home/ims/ims_import.php

   1 <?php
   2 /************************************************************************/
   3 /* AContent                                                             */
   4 /************************************************************************/
   5 /* Copyright (c) 2010                                                   */
   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
  13 /** Commented by Cindy Li on Feb 2, 2010
  14  * Modified from ATutor mods/_core/imscp/ims_import.php, SVN revision 9126
  15  */
  16
  17 define('TR_INCLUDE_PATH', '../../include/');
  18
  19 // Validate OAuth token and set $SESSION['user_id']
  20 // Must come before require(vitals.inc.php) because vitals redirects to index page
  21 // when $SESSION['user_id'] is not set
  22 $oauth_import = false;  // whether the import request is from oauth web service
  23
  24 // By default, enable the import of associated tests and a4a objects
  25
  26 if (!isset($_POST['allow_test_import'])) $_POST['allow_test_import'] = 1;
  27 if (!isset($_POST['allow_a4a_import'])) $_POST['allow_a4a_import'] = 1;
  28
  29 // the import request is from oauth web service, find the user id from the given token
  30 if (isset($_GET['oauth_token']))
  31 {
  32         require_once(TR_INCLUDE_PATH.'config.inc.php');
  33         require_once(TR_INCLUDE_PATH.'constants.inc.php');
  34
  35         if ($_GET['oauth_token'] == '')
  36         {
  37                 echo "error=".urlencode('Empty OAuth token');
  38                 exit;
  39         }
  40         else
  41         {
  42                 $oauth_import = true;
  43                 require_once(TR_INCLUDE_PATH.'classes/DAO/OAuthServerTokensDAO.class.php');
  44                 $oAuthServerTokensDAO = new OAuthServerTokensDAO();
  45                 $token_row = $oAuthServerTokensDAO->getByTokenAndType($_GET['oauth_token'], 'access');
  46
  47                 if (!is_array($token_row))
  48                 {
  49                         echo "error=".urlencode('Invalid OAuth token');
  50                         exit;
  51                 }
  52                 else if ($oAuthServerTokensDAO->isTokenExpired($_GET['oauth_token']))
  53                 {
  54                         echo "error=".urlencode('OAuth token expired');
  55                         exit;
  56                 }
  57
  58                 $_user_id = $token_row[0]['user_id'];
  59         }
  60 }
  61
  62 require(TR_INCLUDE_PATH.'vitals.inc.php');
  63
  64 require_once(TR_INCLUDE_PATH.'classes/Utility.class.php');
  65 require_once(TR_INCLUDE_PATH.'../home/classes/ContentUtility.class.php');
  66 require_once(TR_INCLUDE_PATH.'classes/DAO/UsersDAO.class.php');
  67 require_once(TR_INCLUDE_PATH.'classes/DAO/CoursesDAO.class.php');
  68 require_once(TR_INCLUDE_PATH.'classes/DAO/UserCoursesDAO.class.php');
  69 require_once(TR_INCLUDE_PATH.'classes/DAO/ContentDAO.class.php');
  70 require_once(TR_INCLUDE_PATH.'classes/DAO/TestsQuestionsAssocDAO.class.php');
  71 require_once(TR_INCLUDE_PATH.'classes/DAO/ContentTestsAssocDAO.class.php');
  72 require_once(TR_INCLUDE_PATH.'classes/FileUtility.class.php'); /* for clr_dir() and preImportCallBack and dirsize() */
  73
  74 require_once(TR_INCLUDE_PATH.'lib/pclzip.lib.php');
  75 require_once(TR_INCLUDE_PATH.'lib/pclzip_callback.lib.php');
  76 require_once(TR_INCLUDE_PATH.'lib/qti.inc.php');
  77 //require(TR_INCLUDE_PATH.'classes/QTI/QTIParser.class.php');
  78 require_once(TR_INCLUDE_PATH.'classes/QTI/QTIImport.class.php');
  79 require_once(TR_INCLUDE_PATH.'classes/A4a/A4aImport.class.php');
  80 require(TR_INCLUDE_PATH.'../home/ims/ns.inc.php');      //namespace, no longer needs, delete it after it's stable.
  81 require_once(TR_INCLUDE_PATH.'classes/Weblinks/WeblinksParser.class.php');
  82 require(TR_INCLUDE_PATH.'classes/DiscussionTools/DiscussionToolsParser.class.php');
  83 require(TR_INCLUDE_PATH.'classes/DiscussionTools/DiscussionToolsImport.class.php');
  84
  85 // make sure the user has author privilege
  86 Utility::authenticate(TR_PRIV_ISAUTHOR);
  87
  88 /* to avoid timing out on large files */
  89 @set_time_limit(0);
  90 $_SESSION['done'] = 1;
  91
  92 $html_head_tags = array("style", "script", "link");
  93
  94 $package_base_path = '';
  95 $package_real_base_path = '';   //the path to save the contents
  96 $all_package_base_path = array();
  97 $xml_base_path = '';
  98 $element_path = array();
  99 $imported_glossary = array();
 100 $character_data = '';
 101 $test_message = '';
 102 $test_title = '';
 103 $content_type = '';
 104 $skip_ims_validation = false;
 105 $added_dt = array();    //the mapping of discussion tools that are added
 106 $avail_dt = array();    //list of discussion tools that have not been handled
 107
 108 function check_available_size($course_id)
 109 {
 110         global $coursesDAO, $MaxCourseSize, $import_path, $msg, $oauth_import;
 111
 112         $q_row = $coursesDAO->get($course_id);
 113
 114         //$sql  = "SELECT max_quota FROM ".TABLE_PREFIX."courses WHERE course_id=$_SESSION[course_id]";
 115         //$result = mysql_query($sql, $db);
 116         //$q_row        = mysql_fetch_assoc($result);
 117
 118         if ($q_row['max_quota'] == TR_COURSESIZE_UNLIMITED) return;
 119         else $zip_size_limit = $MaxCourseSize;
 120
 121         $totalBytes   = FileUtility::dirsize($import_path);
 122
 123         $total_after  = $zip_size_limit - $totalBytes;
 124
 125         if (is_dir(TR_CONTENT_DIR . $course_id.'/'))
 126         {
 127                 $course_total = FileUtility::dirsize(TR_CONTENT_DIR . $course_id.'/');
 128                 $total_after  -= $course_total;
 129         }
 130
 131         if ($total_after < 0) {
 132                 /* remove the content dir, since there's no space for it */
 133                 $errors = array('NO_CONTENT_SPACE', number_format(-1*($total_after/TR_KBYTE_SIZE), 2 ) );
 134                 $msg->addError($errors);
 135
 136                 // Clean up import path and inserted course row
 137                 FileUtility::clr_dir($import_path);
 138                 $coursesDAO->Delete($course_id);
 139
 140                 if (isset($_GET['tile'])) {
 141                         header('Location: '.$_base_path.'tools/tile/index.php');
 142                 }
 143                 else if ($oauth_import) {
 144                         echo "error=".urlencode('No space for the content.');
 145                 }
 146                 else {
 147                         header('Location: '.$_SERVER['HTTP_REFERER']);
 148                 }
 149                 exit;
 150         }
 151 }
 152
 153 /*
 154  * return the error messages represented by the given array
 155  * @author      Mike A.
 156  * @ref         http://ca3.php.net/manual/en/domdocument.schemavalidate.php
 157  */
 158 function libxml_display_error($error)
 159 {
 160     $return = "<br/>\n";
 161     switch ($error->level) {
 162         case LIBXML_ERR_WARNING:
 163             $return .= "<b>Warning $error->code</b>: ";
 164             break;
 165         case LIBXML_ERR_ERROR:
 166             $return .= "<b>Error $error->code</b>: ";
 167             break;
 168         case LIBXML_ERR_FATAL:
 169             $return .= "<b>Fatal Error $error->code</b>: ";
 170             break;
 171     }
 172     $return .= trim($error->message);
 173     if ($error->file) {
 174         $return .=    " in <b>$error->file</b>";
 175     }
 176     $return .= " on line <b>$error->line</b>\n";
 177
 178     return $return;
 179 }
 180
 181 /**
 182  * Validate all the XML in the package, including checking XSDs, missing data.
