mod/scorm/datamodels/scormlib.php

   1 <?php
   2 function scorm_get_resources($blocks) {
   3     $resources = array();
   4     foreach ($blocks as $block) {
   5         if ($block['name'] == 'RESOURCES') {
   6             foreach ($block['children'] as $resource) {
   7                 if ($resource['name'] == 'RESOURCE') {
   8                     $resources[addslashes($resource['attrs']['IDENTIFIER'])] = $resource['attrs'];
   9                 }
  10             }
  11         }
  12     }
  13     return $resources;
  14 }
  15
  16 function scorm_get_manifest($blocks,$scoes) {
  17     static $parents = array();
  18     static $resources;
  19
  20     static $manifest;
  21     static $organization;
  22
  23     if (count($blocks) > 0) {
  24         foreach ($blocks as $block) {
  25             switch ($block['name']) {
  26                 case 'METADATA':
  27                     if (isset($block['children'])) {
  28                         foreach ($block['children'] as $metadata) {
  29                             if ($metadata['name'] == 'SCHEMAVERSION') {
  30                                 if (empty($scoes->version)) {
  31                                     if (isset($metadata['tagData']) && (preg_match("/^(1\.2)$|^(CAM )?(1\.3)$/",$metadata['tagData'],$matches))) {
  32                                         $scoes->version = 'SCORM_'.$matches[count($matches)-1];
  33                                     } else {
  34                                         if (isset($metadata['tagData']) && (preg_match("/^2004 3rd Edition$/",$metadata['tagData'],$matches))) {
  35                                             $scoes->version = 'SCORM_1.3';
  36                                         } else {
  37                                             $scoes->version = 'SCORM_1.2';
  38                                         }
  39                                     }
  40                                 }
  41                             }
  42                         }
  43                     }
  44                 break;
  45                 case 'MANIFEST':
  46                     $manifest = addslashes($block['attrs']['IDENTIFIER']);
  47                     $organization = '';
  48                     $resources = array();
  49                     $resources = scorm_get_resources($block['children']);
  50                     $scoes = scorm_get_manifest($block['children'],$scoes);
  51                     if (count($scoes->elements) <= 0) {
  52                         foreach ($resources as $item => $resource) {
  53                             if (!empty($resource['HREF'])) {
  54                                 $sco = new stdClass();
  55                                 $sco->identifier = $item;
  56                                 $sco->title = $item;
  57                                 $sco->parent = '/';
  58                                 $sco->launch = addslashes($resource['HREF']);
  59                                 $sco->scormtype = addslashes($resource['ADLCP:SCORMTYPE']);
  60                                 $scoes->elements[$manifest][$organization][$item] = $sco;
  61                             }
  62                         }
  63                     }
  64                 break;
  65                 case 'ORGANIZATIONS':
  66                     if (!isset($scoes->defaultorg) && isset($block['attrs']['DEFAULT'])) {
  67                         $scoes->defaultorg = addslashes($block['attrs']['DEFAULT']);
  68                     }
  69                     $scoes = scorm_get_manifest($block['children'],$scoes);
  70                 break;
  71                 case 'ORGANIZATION':
  72                     $identifier = addslashes($block['attrs']['IDENTIFIER']);
  73                     $organization = '';
  74                     $scoes->elements[$manifest][$organization][$identifier]->identifier = $identifier;
  75                     $scoes->elements[$manifest][$organization][$identifier]->parent = '/';
  76                     $scoes->elements[$manifest][$organization][$identifier]->launch = '';
  77                     $scoes->elements[$manifest][$organization][$identifier]->scormtype = '';
  78
  79                     $parents = array();
  80                     $parent = new stdClass();
  81                     $parent->identifier = $identifier;
  82                     $parent->organization = $organization;
  83                     array_push($parents, $parent);
  84                     $organization = $identifier;
  85
  86                     $scoes = scorm_get_manifest($block['children'],$scoes);
  87
  88                     array_pop($parents);
  89                 break;
  90                 case 'ITEM':
  91                     $parent = array_pop($parents);
  92                     array_push($parents, $parent);
  93
  94                     $identifier = addslashes($block['attrs']['IDENTIFIER']);
  95                     $scoes->elements[$manifest][$organization][$identifier]->identifier = $identifier;
  96                     $scoes->elements[$manifest][$organization][$identifier]->parent = $parent->identifier;
  97                     if (!isset($block['attrs']['ISVISIBLE'])) {
  98                         $block['attrs']['ISVISIBLE'] = 'true';
  99                     }
 100                     $scoes->elements[$manifest][$organization][$identifier]->isvisible = addslashes($block['attrs']['ISVISIBLE']);
 101                     if (!isset($block['attrs']['PARAMETERS'])) {
 102                         $block['attrs']['PARAMETERS'] = '';
 103                     }
 104                     $scoes->elements[$manifest][$organization][$identifier]->parameters = addslashes($block['attrs']['PARAMETERS']);
 105                     if (!isset($block['attrs']['IDENTIFIERREF'])) {
 106                         $scoes->elements[$manifest][$organization][$identifier]->launch = '';
 107                         $scoes->elements[$manifest][$organization][$identifier]->scormtype = 'asset';
 108                     } else {
 109                         $idref = addslashes($block['attrs']['IDENTIFIERREF']);
 110                         $base = '';
