docs/mods/_core/imscp/ims_import.php

   1 <?php
   2 /************************************************************************/
   3 /* ATutor                                                               */
   4 /************************************************************************/
   5 /* Copyright (c) 2002 - 2009                                            */
   6 /* Inclusive Design Institute                                           */
   7 /*                                                                      */
   8 /* This program is free software. You can redistribute it and/or        */
   9 /* modify it under the terms of the GNU General Public License          */
  10 /* as published by the Free Software Foundation.                        */
  11 /************************************************************************/
  12 // $Id$
  13 define('AT_INCLUDE_PATH', '../../../include/');
  14 require(AT_INCLUDE_PATH.'vitals.inc.php');
  15
  16 require_once(AT_INCLUDE_PATH.'../mods/_core/file_manager/filemanager.inc.php'); /* for clr_dir() and preImportCallBack and dirsize() */
  17 require(AT_INCLUDE_PATH.'classes/pclzip.lib.php');
  18 require(AT_INCLUDE_PATH.'../mods/_core/imsqti/lib/qti.inc.php');
  19 require(AT_INCLUDE_PATH.'../mods/_core/imsqti/classes/QTIImport.class.php');
  20 require(AT_INCLUDE_PATH.'../mods/_core/imsafa/classes/A4aImport.class.php');
  21 require(AT_INCLUDE_PATH.'../mods/_core/imscp/ns.inc.php');      //namespace, no longer needs, delete it after it's stable.
  22 require(AT_INCLUDE_PATH.'../mods/_core/imscc/classes/WeblinksParser.class.php');
  23 require(AT_INCLUDE_PATH.'../mods/_core/imscc/classes/DiscussionToolsParser.class.php');
  24 require(AT_INCLUDE_PATH.'../mods/_core/imscc/classes/DiscussionToolsImport.class.php');
  25
  26
  27 /* make sure we own this course that we're exporting */
  28 authenticate(AT_PRIV_CONTENT);
  29
  30 /* to avoid timing out on large files */
  31 @set_time_limit(0);
  32 $_SESSION['done'] = 1;
  33
  34 $html_head_tags = array("style", "script", "link");
  35
  36 $package_base_path = '';
  37 $package_real_base_path = '';   //the path to save the contents
  38 $all_package_base_path = array();
  39 $xml_base_path = '';
  40 $element_path = array();
  41 $imported_glossary = array();
  42 $character_data = '';
  43 $test_message = '';
  44 $test_title = '';
  45 $content_type = '';
  46 $skip_ims_validation = false;
  47 $added_dt = array();    //the mapping of discussion tools that are added
  48 $avail_dt = array();    //list of discussion tools that have not been handled
  49
  50 /*
  51  * return the error messages represented by the given array
  52  * @author      Mike A.
  53  * @ref         http://ca3.php.net/manual/en/domdocument.schemavalidate.php
  54  */
  55 function libxml_display_error($error)
  56 {
  57     $return = "<br/>\n";
  58     switch ($error->level) {
  59         case LIBXML_ERR_WARNING:
  60             $return .= "<b>Warning $error->code</b>: ";
  61             break;
  62         case LIBXML_ERR_ERROR:
  63             $return .= "<b>Error $error->code</b>: ";
  64             break;
  65         case LIBXML_ERR_FATAL:
  66             $return .= "<b>Fatal Error $error->code</b>: ";
  67             break;
  68     }
  69     $return .= trim($error->message);
  70     if ($error->file) {
  71         $return .=    " in <b>$error->file</b>";
  72     }
  73     $return .= " on line <b>$error->line</b>\n";
  74
  75     return $return;
  76 }
  77
  78 /**
  79  * Validate all the XML in the package, including checking XSDs, missing data.
  80  * @param       string          the path of the directory that contains all the package files
  81  * @return      boolean         true if every file exists in the manifest, false if any is missing.
  82  */
  83 function checkResources($import_path){
  84         global $items, $msg, $skip_ims_validation, $avail_dt;
  85
  86         if (!is_dir($import_path)){
  87                 return;
  88         }
  89
  90         //if the package has access for all content, skip validation for now.
  91         //todo: import the XSD into our validator
  92         if ($skip_ims_validation){
  93                 return true;
  94         }
  95
  96         //generate a file tree
  97         $data = rscandir($import_path);
  98
  99         //check if every file is presented in the manifest
 100         foreach($data as $filepath){
 101                 $filepath = substr($filepath, strlen($import_path));
 102
 103                 //validate xml via its xsd/dtds
 104                 if (preg_match('/(.*)\.xml/', $filepath)){
 105                         libxml_use_internal_errors(true);
 106                         $dom = new DOMDocument();
 107                         $dom->load(realpath($import_path.$filepath));
 108                         if (!@$dom->schemaValidate('main.xsd')){
 109                                 $errors = libxml_get_errors();
 110                                 foreach ($errors as $error) {
 111                                         //suppress warnings
 112                                         if ($error->level==LIBXML_ERR_WARNING){
 113                                                 continue;
 114                                         }
 115                                         $msg->addError(array('IMPORT_CARTRIDGE_FAILED', libxml_display_error($error)));
 116                                 }
 117                                 libxml_clear_errors();
 118                         }
 119                         //if this is the manifest file, we do not have to check for its existance.
 120 //                      if (preg_match('/(.*)imsmanifest\.xml/', $filepath)){
 121 //                              continue;
 122 //                      }
 123                 }
 124         }
 125
 126         //Create an array that mimics the structure of the data array, based on the xml items
 127         $filearray = array();
 128         foreach($items as $name=>$fileinfo){
 129                 if(isset($fileinfo['file']) && is_array($fileinfo['file']) && !empty($fileinfo['file'])){
 130                         foreach($fileinfo['file'] as $fn){
 131                                 if (!in_array(realpath($import_path.$fn), $filearray)){
 132                                         //if url, skip
 133                                         if (preg_match('/^http[s]?\:/', $fn) == 0){
 134                                                 $filearray[] = realpath($import_path. $fn);
 135                                         }
 136                                 }
 137                         }
 138                 }
 139
 140                 //validate the xml by its schema
 141                 if (preg_match('/imsqti\_(.*)/', $fileinfo['type'])){
 142                         $qti = new QTIParser($fileinfo['type']);
 143                         $xml_content = @file_get_contents($import_path . $fileinfo['href']);
 144                         $qti->parse($xml_content); //will add error to $msg if failed
 145                 }
 146
 147                 //add all dependent discussion tools to a list
 148                 if(isset($fileinfo['dependency']) && !empty($fileinfo['dependency'])){
 149                         $avail_dt = array_merge($avail_dt, $fileinfo['dependency']);
 150                 }
 151         }
 152
 153         //check if all files in the xml is presented in the archieve
 154         $result = array_diff($filearray, $data);
 155         //using sizeof because array_diff only
 156         //returns an array containing all the entries from array1  that are not present in any of the
 157         //other arrays.
 158         //Using sizeof make sure it's not a subset of array2.
 159         //-1 on data because it always contain the imsmanifest.xml file
 160         if (!$skip_ims_validation){
 161             if (!empty($result) || sizeof($data)-1>sizeof($filearray)){
 162                     $msg->addError(array('IMPORT_CARTRIDGE_FAILED', _AT('ims_missing_references')));
 163             }
 164         }
 165         return true;
 166 }
 167
 168 /*
 169  * @example rscandir(dirname(__FILE__).'/'));
 170  * @param string $base
 171  * @param array $omit
 172  * @param array $data
 173  * @return array
 174  */
 175 function rscandir($base='', &$data=array()) {
 176   $array = array_diff(scandir($base), array('.', '..')); # remove ' and .. from the array */
 177   foreach($array as $value) : /* loop through the array at the level of the supplied $base */
 178
 179     if (is_dir($base.$value)) : /* if this is a directory */
 180 //        don't save the directory name
 181 //        $data[] = $base.$value.'/'; /* add it to the $data array */
 182       $data = rscandir($base.$value.'/', $data); /* then make a recursive call with the
 183       current $value as the $base supplying the $data array to carry into the recursion */
 184
 185     elseif (is_file($base.$value)) : /* else if the current $value is a file */
 186       $data[] = realpath($base.$value); /* just add the current $value to the $data array */
 187
 188     endif;
 189
 190   endforeach;
 191   return $data; // return the $data array
 192
 193 }
 194
 195 /**
 196  * Function to restructure the $items.  So that old import will merge the top page into its children, and
 197  * create a new folder on top of it
 198  */
 199 function rehash($items){
 200         global $order;
 201         $parent_page_maps = array();    //old=>new
 202         $temp_popped_items = array();
 203         $rehashed_items = array();      //the reconstructed array
 204         foreach($items as $id => $content){
 205                 $parent_obj = $items[$content['parent_content_id']];
 206                 $rehashed_items[$id] = $content;        //copy
 207         //first check if this is the top folder of the archieve, we don't want the top folder, remove it.
