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aicc.php
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aicc.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/>.
//Prevent Caching Headers
header("Expires: Mon, 26 Jul 1997 05:00:00 GMT");
header("Cache-Control: no-cache");
header("Pragma: no-cache");
require_once('../../config.php');
require_once($CFG->dirroot.'/mod/scorm/lib.php');
require_once($CFG->dirroot.'/mod/scorm/locallib.php');
require_once($CFG->dirroot.'/mod/scorm/datamodels/aicclib.php');
foreach ($_POST as $key => $value) {
$tempkey = strtolower($key);
$_POST[$tempkey] = $value;
}
$command = required_param('command', PARAM_ALPHA);
$sessionid = required_param('session_id', PARAM_ALPHANUM);
$aiccdata = optional_param('aicc_data', '', PARAM_RAW);
$cfg_scorm = get_config('scorm');
$url = new moodle_url('/mod/scorm/aicc.php', array('command'=>$command, 'session_id'=>$sessionid));
if ($aiccdata !== 0) {
$url->param('aicc_data', $aiccdata);
}
$PAGE->set_url($url);
if (empty($cfg_scorm->allowaicchacp)) {
require_login();
if (!confirm_sesskey($sessionid)) {
print_error('invalidsesskey');
}
$aiccuser = $USER;
$scormsession = $SESSION->scorm;
} else {
$scormsession = scorm_aicc_confirm_hacp_session($sessionid);
if (empty($scormsession)) {
print_error('invalidhacpsession', 'scorm');
}
$aiccuser = $DB->get_record('user', array('id'=>$scormsession->userid), 'id,username,lastname,firstname', MUST_EXIST);
}
if (!empty($command)) {
$command = strtolower($command);
if (isset($scormsession->scoid)) {
$scoid = $scormsession->scoid;
} else {
print_error('cannotcallscript');
}
$mode = 'normal';
if (isset($scormsession->scormmode)) {
$mode = $scormsession->scormmode;
}
$status = 'Not Initialized';
if (isset($scormsession->scormstatus)) {
$status = $scormsession->scormstatus;
}
if (isset($scormsession->attempt)) {
$attempt = $scormsession->attempt;
} else {
$attempt = 1;
}
if ($sco = scorm_get_sco($scoid, SCO_ONLY)) {
if (!$scorm = $DB->get_record('scorm', array('id'=>$sco->scorm))) {
print_error('cannotcallscript');
}
} else {
print_error('cannotcallscript');
}
$aiccrequest = "MOODLE scoid: $scoid"
. "\r\nMOODLE mode: $mode"
. "\r\nMOODLE status: $status"
. "\r\nMOODLE attempt: $attempt"
. "\r\nAICC sessionid: $sessionid"
. "\r\nAICC command: $command"
. "\r\nAICC aiccdata:\r\n$aiccdata";
scorm_debug_log_write("aicc", "HACP Request:\r\n$aiccrequest", $scoid);
ob_start();
if ($scorm = $DB->get_record('scorm', array('id'=>$sco->scorm))) {
switch ($command) {
case 'getparam':
if ($status == 'Not Initialized') {
$scormsession->scormstatus = 'Running';
$status = 'Running';
}
if ($status != 'Running') {
echo "error=101\r\nerror_text=Terminated\r\n";
} else {
if ($usertrack=scorm_get_tracks($scoid, $aiccuser->id, $attempt)) {
$userdata = $usertrack;
} else {
$userdata->status = '';
$userdata->score_raw = '';
}
$userdata->student_id = $aiccuser->username;
$userdata->student_name = $aiccuser->lastname .', '. $aiccuser->firstname;
$userdata->mode = $mode;
if ($userdata->mode == 'normal') {
$userdata->credit = 'credit';
} else {
$userdata->credit = 'no-credit';
}
if ($sco = scorm_get_sco($scoid)) {
$userdata->course_id = $sco->identifier;
$userdata->datafromlms = isset($sco->datafromlms)?$sco->datafromlms:'';
