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lib.php
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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 mod-scorm
* @copyright 1999 onwards Martin Dougiamas {@link http://moodle.com}
* @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
*/
/** SCORM_TYPE_LOCAL = local */
define('SCORM_TYPE_LOCAL', 'local');
/** SCORM_TYPE_LOCALSYNC = localsync */
define('SCORM_TYPE_LOCALSYNC', 'localsync');
/** SCORM_TYPE_EXTERNAL = external */
define('SCORM_TYPE_EXTERNAL', 'external');
/** SCORM_TYPE_IMSREPOSITORY = imsrepository */
define('SCORM_TYPE_IMSREPOSITORY', 'imsrepository');
/**
* Given an object containing all the necessary data,
* (defined by the form in mod_form.php) this function
* will create a new instance and return the id number
* of the new instance.
*
* @global stdClass
* @global object
* @uses CONTEXT_MODULE
* @uses SCORM_TYPE_LOCAL
* @uses SCORM_TYPE_LOCALSYNC
* @uses SCORM_TYPE_EXTERNAL
* @uses SCORM_TYPE_IMSREPOSITORY
* @param object $scorm Form data
* @param object $mform
* @return int new instance id
*/
function scorm_add_instance($scorm, $mform=null) {
global $CFG, $DB;
require_once($CFG->dirroot.'/mod/scorm/locallib.php');
if (empty($scorm->timeopen)) {
$scorm->timeopen = 0;
}
if (empty($scorm->timeclose)) {
$scorm->timeclose = 0;
}
$cmid = $scorm->coursemodule;
$cmidnumber = $scorm->cmidnumber;
$courseid = $scorm->course;
$context = get_context_instance(CONTEXT_MODULE, $cmid);
$scorm = scorm_option2text($scorm);
$scorm->width = (int)str_replace('%', '', $scorm->width);
$scorm->height = (int)str_replace('%', '', $scorm->height);
if (!isset($scorm->whatgrade)) {
$scorm->whatgrade = 0;
}
$id = $DB->insert_record('scorm', $scorm);
/// update course module record - from now on this instance properly exists and all function may be used
$DB->set_field('course_modules', 'instance', $id, array('id'=>$cmid));
/// reload scorm instance
$record = $DB->get_record('scorm', array('id'=>$id));
/// store the package and verify
if ($record->scormtype === SCORM_TYPE_LOCAL) {
if ($mform) {
$filename = $mform->get_new_filename('packagefile');
if ($filename !== false) {
$fs = get_file_storage();
$fs->delete_area_files($context->id, 'mod_scorm', 'package');
$mform->save_stored_file('packagefile', $context->id, 'mod_scorm', 'package', 0, '/', $filename);
$record->reference = $filename;
}
}
} else if ($record->scormtype === SCORM_TYPE_LOCALSYNC) {
$record->reference = $scorm->packageurl;
} else if ($record->scormtype === SCORM_TYPE_EXTERNAL) {
$record->reference = $scorm->packageurl;
} else if ($record->scormtype === SCORM_TYPE_IMSREPOSITORY) {
$record->reference = $scorm->packageurl;
} else {
return false;
}
// save reference
$DB->update_record('scorm', $record);
/// extra fields required in grade related functions
$record->course = $courseid;
$record->cmidnumber = $cmidnumber;
$record->cmid = $cmid;
scorm_parse($record, true);
scorm_grade_item_update($record);
return $record->id;
}
/**
* Given an object containing all the necessary data,
* (defined by the form in mod_form.php) this function
* will update an existing instance with new data.