 208 /*        if (isset($content['parent_content_id']) && !isset($parent_obj) && !isset($content['type'])){
 209             //if we can get into here, it means the parent_content_id of this is empty
 210             //implying this is the first folder.
 211             //note: it checks content[type] cause it could be a webcontent. In that case,
 212             //      we do want to keep it.
 213                         debug($content, 'hit');
 214             unset($rehashed_items[$id]);
 215             continue;
 216         }
 217                 //then check if there exists a mapping for this item, if so, simply replace is and next.
 218                 else
 219 */              if (isset($parent_page_maps[$content['parent_content_id']])){
 220                         $rehashed_items [$id]['parent_content_id'] = $parent_page_maps[$content['parent_content_id']];
 221                         $rehashed_items [$id]['ordering']++;
 222                 }
 223                 //If its parent page is a top page and have an identiferref
 224                 elseif (isset($parent_obj) && isset($parent_obj['href'])){
 225                         if (!isset($parent_obj['href'])){
 226                                 //check if this top page is already a folder, if so, next.
 227                                 continue;
 228                         }
 229                         //else, make its parent page to a folder
 230                         $new_item['title'] = $parent_obj['title'];
 231                         //check if this parent has been modified, if so, chnage it
 232                         if (isset($parent_page_maps[$parent_obj['parent_content_id']])){
 233                             $new_item['parent_content_id'] = $parent_page_maps[$parent_obj['parent_content_id']];
 234                         } else {
 235                         $new_item['parent_content_id'] = $parent_obj['parent_content_id'];
 236             }
 237                         //all ordering needs to be +1 because we are creating a new folder on top of
 238                         //everything, except the first page.
 239                         $new_item['ordering'] = $parent_obj['ordering'];
 240                         if ($new_item['parent_content_id']!='0'){
 241                                 $new_item['ordering']++;
 242                         }
 243
 244                 //assign this new parent folder to the pending items array
 245                         $new_item_name = $content['parent_content_id'].'_FOLDER';
 246                         //a not so brilliant way to append the folder in its appropriate position
 247                         $reordered_hashed_items = array();  //use to store the new rehashed item with the correct item order
 248                         foreach($rehashed_items as $rh_id=>$rh_content){
 249                             if ($rh_id == $content['parent_content_id']){
 250                                 //add the folder in before the parent subpage.
 251                                 $reordered_hashed_items[$new_item_name] = $new_item;
 252                             }
 253                             $reordered_hashed_items[$rh_id] = $rh_content;  //clone
 254                         }
 255                         $rehashed_items = $reordered_hashed_items;  //replace it back
 256                         unset($reordered_hashed_items);
 257                         $parent_page_maps[$content['parent_content_id']] = $new_item_name;  //save this page on the hash map
 258
 259                         //reconstruct the parent
 260                         $rehashed_items[$content['parent_content_id']]['parent_content_id'] = $parent_page_maps[$content['parent_content_id']];
 261                         $rehashed_items[$content['parent_content_id']]['ordering'] = 0; //always the first one.
 262
 263                         //reconstruct itself
 264                         $rehashed_items[$id]['parent_content_id'] = $parent_page_maps[$content['parent_content_id']];
 265                         $rehashed_items[$id]['ordering']++;
 266
 267                 }
 268         }
 269         return $rehashed_items;
 270 }
 271
 272
 273 /**
 274  * This function will take the test accessment XML and add these to the database.
 275  * @param       string  The path of the XML, without the import_path.
 276  * @param       mixed   An item singleton.  Contains the info of this item, namely, the accessment details.
 277  *                                      The item must be an object created by the ims class.
 278  * @param       string  the import path
 279  * @return      mixed   An Array that contains all the question IDs that have been imported.
 280  */
 281  function addQuestions($xml, $item, $import_path){
 282         global $test_title;
 283         $qti_import = new QTIImport($import_path);
 284         $tests_xml = $import_path.$xml;
 285
 286         //Mimic the array for now.
 287         $test_attributes['resource']['href'] = $item['href'];
 288         $test_attributes['resource']['type'] = preg_match('/imsqti_xmlv1p2/', $item['type'])==1?'imsqti_xmlv1p2':'imsqti_xmlv1p1';
 289         $test_attributes['resource']['file'] = $item['file'];
 290
 291         //Get the XML file out and start importing them into our database.
 292         //TODO: See question_import.php 287-289.
 293         $qids = $qti_import->importQuestions($test_attributes);
 294         $test_title = $qti_import->title;
 295
 296         return $qids;
 297  }
 298
 299
 300         /* called at the start of en element */
 301         /* builds the $path array which is the path from the root to the current element */
 302         function startElement($parser, $name, $attrs) {
 303                 global $items, $path, $package_base_path, $all_package_base_path, $package_real_base_path;
 304                 global $element_path, $import_path, $skip_ims_validation;
 305                 global $xml_base_path, $test_message, $content_type;
 306                 global $current_identifier, $msg, $ns, $ns_cp;
 307
 308                 //check if the xml is valid
 309 /*
 310                 if(isset($attrs['xsi:schemaLocation']) && $name == 'manifest'){
 311                         //run the loop and check it thru the ns.inc.php
 312                 } elseif ($name == 'manifest' && !isset($attrs['xsi:schemaLocation'])) {
 313                         //$msg->addError('MANIFEST_NOT_WELLFORM: NO NAMESPACE');
 314                         $msg->addError('IMPORT_CARTRIDGE_FAILED');
 315                 } else {
 316                         //error
 317                 }
 318                 //error if the tag names are wrong
 319                 if (preg_match('/^xsi\:/', $name) >= 1){
 320                         //$msg->addError('MANIFEST_NOT_WELLFORM');
 321                         $msg->addError('IMPORT_CARTRIDGE_FAILED');
 322                 }
 323 */
 324
 325                 //validate namespaces
 326                 if(!$skip_ims_validation && isset($attrs['xsi:schemaLocation']) && $name=='manifest'){
 327                         $schema_location = array();
 328                         $split_location = preg_split('/[\r\n\s]+/', trim($attrs['xsi:schemaLocation']));
 329
 330                         //check if the namespace is actually right, have an array or some sort in IMS class
 331                         if(sizeof($split_location)%2==1){
 332                                 //schema is not in the form of "The first URI reference in each pair is a namespace name,
 333                                 //and the second is the location of a schema that describes that namespace."
 334                                 //$msg->addError('MANIFEST_NOT_WELLFORM');
 335                                 $msg->addError(array('IMPORT_CARTRIDGE_FAILED', _AT('schema_error')));
 336                         }
 337
 338                         //turn the xsi:schemaLocation URI into a schema that describe namespace.
 339                         //name = url
 340                         //http://msdn.microsoft.com/en-us/library/ms256100(VS.85).aspx
 341                         //http://www.w3.org/TR/xmlschema-1/
 342                         for($i=0; $i < sizeof($split_location);$i=$i+2){
 343                                 /*
 344                                 if (isset($ns[$split_location[$i]]) && $ns[$split_location[$i]] != $split_location[$i+1]){
 345                                         //$msg->addError('MANIFEST_NOT_WELLFORM: SCHEMA');
 346                                         $msg->addError('IMPORT_CARTRIDGE_FAILED');
 347                                 }
 348                                 */
 349                                 //if the key of the namespace is not defined. Throw error.
