docs/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                                                 $temp_path = pathinfo($resource_path);
 542                                                 $temp_path = explode('/', $temp_path['dirname']);
 543                                                 $package_base_path = array_intersect_assoc($package_base_path, $temp_path);
 544                                         }
 545                                 }
 546                         }
 547
 548                         //real content path
 549                         if($sizeofrp['..'] > 0 && !empty($all_package_base_path)){
 550                                 for ($i=0; $i<$sizeofrp['..']; $i++){
 551                                         array_pop($all_package_base_path);
 552                                 }
 553                         }
 554                         //if (count($package_base_path) > 0) {
 555                         if (!empty($package_base_path)) {
 556                                 $items[$current_identifier]['new_path'] = implode('/', $package_base_path);
 557                         }
 558
 559                         if (isset($_POST['allow_test_import']) && isset($items[$current_identifier])
 560                                                 && preg_match('/((.*)\/)*tests\_[0-9]+\.xml$/', $attrs['href'])) {
 561                                 $items[$current_identifier]['tests'][] = $attrs['href'];
 562                         }
 563                         if (isset($_POST['allow_a4a_import']) && isset($items[$current_identifier])) {
 564                                 $items[$current_identifier]['a4a_import_enabled'] = true;
 565                         }
 566                 } else if (($name == 'item') && ($attrs['identifierref'] != '')) {
 567                         $path[] = $attrs['identifierref'];
 568                 } else if (($name == 'item') && ($attrs['identifier'])) {
 569                         $path[] = $attrs['identifier'];
 570
 571                 } else if (($name == 'resource')) {
 572                         $current_identifier = $attrs['identifier'];
 573                         $items[$current_identifier]['type'] = $attrs['type'];
 574                         if ($attrs['href']) {
 575                                 $attrs['href'] = urldecode($attrs['href']);
 576
 577                                 $items[$attrs['identifier']]['href'] = $attrs['href'];
 578
 579                                 // href points to a remote url
 580                                 if (preg_match('/^http.*:\/\//', trim($attrs['href'])))
 581                                         $items[$attrs['identifier']]['new_path'] = '';
 582                                 else // href points to local file
 583                                 {
 584                                         $temp_path = pathinfo($attrs['href']);
 585                                         $temp_path = explode('/', $temp_path['dirname']);
 586                                         $package_base_path = $temp_path;
 587
 588                                         $items[$attrs['identifier']]['new_path'] = implode('/', $temp_path);
 589                                 }
 590                         }
 591
 592
 593                 } else if ($name=='dependency' && $attrs['identifierref']!='') {
 594                         //if there is a dependency, attach it to the item array['file']
 595                         $items[$current_identifier]['dependency'][] = $attrs['identifierref'];
 596                 }
 597                 if (($name == 'item') && ($attrs['parameters'] != '')) {
 598                         $items[$attrs['identifierref']]['test_message'] = $attrs['parameters'];
 599                 }
 600                 if ($name=='file'){
 601                         if(!isset($items[$current_identifier]) && $attrs['href']!=''){
 602                                 $items[$current_identifier]['href']      = $attrs['href'];
 603                         }
 604                         if (substr($attrs['href'], 0, 7) == 'http://' || substr($attrs['href'], 0, 8) == 'https://' || file_exists($import_path.$attrs['href']) || $skip_ims_validation){
 605                                 $items[$current_identifier]['file'][] = $attrs['href'];
 606                         } else {
 607                                 //$msg->addError('');
 608                                 $msg->addError(array('IMPORT_CARTRIDGE_FAILED', _AT(array('ims_files_missing', $attrs['href']))));
 609                         }
 610                 }
 611                 if ($name=='cc:authorizations'){
 612                         //don't have authorization setup.
