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Differences Between: [Versions 39 and 401] [Versions 39 and 402] [Versions 39 and 403]

   1  <?php
   2  // This file is part of Moodle - http://moodle.org/
   3  //
   4  // Moodle is free software: you can redistribute it and/or modify
   5  // it under the terms of the GNU General Public License as published by
   6  // the Free Software Foundation, either version 3 of the License, or
   7  // (at your option) any later version.
   8  //
   9  // Moodle is distributed in the hope that it will be useful,
  10  // but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12  // GNU General Public License for more details.
  13  //
  14  // You should have received a copy of the GNU General Public License
  15  // along with Moodle.  If not, see <http://www.gnu.org/licenses/>.
  16  
  17  // Prevent Caching Headers.
  18  header("Expires: Mon, 26 Jul 1997 05:00:00 GMT");
  19  header("Cache-Control: no-cache");
  20  header("Pragma: no-cache");
  21  
  22  require_once('../../config.php');
  23  require_once($CFG->dirroot.'/mod/scorm/lib.php');
  24  require_once($CFG->dirroot.'/mod/scorm/locallib.php');
  25  require_once($CFG->dirroot.'/mod/scorm/datamodels/aicclib.php');
  26  
  27  foreach ($_POST as $key => $value) {
  28      $tempkey = strtolower($key);
  29      $_POST[$tempkey] = $value;
  30  }
  31  
  32  $command = required_param('command', PARAM_ALPHA);
  33  $sessionid = required_param('session_id', PARAM_ALPHANUM);
  34  $aiccdata = optional_param('aicc_data', '', PARAM_RAW);
  35  
  36  $cfgscorm = get_config('scorm');
  37  
  38  $url = new moodle_url('/mod/scorm/aicc.php', array('command' => $command, 'session_id' => $sessionid));
  39  if ($aiccdata !== 0) {
  40      $url->param('aicc_data', $aiccdata);
  41  }
  42  $PAGE->set_url($url);
  43  
  44  if (empty($cfgscorm->allowaicchacp)) {
  45      require_login();
  46      if (!confirm_sesskey($sessionid)) {
  47          print_error('invalidsesskey');
  48      }
  49      $aiccuser = $USER;
  50      $scormsession = $SESSION->scorm;
  51  } else {
  52      $scormsession = scorm_aicc_confirm_hacp_session($sessionid);
  53      if (empty($scormsession)) {
  54          print_error('invalidhacpsession', 'scorm');
  55      }
  56      $aiccuser = $DB->get_record('user', array('id' => $scormsession->userid), 'id,username,lastname,firstname', MUST_EXIST);
  57  }
  58  
  59  if (!empty($command)) {
  60      $command = strtolower($command);
  61  
  62      if (isset($scormsession->scoid)) {
  63          $scoid = $scormsession->scoid;
  64      } else {
  65          print_error('cannotcallscript');
  66      }
  67      $mode = 'normal';
  68      if (isset($scormsession->scormmode)) {
  69          $mode = $scormsession->scormmode;
  70      }
  71      $status = 'Not Initialized';
  72      if (isset($scormsession->scormstatus)) {
  73          $status = $scormsession->scormstatus;
  74      }
  75      if (isset($scormsession->attempt)) {
  76          $attempt = $scormsession->attempt;
  77      } else {
  78          $attempt = 1;
  79      }
  80  
  81      if ($sco = scorm_get_sco($scoid, SCO_ONLY)) {
  82          if (!$scorm = $DB->get_record('scorm', array('id' => $sco->scorm))) {
  83              print_error('cannotcallscript');
  84          }
  85      } else {
  86          print_error('cannotcallscript');
  87      }
  88      $aiccrequest = "MOODLE scoid: $scoid"
  89                   . "\r\nMOODLE mode: $mode"
  90                   . "\r\nMOODLE status: $status"
  91                   . "\r\nMOODLE attempt: $attempt"
  92                   . "\r\nAICC sessionid: $sessionid"
  93                   . "\r\nAICC command: $command"
  94                   . "\r\nAICC aiccdata:\r\n$aiccdata";
  95      scorm_debug_log_write("aicc", "HACP Request:\r\n$aiccrequest", $scoid);
  96      ob_start();
  97  
  98      if ($scorm = $DB->get_record('scorm', array('id' => $sco->scorm))) {
  99          switch ($command) {
 100              case 'getparam':
 101                  if ($status == 'Not Initialized') {
 102                      $scormsession->scormstatus = 'Running';
 103                      $status = 'Running';
 104                  }
 105                  if ($status != 'Running') {
 106                      echo "error=101\r\nerror_text=Terminated\r\n";
 107                  } else {
 108                      if ($usertrack = scorm_get_tracks($scoid, $aiccuser->id, $attempt)) {
 109                          $userdata = $usertrack;
 110                      } else {
 111                          $userdata->status = '';
 112                          $userdata->score_raw = '';
 113                      }
 114                      $aiccuserid = get_config('scorm', 'aiccuserid');
 115                      if (!empty($aiccuserid)) {
 116                          $userdata->student_id = $aiccuser->id;
 117                      } else {
 118                          $userdata->student_id = $aiccuser->username;
 119                      }
