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lib.php
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<?php
// This file is part of Moodle - http://moodle.org/
//
// Moodle is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// Moodle is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with Moodle. If not, see <http://www.gnu.org/licenses/>.
/*
* @package plagiarism_turnitin
* @copyright 2013 iParadigms LLC
*/
use Integrations\PhpSdk\TiiClass;
use Integrations\PhpSdk\TiiSubmission;
use Integrations\PhpSdk\TiiAssignment;
use Integrations\PhpSdk\TiiLTI;
if (!defined('MOODLE_INTERNAL')) {
die('Direct access to this script is forbidden.'); // It must be included from a Moodle page.
}
// Constants.
define('PLAGIARISM_TURNITIN_MAX_FILE_UPLOAD_SIZE', 104857600);
define('PLAGIARISM_TURNITIN_NUM_RECORDS_RETURN', 500);
define('PLAGIARISM_TURNITIN_CRON_SUBMISSIONS_LIMIT', 100);
define('PLAGIARISM_TURNITIN_REPORT_GEN_SPEED_NUM_RESUBMISSIONS', 3);
define('PLAGIARISM_TURNITIN_REPORT_GEN_SPEED_NUM_HOURS', 24);
define('PLAGIARISM_TURNITIN_MAX_FILENAME_LENGTH', 180);
define('PLAGIARISM_TURNITIN_COURSE_TITLE_LIMIT', 300);
// Admin Repository constants.
define('PLAGIARISM_TURNITIN_ADMIN_REPOSITORY_OPTION_STANDARD', 0);
define('PLAGIARISM_TURNITIN_ADMIN_REPOSITORY_OPTION_EXPANDED', 1);
define('PLAGIARISM_TURNITIN_ADMIN_REPOSITORY_OPTION_FORCE_STANDARD', 2);
define('PLAGIARISM_TURNITIN_ADMIN_REPOSITORY_OPTION_FORCE_NO', 3);
define('PLAGIARISM_TURNITIN_ADMIN_REPOSITORY_OPTION_FORCE_INSTITUTIONAL', 4);
// Submit Papers to Repository constants.
define('PLAGIARISM_TURNITIN_SUBMIT_TO_NO_REPOSITORY', 0);
define('PLAGIARISM_TURNITIN_SUBMIT_TO_STANDARD_REPOSITORY', 1);
define('PLAGIARISM_TURNITIN_SUBMIT_TO_INSTITUTIONAL_REPOSITORY', 2);
// Student privacy constants.
define('PLAGIARISM_TURNITIN_DEFAULT_PSEUDO_DOMAIN', '@tiimoodle.com');
define('PLAGIARISM_TURNITIN_DEFAULT_PSEUDO_FIRSTNAME', get_string('defaultcoursestudent'));
// Define accepted files if the module is not accepting any file type.
global $turnitinacceptedfiles;
$turnitinacceptedfiles = array('.doc', '.docx', '.ppt', '.pptx', '.pps', '.ppsx',
'.pdf', '.txt', '.htm', '.html', '.hwp', '.odt',
'.wpd', '.ps', '.rtf', '.xls', '.xlsx');
require_once($CFG->libdir.'/gradelib.php');
// Get global class.
require_once($CFG->dirroot.'/plagiarism/lib.php');
// Get helper methods.
require_once($CFG->dirroot.'/plagiarism/turnitin/locallib.php');
// Include plugin classes.
require_once($CFG->dirroot.'/plagiarism/turnitin/classes/turnitin_assignment.class.php');
require_once($CFG->dirroot.'/plagiarism/turnitin/classes/turnitin_view.class.php');
require_once($CFG->dirroot.'/plagiarism/turnitin/classes/turnitin_class.class.php');
require_once($CFG->dirroot.'/plagiarism/turnitin/classes/turnitin_submission.class.php');
require_once($CFG->dirroot.'/plagiarism/turnitin/classes/turnitin_comms.class.php');
require_once($CFG->dirroot.'/plagiarism/turnitin/classes/turnitin_user.class.php');
require_once($CFG->dirroot.'/plagiarism/turnitin/classes/digitalreceipt/pp_receipt_message.php');
require_once($CFG->dirroot.'/plagiarism/turnitin/classes/forms/turnitin_form.class.php');
// Include supported module specific code.
require_once($CFG->dirroot.'/plagiarism/turnitin/classes/modules/turnitin_assign.class.php');
require_once($CFG->dirroot.'/plagiarism/turnitin/classes/modules/turnitin_forum.class.php');
require_once($CFG->dirroot.'/plagiarism/turnitin/classes/modules/turnitin_quiz.class.php');
require_once($CFG->dirroot.'/plagiarism/turnitin/classes/modules/turnitin_workshop.class.php');
require_once($CFG->dirroot.'/plagiarism/turnitin/classes/modules/turnitin_coursework.class.php');
class plagiarism_plugin_turnitin extends plagiarism_plugin {
/**
* Static variable to load the function from js files by using js_call_amd only once.
