001    /**
002     * Copyright (c) 2000-present Liferay, Inc. All rights reserved.
003     *
004     * This library is free software; you can redistribute it and/or modify it under
005     * the terms of the GNU Lesser General Public License as published by the Free
006     * Software Foundation; either version 2.1 of the License, or (at your option)
007     * any later version.
008     *
009     * This library is distributed in the hope that it will be useful, but WITHOUT
010     * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
011     * FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more
012     * details.
013     */
014    
015    package com.liferay.portal.apache.bridges.struts;
016    
017    import com.liferay.portal.kernel.io.unsync.UnsyncByteArrayInputStream;
018    import com.liferay.portal.kernel.servlet.ServletInputStreamAdapter;
019    import com.liferay.portal.kernel.util.FileUtil;
020    import com.liferay.portal.kernel.util.WebKeys;
021    import com.liferay.portal.struts.StrutsUtil;
022    
023    import java.io.IOException;
024    import java.io.InputStream;
025    
026    import java.util.Collections;
027    import java.util.Enumeration;
028    import java.util.HashMap;
029    import java.util.List;
030    import java.util.Map;
031    import java.util.Vector;
032    
033    import javax.servlet.ServletInputStream;
034    import javax.servlet.http.HttpServletRequest;
035    import javax.servlet.http.HttpServletRequestWrapper;
036    
037    /**
038     * @author Michael Young
039     * @author Deepak Gothe
040     */
041    public class LiferayStrutsRequestImpl extends HttpServletRequestWrapper {
042    
043            public LiferayStrutsRequestImpl(HttpServletRequest request) {
044                    super(request);
045    
046                    Map<String, Object> strutsAttributes =
047                            (Map<String, Object>)request.getAttribute(
048                                    WebKeys.STRUTS_BRIDGES_ATTRIBUTES);
049    
050                    if (strutsAttributes == null) {
051                            strutsAttributes = new HashMap<>();
052    
053                            request.setAttribute(
054                                    WebKeys.STRUTS_BRIDGES_ATTRIBUTES, strutsAttributes);
055                    }
056    
057                    _strutsAttributes = strutsAttributes;
058            }
059    
060            @Override
061            public Object getAttribute(String name) {
062                    Object value = null;
063    
064                    if (name.startsWith(StrutsUtil.STRUTS_PACKAGE) &&
065                            _strutsAttributes.containsKey(name)) {
066    
067                            value = _strutsAttributes.get(name);
068                    }
069                    else {
070                            value = super.getAttribute(name);
071                    }
072    
073                    return value;
074            }
075    
076            @Override
077            public Enumeration<String> getAttributeNames() {
078                    List<String> attributeNames = new Vector<>();
079    
080                    Enumeration<String> enu = super.getAttributeNames();
081    
082                    while (enu.hasMoreElements()) {
083                            String name = enu.nextElement();
084    
085                            if (!name.startsWith(StrutsUtil.STRUTS_PACKAGE)) {
086                                    attributeNames.add(name);
087                            }
088                    }
089    
090                    attributeNames.addAll(_strutsAttributes.keySet());
091    
092                    return Collections.enumeration(attributeNames);
093            }
094    
095            @Override
096            public ServletInputStream getInputStream() throws IOException {
097                    if (_bytes == null) {
098                            InputStream is = super.getInputStream();
099    
100                            _bytes = FileUtil.getBytes(is);
101                    }
102    
103                    return new ServletInputStreamAdapter(
104                            new UnsyncByteArrayInputStream(_bytes));
105            }
106    
107            @Override
108            public void removeAttribute(String name) {
109                    if (name.startsWith(StrutsUtil.STRUTS_PACKAGE) &&
110                            _strutsAttributes.containsKey(name)) {
111    
112                            _strutsAttributes.remove(name);
113                    }
114                    else {
115                            super.removeAttribute(name);
116                    }
117            }
118    
119            @Override
120            public void setAttribute(String name, Object value) {
121                    if (name.startsWith(StrutsUtil.STRUTS_PACKAGE)) {
122                            _strutsAttributes.put(name, value);
123                    }
124                    else {
125                            super.setAttribute(name, value);
126                    }
127            }
128    
129            private byte[] _bytes;
130            private final Map<String, Object> _strutsAttributes;
131    
132    }