 613                         //$msg->addError('');
 614                         $msg->addError('IMS_AUTHORIZATION_NOT_SUPPORT');
 615                 }
 616                 array_push($element_path, $name);
 617         }
 618
 619         /* called when an element ends */
 620         /* removed the current element from the $path */
 621         function endElement($parser, $name) {
 622                 global $path, $element_path, $my_data, $items, $oauth_import;
 623                 global $current_identifier, $skip_ims_validation;
 624                 global $msg, $content_type;
 625                 global $course_title, $course_description, $course_primary_lang;  // added by Cindy Li
 626                 static $resource_num = 0;
 627
 628                 if ($name == 'item') {
 629                         array_pop($path);
 630                 }
 631
 632                 // added by Cindy Li on Jan 10, 2010
 633                 // Extract course title, description and primary language for a newly-created course
 634                 if (substr($element_path[count($element_path)-2], -6) == ':title') {
 635                         if (substr($element_path[count($element_path)-1], -7) == ':string' ||
 636                             substr($element_path[count($element_path)-1], -11) == ':langstring') {
 637                                 $course_title = trim($my_data);
 638                         }
 639                 }
 640
 641                 if (substr($element_path[count($element_path)-2], -12) == ':description') {
 642                         if (substr($element_path[count($element_path)-1], -7) == ':string' ||
 643                             substr($element_path[count($element_path)-1], -11) == ':langstring') {
 644                                 $course_description = trim($my_data);
 645                         }
 646                 }
 647
 648                 // get language from COMMON CARTRIDGE
 649                 if (substr($element_path[count($element_path)-1], -9) == ':language') {
 650                         $course_primary_lang = trim($my_data);
 651                 }
 652                 // end of added by Cindy Li on Jan 10, 2010
 653
 654                 //check if this is a test import
 655                 if ($name == 'schema'){
 656                         if (trim($my_data)=='IMS Question and Test Interoperability'){
 657                                 if ($oauth_import) {
 658                                         echo "error=".urlencode('A test import');
 659                                 } else {
 660                                         $msg->addError('IMPORT_FAILED');
 661                                 }
 662                         }
 663                         $content_type = trim($my_data);
 664                 }
 665
 666                 //Handles A4a
 667                 if ($current_identifier != ''){
 668                         $my_data = trim($my_data);
 669                         $last_file_name = $items[$current_identifier]['file'][(sizeof($items[$current_identifier]['file']))-1];
 670
 671                         if ($name=='originalAccessMode'){
 672                                 if (in_array('accessModeStatement', $element_path)){
 673                                         $items[$current_identifier]['a4a'][$last_file_name][$resource_num]['access_stmt_originalAccessMode'][] = $my_data;
 674                                 } elseif (in_array('adaptationStatement', $element_path)){
 675                                         $items[$current_identifier]['a4a'][$last_file_name][$resource_num]['adapt_stmt_originalAccessMode'][] = $my_data;
 676                                 }
 677                         } elseif (($name=='language') && in_array('accessModeStatement', $element_path)){
 678                                 $items[$current_identifier]['a4a'][$last_file_name][$resource_num]['language'][] = $my_data;
 679                         } elseif ($name=='hasAdaptation') {
 680                                 $items[$current_identifier]['a4a'][$last_file_name][$resource_num]['hasAdaptation'][] = $my_data;
 681                         } elseif ($name=='isAdaptationOf'){
 682                                 $items[$current_identifier]['a4a'][$last_file_name][$resource_num]['isAdaptationOf'][] = $my_data;
 683                         } elseif ($name=='accessForAllResource'){
 684                                 /* the head node of accessForAll Metadata, if this exists in the manifest. Skip XSD validation,
 685                                  * because A4a doesn't have a xsd yet.  Our access for all is based on ISO which will not pass
 686                                  * the current IMS validation.
 687                                  * Also, since ATutor is the only one (as of Oct 21, 2009) that exports IMS with access for all
 688                                  * content, we can almost assume that any ims access for all content is by us, and is valid.
 689                                  */
 690                                 $skip_ims_validation = true;
 691                                 $resource_num++;
 692                         } elseif($name=='file'){
 693                                 $resource_num = 0;      //reset resournce number to 0 when the file tags ends
 694                         }
 695                 }
 696
 697                 if ($element_path === array('manifest', 'metadata', 'imsmd:lom', 'imsmd:general', 'imsmd:title', 'imsmd:langstring')) {
 698                         global $package_base_name;
 699                         $package_base_name = trim($my_data);
 700                 }
 701
 702                 array_pop($element_path);
 703                 $my_data = '';
 704         }
 705
 706         /* called when there is character data within elements */
 707         /* constructs the $items array using the last entry in $path as the parent element */
 708         function characterData($parser, $data){
 709                 global $path, $items, $order, $my_data, $element_path;
 710                 global $current_identifier;
 711
 712                 $str_trimmed_data = trim($data);
 713
 714                 if (!empty($str_trimmed_data)) {
 715                         $size = count($path);
 716                         if ($size > 0) {
 717                                 $current_item_id = $path[$size-1];