 183  * @param       string          the path of the directory that contains all the package files
 184  * @return      boolean         true if every file exists in the manifest, false if any is missing.
 185  */
 186 function checkResources($import_path){
 187         global $items, $msg, $skip_ims_validation, $avail_dt;
 188
 189         if (!is_dir($import_path)){
 190                 return;
 191         }
 192
 193         //if the package has access for all content, skip validation for now.
 194         //todo: import the XSD into our validator
 195         if ($skip_ims_validation){
 196                 return true;
 197         }
 198
 199         //generate a file tree
 200         $data = rscandir($import_path);
 201
 202         //check if every file is presented in the manifest
 203         foreach($data as $filepath){
 204                 $filepath = substr($filepath, strlen($import_path));
 205
 206                 //validate xml via its xsd/dtds
 207                 if (preg_match('/(.*)\.xml/', $filepath)){
 208                         libxml_use_internal_errors(true);
 209                         $dom = new DOMDocument();
 210                         $dom->load(realpath($import_path.$filepath));
 211                         if (!@$dom->schemaValidate('main.xsd')){
 212                                 $errors = libxml_get_errors();
 213                                 foreach ($errors as $error) {
 214                                         //suppress warnings
 215                                         if ($error->level==LIBXML_ERR_WARNING){
 216                                                 continue;
 217                                         }
 218                                         $msg->addError(array('IMPORT_CARTRIDGE_FAILED', libxml_display_error($error)));
 219                                 }
 220                                 libxml_clear_errors();
 221                         }
 222                 }
 223         }
 224
 225         //Create an array that mimics the structure of the data array, based on the xml items
 226         $filearray = array();
 227         foreach($items as $name=>$fileinfo){
 228                 if(isset($fileinfo['file']) && is_array($fileinfo['file']) && !empty($fileinfo['file'])){
 229                         foreach($fileinfo['file'] as $fn){
 230                                 if (!in_array(realpath($import_path.$fn), $filearray)){
 231                                         //if url, skip
 232                                         if (preg_match('/^http[s]?\:/', $fn) == 0){
 233                                                 $filearray[] = realpath($import_path. $fn);
 234                                         }
 235                                 }
 236                         }
 237                 }
 238
 239                 //validate the xml by its schema
 240                 if (preg_match('/imsqti\_(.*)/', $fileinfo['type'])){
 241                         $qti = new QTIParser($fileinfo['type']);
 242                         $xml_content = @file_get_contents($import_path . $fileinfo['href']);
 243                         $qti->parse($xml_content); //will add error to $msg if failed
 244                 }
 245
 246                 //add all dependent discussion tools to a list
 247                 if(isset($fileinfo['dependency']) && !empty($fileinfo['dependency'])){
 248                         $avail_dt = array_merge($avail_dt, $fileinfo['dependency']);
 249                 }
 250         }
 251
 252         //check if all files in the xml is presented in the archieve
 253         $result = array_diff($filearray, $data);
 254         //using sizeof because array_diff only
 255         //returns an array containing all the entries from array1  that are not present in any of the
 256         //other arrays.
 257         //Using sizeof make sure it's not a subset of array2.
 258         //-1 on data because it always contain the imsmanifest.xml file
 259         if (!$skip_ims_validation){
 260                 if (!empty($result) || sizeof($data)-1>sizeof($filearray)){
 261                         $msg->addError(array('IMPORT_CARTRIDGE_FAILED', _AT('ims_missing_references')));
 262                 }
 263         }
 264         return true;
 265 }
 266
 267 /*
 268  * @example rscandir(dirname(__FILE__).'/'));
 269  * @param string $base
 270  * @param array $omit
 271  * @param array $data
 272  * @return array
 273  */
 274 function rscandir($base='', &$data=array()) {
 275   $array = array_diff(scandir($base), array('.', '..')); # remove ' and .. from the array */
 276   foreach($array as $value) : /* loop through the array at the level of the supplied $base */
 277
 278     if (is_dir($base.$value)) : /* if this is a directory */
 279 //        don't save the directory name
 280       $data = rscandir($base.$value.'/', $data); /* then make a recursive call with the
 281       current $value as the $base supplying the $data array to carry into the recursion */
 282
 283     elseif (is_file($base.$value)) : /* else if the current $value is a file */
 284       $data[] = realpath($base.$value); /* just add the current $value to the $data array */
 285
 286     endif;
 287
 288   endforeach;
 289   return $data; // return the $data array
 290
 291 }
 292
 293 /**
 294  * Function to restructure the $items.  So that old import will merge the top page into its children, and
 295  * create a new folder on top of it
 296  */
 297 function rehash($items){
 298         global $order;
 299         $parent_page_maps = array();    //old=>new
 300         $temp_popped_items = array();
 301         $rehashed_items = array();      //the reconstructed array
 302         foreach($items as $id => $content){
 303                 $parent_obj = $items[$content['parent_content_id']];
 304                 $rehashed_items[$id] = $content;        //copy
 305                 if (isset($parent_page_maps[$content['parent_content_id']])){
 306                         $rehashed_items [$id]['parent_content_id'] = $parent_page_maps[$content['parent_content_id']];
 307                         $rehashed_items [$id]['ordering']++;
 308                 }
 309                 //If its parent page is a top page and have an identiferref
 310                 elseif (isset($parent_obj) && isset($parent_obj['href'])){
 311                         if (!isset($parent_obj['href'])){
 312                                 //check if this top page is already a folder, if so, next.
 313                                 continue;
 314                         }
 315                         //else, make its parent page to a folder
 316                         $new_item['title'] = $parent_obj['title'];
 317                         //check if this parent has been modified, if so, chnage it
 318                         if (isset($parent_page_maps[$parent_obj['parent_content_id']])){
 319                             $new_item['parent_content_id'] = $parent_page_maps[$parent_obj['parent_content_id']];
 320                         } else {
 321                         $new_item['parent_content_id'] = $parent_obj['parent_content_id'];
 322             }
 323                         //all ordering needs to be +1 because we are creating a new folder on top of
 324                         //everything, except the first page.
 325                         $new_item['ordering'] = $parent_obj['ordering'];
 326                         if ($new_item['parent_content_id']!='0'){
 327                                 $new_item['ordering']++;
 328                         }
 329
 330                 //assign this new parent folder to the pending items array
 331                         $new_item_name = $content['parent_content_id'].'_FOLDER';
 332                         //a not so brilliant way to append the folder in its appropriate position
 333                         $reordered_hashed_items = array();  //use to store the new rehashed item with the correct item order
 334                         foreach($rehashed_items as $rh_id=>$rh_content){
 335                             if ($rh_id == $content['parent_content_id']){
 336                                 //add the folder in before the parent subpage.
 337                                 $reordered_hashed_items[$new_item_name] = $new_item;
 338                             }
 339                             $reordered_hashed_items[$rh_id] = $rh_content;  //clone
 340                         }
 341                         $rehashed_items = $reordered_hashed_items;  //replace it back
 342                         unset($reordered_hashed_items);
 343                         $parent_page_maps[$content['parent_content_id']] = $new_item_name;  //save this page on the hash map
 344
 345                         //reconstruct the parent
 346                         $rehashed_items[$content['parent_content_id']]['parent_content_id'] = $parent_page_maps[$content['parent_content_id']];
 347                         $rehashed_items[$content['parent_content_id']]['ordering'] = 0; //always the first one.
 348
 349                         //reconstruct itself
 350                         $rehashed_items[$id]['parent_content_id'] = $parent_page_maps[$content['parent_content_id']];
 351                         $rehashed_items[$id]['ordering']++;
 352
 353                 }
 354         }
 355         return $rehashed_items;
 356 }
 357
 358 /**
 359  * Take out the common path within all $items['new_path'].
 360  * This allows import/export repeatedly without duplicating its path
 361  * @param   array   contains the breakdown of all resources in the XML
 362  */
 363 function removeCommonPath($items){
 364     $common_path;
 365     $quit = false;  //a flag that is set if it's not the first time being run.