*
* @global stdClass
* @global object
* @uses CONTEXT_MODULE
* @uses SCORM_TYPE_LOCAL
* @uses SCORM_TYPE_LOCALSYNC
* @uses SCORM_TYPE_EXTERNAL
* @uses SCORM_TYPE_IMSREPOSITORY
* @param object $scorm Form data
* @param object $mform
* @return bool
*/
function scorm_update_instance($scorm, $mform=null) {
global $CFG, $DB;
require_once($CFG->dirroot.'/mod/scorm/locallib.php');
if (empty($scorm->timeopen)) {
$scorm->timeopen = 0;
}
if (empty($scorm->timeclose)) {
$scorm->timeclose = 0;
}
$cmid = $scorm->coursemodule;
$cmidnumber = $scorm->cmidnumber;
$courseid = $scorm->course;
$scorm->id = $scorm->instance;
$context = get_context_instance(CONTEXT_MODULE, $cmid);
if ($scorm->scormtype === SCORM_TYPE_LOCAL) {
if ($mform) {
$filename = $mform->get_new_filename('packagefile');
if ($filename !== false) {
$scorm->reference = $filename;
$fs = get_file_storage();
$fs->delete_area_files($context->id, 'mod_scorm', 'package');
$mform->save_stored_file('packagefile', $context->id, 'mod_scorm', 'package', 0, '/', $filename);
}
}
} else if ($scorm->scormtype === SCORM_TYPE_LOCALSYNC) {
$scorm->reference = $scorm->packageurl;
} else if ($scorm->scormtype === SCORM_TYPE_EXTERNAL) {
$scorm->reference = $scorm->packageurl;
} else if ($scorm->scormtype === SCORM_TYPE_IMSREPOSITORY) {
$scorm->reference = $scorm->packageurl;
} else {
return false;
}
$scorm = scorm_option2text($scorm);
$scorm->width = (int)str_replace('%','',$scorm->width);
$scorm->height = (int)str_replace('%','',$scorm->height);
$scorm->timemodified = time();
if (!isset($scorm->whatgrade)) {
$scorm->whatgrade = 0;
}
$DB->update_record('scorm', $scorm);
$scorm = $DB->get_record('scorm', array('id'=>$scorm->id));
/// extra fields required in grade related functions
$scorm->course = $courseid;
$scorm->idnumber = $cmidnumber;
$scorm->cmid = $cmid;
scorm_parse($scorm, (bool)$scorm->updatefreq);
scorm_grade_item_update($scorm);
scorm_update_grades($scorm);
return true;
}
/**
* Given an ID of an instance of this module,
* this function will permanently delete the instance
* and any data that depends on it.
*
* @global stdClass
* @global object
* @param int $id Scorm instance id
* @return boolean
*/
function scorm_delete_instance($id) {
global $CFG, $DB;
if (! $scorm = $DB->get_record('scorm', array('id'=>$id))) {
return false;
}
$result = true;
// Delete any dependent records
if (! $DB->delete_records('scorm_scoes_track', array('scormid'=>$scorm->id))) {
$result = false;
}
if ($scoes = $DB->get_records('scorm_scoes', array('scorm'=>$scorm->id))) {
foreach ($scoes as $sco) {
if (! $DB->delete_records('scorm_scoes_data', array('scoid'=>$sco->id))) {
$result = false;
}
}
$DB->delete_records('scorm_scoes', array('scorm'=>$scorm->id));
} else {
$result = false;
}
if (! $DB->delete_records('scorm', array('id'=>$scorm->id))) {
$result = false;
}
/*if (! $DB->delete_records('scorm_sequencing_controlmode', array('scormid'=>$scorm->id))) {
$result = false;
}
if (! $DB->delete_records('scorm_sequencing_rolluprules', array('scormid'=>$scorm->id))) {
$result = false;
}
if (! $DB->delete_records('scorm_sequencing_rolluprule', array('scormid'=>$scorm->id))) {
$result = false;
}
if (! $DB->delete_records('scorm_sequencing_rollupruleconditions', array('scormid'=>$scorm->id))) {
$result = false;
}
if (! $DB->delete_records('scorm_sequencing_rolluprulecondition', array('scormid'=>$scorm->id))) {
$result = false;
}
if (! $DB->delete_records('scorm_sequencing_rulecondition', array('scormid'=>$scorm->id))) {
$result = false;
}
if (! $DB->delete_records('scorm_sequencing_ruleconditions', array('scormid'=>$scorm->id))) {
$result = false;
}*/
scorm_grade_item_delete($scorm);
return $result;
}
/**
* Return a small object with summary information about what a
* user has done with a given particular instance of this module
* Used for user activity reports.