 718                                 if ($size > 1) {
 719                                         $parent_item_id = $path[$size-2];
 720                                 } else {
 721                                         $parent_item_id = 0;
 722                                 }
 723
 724                                 if (isset($items[$current_item_id]['parent_content_id']) && is_array($items[$current_item_id])) {
 725
 726                                         /* this item already exists, append the title           */
 727                                         /* this fixes {\n, \t, `, &} characters in elements */
 728
 729                                         /* horible kludge to fix the <ns2:objectiveDesc xmlns:ns2="http://www.utoronto.ca/atrc/tile/xsd/tile_objective"> */
 730                                         /* from TILE */
 731                                         if (in_array('accessForAllResource', $element_path)){
 732                                                 //skip this tag
 733                                         } elseif ($element_path[count($element_path)-1] != 'ns1:objectiveDesc') {
 734                                                 $items[$current_item_id]['title'] .= $data;
 735                                         }
 736
 737                                 } else {
 738                                         $order[$parent_item_id] ++;
 739                                         $item_tmpl = array(     'title'                         => $data,
 740                                                                                 'parent_content_id' => $parent_item_id,
 741                                                                                 'ordering'                      => $order[$parent_item_id]-1);
 742                                         //append other array values if it exists
 743                                         if (is_array($items[$current_item_id])){
 744                                                 $items[$current_item_id] = array_merge($items[$current_item_id], $item_tmpl);
 745                                         } else {
 746                                                 $items[$current_item_id] = $item_tmpl;
 747                                         }
 748                                 }
 749                         }
 750                 }
 751
 752                 $my_data .= $data;
 753         }
 754
 755         /* glossary parser: */
 756         function glossaryStartElement($parser, $name, $attrs) {
 757                 global $element_path;
 758
 759                 array_push($element_path, $name);
 760         }
 761
 762         /* called when an element ends */
 763         /* removed the current element from the $path */
 764         function glossaryEndElement($parser, $name) {
 765                 global $element_path, $my_data, $imported_glossary;
 766                 static $current_term;
 767
 768                 if ($element_path === array('glossary', 'item', 'term') ||
 769                         $element_path === array('glossary:glossary', 'item', 'term')) {
 770                         $current_term = $my_data;
 771
 772                 } else if ($element_path === array('glossary', 'item', 'definition') ||
 773                                    $element_path === array('glossary:glossary', 'item', 'definition')) {
 774                         $imported_glossary[trim($current_term)] = trim($my_data);
 775                 }
 776
 777                 array_pop($element_path);
 778                 $my_data = '';
 779         }
 780
 781         function glossaryCharacterData($parser, $data){
 782                 global $my_data;
 783
 784                 $my_data .= $data;
 785         }
 786
 787 if (!isset($_POST['submit']) && !isset($_POST['cancel']) && !isset($_GET['oauth_token'])) {
 788         /* just a catch all */
 789         $msg->addError('NO_PRIV');
 790         header('Location: '.$_SERVER['HTTP_REFERER']);
 791         exit;
 792 } else if (isset($_POST['cancel'])) {
 793         $msg->addFeedback('IMPORT_CANCELLED');
 794
 795         header('Location: '.$_SERVER['HTTP_REFERER']);
 796         exit;
 797 }
 798
 799 $cid = intval($_POST['cid']);
 800
 801 //If user chooses to ignore validation.
 802 if(isset($_POST['ignore_validation']) && $_POST['ignore_validation']==1) {
 803         $skip_ims_validation = true;
 804 }
 805
 806 if (isset($_REQUEST['url']) && ($_REQUEST['url'] != 'http://') ) {
 807         if ($content = @file_get_contents($_REQUEST['url'])) {
 808                 $filename = substr(time(), -6). '.zip';
 809                 $full_filename = TR_CONTENT_DIR . $filename;
 810
 811                 if (!$fp = fopen($full_filename, 'w+b')) {
 812                         echo "Cannot open file ($filename)";
 813                         exit;
 814                 }
 815
 816                 if (fwrite($fp, $content, strlen($content) ) === FALSE) {
 817                         echo "Cannot write to file ($filename)";
 818                         exit;
 819                 }
 820                 fclose($fp);
 821         }
 822         $_FILES['file']['name']     = $filename;
 823         $_FILES['file']['tmp_name'] = $full_filename;
 824         $_FILES['file']['size']     = strlen($content);
 825         unset($content);
 826 //      $url_parts = pathinfo($_REQUEST['url']);
 827 //      $package_base_name_url = $url_parts['basename'];
 828     $package_base_name_url = md5(time());
 829 }
 830 $ext = pathinfo($_FILES['file']['name']);
 831 $ext = $ext['extension'];
 832
 833 if ($ext != 'zip') {
 834         $msg->addError('IMPORTDIR_IMS_NOTVALID');
 835 } else if ($_FILES['file']['error'] == 1) {
 836         $errors = array('FILE_MAX_SIZE', ini_get('upload_max_filesize'));
 837         $msg->addError($errors);
 838 } else if ( !$_FILES['file']['name'] || (!is_uploaded_file($_FILES['file']['tmp_name']) && !$_REQUEST['url'])) {
 839         $msg->addError('FILE_NOT_SELECTED');
 840 } else if ($_FILES['file']['size'] == 0) {
 841         $msg->addError('IMPORTFILE_EMPTY');
 842 }
 843 $msg->printAll();
 844 if ($msg->containsErrors()) {
 845         if (isset($_GET['tile'])) {
 846                 header('Location: '.$_base_path.'tools/tile/index.php');
 847         } else if ($oauth_import) {