 120                      $userdata->student_name = $aiccuser->lastname .', '. $aiccuser->firstname;
 121                      $userdata->mode = $mode;
 122                      if ($userdata->mode == 'normal') {
 123                          $userdata->credit = 'credit';
 124                      } else {
 125                          $userdata->credit = 'no-credit';
 126                      }
 127  
 128                      if ($sco = scorm_get_sco($scoid)) {
 129                          $userdata->course_id = $sco->identifier;
 130                          $userdata->datafromlms = isset($sco->datafromlms) ? $sco->datafromlms : '';
 131                          $userdata->mastery_score = isset($sco->mastery_score) && is_numeric($sco->mastery_score) ?
 132                                                          trim($sco->mastery_score) : '';
 133                          $userdata->max_time_allowed = isset($sco->max_time_allowed) ? $sco->max_time_allowed : '';
 134                          $userdata->time_limit_action = isset($sco->time_limit_action) ? $sco->time_limit_action : '';
 135  
 136                          echo "error=0\r\nerror_text=Successful\r\naicc_data=";
 137                          echo "[Core]\r\n";
 138                          echo 'Student_ID='.$userdata->student_id."\r\n";
 139                          echo 'Student_Name='.$userdata->student_name."\r\n";
 140                          if (isset($userdata->{'cmi.core.lesson_location'})) {
 141                              echo 'Lesson_Location='.$userdata->{'cmi.core.lesson_location'}."\r\n";
 142                          } else {
 143                              echo 'Lesson_Location='."\r\n";
 144                          }
 145                          echo 'Credit='.$userdata->credit."\r\n";
 146                          if (isset($userdata->status)) {
 147                              if ($userdata->status == '') {
 148                                  $userdata->entry = ', ab-initio';
 149                              } else {
 150                                  if (isset($userdata->{'cmi.core.exit'}) && ($userdata->{'cmi.core.exit'} == 'suspend')) {
 151                                      $userdata->entry = ', resume';
 152                                  } else {
 153                                      $userdata->entry = '';
 154                                  }
 155                              }
 156                          }
 157                          if (isset($userdata->{'cmi.core.lesson_status'})) {
 158                              echo 'Lesson_Status='.$userdata->{'cmi.core.lesson_status'}.$userdata->entry."\r\n";
 159                              $scormsession->scorm_lessonstatus = $userdata->{'cmi.core.lesson_status'};
 160                          } else {
 161                              echo 'Lesson_Status=not attempted'.$userdata->entry."\r\n";
 162                              $scormsession->scorm_lessonstatus = 'not attempted';
 163                          }
 164                          if (isset($userdata->{'cmi.core.score.raw'})) {
 165                              $max = '';
 166                              $min = '';
 167                              if (isset($userdata->{'cmi.core.score.max'}) && !empty($userdata->{'cmi.core.score.max'})) {
 168                                  $max = ', '.$userdata->{'cmi.core.score.max'};
 169                                  if (isset($userdata->{'cmi.core.score.min'}) && !empty($userdata->{'cmi.core.score.min'})) {
 170                                      $min = ', '.$userdata->{'cmi.core.score.min'};
 171                                  }
 172                              }
 173                              echo 'Score='.$userdata->{'cmi.core.score.raw'}.$max.$min."\r\n";
 174                          } else {
 175                              echo 'Score='."\r\n";
 176                          }
 177                          if (isset($userdata->{'cmi.core.total_time'})) {
 178                              echo 'Time='.$userdata->{'cmi.core.total_time'}."\r\n";
 179                          } else {
 180                              echo 'Time='.'00:00:00'."\r\n";
 181                          }
 182                          echo 'Lesson_Mode='.$userdata->mode."\r\n";
 183                          if (isset($userdata->{'cmi.suspend_data'})) {
 184                              echo "[Core_Lesson]\r\n".rawurldecode($userdata->{'cmi.suspend_data'})."\r\n";
 185                          } else {
 186                              echo "[Core_Lesson]\r\n";
 187                          }
 188                          echo "[Core_Vendor]\r\n".$userdata->datafromlms."\r\n";
 189                          echo "[Evaluation]\r\nCourse_ID = {".$userdata->course_id."}\r\n";
 190                          echo "[Student_Data]\r\n";
 191                          echo 'Mastery_Score='.$userdata->mastery_score."\r\n";
 192                          echo 'Max_Time_Allowed='.$userdata->max_time_allowed."\r\n";
 193                          echo 'Time_Limit_Action='.$userdata->time_limit_action."\r\n";