 350                                 if(!isset($ns[$split_location[$i]]) && !isset($ns_cp[$split_location[$i]])){
 351                                         $msg->addError(array('IMPORT_CARTRIDGE_FAILED', _AT('schema_error')));
 352                                 }
 353                         }
 354                 } else {
 355                         //throw error
 356                 }
 357
 358                 if ($name == 'manifest' && isset($attrs['xml:base']) && $attrs['xml:base']) {
 359                         $xml_base_path = $attrs['xml:base'];
 360                 } else if ($name == 'file') {
 361                         // check if it misses file references
 362                         if(!$skip_ims_validation && (!isset($attrs['href']) || $attrs['href']=='')){
 363                                 //$msg->addError('MANIFEST_NOT_WELLFORM');
 364                                 $msg->addError(array('IMPORT_CARTRIDGE_FAILED', _AT('ims_missing_references')));
 365                         }
 366
 367                         // special case for webCT content packages that don't specify the `href` attribute
 368                         // with the `<resource>` element.
 369                         // we take the `href` from the first `<file>` element.
 370                         if (isset($items[$current_identifier]) && ($items[$current_identifier]['href'] == '')) {
 371                                 $attrs['href'] = urldecode($attrs['href']);
 372                                 $items[$current_identifier]['href'] = $attrs['href'];
 373                         }
 374
 375                         $temp_path = pathinfo($attrs['href']);
 376                         $temp_path = explode('/', $temp_path['dirname']);
 377                         if (empty($package_base_path)){
 378                             $package_base_path = $temp_path;
 379             }
 380                         if ($all_package_base_path!='' && empty($all_package_base_path)){
 381                                 $all_package_base_path = $temp_path;
 382                         }
 383                         $package_base_path = array_intersect_assoc($package_base_path, $temp_path);
 384
 385                         //calculate the depths of relative paths
 386                         if ($all_package_base_path!=''){
 387                                 $no_relative_temp_path = $temp_path;
 388                                 foreach($no_relative_temp_path as $path_node){
 389                                         if ($path_node=='..'){
 390                                                 array_pop($no_relative_temp_path);
 391                                                 array_pop($no_relative_temp_path); //not a typo, have to pop twice, both itself('..'), and the one before.
 392                                         }
 393                                 }
 394                                 $all_package_base_path = array_intersect_assoc($all_package_base_path, $no_relative_temp_path);
 395                                 if (empty($all_package_base_path)){
 396                                         $all_package_base_path = '';    //unset it, there is no intersection.
 397                                 }
 398                         }
 399
 400                         //save the actual content base path
 401                         if (in_array('..', $temp_path)){
 402                                 $sizeofrp = array_count_values($temp_path);
 403                         }
 404
 405                         //for IMSCC, assume that all resources lies in the same folder, except styles.css
 406                         if ($items[$current_identifier]['type']=='webcontent' || $items[$current_identifier]['type']=='imsdt_xmlv1p0'){
 407                                 //find the intersection of each item's related files, then that intersection is the content_path
 408                                 if (isset($items[$current_identifier]['file'])){
 409                                         foreach ($items[$current_identifier]['file'] as $resource_path){
 410                                                 $temp_path = pathinfo($resource_path);
 411                                                 $temp_path = explode('/', $temp_path['dirname']);
 412                                                 $package_base_path = array_intersect_assoc($package_base_path, $temp_path);
 413                                         }
 414                                 }
 415                         }
 416
 417                         //real content path
 418                         if($sizeofrp['..'] > 0 && !empty($all_package_base_path)){
 419                                 for ($i=0; $i<$sizeofrp['..']; $i++){
 420                                         array_pop($all_package_base_path);
 421                                 }
 422                         }
 423
 424                         if (count($package_base_path) > 0) {
 425                                 $items[$current_identifier]['new_path'] = implode('/', $package_base_path);
 426                         }
 427
 428 /*
 429  * @harris, reworked the package_base_path
 430                                 if ($package_base_path=="") {
 431                                         $package_base_path = $temp_path;
 432                                 }
 433                                 elseif (is_array($package_base_path) && $content_type != 'IMS Common Cartridge') {
 434                                         //if this is a content package, we want only intersection
 435                                         $package_base_path = array_intersect($package_base_path, $temp_path);
 436                                         $temp_path = $package_base_path;
 437                                 }
 438                                 //added these 2 lines in so that pictures would load.  making the elseif above redundant.
 439                                 //if there is a bug for pictures not load, then it's the next 2 lines.
 440                                 $package_base_path = array_intersect($package_base_path, $temp_path);
 441                                 $temp_path = $package_base_path;
 442                         }
 443                         $items[$current_identifier]['new_path'] = implode('/', $temp_path);
 444 */
 445                         if (    isset($_POST['allow_test_import']) && isset($items[$current_identifier])
 446                                                 && preg_match('/((.*)\/)*tests\_[0-9]+\.xml$/', $attrs['href'])) {
 447                                 $items[$current_identifier]['tests'][] = $attrs['href'];
 448                         }
 449                         if (    isset($_POST['allow_a4a_import']) && isset($items[$current_identifier])) {
 450                                 $items[$current_identifier]['a4a_import_enabled'] = true;
 451                         }
 452                 } else if (($name == 'item') && ($attrs['identifierref'] != '')) {
 453                         $path[] = $attrs['identifierref'];
 454                 } else if (($name == 'item') && ($attrs['identifier'])) {
 455                         $path[] = $attrs['identifier'];
 456 //              } else if (($name == 'resource') && is_array($items[$attrs['identifier']]))  {
 457                 } else if (($name == 'resource')) {
 458                         $current_identifier = $attrs['identifier'];
 459                         $items[$current_identifier]['type'] = $attrs['type'];
 460                         if ($attrs['href']) {
 461                                 $attrs['href'] = urldecode($attrs['href']);
 462
 463                                 $items[$attrs['identifier']]['href'] = $attrs['href'];
 464
 465                                 // href points to a remote url
 466                                 if (preg_match('/^http.*:\/\//', trim($attrs['href']))) {
 467                                         $items[$attrs['identifier']]['new_path'] = '';
 468                                 } else // href points to local file
 469                                 {
 470                                         $temp_path = pathinfo($attrs['href']);
 471                                         $temp_path = explode('/', $temp_path['dirname']);
 472 //                                      if (empty($package_base_path)) {
 473                                                 $package_base_path = $temp_path;
 474 //                                      }
 475 //                                      else {
 476 //                                              $package_base_path = array_intersect($package_base_path, $temp_path);
 477 //                                      }
 478                                         $items[$attrs['identifier']]['new_path'] = implode('/', $temp_path);
 479                                 }
 480                         }
 481
 482                         //if test custom message has not been saved
 483 //                      if (!isset($items[$current_identifier]['test_message'])){
 484 //                              $items[$current_identifier]['test_message'] = $test_message;
 485 //                      }
 486                 } else if ($name=='dependency' && $attrs['identifierref']!='') {
 487                         //if there is a dependency, attach it to the item array['file']
 488                         $items[$current_identifier]['dependency'][] = $attrs['identifierref'];
 489                 }
 490                 if (($name == 'item') && ($attrs['parameters'] != '')) {
 491                         $items[$attrs['identifierref']]['test_message'] = $attrs['parameters'];
 492                 }
 493                 if ($name=='file'){
 494                         if(!isset($items[$current_identifier]) && $attrs['href']!=''){
 495                                 $items[$current_identifier]['href']      = $attrs['href'];
 496                         }
 497                         if (substr($attrs['href'], 0, 7) == 'http://' || substr($attrs['href'], 0, 8) == 'https://' || file_exists($import_path.$attrs['href']) || $skip_ims_validation){
 498                                 $items[$current_identifier]['file'][] = $attrs['href'];
 499                         } else {
 500                                 $msg->addError(array('IMPORT_CARTRIDGE_FAILED', _AT(array('ims_files_missing', $attrs['href']))));
 501                         }
 502                 }
 503                 if ($name=='cc:authorizations'){
 504                         //don't have authorization setup.