*
* @global stdClass
* @param int $course Course id
* @param int $user User id
* @param int $mod
* @param int $scorm The scorm id
* @return mixed
*/
function scorm_user_outline($course, $user, $mod, $scorm) {
global $CFG;
require_once($CFG->dirroot.'/mod/scorm/locallib.php');
require_once("$CFG->libdir/gradelib.php");
$grades = grade_get_grades($course->id, 'mod', 'scorm', $scorm->id, $user->id);
if (!empty($grades->items[0]->grades)) {
$grade = reset($grades->items[0]->grades);
$result = new stdClass();
$result->info = get_string('grade') . ': '. $grade->str_long_grade;
//datesubmitted == time created. dategraded == time modified or time overridden
//if grade was last modified by the user themselves use date graded. Otherwise use date submitted
if ($grade->usermodified == $user->id || empty($grade->datesubmitted)) {
$result->time = $grade->dategraded;
} else {
$result->time = $grade->datesubmitted;
}
return $result;
}
return null;
}
/**
* Print a detailed representation of what a user has done with
* a given particular instance of this module, for user activity reports.
*
* @global stdClass
* @global object
* @param object $course
* @param object $user
* @param object $mod
* @param object $scorm
* @return boolean
*/
function scorm_user_complete($course, $user, $mod, $scorm) {
global $CFG, $DB, $OUTPUT;
require_once("$CFG->libdir/gradelib.php");
$liststyle = 'structlist';
$now = time();
$firstmodify = $now;
$lastmodify = 0;
$sometoreport = false;
$report = '';
// First Access and Last Access dates for SCOs
require_once($CFG->dirroot.'/mod/scorm/locallib.php');
$timetracks = scorm_get_sco_runtime($scorm->id, false, $user->id);
$firstmodify = $timetracks->start;
$lastmodify = $timetracks->finish;
$grades = grade_get_grades($course->id, 'mod', 'scorm', $scorm->id, $user->id);
if (!empty($grades->items[0]->grades)) {
$grade = reset($grades->items[0]->grades);
echo $OUTPUT->container(get_string('grade').': '.$grade->str_long_grade);
if ($grade->str_feedback) {
echo $OUTPUT->container(get_string('feedback').': '.$grade->str_feedback);
}
}
if ($orgs = $DB->get_records_select('scorm_scoes', 'scorm = ? AND '.
$DB->sql_isempty('scorm_scoes', 'launch', false, true).' AND '.
