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189 lines
7.5 KiB
189 lines
7.5 KiB
<?php // $Id: downloadfolder.inc.php 19385 2009-03-27 20:48:57Z iflorespaz $
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/**
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==============================================================================
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* Functions and main code for the download folder feature
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*
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* @package dokeos.document
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==============================================================================
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*/
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$path = $_GET['path'];
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//prevent some stuff
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if(empty($path))
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{
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$path='/';
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}
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//check to see if they want to download an existing folder
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if(($path!='/') && (!DocumentManager::get_document_id($_course,$path)))
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{
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$path='/';
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}
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//zip library for creation of the zipfile
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include(api_get_path(LIBRARY_PATH).'pclzip/pclzip.lib.php');
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//we need this path to clean it out of the zip file
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//I'm not using dirname as it gives too much problems (cfr. \)
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$remove_dir = ($path!='/') ? substr($path,0,strlen($path) - strlen(basename($path))) : '/';
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//place to temporarily stash the zipfiles
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$temp_zip_dir = $sys_course_path.$_course['path']."/temp";
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//create the temp dir if it doesn't exist
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//or do a cleanup befor creating the zipfile
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if(!is_dir($temp_zip_dir))
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{
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mkdir($temp_zip_dir, api_get_permissions_for_new_directories());
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}
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//cleanup: check the temp dir for old files and delete them
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else
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{
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$handle=opendir($temp_zip_dir);
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while (false!==($file = readdir($handle)))
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{
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if ($file != "." && $file != "..")
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{
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//the "age" of the file in hours
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$Diff = (time() - filemtime("$temp_zip_dir/$file"))/60/60;
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//delete files older than 4 hours
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if ($Diff > 4) unlink("$temp_zip_dir/$file");
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}
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}
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closedir($handle);
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}
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//create zipfile of given directory
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$temp_zip_file = $temp_zip_dir."/".md5(time()).".zip";
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$zip_folder=new PclZip($temp_zip_file);
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$doc_table = Database::get_course_table(TABLE_DOCUMENT);
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$prop_table = Database::get_course_table(TABLE_ITEM_PROPERTY);
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//Put the files in the zip
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//2 possibilities: admins get all files and folders in the selected folder (except for the deleted ones)
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//normal users get only visible files that are in visible folders
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//admins are allowed to download invisible files
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if (is_allowed_to_edit())
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{
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//folder we want to zip --> no longer used, deleted files are included too like this
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//$what_to_zip = $sys_course_path.$_course['path']."/document".$path;
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//creation of the zipped folder
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//$zip_folder->create($what_to_zip ,PCLZIP_OPT_REMOVE_PATH, $sys_course_path.$_course['path']."/document".$remove_dir );
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//set the path that will be used in the query
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if($path=='/')
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{
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$querypath=''; // to prevent ...path LIKE '//%'... in query
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}
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else
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{
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$querypath=$path;
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}
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//search for all files that are not deleted => visibility != 2
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$query = Database::query("SELECT path FROM $doc_table AS docs,$prop_table AS props WHERE `props`.`tool`='".TOOL_DOCUMENT."' AND `docs`.`id`=`props`.`ref` AND `docs`.`path` LIKE '".$querypath."/%' AND `docs`.`filetype`='file' AND `props`.`visibility`<>'2' AND `props`.`to_group_id`=".$to_group_id."",__FILE__,__LINE__);
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//add tem to the zip file
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while ($not_deleted_file = Database::fetch_assoc($query))
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{
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$zip_folder->add($sys_course_path.$_course['path']."/document".$not_deleted_file['path'],PCLZIP_OPT_REMOVE_PATH, $sys_course_path.$_course['path']."/document".$remove_dir);
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}
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}
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//for other users, we need to create a zipfile with only visible files and folders
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else
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{
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if($path=='/')
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{
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$querypath=''; // to prevent ...path LIKE '//%'... in query
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}
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else
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{
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$querypath=$path;
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}
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//big problem: visible files that are in a hidden folder are included when we do a query for visiblity='v'!!!