 366
 367     $filearray = array();
 368     //get all files listed in the manifest
 369     foreach($items as $name=>$fileinfo){
 370                 if(isset($fileinfo['file']) && is_array($fileinfo['file']) && !empty($fileinfo['file'])){
 371                         foreach($fileinfo['file'] as $fn){
 372                                 if (!in_array($fn, $filearray)){
 373                                         if (preg_match('/^http[s]?\:/', $fn) == 0){
 374                                                 $filearray[] = $fn;
 375                                         }
 376                                 }
 377                         }
 378                 }
 379         }
 380
 381     foreach($filearray as $index=>$path){
 382         //hack
 383         //check if this is a XML file; if so, skip through,
 384         //cause XML most likely isn't a content resource.
 385         $ext = substr($path, (strrpos($path, '.')+1));
 386         if($ext=='xml'){
 387             continue;
 388         }
 389
 390         //if common path is empty, assign the first path to it.
 391         if ($common_path=='' && $quit==false){
 392             $common_path = $path;
 393             $quit = true;   //the next time common_path is empty, quit;
 394             continue;
 395         }
 396         //we use '/' here instead of DIRECTORY_SEPARATOR because php would
 397         //actually use '\' and return the whole string.
 398         $common_array = explode('/', $common_path);
 399         $path_array = explode('/', $path);
 400         //convert path_array to absolute path
 401         //TODO: array_search is slow, build a faster search
 402         $pos=array_search('..', $path_array);
 403         while($pos=array_search('..', $path_array)){
 404             array_splice($path_array, $pos-1, 2);
 405         }
 406         $intersect_array = array_intersect($common_array, $path_array);
 407         $common_path = implode('/', $intersect_array);
 408     }
 409
 410     // If this path (including file extension) is in the filearray,
 411     // then this means there is only 1 file in the array, implies there
 412     // wasn't any intersection at all.  In this case, use the base root.
 413     if(in_array($common_path, $filearray)) {
 414         $common_path = '';
 415     }
 416
 417     return $common_path;
 418 }
 419
 420
 421 /**
 422  * This function will take the test accessment XML and add these to the database.
 423  * @param       string  The path of the XML, without the import_path.
 424  * @param       mixed   An item singleton.  Contains the info of this item, namely, the accessment details.
 425  *                                      The item must be an object created by the ims class.
 426  * @param       string  the import path
 427  * @return      mixed   An Array that contains all the question IDs that have been imported.
 428  */
 429  function addQuestions($xml, $item, $import_path){
 430         global $test_title;
 431         $qti_import = new QTIImport($import_path);
 432         $tests_xml = $import_path.$xml;
 433
 434         //Mimic the array for now.
 435         $test_attributes['resource']['href'] = $item['href'];
 436         $test_attributes['resource']['type'] = preg_match('/imsqti_xmlv1p2/', $item['type'])==1?'imsqti_xmlv1p2':'imsqti_xmlv1p1';
 437         $test_attributes['resource']['file'] = $item['file'];
 438
 439         //Get the XML file out and start importing them into our database.
 440         //TODO: See question_import.php 287-289.
 441         $qids = $qti_import->importQuestions($test_attributes);
 442         $test_title = $qti_import->title;
 443
 444         return $qids;
 445  }
 446
 447
 448         /* called at the start of en element */
 449         /* builds the $path array which is the path from the root to the current element */
 450         function startElement($parser, $name, $attrs) {
 451                 global $items, $path, $package_base_path, $all_package_base_path, $package_real_base_path;
 452                 global $element_path, $import_path, $skip_ims_validation;
 453                 global $xml_base_path, $test_message, $content_type;
 454                 global $current_identifier, $msg, $ns, $ns_cp;
 455                 global $course_primary_lang;
 456
 457                 // get language from CONTENT PACKAGE
 458                 if (substr($element_path[count($element_path)-1], -6) == ':title' && substr($name, -11) == ':langstring') {
 459                         $course_primary_lang = trim($attrs['xml:lang']);
 460                 }
 461
 462                 //validate namespaces
 463                 if(!$skip_ims_validation && isset($attrs['xsi:schemaLocation']) && $name=='manifest'){
 464                         $schema_location = array();
 465                         $split_location = preg_split('/[\r\n\s]+/', trim($attrs['xsi:schemaLocation']));
 466
 467                         //check if the namespace is actually right, have an array or some sort in IMS class
 468                         if(sizeof($split_location)%2==1){
 469                                 //schema is not in the form of "The first URI reference in each pair is a namespace name,
 470                                 //and the second is the location of a schema that describes that namespace."
 471                                 //$msg->addError('MANIFEST_NOT_WELLFORM');
 472                                 $msg->addError(array('IMPORT_CARTRIDGE_FAILED', _AT('schema_error')));
 473                         }
 474
 475                         //turn the xsi:schemaLocation URI into a schema that describe namespace.
 476                         //name = url
 477                         //http://msdn.microsoft.com/en-us/library/ms256100(VS.85).aspx
 478                         //http://www.w3.org/TR/xmlschema-1/
 479                         for($i=0; $i < sizeof($split_location);$i=$i+2){
 480                                 //if the key of the namespace is not defined. Throw error.
 481                                 if(!isset($ns[$split_location[$i]]) && !isset($ns_cp[$split_location[$i]])){
 482                                         $msg->addError(array('IMPORT_CARTRIDGE_FAILED', _AT('schema_error')));
 483                                 }
 484                         }
 485                 } else {
 486                         //throw error
 487                 }
 488
 489                 if ($name == 'manifest' && isset($attrs['xml:base']) && $attrs['xml:base']) {
 490                         $xml_base_path = $attrs['xml:base'];
 491                 } else if ($name == 'file') {
 492                         // check if it misses file references
 493                         if(!$skip_ims_validation && (!isset($attrs['href']) || $attrs['href']=='')){
 494                                 //$msg->addError('MANIFEST_NOT_WELLFORM');
 495                                 $msg->addError(array('IMPORT_CARTRIDGE_FAILED', _AT('ims_missing_references')));
 496                         }
 497
 498                         // special case for webCT content packages that don't specify the `href` attribute
 499                         // with the `<resource>` element.
 500                         // we take the `href` from the first `<file>` element.
 501                         if (isset($items[$current_identifier]) && ($items[$current_identifier]['href'] == '')) {
 502                                 $attrs['href'] = urldecode($attrs['href']);
 503                                 $items[$current_identifier]['href'] = $attrs['href'];
 504                         }
 505                         if ($temp_path['extension'] == 'html') {
 506                                 //$temp_path = pathinfo($attrs['href']);
 507                                         $temp_path = explode('/', $temp_path['dirname']);
 508                                 if (empty($package_base_path)){
 509                                         $package_base_path = $temp_path;
 510                 }
 511                                 if ($all_package_base_path!='' && empty($all_package_base_path)){
 512                                         $all_package_base_path = $temp_path;
 513                                 }
 514                                 $package_base_path = array_intersect_assoc($package_base_path, $temp_path);
 515                         }
 516                         //calculate the depths of relative paths
 517                         if ($all_package_base_path!=''){
 518                                 $no_relative_temp_path = $temp_path;
 519                                 foreach($no_relative_temp_path as $path_node){
 520                                         if ($path_node=='..'){
 521                                                 array_pop($no_relative_temp_path);
 522                                                 array_pop($no_relative_temp_path); //not a typo, have to pop twice, both itself('..'), and the one before.
 523                                         }
 524                                 }
 525                                 $all_package_base_path = array_intersect_assoc($all_package_base_path, $no_relative_temp_path);
 526                                 if (empty($all_package_base_path)){
 527                                         $all_package_base_path = '';    //unset it, there is no intersection.
