at.ac.univie.isc.asio.security.AuthTools.java Source code

Introduction

Here is the source code for at.ac.univie.isc.asio.security.AuthTools.java

Source

/*
 * #%L
 * asio server
 * %%
 * Copyright (C) 2013 - 2015 Research Group Scientific Computing, University of Vienna
 * %%
 * 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.
 * #L%
 */
package at.ac.univie.isc.asio.security;

import org.springframework.security.core.Authentication;
import org.springframework.security.core.context.SecurityContext;

import javax.annotation.Nonnull;

import static java.util.Objects.requireNonNull;

/**
 * Tools for working with spring security.
 */
public final class AuthTools {
    private AuthTools() {
        /* no instances */ }

    /**
     * Extract the {@link Identity} from the authentication's details if present.
     *
     * @param context spring security context
     * @return the client's identity if one is present
     */
    @Nonnull
    public static Identity findIdentity(@Nonnull final SecurityContext context) {
        requireNonNull(context, "spring security context");
        final Authentication authentication = context.getAuthentication();
        if (authentication != null && authentication.getDetails() instanceof DelegatedCredentialsDetails) {
            final DelegatedCredentialsDetails details = (DelegatedCredentialsDetails) authentication.getDetails();
            return details.getCredentials();
        }
        return Identity.undefined();
    }
}