*/
private static $amdcomponentsloaded = false;
/**
* Get the fields to be used in the form to configure each activities Turnitin settings.
*
* @return array of settings fields.
*/
public function get_settings_fields() {
return array('use_turnitin', 'plagiarism_show_student_report', 'plagiarism_draft_submit',
'plagiarism_allow_non_or_submissions', 'plagiarism_submitpapersto', 'plagiarism_compare_student_papers',
'plagiarism_compare_internet', 'plagiarism_compare_journals', 'plagiarism_report_gen',
'plagiarism_compare_institution', 'plagiarism_exclude_biblio', 'plagiarism_exclude_quoted',
'plagiarism_exclude_matches', 'plagiarism_exclude_matches_value', 'plagiarism_rubric', 'plagiarism_erater',
'plagiarism_erater_handbook', 'plagiarism_erater_dictionary', 'plagiarism_erater_spelling',
'plagiarism_erater_grammar', 'plagiarism_erater_usage', 'plagiarism_erater_mechanics',
'plagiarism_erater_style', 'plagiarism_transmatch');
}
/**
* Get the configuration settings for the plagiarism plugin
*
* @return mixed if plugin is enabled then an array of config settings is returned or false if not
*/
public static function get_config_settings($modulename) {
$pluginconfig = get_config('plagiarism_turnitin', 'plagiarism_turnitin_'.$modulename);
return $pluginconfig;
}
/**
* @return mixed the admin config settings for the plugin
*/
public static function plagiarism_turnitin_admin_config() {
return get_config('plagiarism_turnitin');
}
/**
* Get the Turnitin settings for a module
*
* @param int $cmid - the course module id, if this is 0 the default settings will be retrieved
* @param bool $uselockedvalues - use locked values in place of saved values
* @return array of Turnitin settings for a module
*/
public function get_settings($cmid = null, $uselockedvalues = true) {
global $DB;
$defaults = $DB->get_records_menu('plagiarism_turnitin_config', array('cm' => null), '', 'name,value');
$settings = $DB->get_records_menu('plagiarism_turnitin_config', array('cm' => $cmid), '', 'name,value');
// Don't overwrite settings with locked values (only relevant on inital module creation).
if ($uselockedvalues == false) {
return $settings;
}
// Enforce site wide config locking.
foreach ($defaults as $key => $value) {
if (substr($key, -5) !== '_lock') {
continue;
}
if ($value != 1) {
continue;
}
$setting = substr($key, 0, -5);
$settings[$setting] = $defaults[$setting];
}
return $settings;
}
/**
* Get a list of the file upload errors.
*
* @param int $offset Number of records to skip.
* @param int $limit Max records to return.
* @param bool $count If true, returns a count of the total number of
* records.
* @access public
* @return array|int A list of records, or count when $count is true.
*/
public function get_file_upload_errors($offset = 0, $limit = 0, $count = false) {
global $DB;
$sql = "FROM {plagiarism_turnitin_files} PTF
LEFT JOIN {user} U ON U.id = PTF.userid
LEFT JOIN {course_modules} CM ON CM.id = PTF.cm
LEFT JOIN {modules} M ON CM.module = M.id
LEFT JOIN {course} C ON CM.course = C.id
WHERE PTF.statuscode = 'error'";
$countsql = "SELECT count(1) $sql";
$selectsql = "SELECT PTF.id, U.firstname, U.lastname, U.email, PTF.cm, M.name AS moduletype,
C.id AS courseid, C.fullname AS coursename, PTF.identifier, PTF.submissiontype,
PTF.errorcode, PTF.errormsg
$sql
ORDER BY PTF.id DESC";
if ($count) {
return $DB->count_records_sql($countsql);
}
return $DB->get_records_sql($selectsql, array(), $offset, $limit);
}
/**
* This function is called from the inbox in mod assign.
* This will alert the user to refresh the assignment when there has been a change in scores.
*
* @param $course - Course the module is part of
* @param $cm - Course module
* @return string
*/
public function update_status($course, $cm) {
return html_writer::div(get_string('turnitin_score_refresh_alert', 'plagiarism_turnitin'),
'turnitin_score_refresh_alert', array('id' => 'turnitin_score_refresh_alert'));
}
/**
* Check if plugin has been configured with Turnitin account details.
* @return boolean whether the plugin is configured for Turnitin.
**/
public function is_plugin_configured() {
$config = $this->plagiarism_turnitin_admin_config();
if (empty($config->plagiarism_turnitin_accountid) ||
empty($config->plagiarism_turnitin_apiurl) ||
empty($config->plagiarism_turnitin_secretkey)) {
return false;
}
return true;
}
/**
* Save the form data associated with the plugin
*
* @global type $DB
* @param object $data the form data to save
*/
public function save_form_data($data) {
global $DB;
$moduletiienabled = $this->get_config_settings('mod_'.$data->modulename);
if (empty($moduletiienabled)) {
return;
}
$settingsfields = $this->get_settings_fields();
// Get current values.
