Cristian Fasanando
17 years ago
parent
207b6ff2be
commit
202abc0069
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<?php // $Id: $
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/* |
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============================================================================== |
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Dokeos - elearning and course management software |
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Copyright (c) 2008 Dokeos SPRL |
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For a full list of contributors, see "credits.txt". |
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The full license can be read in "license.txt". |
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This program is free software; you can redistribute it and/or |
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modify it under the terms of the GNU General Public License |
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as published by the Free Software Foundation; either version 2 |
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of the License, or (at your option) any later version. |
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See the GNU General Public License for more details. |
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Contact address: Dokeos, rue du Corbeau, 108, B-1030 Brussels, Belgium |
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info@dokeos.com |
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============================================================================== |
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*/ |
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/** |
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============================================================================== |
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* This file is responsible for passing requested documents to the browser. |
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* Html files are parsed to fix a few problems with URLs, |
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* but this code will hopefully be replaced soon by an Apache URL |
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* rewrite mechanism. |
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* |
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* @package dokeos.studentpublication |
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============================================================================== |
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*/ |
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/* |
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============================================================================== |
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MAIN CODE |
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============================================================================== |
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*/ |
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session_cache_limiter('public'); |
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require '../inc/global.inc.php'; |
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$this_section=SECTION_COURSES; |
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require_once(api_get_path(LIBRARY_PATH).'document.lib.php'); |
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require (api_get_path(LIBRARY_PATH).'events.lib.inc.php'); |
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//include 'agenda.inc.php'; |
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// IMPORTANT to avoid caching of documents |
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header('Expires: Wed, 01 Jan 1990 00:00:00 GMT'); |
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header('Cache-Control: public'); |
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header('Pragma: no-cache'); |
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//protection |
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api_protect_course_script(true); |
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$doc_url = $_GET['file']; |
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//change the '&' that got rewritten to '///' by mod_rewrite back to '&' |
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$doc_url = str_replace('///', '&', $doc_url); |
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//still a space present? it must be a '+' (that got replaced by mod_rewrite) |
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$doc_url = str_replace(' ', '+', $doc_url); |
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$doc_url = str_replace('/..', '', $doc_url); //echo $doc_url; |
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if (! isset($_course)) { |
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api_not_allowed(true); |
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} |
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$full_file_name = api_get_path(SYS_COURSE_PATH).api_get_course_path().'/'.$doc_url; |
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$tbl_student_publication = Database::get_course_table(TABLE_STUDENT_PUBLICATION); |
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// launch event |
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event_download($doc_url); |
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$sql='SELECT title FROM '.$tbl_student_publication.' |
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WHERE url LIKE BINARY "'.$doc_url.'"'; |
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$result= api_sql_query($sql, __FILE__, __LINE__); |
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$row= Database::fetch_array($result); |
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$title = str_replace(' ','_', $row['title']); |
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DocumentManager::file_send_for_download($full_file_name,TRUE, $title); |
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exit; |
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?> |
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@ -0,0 +1,150 @@ |
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<?php // $Id: $
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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.studentpublications |
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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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//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($temp_zip_dir)) { |
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mkdir($temp_zip_dir); |
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} else { |
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//cleanup: check the temp dir for old files and delete them |
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$handle=opendir($temp_zip_dir); |
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while (false!==($file = readdir($handle))) { |
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if ($file != "." && $file != "..") { |
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//the "age" of the file in hours |
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$Diff = (time() - filemtime("$temp_zip_dir/$file"))/60/60; |
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//delete files older than 4 hours |
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if ($Diff > 4) { |