 505                         //$msg->addError('');
 506                         $msg->addError('IMS_AUTHORIZATION_NOT_SUPPORT');
 507                 }
 508                 array_push($element_path, $name);
 509         }
 510
 511         /* called when an element ends */
 512         /* removed the current element from the $path */
 513         function endElement($parser, $name) {
 514                 global $path, $element_path, $my_data, $items;
 515                 global $current_identifier, $skip_ims_validation;
 516                 global $msg, $content_type;
 517                 static $resource_num = 0;
 518
 519                 if ($name == 'item') {
 520                         array_pop($path);
 521                 }
 522
 523                 //check if this is a test import
 524                 if ($name == 'schema'){
 525                         if (trim($my_data)=='IMS Question and Test Interoperability'){
 526                                 $msg->addError('IMPORT_FAILED');
 527                         }
 528                         $content_type = trim($my_data);
 529                 }
 530
 531                 //Handles A4a
 532                 if ($current_identifier != ''){
 533                         $my_data = trim($my_data);
 534                         $last_file_name = $items[$current_identifier]['file'][(sizeof($items[$current_identifier]['file']))-1];
 535
 536                         if ($name=='originalAccessMode'){
 537                                 if (in_array('accessModeStatement', $element_path)){
 538                                         $items[$current_identifier]['a4a'][$last_file_name][$resource_num]['access_stmt_originalAccessMode'] = $my_data;
 539                                 } elseif (in_array('adaptationStatement', $element_path)){
 540                                         $items[$current_identifier]['a4a'][$last_file_name][$resource_num]['adapt_stmt_originalAccessMode'] = $my_data;
 541                                 }
 542                         } elseif (($name=='language') && in_array('accessModeStatement', $element_path)){
 543                                 $items[$current_identifier]['a4a'][$last_file_name][$resource_num]['language'][] = $my_data;
 544                         } elseif ($name=='hasAdaptation') {
 545                                 $items[$current_identifier]['a4a'][$last_file_name][$resource_num]['hasAdaptation'][] = $my_data;
 546                         } elseif ($name=='isAdaptationOf'){
 547                                 $items[$current_identifier]['a4a'][$last_file_name][$resource_num]['isAdaptationOf'][] = $my_data;
 548                         } elseif ($name=='accessForAllResource'){
 549                                 /* the head node of accessForAll Metadata, if this exists in the manifest. Skip XSD validation,
 550                                  * because A4a doesn't have a xsd yet.  Our access for all is based on ISO which will not pass
 551                                  * the current IMS validation.
 552                                  * Also, since ATutor is the only one (as of Oct 21, 2009) that exports IMS with access for all
 553                                  * content, we can almost assume that any ims access for all content is by us, and is valid.
 554                                  */
 555                                 $skip_ims_validation = true;
 556                                 $resource_num++;
 557                         } elseif($name=='file'){
 558                                 $resource_num = 0;      //reset resournce number to 0 when the file tags ends
 559                         }
 560                 }
 561
 562                 if ($element_path === array('manifest', 'metadata', 'imsmd:lom', 'imsmd:general', 'imsmd:title', 'imsmd:langstring')) {
 563                         global $package_base_name;
 564                         $package_base_name = trim($my_data);
 565                 }
 566
 567                 array_pop($element_path);
 568                 $my_data = '';
 569         }
 570
 571         /* called when there is character data within elements */
 572         /* constructs the $items array using the last entry in $path as the parent element */
 573         function characterData($parser, $data){
 574                 global $path, $items, $order, $my_data, $element_path;
 575                 global $current_identifier;
 576
 577                 $str_trimmed_data = trim($data);
 578
 579                 if (!empty($str_trimmed_data)) {
 580                         $size = count($path);
 581                         if ($size > 0) {
 582                                 $current_item_id = $path[$size-1];
 583                                 if ($size > 1) {
 584                                         $parent_item_id = $path[$size-2];
 585                                 } else {
 586                                         $parent_item_id = 0;
 587                                 }
 588
 589                                 if (isset($items[$current_item_id]['parent_content_id']) && is_array($items[$current_item_id])) {
 590
 591                                         /* this item already exists, append the title           */
 592                                         /* this fixes {\n, \t, `, &} characters in elements */
 593
 594                                         /* horible kludge to fix the <ns2:objectiveDesc xmlns:ns2="http://www.utoronto.ca/atrc/tile/xsd/tile_objective"> */
 595                                         /* from TILE */
 596                                         if (in_array('accessForAllResource', $element_path)){
 597                                                 //skip this tag
 598                                         } elseif ($element_path[count($element_path)-1] != 'ns1:objectiveDesc') {
 599                                                 $items[$current_item_id]['title'] .= $data;
 600                                         }
 601
 602                                 } else {
 603                                         $order[$parent_item_id] ++;
 604                                         $item_tmpl = array(     'title'                         => $data,
 605                                                                                 'parent_content_id' => $parent_item_id,
 606                                                                                 'ordering'                      => $order[$parent_item_id]-1);
 607                                         //append other array values if it exists
 608                                         if (is_array($items[$current_item_id])){
 609                                                 $items[$current_item_id] = array_merge($items[$current_item_id], $item_tmpl);
 610                                         } else {
 611                                                 $items[$current_item_id] = $item_tmpl;
 612                                         }
 613                                 }
 614                         }
 615                 }
 616
 617                 $my_data .= $data;
 618         }
 619
 620         /* glossary parser: */
 621         function glossaryStartElement($parser, $name, $attrs) {
 622                 global $element_path;
 623
 624                 array_push($element_path, $name);
 625         }
 626
 627         /* called when an element ends */
 628         /* removed the current element from the $path */
 629         function glossaryEndElement($parser, $name) {
 630                 global $element_path, $my_data, $imported_glossary;
 631                 static $current_term;
 632
 633                 if ($element_path === array('glossary', 'item', 'term') ||
 634                         $element_path === array('glossary:glossary', 'item', 'term')) {
 635                         $current_term = $my_data;
 636
 637                 } else if ($element_path === array('glossary', 'item', 'definition') ||
 638                                    $element_path === array('glossary:glossary', 'item', 'definition')) {
 639                         $imported_glossary[trim($current_term)] = trim($my_data);
 640                 }
 641
 642                 array_pop($element_path);
 643                 $my_data = '';
 644         }
 645
 646         function glossaryCharacterData($parser, $data){
 647                 global $my_data;
 648
 649                 $my_data .= $data;
 650         }
 651
 652 if (!isset($_POST['submit']) && !isset($_POST['cancel'])) {
 653         /* just a catch all */
 654
 655         $errors = array('FILE_MAX_SIZE', ini_get('post_max_size'));
 656         $msg->addError($errors);
 657
 658         header('Location: ./index.php');
 659         exit;
 660 } else if (isset($_POST['cancel'])) {
 661         $msg->addFeedback('IMPORT_CANCELLED');
 662
 663         header('Location: ../content/index.php');
 664         exit;
 665 }
 666
 667 $cid = intval($_POST['cid']);
 668
 669 //If user chooses to ignore validation.
