001/* 002 * Licensed to the Apache Software Foundation (ASF) under one 003 * or more contributor license agreements. See the NOTICE file 004 * distributed with this work for additional information 005 * regarding copyright ownership. The ASF licenses this file 006 * to you under the Apache License, Version 2.0 (the 007 * "License"); you may not use this file except in compliance 008 * with the License. You may obtain a copy of the License at 009 * 010 * http://www.apache.org/licenses/LICENSE-2.0 011 * 012 * Unless required by applicable law or agreed to in writing, 013 * software distributed under the License is distributed on an 014 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY 015 * KIND, either express or implied. See the License for the 016 * specific language governing permissions and limitations 017 * under the License. 018 */ 019package org.apache.commons.compress.archivers.zip; 020 021import java.util.zip.ZipException; 022 023/** 024 * Handles extra field data that doesn't follow the recommended 025 * pattern for extra fields with a two-byte key and a two-byte length. 026 * 027 * @since 1.19 028 */ 029public interface UnparseableExtraFieldBehavior { 030 /** 031 * Decides what to do with extra field data that doesn't follow the recommended pattern. 032 * 033 * @param data the array of extra field data 034 * @param off offset into data where the unparseable data starts 035 * @param len the length of unparseable data 036 * @param local whether the extra field data stems from the local 037 * file header. If this is false then the data is part if the 038 * central directory header extra data. 039 * @param claimedLength length of the extra field claimed by the 040 * third and forth byte if it did follow the recommended pattern 041 * 042 * @return null if the data should be ignored or an extra field 043 * implementation that represents the data 044 * @throws ZipException if an error occurs or unparseable extra 045 * fields must not be accepted 046 */ 047 ZipExtraField onUnparseableExtraField(byte[] data, int off, int len, boolean local, 048 int claimedLength) throws ZipException; 049}