 111                         if (isset($resources[$idref]['XML:BASE'])) {
 112                             $base = $resources[$idref]['XML:BASE'];
 113                         }
 114                         $scoes->elements[$manifest][$organization][$identifier]->launch = addslashes($base.$resources[$idref]['HREF']);
 115                         if (empty($resources[$idref]['ADLCP:SCORMTYPE'])) {
 116                             $resources[$idref]['ADLCP:SCORMTYPE'] = 'asset';
 117                         }
 118                         $scoes->elements[$manifest][$organization][$identifier]->scormtype = addslashes($resources[$idref]['ADLCP:SCORMTYPE']);
 119                     }
 120
 121                     $parent = new stdClass();
 122                     $parent->identifier = $identifier;
 123                     $parent->organization = $organization;
 124                     array_push($parents, $parent);
 125
 126                     $scoes = scorm_get_manifest($block['children'],$scoes);
 127
 128                     array_pop($parents);
 129                 break;
 130                 case 'TITLE':
 131                     $parent = array_pop($parents);
 132                     array_push($parents, $parent);
 133                     if (!isset($block['tagData'])) {
 134                         $block['tagData'] = '';
 135                     }
 136                     $scoes->elements[$manifest][$parent->organization][$parent->identifier]->title = addslashes($block['tagData']);
 137                 break;
 138                 case 'ADLCP:PREREQUISITES':
 139                     if ($block['attrs']['TYPE'] == 'aicc_script') {
 140                         $parent = array_pop($parents);
 141                         array_push($parents, $parent);
 142                         if (!isset($block['tagData'])) {
 143                             $block['tagData'] = '';
 144                         }
 145                         $scoes->elements[$manifest][$parent->organization][$parent->identifier]->prerequisites = addslashes($block['tagData']);
 146                     }
 147                 break;
 148                 case 'ADLCP:MAXTIMEALLOWED':
 149                     $parent = array_pop($parents);
 150                     array_push($parents, $parent);
 151                     if (!isset($block['tagData'])) {
 152                         $block['tagData'] = '';
 153                     }
 154                     $scoes->elements[$manifest][$parent->organization][$parent->identifier]->maxtimeallowed = addslashes($block['tagData']);
 155                 break;
 156                 case 'ADLCP:TIMELIMITACTION':
 157                     $parent = array_pop($parents);
 158                     array_push($parents, $parent);
 159                     if (!isset($block['tagData'])) {
 160                         $block['tagData'] = '';
 161                     }
 162                     $scoes->elements[$manifest][$parent->organization][$parent->identifier]->timelimitaction = addslashes($block['tagData']);
 163                 break;
 164                 case 'ADLCP:DATAFROMLMS':
 165                     $parent = array_pop($parents);
 166                     array_push($parents, $parent);
 167                     if (!isset($block['tagData'])) {
 168                         $block['tagData'] = '';
 169                     }
 170                     $scoes->elements[$manifest][$parent->organization][$parent->identifier]->datafromlms = addslashes($block['tagData']);
 171                 break;
 172                 case 'ADLCP:MASTERYSCORE':
 173                     $parent = array_pop($parents);
 174                     array_push($parents, $parent);
 175                     if (!isset($block['tagData'])) {
 176                         $block['tagData'] = '';
 177                     }
 178                     $scoes->elements[$manifest][$parent->organization][$parent->identifier]->masteryscore = addslashes($block['tagData']);
 179                 break;
 180                 case 'ADLCP:COMPLETIONTHRESHOLD':
 181                     $parent = array_pop($parents);
 182                     array_push($parents, $parent);
 183                     if (!isset($block['tagData'])) {
 184                         $block['tagData'] = '';
 185                     }
 186                     $scoes->elements[$manifest][$parent->organization][$parent->identifier]->threshold = addslashes($block['tagData']);
 187                 break;
 188                 case 'ADLNAV:PRESENTATION':
 189                     $parent = array_pop($parents);
 190                     array_push($parents, $parent);
 191                     if (!empty($block['children'])) {
 192                         foreach ($block['children'] as $adlnav) {
 193                             if ($adlnav['name'] == 'ADLNAV:NAVIGATIONINTERFACE') {
 194                                 foreach ($adlnav['children'] as $adlnavInterface) {
 195                                     if ($adlnavInterface['name'] == 'ADLNAV:HIDELMSUI') {
 196                                         if ($adlnavInterface['tagData'] == 'continue') {
 197                                             $scoes->elements[$manifest][$parent->organization][$parent->identifier]->hidecontinue = 1;
 198                                         }
 199                                         if ($adlnavInterface['tagData'] == 'previous') {
 200                                             $scoes->elements[$manifest][$parent->organization][$parent->identifier]->hideprevious = 1;
 201                                         }
 202                                         if ($adlnavInterface['tagData'] == 'exit') {
 203                                             $scoes->elements[$manifest][$parent->organization][$parent->identifier]->hideexit = 1;
 204                                         }
 205                                         if ($adlnavInterface['tagData'] == 'exitAll') {
 206                                             $scoes->elements[$manifest][$parent->organization][$parent->identifier]->hideexitall = 1;
 207                                         }
 208                                         if ($adlnavInterface['tagData'] == 'abandon') {