 848                 echo "error=".urlencode('Invalid imported file');
 849         } else {
 850                 header('Location: '.$_SERVER['HTTP_REFERER']);
 851         }
 852         if (file_exists($full_filename)) @unlink($full_filename);
 853         exit;
 854 }
 855
 856 /* check if ../content/import/ exists */
 857 $import_path = TR_CONTENT_DIR . 'import/';
 858 $content_path = TR_CONTENT_DIR;
 859
 860 if (!is_dir($import_path)) {
 861         if (!@mkdir($import_path, 0700)) {
 862                 $msg->addError('IMPORTDIR_FAILED');
 863         }
 864 }
 865
 866 if (isset($_POST['_course_id'])) $import_path .= $_POST['_course_id'].'/';
 867 else $import_path .= Utility::getRandomStr(16).'/';
 868
 869 if (is_dir($import_path)) {
 870         FileUtility::clr_dir($import_path);
 871 }
 872
 873 if (!@mkdir($import_path, 0700)) {
 874         $msg->addError('IMPORTDIR_FAILED');
 875 }
 876
 877 if ($msg->containsErrors()) {
 878         if (isset($_GET['tile'])) {
 879                 header('Location: '.$_base_path.'tools/tile/index.php');
 880         } else if ($oauth_import) {
 881                 echo "error=".urlencode('Cannot create import directory');
 882         } else {
 883                 header('Location: '.$_SERVER['HTTP_REFERER']);
 884         }
 885         if (file_exists($full_filename)) @unlink($full_filename);
 886         exit;
 887 }
 888
 889 /* extract the entire archive into TR_COURSE_CONTENT . import/$course using the call back function to filter out php files */
 890 error_reporting(0);
 891 $archive = new PclZip($_FILES['file']['tmp_name']);
 892
 893 if ($archive->extract(  PCLZIP_OPT_PATH,        $import_path,
 894                                                 PCLZIP_CB_PRE_EXTRACT,  'preImportCallBack') == 0) {
 895         if ($oauth_import) {
 896                 echo "error=".urlencode('Cannot unzip the package');
 897         } else {
 898                 $msg->addError('IMPORT_FAILED');
 899                 echo 'Error : '.$archive->errorInfo(true);
 900         }
 901         FileUtility::clr_dir($import_path);
 902         header('Location: '.$_SERVER['HTTP_REFERER']);
 903         if (file_exists($full_filename)) @unlink($full_filename);
 904         exit;
 905 }
 906
 907
 908 /* initialize DAO objects */
 909 $coursesDAO = new CoursesDAO();
 910 $contentDAO = new ContentDAO();
 911 $testsQuestionsAssocDAO = new TestsQuestionsAssocDAO();
 912 $contentTestsAssocDAO = new ContentTestsAssocDAO();
 913
 914 // get the course's max_quota
 915 if (isset($_POST['_course_id']))
 916 {
 917         check_available_size($_POST['_course_id']);
 918 }
 919
 920 $items = array(); /* all the content pages */
 921 $order = array(); /* keeps track of the ordering for each content page */
 922 $path  = array();  /* the hierarchy path taken in the menu to get to the current item in the manifest */
 923 $dependency_files = array(); /* the file path for the dependency files */
 924
 925 /*
 926 $items[content_id/resource_id] = array(
 927                                                                         'title'
 928                                                                         'real_content_id' // calculated after being inserted
 929                                                                         'parent_content_id'
 930                                                                         'href'
 931                                                                         'ordering'
 932                                                                         );
 933 */
 934 $ims_manifest_xml = @file_get_contents($import_path.'imsmanifest.xml');
 935
 936 //scan for manifest xml if it's not on the top level.
 937 if ($ims_manifest_xml === false){
 938         $data = rscandir($import_path);
 939         $manifest_array = array();
 940         foreach($data as $scanned_file){
 941                 $scanned_file = realpath($scanned_file);
 942                 //change the file string to an array
 943                 $this_file_array = explode(DIRECTORY_SEPARATOR, $scanned_file);
 944                 if(empty($manifest_array)){
 945                         $manifest_array = $this_file_array;
 946                 }
 947                 $manifest_array = array_intersect_assoc($this_file_array, $manifest_array);
 948
 949                 if (strpos($scanned_file, 'imsmanifest')!==false){
 950                         $ims_manifest_xml = @file_get_contents($scanned_file);
 951                 }
 952         }
 953         if ($ims_manifest_xml !== false){
 954                 $import_path = implode(DIRECTORY_SEPARATOR, $manifest_array) . DIRECTORY_SEPARATOR;
 955         }
 956 }
 957
 958 //if no imsmanifest.xml found in the entire package, throw error.
 959 if ($ims_manifest_xml === false) {
 960         $msg->addError('NO_IMSMANIFEST');
 961
 962         if (file_exists($import_path . 'atutor_backup_version')) {
 963                 $msg->addError('NO_IMS_BACKUP');
 964         }
 965         FileUtility::clr_dir($import_path);
 966
 967         if (isset($_GET['tile'])) {
 968                 header('Location: '.$_base_path.'tools/tile/index.php');
 969         } else if ($oauth_import) {
 970                 echo "error=".urlencode('IMS manifest file does not appear to be valid');
 971         } else {
 972                 header('Location: '.$_SERVER['HTTP_REFERER']);
 973         }
 974         if (file_exists($full_filename)) @unlink($full_filename);
 975         exit;
 976 }
 977
 978 $xml_parser = xml_parser_create();
 979
 980 xml_parser_set_option($xml_parser, XML_OPTION_CASE_FOLDING, false); /* conform to W3C specs */
 981 xml_set_element_handler($xml_parser, 'startElement', 'endElement');
 982 xml_set_character_data_handler($xml_parser, 'characterData');
 983
 984 if (!xml_parse($xml_parser, $ims_manifest_xml, true)) {
 985         die(sprintf("XML error: %s at line %d",
 986                                 xml_error_string(xml_get_error_code($xml_parser)),
 987                                 xml_get_current_line_number($xml_parser)));
 988 }
 989 xml_parser_free($xml_parser);
 990
 991 // Check if all the files exists in the manifest, iff it's a IMS CC package.
 992 if ($content_type == 'IMS Common Cartridge') {
 993         checkResources($import_path);
 994 }
 995
 996 // Check if there are any errors during parsing.