$plagiarismvalues = $this->get_settings($data->coursemodule, false);
foreach ($settingsfields as $field) {
if (isset($data->$field)) {
$optionfield = new stdClass();
$optionfield->cm = $data->coursemodule;
$optionfield->name = $field;
$optionfield->value = $data->$field;
if (isset($plagiarismvalues[$field])) {
$optionfield->id = $DB->get_field('plagiarism_turnitin_config', 'id',
(array('cm' => $data->coursemodule, 'name' => $field)));
if (!$DB->update_record('plagiarism_turnitin_config', $optionfield)) {
plagiarism_turnitin_print_error('defaultupdateerror', 'plagiarism_turnitin', null, null, __FILE__, __LINE__);
}
} else {
$optionfield->config_hash = $optionfield->cm."_".$optionfield->name;
if (!$DB->insert_record('plagiarism_turnitin_config', $optionfield)) {
plagiarism_turnitin_print_error('defaultinserterror', 'plagiarism_turnitin', null, null, __FILE__, __LINE__);
}
}
}
}
}
/**
* Add the Turnitin settings form to an add/edit activity page
*
* @param object $mform
* @param object $context
* @return type
*/
public function add_settings_form_to_activity_page($mform, $context, $modulename = "") {
global $DB, $PAGE, $COURSE;
if (has_capability('plagiarism/turnitin:enable', $context)) {
// Get Course module id and values.
$cmid = optional_param('update', null, PARAM_INT);
// Return no form if the plugin isn't configured.
if (!$this->is_plugin_configured()) {
return;
}
// Check if plagiarism plugin is enabled for this module if provided.
if (!empty($modulename)) {
$moduletiienabled = $this->get_config_settings($modulename);
if (empty($moduletiienabled)) {
return;
}
}
// Get assignment settings, use default settings on assignment creation.
$plagiarismvalues = $this->get_settings($cmid);
/* If Turnitin is disabled and we don't have settings (we're editing an existing assignment
* that was created without Turnitin enabled)
* Then we pass NULL for the $cmid to ensure we have the default settings should they enable Turnitin.
*/
if (empty($plagiarismvalues["use_turnitin"]) && count($plagiarismvalues) <= 2) {
$savedvalues = $plagiarismvalues;
$plagiarismvalues = $this->get_settings(null);
// Ensure we reuse the saved setting for use Turnitin.
if (isset($savedvalues["use_turnitin"])) {
$plagiarismvalues["use_turnitin"] = $savedvalues["use_turnitin"];
}
}
$plagiarismelements = $this->get_settings_fields();
$turnitinview = new turnitin_view();
$plagiarismvalues["plagiarism_rubric"] = ( !empty($plagiarismvalues["plagiarism_rubric"]) ) ? $plagiarismvalues["plagiarism_rubric"] : 0;
// We don't require the settings form on Moodle 3.3's bulk completion feature.
if ($PAGE->pagetype != 'course-editbulkcompletion' && $PAGE->pagetype != 'course-editdefaultcompletion') {
// Create/Edit course in Turnitin and join user to class.
$course = $this->get_course_data($cmid, $COURSE->id);
$turnitinview->add_elements_to_settings_form($mform, $course, "activity", $modulename, $cmid, $plagiarismvalues["plagiarism_rubric"]);
}
$settingsdisplayed = true;
// Disable all plagiarism elements if turnitin is not enabled.
foreach ($plagiarismelements as $element) {
if ($element <> 'use_turnitin') { // Ignore this var.
$mform->disabledIf($element, 'use_turnitin', 'eq', 0);
}
}
// Check if files have already been submitted and disable exclude biblio and quoted if turnitin is enabled.
if ($cmid != 0) {
if ($DB->record_exists('plagiarism_turnitin_files', array('cm' => $cmid))) {
$mform->disabledIf('plagiarism_exclude_biblio', 'use_turnitin');
$mform->disabledIf('plagiarism_exclude_quoted', 'use_turnitin');
}
}
// Set the default value for each option as the value we have stored.
foreach ($plagiarismelements as $element) {
if (isset($plagiarismvalues[$element])) {
$mform->setDefault($element, $plagiarismvalues[$element]);
}
}
}
}
/**
* Remove Turnitin class and assignment links from database
* so that new classes and assignments will be created.
*
* @param type $eventdata
* @return boolean
*/
public static function course_reset($eventdata) {
global $DB, $CFG;
$data = $eventdata->get_data();
$courseid = (int)$data['other']['reset_options']['courseid'];
$resetcourse = true;
$resetassign = 0;
$resetassignsubmissions = 0;
if (!empty($data['other']['reset_options']['reset_assign_submissions'])) {
$resetassign = $data['other']['reset_options']['reset_assign_submissions'];
$resetassignsubmissions = $resetassign;
}
$resetforumall = 0;
$resetforum = 0;
if (!empty($data['other']['reset_options']['reset_forum_all'])) {
$resetforumall = $data['other']['reset_options']['reset_forum_all'];
$resetforum = $resetforumall;
}
// Get the modules that support the Plagiarism plugin by whether they have a class file.