 209                                             $scoes->elements[$manifest][$parent->organization][$parent->identifier]->hideabandon = 1;
 210                                         }
 211                                         if ($adlnavInterface['tagData'] == 'abandonAll') {
 212                                             $scoes->elements[$manifest][$parent->organization][$parent->identifier]->hideabandonall = 1;
 213                                         }
 214                                         if ($adlnavInterface['tagData'] == 'suspendAll') {
 215                                             $scoes->elements[$manifest][$parent->organization][$parent->identifier]->hidesuspendall = 1;
 216                                         }
 217                                     }
 218                                 }
 219                             }
 220                         }
 221                     }
 222                 break;
 223                 case 'IMSSS:SEQUENCING':
 224                     $parent = array_pop($parents);
 225                     array_push($parents, $parent);
 226                     if (!empty($block['children'])) {
 227                         foreach ($block['children'] as $sequencing) {
 228                             if ($sequencing['name']=='IMSSS:CONTROLMODE') {
 229                                 if (isset($sequencing['attrs']['CHOICE'])) {
 230                                     $scoes->elements[$manifest][$parent->organization][$parent->identifier]->choice = $sequencing['attrs']['CHOICE'] == 'true'?1:0;
 231                                 }
 232                                 if (isset($sequencing['attrs']['CHOICEEXIT'])) {
 233                                     $scoes->elements[$manifest][$parent->organization][$parent->identifier]->choiceexit = $sequencing['attrs']['CHOICEEXIT'] == 'true'?1:0;
 234                                 }
 235                                 if (isset($sequencing['attrs']['FLOW'])) {
 236                                     $scoes->elements[$manifest][$parent->organization][$parent->identifier]->flow = $sequencing['attrs']['FLOW'] == 'true'?1:0;
 237                                 }
 238                                 if (isset($sequencing['attrs']['FORWARDONLY'])) {
 239                                     $scoes->elements[$manifest][$parent->organization][$parent->identifier]->forwardonly = $sequencing['attrs']['FORWARDONLY'] == 'true'?1:0;
 240                                 }
 241                                 if (isset($sequencing['attrs']['USECURRENTATTEMPTOBJECTINFO'])) {
 242                                     $scoes->elements[$manifest][$parent->organization][$parent->identifier]->usecurrentattemptobjectinfo = $sequencing['attrs']['USECURRENTATTEMPTOBJECTINFO'] == 'true'?1:0;
 243                                 }
 244                                 if (isset($sequencing['attrs']['USECURRENTATTEMPTPROGRESSINFO'])) {
 245                                     $scoes->elements[$manifest][$parent->organization][$parent->identifier]->usecurrentattemptprogressinfo = $sequencing['attrs']['USECURRENTATTEMPTPROGRESSINFO'] == 'true'?1:0;
 246                                 }
 247                             }
 248                             if ($sequencing['name']=='ADLSEQ:CONSTRAINEDCHOICECONSIDERATIONS') {
 249                                 if (isset($sequencing['attrs']['CONSTRAINCHOICE'])) {
 250                                     $scoes->elements[$manifest][$parent->organization][$parent->identifier]->constrainChoice = $sequencing['attrs']['CONSTRAINCHOICE'] == 'true'?1:0;
 251                                 }
 252                                 if (isset($sequencing['attrs']['PREVENTACTIVATION'])) {
 253                                     $scoes->elements[$manifest][$parent->organization][$parent->identifier]->preventactivation = $sequencing['attrs']['PREVENTACTIVATION'] == 'true'?1:0;
 254                                 }
 255                             }
 256                             if ($sequencing['name']=='IMSSS:OBJECTIVES') {
 257                                 $objectives = array();
 258                                 foreach ($sequencing['children'] as $objective) {
 259                                     $objectivedata = new stdClass();
 260                                     $objectivedata->primaryobj = 0;
 261                                     switch ($objective['name']) {
 262                                         case 'IMSSS:PRIMARYOBJECTIVE':
 263                                             $objectivedata->primaryobj = 1;
 264                                         case 'IMSSS:OBJECTIVE':
 265                                             $objectivedata->satisfiedbymeasure = 0;
 266                                             if (isset($objective['attrs']['SATISFIEDBYMEASURE'])) {
 267                                                 $objectivedata->satisfiedbymeasure = $objective['attrs']['SATISFIEDBYMEASURE']== 'true'?1:0;
 268                                             }
 269                                             $objectivedata->objectiveid = '';
 270                                             if (isset($objective['attrs']['OBJECTIVEID'])) {
 271                                                 $objectivedata->objectiveid = $objective['attrs']['OBJECTIVEID'];
 272                                             }
 273                                             $objectivedata->minnormalizedmeasure = 1.0;
 274                                             if (!empty($objective['children'])) {
 275                                                 $mapinfos = array();
 276                                                 foreach ($objective['children'] as $objectiveparam) {
 277                                                     if ($objectiveparam['name']=='IMSSS:MINNORMALIZEDMEASURE') {
 278                                                         if (isset($objectiveparam['tagData'])) {
 279                                                                 $objectivedata->minnormalizedmeasure = $objectiveparam['tagData'];
 280                                                         } else {