 528                                 }
 529                         }
 530
 531                         //save the actual content base path
 532                         if (in_array('..', $temp_path)){
 533                                 $sizeofrp = array_count_values($temp_path);
 534                         }
 535
 536                         //for IMSCC, assume that all resources lies in the same folder, except styles.css
 537                         if ($items[$current_identifier]['type']=='webcontent' || $items[$current_identifier]['type']=='imsdt_xmlv1p0'){
 538                                 //find the intersection of each item's related files, then that intersection is the content_path
 539                                 if (isset($items[$current_identifier]['file'])){
 540                                         foreach ($items[$current_identifier]['file'] as $resource_path){
 541                                             if (!strpos($resource_path, 'Share')) {
 542                                                     $temp_path = pathinfo($resource_path);
 543                                                     $temp_path = explode('/', $temp_path['dirname']);
 544                                                     $package_base_path = array_intersect_assoc($package_base_path, $temp_path);
 545                                             }
 546                                         }
 547                                 }
 548                         }
 549
 550                         //real content path
 551                         if($sizeofrp['..'] > 0 && !empty($all_package_base_path)){
 552                                 for ($i=0; $i<$sizeofrp['..']; $i++){
 553                                         array_pop($all_package_base_path);
 554                                 }
 555                         }
 556                         //if (count($package_base_path) > 0) {
 557                         if (!empty($package_base_path)) {
 558                                 $items[$current_identifier]['new_path'] = implode('/', $package_base_path);
 559                         }
 560
 561                         if (isset($_POST['allow_test_import']) && isset($items[$current_identifier])
 562                                                 && preg_match('/((.*)\/)*tests\_[0-9]+\.xml$/', $attrs['href'])) {
 563                                 $items[$current_identifier]['tests'][] = $attrs['href'];
 564                         }
 565                         if (isset($_POST['allow_a4a_import']) && isset($items[$current_identifier])) {
 566                                 $items[$current_identifier]['a4a_import_enabled'] = true;
 567                         }
 568                 } else if (($name == 'item') && ($attrs['identifierref'] != '')) {
 569                         $path[] = $attrs['identifierref'];
 570                 } else if (($name == 'item') && ($attrs['identifier'])) {
 571                         $path[] = $attrs['identifier'];
 572
 573                 } else if (($name == 'resource')) {
 574                         $current_identifier = $attrs['identifier'];
 575                         $items[$current_identifier]['type'] = $attrs['type'];
 576                         if ($attrs['href']) {
 577                                 $attrs['href'] = urldecode($attrs['href']);
 578
 579                                 $items[$attrs['identifier']]['href'] = $attrs['href'];
 580
 581                                 // href points to a remote url
 582                                 if (preg_match('/^http.*:\/\//', trim($attrs['href'])))
 583                                         $items[$attrs['identifier']]['new_path'] = '';
 584                                 else // href points to local file
 585                                 {
 586                                         $temp_path = pathinfo($attrs['href']);
 587                                         $temp_path = explode('/', $temp_path['dirname']);
 588                                         $package_base_path = $temp_path;
 589
 590                                         $items[$attrs['identifier']]['new_path'] = implode('/', $temp_path);
 591                                 }
 592                         }
 593
 594
 595                 } else if ($name=='dependency' && $attrs['identifierref']!='') {
 596                         //if there is a dependency, attach it to the item array['file']
 597                         $items[$current_identifier]['dependency'][] = $attrs['identifierref'];
 598                 }
 599                 if (($name == 'item') && ($attrs['parameters'] != '')) {
 600                         $items[$attrs['identifierref']]['test_message'] = $attrs['parameters'];
 601                 }
 602                 if ($name=='file'){
 603                         if(!isset($items[$current_identifier]) && $attrs['href']!=''){
 604                                 $items[$current_identifier]['href']      = $attrs['href'];
 605                         }
 606                         if (substr($attrs['href'], 0, 7) == 'http://' || substr($attrs['href'], 0, 8) == 'https://' || file_exists($import_path.$attrs['href']) || $skip_ims_validation){
 607                                 $items[$current_identifier]['file'][] = $attrs['href'];
 608                         } else {
 609                                 //$msg->addError('');
 610                                 $msg->addError(array('IMPORT_CARTRIDGE_FAILED', _AT(array('ims_files_missing', $attrs['href']))));
 611                         }
 612                 }
 613                 if ($name=='cc:authorizations'){
 614                         //don't have authorization setup.
 615                         //$msg->addError('');
 616                         $msg->addError('IMS_AUTHORIZATION_NOT_SUPPORT');
 617                 }
 618                 array_push($element_path, $name);
 619         }
 620
 621         /* called when an element ends */
 622         /* removed the current element from the $path */
 623         function endElement($parser, $name) {
 624                 global $path, $element_path, $my_data, $items, $oauth_import;
 625                 global $current_identifier, $skip_ims_validation;
 626                 global $msg, $content_type;
 627                 global $course_title, $course_description, $course_primary_lang;  // added by Cindy Li
 628                 static $resource_num = 0;
 629
 630                 if ($name == 'item') {
 631                         array_pop($path);
 632                 }
 633
 634                 // added by Cindy Li on Jan 10, 2010
 635                 // Extract course title, description and primary language for a newly-created course
 636                 if (substr($element_path[count($element_path)-2], -6) == ':title') {
 637                         if (substr($element_path[count($element_path)-1], -7) == ':string' ||
 638                             substr($element_path[count($element_path)-1], -11) == ':langstring') {
 639                                 $course_title = trim($my_data);
 640                         }
 641                 }
 642
 643                 if (substr($element_path[count($element_path)-2], -12) == ':description') {
 644                         if (substr($element_path[count($element_path)-1], -7) == ':string' ||
 645                             substr($element_path[count($element_path)-1], -11) == ':langstring') {
 646                                 $course_description = trim($my_data);
 647                         }
 648                 }
 649
 650                 // get language from COMMON CARTRIDGE
 651
 652                 if (substr($element_path[count($element_path)-1], -9) == ':language') {
 653                         $course_primary_lang = trim($my_data);
 654
 655                 }
 656                 // end of added by Cindy Li on Jan 10, 2010
 657
 658                 //check if this is a test import
 659                 if ($name == 'schema'){
 660                         if (trim($my_data)=='IMS Question and Test Interoperability'){
 661                                 if ($oauth_import) {
 662                                         echo "error=".urlencode('A test import');
 663                                 } else {
 664                                         $msg->addError('IMPORT_FAILED');
 665                                 }
 666                         }
 667                         $content_type = trim($my_data);
 668                 }
 669
 670                 //Handles A4a
 671                 if ($current_identifier != ''){
 672                         $my_data = trim($my_data);
 673                         $last_file_name = $items[$current_identifier]['file'][(sizeof($items[$current_identifier]['file']))-1];
 674
 675                         if ($name=='originalAccessMode'){
 676                                 if (in_array('accessModeStatement', $element_path)){
 677                                         $items[$current_identifier]['a4a'][$last_file_name][$resource_num]['access_stmt_originalAccessMode'][] = $my_data;
 678                                 } elseif (in_array('adaptationStatement', $element_path)){
 679                                         $items[$current_identifier]['a4a'][$last_file_name][$resource_num]['adapt_stmt_originalAccessMode'][] = $my_data;
 680                                 }
 681                         } elseif (($name=='language') && in_array('accessModeStatement', $element_path)){
 682                                 $items[$current_identifier]['a4a'][$last_file_name][$resource_num]['language'][] = $my_data;
 683                         } elseif ($name=='hasAdaptation') {
 684                                 $items[$current_identifier]['a4a'][$last_file_name][$resource_num]['hasAdaptation'][] = $my_data;
 685                         } elseif ($name=='isAdaptationOf'){
 686                                 $items[$current_identifier]['a4a'][$last_file_name][$resource_num]['isAdaptationOf'][] = $my_data;
 687                         } elseif ($name=='accessForAllResource'){
 688                                 /* the head node of accessForAll Metadata, if this exists in the manifest. Skip XSD validation,
 689                                  * because A4a doesn't have a xsd yet.  Our access for all is based on ISO which will not pass
 690                                  * the current IMS validation.
 691                                  * Also, since ATutor is the only one (as of Oct 21, 2009) that exports IMS with access for all
 692                                  * content, we can almost assume that any ims access for all content is by us, and is valid.