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//so... I do it in a couple of steps:
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//1st: get all files that are visible in the given path
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$query = Database::query("SELECT path FROM $doc_table AS docs,$prop_table AS props WHERE `props`.`tool`='".TOOL_DOCUMENT."' AND `docs`.`id`=`props`.`ref` AND `docs`.`path` LIKE '".$querypath."/%' AND `props`.`visibility`='1' AND `docs`.`filetype`='file' AND `props`.`to_group_id`=".$to_group_id,__FILE__,__LINE__);
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//add them to an array
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while ($all_visible_files = Database::fetch_assoc($query))
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{
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$all_visible_files_path[] = $all_visible_files['path'];
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//echo "visible files: ".$sys_course_path.$_course['path']."/document".$all_visible_files['path']."<br>";
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}
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//echo('<pre>');
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//print_r($all_visible_files_path);
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//echo('</pre>');
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//2nd: get all folders that are invisible in the given path
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$query2 = Database::query("SELECT path FROM $doc_table AS docs,$prop_table AS props WHERE `props`.`tool`='".TOOL_DOCUMENT."' AND `docs`.`id`=`props`.`ref` AND `docs`.`path` LIKE '".$querypath."/%' AND `props`.`visibility`<>'1' AND `docs`.`filetype`='folder'",__FILE__,__LINE__);
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//if we get invisible folders, we have to filter out these results from all visible files we found
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if(Database::num_rows($query2)>0)
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{
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//add tem to an array
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while ($invisible_folders = Database::fetch_assoc($query2))
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{
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//3rd: get all files that are in the found invisible folder (these are "invisible" too)
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//echo "<br><br>invisible folders: ".$sys_course_path.$_course['path']."/document".$invisible_folders['path']."<br>";
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$query3 = Database::query("SELECT path FROM $doc_table AS docs,$prop_table AS props WHERE `props`.`tool`='".TOOL_DOCUMENT."' AND `docs`.`id`=`props`.`ref` AND `docs`.`path` LIKE '".$invisible_folders['path']."/%' AND `docs`.`filetype`='file' AND `props`.`visibility`='1'",__FILE__,__LINE__);
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//add tem to an array
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while ($files_in_invisible_folder = Database::fetch_assoc($query3))
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{
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$files_in_invisible_folder_path[] = $files_in_invisible_folder['path'];
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//echo "<br><br>files in invisible folders: ".$sys_course_path.$_course['path']."/document".$files_in_invisible_folder['path']." <b>id ".$files_in_invisible_folder['id']."</b><br>";
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}
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}
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//compare the array with visible files and the array with files in invisible folders
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//and keep the difference (= all visible files that are not in an invisible folder)
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$files_for_zipfile = diff((array) $all_visible_files_path,(array) $files_in_invisible_folder_path);
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}
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//no invisible folders found, so all visible files can be added to the zipfile
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else
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{
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$files_for_zipfile = $all_visible_files_path;
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}
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//add all files in our final array to the zipfile
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//echo("path to remove from file ".$sys_course_path.$_course['path']."/document".$remove_dir.'<br>');
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//echo('<b>FILES FOR ZIP</b><br>');
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//print_r($files_for_zipfile);
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for($i=0;$i<count($files_for_zipfile);$i++)
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{
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$zip_folder->add($sys_course_path.$_course['path']."/document".$files_for_zipfile[$i],PCLZIP_OPT_REMOVE_PATH, $sys_course_path.$_course['path']."/document".$remove_dir);
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//echo $sys_course_path.$_course['path']."/document".$files_for_zipfile[$i]."<br>";
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}
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}//end for other users
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//exit;
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//logging
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// launch event
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event_download(($path=='/')?'documents.zip (folder)':basename($path).'.zip (folder)');
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//start download of created file
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//send_file_to_client($temp_zip_file, basename(empty($_GET['id'])?"documents":$_GET['id']).".zip");
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$name = ($path=='/')?'documents.zip':basename($path).'.zip';
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DocumentManager::file_send_for_download($temp_zip_file,true,$name);
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@unlink($temp_zip_file);
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exit;
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/**
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==============================================================================
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* Extra function (only used here)
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==============================================================================
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*/
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/**
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* Return the difference between two arrays, as an array of those key/values
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* Use this as array_diff doesn't give the
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*
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* @param array $arr1 first array
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* @param array $arr2 second array
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* @return difference between the two arrays
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*/
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function diff($arr1,$arr2) {
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$res = array(); $r=0;
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foreach ($arr1 as $av) {
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if (!in_array($av,$arr2)){
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$res[$r]=$av; $r++;
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}
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}
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return $res;
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}
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?>
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