 281                                                             $objectivedata->minnormalizedmeasure = 0;
 282                                                         }
 283                                                     }
 284                                                     if ($objectiveparam['name']=='IMSSS:MAPINFO') {
 285                                                         $mapinfo = new stdClass();
 286                                                         $mapinfo->targetobjectiveid = '';
 287                                                         if (isset($objectiveparam['attrs']['TARGETOBJECTIVEID'])) {
 288                                                             $mapinfo->targetobjectiveid = $objectiveparam['attrs']['TARGETOBJECTIVEID'];
 289                                                         }
 290                                                         $mapinfo->readsatisfiedstatus = 1;
 291                                                         if (isset($objectiveparam['attrs']['READSATISFIEDSTATUS'])) {
 292                                                             $mapinfo->readsatisfiedstatus = $objectiveparam['attrs']['READSATISFIEDSTATUS'] == 'true'?1:0;
 293                                                         }
 294                                                         $mapinfo->writesatisfiedstatus = 0;
 295                                                         if (isset($objectiveparam['attrs']['WRITESATISFIEDSTATUS'])) {
 296                                                             $mapinfo->writesatisfiedstatus = $objectiveparam['attrs']['WRITESATISFIEDSTATUS'] == 'true'?1:0;
 297                                                         }
 298                                                         $mapinfo->readnormalizemeasure = 1;
 299                                                         if (isset($objectiveparam['attrs']['READNORMALIZEDMEASURE'])) {
 300                                                             $mapinfo->readnormalizemeasure = $objectiveparam['attrs']['READNORMALIZEDMEASURE'] == 'true'?1:0;
 301                                                         }
 302                                                         $mapinfo->writenormalizemeasure = 0;
 303                                                         if (isset($objectiveparam['attrs']['WRITENORMALIZEDMEASURE'])) {
 304                                                             $mapinfo->writenormalizemeasure = $objectiveparam['attrs']['WRITENORMALIZEDMEASURE'] == 'true'?1:0;
 305                                                         }
 306                                                         array_push($mapinfos,$mapinfo);
 307                                                     }
 308                                                 }
 309                                                 if (!empty($mapinfos)) {
 310                                                     $objectivesdata->mapinfos = $mapinfos;
 311                                                 }
 312                                             }
 313                                         break;
 314                                     }
 315 //print_object($objectivedata);
 316                                     array_push($objectives,$objectivedata);
 317                                 }
 318                                 $scoes->elements[$manifest][$parent->organization][$parent->identifier]->objectives = $objectives;
 319                             }
 320                             if ($sequencing['name']=='IMSSS:LIMITCONDITIONS') {
 321                                 if (isset($sequencing['attrs']['ATTEMPTLIMIT'])) {
 322                                     $scoes->elements[$manifest][$parent->organization][$parent->identifier]->attemptLimit = $sequencing['attrs']['ATTEMPTLIMIT'];
 323                                 }
 324                                 if (isset($sequencing['attrs']['ATTEMPTABSOLUTEDURATIONLIMIT'])) {
 325                                     $scoes->elements[$manifest][$parent->organization][$parent->identifier]->attemptAbsoluteDurationLimit = $sequencing['attrs']['ATTEMPTABSOLUTEDURATIONLIMIT'];
 326                                 }
 327                             }
 328                             if ($sequencing['name']=='IMSSS:ROLLUPRULES') {
 329                                 if (isset($sequencing['attrs']['ROLLUPOBJECTIVESATISFIED'])) {
 330                                     $scoes->elements[$manifest][$parent->organization][$parent->identifier]->rollupobjectivesatisfied = $sequencing['attrs']['ROLLUPOBJECTIVESATISFIED'] == 'true'?1:0;;
 331                                 }
 332                                 if (isset($sequencing['attrs']['ROLLUPPROGRESSCOMPLETION'])) {
 333                                     $scoes->elements[$manifest][$parent->organization][$parent->identifier]->rollupprogresscompletion = $sequencing['attrs']['ROLLUPPROGRESSCOMPLETION'] == 'true'?1:0;
 334                                 }
 335                                 if (isset($sequencing['attrs']['OBJECTIVEMEASUREWEIGHT'])) {
 336                                     $scoes->elements[$manifest][$parent->organization][$parent->identifier]->objectivemeasureweight = $sequencing['attrs']['OBJECTIVEMEASUREWEIGHT'];
 337                                 }
 338
 339                                 if (!empty($sequencing['children'])){
 340                                     $rolluprules = array();
 341                                     foreach ($sequencing['children'] as $sequencingrolluprule) {
 342                                         if ($sequencingrolluprule['name']=='IMSSS:ROLLUPRULE' ) {
 343                                             $rolluprule = new stdClass();
 344                                             $rolluprule->childactivityset = 'all';
 345                                             if (isset($sequencingrolluprule['attrs']['CHILDACTIVITYSET'])) {
 346                                                 $rolluprule->childactivityset = $sequencingrolluprule['attrs']['CHILDACTIVITYSET'];
 347                                             }