 997 if ($msg->containsErrors()) {
 998         if (isset($_GET['tile'])) {
 999                 header('Location: '.$_base_path.'tools/tile/index.php');
1000         } else if ($oauth_import) {
1001                 echo "error=".urlencode('Error at parsing IMS manifest file');
1002         } else {
1003                 header('Location: '.$_SERVER['HTTP_REFERER']);
1004         }
1005         if (file_exists($full_filename)) @unlink($full_filename);
1006         exit;
1007 }
1008
1009 // added by Cindy Li on Jan 10, 2010
1010 // generate a course_id if the import is not into an existing course
1011 if (!isset($_POST['_course_id']))
1012 {
1013         if (isset($_POST['hide_course']))
1014                 $access = 'private';
1015         else
1016                 $access = 'public';
1017
1018         if (isset($course_primary_lang))
1019         {
1020                 $langcode_and_charset = explode('-', $course_primary_lang);
1021 //              $course_primary_lang = Utility::get3LetterLangCode($langcode_and_charset[0]);
1022                 $course_primary_lang = $langcode_and_charset[0];
1023         }
1024
1025         $_course_id = $coursesDAO->Create($_SESSION['user_id'], 'top', $access, $course_title, $course_description,
1026                      '', '', '', '', $course_primary_lang, '', '');
1027
1028         check_available_size($_course_id);
1029
1030         // insert author role into table "user_courses"
1031         $userCoursesDAO = new UserCoursesDAO();
1032         $userCoursesDAO->Create($_SESSION['user_id'], $_course_id, TR_USERROLE_AUTHOR, 0);
1033 }
1034 else $_course_id = $_POST['_course_id'];
1035
1036 // end of added by Cindy Li on Jan 10, 2010
1037
1038 /* generate a unique new package base path based on the package file name and date as needed. */
1039 /* the package name will be the dir where the content for this package will be put, as a result */
1040 /* the 'content_path' field in the content table will be set to this path. */
1041 /* $package_base_name_url comes from the URL file name (NOT the file name of the actual file we open)*/
1042 if (!$package_base_name && $package_base_name_url) {
1043         $package_base_name = substr($package_base_name_url, -6);
1044 } else if (!$package_base_name) {
1045         $package_base_name = substr($_FILES['file']['name'], 0, -4);
1046 }
1047
1048 $package_base_name = strtolower($package_base_name);
1049 $package_base_name = str_replace(array('\'', '"', ' ', '|', '\\', '/', '<', '>', ':'), '_' , $package_base_name);
1050 $package_base_name = preg_replace("/[^A-Za-z0-9._\-]/", '', $package_base_name);
1051
1052 $course_dir = TR_CONTENT_DIR.$_course_id.'/';
1053
1054 if (is_dir($course_dir.$package_base_name)) {
1055         $package_base_name .= '_'.date('ymdHis');
1056 }
1057
1058 if ($package_base_path) {
1059         $package_base_path = implode('/', $package_base_path);
1060 } elseif (empty($package_base_path)){
1061         $package_base_path = '';
1062 }
1063
1064 if ($xml_base_path) {
1065         $package_base_path = $xml_base_path . $package_base_path;
1066
1067         mkdir($import_path.$xml_base_path);
1068         $package_base_name = $xml_base_path . $package_base_name;
1069 }
1070
1071 /* get the top level content ordering offset */
1072 $order_offset = $contentDAO->getMaxOrdering($_course_id, 0);
1073 $lti_offset = array();  //since we don't need lti tools, the ordering needs to be subtracted
1074
1075 //reorder the items stack
1076 $common_path = removeCommonPath($items);
1077 $items = rehash($items);
1078 //debug($items);exit;
1079 foreach ($items as $item_id => $content_info)
1080 {
1081         //formatting field, default 1
1082         $content_formatting = 1;        //CONTENT_TYPE_CONTENT
1083
1084         //don't want to display glossary as a page
1085         if ($content_info['href']== $glossary_path . 'glossary.xml'){
1086                 continue;
1087         }
1088
1089         //if discussion tools, add it to the list of unhandled dts
1090         if ($content_info['type']=='imsdt_xmlv1p0'){
1091                 //if it will be taken care after (has dependency), then move along.
1092                 if (in_array($item_id, $avail_dt)){
1093                         $lti_offset[$content_info['parent_content_id']]++;
1094                         continue;
1095                 }
1096         }
1097
1098         //handle the special case of cc import, where there is no content association. The resource should
1099         //still be imported.
