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1
19
20 package org.netbeans.modules.java.j2seproject.applet;
21
22 import com.sun.source.tree.CompilationUnitTree;
23 import com.sun.source.tree.Tree;
24 import com.sun.source.util.TreePath;
25 import com.sun.source.util.Trees;
26 import java.io.*;
27 import java.net.*;
28 import java.util.*;
29 import javax.lang.model.element.Modifier;
30 import javax.lang.model.element.TypeElement;
31 import javax.lang.model.element.TypeElement;
32 import javax.lang.model.util.Elements;
33 import javax.lang.model.util.Types;
34 import org.netbeans.api.java.source.CancellableTask;
35 import org.netbeans.api.java.source.CompilationController;
36 import org.netbeans.api.java.source.JavaSource;
37 import org.netbeans.modules.java.j2seproject.J2SEProjectUtil;
38
39 import org.openide.*;
40 import org.openide.modules.SpecificationVersion;
41 import org.openide.filesystems.*;
42 import org.openide.util.*;
43
44 import org.netbeans.api.java.classpath.*;
45 import org.netbeans.spi.java.classpath.support.*;
46 import org.netbeans.api.java.queries.*;
47 import org.netbeans.api.project.*;
48
49 import org.netbeans.api.java.platform.*;
50
51 import org.openide.loaders.*;
52 import org.openide.cookies.*;
53
54
58 public class AppletSupport {
59
60 private static final SpecificationVersion JDK_15 = new SpecificationVersion("1.5");
63
64 private static final String  HTML_EXT = "html";
66 private static final String CLASS_EXT = "class";
68 private final static String POLICY_FILE_NAME = "applet";
69 private final static String POLICY_FILE_EXT = "policy";
70
71 private AppletSupport() {}
72
73 public static Boolean unitTestingSupport_isApplet = null;
76
77 public static boolean isApplet(final FileObject file) {
78 if (file == null) {
79 return false;
80 }
81 if (unitTestingSupport_isApplet != null) {
83 return unitTestingSupport_isApplet.booleanValue();
84 }
85 JavaSource js = JavaSource.forFileObject(file);
86 if (js == null) {
87 return false;
88 }
89 final boolean[] result = new boolean[] {false};
90 try {
91 js.runUserActionTask(new CancellableTask<CompilationController>() {
92
93 public void run(CompilationController control) throws Exception {
94 if (JavaSource.Phase.ELEMENTS_RESOLVED.compareTo(control.toPhase(JavaSource.Phase.ELEMENTS_RESOLVED))<=0) {
95 Elements elements = control.getElements();
96 Trees trees = control.getTrees();
97 Types types = control.getTypes();
98 TypeElement applet = elements.getTypeElement("java.applet.Applet"); TypeElement japplet = elements.getTypeElement("javax.swing.JApplet"); CompilationUnitTree cu = control.getCompilationUnit();
101 List<? extends Tree> topLevels = cu.getTypeDecls();
102 for (Tree topLevel : topLevels) {
103 if (topLevel.getKind() == Tree.Kind.CLASS) {
104 TypeElement type = (TypeElement) trees.getElement(TreePath.getPath(cu, topLevel));
105 if (type != null) {
106 Set<Modifier> modifiers = type.getModifiers();
107 if (modifiers.contains(Modifier.PUBLIC) &&
108 ((applet != null && types.isSubtype(type.asType(), applet.asType()))
109 || (japplet != null && types.isSubtype(type.asType(), japplet.asType())))) {
110 result[0] = true;
111 break;
112 }
113 }
114 }
115 }
116 }
117 }
118
119 public void cancel() {}
120 }, true);
121 } catch (IOException ioe) {
122 Exceptions.printStackTrace(ioe);
123 }
124 return result[0];
125 }
126
127
130 private static FileObject generateHtml(FileObject appletFile, FileObject buildDir, FileObject classesDir) throws IOException {
131 FileObject htmlFile = buildDir.getFileObject(appletFile.getName(), HTML_EXT);
132
133 if (htmlFile == null) {
134 htmlFile = buildDir.createData(appletFile.getName(), HTML_EXT);
135 }
136
137 FileLock lock = htmlFile.lock();
138 PrintWriter writer = null;
139 try {
140 writer = new PrintWriter(htmlFile.getOutputStream(lock));
141 ClassPath cp = ClassPath.getClassPath(appletFile, ClassPath.EXECUTE);
142 ClassPath sp = ClassPath.getClassPath(appletFile, ClassPath.SOURCE);