 670 if(isset($_POST['ignore_validation']) && $_POST['ignore_validation']==1) {
 671         $skip_ims_validation = true;
 672 }
 673
 674 if (isset($_POST['url']) && ($_POST['url'] != 'http://') ) {
 675         if ($content = @file_get_contents($_POST['url'])) {
 676                 // save file to /content/
 677                 $filename = substr(time(), -6). '.zip';
 678                 $full_filename = AT_CONTENT_DIR . $filename;
 679
 680                 if (!$fp = fopen($full_filename, 'w+b')) {
 681                         echo "Cannot open file ($filename)";
 682                         exit;
 683                 }
 684
 685                 if (fwrite($fp, $content, strlen($content) ) === FALSE) {
 686                         echo "Cannot write to file ($filename)";
 687                         exit;
 688                 }
 689                 fclose($fp);
 690         }
 691         $_FILES['file']['name']     = $filename;
 692         $_FILES['file']['tmp_name'] = $full_filename;
 693         $_FILES['file']['size']     = strlen($content);
 694         unset($content);
 695         $url_parts = pathinfo($_POST['url']);
 696         $package_base_name_url = $url_parts['basename'];
 697 }
 698 $ext = pathinfo($_FILES['file']['name']);
 699 $ext = $ext['extension'];
 700
 701 if ($ext != 'zip') {
 702         $msg->addError('IMPORTDIR_IMS_NOTVALID');
 703 } else if ($_FILES['file']['error'] == 1) {
 704         $errors = array('FILE_MAX_SIZE', ini_get('upload_max_filesize'));
 705         $msg->addError($errors);
 706 } else if ( !$_FILES['file']['name'] || (!is_uploaded_file($_FILES['file']['tmp_name']) && !$_POST['url'])) {
 707         $msg->addError('FILE_NOT_SELECTED');
 708 } else if ($_FILES['file']['size'] == 0) {
 709         $msg->addError('IMPORTFILE_EMPTY');
 710 }
 711
 712 if ($msg->containsErrors()) {
 713         if (isset($_GET['tile'])) {
 714                 header('Location: '.$_base_path.'mods/_standard/tile_search/index.php');
 715         } else {
 716                 header('Location: index.php');
 717         }
 718         exit;
 719 }
 720
 721 /* check if ../content/import/ exists */
 722 $import_path = AT_CONTENT_DIR . 'import/';
 723 $content_path = AT_CONTENT_DIR;
 724
 725 if (!is_dir($import_path)) {
 726         if (!@mkdir($import_path, 0700)) {
 727                 $msg->addError('IMPORTDIR_FAILED');
 728         }
 729 }
 730
 731 $import_path .= $_SESSION['course_id'].'/';
 732 if (is_dir($import_path)) {
 733         clr_dir($import_path);
 734 }
 735
 736 if (!@mkdir($import_path, 0700)) {
 737         $msg->addError('IMPORTDIR_FAILED');
 738 }
 739
 740 if ($msg->containsErrors()) {
 741         if (isset($_GET['tile'])) {
 742                 header('Location: '.$_base_path.'mods/_standard/tile_search/index.php');
 743         } else {
 744                 header('Location: index.php');
 745         }
 746         exit;
 747 }
 748
 749 /* extract the entire archive into AT_COURSE_CONTENT . import/$course using the call back function to filter out php files */
 750 error_reporting(0);
 751 $archive = new PclZip($_FILES['file']['tmp_name']);
 752 if ($archive->extract(  PCLZIP_OPT_PATH,        $import_path,
 753                                                 PCLZIP_CB_PRE_EXTRACT,  'preImportCallBack') == 0) {
 754         $msg->addError('IMPORT_FAILED');
 755         echo 'Error : '.$archive->errorInfo(true);
 756         clr_dir($import_path);
 757         header('Location: index.php');
 758         exit;
 759 }
 760 error_reporting(AT_ERROR_REPORTING);
 761
 762 /* get the course's max_quota */
 763 $sql    = "SELECT max_quota FROM ".TABLE_PREFIX."courses WHERE course_id=$_SESSION[course_id]";
 764 $result = mysql_query($sql, $db);
 765 $q_row  = mysql_fetch_assoc($result);
 766
 767 if ($q_row['max_quota'] != AT_COURSESIZE_UNLIMITED) {
 768
 769         if ($q_row['max_quota'] == AT_COURSESIZE_DEFAULT) {
 770                 $q_row['max_quota'] = $MaxCourseSize;
 771         }
 772         $totalBytes   = dirsize($import_path);
 773         $course_total = dirsize(AT_CONTENT_DIR . $_SESSION['course_id'].'/');
 774         $total_after  = $q_row['max_quota'] - $course_total - $totalBytes + $MaxCourseFloat;
 775
 776         if ($total_after < 0) {
 777                 /* remove the content dir, since there's no space for it */
 778                 $errors = array('NO_CONTENT_SPACE', number_format(-1*($total_after/AT_KBYTE_SIZE), 2 ) );
 779                 $msg->addError($errors);
 780
 781                 clr_dir($import_path);
 782
 783                 if (isset($_GET['tile'])) {
 784                         header('Location: '.$_base_path.'mods/_standard/tile_search/index.php');
 785                 } else {
 786                         header('Location: index.php');
 787                 }
 788                 exit;
 789         }
 790 }
 791
 792
 793 $items = array(); /* all the content pages */
 794 $order = array(); /* keeps track of the ordering for each content page */
 795 $path  = array();  /* the hierarchy path taken in the menu to get to the current item in the manifest */
 796 $dependency_files = array(); /* the file path for the dependency files */
 797
 798 /*
 799 $items[content_id/resource_id] = array(
 800                                                                         'title'
 801                                                                         'real_content_id' // calculated after being inserted
 802                                                                         'parent_content_id'
 803                                                                         'href'
 804                                                                         'ordering'
 805                                                                         );
 806 */
 807 $ims_manifest_xml = @file_get_contents($import_path.'imsmanifest.xml');
 808 //scan for manifest xml if it's not on the top level.
 809 if ($ims_manifest_xml === false){
 810         $data = rscandir($import_path);
 811         $manifest_array = array();
 812         foreach($data as $scanned_file){
 813                 $scanned_file = realpath($scanned_file);
 814                 //change the file string to an array
 815                 $this_file_array = explode(DIRECTORY_SEPARATOR, $scanned_file);
 816                 if(empty($manifest_array)){
 817                         $manifest_array = $this_file_array;
 818                 }
 819                 $manifest_array = array_intersect_assoc($this_file_array, $manifest_array);
 820
 821                 if (strpos($scanned_file, 'imsmanifest')!==false){
 822                         $ims_manifest_xml = @file_get_contents($scanned_file);
 823                 }
 824         }
 825         if ($ims_manifest_xml !== false){
 826                 $import_path = implode(DIRECTORY_SEPARATOR, $manifest_array) . DIRECTORY_SEPARATOR;
 827         }
 828 }
 829
 830 //if no imsmanifest.xml found in the entire package, throw error.
 831 if ($ims_manifest_xml === false) {
 832         $msg->addError('NO_IMSMANIFEST');
 833
 834         if (file_exists($import_path . 'atutor_backup_version')) {
 835                 $msg->addError('NO_IMS_BACKUP');
 836         }
 837         clr_dir($import_path);
 838
 839         if (isset($_GET['tile'])) {
 840                 header('Location: '.$_base_path.'mods/_standard/tile_search/index.php');
 841         } else {
 842                 header('Location: index.php');
 843         }
 844         exit;
 845 }
 846
 847 $xml_parser = xml_parser_create();
 848
 849 xml_parser_set_option($xml_parser, XML_OPTION_CASE_FOLDING, false); /* conform to W3C specs */
 850 xml_set_element_handler($xml_parser, 'startElement', 'endElement');
 851 xml_set_character_data_handler($xml_parser, 'characterData');
 852
 853 if (!xml_parse($xml_parser, $ims_manifest_xml, true)) {
 854         die(sprintf("XML error: %s at line %d",
 855                                 xml_error_string(xml_get_error_code($xml_parser)),
 856                                 xml_get_current_line_number($xml_parser)));
 857 }
 858 xml_parser_free($xml_parser);
 859 /* check if the glossary terms exist */
 860 $glossary_path = '';
 861 if ($content_type == 'IMS Common Cartridge'){
 862         $glossary_path = 'resources/GlossaryItem/';
 863 //      $package_base_path = '';
 864 }
 865 if (file_exists($import_path . $glossary_path . 'glossary.xml')){
 866         $glossary_xml = @file_get_contents($import_path.$glossary_path.'glossary.xml');
 867         $element_path = array();
 868         $xml_parser = xml_parser_create();
 869
 870         /* insert the glossary terms into the database (if they're not in there already) */
 871         /* parse the glossary.xml file and insert the terms */
 872         xml_parser_set_option($xml_parser, XML_OPTION_CASE_FOLDING, false); /* conform to W3C specs */
 873         xml_set_element_handler($xml_parser, 'glossaryStartElement', 'glossaryEndElement');
 874         xml_set_character_data_handler($xml_parser, 'glossaryCharacterData');
 875
 876         if (!xml_parse($xml_parser, $glossary_xml, true)) {
 877                 die(sprintf("XML error: %s at line %d",
 878                                         xml_error_string(xml_get_error_code($xml_parser)),
 879                                         xml_get_current_line_number($xml_parser)));
 880         }
 881         xml_parser_free($xml_parser);
 882         $contains_glossary_terms = true;
 883         foreach ($imported_glossary as $term => $defn) {
 884                 if (!$glossary[$term]) {
 885                         $sql = "INSERT INTO ".TABLE_PREFIX."glossary VALUES (NULL, $_SESSION[course_id], '$term', '$defn', 0)";
 886                         mysql_query($sql, $db);
 887                 }
 888         }
 889 }
 890
 891 // Check if all the files exists in the manifest, iff it's a IMS CC package.
 892 if ($content_type == 'IMS Common Cartridge') {
 893         checkResources($import_path);
 894 }
 895
 896 // Check if there are any errors during parsing.
