001package org.apache.maven.scm.provider.git.gitexe.command;
002
003/*
004 * Licensed to the Apache Software Foundation (ASF) under one
005 * or more contributor license agreements.  See the NOTICE file
006 * distributed with this work for additional information
007 * regarding copyright ownership.  The ASF licenses this file
008 * to you under the Apache License, Version 2.0 (the
009 * "License"); you may not use this file except in compliance
010 * with the License.  You may obtain a copy of the License at
011 *
012 * http://www.apache.org/licenses/LICENSE-2.0
013 *
014 * Unless required by applicable law or agreed to in writing,
015 * software distributed under the License is distributed on an
016 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
017 * KIND, either express or implied.  See the License for the
018 * specific language governing permissions and limitations
019 * under the License.
020 */
021
022import org.codehaus.plexus.util.cli.Commandline;
023
024import java.util.regex.Matcher;
025import java.util.regex.Pattern;
026
027/**
028 * CommandLine extension to mask password
029 * @since 1.9.3
030 */
031public class AnonymousCommandLine
032    extends Commandline
033{
034
035    public static final String PASSWORD_PLACE_HOLDER = "********";
036
037    private Pattern passwordPattern = Pattern.compile( "^.*:(.*)@.*$" );
038
039    /**
040     * Provides an anonymous output to mask password. Considering URL of type :
041     * <<protocol>>://<<user>>:<<password>>@
042     * <<host_definition>>
043     */
044    @Override
045    public String toString()
046    {
047        String output = super.toString();
048        final Matcher passwordMatcher = passwordPattern.matcher( output );
049        if ( passwordMatcher.find() )
050        {
051            // clear password
052            final String clearPassword = passwordMatcher.group( 1 );
053            // to be replaced in output by stars
054            output = output.replace( clearPassword, PASSWORD_PLACE_HOLDER );
055        }
056        return output;
057    }
058}