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POSigned Java Applet gives AccessControlException when calling from JavaScript
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  1. POSigned Java Applet gives AccessControlException when calling from JavaScript
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    copied!<p>First of all I'm aware that my question is same as <a href="https://stackoverflow.com/questions/1068271/signed-applet-gives-accesscontrolexception-access-denied-when-calling-from-jav">in here</a>. But that question did not helped me.</p> <p>I have self signed applet.</p> <pre><code>jarsigner -verify sJSApplet.jar jar verified. Warning: This jar contains entries whose signer certificate will expire within six months. </code></pre> <p>Applet's purpose is to open MS Word document from LAN machine. So far I've tried opening using <code>Desktop.open()</code> and <code>Runtime.exec()</code>. With <code>AccessController.doPrivileged</code> and without. I always get <code>java.security.AccessControlException: access denied</code>. </p> <p>I'm out of options. What else I could do?</p> <p>I cannot use java.policy file.</p> <p><strong>HTML</strong></p> <pre><code>&lt;html&gt; &lt;head&gt; &lt;script&gt; function openFile( command ) { var applet = "&lt;object type='application/x-java-applet' height='100' width='100' name='jsApplet'&gt;&lt;param name='code' value='com.avacoda.swing.JSApplet'/&gt;&lt;param name='archive' value='sJSApplet.jar' /&gt;&lt;param name='mayscript' value='true'/&gt;&lt;param name='filePath' value='C:\\note.txt'/&gt;Applet failed to run. No Java plug-in was found.&lt;/object&gt;"; var body = document.getElementsByTagName("body")[0]; var div = document.createElement("div"); div.innerHTML = applet; body.appendChild(div); } &lt;/script&gt; &lt;/head&gt; &lt;body&gt; &lt;a href="#" onclick="openFile('C:/note.txt');"&gt;Open file&lt;/a&gt; &lt;/body&gt; &lt;/html&gt; </code></pre> <p><strong>Java code:</strong></p> <pre><code>public class WordApplet extends JApplet { @Override public void init() { openFile(getParameter("filePath")); }; public void openFile(final String path) { AccessController.doPrivileged(new PrivilegedAction&lt;Object&gt;() { @Override public Object run() { try { Runtime.getRuntime().exec("winword " + path); //Desktop.getDesktop().open(new File(path)); } catch (Exception e) { e.printStackTrace(); } return null; } }); } } </code></pre> <p><strong>Full stack trace</strong></p> <pre><code>java.security.AccessControlException: access denied (java.io.FilePermission &lt;&lt;ALL FILES&gt;&gt; execute) at java.security.AccessControlContext.checkPermission(Unknown Source) at java.security.AccessController.checkPermission(Unknown Source) at java.lang.SecurityManager.checkPermission(Unknown Source) at java.lang.SecurityManager.checkExec(Unknown Source) at java.lang.ProcessBuilder.start(Unknown Source) at java.lang.Runtime.exec(Unknown Source) at java.lang.Runtime.exec(Unknown Source) at java.lang.Runtime.exec(Unknown Source) at com.test.applet.JSApplet$1.run(JSApplet.java:34) at java.security.AccessController.doPrivileged(Native Method) at com.avacoda.swing.JSApplet.openFile(JSApplet.java:29) at com.avacoda.swing.JSApplet.init(JSApplet.java:25) at com.sun.deploy.uitoolkit.impl.awt.AWTAppletAdapter.init(Unknown Source) at sun.plugin2.applet.Plugin2Manager$AppletExecutionRunnable.run(Unknown Source) at java.lang.Thread.run(Unknown Source) basic: Applet initialized </code></pre>
 

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