chamilo-lms2/main/document/webcam_receiver.php

<?php

/* JPEGCam Script *****UPDATED to lib webcamJS 2015-09-04***** */
/* Receives JPEG webcam submission and saves to local file. */
/* Make sure your directory has permission to write files as your web server user! */

//Changes on directory because move the proper script to the new lib upgrade directory
require_once '../inc/global.inc.php';
////Add security from Chamilo
api_protect_course_script();
api_block_anonymous_users();
///
# Save the audio to a URL-accessible directory for playback.
parse_str($_SERVER['QUERY_STRING'], $params);

if(isset($params['webcamname']) && isset($params['webcamdir']) && isset($params['webcamuserid'])) {
	$webcamname = $params['webcamname'];
	$webcamdir = $params['webcamdir'];
	$webcamuserid = $params['webcamuserid'];
}
else {
	api_not_allowed();
	die();
}

if ($webcamuserid!= api_get_user_id() || api_get_user_id()==0 || $webcamuserid==0) {
	api_not_allowed();
	die();
}


//clean
$webcamname = Security::remove_XSS($webcamname);
$webcamname = Database::escape_string($webcamname);
$webcamname = addslashes(trim($webcamname));
$webcamname = api_replace_dangerous_char($webcamname);
$webcamname = disable_dangerous_file($webcamname);
$webcamdir = Security::remove_XSS($webcamdir);

//security extension
$ext = explode('.', $webcamname);
$ext = strtolower($ext[sizeof($ext) - 1]);

if($ext!= 'jpg'){
	die();
}

//Do not use here check Fileinfo method because return: text/plain                //CHECK THIS BEFORE COMMIT

$dirBaseDocuments = api_get_path(SYS_COURSE_PATH).$_course['path'].'/document';
$saveDir = $dirBaseDocuments.$webcamdir;
$current_session_id = api_get_session_id();
$groupId = api_get_group_id();

//Avoid duplicates
$webcamname_to_save=$webcamname;
$title_to_save=str_replace('_',' ',$webcamname);
$webcamname_noex=basename($webcamname, ".jpg");
if (file_exists($saveDir.'/'.$webcamname_noex.'.'.$ext)){
		$i = 1;
		while (file_exists($saveDir.'/'.$webcamname_noex.'_'.$i.'.'.$ext)) $i++;
		$webcamname_to_save = $webcamname_noex . '_' . $i . '.'.$ext;
		$title_to_save = $webcamname_noex . '_' . $i . '.'.$ext;
		$title_to_save = str_replace('_',' ',$title_to_save);
}

$documentPath = $saveDir.'/'.$webcamname_to_save;

//read content
//Change to move_uploaded_file() function instead file_get_contents() to adapt the new lib
$content = move_uploaded_file($_FILES['webcam']['tmp_name'], $documentPath);
if (!$content) {
	print "PHP ERROR: Failed to read data\n";
	exit();
}

//add document to database
	$doc_id = add_document($_course, $webcamdir.'/'.$webcamname_to_save, 'file', filesize($documentPath), $title_to_save);
	api_item_property_update($_course, TOOL_DOCUMENT, $doc_id, 'DocumentAdded', $_user['user_id'], $groupId, null, null, null, $current_session_id);
///
$url = 'http://' . $_SERVER['HTTP_HOST'] . dirname($_SERVER['REQUEST_URI']) . '/' . $documentPath;
print get_lang('ClipSent');