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unlink("$temp_zip_dir/$file"); |
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} |
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} |
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} |
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closedir($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($temp_zip_file); |
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$tbl_student_publication = Database::get_course_table(TABLE_STUDENT_PUBLICATION); |
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$prop_table = Database::get_course_table(TABLE_ITEM_PROPERTY); |
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//Put the files in the zip |
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//2 possibilities: admins get all files and folders in the selected folder (except for the deleted ones) |
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//normal users get only visible files that are in visible folders |
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//admins are allowed to download invisible files |
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if (is_allowed_to_edit()) { |
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//folder we want to zip --> no longer used, deleted files are included too like this |
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//$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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$querypath=''; // to prevent ...path LIKE '//%'... in query |
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} else { |
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$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 = api_sql_query("SELECT url FROM $tbl_student_publication AS work,$prop_table AS props WHERE props.tool='work' AND work.id=props.ref AND work.url LIKE 'work".$querypath."/%' AND work.filetype='file' AND props.visibility<>'2'",__FILE__,__LINE__); |
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//add tem to the zip file |
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while ($not_deleted_file = mysql_fetch_assoc($query)) { //var_dump($sys_course_path.$_course['path']."/".$not_deleted_file['url']);exit(); |
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$zip_folder->add($sys_course_path.$_course['path']."/".$not_deleted_file['url'],PCLZIP_OPT_REMOVE_PATH, $sys_course_path.$_course['path']."/work".$remove_dir); |
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} |
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} |
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//for other users, we need to create a zipfile with only visible files and folders |
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else |
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{ |
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if ($path=='/') { |
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$querypath=''; // to prevent ...path LIKE '//%'... in query |
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} else { |
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$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 = api_sql_query("SELECT url FROM $tbl_student_publication AS work,$prop_table AS props WHERE props.tool='work' AND work.id=props.ref AND work.url LIKE 'work".$querypath."/%' AND work.filetype='file' AND props.visibility='1' ",__FILE__,__LINE__); |
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//add them to an array |
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$all_visible_files_path = array(); |
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while ($all_visible_files = mysql_fetch_assoc($query)) { |
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$all_visible_files_path[] = $all_visible_files['url']; |
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} |
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//2nd: get all folders that are invisible in the given path |
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$query2 = api_sql_query("SELECT url FROM $tbl_student_publication AS work,$prop_table AS props WHERE props.tool='work' AND work.id=props.ref AND work.url LIKE 'work".$querypath."/%' AND work.filetype='file' AND props.visibility<>'1'",__FILE__,__LINE__); |
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//if we get invisible folders, we have to filter out these results from all visible files we found |
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if (Database::num_rows($query2)>0) { |
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//add tem to an array |
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while ($invisible_folders = mysql_fetch_assoc($query2)) { |
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//3rd: get all files that are in the found invisible folder (these are "invisible" too) |
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$query3 = api_sql_query("SELECT url FROM $tbl_student_publication AS work,$prop_table AS props WHERE props.tool='work' AND work.id=props.ref AND work.url LIKE 'work".$invisible_folders['path']."/%' AND work.filetype='file' AND props.visibility='1'",__FILE__,__LINE__); |
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//add tem to an array |
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while ($files_in_invisible_folder = mysql_fetch_assoc($query3)) { |
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$files_in_invisible_folder_path[] = $files_in_invisible_folder['url']; |
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} |
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} |
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//compare the array with visible files and the array with files in invisible folders |
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//and keep the difference (= all visible files that are not in an invisible folder) |
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$files_for_zipfile = diff((array) $all_visible_files_path,(array) $files_in_invisible_folder_path); |
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} else { |
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//no invisible folders found, so all visible files can be added to the zipfile |
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$files_for_zipfile = $all_visible_files_path; |
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} |
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//add all files in our final array to the zipfile |
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for ($i=0;$i<count($files_for_zipfile);$i++) { |
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$zip_folder->add($sys_course_path.$_course['path']."/".$files_for_zipfile[$i],PCLZIP_OPT_REMOVE_PATH, $sys_course_path.$_course['path']."/work".$remove_dir); |
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} |
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}//end for other users |
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//logging |
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// launch event |
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event_download(basename($path).'.zip (folder)'); |
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//start download of created file |
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$name = basename($path).'.zip'; |
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DocumentManager::file_send_for_download($temp_zip_file,true,$name); |
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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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