| package org.apache.archiva.checksum; |
| |
| /* |
| * 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. |
| */ |
| |
| |
| import org.apache.commons.io.FilenameUtils; |
| |
| import java.nio.file.Path; |
| import java.util.Arrays; |
| import java.util.HashMap; |
| import java.util.List; |
| import java.util.Map; |
| import java.util.Set; |
| |
| /** |
| * Enumeration of available ChecksumAlgorithm techniques. |
| * |
| * Each algorithm represents a message digest algorithm and has a unique type. |
| * The type string may be used in the hash files (FreeBSD and OpenSSL add the type to the hash file) |
| * |
| * There are multiple file extensions. The first one is considered the default extension. |
| * |
| */ |
| public enum ChecksumAlgorithm { |
| MD5("MD5", "MD5", "md5"), |
| SHA1("SHA-1", "SHA1", "sha1", "sha128", "sha-128"), |
| SHA256("SHA-256", "SHA256", "sha256", "sha2", "sha-256"), |
| SHA384("SHA-384", "SHA384", "sha384", "sha3", "sha-384"), |
| SHA512("SHA-512", "SHA512", "sha512", "sha5", "sha-512"), |
| ASC("ASC", "ASC", "asc"); |
| |
| public static ChecksumAlgorithm getByExtension( Path file ) |
| { |
| String ext = FilenameUtils.getExtension( file.getFileName().toString() ).toLowerCase(); |
| if (extensionMap.containsKey(ext)) { |
| return extensionMap.get(ext); |
| } |
| throw new IllegalArgumentException( "Filename " + file.getFileName() + " has no valid extension." ); |
| } |
| |
| private static final Map<String, ChecksumAlgorithm> extensionMap = new HashMap<>( ); |
| |
| static { |
| for (ChecksumAlgorithm alg : ChecksumAlgorithm.values()) { |
| for (String extString : alg.getExt()) |
| { |
| extensionMap.put( extString.toLowerCase(), alg ); |
| } |
| } |
| } |
| |
| public static Set<String> getAllExtensions() { |
| return extensionMap.keySet(); |
| } |
| |
| /** |
| * The MessageDigest algorithm for this hash. |
| */ |
| private final String algorithm; |
| |
| /** |
| * The file extensions for this ChecksumAlgorithm. |
| */ |
| private final List<String> ext; |
| |
| /** |
| * The checksum type, the key that you see in checksum files. |
| */ |
| private final String type; |
| |
| /** |
| * Construct a ChecksumAlgorithm |
| * |
| * @param algorithm the MessageDigest algorithm |
| * @param type a unique identifier for the type |
| * @param ext the list of file extensions |
| */ |
| private ChecksumAlgorithm( String algorithm, String type, String... ext ) |
| { |
| this.algorithm = algorithm; |
| this.ext = Arrays.asList( ext ); |
| this.type = type; |
| |
| } |
| |
| /** |
| * Returns the message digest algorithm identifier |
| * @return |
| */ |
| public String getAlgorithm() |
| { |
| return algorithm; |
| } |
| |
| /** |
| * Returns the list of extensions |
| * @return |
| */ |
| public List<String> getExt() |
| { |
| return ext; |
| } |
| |
| /** |
| * Returns the checksum identifier |
| * @return |
| */ |
| public String getType() |
| { |
| return type; |
| } |
| |
| /** |
| * Returns the default extension of the current algorithm |
| * @return |
| */ |
| public String getDefaultExtension() { |
| return ext.get(0); |
| } |
| |
| |
| } |