 897 if ($msg->containsErrors()) {
 898         if (isset($_GET['tile'])) {
 899                 header('Location: '.$_base_path.'mods/_standard/tile_search/index.php');
 900         } else {
 901                 header('Location: index.php');
 902         }
 903         exit;
 904 }
 905
 906 /* generate a unique new package base path based on the package file name and date as needed. */
 907 /* the package name will be the dir where the content for this package will be put, as a result */
 908 /* the 'content_path' field in the content table will be set to this path. */
 909 /* $package_base_name_url comes from the URL file name (NOT the file name of the actual file we open)*/
 910 if (!$package_base_name && $package_base_name_url) {
 911         $package_base_name = substr($package_base_name_url, 0, -4);
 912 } else if (!$package_base_name) {
 913         $package_base_name = substr($_FILES['file']['name'], 0, -4);
 914 }
 915
 916 $package_base_name = strtolower($package_base_name);
 917 $package_base_name = str_replace(array('\'', '"', ' ', '|', '\\', '/', '<', '>', ':'), '_' , $package_base_name);
 918 $package_base_name = preg_replace("/[^A-Za-z0-9._\-]/", '', $package_base_name);
 919
 920 if (is_dir(AT_CONTENT_DIR . $_SESSION['course_id'].'/'.$package_base_name)) {
 921         $package_base_name .= '_'.date('ymdHis');
 922 }
 923
 924 if ($package_base_path) {
 925         $package_base_path = implode('/', $package_base_path);
 926 } elseif (empty($package_base_path)){
 927         $package_base_path = '';
 928 }
 929
 930 if ($xml_base_path) {
 931         $package_base_path = $xml_base_path . $package_base_path;
 932
 933         mkdir(AT_CONTENT_DIR .$_SESSION['course_id'].'/'.$xml_base_path);
 934         $package_base_name = $xml_base_path . $package_base_name;
 935 }
 936
 937 /* get the top level content ordering offset */
 938 $sql    = "SELECT MAX(ordering) AS ordering FROM ".TABLE_PREFIX."content WHERE course_id=$_SESSION[course_id] AND content_parent_id=$cid";
 939 $result = mysql_query($sql, $db);
 940 $row    = mysql_fetch_assoc($result);
 941 $order_offset = intval($row['ordering']); /* it's nice to have a real number to deal with */
 942 $lti_offset = array();  //since we don't need lti tools, the ordering needs to be subtracted
 943 //reorder the items stack
 944 $items = rehash($items);
 945 //debug($items);exit;
 946 foreach ($items as $item_id => $content_info)
 947 {
 948         //formatting field, default 1
 949         $content_formatting = 1;        //CONTENT_TYPE_CONTENT
 950
 951         //don't want to display glossary as a page
 952         if ($content_info['href']== $glossary_path . 'glossary.xml'){
 953                 continue;
 954         }
 955
 956         //if discussion tools, add it to the list of unhandled dts
 957         if ($content_info['type']=='imsdt_xmlv1p0'){
 958                 //if it will be taken care after (has dependency), then move along.
 959                 if (in_array($item_id, $avail_dt)){
 960                         $lti_offset[$content_info['parent_content_id']]++;
 961                         continue;
 962                 }
 963         }
 964
 965         //handle the special case of cc import, where there is no content association. The resource should
 966         //still be imported.
 967         if(!isset($content_info['parent_content_id'])){
 968                 //if this is a question bank
 969                 if ($content_info['type']=="imsqti_xmlv1p2/imscc_xmlv1p0/question-bank"){
 970                         addQuestions($content_info['href'], $content_info, $import_path);
 971                 }
 972         }
 973
 974         //if it has no title, most likely it is not a page but just a normal item, skip it
 975         if (!isset($content_info['title'])){
 976                 continue;
 977         }
 978
 979         //check dependency immediately, then handles it
 980         $head = '';
 981         if (is_array($content_info['dependency']) && !empty($content_info['dependency'])){
 982                 foreach($content_info['dependency'] as $dependency_ref){
 983                         //handle styles
 984                         /** handled by get_html_head in vitals.inc.php
 985                         if (preg_match('/(.*)\.css$/', $items[$dependency_ref]['href'])){
 986                                 //calculate where this is based on our current base_href.
 987                                 //assuming the dependency folders are siblings of the item
 988                                 $head = '<link rel="stylesheet" type="text/css" href="../'.$items[$dependency_ref]['href'].'" />';
 989                         }
 990                         */
 991                         //check if this is a discussion tool dependency
 992                         if ($items[$dependency_ref]['type']=='imsdt_xmlv1p0'){
 993                                 $items[$item_id]['forum'][$dependency_ref] = $items[$dependency_ref]['href'];
 994                         }
 995                         //check if this is a QTI dependency
 996                         if (strpos($items[$dependency_ref]['type'], 'imsqti_xmlv1p2/imscc_xmlv1p0') !== false){
 997                                 $items[$item_id]['tests'][$dependency_ref] = $items[$dependency_ref]['href'];
 998                         }
 999                 }
1000         }
1001
1002         //check file array, see if there are css.
1003         //edited nov 26, harris
1004         //removed cuz i added link to the html_tags
1005         /*
1006         if (is_array($content_info['file']) && !empty($content_info['file'])){
1007                 foreach($content_info['file'] as $dependency_ref){
1008                         //handle styles
1009                         if (preg_match('/(.*)\.css$/', $dependency_ref)){
1010                                 //calculate where this is based on our current base_href.
1011                                 //assuming the dependency folders are siblings of the item
1012                                 $head = '<link rel="stylesheet" type="text/css" href="'.$dependency_ref.'" />';
1013                         }
1014                 }
1015         }
1016         */
1017
1018         // remote href
1019         if (preg_match('/^http.*:\/\//', trim($content_info['href'])) )
1020         {
1021                 $content = '<a href="'.$content_info['href'].'" target="_blank">'.$content_info['title'].'</a>';
1022         }
1023         else
1024         {
1025                 if ($content_type == 'IMS Common Cartridge'){
1026                         //to handle import with purely images but nothing else
1027                         //don't need a content base path for it.
1028                         $content_new_path = $content_info['new_path'];
1029                         $content_info['new_path'] = '';
1030                 }
1031                 if (isset($content_info['href'], $xml_base_path)) {
1032                         $content_info['href'] = $xml_base_path . $content_info['href'];
1033                 }
1034                 if (!isset($content_info['href'])) {
1035                         // this item doesn't have an identifierref. so create an empty page.
1036                         // what we called a folder according to v1.2 Content Packaging spec
1037                         // Hop over
1038                         $content = '';
1039                         $ext = '';
1040                         $last_modified = date('Y-m-d H:i:s');
1041                 } else {
1042                         //$file_info = @stat(AT_CONTENT_DIR . 'import/'.$_SESSION['course_id'].'/'.$content_info['href']);
1043                         $file_info = @stat($import_path.$content_info['href']);
1044                         if ($file_info === false) {
1045                                 continue;
1046                         }
1047
1048                         //$path_parts = pathinfo(AT_CONTENT_DIR . 'import/'.$_SESSION['course_id'].'/'.$content_info['href']);
1049                         $path_parts = pathinfo($import_path.$content_info['href']);
1050                         $ext = strtolower($path_parts['extension']);
1051
1052                         $last_modified = date('Y-m-d H:i:s', $file_info['mtime']);
1053                 }
1054                 if (in_array($ext, array('gif', 'jpg', 'bmp', 'png', 'jpeg'))) {
1055                         /* this is an image */
1056                         $content = '<img src="'.$content_info['href'].'" alt="'.$content_info['title'].'" />';
1057                 } else if ($ext == 'swf') {
1058                         /* this is flash */
1059             /* Using default size of 550 x 400 */
1060
1061                         $content = '<object type="application/x-shockwave-flash" data="' . $content_info['href'] . '" width="550" height="400"><param name="movie" value="'. $content_info['href'] .'" /></object>';
1062
1063                 } else if ($ext == 'mov') {
1064                         /* this is a quicktime movie  */
1065             /* Using default size of 550 x 400 */
1066
1067                         $content = '<object classid="clsid:02BF25D5-8C17-4B23-BC80-D3488ABDDC6B" width="550" height="400" codebase="http://www.apple.com/qtactivex/qtplugin.cab"><param name="src" value="'. $content_info['href'] . '" /><param name="autoplay" value="true" /><param name="controller" value="true" /><embed src="' . $content_info['href'] .'" width="550" height="400" controller="true" pluginspage="http://www.apple.com/quicktime/download/"></embed></object>';
1068
1069                 /* Oct 19, 2009
1070                  * commenting this whole chunk out.  It's part of my test import codes, not sure why it's here,
1071                  * and I don't think it should be here.  Remove this whole comment after further testing and confirmation.