$supportedmods = array();
foreach (scandir($CFG->dirroot.'/plagiarism/turnitin/classes/modules/') as $filename) {
if (!in_array($filename, array(".", ".."))) {
$filenamear = explode('.', $filename);
$classnamear = explode('_', $filenamear[0]); // Split the class name.
$supportedmods[] = $classnamear[1]; // Set the module name.
}
}
foreach ($supportedmods as $supportedmod) {
$module = $DB->get_record('modules', array('name' => $supportedmod));
if ($module === false) {
continue;
}
// Get all the course modules that have Turnitin enabled.
$sql = "SELECT cm.id
FROM {course_modules} cm
RIGHT JOIN {plagiarism_turnitin_config} ptc ON cm.id = ptc.cm
WHERE cm.module = :moduleid
AND cm.course = :courseid
AND ptc.name = 'turnitin_assignid'";
$params = array('courseid' => $courseid, 'moduleid' => $module->id);
$modules = $DB->get_records_sql($sql, $params);
if (count($modules) > 0) {
$reset = "reset".$supportedmod;
if (!empty($$reset)) {
// Remove Plagiarism plugin submissions and assignment id from DB for this module.
foreach ($modules as $mod) {
$DB->delete_records('plagiarism_turnitin_files', array('cm' => $mod->id));
$DB->delete_records('plagiarism_turnitin_config', array('cm' => $mod->id, 'name' => 'turnitin_assignid'));
}
} else {
$resetcourse = false;
}
}
}
// If all turnitin enabled modules for this course have been reset.
// then remove the Turnitin course id from the database.
if ($resetcourse) {
$DB->delete_records('plagiarism_turnitin_courses', array('courseid' => $courseid));
}
return true;
}
/**
* Test whether we can connect to Turnitin.
*
* Initially only being used if a student is logged in before checking whether they have accepted the EULA.
*/
public function test_turnitin_connection($workflowcontext = 'site') {
$turnitincomms = new turnitin_comms();
$tiiapi = $turnitincomms->initialise_api();
$class = new TiiClass();
$class->setTitle('Test finding a class to see if connection works');
try {
$tiiapi->findClasses($class);
return true;
} catch (Exception $e) {
$turnitincomms->handle_exceptions($e, 'connecttesterror', false);
if ($workflowcontext == 'cron') {
mtrace(get_string('ppeventsfailedconnection', 'plagiarism_turnitin'));
}
return false;
}
}
/**
* Print the Turnitin student disclosure inside the submission page for students to see
*
* @global $OUTPUT
* @global $USER
* @global $CFG
* @param $cmid
* @return string
*/
public function print_disclosure($cmid) {
global $OUTPUT, $USER, $DB;
static $tiiconnection;
$config = $this->plagiarism_turnitin_admin_config();
$output = '';
// Get course details.
$cm = get_coursemodule_from_id('', $cmid);
$moduletiienabled = $this->get_config_settings('mod_'.$cm->modname);
// Exit if Turnitin is not being used for this activity type.
if (empty($moduletiienabled)) {
return '';
}
$plagiarismsettings = $this->get_settings($cmid);
// Check Turnitin is enabled for this current module.
if (empty($plagiarismsettings['use_turnitin'])) {
return '';
}
$this->load_page_components();
// Show resubmission warning - but not for mod forum.
if ($cm->modname != 'forum') {
$tiisubmissions = $DB->get_records('plagiarism_turnitin_files', array('userid' => $USER->id, 'cm' => $cm->id));
$tiisubmissions = current($tiisubmissions);
if ($tiisubmissions) {
$genparams = $this->plagiarism_get_report_gen_speed_params();
$output .= html_writer::tag('div', get_string('reportgenspeed_resubmission', 'plagiarism_turnitin', $genparams), array('class' => 'tii_genspeednote'));
}
}
// Show agreement.
if (!empty($config->plagiarism_turnitin_agreement)) {
$contents = format_text($config->plagiarism_turnitin_agreement, FORMAT_MOODLE, array("noclean" => true));
$output .= $OUTPUT->box($contents, 'generalbox boxaligncenter', 'intro');
}
// Exit here if the plugin is not configured for Turnitin.
if (!$this->is_plugin_configured()) {
return $output;
}
// Show EULA if necessary and we have a connection to Turnitin.