143 String path = FileUtil.getRelativePath(sp.findOwnerRoot(appletFile), appletFile);
144 path = path.substring(0, path.length()-5);
145 String codebase = FileUtil.getRelativePath(buildDir, classesDir);
146 if (codebase == null) {
147 codebase = classesDir.getURL().toString();
148 }
149 fillInFile(writer, path + "." + CLASS_EXT, "codebase=\"" + codebase + "\""); } finally {
151 lock.releaseLock();
152 if (writer != null)
153 writer.close();
154 }
155 return htmlFile;
156 }
157
158
161 public static FileObject generateSecurityPolicy(FileObject projectDir) {
162
163 FileObject policyFile = projectDir.getFileObject(POLICY_FILE_NAME, POLICY_FILE_EXT);
164
165 try {
166 if (policyFile == null) {
167 policyFile = projectDir.createData(POLICY_FILE_NAME, POLICY_FILE_EXT);
168 }
169 FileLock lock = policyFile.lock();
170 PrintWriter writer = null;
171 try {
172 writer = new PrintWriter(policyFile.getOutputStream(lock));
173 fillInPolicyFile(writer);
174 } finally {
175 lock.releaseLock();
176 if (writer != null)
177 writer.close();
178 }
179 } catch (IOException ioe) {
180 ErrorManager.getDefault().log(ErrorManager.INFORMATIONAL, "Problem when generating applet policy file: " + ioe); }
182 return policyFile;
183 }
184
185
188 public static URL generateHtmlFileURL(FileObject appletFile, FileObject buildDir, FileObject classesDir, String activePlatform) throws FileStateInvalidException {
189 FileObject html = null;
190 IOException ex = null;
191 if ((appletFile == null) || (buildDir == null) || (classesDir == null)) {
192 return null;
193 }
194 try {
195 html = generateHtml(appletFile, buildDir, classesDir);
196 if (html!=null) {
197 return getHTMLPageURL(html, activePlatform);
198 }
199 else {
200 return null;
201 }
202 } catch (IOException iex) {
203 return null;
204 }
205 }
206
207
208
215 public static URL getHTMLPageURL (FileObject htmlFile, String activePlatform) {
216 assert htmlFile != null : "htmlFile cannot be null"; JavaPlatform platform = J2SEProjectUtil.getActivePlatform(activePlatform);
219 boolean workAround6193279 = platform != null && platform.getSpecification().getVersion().compareTo(JDK_15)>=0; URL url = null;
222 if (workAround6193279) {
223 File f = FileUtil.toFile(htmlFile);
224 try {
225 String path = f.getAbsolutePath();
226 if (File.separatorChar != '/') { path = path.replace(File.separatorChar,'/'); }
229 url = new URL ("file",null,path);
230 } catch (MalformedURLException e) {
231 ErrorManager.getDefault().notify(e);
232 }
233 }
234 else {
235 try {
236 url = htmlFile.getURL();
237 } catch (FileStateInvalidException f) {
238 ErrorManager.getDefault().notify(f);
239 }
240 }
241 return url;
242 }
243
244
248 private static void fillInFile(PrintWriter writer, String name, String codebase) {
249 ResourceBundle bundle = NbBundle.getBundle(AppletSupport.class);
250
251 writer.println("<HTML>"); writer.println("<HEAD>");
254 writer.print(" <TITLE>"); writer.print(bundle.getString("GEN_title"));
256 writer.println("</TITLE>");
258 writer.println("</HEAD>"); writer.println("<BODY>\n");
261 writer.print(bundle.getString("GEN_warning"));
262
263 writer.print("<H3><HR WIDTH=\"100%\">"); writer.print(bundle.getString("GEN_header"));
265 writer.println("<HR WIDTH=\"100%\"></H3>\n");
267 writer.println("<P>"); if (codebase == null)
270 writer.print("<APPLET code="); else
272 writer.print("<APPLET " + codebase + " code="); writer.print ("\"");
275 writer.print(name);
276 writer.print ("\"");
278 writer.println(" width=350 height=200></APPLET>"); writer.println("</P>\n");
281 writer.print("<HR WIDTH=\"100%\"><FONT SIZE=-1><I>"); writer.print(bundle.getString("GEN_copy"));
283 writer.println("</I></FONT>");
285 writer.println("</BODY>"); writer.println("</HTML>"); writer.flush();
288 }
289
290
291
292
295 private static void fillInPolicyFile(PrintWriter writer) {
296 writer.println("grant {"); writer.println("permission java.security.AllPermission;"); writer.println("};"); writer.flush();
300 }
301 }
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