global role exists.
if (isset($global_role_array[$lti_role]) && isset($select_roles[$global_role_array[$lti_role]])) {
user_multiple_role_edit(array(
$uid,
), 'add_role', $global_role_array[$lti_role]);
}
}
}
/**
* Remove a user from drupal Global roles based on LTI roles.
*
* @param string $lti_roles
* The string representing the lti_roles.
* @param integer $uid
* The id of the user to assign the role.
*/
function lti_tool_provider_unassign_global_roles_from_user($lti_roles, $uid) {
$select_roles = user_roles(TRUE, NULL);
$global_role_array = variable_get('lti_tool_provider_global_role_array');
$roles = explode(',', $lti_roles);
foreach ($roles as $key => $raw_role) {
$tmp = explode(':', $raw_role);
$tmp2 = explode('/', end($tmp));
$lti_role = end($tmp2);
// Check if the mapped global role exists.
if (isset($global_role_array[$lti_role]) && isset($select_roles[$global_role_array[$lti_role]])) {
user_multiple_role_edit(array(
$uid,
), 'remove_role', $global_role_array[$lti_role]);
}
}
}
/**
* Determine if this is a valid LTI request.
*
* @return boolean
* Returns TRUE if this is a Basic LTI message with minimum values
* to meet the protocol.
*/
function lti_tool_provider_is_basic_lti_request() {
$good_message_type = array_key_exists('lti_message_type', $_REQUEST) ? $_REQUEST["lti_message_type"] : "basic-lti-launch-request";
$good_lti_version = array_key_exists('lti_version', $_REQUEST) ? $_REQUEST["lti_version"] : "LTI-1p0";
$resource_link_id = array_key_exists('resource_link_id', $_REQUEST) ? $_REQUEST["resource_link_id"] : NULL;
if ($good_message_type and $good_lti_version and isset($resource_link_id)) {
return TRUE;
}
return FALSE;
}
/**
* Get the LTI roles.
*
* @return array
* An array containing the roles.
*/
function lti_tool_provider_get_lti_roles() {
return array(
'Learner',
'Instructor',
'ContentDeveloper',
'Member',
'Manager',
'Mentor',
'Administrator',
'TeachingAssistant',
);
}
/**
* Get the LTI variables relating to the user.
*
* @return array
* An array containing the variable names.
*/
function lti_tool_provider_user_mapping_lis_details() {
return array(
'lis_person_name_given',
'lis_person_name_family',
'lis_person_name_full',
);
}
/**
* Get the LTI variables relating to the context.
*
* @return array
* An array containing the variable names.
*/
function lti_tool_provider_context_mapping_details() {
return array(
'context_id',
'context_label',
'context_title',
'context_type',
);
}
/**
* Retrieve the field labels and types from the user entity.
*
* Return as an array suitable for a select list.
*
* @param string $filter
* The string which represent the type of field to retrieve.
*
* @return array
* An array containing all the retrieved fields.
* The label is not display safe.
*/
function _lti_tool_provider_retrieve_user_field_types($filter = 'TEXT') {
$entites = field_info_instances('user');
$result = array(
'none' => 'None',
);
foreach ($entites['user'] as $field) {
if (strcasecmp($field['widget']['module'], $filter) == 0) {
$result[$field['field_name']] = $field['label'] . ' (' . $field['field_name'] . ')';
}
}
return $result;
}
/**
* Save a consumer.
*
* @param object $entity
* The consumer to be saved.
*/
function lti_tool_provider_consumer_save(&$entity) {
return entity_get_controller('lti_tool_provider_consumer')
->save($entity);
}
/**
* Delete a consumer.
*
* @param object $entity
* The consumer to be deleted.
*/
function lti_tool_provider_consumer_delete($entity) {
entity_get_controller('lti_tool_provider_consumer')
->delete($entity);
}
/**
* Retrieves the consumer entity via its consumer key.
*
* @param string $key
* Consumer key.
*
* @return object
* Consumer entity, null if record is unable to be retrieved.