if (empty($tiiconnection)) {
$tiiconnection = $this->test_turnitin_connection();
}
if ($tiiconnection) {
$coursedata = $this->get_course_data($cm->id, $cm->course);
$user = new turnitin_user($USER->id, "Learner");
$user->join_user_to_class($coursedata->turnitin_cid);
$eulaaccepted = ($user->useragreementaccepted == 0) ? $user->get_accepted_user_agreement() : $user->useragreementaccepted;
if ($eulaaccepted != 1) {
$eulalink = html_writer::tag('span',
get_string('turnitinppulapre', 'plagiarism_turnitin'),
array('class' => 'pp_turnitin_eula_link tii_tooltip', 'id' => 'rubric_manager_form')
);
$eulaignoredclass = ($eulaaccepted == 0) ? ' pp_turnitin_eula_ignored' : '';
$eula = html_writer::tag('div', $eulalink, array('class' => 'pp_turnitin_eula'.$eulaignoredclass,
'data-userid' => $user->id));
$form = turnitin_view::output_launch_form(
"useragreement",
0,
$user->tiiuserid,
"Learner",
get_string('turnitinppulapre', 'plagiarism_turnitin'),
false
);
$form .= " ".get_string('noscriptula', 'plagiarism_turnitin');
$noscripteula = html_writer::tag('noscript', $form, array('class' => 'warning turnitin_ula_noscript'));
}
// Show EULA launcher and form placeholder.
if (!empty($eula)) {
$output .= $eula.$noscripteula;
$turnitincomms = new turnitin_comms();
$turnitincall = $turnitincomms->initialise_api();
$customdata = array("disable_form_change_checker" => true,
"elements" => array(array('html', $OUTPUT->box('', '', 'useragreement_inputs'))));
$eulaform = new turnitin_form($turnitincall->getApiBaseUrl().TiiLTI::EULAENDPOINT, $customdata,
'POST', $target = 'eulaWindow', array('id' => 'eula_launch'));
$output .= $OUTPUT->box($eulaform->display(), 'tii_useragreement_form', 'useragreement_form');
}
}
if ($config->plagiarism_turnitin_usegrademark && !empty($plagiarismsettings["plagiarism_rubric"])) {
// Update assignment in case rubric is not stored in Turnitin yet.
$this->sync_tii_assignment($cm, $coursedata->turnitin_cid);
$rubricviewlink = html_writer::tag('span',
get_string('launchrubricview', 'plagiarism_turnitin'),
array('class' => 'rubric_view rubric_view_pp_launch_upload tii_tooltip',
'data-courseid' => $cm->course,
'data-cmid' => $cm->id,
'title' => get_string('launchrubricview',
'plagiarism_turnitin'), 'id' => 'rubric_manager_form'
)
);
$rubricviewlink = html_writer::tag('div', $rubricviewlink, array('class' => 'row_rubric_view'));
$output .= html_writer::tag('div', $rubricviewlink, array('class' => 'tii_links_container tii_disclosure_links'));
}
return $output;
}
/**
* Load JS needed by the page.
*/
public function load_page_components() {
global $PAGE, $CFG;
// The function from js files by using js_call_amd will be loaded only once.
if (static::$amdcomponentsloaded) {
return;
}
$PAGE->requires->js_call_amd('plagiarism_turnitin/open_viewer', 'origreport_open');
$PAGE->requires->js_call_amd('plagiarism_turnitin/open_viewer', 'grademark_open');
$PAGE->requires->js_call_amd('plagiarism_turnitin/peermark', 'peermarkLaunch');
$PAGE->requires->js_call_amd('plagiarism_turnitin/rubric', 'rubric');
// Moodle 4.3 uses a new Modal dialog that is not compatible with older versions of Moodle. Depending on the user's
// version of Moodle, we will use the supported versin of Modal dialog
if ($CFG->version >= 2023100900) {
$PAGE->requires->js_call_amd('plagiarism_turnitin/newEulaLaunch', 'newEulaLaunch');
} else {
$PAGE->requires->js_call_amd('plagiarism_turnitin/eulaLaunch', 'eulaLaunch');
}
$PAGE->requires->js_call_amd('plagiarism_turnitin/resend_submission', 'resendSubmission');
$PAGE->requires->string_for_js('closebutton', 'plagiarism_turnitin');
$PAGE->requires->string_for_js('loadingdv', 'plagiarism_turnitin');
if (!static::$amdcomponentsloaded) {
static::$amdcomponentsloaded = true;
}
}
/**
* Get Moodle and Turnitin Course data
*/
public function get_course_data($cmid, $courseid, $workflowcontext = 'site') {
$coursedata = turnitin_assignment::get_course_data($courseid, $workflowcontext);
// Get add from querystring to work out module type.
$add = optional_param('add', '', PARAM_TEXT);
if (empty($coursedata->turnitin_cid)) {
// Course may have existed in a previous incarnation of this plugin.