$DB->sql_isempty('scorm_scoes', 'organization', false, false),
array($scorm->id),'id','id,identifier,title')) {
if (count($orgs) <= 1) {
unset($orgs);
$orgs[]->identifier = '';
}
$report .= '<div class="mod-scorm">'."\n";
foreach ($orgs as $org) {
$conditions = array();
$currentorg = '';
if (!empty($org->identifier)) {
$report .= '<div class="orgtitle">'.$org->title.'</div>';
$currentorg = $org->identifier;
$conditions['organization'] = $currentorg;
}
$report .= "<ul id='0' class='$liststyle'>";
$conditions['scorm'] = $scorm->id;
if ($scoes = $DB->get_records('scorm_scoes', $conditions, "id ASC")){
// drop keys so that we can access array sequentially
$scoes = array_values($scoes);
$level=0;
$sublist=1;
$parents[$level]='/';
foreach ($scoes as $pos=>$sco) {
if ($parents[$level]!=$sco->parent) {
if ($level>0 && $parents[$level-1]==$sco->parent) {
$report .= "\t\t</ul></li>\n";
$level--;
} else {
$i = $level;
$closelist = '';
while (($i > 0) && ($parents[$level] != $sco->parent)) {
$closelist .= "\t\t</ul></li>\n";
$i--;
}
if (($i == 0) && ($sco->parent != $currentorg)) {
$report .= "\t\t<li><ul id='$sublist' class='$liststyle'>\n";
$level++;
} else {
$report .= $closelist;
$level = $i;
}
$parents[$level]=$sco->parent;
}
}
$report .= "\t\t<li>";
if (isset($scoes[$pos+1])) {
$nextsco = $scoes[$pos+1];
} else {
$nextsco = false;
}
if (($nextsco !== false) && ($sco->parent != $nextsco->parent) && (($level==0) || (($level>0) && ($nextsco->parent == $sco->identifier)))) {
$sublist++;
} else {
$report .= '<img src="'.$OUTPUT->pix_url('spacer', 'scorm').'" alt="" />';
}
if ($sco->launch) {
$score = '';
$totaltime = '';
if ($usertrack=scorm_get_tracks($sco->id,$user->id)) {
if ($usertrack->status == '') {
$usertrack->status = 'notattempted';
}
$strstatus = get_string($usertrack->status,'scorm');
$report .= "<img src='".$OUTPUT->pix_url($usertrack->status, 'scorm')."' alt='$strstatus' title='$strstatus' />";
} else {
if ($sco->scormtype == 'sco') {
$report .= '<img src="'.$OUTPUT->pix_url('notattempted', 'scorm').'" alt="'.get_string('notattempted','scorm').'" title="'.get_string('notattempted','scorm').'" />';
} else {
$report .= '<img src="'.$OUTPUT->pix_url('asset', 'scorm').'" alt="'.get_string('asset','scorm').'" title="'.get_string('asset','scorm').'" />';
}
}
$report .= " $sco->title $score$totaltime</li>\n";
if ($usertrack !== false) {
$sometoreport = true;
$report .= "\t\t\t<li><ul class='$liststyle'>\n";
foreach($usertrack as $element => $value) {
if (substr($element,0,3) == 'cmi') {
$report .= '<li>'.$element.' => '.s($value).'</li>';
}
}
$report .= "\t\t\t</ul></li>\n";
}
} else {
$report .= " $sco->title</li>\n";
}
}
for ($i=0;$i<$level;$i++) {
$report .= "\t\t</ul></li>\n";
}
}
$report .= "\t</ul><br />\n";
}
$report .= "</div>\n";
}
if ($sometoreport) {
if ($firstmodify < $now) {
$timeago = format_time($now - $firstmodify);
echo get_string('firstaccess','scorm').': '.userdate($firstmodify).' ('.$timeago.")<br />\n";
}
if ($lastmodify > 0) {
$timeago = format_time($now - $lastmodify);
echo get_string('lastaccess','scorm').': '.userdate($lastmodify).' ('.$timeago.")<br />\n";
}
echo get_string('report','scorm').":<br />\n";
echo $report;
} else {
print_string('noactivity','scorm');
}
return true;
}
/**
* Function to be run periodically according to the moodle cron
* This function searches for things that need to be done, such
* as sending out mail, toggling flags etc ...
*
* @global stdClass
* @global object
* @return boolean
*/
function scorm_cron () {
global $CFG, $DB;
require_once($CFG->dirroot.'/mod/scorm/locallib.php');
$sitetimezone = $CFG->timezone;
/// Now see if there are any scorm updates to be done
if (!isset($CFG->scorm_updatetimelast)) { // To catch the first time
set_config('scorm_updatetimelast', 0);
}
$timenow = time();
$updatetime = usergetmidnight($timenow, $sitetimezone);
if ($CFG->scorm_updatetimelast < $updatetime and $timenow > $updatetime) {
set_config('scorm_updatetimelast', $timenow);
mtrace('Updating scorm packages which require daily update');//We are updating
$scormsupdate = $DB->get_records('scorm', array('updatefreq'=>UPDATE_EVERYDAY));
foreach($scormsupdate as $scormupdate) {
scorm_parse($scormupdate, true);
}
}
return true;
}
/**
* Return grade for given user or all users.