$userdata->mastery_score = isset($sco->mastery_score) && is_numeric($sco->mastery_score)?trim($sco->mastery_score):'';
$userdata->max_time_allowed = isset($sco->max_time_allowed)?$sco->max_time_allowed:'';
$userdata->time_limit_action = isset($sco->time_limit_action)?$sco->time_limit_action:'';
echo "error=0\r\nerror_text=Successful\r\naicc_data=";
echo "[Core]\r\n";
echo 'Student_ID='.$userdata->student_id."\r\n";
echo 'Student_Name='.$userdata->student_name."\r\n";
if (isset($userdata->{'cmi.core.lesson_location'})) {
echo 'Lesson_Location='.$userdata->{'cmi.core.lesson_location'}."\r\n";
} else {
echo 'Lesson_Location='."\r\n";
}
echo 'Credit='.$userdata->credit."\r\n";
if (isset($userdata->status)) {
if ($userdata->status == '') {
$userdata->entry = ', ab-initio';
} else {
if (isset($userdata->{'cmi.core.exit'}) && ($userdata->{'cmi.core.exit'} == 'suspend')) {
$userdata->entry = ', resume';
} else {
$userdata->entry = '';
}
}
}
if (isset($userdata->{'cmi.core.lesson_status'})) {
echo 'Lesson_Status='.$userdata->{'cmi.core.lesson_status'}.$userdata->entry."\r\n";
$scormsession->scorm_lessonstatus = $userdata->{'cmi.core.lesson_status'};
} else {
echo 'Lesson_Status=not attempted'.$userdata->entry."\r\n";
$scormsession->scorm_lessonstatus = 'not attempted';
}
if (isset($userdata->{'cmi.core.score.raw'})) {
$max = '';
$min = '';
if (isset($userdata->{'cmi.core.score.max'}) && !empty($userdata->{'cmi.core.score.max'})) {
$max = ', '.$userdata->{'cmi.core.score.max'};
if (isset($userdata->{'cmi.core.score.min'}) && !empty($userdata->{'cmi.core.score.min'})) {
$min = ', '.$userdata->{'cmi.core.score.min'};
}
}
echo 'Score='.$userdata->{'cmi.core.score.raw'}.$max.$min."\r\n";
} else {
echo 'Score='."\r\n";
}
if (isset($userdata->{'cmi.core.total_time'})) {
echo 'Time='.$userdata->{'cmi.core.total_time'}."\r\n";
} else {
echo 'Time='.'00:00:00'."\r\n";
}
echo 'Lesson_Mode='.$userdata->mode."\r\n";
if (isset($userdata->{'cmi.suspend_data'})) {
echo "[Core_Lesson]\r\n".rawurldecode($userdata->{'cmi.suspend_data'})."\r\n";
} else {
echo "[Core_Lesson]\r\n";
}
echo "[Core_Vendor]\r\n".$userdata->datafromlms."\r\n";
echo "[Evaluation]\r\nCourse_ID = {".$userdata->course_id."}\r\n";
echo "[Student_Data]\r\n";
echo 'Mastery_Score='.$userdata->mastery_score."\r\n";
echo 'Max_Time_Allowed='.$userdata->max_time_allowed."\r\n";
echo 'Time_Limit_Action='.$userdata->time_limit_action."\r\n";
} else {
print_error('cannotfindsco', 'scorm');
}
}
break;
case 'putparam':
if ($status == 'Running') {
if (! $cm = get_coursemodule_from_instance("scorm", $scorm->id, $scorm->course)) {
echo "error=1\r\nerror_text=Unknown\r\n"; // No one must see this error message if not hacked
}
if (!empty($aiccdata) && has_capability('mod/scorm:savetrack', context_module::instance($cm->id), $aiccuser->id)) {
$initlessonstatus = 'not attempted';
$lessonstatus = 'not attempted';
if (isset($scormsession->scorm_lessonstatus)) {
$initlessonstatus = $scormsession->scorm_lessonstatus;
}
$score = '';
$datamodel['lesson_location'] = 'cmi.core.lesson_location';
$datamodel['lesson_status'] = 'cmi.core.lesson_status';
$datamodel['score'] = 'cmi.core.score.raw';
$datamodel['time'] = 'cmi.core.session_time';
$datamodel['[core_lesson]'] = 'cmi.suspend_data';
$datamodel['[comments]'] = 'cmi.comments';