*/
function lti_tool_provider_get_consumer_by_key($key) {
$entity_type = 'lti_tool_provider_consumer';
$query = new EntityFieldQuery();
$query
->entityCondition('entity_type', $entity_type)
->propertyCondition('lti_tool_provider_consumer_key', $key);
$result = $query
->execute();
if (!empty($result[$entity_type])) {
$consumers = entity_load($entity_type, array_keys($result[$entity_type]));
return reset($consumers);
}
return NULL;
}
/**
* Load a consumer.
*
* @param integer $id
* The id of the consumer entity to be loaded.
* @param boolean $reset
* Wether to reset the cache.
*
* @return object
* The consumer entity.
*/
function lti_tool_provider_consumer_load($id = NULL, $reset = FALSE) {
$ids = isset($id) ? array(
$id,
) : array();
$obj = lti_tool_provider_consumer_load_multiple($ids, $reset);
return $obj ? reset($obj) : FALSE;
}
/**
* Load consumers from an array of ids.
*
* @param array $ids
* An array of ids to load.
* @param array $conditions
* An array of search conditions.
* @param boolean $reset
* Wether to reset the cache.
*
* @return object
* An array of consumer entity objects.
*/
function lti_tool_provider_consumer_load_multiple($ids = FALSE, $conditions = array(), $reset = FALSE) {
return entity_load('lti_tool_provider_consumer', $ids, $conditions, $reset);
}
/**
* Remove dummy account for a domain.
*
* @param string $domain
* The domain.
*
* @return array
* An array of the removed uids.
*/
function lti_tool_provider_remove_dummy_account($domain = '') {
$dummy_name = $domain == '' ? 'lti_user' : 'lti_user@' . $domain;
$dummy_acc_arr = array();
$query = new EntityFieldQuery();
$query
->entityCondition('entity_type', 'user')
->propertyCondition('name', $dummy_name, '=');
$result = $query
->execute();
if (isset($result['user'])) {
user_delete_multiple(array_keys($result['user']));
return array_keys($result['user']);
}
else {
return NULL;
}
}
/**
* Create a dummy account for a domain.
*
* @param string $domain
* A consumer domain.
*
* @return integer
* The account uid.
*/
function lti_tool_provider_create_dummy_account($domain) {
$dummy_name = $domain == '' ? 'lti_user' : 'lti_user@' . $domain;
if ($account = user_load_by_name($dummy_name)) {
return $account->uid;
}
else {
$mail = $domain == '' ? $dummy_name . '@invalid' : $dummy_name . '@' . $domain . '.invalid';
// Create user with the authenticated roles.
$userinfo = array(
'name' => $dummy_name,
'pass' => user_password(20),
'init' => $mail,
'mail' => $mail,
'status' => 1,
'access' => REQUEST_TIME,
);
$account = user_save(drupal_anonymous_user(), $userinfo);
// Add default (drupal authenticated role).
user_multiple_role_edit(array(
$account->uid,
), 'add_role', 2);
return $account->uid;
}
}
/**
* Translate boolean to On/Off.
*
* @param integer $bool
* The integer.
*
* @return string
* On or Off.
*/
function lti_tool_provider_trans_bool($bool) {
if ($bool == 1) {
return 'On';
}
else {
return 'Off';
}
}
/**
* List columns added by other modules to the consumer.
*
* @return array
* An array of column names.
*/
function lti_tool_provider_get_extra_columns() {
$extra_col = array();
$schema = drupal_get_schema('lti_tool_provider_consumer');
$fields = $schema['fields'];
foreach ($fields as $field => $value) {
if ($field != 'lti_tool_provider_consumer_id' && $field != 'lti_tool_provider_consumer_key' && $field != 'lti_tool_provider_consumer_secret' && $field != 'lti_tool_provider_consumer_consumer' && $field != 'lti_tool_provider_consumer_domain' && $field != 'lti_tool_provider_consumer_dummy_pref' && $field != 'date_joined') {
$extra_col[] = $field;
}
}
return $extra_col;
}
/**
* Implements hook_entity_info().