*
* @global stdClass
* @global object
* @param int $scormid id of scorm
* @param int $userid optional user id, 0 means all users
* @return array array of grades, false if none
*/
function scorm_get_user_grades($scorm, $userid=0) {
global $CFG, $DB;
require_once($CFG->dirroot.'/mod/scorm/locallib.php');
$grades = array();
if (empty($userid)) {
if ($scousers = $DB->get_records_select('scorm_scoes_track', "scormid=? GROUP BY userid", array($scorm->id), "", "userid,null")) {
foreach ($scousers as $scouser) {
$grades[$scouser->userid] = new stdClass();
$grades[$scouser->userid]->id = $scouser->userid;
$grades[$scouser->userid]->userid = $scouser->userid;
$grades[$scouser->userid]->rawgrade = scorm_grade_user($scorm, $scouser->userid);
}
} else {
return false;
}
} else {
if (!$DB->get_records_select('scorm_scoes_track', "scormid=? AND userid=? GROUP BY userid", array($scorm->id, $userid), "", "userid,null")) {
return false; //no attempt yet
}
$grades[$userid] = new stdClass();
$grades[$userid]->id = $userid;
$grades[$userid]->userid = $userid;
$grades[$userid]->rawgrade = scorm_grade_user($scorm, $userid);
}
return $grades;
}
/**
* Update grades in central gradebook
*
* @global stdClass
* @global object
* @param object $scorm
* @param int $userid specific user only, 0 mean all
* @param bool $nullifnone
*/
function scorm_update_grades($scorm, $userid=0, $nullifnone=true) {
global $CFG, $DB;
require_once($CFG->libdir.'/gradelib.php');
if ($grades = scorm_get_user_grades($scorm, $userid)) {
scorm_grade_item_update($scorm, $grades);
} else if ($userid and $nullifnone) {
$grade = new stdClass();
$grade->userid = $userid;
$grade->rawgrade = NULL;
scorm_grade_item_update($scorm, $grade);
} else {
scorm_grade_item_update($scorm);
}
}
/**
* Update all grades in gradebook.
*
* @global object
*/
function scorm_upgrade_grades() {
global $DB;
$sql = "SELECT COUNT('x')
FROM {scorm} s, {course_modules} cm, {modules} m
WHERE m.name='scorm' AND m.id=cm.module AND cm.instance=s.id";
$count = $DB->count_records_sql($sql);
$sql = "SELECT s.*, cm.idnumber AS cmidnumber, s.course AS courseid
FROM {scorm} s, {course_modules} cm, {modules} m
WHERE m.name='scorm' AND m.id=cm.module AND cm.instance=s.id";
$rs = $DB->get_recordset_sql($sql);
if ($rs->valid()) {
$pbar = new progress_bar('scormupgradegrades', 500, true);
$i=0;
foreach ($rs as $scorm) {
$i++;
upgrade_set_timeout(60*5); // set up timeout, may also abort execution
scorm_update_grades($scorm, 0, false);
$pbar->update($i, $count, "Updating Scorm grades ($i/$count).");
}
}
$rs->close();
}
/**
* Update/create grade item for given scorm
*
* @global stdClass
* @global object
* @uses GRADE_TYPE_VALUE
* @uses GRADE_TYPE_NONE
* @param object $scorm object with extra cmidnumber
* @param mixed $grades optional array/object of grade(s); 'reset' means reset grades in gradebook
* @return object grade_item
*/
function scorm_grade_item_update($scorm, $grades=NULL) {
global $CFG, $DB;
require_once($CFG->dirroot.'/mod/scorm/locallib.php');
if (!function_exists('grade_update')) { //workaround for buggy PHP versions
require_once($CFG->libdir.'/gradelib.php');
}
