001: /*
002: * Filter.java
003: *
004: *
005: * Copyright (c) 2003 Rimfaxe ApS (www.rimfaxe.com).
006: * All rights reserved.
007: *
008: * This package is written by Lars Andersen <lars@rimfaxe.com>
009: * and licensed by Rimfaxe ApS.
010: *
011: * Redistribution and use in source and binary forms, with or without
012: * modification, are permitted provided that the following conditions
013: * are met:
014: *
015: * 1. Redistributions of source code must retain the above copyright
016: * notice, this list of conditions and the following disclaimer.
017: *
018: * 2. Redistributions in binary form must reproduce the above copyright
019: * notice, this list of conditions and the following disclaimer in
020: * the documentation and/or other materials provided with the
021: * distribution.
022: *
023: * 3. The end-user documentation included with the redistribution, if
024: * any, must include the following acknowlegement:
025: * "This product includes software developed by Rimfaxe ApS
026: (www.rimfaxe.com)"
027: * Alternately, this acknowlegement may appear in the software itself,
028: * if and wherever such third-party acknowlegements normally appear.
029: *
030: * 4. The names "Rimfaxe", "Rimfaxe Software", "Lars Andersen" and
031: * "Rimfaxe WebServer" must not be used to endorse or promote products
032: * derived from this software without prior written permission. For written
033: * permission, please contact info@rimfaxe.com
034: *
035: * 5. Products derived from this software may not be called "Rimfaxe"
036: * nor may "Rimfaxe" appear in their names without prior written
037: * permission of the Rimfaxe ApS.
038: *
039: * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
040: * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
041: * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
042: * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
043: * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
044: * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
045: * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
046: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
047: * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
048: * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
049: * SUCH DAMAGE.
050: *
051: */
052:
053: package com.rimfaxe.webserver.webapp;
054:
055: import java.util.*;
056:
057: import org.w3c.dom.Attr;
058: import org.w3c.dom.Document;
059: import org.w3c.dom.NamedNodeMap;
060: import org.w3c.dom.Node;
061: import org.w3c.dom.NodeList;
062:
063: import com.rimfaxe.util.*;
064:
065: import com.rimfaxe.webserver.servletapi.RimfaxeFilterConfig;
066: import com.rimfaxe.webserver.WebContext;
067:
068: /**
069: *
070: * @author Lars Andersen
071: */
072: public class Filter {
073:
074: String filtername = "";
075: String filterclass = "";
076:
077: ArrayList params = new ArrayList(10);
078:
079: /** Creates a new instance of Servlet */
080: public Filter(Node node) {
081: traverse(node);
082: }
083:
084: public String getKey() {
085: return filtername;
086: }
087:
088: public String getClassName() {
089: return filterclass;
090: }
091:
092: public Iterator getParameters() {
093: return params.iterator();
094: }
095:
096: public javax.servlet.Filter getInstance(WebContext webcontext) {
097: javax.servlet.Filter filter = null;
098: try {
099: RimfaxeFilterConfig rfc = new RimfaxeFilterConfig(
100: filtername, webcontext.getServletContext(), this );
101: filter = (javax.servlet.Filter) Class.forName(
102: getClassName()).newInstance();
103: filter.init(rfc);
104: } catch (ClassNotFoundException cnfe) {
105: System.out.println("Filter, ClassNotFound : "
106: + getClassName());
107:
108: } catch (Exception e) {
109: System.out.println("Filter, Exception -> " + e);
110: }
111: return filter;
112: }
113:
114: private String traverse(Node node) {
115:
116: StringBuffer str = new StringBuffer();
117:
118: if (node == null) {
119: return "";
120: }
121: int type = node.getNodeType();
122: switch (type) {
123:
124: case Node.DOCUMENT_NODE: {
125: traverse(((Document) node).getDocumentElement());
126: break;
127: }
128:
129: case Node.ELEMENT_NODE: {
130: if (node.getNodeName().equalsIgnoreCase("filter-name")) {
131: NodeList children = node.getChildNodes();
132: if (children != null) {
133: int len = children.getLength();
134: for (int i = 0; i < len; i++) {
135: String val = traverse(children.item(i));
136: filtername = val.trim();
137:
138: }
139: }
140: } else if (node.getNodeName().equalsIgnoreCase(
141: "filter-class")) {
142: NodeList children = node.getChildNodes();
143: if (children != null) {
144: int len = children.getLength();
145: for (int i = 0; i < len; i++) {
146: String val = traverse(children.item(i));
147: filterclass = val.trim();
148: }
149: }
150: } else if (node.getNodeName()
151: .equalsIgnoreCase("init-param")) {
152:
153: InitParameter ip = new InitParameter(node);
154: params.add(ip);
155: } else {
156: NodeList children = node.getChildNodes();
157: if (children != null) {
158: int len = children.getLength();
159: for (int i = 0; i < len; i++) {
160: String val = traverse(children.item(i));
161: }
162: }
163: }
164: break;
165: }
166:
167: case Node.TEXT_NODE: {
168:
169: str.append(node.getNodeValue());
170:
171: break;
172: }
173: }
174: return str.toString();
175: }
176:
177: public String toXML() {
178: StringBuffer buf = new StringBuffer();
179:
180: buf.append(" <filter> \n");
181: buf.append(" <filter-name>" + filtername
182: + "</filter-name> \n");
183: buf.append(" <filter-class>" + filterclass
184: + "</filter-class> \n");
185:
186: Object[] objarray = params.toArray();
187: for (int i = 0; i < objarray.length; i++) {
188: InitParameter ip = (InitParameter) objarray[i];
189: buf.append(ip.toXML());
190: }
191:
192: buf.append(" </filter>\n");
193:
194: return "" + buf;
195: }
196: }
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