 348                                             $rolluprule->minimumcount = 0;
 349                                             if (isset($sequencingrolluprule['attrs']['MINIMUMCOUNT'])) {
 350                                                 $rolluprule->minimumcount = $sequencingrolluprule['attrs']['MINIMUMCOUNT'];
 351                                             }
 352                                             $rolluprule->minimumpercent = 0.0000;
 353                                             if (isset($sequencingrolluprule['attrs']['MINIMUMPERCENT'])) {
 354                                                 $rolluprule->minimumpercent = $sequencingrolluprule['attrs']['MINIMUMPERCENT'];
 355                                             }
 356                                             if (!empty($sequencingrolluprule['children'])) {
 357                                                 foreach ($sequencingrolluprule['children'] as $rolluproleconditions) {
 358                                                     if ($rolluproleconditions['name']=='IMSSS:ROLLUPCONDITIONS') {
 359                                                         $conditions = array();
 360                                                         $rolluprule->conditioncombination = 'all';
 361                                                         if (isset($rolluproleconditions['attrs']['CONDITIONCOMBINATION'])) {
 362                                                             $rolluprule->conditioncombination = $rolluproleconditions['attrs']['CONDITIONCOMBINATION'];
 363                                                         }
 364                                                         foreach ($rolluproleconditions['children'] as $rolluprulecondition) {
 365                                                             if ($rolluprulecondition['name']=='IMSSS:ROLLUPCONDITION') {
 366                                                                 $condition = new stdClass();
 367                                                                 if (isset($rolluprulecondition['attrs']['CONDITION'])) {
 368                                                                     $condition->cond = $rolluprulecondition['attrs']['CONDITION'];
 369                                                                 }
 370                                                                 $condition->operator = 'noOp';
 371                                                                 if (isset($rolluprulecondition['attrs']['OPERATOR'])) {
 372                                                                     $condition->operator = $rolluprulecondition['attrs']['OPERATOR'];
 373                                                                 }
 374                                                                 array_push($conditions,$condition);
 375                                                             }
 376                                                         }
 377                                                         $rolluprule->conditions = $conditions;
 378                                                     }
 379                                                     if ($rolluproleconditions['name']=='IMSSS:ROLLUPACTION') {
 380                                                         $rolluprule->rollupruleaction = $rolluproleconditions['attrs']['ACTION'];
 381                                                     }
 382                                                 }
 383                                             }
 384                                             array_push($rolluprules, $rolluprule);
 385                                         }
 386                                     }
 387                                     $scoes->elements[$manifest][$parent->organization][$parent->identifier]->rolluprules = $rolluprules;
 388                                 }
 389                             }
 390
 391                             if ($sequencing['name']=='IMSSS:SEQUENCINGRULES') {
 392                                 if (!empty($sequencing['children'])) {
 393                                     $sequencingrules = array();
 394                                     foreach ($sequencing['children'] as $conditionrules) {
 395                                         $conditiontype = -1;
 396                                         switch($conditionrules['name']) {
 397                                             case 'IMSSS:PRECONDITIONRULE':
 398                                                 $conditiontype = 0;
 399                                             break;
 400                                             case 'IMSSS:POSTCONDITIONRULE':
 401                                                 $conditiontype = 1;
 402                                             break;
 403                                             case 'IMSSS:EXITCONDITIONRULE':
 404                                                 $conditiontype = 2;
 405                                             break;
 406                                         }
 407                                         if (!empty($conditionrules['children'])) {
 408                                             $sequencingrule = new stdClass();
 409                                             foreach ($conditionrules['children'] as $conditionrule) {
 410                                                 if ($conditionrule['name']=='IMSSS:RULECONDITIONS') {
 411                                                     $ruleconditions = array();
 412                                                     $sequencingrule->conditioncombination = 'all';
 413                                                     if (isset($conditionrule['attrs']['CONDITIONCOMBINATION'])) {
 414                                                         $sequencingrule->conditioncombination = $conditionrule['attrs']['CONDITIONCOMBINATION'];
 415                                                     }
 416                                                     foreach ($conditionrule['children'] as $rulecondition) {
 417                                                         if ($rulecondition['name']=='IMSSS:RULECONDITION') {