$params = array('itemname'=>$scorm->name);
if (isset($scorm->cmidnumber)) {
$params['idnumber'] = $scorm->cmidnumber;
}
if ($scorm->grademethod == GRADESCOES) {
if ($maxgrade = $DB->count_records_select('scorm_scoes', 'scorm = ? AND '.$DB->sql_isnotempty('scorm_scoes', 'launch', false, true), array($scorm->id))) {
$params['gradetype'] = GRADE_TYPE_VALUE;
$params['grademax'] = $maxgrade;
$params['grademin'] = 0;
} else {
$params['gradetype'] = GRADE_TYPE_NONE;
}
} else {
$params['gradetype'] = GRADE_TYPE_VALUE;
$params['grademax'] = $scorm->maxgrade;
$params['grademin'] = 0;
}
if ($grades === 'reset') {
$params['reset'] = true;
$grades = NULL;
}
return grade_update('mod/scorm', $scorm->course, 'mod', 'scorm', $scorm->id, 0, $grades, $params);
}
/**
* Delete grade item for given scorm
*
* @global stdClass
* @param object $scorm object
* @return object grade_item
*/
function scorm_grade_item_delete($scorm) {
global $CFG;
require_once($CFG->libdir.'/gradelib.php');
return grade_update('mod/scorm', $scorm->course, 'mod', 'scorm', $scorm->id, 0, NULL, array('deleted'=>1));
}
/**
* @return array
*/
function scorm_get_view_actions() {
return array('pre-view','view','view all','report');
}
/**
* @return array
*/
function scorm_get_post_actions() {
return array();
}
/**
* @param object $scorm
* @return object $scorm
*/
function scorm_option2text($scorm) {
$scorm_popoup_options = scorm_get_popup_options_array();
if (isset($scorm->popup)) {
if ($scorm->popup == 1) {
$optionlist = array();
foreach ($scorm_popoup_options as $name => $option) {
if (isset($scorm->$name)) {
$optionlist[] = $name.'='.$scorm->$name;
} else {
$optionlist[] = $name.'=0';
}
}
$scorm->options = implode(',', $optionlist);
} else {
$scorm->options = '';
}
} else {
$scorm->popup = 0;
$scorm->options = '';
}
return $scorm;
}
/**
* Implementation of the function for printing the form elements that control
* whether the course reset functionality affects the scorm.
*
* @param object $mform form passed by reference
*/
function scorm_reset_course_form_definition(&$mform) {
$mform->addElement('header', 'scormheader', get_string('modulenameplural', 'scorm'));
$mform->addElement('advcheckbox', 'reset_scorm', get_string('deleteallattempts','scorm'));
}
/**
* Course reset form defaults.
*
* @return array
*/
function scorm_reset_course_form_defaults($course) {
return array('reset_scorm'=>1);
}
/**
* Removes all grades from gradebook
*
* @global stdClass
* @global object
* @param int $courseid
* @param string optional type
*/
function scorm_reset_gradebook($courseid, $type='') {
global $CFG, $DB;
$sql = "SELECT s.*, cm.idnumber as cmidnumber, s.course as courseid
FROM {scorm} s, {course_modules} cm, {modules} m
WHERE m.name='scorm' AND m.id=cm.module AND cm.instance=s.id AND s.course=?";
if ($scorms = $DB->get_records_sql($sql, array($courseid))) {
foreach ($scorms as $scorm) {
scorm_grade_item_update($scorm, 'reset');
}
}
}
/**
* Actual implementation of the reset course functionality, delete all the
* scorm attempts for course $data->courseid.
*
* @global stdClass
* @global object
* @param object $data the data submitted from the reset course.
