/*
* JBoss, Home of Professional Open Source.
* Copyright 2014 Red Hat, Inc., and individual contributors
* as indicated by the @author tags.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.wildfly.security.auth;
import javax.security.auth.callback.Callback;
import javax.security.auth.callback.CallbackHandler;
import javax.security.auth.callback.NameCallback;
import javax.security.auth.callback.PasswordCallback;
import javax.security.auth.callback.UnsupportedCallbackException;
import java.io.IOException;
import java.security.Principal;
import org.wildfly.security.evidence.Evidence;
import org.wildfly.security.evidence.PasswordGuessEvidence;
/**
* A custom {@link javax.security.auth.callback.CallbackHandler} used in the JAAS security realm tests. It implements the
* {@code setSecurityInfo} method that has been historically used to polulate custom handlers. Also, its {@code handle}
* implementation will handle any kind of credential by calling {@code toString} and then {@code toCharArray} on the opaque
* object.
*
* @author <a href="mailto:sguilhen@redhat.com">Stefan Guilhen</a>
*/
public class TestCallbackHandler implements CallbackHandler {
private Principal principal;
private Evidence evidence;
public TestCallbackHandler() {
}
/**
* Sets this handler's state.
*
* @param principal the principal being authenticated.
* @param evidence the evidence being verified.
*/
public void setSecurityInfo(final Principal principal, final Object evidence) {
this.principal = principal;
this.evidence = (Evidence) evidence;
}
@Override
public void handle(Callback[] callbacks) throws IOException, UnsupportedCallbackException {
if (callbacks == null)
throw new IllegalArgumentException("The callbacks argument cannot be null");
for (Callback callback : callbacks) {
if (callback instanceof NameCallback) {
NameCallback nameCallback = (NameCallback) callback;
if (principal != null)
nameCallback.setName(this.principal.getName());
}
else if (callback instanceof PasswordCallback) {
PasswordCallback passwordCallback = (PasswordCallback) callback;
if (this.evidence instanceof PasswordGuessEvidence) {
passwordCallback.setPassword(((PasswordGuessEvidence) this.evidence).getGuess());
}
}
else {
throw new UnsupportedCallbackException(callback, "Unsupported callback");
}
}
}
}