1100         if(!isset($content_info['parent_content_id'])){
1101                 //if this is a question bank
1102                 if ($content_info['type']=="imsqti_xmlv1p2/imscc_xmlv1p0/question-bank"){
1103                         addQuestions($content_info['href'], $content_info, $import_path);
1104                 }
1105         }
1106
1107         //if it has no title, most likely it is not a page but just a normal item, skip it
1108         if (!isset($content_info['title'])){
1109                 continue;
1110         }
1111
1112         //check dependency immediately, then handles it
1113         $head = '';
1114         if (is_array($content_info['dependency']) && !empty($content_info['dependency'])){
1115                 foreach($content_info['dependency'] as $dependency_ref){
1116                         //check if this is a discussion tool dependency
1117                         if ($items[$dependency_ref]['type']=='imsdt_xmlv1p0'){
1118                                 $items[$item_id]['forum'][$dependency_ref] = $items[$dependency_ref]['href'];
1119                         }
1120                         //check if this is a QTI dependency
1121                         if (strpos($items[$dependency_ref]['type'], 'imsqti_xmlv1p2/imscc_xmlv1p0') !== false){
1122                                 $items[$item_id]['tests'][$dependency_ref] = $items[$dependency_ref]['href'];
1123                         }
1124                 }
1125         }
1126
1127
1128         // remote href
1129         if (preg_match('/^http.*:\/\//', trim($content_info['href'])) )
1130         {
1131                 $content = '<a href="'.$content_info['href'].'" target="_blank">'.$content_info['title'].'</a>';
1132         }
1133         else
1134         {
1135                 if ($content_type == 'IMS Common Cartridge'){
1136                         //to handle import with purely images but nothing else
1137                         //don't need a content base path for it.
1138                         $content_new_path = $content_info['new_path'];
1139                         $content_info['new_path'] = '';
1140                 }
1141                 if (isset($content_info['href'], $xml_base_path)) {
1142                         $content_info['href'] = $xml_base_path . $content_info['href'];
1143                 }
1144                 if (!isset($content_info['href'])) {
1145                         // this item doesn't have an identifierref. so create an empty page.
1146                         // what we called a folder according to v1.2 Content Packaging spec
1147                         // Hop over
1148                         $content = '';
1149                         $ext = '';
1150                         $last_modified = date('Y-m-d H:i:s');
1151                 } else {
1152                         //$file_info = @stat(TR_CONTENT_DIR . 'import/'.$_POST['_course_id'].'/'.$content_info['href']);
1153                         $file_info = @stat($import_path.$content_info['href']);
1154                         if ($file_info === false) {
1155                                 continue;
1156                         }
1157
1158                         //$path_parts = pathinfo(TR_CONTENT_DIR . 'import/'.$_POST['_course_id'].'/'.$content_info['href']);
1159                         $path_parts = pathinfo($import_path.$content_info['href']);
1160                         $ext = strtolower($path_parts['extension']);
1161
1162                         $last_modified = date('Y-m-d H:i:s', $file_info['mtime']);
1163                 }
1164                 if (in_array($ext, array('gif', 'jpg', 'bmp', 'png', 'jpeg'))) {
1165                         /* this is an image */
1166                         $content = '<img src="'.$content_info['href'].'" alt="'.$content_info['title'].'" />';
1167                 } else if ($ext == 'swf') {
1168                         /* this is flash */
1169             /* Using default size of 550 x 400 */
1170
1171                         $content = '<object type="application/x-shockwave-flash" data="' . $content_info['href'] . '" width="550" height="400"><param name="movie" value="'. $content_info['href'] .'" /></object>';
1172
1173                 } else if ($ext == 'mov') {
1174                         /* this is a quicktime movie  */
1175             /* Using default size of 550 x 400 */
1176
1177                         $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="' . $content_info['href'] .'" width="550" height="400" controller="true" pluginspage="http://www.apple.com/quicktime/download/"></embed></object>';
1178
1179                 } else if ($ext == 'mp3') {
1180                         $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="' . $content_info['href'] .'" width="200" height="15" autoplay="false" pluginspage="http://www.apple.com/quicktime/download/"></embed></object>';
1181                 } else if (in_array($ext, array('wav', 'au'))) {
1182                         $content = '<embed SRC="'.$content_info['href'].'" autostart="false" width="145" height="60"><noembed><bgsound src="'.$content_info['href'].'"></noembed></embed>';
1183
1184                 } else if (in_array($ext, array('txt', 'css', 'html', 'htm', 'csv', 'asc', 'tsv', 'xml', 'xsl'))) {
1185                         if ($content_type == 'IMS Common Cartridge'){
1186                                 $content_info['new_path'] = $content_new_path;
1187                         }
1188
1189                         /* this is a plain text file */
1190
1191                         $content = file_get_contents($import_path.$content_info['href']);
1192                         if ($content === false) {
1193                                 /* if we can't stat() it then we're unlikely to be able to read it */
1194                                 /* so we'll never get here. */
1195                                 continue;
1196                         }
1197
1198                         // get the contents of the 'head' element
1199                         $head .= ContentUtility::getHtmlHeadByTag($content, $html_head_tags);
1200
1201                         // Specifically handle eXe package
1202                         // NOTE: THIS NEEDS WORK! TO FIND A WAY APPLY EXE .CSS FILES ONLY ON COURSE CONTENT PART.
1203                         // NOW USE OUR OWN .CSS CREATED SOLELY FOR EXE
1204                         $isExeContent = false;
1205
1206                         // check xml file in eXe package
1207                         if (preg_match("/<organization[ ]*identifier=\"eXe*>*/", $ims_manifest_xml))
1208                         {
1209                                 $isExeContent = true;
1210                         }
1211
1212                         // use ATutor's eXe style sheet as the ones from eXe conflicts with ATutor's style sheets
1213                         if ($isExeContent)
1214                         {
1215                                 $head = preg_replace ('/(<style.*>)(.*)(<\/style>)/ms', '\\1@import url(/docs/exestyles.css);\\3', $head);
1216                         }
1217
1218                         // end of specifically handle eXe package
1219
1220                         $content = ContentUtility::getHtmlBody($content);
1221                         if ($contains_glossary_terms)
1222                         {
1223                                 // replace glossary content package links to real glossary mark-up using [?] [/?]
