Java Reference
In-Depth Information
class LoadLibrary {
private void loadLibrary() {
AccessController.doPrivileged(
new PrivilegedAction() {
public Object run() {
// Privileged code
System.loadLibrary("myLib.so");
// Perform some sensitive operation like
// setting the default exception handler
MyExceptionReporter.setExceptionReporter(reporter);
return null;
}
});
}
}
final class MyExceptionReporter extends ExceptionReporter {
public void setExceptionReporter(ExceptionReporter reporter) {
SecurityManager sm = System.getSecurityManager();
if(sm != null) {
sm.checkPermission(
new ExceptionReporterPermission("exc.reporter"));
}
// Proceed to set the exception reporter
}
// ... Other methods of MyExceptionReporter
}
final class ExceptionReporterPermission extends BasicPermission
{
public ExceptionReporterPermission(String permName) {
super(permName);
}
// Even though the actions parameter is ignored,
// this constructor has to be defined
public ExceptionReporterPermission(String permName,
String actions) {
super(permName, actions);
}
}