 194                      } else {
 195                          print_error('cannotfindsco', 'scorm');
 196                      }
 197                  }
 198              break;
 199              case 'putparam':
 200                  if ($status == 'Running') {
 201                      if (! $cm = get_coursemodule_from_instance("scorm", $scorm->id, $scorm->course)) {
 202                          echo "error=1\r\nerror_text=Unknown\r\n"; // No one must see this error message if not hacked.
 203                      }
 204                      $savetrack = has_capability('mod/scorm:savetrack', context_module::instance($cm->id), $aiccuser->id);
 205                      if (!empty($aiccdata) && $savetrack) {
 206                          $initlessonstatus = 'not attempted';
 207                          $lessonstatus = 'not attempted';
 208                          if (isset($scormsession->scorm_lessonstatus)) {
 209                              $initlessonstatus = $scormsession->scorm_lessonstatus;
 210                          }
 211                          $score = '';
 212                          $datamodel['lesson_location'] = 'cmi.core.lesson_location';
 213                          $datamodel['lesson_status'] = 'cmi.core.lesson_status';
 214                          $datamodel['score'] = 'cmi.core.score.raw';
 215                          $datamodel['time'] = 'cmi.core.session_time';
 216                          $datamodel['[core_lesson]'] = 'cmi.suspend_data';
 217                          $datamodel['[comments]'] = 'cmi.comments';
 218                          $datarows = explode("\r\n", $aiccdata);
 219                          reset($datarows);
 220                          foreach ($datarows as $datarow) {
 221                              if (($equal = strpos($datarow, '=')) !== false) {
 222                                  $element = strtolower(trim(substr($datarow, 0, $equal)));
 223                                  $value = trim(substr($datarow, $equal + 1));
 224                                  if (isset($datamodel[$element])) {
 225                                      $element = $datamodel[$element];
 226                                      switch ($element) {
 227                                          case 'cmi.core.lesson_location':
 228                                              $id = scorm_insert_track($aiccuser->id, $scorm->id, $sco->id,
 229                                                                          $attempt, $element, $value);
 230                                          break;
 231                                          case 'cmi.core.lesson_status':
 232                                              $statuses = array(
 233                                                         'passed' => 'passed',
 234                                                         'completed' => 'completed',
 235                                                         'failed' => 'failed',
 236                                                         'incomplete' => 'incomplete',
 237                                                         'browsed' => 'browsed',
 238                                                         'not attempted' => 'not attempted',
 239                                                         'p' => 'passed',
 240                                                         'c' => 'completed',
 241                                                         'f' => 'failed',
 242                                                         'i' => 'incomplete',
 243                                                         'b' => 'browsed',
 244                                                         'n' => 'not attempted'
 245                                                         );
 246                                              $exites = array(
 247                                                         'logout' => 'logout',
 248                                                         'time-out' => 'time-out',
 249                                                         'suspend' => 'suspend',
 250                                                         'l' => 'logout',
 251                                                         't' => 'time-out',
 252                                                         's' => 'suspend',
 253                                                         );
 254                                              $values = explode(',', $value);
 255                                              $value = '';
 256                                              if (count($values) > 1) {
 257                                                  $value = trim(strtolower($values[1]));
 258                                                  $value = $value[0];
 259                                                  if (isset($exites[$value])) {
 260                                                      $value = $exites[$value];
 261                                                  }
 262                                              }