1224                                 // refer to bug 3641, edited by Harris
1225                                 $content = preg_replace('/<a href="([.\w\d\s]+[^"]+)" target="body" class="at-term">([.\w\d\s&;"]+|.*)<\/a>/i', '[?]\\2[/?]', $content);
1226                         }
1227
1228                         /* potential security risk? */
1229                         if ( strpos($content_info['href'], '..') === false && !preg_match('/((.*)\/)*tests\_[0-9]+\.xml$/', $content_info['href'])) {
1230 //                              @unlink(TR_CONTENT_DIR . 'import/'.$_POST['_course_id'].'/'.$content_info['href']);
1231                         }
1232
1233                         // overwrite content if this is discussion tool.
1234                         if ($content_info['type']=='imsdt_xmlv1p0'){
1235                                 $dt_parser = new DiscussionToolsParser();
1236                                 $xml_content = @file_get_contents($import_path . $content_info['href']);
1237                                 $dt_parser->parse($xml_content);
1238                                 $forum_obj = $dt_parser->getDt();
1239                                 $content = $forum_obj->getText();
1240                                 unset($forum_obj);
1241                                 $dt_parser->close();
1242                         }
1243                 } else if ($ext) {
1244                         /* non text file, and can't embed (example: PDF files) */
1245                         $content = '<a href="'.$content_info['href'].'">'.$content_info['title'].'</a>';
1246                 }
1247         }
1248         $content_parent_id = $cid;
1249         if ($content_info['parent_content_id'] !== 0) {
1250                 $content_parent_id = $items[$content_info['parent_content_id']]['real_content_id'];
1251                 //if it's not there, use $cid
1252                 if (!$content_parent_id){
1253                         $content_parent_id = $cid;
1254                 }
1255         }
1256
1257         $my_offset = 0;
1258         if ($content_parent_id == $cid) {
1259                 $my_offset = $order_offset;
1260         }
1261
1262         /* replace the old path greatest common denomiator with the new package path. */
1263         /* we don't use str_replace, b/c there's no knowing what the paths may be         */
1264         /* we only want to replace the first part of the path.
1265         */
1266         if(is_array($all_package_base_path)){
1267                 $all_package_base_path = implode('/', $all_package_base_path);
1268         }
1269
1270
1271         if ($common_path != ''
1272           && ($content_info['new_path'] === $common_path
1273           || substr($content_info['new_path'], strlen($common_path)))) {
1274                 $content_info['new_path'] = $package_base_name . substr($content_info['new_path'], strlen($common_path));
1275         } else {
1276                 $content_info['new_path'] = $package_base_name . '/' . $content_info['new_path'];
1277         }
1278
1279         //handles weblinks
1280         if ($content_info['type']=='imswl_xmlv1p0'){
1281                 $weblinks_parser = new WeblinksParser();
1282                 $xml_content = @file_get_contents($import_path . $content_info['href']);
1283                 $weblinks_parser->parse($xml_content);
1284                 $content_info['title'] = $weblinks_parser->getTitle();
1285                 $content = $weblinks_parser->getUrl();
1286                 $content_folder_type = CONTENT_TYPE_WEBLINK;
1287                 $content_formatting = 2;
1288         }
1289
1290
1291         //if this file is a test_xml, create a blank page instead, for imscc.
1292         if (preg_match('/((.*)\/)*tests\_[0-9]+\.xml$/', $content_info['href'])
1293                 || preg_match('/imsqti\_(.*)/', $content_info['type'])) {
1294                 $content = ' ';
1295         }
1296
1297
1298         //check for content_type
1299         if ($content_formatting!=CONTENT_TYPE_WEBLINK){
1300                 $content_folder_type = (!isset($content_info['type'])?CONTENT_TYPE_FOLDER:CONTENT_TYPE_CONTENT);
1301         }
1302
1303         $items[$item_id]['real_content_id'] = $contentDAO->Create($_course_id, intval($content_parent_id),
1304                             ($content_info['ordering'] + $my_offset - $lti_offset[$content_info['parent_content_id']] + 1),
1305                             0, $content_formatting, "", $content_info['new_path'], $content_info['title'],
1306                             $content, $head, 1, $content_info['test_message'], $content_folder_type);
1307
1308
1309         /* get the tests associated with this content */
1310         if (!empty($items[$item_id]['tests']) || strpos($items[$item_id]['type'], 'imsqti_xmlv1p2/imscc_xmlv1p0') !== false){
1311                 $qti_import = new QTIImport($import_path);
1312                 if (isset($items[$item_id]['tests'])){
1313                         $loop_var = $items[$item_id]['tests'];
1314                 } else {
1315                         $loop_var = $items[$item_id]['file'];
1316                 }
1317
1318                 foreach ($loop_var as $array_id => $test_xml_file){
1319                         //check if this item is the qti item object, or it is the content item obj
1320                         //switch it to qti obj if it's content item obj
1321                         if ($items[$item_id]['type'] == 'webcontent'){
1322                                 $item_qti = $items[$array_id];
1323                         } else {
1324                                 $item_qti = $items[$item_id];
1325                         }
1326                         //call subrountine to add the questions.