// Get this and save it in courses table if so.
if ($turnitincid = $this->get_previous_course_id($cmid, $courseid)) {
$coursedata->turnitin_cid = $turnitincid;
$coursedata = $this->migrate_previous_course($coursedata, $turnitincid);
} else {
// Otherwise create new course in Turnitin if it doesn't exist.
if ($cmid == 0) {
$tiicoursedata = $this->create_tii_course($cmid, $add, $coursedata, $workflowcontext);
} else {
$cm = get_coursemodule_from_id('', $cmid);
$tiicoursedata = $this->create_tii_course($cmid, $cm->modname, $coursedata, $workflowcontext);
}
$coursedata->turnitin_cid = (!empty($tiicoursedata->turnitin_cid)) ? $tiicoursedata->turnitin_cid : null;
$coursedata->turnitin_ctl = (!empty($tiicoursedata->turnitin_ctl)) ? $tiicoursedata->turnitin_ctl : "";
}
}
return $coursedata;
}
/**
*
* @global type $CFG
* @param type $linkarray
* @return type
*/
public function get_links($linkarray) {
global $CFG, $DB, $OUTPUT, $USER;
$output = "";
// Don't show links for certain file types as they won't have been submitted to Turnitin.
if (!empty($linkarray["file"])) {
$file = $linkarray["file"];
$filearea = $file->get_filearea();
$nonsubmittingareas = array("feedback_files", "introattachment");
if (in_array($filearea, $nonsubmittingareas)) {
return $output;
}
}
$component = (!empty($linkarray['component'])) ? $linkarray['component'] : "";
// Exit if this is a quiz and quizzes are disabled.
if ($component == "qtype_essay" && empty($this->get_config_settings('mod_quiz'))) {
return $output;
}
// If this is a quiz, retrieve the cmid
if ($component == "qtype_essay" && !empty($linkarray['area']) && empty($linkarray['cmid'])) {
$questions = question_engine::load_questions_usage_by_activity($linkarray['area']);
// Try to get cm using the questions owning context.
$context = $questions->get_owning_context();
if (empty($linkarray['cmid']) && $context->contextlevel == CONTEXT_MODULE) {
$linkarray['cmid'] = $context->instanceid;
}
}
// Set static variables.
static $cm;
static $forum;
if (empty($cm)) {
$cm = get_coursemodule_from_id('', $linkarray["cmid"]);
if ($cm->modname == 'forum') {
if (! $forum = $DB->get_record("forum", array("id" => $cm->instance))) {
print_error('invalidforumid', 'forum');
}
}
}
static $config;
if (empty($config)) {
$config = $this->plagiarism_turnitin_admin_config();
}
// Retrieve the plugin settings for this module.
static $plagiarismsettings = null;
if (is_null($plagiarismsettings)) {
$plagiarismsettings = $this->get_settings($linkarray["cmid"]);
}
// Is this plugin enabled for this activity type.
static $moduletiienabled;
if (empty($moduletiienabled)) {
$moduletiienabled = $this->get_config_settings('mod_'.$cm->modname);
}
// Exit if Turnitin is not being used for this module or activity type.
if (empty($moduletiienabled) || empty($plagiarismsettings['use_turnitin'])) {
return $output;
}
static $moduledata;
if (empty($moduledata)) {
$moduledata = $DB->get_record($cm->modname, array('id' => $cm->instance));
}
static $context;
if (empty($context)) {
$context = context_course::instance($cm->course);
}
static $coursedata;
if (empty($coursedata)) {
$coursedata = $this->get_course_data($cm->id, $cm->course);
}
// Create module object.
$moduleclass = "turnitin_".$cm->modname;
$moduleobject = new $moduleclass;
// Work out if logged in user is a tutor on this module.
static $istutor;
if (empty($istutor)) {
$istutor = $moduleobject->is_tutor($context);
}
// Define the timestamp for updating Peermark Assignments.
if (empty($_SESSION["updated_pm"][$cm->id]) && $config->plagiarism_turnitin_enablepeermark) {
$_SESSION["updated_pm"][$cm->id] = (time() - (60 * 5));
}
// If a text submission has been made, we can only display links for current attempts so don't show links previous attempts.
// This will need to be reworked when linkarray contains submission id.
static $contentdisplayed;
if ($cm->modname == 'assign' && !empty($linkarray["content"]) && $contentdisplayed == true) {
return $output;
}
if ((!empty($linkarray["file"]) || !empty($linkarray["content"])) && !empty($linkarray["cmid"])) {
$this->load_page_components();
$identifier = '';
$itemid = 0;
// Get File or Content information.
$submittinguser = $linkarray['userid'];
if (!empty($linkarray["file"])) {
$identifier = $file->get_pathnamehash();
$itemid = $file->get_itemid();
$submissiontype = 'file';
} else if (!empty($linkarray["content"])) {
// Get turnitin text content details.
$submissiontype = 'text_content';
if ($cm->modname == 'forum') {
$submissiontype = 'forum_post';
} else if ($cm->modname == 'quiz') {
$submissiontype = 'quiz_answer';
}
$content = $moduleobject->set_content($linkarray, $cm);
$identifier = ($submissiontype === 'quiz_answer') ? sha1($content.$linkarray["itemid"]) : sha1($content);
}
// Group submissions where all students have to submit sets userid to 0.
if ($linkarray['userid'] == 0 && !$istutor) {
$linkarray['userid'] = $USER->id;
}
/*
The author will be incorrect if an instructor submits on behalf of a student who is in a group.