* @return array status array
*/
function scorm_reset_userdata($data) {
global $CFG, $DB;
$componentstr = get_string('modulenameplural', 'scorm');
$status = array();
if (!empty($data->reset_scorm)) {
$scormssql = "SELECT s.id
FROM {scorm} s
WHERE s.course=?";
$DB->delete_records_select('scorm_scoes_track', "scormid IN ($scormssql)", array($data->courseid));
// remove all grades from gradebook
if (empty($data->reset_gradebook_grades)) {
scorm_reset_gradebook($data->courseid);
}
$status[] = array('component'=>$componentstr, 'item'=>get_string('deleteallattempts', 'scorm'), 'error'=>false);
}
// no dates to shift here
return $status;
}
/**
* Returns all other caps used in module
*
* @return array
*/
function scorm_get_extra_capabilities() {
return array('moodle/site:accessallgroups');
}
/**
* Lists all file areas current user may browse
*
* @param object $course
* @param object $cm
* @param object $context
* @return array
*/
function scorm_get_file_areas($course, $cm, $context) {
$areas = array();
$areas['content'] = get_string('areacontent', 'scorm');
$areas['package'] = get_string('areapackage', 'scorm');
return $areas;
}
/**
* File browsing support for SCORM file areas
*
* @param stdclass $browser
* @param stdclass $areas
* @param stdclass $course
* @param stdclass $cm
* @param stdclass $context
* @param string $filearea
* @param int $itemid
* @param string $filepath
* @param string $filename
* @return stdclass file_info instance or null if not found
*/
function scorm_get_file_info($browser, $areas, $course, $cm, $context, $filearea, $itemid, $filepath, $filename) {
global $CFG;
if (!has_capability('moodle/course:managefiles', $context)) {
return null;
}
// no writing for now!
$fs = get_file_storage();
if ($filearea === 'content') {
$filepath = is_null($filepath) ? '/' : $filepath;
$filename = is_null($filename) ? '.' : $filename;
$urlbase = $CFG->wwwroot.'/pluginfile.php';
if (!$storedfile = $fs->get_file($context->id, 'mod_scorm', 'content', 0, $filepath, $filename)) {
if ($filepath === '/' and $filename === '.') {
$storedfile = new virtual_root_file($context->id, 'mod_scorm', 'content', 0);
} else {
// not found
return null;
}
}
require_once("$CFG->dirroot/mod/scorm/locallib.php");
return new scorm_package_file_info($browser, $context, $storedfile, $urlbase, $areas[$filearea], true, true, false, false);
} else if ($filearea === 'package') {
$filepath = is_null($filepath) ? '/' : $filepath;
$filename = is_null($filename) ? '.' : $filename;
$urlbase = $CFG->wwwroot.'/pluginfile.php';
if (!$storedfile = $fs->get_file($context->id, 'mod_scorm', 'package', 0, $filepath, $filename)) {
if ($filepath === '/' and $filename === '.') {
$storedfile = new virtual_root_file($context->id, 'mod_scorm', 'package', 0);
} else {
// not found
return null;
}
}
return new file_info_stored($browser, $context, $storedfile, $urlbase, $areas[$filearea], false, true, false, false);
}
// scorm_intro handled in file_browser
return false;
}
/**
* Serves scorm content, introduction images and packages. Implements needed access control ;-)
*
* @param object $course
* @param object $cm
* @param object $context
* @param string $filearea
* @param array $args
* @param bool $forcedownload
* @return bool false if file not found, does not return if found - just send the file
*/
function scorm_pluginfile($course, $cm, $context, $filearea, $args, $forcedownload) {
global $CFG;
if ($context->contextlevel != CONTEXT_MODULE) {
return false;
}
require_login($course, true, $cm);
$lifetime = isset($CFG->filelifetime) ? $CFG->filelifetime : 86400;
if ($filearea === 'content') {
$revision = (int)array_shift($args); // prevents caching problems - ignored here
$relativepath = implode('/', $args);
$fullpath = "/$context->id/mod_scorm/content/0/$relativepath";
// TODO: add any other access restrictions here if needed!