1072                  * @harris
1073                  *
1074                         //Mimic the array for now.
1075                         $test_attributes['resource']['href'] = $test_xml_file;
1076                         $test_attributes['resource']['type'] = isset($items[$item_id]['type'])?'imsqti_xmlv1p2':'imsqti_xmlv1p1';
1077                         $test_attributes['resource']['file'] = $items[$item_id]['file'];
1078 //                      $test_attributes['resource']['file'] = array($test_xml_file);
1079
1080                         //Get the XML file out and start importing them into our database.
1081                         //TODO: See question_import.php 287-289.
1082                         $qids = $qti_import->importQuestions($test_attributes);
1083
1084                  */
1085                 } else if ($ext == 'mp3') {
1086                         $content = '<object classid="clsid:02BF25D5-8C17-4B23-BC80-D3488ABDDC6B" width="200" height="15" codebase="http://www.apple.com/qtactivex/qtplugin.cab"><param name="src" value="'. $content_info['href'] . '" /><param name="autoplay" value="false" /><embed src="' . $content_info['href'] .'" width="200" height="15" autoplay="false" pluginspage="http://www.apple.com/quicktime/download/"></embed></object>';
1087                 } else if (in_array($ext, array('wav', 'au'))) {
1088                         $content = '<embed SRC="'.$content_info['href'].'" autostart="false" width="145" height="60"><noembed><bgsound src="'.$content_info['href'].'"></noembed></embed>';
1089
1090                 } else if (in_array($ext, array('txt', 'css', 'html', 'htm', 'csv', 'asc', 'tsv', 'xml', 'xsl'))) {
1091                         if ($content_type == 'IMS Common Cartridge'){
1092                                 $content_info['new_path'] = $content_new_path;
1093                         }
1094
1095                         /* this is a plain text file */
1096                         //$content = file_get_contents(AT_CONTENT_DIR . 'import/'.$_SESSION['course_id'].'/'.$content_info['href']);
1097                         $content = file_get_contents($import_path.$content_info['href']);
1098                         if ($content === false) {
1099                                 /* if we can't stat() it then we're unlikely to be able to read it */
1100                                 /* so we'll never get here. */
1101                                 continue;
1102                         }
1103
1104                         // get the contents of the 'head' element
1105                         $head .= get_html_head_by_tag($content, $html_head_tags);
1106
1107                         // Specifically handle eXe package
1108                         // NOTE: THIS NEEDS WORK! TO FIND A WAY APPLY EXE .CSS FILES ONLY ON COURSE CONTENT PART.
1109                         // NOW USE OUR OWN .CSS CREATED SOLELY FOR EXE
1110                         $isExeContent = false;
1111
1112                         // check xml file in eXe package
1113                         if (preg_match("/<organization[ ]*identifier=\"eXe*>*/", $ims_manifest_xml))
1114                         {
1115                                 $isExeContent = true;
1116                         }
1117
1118                         // use ATutor's eXe style sheet as the ones from eXe conflicts with ATutor's style sheets
1119                         if ($isExeContent)
1120                         {
1121                                 $head = preg_replace ('/(<style.*>)(.*)(<\/style>)/ms', '\\1@import url(/docs/exestyles.css);\\3', $head);
1122                         }
1123
1124                         // end of specifically handle eXe package
1125
1126                         $content = get_html_body($content);
1127                         if ($contains_glossary_terms)
1128                         {
1129                                 // replace glossary content package links to real glossary mark-up using [?] [/?]
1130                                 // refer to bug 3641, edited by Harris
1131                                 $content = preg_replace('/<a href="([.\w\d\s]+[^"]+)" target="body" class="at-term">([.\w\d\s&;"]+|.*)<\/a>/i', '[?]\\2[/?]', $content);
1132                         }
1133
1134                         /* potential security risk? */
1135                         if ( strpos($content_info['href'], '..') === false && !preg_match('/((.*)\/)*tests\_[0-9]+\.xml$/', $content_info['href'])) {
1136 //                              @unlink(AT_CONTENT_DIR . 'import/'.$_SESSION['course_id'].'/'.$content_info['href']);
1137                         }
1138
1139                         /* overwrite content if this is discussion tool. */
1140                         if ($content_info['type']=='imsdt_xmlv1p0'){
1141                                 $dt_parser = new DiscussionToolsParser();
1142                                 $xml_content = @file_get_contents($import_path . $content_info['href']);
1143                                 $dt_parser->parse($xml_content);
1144                                 $forum_obj = $dt_parser->getDt();
1145                                 $content = $forum_obj->getText();
1146                                 unset($forum_obj);
1147                                 $dt_parser->close();
1148                         }
1149                 } else if ($ext) {
1150                         /* non text file, and can't embed (example: PDF files) */
1151                         $content = '<a href="'.$content_info['href'].'">'.$content_info['title'].'</a>';
1152                 }
1153         }
1154         $content_parent_id = $cid;
1155         if ($content_info['parent_content_id'] !== 0) {
1156                 $content_parent_id = $items[$content_info['parent_content_id']]['real_content_id'];
1157                 //if it's not there, use $cid
1158                 if (!$content_parent_id){
1159                         $content_parent_id = $cid;
1160                 }
1161         }
1162
1163         $my_offset = 0;
1164         if ($content_parent_id == $cid) {
1165                 $my_offset = $order_offset;
1166         }
1167
1168         /* replace the old path greatest common denomiator with the new package path. */
1169         /* we don't use str_replace, b/c there's no knowing what the paths may be         */
1170         /* we only want to replace the first part of the path.
1171         */
1172         if(is_array($all_package_base_path)){
1173                 $all_package_base_path = implode('/', $all_package_base_path);
1174         }
1175
1176         if ($all_package_base_path != '') {
1177                 $content_info['new_path'] = $package_base_name . substr($content_info['new_path'], strlen($all_package_base_path));
1178         } else {
1179                 $content_info['new_path'] = $package_base_name . '/' . $content_info['new_path'];
1180         }
1181
1182         //handles weblinks
1183         if ($content_info['type']=='imswl_xmlv1p0'){
1184                 $weblinks_parser = new WeblinksParser();
1185                 $xml_content = @file_get_contents($import_path . $content_info['href']);
1186                 $weblinks_parser->parse($xml_content);
1187                 $content_info['title'] = $weblinks_parser->getTitle();
1188                 $content = $weblinks_parser->getUrl();
1189                 $content_folder_type = CONTENT_TYPE_WEBLINK;
1190                 $content_formatting = 2;
1191         }
1192         $head = addslashes($head);
1193         $content_info['title'] = addslashes($content_info['title']);
1194         $content_info['test_message'] = addslashes($content_info['test_message']);
1195
1196         //if this file is a test_xml, create a blank page instead, for imscc.
