/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You under the Apache License, Version 2.0
* (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.apache.tomcat.util.http.fileupload;
/**
* This exception is thrown in case of an invalid file name.
* A file name is invalid, if it contains a NUL character.
* Attackers might use this to circumvent security checks:
* For example, a malicious user might upload a file with the name
* "foo.exe\0.png". This file name might pass security checks (i.e.
* checks for the extension ".png"), while, depending on the underlying
* C library, it might create a file named "foo.exe", as the NUL
* character is the string terminator in C.
*/
public class InvalidFileNameException extends RuntimeException {
/**
* Serial version UID, being used, if the exception
* is serialized.
*/
private static final long serialVersionUID = 7922042602454350470L;
/**
* The file name causing the exception.
*/
private final String name;
/**
* Creates a new instance.
*
* @param name The file name causing the exception.
* @param message A human readable error message.
*/
public InvalidFileNameException(final String name, final String message) {
super(message);
this.name = name;
}
/**
* Returns the invalid file name.
*
* @return the invalid file name.
*/
public String getName() {
return name;
}
}