 693                                  */
 694                                 $skip_ims_validation = true;
 695                                 $resource_num++;
 696                         } elseif($name=='file'){
 697                                 $resource_num = 0;      //reset resournce number to 0 when the file tags ends
 698                         }
 699                 }
 700
 701                 if ($element_path === array('manifest', 'metadata', 'imsmd:lom', 'imsmd:general', 'imsmd:title', 'imsmd:langstring')) {
 702                         global $package_base_name;
 703                         $package_base_name = trim($my_data);
 704                 }
 705
 706                 array_pop($element_path);
 707                 $my_data = '';
 708         }
 709
 710         /* called when there is character data within elements */
 711         /* constructs the $items array using the last entry in $path as the parent element */
 712         function characterData($parser, $data){
 713                 global $path, $items, $order, $my_data, $element_path;
 714                 global $current_identifier;
 715
 716                 $str_trimmed_data = trim($data);
 717
 718                 if (!empty($str_trimmed_data)) {
 719                         $size = count($path);
 720                         if ($size > 0) {
 721                                 $current_item_id = $path[$size-1];
 722                                 if ($size > 1) {
 723                                         $parent_item_id = $path[$size-2];
 724                                 } else {
 725                                         $parent_item_id = 0;
 726                                 }
 727
 728                                 if (isset($items[$current_item_id]['parent_content_id']) && is_array($items[$current_item_id])) {
 729
 730                                         /* this item already exists, append the title           */
 731                                         /* this fixes {\n, \t, `, &} characters in elements */
 732
 733                                         /* horible kludge to fix the <ns2:objectiveDesc xmlns:ns2="http://www.utoronto.ca/atrc/tile/xsd/tile_objective"> */
 734                                         /* from TILE */
 735                                         if (in_array('accessForAllResource', $element_path)){
 736                                                 //skip this tag
 737                                         } elseif ($element_path[count($element_path)-1] != 'ns1:objectiveDesc') {
 738                                                 $items[$current_item_id]['title'] .= $data;
 739                                         }
 740
 741                                 } else {
 742                                         $order[$parent_item_id] ++;
 743                                         $item_tmpl = array(     'title'                         => $data,
 744                                                                                 'parent_content_id' => $parent_item_id,
 745                                                                                 'ordering'                      => $order[$parent_item_id]-1);
 746                                         //append other array values if it exists
 747                                         if (is_array($items[$current_item_id])){
 748                                                 $items[$current_item_id] = array_merge($items[$current_item_id], $item_tmpl);
 749                                         } else {
 750                                                 $items[$current_item_id] = $item_tmpl;
 751                                         }
 752                                 }
 753                         }
 754                 }
 755
 756                 $my_data .= $data;
 757         }
 758
 759         /* glossary parser: */
 760         function glossaryStartElement($parser, $name, $attrs) {
 761                 global $element_path;
 762
 763                 array_push($element_path, $name);
 764         }
 765
 766         /* called when an element ends */
 767         /* removed the current element from the $path */
 768         function glossaryEndElement($parser, $name) {
 769                 global $element_path, $my_data, $imported_glossary;
 770                 static $current_term;
 771
 772                 if ($element_path === array('glossary', 'item', 'term') ||
 773                         $element_path === array('glossary:glossary', 'item', 'term')) {
 774                         $current_term = $my_data;
 775
 776                 } else if ($element_path === array('glossary', 'item', 'definition') ||
 777                                    $element_path === array('glossary:glossary', 'item', 'definition')) {
 778                         $imported_glossary[trim($current_term)] = trim($my_data);
 779                 }
 780
 781                 array_pop($element_path);
 782                 $my_data = '';
 783         }
 784
 785         function glossaryCharacterData($parser, $data){
 786                 global $my_data;
 787
 788                 $my_data .= $data;
 789         }
 790
 791 if (!isset($_POST['submit']) && !isset($_POST['cancel']) && !isset($_GET['oauth_token'])) {
 792         /* just a catch all */
 793         $msg->addError('NO_PRIV');
 794         header('Location: '.$_SERVER['HTTP_REFERER']);
 795         exit;
 796 } else if (isset($_POST['cancel'])) {
 797         $msg->addFeedback('IMPORT_CANCELLED');
 798
 799         header('Location: '.$_SERVER['HTTP_REFERER']);
 800         exit;
 801 }
 802
 803 $cid = intval($_POST['cid']);
 804
 805 //If user chooses to ignore validation.
 806 if(isset($_POST['ignore_validation']) && $_POST['ignore_validation']==1) {
 807         $skip_ims_validation = true;
 808 }
 809
 810 if (isset($_REQUEST['url']) && ($_REQUEST['url'] != 'http://') ) {
 811         if ($content = @file_get_contents($_REQUEST['url'])) {
 812                 $filename = substr(time(), -6). '.zip';
 813                 $full_filename = TR_CONTENT_DIR . $filename;
 814
 815                 if (!$fp = fopen($full_filename, 'w+b')) {
 816                         echo "Cannot open file ($filename)";
 817                         exit;
 818                 }
 819
 820                 if (fwrite($fp, $content, strlen($content) ) === FALSE) {
 821                         echo "Cannot write to file ($filename)";
 822                         exit;
 823                 }
 824                 fclose($fp);
 825         }
 826         $_FILES['file']['name']     = $filename;
 827         $_FILES['file']['tmp_name'] = $full_filename;
 828         $_FILES['file']['size']     = strlen($content);
 829         unset($content);
 830 //      $url_parts = pathinfo($_REQUEST['url']);
 831 //      $package_base_name_url = $url_parts['basename'];
 832     $package_base_name_url = md5(time());
 833 }
 834 $ext = pathinfo($_FILES['file']['name']);
 835 $ext = $ext['extension'];
 836
 837 if ($ext != 'zip') {
 838         $msg->addError('IMPORTDIR_IMS_NOTVALID');
 839 } else if ($_FILES['file']['error'] == 1) {
 840         $errors = array('FILE_MAX_SIZE', ini_get('upload_max_filesize'));
 841         $msg->addError($errors);
 842 } else if ( !$_FILES['file']['name'] || (!is_uploaded_file($_FILES['file']['tmp_name']) && !$_REQUEST['url'])) {
 843         $msg->addError('FILE_NOT_SELECTED');
 844 } else if ($_FILES['file']['size'] == 0) {
 845         $msg->addError('IMPORTFILE_EMPTY');
 846 }
 847 $msg->printAll();
 848 if ($msg->containsErrors()) {
 849         if (isset($_GET['tile'])) {
 850                 header('Location: '.$_base_path.'tools/tile/index.php');
 851         } else if ($oauth_import) {
 852                 echo "error=".urlencode('Invalid imported file');
 853         } else {
 854                 header('Location: '.$_SERVER['HTTP_REFERER']);
 855         }
 856         if (file_exists($full_filename)) @unlink($full_filename);
 857         exit;
 858 }
 859
 860 /* check if ../content/import/ exists */
 861 $import_path = TR_CONTENT_DIR . 'import/';
 862 $content_path = TR_CONTENT_DIR;
 863
 864 if (!is_dir($import_path)) {
 865         if (!@mkdir($import_path, 0700)) {
 866                 $msg->addError('IMPORTDIR_FAILED');
 867         }
 868 }
 869
 870 if (isset($_POST['_course_id'])) $import_path .= $_POST['_course_id'].'/';
 871 else $import_path .= Utility::getRandomStr(16).'/';
 872
 873 if (is_dir($import_path)) {
 874         FileUtility::clr_dir($import_path);
 875 }
 876
 877 if (!@mkdir($import_path, 0700)) {
 878         $msg->addError('IMPORTDIR_FAILED');
 879 }
 880
 881 if ($msg->containsErrors()) {
 882         if (isset($_GET['tile'])) {
 883                 header('Location: '.$_base_path.'tools/tile/index.php');
 884         } else if ($oauth_import) {
 885                 echo "error=".urlencode('Cannot create import directory');
 886         } else {
 887                 header('Location: '.$_SERVER['HTTP_REFERER']);
 888         }
 889         if (file_exists($full_filename)) @unlink($full_filename);
 890         exit;
 891 }
 892
 893 /* extract the entire archive into TR_COURSE_CONTENT . import/$course using the call back function to filter out php files */
 894 error_reporting(0);
 895 $archive = new PclZip($_FILES['file']['tmp_name']);
 896
 897 if ($archive->extract(  PCLZIP_OPT_PATH,        $import_path,
 898                                                 PCLZIP_CB_PRE_EXTRACT,  'preImportCallBack') == 0) {
 899         if ($oauth_import) {
 900                 echo "error=".urlencode('Cannot unzip the package');
 901         } else {
 902                 $msg->addError('IMPORT_FAILED');
 903                 echo 'Error : '.$archive->errorInfo(true);
 904         }
 905         FileUtility::clr_dir($import_path);
 906         header('Location: '.$_SERVER['HTTP_REFERER']);
 907         if (file_exists($full_filename)) @unlink($full_filename);
 908         exit;
 909 }
 910
 911
 912 /* initialize DAO objects */
 913 $coursesDAO = new CoursesDAO();
 914 $contentDAO = new ContentDAO();
 915 $testsQuestionsAssocDAO = new TestsQuestionsAssocDAO();
 916 $contentTestsAssocDAO = new ContentTestsAssocDAO();
 917
 918 // get the course's max_quota
 919 if (isset($_POST['_course_id']))
 920 {
 921         check_available_size($_POST['_course_id']);
 922 }
 923
 924 $items = array(); /* all the content pages */
 925 $order = array(); /* keeps track of the ordering for each content page */
 926 $path  = array();  /* the hierarchy path taken in the menu to get to the current item in the manifest */
 927 $dependency_files = array(); /* the file path for the dependency files */
 928
 929 /*
 930 $items[content_id/resource_id] = array(
 931                                                                         'title'
 932                                                                         'real_content_id' // calculated after being inserted
 933                                                                         'parent_content_id'
 934                                                                         'href'
 935                                                                         'ordering'
 936                                                                         );
 937 */
 938 $ims_manifest_xml = @file_get_contents($import_path.'imsmanifest.xml');
 939
 940 //scan for manifest xml if it's not on the top level.