*/
function lti_tool_provider_entity_info() {
$return = array(
'lti_tool_provider_consumer' => array(
'label' => t('LTI Tool Provider Consumer'),
'controller class' => 'LTIToolProviderConsumerEntityController',
'base table' => 'lti_tool_provider_consumer',
'fieldable' => TRUE,
'entity keys' => array(
'id' => 'lti_tool_provider_consumer_id',
'label' => 'lti_tool_provider_consumer_consumer',
),
'static cache' => TRUE,
'view modes' => array(
'full' => array(
'label' => t('Default'),
'custom settings' => FALSE,
),
),
'uri callback' => 'lti_tool_provider_consumer_uri',
'module' => 'lti_tool_provider_consumer',
'bundles' => array(
'lti_tool_provider_consumer' => array(
'admin' => array(
'path' => 'admin/config/lti-tool-provider/lti-tool-provider-consumers',
'access arguments' => array(
'administer lti_tool_provider module',
),
),
),
),
'access callback' => 'lti_tool_provider_consumer_access',
),
);
return $return;
}
/**
* Get the url to view a consumer.
*
* @param object $consumer
* A consumer object.
*
* @return string
* The url for the consumer view.
*/
function lti_tool_provider_consumer_uri($consumer) {
return array(
'path' => 'lti_tool_provider_consumer/' . $consumer->id,
);
}
/**
* Perform a drupal goto but avoid interfering with cron.php.
*/
function lti_tool_provider_goto($path) {
if (php_sapi_name() == 'cli') {
// This may mean cron via Drush.
drupal_exit();
}
if (preg_match('/\\/cron.php$/', $_SERVER['SCRIPT_NAME'])) {
// Check for cron.php in the url.
// preg_match accommodates sites in sub-directories.
drupal_exit();
}
if (arg(0) == 'admin' && arg(1) == 'reports' && arg(2) == 'status' && arg(3) == 'run-cron') {
drupal_exit();
}
drupal_goto($path);
}
/**
* Provision a user account from the lti_info.
*
* @param string $lti_user
* The lti user name.
* @param array $lti_info
* The lti context info.
*
* @return object
* The user account object or FALSE if the account creation failed.
*/
function lti_tool_provider_create_account($lti_user, $lti_info) {
// If a user image is supplied create a managed file,
// and attach it to the user account.
if (isset($context_info['user_image'])) {
$file = (object) array(
'uid' => 1,
'uri' => $context_info['user_image'],
'filename' => drupal_basename($lti_info['user_image']),
'filemime' => file_get_mimetype($filepath),
'status' => 1,
);
$file = file_save($file);
$picture = $file->fid;
}
else {
$picture = 0;
}
// Construct the userinfo to be used to create the account.
$user_attribute_settings = variable_get('lti_tool_provider_user_attribute_mapping', array());
$fields = _lti_tool_provider_retrieve_user_field_types('TEXT');
$userinfo = array(
'name' => $lti_user,
'pass' => user_password(20),
'init' => $lti_info['lis_person_contact_email_primary'],
'mail' => $lti_info['lis_person_contact_email_primary'],
'picture' => $picture,
'status' => 1,
'access' => REQUEST_TIME,
);
foreach ($user_attribute_settings as $variable => $field) {
if ($field != 'none' && isset($fields[$field]) && isset($lti_info[$variable])) {
$userinfo[$field] = array(
LANGUAGE_NONE => array(
'0' => array(
'value' => $lti_info[$variable],
),
),
);
}
}
$account = user_save(drupal_anonymous_user(), $userinfo);
// Allow other modules to alter the newly provisioned lti user account.
drupal_alter('lti_tool_provider_create_account', $account, $lti_info);
return $account;
}
/**
* Implements hook_entity_property_info().
*/
function lti_tool_provider_entity_property_info() {
$info = array();
// Add meta-data about the basic properties.