} else if ($filearea === 'package') {
if (!has_capability('moodle/course:manageactivities', $context)) {
return false;
}
$relativepath = implode('/', $args);
$fullpath = "/$context->id/mod_scorm/package/0/$relativepath";
$lifetime = 0; // no caching here
} else {
return false;
}
$fs = get_file_storage();
if (!$file = $fs->get_file_by_hash(sha1($fullpath)) or $file->is_directory()) {
return false;
}
// finally send the file
send_stored_file($file, $lifetime, 0, false);
}
/**
* @uses FEATURE_GROUPS
* @uses FEATURE_GROUPINGS
* @uses FEATURE_GROUPMEMBERSONLY
* @uses FEATURE_MOD_INTRO
* @uses FEATURE_COMPLETION_TRACKS_VIEWS
* @uses FEATURE_GRADE_HAS_GRADE
* @uses FEATURE_GRADE_OUTCOMES
* @param string $feature FEATURE_xx constant for requested feature
* @return mixed True if module supports feature, false if not, null if doesn't know
*/
function scorm_supports($feature) {
switch($feature) {
case FEATURE_GROUPS: return false;
case FEATURE_GROUPINGS: return false;
case FEATURE_GROUPMEMBERSONLY: return true;
case FEATURE_MOD_INTRO: return true;
case FEATURE_COMPLETION_TRACKS_VIEWS: return true;
case FEATURE_GRADE_HAS_GRADE: return true;
case FEATURE_GRADE_OUTCOMES: return true;
case FEATURE_BACKUP_MOODLE2: return true;
default: return null;
}
}
/**
* This function extends the global navigation for the site.
* It is important to note that you should not rely on PAGE objects within this
* body of code as there is no guarantee that during an AJAX request they are
* available
*
* @param navigation_node $navigation The scorm node within the global navigation
* @param stdClass $course The course object returned from the DB
* @param stdClass $module The module object returned from the DB
* @param stdClass $cm The course module instance returned from the DB
*/
function scorm_extend_navigation($navigation, $course, $module, $cm) {
/**
* This is currently just a stub so that it can be easily expanded upon.
* When expanding just remove this comment and the line below and then add
* you content.
*/
$navigation->nodetype = navigation_node::NODETYPE_LEAF;
}
/**
* Get the filename for a temp log file
*
* @param string $type - type of log(aicc,scorm12,scorm13) used as prefix for filename
* @param integer $scoid - scoid of object this log entry is for
* @return string The filename as an absolute path
*/
function scorm_debug_log_filename($type, $scoid) {
global $CFG, $USER;
$logpath = $CFG->dataroot.'/temp/scormlogs';
$logfile = $logpath.'/'.$type.'debug_'.$USER->id.'_'.$scoid.'.log';
return $logfile;
}
/**
* writes log output to a temp log file
*
* @param string $type - type of log(aicc,scorm12,scorm13) used as prefix for filename
* @param string $text - text to be written to file.
* @param integer $scoid - scoid of object this log entry is for.
*/
function scorm_debug_log_write($type, $text, $scoid) {
$debugenablelog = get_config('scorm', 'allowapidebug');
if (!$debugenablelog || empty($text)) {
return ;
}
if (make_upload_directory('temp/scormlogs/')) {
$logfile = scorm_debug_log_filename($type, $scoid);
@file_put_contents($logfile, date('Y/m/d H:i:s O')." DEBUG $text\r\n", FILE_APPEND);
}
}
/**
* Remove debug log file
*
* @param string $type - type of log(aicc,scorm12,scorm13) used as prefix for filename
* @param integer $scoid - scoid of object this log entry is for
* @return boolean True if the file is successfully deleted, false otherwise
*/