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1
7 package winstone;
8
9 import java.io.File  ;
10 import java.io.IOException ;
11 import java.net.URL ;
12
13 import javax.xml.parsers.DocumentBuilder ;
14 import javax.xml.parsers.DocumentBuilderFactory ;
15 import javax.xml.parsers.ParserConfigurationException ;
16
17 import org.w3c.dom.Document ;
18 import org.xml.sax.EntityResolver ;
19 import org.xml.sax.ErrorHandler ;
20 import org.xml.sax.InputSource ;
21 import org.xml.sax.SAXException ;
22 import org.xml.sax.SAXParseException ;
23
24
30 public class WebXmlParser implements EntityResolver , ErrorHandler {
31
32 private ClassLoader commonLoader;
33 private boolean rethrowValidationExceptions;
34
35 public WebXmlParser(ClassLoader commonCL) {
36 this.commonLoader = commonCL;
37 this.rethrowValidationExceptions = true;
38 }
39
40 private final static String SCHEMA_SOURCE_PROPERTY = "http://java.sun.com/xml/jaxp/properties/schemaSource";
41
42
47 protected Document parseStreamToXML(File webXmlFile) {
48 DocumentBuilderFactory factory = getBaseDBF();
49
50 URL localXSD25 = this.commonLoader.getResource(LOCAL_ENTITY_TABLE[3][2]);
51 URL localXSD24 = this.commonLoader.getResource(LOCAL_ENTITY_TABLE[2][2]);
52
53 try {
55 factory.setAttribute("http://java.sun.com/xml/jaxp/properties/schemaLanguage",
56 "http://www.w3.org/2001/XMLSchema");
57 if (localXSD25 != null) {
58 factory.setAttribute(SCHEMA_SOURCE_PROPERTY, localXSD25.toString());
59 Logger.log(Logger.FULL_DEBUG, Launcher.RESOURCES, "WebXmlParser.Local25XSDEnabled");
60 } else if (localXSD24 != null) {
61 factory.setAttribute(SCHEMA_SOURCE_PROPERTY, localXSD24.toString());
62 Logger.log(Logger.FULL_DEBUG, Launcher.RESOURCES, "WebXmlParser.Local24XSDEnabled");
63 } else {
64 Logger.log(Logger.WARNING, Launcher.RESOURCES, "WebXmlParser.2524XSDNotFound");
65 }
66 } catch (Throwable err) {
67 Logger.log(Logger.WARNING, Launcher.RESOURCES, "WebXmlParser.NonXSDParser");
69 try {
70 this.rethrowValidationExceptions = false;
71 return parseAsV23Webapp(webXmlFile);
72 } catch (Throwable v23Err) {
73 Logger.log(Logger.ERROR, Launcher.RESOURCES, "WebXmlParser.WebXML23ParseError", v23Err);
74 return null;
75 }
76 }
77
78 try {
80 if (localXSD25 != null) {
81 factory.setAttribute(SCHEMA_SOURCE_PROPERTY, localXSD25.toString());
82 } else {
83 factory.setAttribute(SCHEMA_SOURCE_PROPERTY, null);
84 }
85 DocumentBuilder builder = factory.newDocumentBuilder();
86 builder.setEntityResolver(this);
87 builder.setErrorHandler(this);
88 this.rethrowValidationExceptions = true;
89 return builder.parse(webXmlFile);
90 } catch (Throwable errV25) {
91 try {
92 if (localXSD24 != null) {
94 factory.setAttribute(SCHEMA_SOURCE_PROPERTY, localXSD24.toString());
95 } else {
96 factory.setAttribute(SCHEMA_SOURCE_PROPERTY, null);
97 }
98 DocumentBuilder builder = factory.newDocumentBuilder();
99 builder.setEntityResolver(this);
100 builder.setErrorHandler(this);
101 this.rethrowValidationExceptions = true;
102 return builder.parse(webXmlFile);
103 } catch (Throwable errV24) {
104 try {
106 this.rethrowValidationExceptions = false;
107 return parseAsV23Webapp(webXmlFile);
108 } catch (Throwable errV23) {
109 Logger.log(Logger.ERROR, Launcher.RESOURCES, "WebXmlParser.WebXMLBothErrors");
110 Logger.log(Logger.ERROR, Launcher.RESOURCES, "WebXmlParser.WebXML25ParseError", errV25);
111 Logger.log(Logger.ERROR, Launcher.RESOURCES, "WebXmlParser.WebXML24ParseError", errV24);
112 Logger.log(Logger.ERROR, Launcher.RESOURCES, "WebXmlParser.WebXML23ParseError", errV23);
113 return null;
114 }
115 }
116 }
117 }
118
119 private Document parseAsV23Webapp(File webXmlFile) throws ParserConfigurationException ,
120 SAXException , IOException {
121 DocumentBuilderFactory factory = getBaseDBF();
122 DocumentBuilder builder = factory.newDocumentBuilder();