1327                         $qids = addQuestions($test_xml_file, $item_qti, $import_path);
1328
1329                         //import test
1330                         if ($test_title==''){
1331                                 $test_title = $content_info['title'];
1332                         }
1333
1334                         $tid = $qti_import->importTest($test_title);
1335
1336                         //associate question and tests
1337                         foreach ($qids as $order=>$qid){
1338                                 if (isset($qti_import->weights[$order])){
1339                                         $weight = round($qti_import->weights[$order]);
1340                                 } else {
1341                                         $weight = 0;
1342                                 }
1343                                 $new_order = $order + 1;
1344                                 $testsQuestionsAssocDAO->Create($tid, $qid, $weight, $new_order);
1345
1346                         }
1347
1348                         //associate content and test
1349                         $contentTestsAssocDAO->Create($items[$item_id]['real_content_id'], $tid);
1350
1351
1352                 }
1353         }
1354
1355         /* get the a4a related xml */
1356         if (isset($items[$item_id]['a4a_import_enabled']) && isset($items[$item_id]['a4a']) && !empty($items[$item_id]['a4a'])) {
1357                 $a4a_import = new A4aImport($items[$item_id]['real_content_id']);
1358                 $a4a_import->setRelativePath($items[$item_id]['new_path']);
1359                 $a4a_import->importA4a($items[$item_id]['a4a']);
1360         }
1361
1362         // get the discussion tools (dependent to content)
1363         if (isset($items[$item_id]['forum']) && !empty($items[$item_id]['forum'])){
1364                 foreach($items[$item_id]['forum'] as $forum_ref => $forum_link){
1365                         $dt_parser = new DiscussionToolsParser();
1366                         $dt_import = new DiscussionToolsImport();
1367
1368                         //if this forum has not been added, parse it and add it.
1369                         if (!isset($added_dt[$forum_ref])){
1370                                 $xml_content = @file_get_contents($import_path . $forum_link);
1371                                 $dt_parser->parse($xml_content);
1372                                 $forum_obj = $dt_parser->getDt();
1373                                 $dt_import->import($forum_obj, $items[$item_id]['real_content_id'], $_course_id);
1374                                 $added_dt[$forum_ref] = $dt_import->getFid();
1375                         }
1376
1377                 }
1378         } elseif ($items[$item_id]['type']=='imsdt_xmlv1p0'){
1379                 //optimize this, repeated codes as above
1380                 $dt_parser = new DiscussionToolsParser();
1381                 $dt_import = new DiscussionToolsImport();
1382                 $xml_content = @file_get_contents($import_path . $content_info['href']);
1383                 $dt_parser->parse($xml_content);
1384                 $forum_obj = $dt_parser->getDt();
1385                 $dt_import->import($forum_obj, $items[$item_id]['real_content_id'], $_course_id);
1386                 $added_dt[$item_id] = $dt_import->getFid();
1387
1388         }
1389 }
1390
1391 //exit;//harris
1392 if ($package_base_path == '.') {
1393         $package_base_path = '';
1394 }
1395
1396 // create course directory
1397 if (!is_dir($course_dir)) {
1398         if (!@mkdir($course_dir, 0700)) {
1399                 $msg->addError('IMPORTDIR_FAILED');
1400         }
1401 }
1402
1403
1404
1405 //--- harris edit for path thing
1406 $file = $import_path.$common_path;
1407 if (is_dir($file)) {
1408     rename($file, TR_CONTENT_DIR.$_course_id.DIRECTORY_SEPARATOR.$package_base_name);
1409 }
1410 //--- end
1411 //takes care of the condition where the whole package doesn't have any contents but question banks
1412 //also is the case of urls
1413 if(is_array($all_package_base_path)){
1414         $all_package_base_path = implode('/', $all_package_base_path);
1415
1416         if(strpos($all_package_base_path, 'http:/')===false){
1417                 if (rename($import_path.$all_package_base_path, $course_dir.$package_base_name) === false) {
1418                 if (!$msg->containsErrors()) {
1419                                 if ($oauth_import) {
1420                                         echo "error=".urlencode('Cannot move lesson directory into content directory');
1421                                 } else {
1422                                         $msg->addError('IMPORT_FAILED');
1423                                 }
1424                 }
1425             }
1426         }
1427 }
1428
1429 FileUtility::clr_dir($import_path);
1430
1431 if (file_exists($full_filename)) @unlink($full_filename);
1432
1433 if ($oauth_import) {
1434         echo 'course_id='.$_course_id;
1435 } else {
1436         if (!$msg->containsErrors()) {
1437                 $msg->addFeedback('ACTION_COMPLETED_SUCCESSFULLY');
1438         }
1439         header('Location: ../course/index.php?_course_id='.$_course_id);
1440 }
1441 exit;
1442
1443 ?>