Now you can create folders without DoS

1 files changed, 38 insertions, 33 deletions

diff --git a/www/createfolder.php b/www/createfolder.php
index cfcf4b2..b99a033 100644
--- a/www/createfolder.php
+++ b/www/createfolder.php
@@ -10,61 +10,65 @@ if(!$_SESSION["login"]){
 if($_SERVER['REQUEST_METHOD'] == 'POST'){
 
 	function database_error(){
-		echo "Database error!"
+		echo "Database error!";
 		exit;
 	}
 
 	$folder=$_POST["folder"];
-	$name = $_SESSION["username"];
+	$name = $_POST["username"];
 	$public = SQLite3::escapeString("$_POST[public]");
-	$pwd = SQLite3::escapeString("$_POST[pdw]");
+	$pwd_unsafe = $_POST["pwd"];
+	$pwd = SQLite3::escapeString("$pwd_unsafe");
 	$type = SQLite3::escapeString("$_POST[type]");
 
-	if(preg_match("/^//", $folder)){
+
+	if(preg_match("/^\//", $folder)){
 		$absolutpath = true;
+		$k=1;
 	} else {
 		$absolutpath = false;
 	}
 
+
 	$folder_array_unsafe = explode("/",$folder);
-	$length = count($folder);
+	$length = count($folder_array_unsafe);
 
 	$db = new SQLite3("../database/sqlite.db");
 
-	$k=1;
-
-	for($i=0; $i++; $i<$length){
-		$folder_array[$i]=SQLite3::escapeString("$folder_array_unsafe[$i]");
-		if($absolutpath){
-			if(db->exec("
-				BEGIN TRANSACTION;
-				INSERT INTO $name (id, folder, name, type, public) VALUES (NULL, $k, $folder_array[$i], '$type', '$public');
-				COMMIT;
-			")){
-				$primary_key_db = $db->query("SELECT id FROM $name WHERE name='$folder_array[$i]");
+	for($i=0; $i<$length; $i++){
+		if(!empty($folder_array_unsafe[$i])){
+			$folder_array[$i]=SQLite3::escapeString("$folder_array_unsafe[$i]");
+			if($absolutpath){
+				if($db->exec("
+					INSERT INTO $name (id, folder, name, type, public) VALUES (NULL, $k, '$folder_array[$i]', '$type', '$public');
+				")){
+					$primary_key_db = $db->query("SELECT id FROM $name WHERE name='$folder_array[$i]'");
+					$primary_key_ar = $primary_key_db->fetchArray(SQLITE3_NUM);
+					$primary_key = $primary_key_ar[0];
+					$k=$primary_key;
+				} else {
+					database_error();
+				}
+			} else {
+				$primary_key_db = $db->query("SELECT id FROM $name WHERE name='$pwd'");
 				$primary_key_ar = $primary_key_db->fetchArray(SQLITE3_NUM);
 				$primary_key = $primary_key_ar[0];
-				$k=$primary_key;
-			} else {
-				database_error();
-			}
-		} else {
-			$primary_key_db = $db->query("SELECT id FROM $name WHERE name='$pwd'");
-			$primary_key_ar = $primary_key_db->fetchArray(SQLITE3_NUM);
-			$primary_key = $primary_key_ar[0];
-			if(db->exec("
-				BEGIN TRANSACTION;
-				INSERT INTO $name (id, folder, name, type, public) VALUES (NULL, $primary_key, '$folder_array[$i]', '$type', '$public');
+				if($db->exec("
+					BEGIN TRANSACTION;
+					INSERT INTO $name (id, folder, name, type, public) VALUES (NULL, $primary_key, '$folder_array[$i]', '$type', '$public');
 					COMMIT;
-			")){
-				$pwd='$folder_array[$i]';
-			} else {
-				database_error();
+				")){
+					$pwd='$folder_array[$i]';
+				} else {
+					database_error();
+				}
 			}
 		}
-		
+
 	}
-	echo "END";
+
+	header("Refresh: 0; /$name");
+
 } else {
 
 	echo "Hallo $name
@@ -72,6 +76,7 @@ if($_SERVER['REQUEST_METHOD'] == 'POST'){
 		<p> Folder: <input type='text' name='folder'></p>
 		<p> Public? <input type='text' name='public'></p>
 		<p> pwd: <input type='text' name='pwd'></p>
+		<input type='hidden' name='username' value='$_SESSION[username]'>
 		<input type='hidden' name='type' value='FOLDER'>
 		<input type='submit' name='submit' value='invite'>
 	</form>";