 418                                                             $condition = new stdClass();
 419                                                             if (isset($rulecondition['attrs']['CONDITION'])) {
 420                                                                 $condition->cond = $rulecondition['attrs']['CONDITION'];
 421                                                             }
 422                                                             $condition->operator = 'noOp';
 423                                                             if (isset($rulecondition['attrs']['OPERATOR'])) {
 424                                                                 $condition->operator = $rulecondition['attrs']['OPERATOR'];
 425                                                             }
 426                                                             $condition->measurethreshold = 0.0000;
 427                                                             if (isset($rulecondition['attrs']['MEASURETHRESHOLD'])) {
 428                                                                 $condition->measurethreshold = $rulecondition['attrs']['MEASURETHRESHOLD'];
 429                                                             }
 430                                                             $condition->referencedobjective = '';
 431                                                             if (isset($rulecondition['attrs']['REFERENCEDOBJECTIVE'])) {
 432                                                                 $condition->referencedobjective = $rulecondition['attrs']['REFERENCEDOBJECTIVE'];
 433                                                             }
 434                                                             array_push($ruleconditions,$condition);
 435                                                         }
 436                                                     }
 437                                                     $sequencingrule->ruleconditions = $ruleconditions;
 438                                                 }
 439                                                 if ($conditionrule['name']=='IMSSS:RULEACTION') {
 440                                                     $sequencingrule->action = $conditionrule['attrs']['ACTION'];
 441                                                 }
 442                                                 $sequencingrule->type = $conditiontype;
 443                                             }
 444                                             array_push($sequencingrules,$sequencingrule);
 445                                         }
 446                                     }
 447                                     $scoes->elements[$manifest][$parent->organization][$parent->identifier]->sequencingrules = $sequencingrules;
 448                                 }
 449                             }
 450                         }
 451                     }
 452                 break;
 453             }
 454         }
 455     }
 456     return $scoes;
 457 }
 458
 459 function scorm_parse_scorm($pkgdir,$scormid) {
 460     global $CFG;
 461
 462     $launch = 0;
 463     $manifestfile = $pkgdir.'/imsmanifest.xml';
 464
 465     if (is_file($manifestfile)) {
 466
 467         $xmltext = file_get_contents($manifestfile);
 468
 469         $pattern = '/&(?!\w{2,6};)/';
 470         $replacement = '&amp;';
 471         $xmltext = preg_replace($pattern, $replacement, $xmltext);
 472
 473         $objXML = new xml2Array();
 474         $manifests = $objXML->parse($xmltext);
 475 //print_object($manifests);
 476         $scoes = new stdClass();
 477         $scoes->version = '';
 478         $scoes = scorm_get_manifest($manifests,$scoes);
 479 //print_object($scoes);
 480         if (count($scoes->elements) > 0) {
 481             $olditems = get_records('scorm_scoes','scorm',$scormid);
 482             foreach ($scoes->elements as $manifest => $organizations) {
 483                 foreach ($organizations as $organization => $items) {
 484                     foreach ($items as $identifier => $item) {
 485                         // This new db mngt will support all SCORM future extensions
 486                         $newitem = new stdClass();
 487                         $newitem->scorm = $scormid;
 488                         $newitem->manifest = $manifest;
 489                         $newitem->organization = $organization;
 490                         $standarddatas = array('parent', 'identifier', 'launch', 'scormtype', 'title');
 491                         foreach ($standarddatas as $standarddata) {
 492                             if (isset($item->$standarddata)) {
 493                                 $newitem->$standarddata = addslashes($item->$standarddata);
 494                             }
 495                         }
 496
 497                         // Insert the new SCO, and retain the link between the old and new for later adjustment
 498                         $id = insert_record('scorm_scoes',$newitem);
 499                         if (!empty($olditems) && ($olditemid = scorm_array_search('identifier',$newitem->identifier,$olditems))) {
 500                             $olditems[$olditemid]->newid = $id;
 501                         }
 502
 503                         if ($optionaldatas = scorm_optionals_data($item,$standarddatas)) {
 504                             $data = new stdClass();
 505                             $data->scoid = $id;
 506                             foreach ($optionaldatas as $optionaldata) {
 507                                 if (isset($item->$optionaldata)) {
 508                                     $data->name =  $optionaldata;
 509                                     $data->value = addslashes($item->$optionaldata);
 510                                     $dataid = insert_record('scorm_scoes_data',$data);
 511                                 }
 512                             }
 513                         }
 514
 515                         if (isset($item->sequencingrules)) {
 516                             foreach($item->sequencingrules as $sequencingrule) {