 263                                              if (empty($value) || isset($exites[$value])) {
 264                                                  $subelement = 'cmi.core.exit';
 265                                                  $id = scorm_insert_track($aiccuser->id, $scorm->id, $sco->id,
 266                                                                              $attempt, $subelement, $value);
 267                                              }
 268                                              $value = trim(strtolower($values[0]));
 269                                              $value = $value[0];
 270                                              if (isset($statuses[$value]) && ($mode == 'normal')) {
 271                                                  $value = $statuses[$value];
 272                                                  $id = scorm_insert_track($aiccuser->id, $scorm->id, $sco->id,
 273                                                                              $attempt, $element, $value);
 274                                              }
 275                                              $lessonstatus = $value;
 276                                          break;
 277                                          case 'cmi.core.score.raw':
 278                                              $values = explode(',', $value);
 279                                              if ((count($values) > 1) && ($values[1] >= $values[0]) && is_numeric($values[1])) {
 280                                                  $subelement = 'cmi.core.score.max';
 281                                                  $value = trim($values[1]);
 282                                                  $id = scorm_insert_track($aiccuser->id, $scorm->id, $sco->id,
 283                                                                              $attempt, $subelement, $value);
 284                                                  if ((count($values) == 3) && ($values[2] <= $values[0]) && is_numeric($values[2])) {
 285                                                      $subelement = 'cmi.core.score.min';
 286                                                      $value = trim($values[2]);
 287                                                      $id = scorm_insert_track($aiccuser->id, $scorm->id, $sco->id,
 288                                                                                  $attempt, $subelement, $value);
 289                                                  }
 290                                              }
 291  
 292                                              $value = '';
 293                                              if (is_numeric($values[0])) {
 294                                                  $value = trim($values[0]);
 295                                                  $id = scorm_insert_track($aiccuser->id, $scorm->id, $sco->id,
 296                                                                              $attempt, $element, $value);
 297                                              }
 298                                              $score = $value;
 299                                          break;
 300                                          case 'cmi.core.session_time':
 301                                               $scormsession->sessiontime = $value;
 302                                          break;
 303                                      }
 304                                  }
 305                              } else {
 306                                  if (isset($datamodel[strtolower(trim($datarow))])) {
 307                                      $element = $datamodel[strtolower(trim($datarow))];
 308                                      $value = '';
 309                                      while ((($datarow = current($datarows)) !== false) && (substr($datarow, 0, 1) != '[')) {
 310                                          $value .= $datarow."\r\n";
 311                                          next($datarows);
 312                                      }
 313                                      $value = rawurlencode($value);
 314                                      $id = scorm_insert_track($aiccuser->id, $scorm->id, $sco->id, $attempt, $element, $value);
 315                                  }
 316                              }
 317                          }
 318                          if (($mode == 'browse') && ($initlessonstatus == 'not attempted')) {
 319                              $lessonstatus = 'browsed';
 320                              $id = scorm_insert_track($aiccuser->id, $scorm->id, $sco->id,
 321                                                          $attempt, 'cmi.core.lesson_status', 'browsed');
 322                          }
 323                          if ($mode == 'normal') {
 324                              if ($sco = scorm_get_sco($scoid)) {
 325                                  if (isset($sco->mastery_score) && is_numeric($sco->mastery_score)) {
 326                                      if ($score != '') { // Score is correctly initialized w/ an empty string, see above.
