AccessControlException when trying WebStart an RCP plugin

Question

Hello!
I have the following scenario: I have an RCP plugin and I would like to be able to run it using WebStart. But unfortunately I get the following exception:
java.security.AccessControlException: access denied (java.util.PropertyPermission eclipse.exitcode write)
at java.security.AccessControlContext.checkPermission(AccessControlContext.java:323)
at java.security.AccessController.checkPermission(AccessController.java:546)
at java.lang.SecurityManager.checkPermission(SecurityManager.java:532)
at org.eclipse.osgi.framework.internal.core.FrameworkProperties.setProperty(FrameworkProperties.java:64)
at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:219)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:549)
at org.eclipse.equinox.launcher.Main.basicRun(Main.java:504)
at org.eclipse.equinox.launcher.WebStartMain.basicRun(WebStartMain.java:73)
at org.eclipse.equinox.launcher.Main.run(Main.java:1236)
at org.eclipse.equinox.launcher.WebStartMain.main(WebStartMain.java:51)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at com.sun.javaws.Launcher.executeApplication(Launcher.java:1421)
at com.sun.javaws.Launcher.executeMainClass(Launcher.java:1367)
at com.sun.javaws.Launcher.doLaunchApp(Launcher.java:1197)
at com.sun.javaws.Launcher.run(Launcher.java:114)
at java.lang.Thread.run(Thread.java:619)
The sad story is that this exception occurs to me (apparently)randomly! That is, sometimes the app starts, while other times it just shows nothing and it only outputs the above-mentioned stacktrace to the log file.
As you can see from the stacktrace, the faulty code is in org.eclipse.osgi.framework.internal.core.FrameworkProperties.setProperty(FrameworkProperties.java:64) which is:
sm.checkPermission(new PropertyPermission(key, "write"));
The class FrameworkProperties is inside org.eclipse.osgi_3.4.2.R34x_v20080826-1230.jar, which I have of course signed and given <all-permissions/> inside the jnlp file.
I have tried to deploy a simple RCP plugin which only displays a simple window. This plugin also packs org.eclipse.osgi_3.4.2.R34x_v20080826-1230.jar, and it works to start it using javaws.
If I give AllPermissions inside $JAVA_HOME/jre/lib/security/javaws.policy it works. So I'm suspecting it's a security configuration problem, but I don't know how/where to get further info on the problem.
Any ideas?
Thanks,
Florin.

Answer 1

shirleymck wrote:
Where can I find an example of how to create a URL for a file that is in the same directory with the applet without hard-coding it?This page from the Swing tutorial is relevant:
http://java.sun.com/docs/books/tutorial/uiswing/components/applet.html#images
The linked code used method getParameter to get values from the HTML page, so that they are not hard-coded into the applet. It used getResourceAsStream to read from a URL, but you can also use the Class method getResource to get a URL.