$datarows = explode("\r\n", $aiccdata);
reset($datarows);
while ((list(, $datarow) = each($datarows)) !== false) {
if (($equal = strpos($datarow, '=')) !== false) {
$element = strtolower(trim(substr($datarow, 0, $equal)));
$value = trim(substr($datarow, $equal+1));
if (isset($datamodel[$element])) {
$element = $datamodel[$element];
switch ($element) {
case 'cmi.core.lesson_location':
$id = scorm_insert_track($aiccuser->id, $scorm->id, $sco->id, $attempt, $element, $value);
break;
case 'cmi.core.lesson_status':
$statuses = array(
'passed' => 'passed',
'completed' => 'completed',
'failed' => 'failed',
'incomplete' => 'incomplete',
'browsed' => 'browsed',
'not attempted' => 'not attempted',
'p' => 'passed',
'c' => 'completed',
'f' => 'failed',
'i' => 'incomplete',
'b' => 'browsed',
'n' => 'not attempted'
);
$exites = array(
'logout' => 'logout',
'time-out' => 'time-out',
'suspend' => 'suspend',
'l' => 'logout',
't' => 'time-out',
's' => 'suspend',
);
$values = explode(',', $value);
$value = '';
if (count($values) > 1) {
$value = trim(strtolower($values[1]));
$value = $value[0];
if (isset($exites[$value])) {
$value = $exites[$value];
}
}
if (empty($value) || isset($exites[$value])) {
$subelement = 'cmi.core.exit';
$id = scorm_insert_track($aiccuser->id, $scorm->id, $sco->id, $attempt, $subelement, $value);
}
$value = trim(strtolower($values[0]));
$value = $value[0];
if (isset($statuses[$value]) && ($mode == 'normal')) {
$value = $statuses[$value];
$id = scorm_insert_track($aiccuser->id, $scorm->id, $sco->id, $attempt, $element, $value);
}
$lessonstatus = $value;
break;
case 'cmi.core.score.raw':
$values = explode(',', $value);
if ((count($values) > 1) && ($values[1] >= $values[0]) && is_numeric($values[1])) {
$subelement = 'cmi.core.score.max';
$value = trim($values[1]);
$id = scorm_insert_track($aiccuser->id, $scorm->id, $sco->id, $attempt, $subelement, $value);
if ((count($values) == 3) && ($values[2] <= $values[0]) && is_numeric($values[2])) {
$subelement = 'cmi.core.score.min';
$value = trim($values[2]);
$id = scorm_insert_track($aiccuser->id, $scorm->id, $sco->id, $attempt, $subelement, $value);
}
}
$value = '';
if (is_numeric($values[0])) {
$value = trim($values[0]);
$id = scorm_insert_track($aiccuser->id, $scorm->id, $sco->id, $attempt, $element, $value);
}
$score = $value;
break;
case 'cmi.core.session_time':
$scormsession->sessiontime = $value;
break;
}
}
} else {
if (isset($datamodel[strtolower(trim($datarow))])) {
$element = $datamodel[strtolower(trim($datarow))];
$value = '';
while ((($datarow = current($datarows)) !== false) && (substr($datarow, 0, 1) != '[')) {
$value .= $datarow."\r\n";
next($datarows);
}
$value = rawurlencode($value);
$id = scorm_insert_track($aiccuser->id, $scorm->id, $sco->id, $attempt, $element, $value);
}
}
}
if (($mode == 'browse') && ($initlessonstatus == 'not attempted')) {
$lessonstatus = 'browsed';
$id = scorm_insert_track($aiccuser->id, $scorm->id, $sco->id, $attempt, 'cmi.core.lesson_status', 'browsed');
}
if ($mode == 'normal') {
if ($sco = scorm_get_sco($scoid)) {
if (isset($sco->mastery_score) && is_numeric($sco->mastery_score)) {
if ($score != '') { // $score is correctly initialized w/ an empty string, see above
if ($score >= trim($sco->mastery_score)) {