 941 if ($ims_manifest_xml === false){
 942         $data = rscandir($import_path);
 943         $manifest_array = array();
 944         foreach($data as $scanned_file){
 945                 $scanned_file = realpath($scanned_file);
 946                 //change the file string to an array
 947                 $this_file_array = explode(DIRECTORY_SEPARATOR, $scanned_file);
 948                 if(empty($manifest_array)){
 949                         $manifest_array = $this_file_array;
 950                 }
 951                 $manifest_array = array_intersect_assoc($this_file_array, $manifest_array);
 952
 953                 if (strpos($scanned_file, 'imsmanifest')!==false){
 954                         $ims_manifest_xml = @file_get_contents($scanned_file);
 955                 }
 956         }
 957         if ($ims_manifest_xml !== false){
 958                 $import_path = implode(DIRECTORY_SEPARATOR, $manifest_array) . DIRECTORY_SEPARATOR;
 959         }
 960 }
 961
 962 //if no imsmanifest.xml found in the entire package, throw error.
 963 if ($ims_manifest_xml === false) {
 964         $msg->addError('NO_IMSMANIFEST');
 965
 966         if (file_exists($import_path . 'atutor_backup_version')) {
 967                 $msg->addError('NO_IMS_BACKUP');
 968         }
 969         FileUtility::clr_dir($import_path);
 970
 971         if (isset($_GET['tile'])) {
 972                 header('Location: '.$_base_path.'tools/tile/index.php');
 973         } else if ($oauth_import) {
 974                 echo "error=".urlencode('IMS manifest file does not appear to be valid');
 975         } else {
 976                 header('Location: '.$_SERVER['HTTP_REFERER']);
 977         }
 978         if (file_exists($full_filename)) @unlink($full_filename);
 979         exit;
 980 }
 981
 982 $xml_parser = xml_parser_create();
 983
 984 xml_parser_set_option($xml_parser, XML_OPTION_CASE_FOLDING, false); /* conform to W3C specs */
 985 xml_set_element_handler($xml_parser, 'startElement', 'endElement');
 986 xml_set_character_data_handler($xml_parser, 'characterData');
 987
 988 if (!xml_parse($xml_parser, $ims_manifest_xml, true)) {
 989         die(sprintf("XML error: %s at line %d",
 990                                 xml_error_string(xml_get_error_code($xml_parser)),
 991                                 xml_get_current_line_number($xml_parser)));
 992 }
 993 xml_parser_free($xml_parser);
 994
 995 // Check if all the files exists in the manifest, iff it's a IMS CC package.
 996 if ($content_type == 'IMS Common Cartridge') {
 997         checkResources($import_path);
 998 }
 999
1000 // Check if there are any errors during parsing.
1001 if ($msg->containsErrors()) {
1002         if (isset($_GET['tile'])) {
1003                 header('Location: '.$_base_path.'tools/tile/index.php');
1004         } else if ($oauth_import) {
1005                 echo "error=".urlencode('Error at parsing IMS manifest file');
1006         } else {
1007                 header('Location: '.$_SERVER['HTTP_REFERER']);
1008         }
1009         if (file_exists($full_filename)) @unlink($full_filename);
1010         exit;
1011 }
1012
1013 // added by Cindy Li on Jan 10, 2010
1014 // generate a course_id if the import is not into an existing course
1015 if (!isset($_POST['_course_id']))
1016 {
1017         if (isset($_POST['hide_course']))
1018                 $access = 'private';
1019         else
1020                 $access = 'public';
1021
1022         if (isset($course_primary_lang) && $course_primary_lang != '')
1023         {
1024                 $langcode_and_charset = explode('-', $course_primary_lang);
1025 //              $course_primary_lang = Utility::get3LetterLangCode($langcode_and_charset[0]);
1026                 $course_primary_lang = $langcode_and_charset[0];
1027         }else{
1028                 $course_primary_lang = DEFAULT_LANGUAGE_CODE;
1029         }
1030         $_course_id = $coursesDAO->Create($_SESSION['user_id'], 'top', $access, $course_title, $course_description,
1031                      '', '', '', '', $course_primary_lang, '', '');
1032
1033         check_available_size($_course_id);
1034
1035         // insert author role into table "user_courses"
1036         $userCoursesDAO = new UserCoursesDAO();
1037         $userCoursesDAO->Create($_SESSION['user_id'], $_course_id, TR_USERROLE_AUTHOR, 0);
1038 }
1039 else $_course_id = $_POST['_course_id'];
1040
1041 // end of added by Cindy Li on Jan 10, 2010
1042
1043 /* generate a unique new package base path based on the package file name and date as needed. */
1044 /* the package name will be the dir where the content for this package will be put, as a result */
1045 /* the 'content_path' field in the content table will be set to this path. */
1046 /* $package_base_name_url comes from the URL file name (NOT the file name of the actual file we open)*/
1047 if (!$package_base_name && $package_base_name_url) {
1048         $package_base_name = substr($package_base_name_url, -6);
1049 } else if (!$package_base_name) {
1050         $package_base_name = substr($_FILES['file']['name'], 0, -4);
1051 }
1052
1053 $package_base_name = strtolower($package_base_name);
1054 $package_base_name = str_replace(array('\'', '"', ' ', '|', '\\', '/', '<', '>', ':'), '_' , $package_base_name);
1055 $package_base_name = preg_replace("/[^A-Za-z0-9._\-]/", '', $package_base_name);
1056
1057 $course_dir = TR_CONTENT_DIR.$_course_id.'/';
1058
1059 if (is_dir($course_dir.$package_base_name)) {
1060         $package_base_name .= '_'.date('ymdHis');
1061 }
1062
1063 if ($package_base_path) {
1064         $package_base_path = implode('/', $package_base_path);
1065 } elseif (empty($package_base_path)){
1066         $package_base_path = '';
1067 }
1068
1069 if ($xml_base_path) {
1070         $package_base_path = $xml_base_path . $package_base_path;
1071
1072         mkdir($import_path.$xml_base_path);
1073         $package_base_name = $xml_base_path . $package_base_name;
1074 }
1075
1076 /* get the top level content ordering offset */
1077 $order_offset = $contentDAO->getMaxOrdering($_course_id, 0);
1078 $lti_offset = array();  //since we don't need lti tools, the ordering needs to be subtracted
1079
1080 //reorder the items stack
1081 $common_path = removeCommonPath($items);
1082 $items = rehash($items);
1083 //debug($items);exit;
1084 foreach ($items as $item_id => $content_info)
1085 {
1086         //formatting field, default 1
1087         $content_formatting = 1;        //CONTENT_TYPE_CONTENT
1088
1089         //don't want to display glossary as a page
1090         if ($content_info['href']== $glossary_path . 'glossary.xml'){
1091                 continue;
1092         }
1093
1094         //if discussion tools, add it to the list of unhandled dts
1095         if ($content_info['type']=='imsdt_xmlv1p0'){
1096                 //if it will be taken care after (has dependency), then move along.