 327                                          if ($score >= trim($sco->mastery_score)) {
 328                                              $lessonstatus = 'passed';
 329                                          } else {
 330                                              $lessonstatus = 'failed';
 331                                          }
 332                                      }
 333                                  }
 334                                  $id = scorm_insert_track($aiccuser->id, $scorm->id, $sco->id,
 335                                                              $attempt, 'cmi.core.lesson_status', $lessonstatus);
 336                              }
 337                          }
 338                      }
 339                      echo "error=0\r\nerror_text=Successful\r\n";
 340                  } else if ($status == 'Terminated') {
 341                      echo "error=1\r\nerror_text=Terminated\r\n";
 342                  } else {
 343                      echo "error=1\r\nerror_text=Not Initialized\r\n";
 344                  }
 345              break;
 346              case 'putcomments':
 347                  if ($status == 'Running') {
 348                      echo "error=0\r\nerror_text=Successful\r\n";
 349                  } else if ($status == 'Terminated') {
 350                      echo "error=1\r\nerror_text=Terminated\r\n";
 351                  } else {
 352                      echo "error=1\r\nerror_text=Not Initialized\r\n";
 353                  }
 354              break;
 355              case 'putinteractions':
 356                  if ($status == 'Running') {
 357                      echo "error=0\r\nerror_text=Successful\r\n";
 358                  } else if ($status == 'Terminated') {
 359                      echo "error=1\r\nerror_text=Terminated\r\n";
 360                  } else {
 361                      echo "error=1\r\nerror_text=Not Initialized\r\n";
 362                  }
 363              break;
 364              case 'putobjectives':
 365                  if ($status == 'Running') {
 366                      echo "error=0\r\nerror_text=Successful\r\n";
 367                  } else if ($status == 'Terminated') {
 368                      echo "error=1\r\nerror_text=Terminated\r\n";
 369                  } else {
 370                      echo "error=1\r\nerror_text=Not Initialized\r\n";
 371                  }
 372              break;
 373              case 'putpath':
 374                  if ($status == 'Running') {
 375                      echo "error=0\r\nerror_text=Successful\r\n";
 376                  } else if ($status == 'Terminated') {
 377                      echo "error=1\r\nerror_text=Terminated\r\n";
 378                  } else {
 379                      echo "error=1\r\nerror_text=Not Initialized\r\n";
 380                  }
 381              break;
 382              case 'putperformance':
 383                  if ($status == 'Running') {
 384                      echo "error=0\r\nerror_text=Successful\r\n";
 385                  } else if ($status == 'Terminated') {
 386                      echo "error=1\r\nerror_text=Terminated\r\n";
 387                  } else {
 388                      echo "error=1\r\nerror_text=Not Initialized\r\n";
 389                  }
 390              break;
 391              case 'exitau':
 392                  if ($status == 'Running') {
 393                      if (isset($scormsession->sessiontime) && ($scormsession->sessiontime != '')) {
 394                          if ($track = $DB->get_record('scorm_scoes_track', array("userid" => $aiccuser->id,
 395                                                                                  "scormid" => $scorm->id,
 396                                                                                  "scoid" => $sco->id,
 397                                                                                  "attempt" => $attempt,
 398                                                                                  "element" => 'cmi.core.total_time'))) {
 399                              // Add session_time to total_time.
 400                              $value = scorm_add_time($track->value, $scormsession->sessiontime);
 401                              $track->value = $value;
 402                              $track->timemodified = time();
 403                              $DB->update_record('scorm_scoes_track', $track);
 404                          } else {
 405                              $track = new stdClass();
 406                              $track->userid = $aiccuser->id;
 407                              $track->scormid = $scorm->id;
 408                              $track->scoid = $sco->id;
 409                              $track->element = 'cmi.core.total_time';
 410                              $track->value = $scormsession->sessiontime;
 411                              $track->attempt = $attempt;
 412                              $track->timemodified = time();
 413                              $id = $DB->insert_record('scorm_scoes_track', $track);
 414                          }
 415                          scorm_update_grades($scorm, $aiccuser->id);
 416                      }
 417                      $scormsession->scormstatus = 'Terminated';
 418                      $scormsession->session_time = '';
 419                      echo "error=0\r\nerror_text=Successful\r\n";
 420                  } else if ($status == 'Terminated') {
 421                      echo "error=1\r\nerror_text=Terminated\r\n";
 422                  } else {
 423                      echo "error=1\r\nerror_text=Not Initialized\r\n";
 424                  }
 425              break;
 426              default:
 427                  echo "error=1\r\nerror_text=Invalid Command\r\n";
 428              break;
 429          }
 430      }
 431  } else {
 432      if (empty($command)) {
 433          echo "error=1\r\nerror_text=Invalid Command\r\n";
 434      } else {
 435          echo "error=3\r\nerror_text=Invalid Session ID\r\n";
 436      }
 437  }
 438  if (empty($cfgscorm->allowaicchacp)) {
 439      $SESSION->scorm = $scormsession;
 440  } else {
 441      $scormsession->timemodified = time();
 442      $DB->update_record('scorm_aicc_session', $scormsession);
 443  }
 444  
 445  $aiccresponse = ob_get_contents();
 446  scorm_debug_log_write("aicc", "HACP Response:\r\n$aiccresponse", $scoid);
 447  ob_end_flush();