To get around this, we get the group ID, get the group members and set the author as the first student in the group.
*/
$plagiarismfile = null;
$moodlesubmission = $DB->get_record('assign_submission', array('id' => $itemid), 'id, groupid');
if ((!empty($moodlesubmission->groupid)) && ($cm->modname == "assign")) {
$plagiarismfiles = $DB->get_records('plagiarism_turnitin_files', ['itemid' => $itemid, 'cm' => $cm->id, 'identifier' => $identifier],
'lastmodified DESC', '*', 0, 1);
$plagiarismfile = reset($plagiarismfiles);
$author = $plagiarismfile->userid;
$linkarray['userid'] = $author;
} else {
// Get correct user id that submission is for rather than who submitted, this only affects file submissions
// post Moodle 2.7 which is problematic as teachers can submit on behalf of students.
$author = $linkarray['userid'];
if ($itemid != 0) {
$author = $moduleobject->get_author($itemid);
$linkarray['userid'] = (!empty($author)) ? $author : $linkarray['userid'];
}
}
// Show the EULA for a student if necessary.
if ($linkarray["userid"] == $USER->id) {
$eula = "";
static $userid;
if (empty($userid)) {
$userid = 0;
}
// Show EULA if necessary and we have a connection to Turnitin.
if ($userid != $linkarray["userid"]) {
static $eulashown;
if (empty($eulashown)) {
$eulashown = false;
}
$user = new turnitin_user($USER->id, "Learner");
$success = $user->join_user_to_class($coursedata->turnitin_cid);
// Variable $success is false if there is no Turnitin connection and null if user has previously been enrolled.
if ((is_null($success) || $success === true) && $eulashown == false) {
$eulaaccepted = ($user->useragreementaccepted == 0) ? $user->get_accepted_user_agreement() : $user->useragreementaccepted;
$userid = $linkarray["userid"];
if ($eulaaccepted != 1) {
$eulalink = html_writer::tag('span',
get_string('turnitinppulapost', 'plagiarism_turnitin'),
array('class' => 'pp_turnitin_eula_link tii_tooltip', 'id' => 'rubric_manager_form')
);
$eula = html_writer::tag('div', $eulalink, array('class' => 'pp_turnitin_eula', 'data-userid' => $user->id));
}
// Show EULA launcher and form placeholder.
if (!empty($eula)) {
$output .= $eula;
$turnitincomms = new turnitin_comms();
$turnitincall = $turnitincomms->initialise_api();
$customdata = array("disable_form_change_checker" => true,
"elements" => array(array('html', $OUTPUT->box('', '', 'useragreement_inputs'))));
$eulaform = new turnitin_form(
$turnitincall->getApiBaseUrl().TiiLTI::EULAENDPOINT,
$customdata,
'POST',
$target = 'eulaWindow',
array('id' => 'eula_launch')
);
$output .= $OUTPUT->box($eulaform->display(), 'tii_useragreement_form', 'useragreement_form');
$eulashown = true;
}
}
}
}
// Check whether submission is a group submission - only applicable to assignment and coursework module.
// If it's a group submission then other users in the group should be able to see the originality score
// They can not open the DV though.
$submissionusers = array($linkarray["userid"]);
switch ($cm->modname) {
case "assign":
if ($moduledata->teamsubmission) {
$assignment = new assign($context, $cm, null);
if ($group = $assignment->get_submission_group($linkarray["userid"])) {
$users = groups_get_members($group->id);
$submissionusers = array_keys($users);
}
}
break;
case "coursework":
if ($moduledata->use_groups) {
$coursework = new \mod_coursework\models\coursework($moduledata->id);
$user = $DB->get_record('user', array('id' => $linkarray["userid"]));
$user = mod_coursework\models\user::find($user);
if ($group = $coursework->get_student_group($user)) {
$users = groups_get_members($group->id);
$submissionusers = array_keys($users);
}
}
}
// Proceed to displaying links for submissions.
if ($istutor || in_array($USER->id, $submissionusers)) {
// Prevent text content links being displayed for previous attempts as we have no way of getting the data.
if (!empty($linkarray["content"]) && $linkarray["userid"] == $USER->id) {
$contentdisplayed = true;
}
// Get turnitin file details.
if (is_null($plagiarismfile)) {
$plagiarismfiles = $DB->get_records('plagiarism_turnitin_files', array('userid' => $linkarray["userid"],
'cm' => $linkarray["cmid"], 'identifier' => $identifier),
'lastmodified DESC', '*', 0, 1);
$plagiarismfile = current($plagiarismfiles);
}
// Populate gradeitem query.
$gradeitemqueryarray = array(
'iteminstance' => $cm->instance,
'itemmodule' => $cm->modname,
'courseid' => $cm->course,
'itemnumber' => 0
);
// Get grade item and work out whether grades have been released for viewing.