1097                 if (in_array($item_id, $avail_dt)){
1098                         $lti_offset[$content_info['parent_content_id']]++;
1099                         continue;
1100                 }
1101         }
1102
1103         //handle the special case of cc import, where there is no content association. The resource should
1104         //still be imported.
1105         if(!isset($content_info['parent_content_id'])){
1106                 //if this is a question bank
1107                 if ($content_info['type']=="imsqti_xmlv1p2/imscc_xmlv1p0/question-bank"){
1108                         addQuestions($content_info['href'], $content_info, $import_path);
1109                 }
1110         }
1111
1112         //if it has no title, most likely it is not a page but just a normal item, skip it
1113         if (!isset($content_info['title'])){
1114                 continue;
1115         }
1116
1117         //check dependency immediately, then handles it
1118         $head = '';
1119         if (is_array($content_info['dependency']) && !empty($content_info['dependency'])){
1120                 foreach($content_info['dependency'] as $dependency_ref){
1121                         //check if this is a discussion tool dependency
1122                         if ($items[$dependency_ref]['type']=='imsdt_xmlv1p0'){
1123                                 $items[$item_id]['forum'][$dependency_ref] = $items[$dependency_ref]['href'];
1124                         }
1125                         //check if this is a QTI dependency
1126                         if (strpos($items[$dependency_ref]['type'], 'imsqti_xmlv1p2/imscc_xmlv1p0') !== false){
1127                                 $items[$item_id]['tests'][$dependency_ref] = $items[$dependency_ref]['href'];
1128                         }
1129                 }
1130         }
1131
1132
1133         // remote href
1134         if (preg_match('/^http.*:\/\//', trim($content_info['href'])) )
1135         {
1136                 $content = '<a href="'.$content_info['href'].'" target="_blank">'.$content_info['title'].'</a>';
1137         }
1138         else
1139         {
1140                 if ($content_type == 'IMS Common Cartridge'){
1141                         //to handle import with purely images but nothing else
1142                         //don't need a content base path for it.
1143                         $content_new_path = $content_info['new_path'];
1144                         $content_info['new_path'] = '';
1145                 }
1146                 if (isset($content_info['href'], $xml_base_path)) {
1147                         $content_info['href'] = $xml_base_path . $content_info['href'];
1148                 }
1149                 if (!isset($content_info['href'])) {
1150                         // this item doesn't have an identifierref. so create an empty page.
1151                         // what we called a folder according to v1.2 Content Packaging spec
1152                         // Hop over
1153                         $content = '';
1154                         $ext = '';
1155                         $last_modified = date('Y-m-d H:i:s');
1156                 } else {
1157                         //$file_info = @stat(TR_CONTENT_DIR . 'import/'.$_POST['_course_id'].'/'.$content_info['href']);
1158                         $file_info = @stat($import_path.$content_info['href']);
1159                         if ($file_info === false) {
1160                                 continue;
1161                         }
1162
1163                         //$path_parts = pathinfo(TR_CONTENT_DIR . 'import/'.$_POST['_course_id'].'/'.$content_info['href']);
1164                         $path_parts = pathinfo($import_path.$content_info['href']);
1165                         $ext = strtolower($path_parts['extension']);
1166
1167                         $last_modified = date('Y-m-d H:i:s', $file_info['mtime']);
1168                 }
1169                 if (in_array($ext, array('gif', 'jpg', 'bmp', 'png', 'jpeg'))) {
1170                         /* this is an image */
1171                         $content = '<img src="'.$content_info['href'].'" alt="'.$content_info['title'].'" />';
1172                 } else if ($ext == 'swf') {
1173                         /* this is flash */
1174             /* Using default size of 550 x 400 */
1175
1176                         $content = '<object type="application/x-shockwave-flash" data="' . $content_info['href'] . '" width="550" height="400"><param name="movie" value="'. $content_info['href'] .'" /></object>';
1177
1178                 } else if ($ext == 'mov') {
1179                         /* this is a quicktime movie  */
1180             /* Using default size of 550 x 400 */
1181
1182                         $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="' . $content_info['href'] .'" width="550" height="400" controller="true" pluginspage="http://www.apple.com/quicktime/download/"></embed></object>';
1183
1184                 } else if ($ext == 'mp3') {
1185                         $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="' . $content_info['href'] .'" width="200" height="15" autoplay="false" pluginspage="http://www.apple.com/quicktime/download/"></embed></object>';
1186                 } else if (in_array($ext, array('wav', 'au'))) {
1187                         $content = '<embed SRC="'.$content_info['href'].'" autostart="false" width="145" height="60"><noembed><bgsound src="'.$content_info['href'].'"></noembed></embed>';
1188
1189                 } else if (in_array($ext, array('txt', 'css', 'html', 'htm', 'csv', 'asc', 'tsv', 'xml', 'xsl'))) {
1190                         if ($content_type == 'IMS Common Cartridge'){
1191                                 $content_info['new_path'] = $content_new_path;
1192                         }
1193
1194                         /* this is a plain text file */
1195
1196                         $content = file_get_contents($import_path.$content_info['href']);
1197                         if ($content === false) {
1198                                 /* if we can't stat() it then we're unlikely to be able to read it */
1199                                 /* so we'll never get here. */
1200                                 continue;
1201                         }
1202
1203                         // get the contents of the 'head' element
1204                         $head .= ContentUtility::getHtmlHeadByTag($content, $html_head_tags);
1205
1206                         // Specifically handle eXe package
1207                         // NOTE: THIS NEEDS WORK! TO FIND A WAY APPLY EXE .CSS FILES ONLY ON COURSE CONTENT PART.
1208                         // NOW USE OUR OWN .CSS CREATED SOLELY FOR EXE
1209                         $isExeContent = false;
1210
1211                         // check xml file in eXe package
1212                         if (preg_match("/<organization[ ]*identifier=\"eXe*>*/", $ims_manifest_xml))
1213                         {
1214                                 $isExeContent = true;
1215                         }
1216
1217                         // use ATutor's eXe style sheet as the ones from eXe conflicts with ATutor's style sheets
1218                         if ($isExeContent)
1219                         {
1220                                 $head = preg_replace ('/(<style.*>)(.*)(<\/style>)/ms', '\\1@import url(/docs/exestyles.css);\\3', $head);
1221                         }
1222
1223                         // end of specifically handle eXe package
1224
1225                         $content = ContentUtility::getHtmlBody($content);
1226                         if ($contains_glossary_terms)
1227                         {
1228                                 // replace glossary content package links to real glossary mark-up using [?] [/?]
1229                                 // refer to bug 3641, edited by Harris
1230                                 $content = preg_replace('/<a href="([.\w\d\s]+[^"]+)" target="body" class="at-term">([.\w\d\s&;"]+|.*)<\/a>/i', '[?]\\2[/?]', $content);
1231                         }
1232
1233                         /* potential security risk? */
1234                         if ( strpos($content_info['href'], '..') === false && !preg_match('/((.*)\/)*tests\_[0-9]+\.xml$/', $content_info['href'])) {
1235 //                              @unlink(TR_CONTENT_DIR . 'import/'.$_POST['_course_id'].'/'.$content_info['href']);
1236                         }
1237
1238                         // overwrite content if this is discussion tool.
1239                         if ($content_info['type']=='imsdt_xmlv1p0'){
1240                                 $dt_parser = new DiscussionToolsParser();
1241                                 $xml_content = @file_get_contents($import_path . $content_info['href']);
1242                                 $dt_parser->parse($xml_content);
1243                                 $forum_obj = $dt_parser->getDt();
1244                                 $content = $forum_obj->getText();
1245                                 unset($forum_obj);
1246                                 $dt_parser->close();
1247                         }
1248                 } else if ($ext) {
1249                         /* non text file, and can't embed (example: PDF files) */
1250                         $content = '<a href="'.$content_info['href'].'">'.$content_info['title'].'</a>';
1251                 }
1252         }
1253         $content_parent_id = $cid;
1254         if ($content_info['parent_content_id'] !== 0) {
1255                 $content_parent_id = $items[$content_info['parent_content_id']]['real_content_id'];
1256                 //if it's not there, use $cid
1257                 if (!$content_parent_id){
1258                         $content_parent_id = $cid;
1259                 }
1260         }
1261
1262         $my_offset = 0;
1263         if ($content_parent_id == $cid) {
1264                 $my_offset = $order_offset;
1265         }
1266
1267         /* replace the old path greatest common denomiator with the new package path. */
1268         /* we don't use str_replace, b/c there's no knowing what the paths may be         */
1269         /* we only want to replace the first part of the path.
