| package org.apache.maven.plugin.install; |
| |
| /* |
| * 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.codec.binary.Hex; |
| import org.apache.maven.plugin.MojoExecutionException; |
| import org.codehaus.plexus.util.IOUtil; |
| import org.codehaus.plexus.util.StringUtils; |
| |
| import java.io.*; |
| import java.security.MessageDigest; |
| import java.util.regex.Matcher; |
| import java.util.regex.Pattern; |
| |
| /** |
| * @author Kristian Rosenvold |
| */ |
| public class SimpleDigester |
| { |
| |
| private final MessageDigest messageDigest; |
| |
| private static final int bufsize = 65536; |
| |
| public SimpleDigester( String algorithm ) |
| { |
| messageDigest = DualDigester.getDigester( algorithm ); |
| } |
| |
| public static SimpleDigester md5() |
| { |
| return new SimpleDigester( "MD5" ); |
| } |
| |
| public static SimpleDigester sha1() |
| { |
| return new SimpleDigester( "SHA-1" ); |
| } |
| |
| public String calculate( File file ) |
| throws MojoExecutionException |
| { |
| FileInputStream fis = null; |
| BufferedInputStream bis = null; |
| |
| try |
| { |
| fis = new FileInputStream( file ); |
| int bufsiz = (int) Math.min( file.length(), bufsize ); |
| bis = new BufferedInputStream( fis, bufsiz ); |
| messageDigest.reset(); |
| update( bis ); |
| return Hex.encodeHexString( messageDigest.digest() ); |
| } |
| catch ( IOException e ) |
| { |
| throw new MojoExecutionException( |
| "Failed to calculate " + messageDigest.getAlgorithm() + " checksum for " + file, e ); |
| } |
| finally |
| { |
| IOUtil.close( bis ); |
| IOUtil.close( fis ); |
| } |
| } |
| |
| private void update( InputStream is ) |
| throws IOException |
| { |
| byte[] buffer = new byte[bufsize]; |
| int size = is.read( buffer, 0, bufsize ); |
| while ( size >= 0 ) |
| { |
| messageDigest.update( buffer, 0, size ); |
| size = is.read( buffer, 0, bufsize ); |
| } |
| } |
| |
| public void verify( File file, String checksum ) |
| throws MojoExecutionException |
| { |
| String trimmed = cleanChecksum( checksum, messageDigest.getAlgorithm(), file.getName() ); |
| String sum = calculate( file ); |
| if ( !StringUtils.equalsIgnoreCase( trimmed, sum ) ) |
| { |
| throw new RuntimeException( "Checksum failed (expected=" + trimmed + ", actual=" + sum + ")" ); |
| } |
| } |
| |
| private static String cleanChecksum( String checksum, String algorithm, String path ) |
| { |
| String trimmed = checksum.replace( '\n', ' ' ).trim(); |
| |
| // Free-BSD / openssl |
| String regex = algorithm.replaceAll( "-", "" ) + "\\s*\\((.*?)\\)\\s*=\\s*([a-fA-F0-9]+)"; |
| Matcher m = Pattern.compile( regex ).matcher( trimmed ); |
| if ( m.matches() ) |
| { |
| String filename = m.group( 1 ); |
| if ( !isValidChecksumPattern( filename, path ) ) |
| { |
| throw new RuntimeException( "Supplied checksum does not match checksum pattern" ); |
| } |
| trimmed = m.group( 2 ); |
| } |
| else |
| { |
| // GNU tools |
| m = Pattern.compile( "([a-fA-F0-9]+)\\s+\\*?(.+)" ).matcher( trimmed ); |
| if ( m.matches() ) |
| { |
| String filename = m.group( 2 ); |
| if ( !isValidChecksumPattern( filename, path ) ) |
| { |
| throw new RuntimeException( "Supplied checksum does not match checksum pattern" ); |
| } |
| trimmed = m.group( 1 ); |
| } |
| } |
| return trimmed; |
| } |
| |
| private static boolean isValidChecksumPattern( String filename, String path ) |
| { |
| return filename.endsWith( path ) || filename.equals( "-" ); |
| } |
| |
| } |