 517                                 $rule = new stdClass();
 518                                 $rule->scoid = $id;
 519                                 $rule->ruletype = $sequencingrule->type;
 520                                 $rule->conditioncombination = $sequencingrule->conditioncombination;
 521                                 $rule->action = $sequencingrule->action;
 522                                 $ruleid = insert_record('scorm_seq_ruleconds',$rule);
 523                                 if (isset($sequencingrule->ruleconditions)) {
 524                                     foreach($sequencingrule->ruleconditions as $rulecondition) {
 525                                         $rulecond = new stdClass();
 526                                         $rulecond->scoid = $id;
 527                                         $rulecond->ruleconditionsid = $ruleid;
 528                                         $rulecond->referencedobjective = $rulecondition->referencedobjective;
 529                                         $rulecond->measurethreshold = $rulecondition->measurethreshold;
 530                                         $rulecond->cond = $rulecondition->cond;
 531                                         $rulecondid = insert_record('scorm_seq_rulecond',$rulecond);
 532                                     }
 533                                 }
 534                             }
 535                         }
 536
 537                         if (isset($item->rolluprules)) {
 538                             foreach($item->rolluprules as $rolluprule) {
 539                                 $rollup = new stdClass();
 540                                 $rollup->scoid =  $id;
 541                                 $rollup->childactivityset = $rolluprule->childactivityset;
 542                                 $rollup->minimumcount = $rolluprule->minimumcount;
 543                                 $rollup->minimumpercent = $rolluprule->minimumpercent;
 544                                 $rollup->rollupruleaction = $rolluprule->rollupruleaction;
 545                                 $rollup->conditioncombination = $rolluprule->conditioncombination;
 546
 547                                 $rollupruleid = insert_record('scorm_seq_rolluprule',$rollup);
 548                                 if (isset($rollup->conditions)) {
 549                                     foreach($rollup->conditions as $condition){
 550                                         $cond = new stdClass();
 551                                         $cond->scoid = $rollup->scoid;
 552                                         $cond->rollupruleid = $rollupruleid;
 553                                         $cond->operator = $condition->operator;
 554                                         $cond->cond = $condition->cond;
 555                                         $conditionid = insert_record('scorm_seq_rolluprulecond',$cond);
 556                                     }
 557                                 }
 558                             }
 559                         }
 560
 561                         if (isset($item->objectives)) {
 562                             foreach($item->objectives as $objective) {
 563                                 $obj = new stdClass();
 564                                 $obj->scoid = $id;
 565                                 $obj->primaryobj = $objective->primaryobj;
 566                                 $obj->satisfiedbumeasure = $objective->satisfiedbymeasure;
 567                                 $obj->objectiveid = $objective->objectiveid;
 568                                 $obj->minnormalizedmeasure = $objective->minnormalizedmeasure;
 569                                 $objectiveid = insert_record('scorm_seq_objective',$obj);
 570                                 if (isset($objective->mapinfos)) {
 571 //print_object($objective->mapinfos);
 572                                     foreach($objective->mapinfos as $objmapinfo) {
 573                                         $mapinfo = new stdClass();
 574                                         $mapinfo->scoid = $id;
 575                                         $mapinfo->objectiveid = $objectiveid;
 576                                         $mapinfo->targetobjectiveid = $objmapinfo->targetobjectiveid;
 577                                         $mapinfo->readsatisfiedstatus = $objmapinfo->readsatisfiedstatus;
 578                                         $mapinfo->writesatisfiedstatus = $objmapinfo->writesatisfiedstatus;
 579                                         $mapinfo->readnormalizedmeasure = $objmapinfo->readnormalizedmeasure;
 580                                         $mapinfo->writenormalizedmeasure = $objmapinfo->writenormalizedmeasure;
 581                                         $mapinfoid = insert_record('scorm_seq_mapinfo',$mapinfo);
 582                                     }
 583                                 }
 584                             }
 585                         }
 586 //print_object($item);
 587                         if (($launch == 0) && ((empty($scoes->defaultorg)) || ($scoes->defaultorg == $identifier))) {
 588                             $launch = $id;
 589                         }
 590                     }
 591                 }
 592             }
 593             if (!empty($olditems)) {
 594                 foreach($olditems as $olditem) {
 595                     delete_records('scorm_scoes','id',$olditem->id);
 596                     delete_records('scorm_scoes_data','scoid',$olditem->id);
 597                     if (isset($olditem->newid)) {
 598                         set_field('scorm_scoes_track', 'scoid', $olditem->newid, 'scoid', $olditem->id);
 599                     }
 600                     delete_records('scorm_scoes_track','scoid',$olditem->id);
 601                     delete_records('scorm_seq_objective','scoid',$olditem->id);
 602                     delete_records('scorm_seq_mapinfo','scoid',$olditem->id);
 603                     delete_records('scorm_seq_ruleconds','scoid',$olditem->id);
 604                     delete_records('scorm_seq_rulecond','scoid',$olditem->id);
