001    /*
002      GRANITE DATA SERVICES
003      Copyright (C) 2012 GRANITE DATA SERVICES S.A.S.
004    
005      This file is part of Granite Data Services.
006    
007      Granite Data Services is free software; you can redistribute it and/or modify
008      it under the terms of the GNU Library General Public License as published by
009      the Free Software Foundation; either version 2 of the License, or (at your
010      option) any later version.
011    
012      Granite Data Services is distributed in the hope that it will be useful, but
013      WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
014      FITNESS FOR A PARTICULAR PURPOSE. See the GNU Library General Public License
015      for more details.
016    
017      You should have received a copy of the GNU Library General Public License
018      along with this library; if not, see <http://www.gnu.org/licenses/>.
019    */
020    
021    package org.granite.client.messaging.channel;
022    
023    import java.io.UnsupportedEncodingException;
024    import java.nio.charset.Charset;
025    
026    import org.granite.util.Base64;
027    
028    /**
029     * @author Franck WOLFF
030     */
031    public final class UsernamePasswordCredentials implements Credentials {
032    
033            private final String username;
034            private final String password;
035            private final Charset charset;
036    
037            public UsernamePasswordCredentials(String username, String password) {
038                    this(username, password, null);
039            }
040    
041            public UsernamePasswordCredentials(String username, String password, Charset charset) {
042                    this.username = username;
043                    this.password = password;
044                    this.charset = (charset != null ? charset : Charset.defaultCharset());
045            }
046    
047            public String getUsername() {
048                    return username;
049            }
050    
051            public String getPassword() {
052                    return password;
053            }
054    
055            public Charset getCharset() {
056                    return charset;
057            }
058            
059            public String encodeBase64() throws UnsupportedEncodingException {
060                    StringBuilder sb = new StringBuilder();
061                    if (username != null) {
062                            if (username.indexOf(':') != -1)
063                                    throw new UnsupportedEncodingException("Username cannot contain ':' characters: " + username);
064                            sb.append(username);
065                    }
066                    sb.append(':');
067                    if (username != null)
068                            sb.append(password);
069                    return Base64.encodeToString(sb.toString().getBytes(charset.name()), false);
070            }
071    
072            @Override
073            public String toString() {
074                    return getClass().getName() + " {username=***, password=***, charset=" + charset + "}";
075            }
076    }