File Source for api.php

<?php
/* See license terms in /dokeos_license.txt */
/**
==============================================================================
* This is an interface between Dokeos and Videoconference application
*
==============================================================================
*/
/*==== DEBUG ====*/
$debug=255;
/*==== CONSTANTS ==== */
define('VIDEOCONF_UPLOAD_PATH', '/videoconf');
$presentation_extension = array('.ppt', '.odp');
$image_extension = array ('.png', '.jpg', '.gif', '.jpeg');
if ($debug>0)
{
// dump the request
$v = array_keys(get_defined_vars());
error_log(var_export($v, true),3, '/tmp/log');
foreach (array_keys(get_defined_vars()) as $k) {
if ($k == 'GLOBALS')
continue;
error_log($k, 3, '/tmp/log');
error_log(var_export($$k, true), 3, '/tmp/log');
}
}
/*==== Flash loose the cookie ===*/
/* needed when using the nice upload window :
if ($_SERVER['HTTP_USER_AGENT'] == 'Shockwave Flash') {
$sid = $_REQUEST['sid'];
if ($debug>0) error_log("reusing: ".$sid);
session_id($sid);
} */
/*==== INCLUDE ====*/
require_once ('../inc/global.inc.php');
api_block_anonymous_users();
require_once (api_get_path(LIBRARY_PATH)."course.lib.php");
require_once (api_get_path(LIBRARY_PATH)."document.lib.php");
require_once (api_get_path(LIBRARY_PATH)."fileUpload.lib.php");
require_once ("../newscorm/learnpath.class.php");
require_once ("../newscorm/openoffice_presentation.class.php");
/*==== Variables initialisation ====*/
$action = $_REQUEST["action"]; //safe as only used in if()'s
$seek = array('/','%2F','..');
$destroy = array('','','');
$cidReq = str_replace($seek,$destroy,$_REQUEST["cidReq"]);
$cidReq = Security::remove_XSS($cidReq);
$user_id = api_get_user_id();
$coursePath = api_get_path(SYS_COURSE_PATH).$cidReq.'/document';
$_course = CourseManager::get_course_information($cidReq);
$_course['path'] = $_course['directory'];
// FIXME: add_document needs this to work
$_course['dbName'] = $_course['db_name'];
// FIXME: check if CourseManager::get_user_in_course_status return !=
// COURSEMANAGER when the code is not valid
if ($debug>0) error_log($coursePath, 0);
if ($action == "uploadgui")
{
echo '<form enctype="multipart/form-data" action="api.php" method="POST">
<input type="hidden" name="MAX_FILE_SIZE" value="100000000" />
<input type="hidden" name="action" value="upload" />
<input type="hidden" name="cidReq" value="'.$cidReq.'" />
<input type="hidden" name="sid" value="'.Security::remove_XSS($_REQUEST["sid"]).'" />
'.get_lang('SelectFile').': <input name="Filedata" type="file" /><br />
<input type="submit" value="'.get_lang('UploadFile').'" />
</form>
';
die();
}
else if ($action == "upload")
{
if ($debug >0) error_log("upload".$_FILES['Filedata']);
/*==== PERMISSION ====*/
$permissions = CourseManager::get_user_in_course_status($user_id, $cidReq);
if ($permissions != COURSEMANAGER)
{
if ($debug >0) error_log("Upload from videoconf not allowed !!!",0);
die('Not allowed'); // this user is not allowed to add upload documents
}
/*==== UPLOAD ====*/
$destPath = $coursePath.VIDEOCONF_UPLOAD_PATH;
/*==== creation of /videoconf ====*/
if (!is_dir($destPath))
{
$result = create_unexisting_directory($_course,$user_id,0,NULL,$coursePath,VIDEOCONF_UPLOAD_PATH);
if (!$result)
{
if ($debug>0) error_log("Can't create ".$destPath." folder",0);
}
}
/*==== file upload ====*/
$newPath = $_FILES['Filedata']['name'];
if($debug>0) error_log($newPath);
/*==== extension extraction ====*/
$file_name = (strrpos($newPath,'.')>0 ? substr($newPath, 0, strrpos($newPath,'.')) : $newPath);
$file_extension = (strrpos($newPath,'.')>0 ? substr($newPath, strrpos($newPath,'.'),10) : '');
if($debug>0) error_log(strrpos($newPath,'.'));
if($debug>0) error_log($file_extension);
/*==== conversion if needed ====*/
if (!in_array(strtolower($file_extension), $image_extension))
{
if($debug>0) error_log("converting: ".$file_extension);
$take_slide_name = false;
$o_ppt = new OpenofficePresentation($take_slide_name);
$o_ppt -> set_slide_size(640,480);
$o_ppt -> convert_document($_FILES['Filedata'],'add_docs_to_visio');
}
echo '<html><body><script language="javascript">setTimeout(1000,window.close());</script></body></html>';
}
else if ($action == "service")
{
/*==== List files ====*/
if ($debug>0) error_log("sending file list",0);
$subaction = $_REQUEST["subaction"];
$is_manager = (CourseManager::get_user_in_course_status($user_id, $cidReq) == COURSEMANAGER);
if ($subaction == "list")
{
// FIXME: check security around $_REQUEST["cwd"]
$cwd = $_REQUEST["cwd"];
// treat /..