 605                     delete_records('scorm_seq_rolluprule','scoid',$olditem->id);
 606                     delete_records('scorm_seq_rolluprulecond','scoid',$olditem->id);
 607                 }
 608             }
 609             set_field('scorm','version',$scoes->version,'id',$scormid);
 610         }
 611     }
 612
 613     return $launch;
 614 }
 615
 616 function scorm_optionals_data($item, $standarddata) {
 617     $result = array();
 618     $sequencingdata = array('sequencingrules','rolluprules','objectives');
 619     foreach ($item as $element => $value) {
 620         if (! in_array($element, $standarddata)) {
 621             if (! in_array($element, $sequencingdata)) {
 622                 $result[] = $element;
 623             }
 624         }
 625     }
 626     return $result;
 627 }
 628
 629 function scorm_is_leaf($sco) {
 630     if (get_record('scorm_scoes','scorm',$sco->scorm,'parent',$sco->identifier)) {
 631         return false;
 632     }
 633     return true;
 634 }
 635
 636 function scorm_get_parent($sco) {
 637     if ($sco->parent != '/') {
 638         if ($parent = get_record('scorm_scoes','scorm',$sco->scorm,'identifier',$sco->parent)) {
 639             return scorm_get_sco($parent->id);
 640         }
 641     }
 642     return null;
 643 }
 644
 645 function scorm_get_children($sco) {
 646     if ($children = get_records('scorm_scoes','scorm',$sco->scorm,'parent',$sco->identifier)) {//originally this said parent instead of childrean
 647         return $children;
 648     }
 649     return null;
 650 }
 651
 652 function scorm_get_available_children($sco){
 653     $res = get_record('scorm_scoes_track','scoid',$scoid,'userid',$userid,'element','availablechildren');
 654     if(!$res || $res == null){
 655         return false;
 656     }
 657     else{
 658         return unserialize($res->value);
 659     }
 660 }
 661
 662 function scorm_get_available_descendent($descend = array(),$sco){
 663     if($sco == null){
 664         return $descend;
 665     }
 666     else{
 667         $avchildren = scorm_get_available_children($sco);
 668         foreach($avchildren as $avchild){
 669             array_push($descend,$avchild);
 670         }
 671         foreach($avchildren as $avchild){
 672             scorm_get_available_descendent($descend,$avchild);
 673         }
 674     }
 675 }
 676
 677 function scorm_get_siblings($sco) {
 678     if ($siblings = get_records('scorm_scoes','scorm',$sco->scorm,'parent',$sco->parent)) {
 679         unset($siblings[$sco->id]);
 680         if (!empty($siblings)) {
 681             return $siblings;
 682         }
 683     }
 684     return null;
 685 }
 686
 687 function scorm_get_ancestors($sco) {
 688     if ($sco->parent != '/') {
 689         return array_push(scorm_get_ancestors(scorm_get_parent($sco)));
 690     } else {
 691         return $sco;
 692     }
 693 }
 694
 695 function scorm_get_preorder($preorder=array(),$sco) {
 696
 697
 698     if ($sco != null) {
 699         array_push($preorder,$sco);
 700         $children = scorm_get_children($sco);
 701         foreach ($children as $child){
 702             scorm_get_preorder($sco);
 703         }
 704     } else {
 705         return $preorder;
 706     }
 707 }
 708
 709 function scorm_find_common_ancestor($ancestors, $sco) {
 710     $pos = scorm_array_search('identifier',$sco->parent,$ancestors);
 711     if ($sco->parent != '/') {
 712         if ($pos === false) {
 713             return scorm_find_common_ancestor($ancestors,scorm_get_parent($sco));
 714         }
 715     }
 716     return $pos;
 717 }
 718
 719 /* Usage
 720  Grab some XML data, either from a file, URL, etc. however you want. Assume storage in $strYourXML;
 721
 722  $objXML = new xml2Array();
 723  $arrOutput = $objXML->parse($strYourXML);
 724  print_r($arrOutput); //print it out, or do whatever!
 725
 726 */
 727 class xml2Array {
 728
 729    var $arrOutput = array();
 730    var $resParser;
 731    var $strXmlData;
 732
 733    /**
 734    * Convert a utf-8 string to html entities
 735    *
 736    * @param string $str The UTF-8 string
 737    * @return string
 738    */
 739    function utf8_to_entities($str) {
 740        global $CFG;
 741
 742        $entities = '';
 743        $values = array();
 744        $lookingfor = 1;
 745
 746        return $str;
 747    }
 748
 749    /**
 750    * Parse an XML text string and create an array tree that rapresent the XML structure
 751    *
 752    * @param string $strInputXML The XML string
 753    * @return array
 754    */
 755    function parse($strInputXML) {
 756            $this->resParser = xml_parser_create ('UTF-8');
 757            xml_set_object($this->resParser,$this);
 758            xml_set_element_handler($this->resParser, "tagOpen", "tagClosed");
 759
 760            xml_set_character_data_handler($this->resParser, "tagData");
 761
 762            $this->strXmlData = xml_parse($this->resParser,$strInputXML );
 763            if(!$this->strXmlData) {
 764                die(sprintf("XML error: %s at line %d",
 765                            xml_error_string(xml_get_error_code($this->resParser)),
 766                            xml_get_current_line_number($this->resParser)));
 767            }
 768
 769            xml_parser_free($this->resParser);
 770
 771            return $this->arrOutput;
 772    }
 773
 774    function tagOpen($parser, $name, $attrs) {
 775        $tag=array("name"=>$name,"attrs"=>$attrs);
 776        array_push($this->arrOutput,$tag);
 777    }
 778
 779    function tagData($parser, $tagData) {
 780        if(trim($tagData)) {
 781            if(isset($this->arrOutput[count($this->arrOutput)-1]['tagData'])) {
 782                $this->arrOutput[count($this->arrOutput)-1]['tagData'] .= $this->utf8_to_entities($tagData);
 783            } else {
 784                $this->arrOutput[count($this->arrOutput)-1]['tagData'] = $this->utf8_to_entities($tagData);
 785            }
 786        }
 787    }
 788
 789    function tagClosed($parser, $name) {
 790        $this->arrOutput[count($this->arrOutput)-2]['children'][] = $this->arrOutput[count($this->arrOutput)-1];
 791        array_pop($this->arrOutput);
 792    }
 793
 794 }
 795
 796 ?>