$lessonstatus = 'passed';
} else {
$lessonstatus = 'failed';
}
}
}
$id = scorm_insert_track($aiccuser->id, $scorm->id, $sco->id, $attempt, 'cmi.core.lesson_status', $lessonstatus);
}
}
}
echo "error=0\r\nerror_text=Successful\r\n";
} else if ($status == 'Terminated') {
echo "error=1\r\nerror_text=Terminated\r\n";
} else {
echo "error=1\r\nerror_text=Not Initialized\r\n";
}
break;
case 'putcomments':
if ($status == 'Running') {
echo "error=0\r\nerror_text=Successful\r\n";
} else if ($status == 'Terminated') {
echo "error=1\r\nerror_text=Terminated\r\n";
} else {
echo "error=1\r\nerror_text=Not Initialized\r\n";
}
break;
case 'putinteractions':
if ($status == 'Running') {
echo "error=0\r\nerror_text=Successful\r\n";
} else if ($status == 'Terminated') {
echo "error=1\r\nerror_text=Terminated\r\n";
} else {
echo "error=1\r\nerror_text=Not Initialized\r\n";
}
break;
case 'putobjectives':
if ($status == 'Running') {
echo "error=0\r\nerror_text=Successful\r\n";
} else if ($status == 'Terminated') {
echo "error=1\r\nerror_text=Terminated\r\n";
} else {
echo "error=1\r\nerror_text=Not Initialized\r\n";
}
break;
case 'putpath':
if ($status == 'Running') {
echo "error=0\r\nerror_text=Successful\r\n";
} else if ($status == 'Terminated') {
echo "error=1\r\nerror_text=Terminated\r\n";
} else {
echo "error=1\r\nerror_text=Not Initialized\r\n";
}
break;
case 'putperformance':
if ($status == 'Running') {
echo "error=0\r\nerror_text=Successful\r\n";
} else if ($status == 'Terminated') {
echo "error=1\r\nerror_text=Terminated\r\n";
} else {
echo "error=1\r\nerror_text=Not Initialized\r\n";
}
break;
case 'exitau':
if ($status == 'Running') {
if (isset($scormsession->sessiontime) && ($scormsession->sessiontime != '')) {
if ($track = $DB->get_record('scorm_scoes_track', array("userid"=>$aiccuser->id,
"scormid"=>$scorm->id,
"scoid"=>$sco->id,
"attempt"=>$attempt,
"element"=>'cmi.core.total_time'))) {
// Add session_time to total_time
$value = scorm_add_time($track->value, $scormsession->sessiontime);
$track->value = $value;
$track->timemodified = time();
$DB->update_record('scorm_scoes_track', $track);
} else {
$track = new stdClass();
$track->userid = $aiccuser->id;
$track->scormid = $scorm->id;
$track->scoid = $sco->id;
$track->element = 'cmi.core.total_time';
$track->value = $scormsession->sessiontime;
$track->attempt = $attempt;
$track->timemodified = time();
$id = $DB->insert_record('scorm_scoes_track', $track);
}
scorm_update_grades($scorm, $aiccuser->id);
}
$scormsession->scormstatus = 'Terminated';
$scormsession->session_time = '';
echo "error=0\r\nerror_text=Successful\r\n";
} else if ($status == 'Terminated') {
echo "error=1\r\nerror_text=Terminated\r\n";
} else {
echo "error=1\r\nerror_text=Not Initialized\r\n";
}
break;
default:
echo "error=1\r\nerror_text=Invalid Command\r\n";
break;
}
}
} else {
if (empty($command)) {
echo "error=1\r\nerror_text=Invalid Command\r\n";
} else {
echo "error=3\r\nerror_text=Invalid Session ID\r\n";
}
}
if (empty($cfg_scorm->allowaicchacp)) {
$SESSION->scorm = $scormsession;
} else {
$scormsession->timemodified = time();
$DB->update_record('scorm_aicc_session', $scormsession);
}
$aiccresponse = ob_get_contents();
scorm_debug_log_write("aicc", "HACP Response:\r\n$aiccresponse", $scoid);
ob_end_flush();