$nParent = 0; // the number of /.. into the url
while (substr($cwd, -3, 3) == "/..")
{
// go to parent directory
$cwd= substr($cwd, 0, -3);
if (strlen($cwd) == 0) $cwd="/";
$nParent++;
}
for (;$nParent >0; $nParent--){
$cwd = (strrpos($cwd,'/')>-1 ? substr($cwd, 0, strrpos($cwd,'/')) : $cwd);
}
if (strlen($cwd) == 0) $cwd="/";
if (Security::check_abs_path($cwd,api_get_path(SYS_PATH)))
die();
// check if user can delete files. He must be manager and be inside /videoconf
$is_below_videoconf_dir = (substr($cwd,0,strlen(VIDEOCONF_UPLOAD_PATH)) == VIDEOCONF_UPLOAD_PATH);
if($debug>0) error_log('Current working directory: '.$cwd);
if($debug>0) error_log('Videoconf upload path: '.VIDEOCONF_UPLOAD_PATH);
/* $canDelete = ($canDelete && $isBellowVideoConfUploadPath);
*/
$can_delete = ($is_manager && $is_below_videoconf_dir);
// get files list
$files = DocumentManager::get_all_document_data($_course, $cwd, 0, NULL, false);
printf("<dokeosobject><fileListMeta></fileListMeta><fileList>");
printf("<folders>");
// title filter
if (is_array($files)) foreach (array_keys($files) as $k)
{
// converting to UTF-8
$files[$k]['title'] = mb_convert_encoding(
strlen($files[$k]['title']) > 32 ?
substr($files[$k]['title'],0, 32)."..." :
$files[$k]['title'],
'utf-8',api_get_setting('platform_charset'));
// removing '<', '>' and '_'
$files[$k]['title'] = str_replace(array('<','>','_'),' ', $files[$k]['title']);
}
if(is_array($files))
{
foreach($files as $i)
{
if ($i["filetype"] == "folder")
printf('<folder><path>%s</path><title>%s</title><canDelete>%s</canDelete></folder>', $i['path'],$i['title'],($can_delete?'true':'false'));
}
}
printf("</folders><files>");
if(is_array($files))
{
foreach($files as $i) {
$extension = (strrpos($i['path'],'.')>0 ? substr($i['path'], strrpos($i['path'],'.'),10) : '');
if ($i["filetype"] == "file" && in_array(strtolower($extension), $image_extension))
printf('<file><path>%s</path><title>%s</title><canDelete>%s</canDelete></file>', $i['path'],$i['title'],($can_delete?'true':'false'));
}
}
printf("</files><ppts>");
printf("</ppts>");
printf("</fileList></dokeosobject>");
}
else if ($subaction == "delete")
{
/*==== PERMISSION ====*/
$permissions = CourseManager::get_user_in_course_status($user_id, $cidReq);
if ($permissions != COURSEMANAGER)
{
if ($debug > 0) error_log("Upload from videoconf not allowed !!!",0);
die(); // this user is not allowed to add upload documents
}
/*==== DELETE ====*/
$path = str_replace('../','',$_REQUEST["path"]);
if ((substr($path,0,strlen(VIDEOCONF_UPLOAD_PATH)) != VIDEOCONF_UPLOAD_PATH))
{
if ($debug >0 ) error_log("Delete from videoconf for "+$path+" NOT ALLOWED",0);
die();
}
DocumentManager::delete_document($_course, $path, $coursePath);
echo "<result>OK</result>"; // We have to returns something to OpenLaszlo
}
}
else if ($action == "download")
{
/*==== DOWNLOAD ====*/
//check if the document is in the database
if(!DocumentManager::get_document_id($_course,$_REQUEST['file']))
{
//file not found!
if ($debug>0) error_log("404 ".$_REQUEST["file"]);
header("HTTP/1.0 404 Not Found");
$error404 = '<!DOCTYPE HTML PUBLIC "-//IETF//DTD HTML 2.0//EN">';
$error404 .= '<html><head>';
$error404 .= '<title>404 Not Found</title>';
$error404 .= '</head><body>';
$error404 .= '<h1>Not Found</h1>';
$error404 .= '<p>The requested URL was not found on this server.</p>';
$error404 .= '<hr>';
$error404 .= '</body></html>';
echo($error404);
exit;
}
$doc_url = str_replace('../','',$_REQUEST['file']);
if ($debug >0) error_log($doc_url);
$full_file_name = $coursePath.$doc_url;
DocumentManager::file_send_for_download($full_file_name,false);
exit;
}
?>

Source for file api.php