1197         if (preg_match('/((.*)\/)*tests\_[0-9]+\.xml$/', $content_info['href'])
1198                 || preg_match('/imsqti\_(.*)/', $content_info['type'])) {
1199                 $content = ' ';
1200         } else {
1201                 $content = addslashes($content);
1202         }
1203
1204         //check for content_type
1205         if ($content_formatting!=CONTENT_TYPE_WEBLINK){
1206                 $content_folder_type = (!isset($content_info['type'])?CONTENT_TYPE_FOLDER:CONTENT_TYPE_CONTENT);
1207         }
1208
1209         $sql= 'INSERT INTO '.TABLE_PREFIX.'content'
1210               . '(course_id,
1211                   content_parent_id,
1212                   ordering,
1213                   last_modified,
1214                   revision,
1215                   formatting,
1216                   release_date,
1217                   head,
1218                   use_customized_head,
1219                   keywords,
1220                   content_path,
1221                   title,
1222                   text,
1223                           test_message,
1224                           content_type)
1225                VALUES
1226                              ('.$_SESSION['course_id'].','
1227                              .intval($content_parent_id).','
1228                              .($content_info['ordering'] + $my_offset - $lti_offset[$content_info['parent_content_id']] + 1).','
1229                              .'"'.$last_modified.'",
1230                               0,'
1231                              .$content_formatting.' ,
1232                               NOW(),"'
1233                              . $head .'",
1234                              1,
1235                               "",'
1236                              .'"'.$content_info['new_path'].'",'
1237                              .'"'.$content_info['title'].'",'
1238                              .'"'.$content.'",'
1239                                  .'"'.$content_info['test_message'].'",'
1240                                  .$content_folder_type.')';
1241
1242         $result = mysql_query($sql, $db) or die(mysql_error());
1243
1244         /* get the content id and update $items */
1245         $items[$item_id]['real_content_id'] = mysql_insert_id($db);
1246
1247         /* get the tests associated with this content */
1248         if (!empty($items[$item_id]['tests']) || strpos($items[$item_id]['type'], 'imsqti_xmlv1p2/imscc_xmlv1p0') !== false){
1249                 $qti_import = new QTIImport($import_path);
1250                 if (isset($items[$item_id]['tests'])){
1251                         $loop_var = $items[$item_id]['tests'];
1252                 } else {
1253                         $loop_var = $items[$item_id]['file'];
1254                 }
1255
1256                 foreach ($loop_var as $array_id => $test_xml_file){
1257                         //check if this item is the qti item object, or it is the content item obj
1258                         //switch it to qti obj if it's content item obj
1259                         if ($items[$item_id]['type'] == 'webcontent'){
1260                                 $item_qti = $items[$array_id];
1261                         } else {
1262                                 $item_qti = $items[$item_id];
1263                         }
1264                         //call subrountine to add the questions.
1265                         $qids = addQuestions($test_xml_file, $item_qti, $import_path);
1266
1267                         //import test
1268                         if ($test_title==''){
1269                                 $test_title = $content_info['title'];
1270                         }
1271
1272                         $tid = $qti_import->importTest($test_title);
1273
1274                         //associate question and tests
1275                         foreach ($qids as $order=>$qid){
1276                                 if (isset($qti_import->weights[$order])){
1277                                         $weight = round($qti_import->weights[$order]);
1278                                 } else {
1279                                         $weight = 0;
1280                                 }
1281                                 $new_order = $order + 1;
1282                                 $sql = "INSERT INTO " . TABLE_PREFIX . "tests_questions_assoc" .
1283                                                 "(test_id, question_id, weight, ordering, required) " .
1284                                                 "VALUES ($tid, $qid, $weight, $new_order, 0)";
1285                                 $result = mysql_query($sql, $db);
1286                         }
1287
1288                         //associate content and test
1289                         $sql =  'INSERT INTO ' . TABLE_PREFIX . 'content_tests_assoc' .
1290                                         '(content_id, test_id) ' .
1291                                         'VALUES (' . $items[$item_id]['real_content_id'] . ", $tid)";
1292                         $result = mysql_query($sql, $db);
1293
1294 //                      if (!$msg->containsErrors()) {
1295 //                              $msg->addFeedback('IMPORT_SUCCEEDED');
1296 //                      }
1297                 }
1298         }
1299
1300         /* get the a4a related xml */
1301         if (isset($items[$item_id]['a4a_import_enabled']) && isset($items[$item_id]['a4a']) && !empty($items[$item_id]['a4a'])) {
1302                 $a4a_import = new A4aImport($items[$item_id]['real_content_id']);
1303                 $a4a_import->setRelativePath($items[$item_id]['new_path']);
1304                 $a4a_import->importA4a($items[$item_id]['a4a']);
1305         }
1306
1307         /* get the discussion tools (dependent to content)*/
1308         if (isset($items[$item_id]['forum']) && !empty($items[$item_id]['forum'])){
1309                 foreach($items[$item_id]['forum'] as $forum_ref => $forum_link){
1310                         $dt_parser = new DiscussionToolsParser();
1311                         $dt_import = new DiscussionToolsImport();
1312
1313                         //if this forum has not been added, parse it and add it.
1314                         if (!isset($added_dt[$forum_ref])){
1315                                 $xml_content = @file_get_contents($import_path . $forum_link);
1316                                 $dt_parser->parse($xml_content);
1317                                 $forum_obj = $dt_parser->getDt();
1318                                 $dt_import->import($forum_obj, $items[$item_id]['real_content_id']);
1319                                 $added_dt[$forum_ref] = $dt_import->getFid();
1320                         }
1321                         //associate the fid and content id
1322                         $dt_import->associateForum($items[$item_id]['real_content_id'], $added_dt[$forum_ref]);
1323                 }
1324         } elseif ($items[$item_id]['type']=='imsdt_xmlv1p0'){
1325                 //optimize this, repeated codes as above
1326                 $dt_parser = new DiscussionToolsParser();
1327                 $dt_import = new DiscussionToolsImport();
1328                 $xml_content = @file_get_contents($import_path . $content_info['href']);
1329                 $dt_parser->parse($xml_content);
1330                 $forum_obj = $dt_parser->getDt();
1331                 $dt_import->import($forum_obj, $items[$item_id]['real_content_id']);
1332                 $added_dt[$item_id] = $dt_import->getFid();
1333
1334                 //associate the fid and content id
1335                 $dt_import->associateForum($items[$item_id]['real_content_id'], $added_dt[$item_id]);
1336         }
1337 }
1338 //exit;//harris
1339 if ($package_base_path == '.') {
1340         $package_base_path = '';
1341 }
1342
1343 // loop through the files outside the package folder, and copy them to its relative path
1344 if (is_dir(AT_CONTENT_DIR . 'import/'.$_SESSION['course_id'].'/resources')) {
1345         $handler = opendir(AT_CONTENT_DIR . 'import/'.$_SESSION['course_id'].'/resources');
1346         while ($file = readdir($handler)){
1347                 $filename = AT_CONTENT_DIR . 'import/'.$_SESSION['course_id'].'/resources/'.$file;
1348                 if(is_file($filename)){
1349                         @rename($filename, AT_CONTENT_DIR .$_SESSION['course_id'].'/'.$package_base_name.'/'.$file);
1350                 }
1351         }
1352         closedir($handler);
1353 }
1354 //takes care of the condition where the whole package doesn't have any contents but question banks
1355 //also is the case of urls
1356 if(is_array($all_package_base_path)){
1357         $all_package_base_path = implode('/', $all_package_base_path);
1358 }
1359 if(strpos($all_package_base_path, 'http:/')===false){
1360     if (@rename($import_path.$all_package_base_path, AT_CONTENT_DIR .$_SESSION['course_id'].'/'.$package_base_name) === false) {
1361         if (!$msg->containsErrors()) {
1362             $msg->addError('IMPORT_FAILED');
1363         }
1364     }
1365 }
1366 //check if there are still resources missing
1367 foreach($items as $idetails){
1368         $temp_path = pathinfo($idetails['href']);
1369         @rename(AT_CONTENT_DIR . 'import/'.$_SESSION['course_id'].'/'.$temp_path['dirname'], AT_CONTENT_DIR .$_SESSION['course_id'].'/'.$package_base_name . '/' . $temp_path['dirname']);
1370 }
1371 clr_dir(AT_CONTENT_DIR . 'import/'.$_SESSION['course_id']);
1372
1373 if (file_exists($full_filename)) {
1374         @unlink($full_filename);
1375 }
1376
1377
1378 if ($_POST['s_cid']){
1379         if (!$msg->containsErrors()) {
1380                 $msg->addFeedback('ACTION_COMPLETED_SUCCESSFULLY');
1381         }
1382         header('Location: ../editor/edit_content.php?cid='.intval($_POST['cid']));
1383         exit;
1384 } else {
1385         if (!$msg->containsErrors()) {
1386                 $msg->addFeedback('ACTION_COMPLETED_SUCCESSFULLY');
1387         }
1388         if ($_GET['tile']) {
1389                 header('Location: '.AT_BASE_HREF.'mods/_standard/tile_search/index.php');
1390         } else {
1391                 header('Location: ./index.php?cid='.intval($_POST['cid']));
1392         }
1393         exit;
1394 }
1395
1396 ?>