| /* |
| 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. |
| */ |
| package org.apache.wiki.tags; |
| |
| import java.io.IOException; |
| import java.security.Principal; |
| import java.util.regex.Pattern; |
| |
| import javax.servlet.http.HttpServletRequest; |
| |
| import org.apache.wiki.WikiEngine; |
| import org.apache.wiki.WikiSession; |
| import org.apache.wiki.i18n.InternationalizationManager; |
| import org.apache.wiki.preferences.Preferences; |
| import org.apache.wiki.util.TextUtil; |
| |
| /** |
| * Returns the current user name, or empty, if the user has not been |
| * validated. |
| * |
| * @since 2.0 |
| */ |
| public class UserNameTag extends WikiTagBase |
| { |
| private static final long serialVersionUID = 0L; |
| |
| private static String notStartWithBlankOrColon = "^[^( |:)]"; |
| |
| private static String noColons = "[^:]*"; |
| |
| private static final Pattern VALID_USER_NAME_PATTERN = Pattern.compile(notStartWithBlankOrColon + noColons); |
| |
| public final int doWikiStartTag() throws IOException |
| { |
| WikiEngine engine = this.m_wikiContext.getEngine(); |
| WikiSession wikiSession = WikiSession.getWikiSession(engine, (HttpServletRequest) pageContext.getRequest()); |
| Principal user = wikiSession.getUserPrincipal(); |
| |
| if (user != null) |
| { |
| if (VALID_USER_NAME_PATTERN.matcher(user.getName()).matches()) |
| { |
| pageContext.getOut().print(TextUtil.replaceEntities(user.getName())); |
| } |
| else |
| { |
| pageContext.getOut().print( Preferences.getBundle( m_wikiContext, InternationalizationManager.CORE_BUNDLE ) |
| .getString( "security.user.fullname.invalid" ) ); |
| } |
| } |
| |
| return SKIP_BODY; |
| } |
| } |