$properties =& $info['lti_tool_provider_consumer']['properties'];
$properties['lti_tool_provider_consumer_id'] = array(
'label' => t("Primary key"),
'type' => 'integer',
'description' => t("Primary key"),
'schema field' => 'lti_tool_provider_consumer_id',
);
$properties['lti_tool_provider_consumer_key'] = array(
'label' => t("Key"),
'type' => 'text',
'description' => t("Key of the consumer"),
'schema field' => 'lti_tool_provider_consumer_key',
);
$properties['lti_tool_provider_consumer_secret'] = array(
'label' => t("Secret"),
'type' => 'text',
'description' => t("Secret"),
'schema field' => 'lti_tool_provider_consumer_secret',
);
$properties['lti_tool_provider_consumer_consumer'] = array(
'label' => t("Consumer name"),
'type' => 'text',
'description' => t("Consumer name"),
'schema field' => 'lti_tool_provider_consumer_consumer',
);
$properties['lti_tool_provider_consumer_dummy_pref'] = array(
'label' => t("Dummy pref"),
'type' => 'integer',
'description' => t("Preference as to use as dummy account"),
'schema field' => 'lti_tool_provider_consumer_dummy_pref',
);
$properties['date_joined'] = array(
'label' => t("Date joined"),
'type' => 'date',
'description' => t("Date the consumer was added"),
'schema field' => 'date_joined',
);
return $info;
}
/**
* Determines whether the given user has access to view a tool provider consumer.
*
* @param $op
* The operation being performed. One of 'view', 'update', 'create', 'delete'.
* @param $item
* Optionally a field collection item. If nothing is given, access for all
* items is determined.
* @param $account
* The user to check for. Leave it to NULL to check for the global user.
* @return boolean
* Whether access is allowed or not.
*/
function lti_tool_provider_consumer_access($op, $item = NULL, $account = NULL) {
// allow administer permission to trump all others
if (user_access('administer lti_tool_provider module', $account)) {
return TRUE;
}
// allow for access of the entity type
if ($op == 'view' && user_access('access lti_tool_provider_consumer entities', $account)) {
return TRUE;
}
// they didn't have viewer rights ignore this call
return FALSE;
}Functions
Name |
Description |
|---|---|
| lti_tool_provider_assign_global_roles_to_user | Map a user to a drupal Global role based on his/her role in the LTI context. |
| lti_tool_provider_consumer_access | Determines whether the given user has access to view a tool provider consumer. |
| lti_tool_provider_consumer_delete | Delete a consumer. |
| lti_tool_provider_consumer_load | Load a consumer. |
| lti_tool_provider_consumer_load_multiple | Load consumers from an array of ids. |
| lti_tool_provider_consumer_save | Save a consumer. |
| lti_tool_provider_consumer_uri | Get the url to view a consumer. |
| lti_tool_provider_context_access | Access callback that checks for LTI context as well as user access. |
| lti_tool_provider_context_mapping_details | Get the LTI variables relating to the context. |
| lti_tool_provider_create_account | Provision a user account from the lti_info. |
| lti_tool_provider_create_dummy_account | Create a dummy account for a domain. |
| lti_tool_provider_entity_info | Implements hook_entity_info(). |
| lti_tool_provider_entity_property_info | Implements hook_entity_property_info(). |
| lti_tool_provider_get_consumer_by_key | Retrieves the consumer entity via its consumer key. |
| lti_tool_provider_get_extra_columns | List columns added by other modules to the consumer. |
| lti_tool_provider_get_lti_roles | Get the LTI roles. |
| lti_tool_provider_goto | Perform a drupal goto but avoid interfering with cron.php. |
| lti_tool_provider_help | Implements hook_help(). |
| lti_tool_provider_home_title | Menu title callback for the LTI Home menu item. |
| lti_tool_provider_is_basic_lti_request | Determine if this is a valid LTI request. |
| lti_tool_provider_libraries_info | Implements hook_library_info(). |
| lti_tool_provider_menu | Implements hook_menu(). |
| lti_tool_provider_permission | Implements hook_permission(). |
| lti_tool_provider_registry_files_alter | Implements hook_registry_files_alter(). |
| lti_tool_provider_remove_dummy_account | Remove dummy account for a domain. |
| lti_tool_provider_return_title | Menu title callback for the lti return menu item. |
| lti_tool_provider_trans_bool | Translate boolean to On/Off. |
| lti_tool_provider_unassign_global_roles_from_user | Remove a user from drupal Global roles based on LTI roles. |
| lti_tool_provider_user_mapping_lis_details | Get the LTI variables relating to the user. |
| _lti_tool_provider_retrieve_user_field_types | Retrieve the field labels and types from the user entity. |