1270         */
1271         if(is_array($all_package_base_path)){
1272                 $all_package_base_path = implode('/', $all_package_base_path);
1273         }
1274
1275
1276         if ($common_path != ''
1277           && ($content_info['new_path'] === $common_path
1278           || substr($content_info['new_path'], strlen($common_path)))) {
1279                 $content_info['new_path'] = $package_base_name . substr($content_info['new_path'], strlen($common_path));
1280         } else {
1281                 $content_info['new_path'] = $package_base_name . '/' . $content_info['new_path'];
1282         }
1283
1284         //handles weblinks
1285         if ($content_info['type']=='imswl_xmlv1p0'){
1286                 $weblinks_parser = new WeblinksParser();
1287                 $xml_content = @file_get_contents($import_path . $content_info['href']);
1288                 $weblinks_parser->parse($xml_content);
1289                 $content_info['title'] = $weblinks_parser->getTitle();
1290                 $content = $weblinks_parser->getUrl();
1291                 $content_folder_type = CONTENT_TYPE_WEBLINK;
1292                 $content_formatting = 2;
1293         }
1294
1295
1296         //if this file is a test_xml, create a blank page instead, for imscc.
1297         if (preg_match('/((.*)\/)*tests\_[0-9]+\.xml$/', $content_info['href'])
1298                 || preg_match('/imsqti\_(.*)/', $content_info['type'])) {
1299                 $content = ' ';
1300         }
1301
1302
1303         //check for content_type
1304         if ($content_formatting!=CONTENT_TYPE_WEBLINK){
1305                 $content_folder_type = (!isset($content_info['type'])?CONTENT_TYPE_FOLDER:CONTENT_TYPE_CONTENT);
1306         }
1307
1308         $items[$item_id]['real_content_id'] = $contentDAO->Create($_course_id, intval($content_parent_id),
1309                             ($content_info['ordering'] + $my_offset - $lti_offset[$content_info['parent_content_id']] + 1),
1310                             0, $content_formatting, "", $content_info['new_path'], $content_info['title'],
1311                             $content, $head, 1, $content_info['test_message'], $content_folder_type);
1312
1313
1314         /* get the tests associated with this content */
1315         if (!empty($items[$item_id]['tests']) || strpos($items[$item_id]['type'], 'imsqti_xmlv1p2/imscc_xmlv1p0') !== false){
1316                 $qti_import = new QTIImport($import_path);
1317                 if (isset($items[$item_id]['tests'])){
1318                         $loop_var = $items[$item_id]['tests'];
1319                 } else {
1320                         $loop_var = $items[$item_id]['file'];
1321                 }
1322
1323                 foreach ($loop_var as $array_id => $test_xml_file){
1324                         //check if this item is the qti item object, or it is the content item obj
1325                         //switch it to qti obj if it's content item obj
1326                         if ($items[$item_id]['type'] == 'webcontent'){
1327                                 $item_qti = $items[$array_id];
1328                         } else {
1329                                 $item_qti = $items[$item_id];
1330                         }
1331                         //call subrountine to add the questions.
1332                         $qids = addQuestions($test_xml_file, $item_qti, $import_path);
1333
1334                         //import test
1335                         if ($test_title==''){
1336                                 $test_title = $content_info['title'];
1337                         }
1338
1339                         $tid = $qti_import->importTest($test_title);
1340
1341                         //associate question and tests
1342                         foreach ($qids as $order=>$qid){
1343                                 if (isset($qti_import->weights[$order])){
1344                                         $weight = round($qti_import->weights[$order]);
1345                                 } else {
1346                                         $weight = 0;
1347                                 }
1348                                 $new_order = $order + 1;
1349                                 $testsQuestionsAssocDAO->Create($tid, $qid, $weight, $new_order);
1350
1351                         }
1352
1353                         //associate content and test
1354                         $contentTestsAssocDAO->Create($items[$item_id]['real_content_id'], $tid);
1355
1356
1357                 }
1358         }
1359
1360         /* get the a4a related xml */
1361         if (isset($items[$item_id]['a4a_import_enabled']) && isset($items[$item_id]['a4a']) && !empty($items[$item_id]['a4a'])) {
1362                 $a4a_import = new A4aImport($items[$item_id]['real_content_id']);
1363                 $a4a_import->setRelativePath($items[$item_id]['new_path']);
1364                 $a4a_import->importA4a($items[$item_id]['a4a']);
1365         }
1366
1367         // get the discussion tools (dependent to content)
1368         if (isset($items[$item_id]['forum']) && !empty($items[$item_id]['forum'])){
1369                 foreach($items[$item_id]['forum'] as $forum_ref => $forum_link){
1370                         $dt_parser = new DiscussionToolsParser();
1371                         $dt_import = new DiscussionToolsImport();
1372
1373                         //if this forum has not been added, parse it and add it.
1374                         if (!isset($added_dt[$forum_ref])){
1375                                 $xml_content = @file_get_contents($import_path . $forum_link);
1376                                 $dt_parser->parse($xml_content);
1377                                 $forum_obj = $dt_parser->getDt();
1378                                 $dt_import->import($forum_obj, $items[$item_id]['real_content_id'], $_course_id);
1379                                 $added_dt[$forum_ref] = $dt_import->getFid();
1380                         }
1381
1382                 }
1383         } elseif ($items[$item_id]['type']=='imsdt_xmlv1p0'){
1384                 //optimize this, repeated codes as above
1385                 $dt_parser = new DiscussionToolsParser();
1386                 $dt_import = new DiscussionToolsImport();
1387                 $xml_content = @file_get_contents($import_path . $content_info['href']);
1388                 $dt_parser->parse($xml_content);
1389                 $forum_obj = $dt_parser->getDt();
1390                 $dt_import->import($forum_obj, $items[$item_id]['real_content_id'], $_course_id);
1391                 $added_dt[$item_id] = $dt_import->getFid();
1392
1393         }
1394 }
1395
1396 //exit;//harris
1397 if ($package_base_path == '.') {
1398         $package_base_path = '';
1399 }
1400
1401 // create course directory
1402 if (!is_dir($course_dir)) {
1403         if (!@mkdir($course_dir, 0700)) {
1404                 $msg->addError('IMPORTDIR_FAILED');
1405         }
1406 }
1407
1408
1409
1410 //--- harris edit for path thing
1411 $file = $import_path.$common_path;
1412 if (is_dir($file)) {
1413     rename($file, TR_CONTENT_DIR.$_course_id.DIRECTORY_SEPARATOR.$package_base_name);
1414 }
1415 //--- end
1416 //takes care of the condition where the whole package doesn't have any contents but question banks
1417 //also is the case of urls
1418 if(is_array($all_package_base_path)){
1419         $all_package_base_path = implode('/', $all_package_base_path);
1420
1421         if(strpos($all_package_base_path, 'http:/')===false){
1422                 if (rename($import_path.$all_package_base_path, $course_dir.$package_base_name) === false) {
1423                 if (!$msg->containsErrors()) {
1424                                 if ($oauth_import) {
1425                                         echo "error=".urlencode('Cannot move lesson directory into content directory');
1426                                 } else {
1427                                         $msg->addError('IMPORT_FAILED');
1428                                 }
1429                 }
1430             }
1431         }
1432 }
1433
1434 FileUtility::clr_dir($import_path);
1435
1436 if (file_exists($full_filename)) @unlink($full_filename);
1437
1438 if ($oauth_import) {
1439         echo 'course_id='.$_course_id;
1440 } else {
1441         if (!$msg->containsErrors()) {
1442                 $msg->addFeedback('ACTION_COMPLETED_SUCCESSFULLY');
1443         }
1444         header('Location: ../course/index.php?_course_id='.$_course_id);
1445 }
1446 exit;
1447
1448 ?>