123 builder.setEntityResolver(this);
124 builder.setErrorHandler(this);
125 return builder.parse(webXmlFile);
126 }
127
128 private DocumentBuilderFactory getBaseDBF() {
129 DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance();
131 factory.setExpandEntityReferences(false);
132 factory.setValidating(true);
133 factory.setNamespaceAware(true);
134 factory.setIgnoringComments(true);
135 factory.setCoalescing(true);
136 factory.setIgnoringElementContentWhitespace(true);
137 return factory;
138 }
139
140
147 private static final String LOCAL_ENTITY_TABLE[][] = {
148 {"-//Sun Microsystems, Inc.//DTD Web Application 2.2//EN", null, "javax/servlet/resources/web-app_2_2.dtd"},
149 {"-//Sun Microsystems, Inc.//DTD Web Application 2.3//EN", null, "javax/servlet/resources/web-app_2_3.dtd"},
150 {null, "http://java.sun.com/xml/ns/j2ee/web-app_2_4.xsd", "javax/servlet/resources/web-app_2_4.xsd"},
151 {null, "http://java.sun.com/xml/ns/j2ee/web-app_2_5.xsd", "javax/servlet/resources/web-app_2_5.xsd"},
152 {null, "http://www.w3.org/2001/xml.xsd", "javax/servlet/resources/xml.xsd"},
153 {"-//W3C//DTD XMLSCHEMA 200102//EN", null, "javax/servlet/resources/XMLSchema.dtd"},
154 {null, "http://www.w3.org/2001/datatypes.dtd", "javax/servlet/resources/datatypes.dtd"},
155 {null, "http://java.sun.com/xml/ns/j2ee/j2ee_1_4.xsd", "javax/servlet/resources/j2ee_1_4.xsd"},
156 {null, "http://java.sun.com/xml/ns/j2ee/javaee_5.xsd", "javax/servlet/resources/javaee_5.xsd"},
157 {null, "http://www.ibm.com/webservices/xsd/j2ee_web_services_client_1_1.xsd", "javax/servlet/resources/j2ee_web_services_client_1_1.xsd"},
158 {null, "http://www.ibm.com/webservices/xsd/j2ee_web_services_client_1_2.xsd", "javax/servlet/resources/javaee_web_services_client_1_2.xsd"}
159 };
160
161
166 public InputSource resolveEntity(String publicName, String url)
167 throws SAXException , IOException {
168 Logger.log(Logger.FULL_DEBUG, Launcher.RESOURCES, "WebXmlParser.ResolvingEntity",
169 new String [] { publicName, url });
170 for (int n = 0; n < LOCAL_ENTITY_TABLE.length; n++) {
171 if (((LOCAL_ENTITY_TABLE[n][0] != null) && (publicName != null) &&
172 publicName.equals(LOCAL_ENTITY_TABLE[n][0])) ||
173 ((LOCAL_ENTITY_TABLE[n][1] != null) && (url != null) &&
174 url.equals(LOCAL_ENTITY_TABLE[n][1]))) {
175 if (this.commonLoader.getResource(LOCAL_ENTITY_TABLE[n][2]) != null) {
176 return getLocalResource(url, LOCAL_ENTITY_TABLE[n][2]);
177 }
178 }
179 }
180 if ((url != null) && url.startsWith("jar:")) {
181 return getLocalResource(url, url.substring(url.indexOf("!/") + 2));
182 } else if ((url != null) && url.startsWith("file:")) {
183 return new InputSource (url);
184 } else {
185 Logger.log(Logger.FULL_DEBUG, Launcher.RESOURCES,
186 "WebXmlParser.NoLocalResource", url);
187 return new InputSource (url);
188 }
189 }
190
191 private InputSource getLocalResource(String url, String local) {
192 if (this.commonLoader.getResource(local) == null)
193 return new InputSource (url);
194 InputSource is = new InputSource (this.commonLoader.getResourceAsStream(local));
195 is.setSystemId(url);
196 return is;
197 }
198
199 public void error(SAXParseException exception) throws SAXException {
200 if (this.rethrowValidationExceptions) {
201 throw exception;
202 } else {
203 Logger.log(Logger.WARNING, Launcher.RESOURCES, "WebXmlParser.XMLParseError",
204 new String [] { exception.getLineNumber() + "",
205 exception.getMessage() });
206 }
207 }
208
209 public void fatalError(SAXParseException exception) throws SAXException {
210 error(exception);
211 }
212
213 public void warning(SAXParseException exception) throws SAXException {
214 Logger.log(Logger.WARNING, Launcher.RESOURCES, "WebXmlParser.XMLParseError",
215 new String [] { exception.getLineNumber() + "",
216 exception.getMessage() });
217 }
218 }
219 |
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