private void loadDefaultCallbackHandler() throws LoginException {
// get the default handler class
try {
final ClassLoader finalLoader = contextClassLoader;
this.callbackHandler =
java.security.AccessController.doPrivileged(
new java.security.PrivilegedExceptionAction<CallbackHandler>() {
public CallbackHandler run() throws Exception {
String defaultHandler = java.security.Security.getProperty(DEFAULT_HANDLER);
if (defaultHandler == null || defaultHandler.length() == 0) return null;
Class<? extends CallbackHandler> c =
Class.forName(defaultHandler, true, finalLoader)
.asSubclass(CallbackHandler.class);
return c.newInstance();
}
});
} catch (java.security.PrivilegedActionException pae) {
throw new LoginException(pae.getException().toString());
}
// secure it with the caller's ACC
if (this.callbackHandler != null && creatorAcc == null) {
this.callbackHandler =
new SecureCallbackHandler(
java.security.AccessController.getContext(), this.callbackHandler);
}
}
/**
* Invokes the login, commit, and logout methods from a LoginModule inside a doPrivileged block
* restricted by creatorAcc (may be null).
*
* <p>This version is called if the caller did not instantiate the LoginContext with a
* Configuration object.
*/
private void invokePriv(final String methodName) throws LoginException {
try {
java.security.AccessController.doPrivileged(
new java.security.PrivilegedExceptionAction<Void>() {
public Void run() throws LoginException {
invoke(methodName);
return null;
}
},
creatorAcc);
} catch (java.security.PrivilegedActionException pae) {
throw (LoginException) pae.getException();
}
}
public void handle(final Callback[] callbacks)
throws java.io.IOException, UnsupportedCallbackException {
try {
java.security.AccessController.doPrivileged(
new java.security.PrivilegedExceptionAction<Void>() {
public Void run() throws java.io.IOException, UnsupportedCallbackException {
ch.handle(callbacks);
return null;
}
},
acc);
} catch (java.security.PrivilegedActionException pae) {
if (pae.getException() instanceof java.io.IOException) {
throw (java.io.IOException) pae.getException();
} else {
throw (UnsupportedCallbackException) pae.getException();
}
}
}