$gradesreleased = true;
if ($gradeitem = $DB->get_record('grade_items', $gradeitemqueryarray)) {
switch ($gradeitem->hidden) {
case 1:
$gradesreleased = false;
break;
default:
$gradesreleased = ($gradeitem->hidden >= time()) ? false : true;
break;
}
// Give Marking workflow higher priority than gradebook hidden date.
if ($cm->modname == 'assign' && !empty($moduledata->markingworkflow)) {
$gradesreleased = $DB->record_exists(
'assign_user_flags',
array(
'userid' => $linkarray["userid"],
'assignment' => $cm->instance,
'workflowstate' => 'released'
));
}
}
$currentgradequery = false;
if ($gradeitem) {
$currentgradequery = $moduleobject->get_current_gradequery($linkarray["userid"], $cm->instance, $gradeitem->id);
}
// Display links to OR, GradeMark and show relevant errors.
if ($plagiarismfile) {
if ($plagiarismfile->statuscode == 'success' || ($plagiarismfile->statuscode == 'error' && $plagiarismfile->errorcode == 13)) {
if ($istutor || $linkarray["userid"] == $USER->id) {
$output .= html_writer::tag('div',
$OUTPUT->pix_icon('turnitin-icon',
get_string('turnitinid', 'plagiarism_turnitin').': '.$plagiarismfile->externalid,
'plagiarism_turnitin', array('class' => 'icon_size')).
get_string('turnitinid', 'plagiarism_turnitin').': '.$plagiarismfile->externalid,
array('class' => 'turnitin_status'));
}
// Show Originality Report score and link.
if (($istutor || (in_array($USER->id, $submissionusers) && $plagiarismsettings["plagiarism_show_student_report"])) &&
((is_null($plagiarismfile->orcapable) || $plagiarismfile->orcapable == 1) && !is_null($plagiarismfile->similarityscore))) {
// Show score.
if ($plagiarismfile->statuscode == "pending") {
$orscorehtml = html_writer::tag('div', ' ', array('title' => get_string('pending', 'plagiarism_turnitin'),
'class' => 'tii_tooltip origreport_score score_colour score_colour_'));
} else {
// Put EN flag if translated matching is on and that is the score used.
$transmatch = ($plagiarismfile->transmatch == 1) ? ' EN' : '';
if (is_null($plagiarismfile->similarityscore)) {
$score = ' ';
$titlescore = get_string('pending', 'plagiarism_turnitin');
$class = 'score_colour_';
} else {
$score = $plagiarismfile->similarityscore.'%';
$titlescore = $plagiarismfile->similarityscore.'% '.get_string('similarity', 'plagiarism_turnitin');
$class = 'score_colour_'.round($plagiarismfile->similarityscore, -1);
}
$orscorehtml = html_writer::tag('div', $score.$transmatch,
array('title' => $titlescore, 'class' => 'tii_tooltip origreport_score score_colour '.$class));
}
// Put in div placeholder for DV launch form.
$orscorehtml .= html_writer::tag('div', '', array('class' => 'launch_form origreport_form_'.$plagiarismfile->externalid));
// Add url for launching DV from Forum post.
if ($cm->modname == 'forum') {
$orscorehtml .= html_writer::tag('div', $CFG->wwwroot.'/plagiarism/turnitin/extras.php?cmid='.$linkarray["cmid"],
array('class' => 'origreport_forum_launch origreport_forum_launch_'.$plagiarismfile->externalid));
}
// This class is applied so that only the user who submitted or a tutor can open the DV.
$useropenclass = ($USER->id == $linkarray["userid"] || $istutor) ? 'pp_origreport_open' : '';
// Output container for OR Score.
$ordivclass = 'row_score pp_origreport '.$useropenclass.' origreport_'.$plagiarismfile->externalid.'_'.$linkarray["cmid"];
$output .= html_writer::tag('div', $orscorehtml, array('class' => $ordivclass, 'tabindex' => '0', 'role' => 'link'));
}
if (($plagiarismfile->orcapable == 0 && !is_null($plagiarismfile->orcapable))) {
$notorlink = html_writer::tag('div', 'x', array('title' => get_string('notorcapable', 'plagiarism_turnitin'),
'class' => 'tii_tooltip score_colour score_colour_ score_no_orcapable'));
// This class is applied so that only the user who submitted or a tutor can open the DV.
$useropenclass = ($USER->id == $linkarray["userid"] || $istutor) ? 'pp_origreport_open' : '';
$output .= html_writer::tag('div', $notorlink, array('class' => 'row_score pp_origreport '.$useropenclass));
}
// Check if blind marking is on and revealidentities is not set yet.
$blindon = (!empty($moduledata->blindmarking) && empty($moduledata->revealidentities));
// Check if a grade exists - as $currentgradequery->grade defaults to -1.
$gradeexists = false;
if (isset($currentgradequery->grade)) {
if ($currentgradequery->grade >= 0) {
$gradeexists = true;