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1   package org.apache.maven.plugins.deploy;
2   
3   /*
4    * Licensed to the Apache Software Foundation (ASF) under one
5    * or more contributor license agreements.  See the NOTICE file
6    * distributed with this work for additional information
7    * regarding copyright ownership.  The ASF licenses this file
8    * to you under the Apache License, Version 2.0 (the
9    * "License"); you may not use this file except in compliance
10   * with the License.  You may obtain a copy of the License at
11   *
12   *   http://www.apache.org/licenses/LICENSE-2.0
13   *
14   * Unless required by applicable law or agreed to in writing,
15   * software distributed under the License is distributed on an
16   * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
17   * KIND, either express or implied.  See the License for the
18   * specific language governing permissions and limitations
19   * under the License.
20   */
21  
22  import java.io.File;
23  import java.io.IOException;
24  import java.util.Arrays;
25  import java.util.List;
26  import java.util.Map;
27  
28  import org.apache.maven.plugin.MojoExecutionException;
29  import org.eclipse.aether.util.ChecksumUtils;
30  
31  /**
32   * A utility class to assist testing.
33   *
34   * @author Benjamin Bentmann
35   */
36  public class Utils
37  {
38  
39      public static final List<String> CHECKSUM_ALGORITHMS = Arrays.asList( "MD5", "SHA-1" );
40  
41      /**
42       * Verifies the checksum files in the local repo for the given file.
43       *
44       * @param file The file to verify its checksum with, must not be <code>null</code>.
45       * @throws MojoExecutionException In case the checksums were incorrect.
46       * @throws IOException If the files couldn't be read.
47       */
48      public static void verifyChecksum( File file )
49          throws MojoExecutionException, IOException
50      {
51          Map<String, Object> checksums = ChecksumUtils.calc( file, CHECKSUM_ALGORITHMS );
52          for ( Map.Entry<String, Object> entry : checksums.entrySet() )
53          {
54              File cksumFile = new File( file + "." + entry.getKey().toLowerCase().replace( "-", "" ) );
55              String actualChecksum = ChecksumUtils.read( cksumFile );
56              if ( !actualChecksum.equals( entry.getValue() ) )
57              {
58                  throw new MojoExecutionException( "Incorrect " + entry.getKey() + " checksum for file: " + file );
59              }
60          }
61      }
62  
63  }