org.springframework.social.showcase.signin.SignInUtils.java Source code

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Here is the source code for org.springframework.social.showcase.signin.SignInUtils.java

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/*
 * Copyright 2011 the original author or authors.
 *
 * 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.springframework.social.showcase.signin;

import org.springframework.security.authentication.UsernamePasswordAuthenticationToken;
import org.springframework.security.core.Authentication;
import org.springframework.security.core.GrantedAuthority;
import org.springframework.security.core.context.SecurityContextHolder;

import com.google.common.base.Function;
import com.google.common.collect.Iterables;
import com.google.common.collect.Lists;
import com.google.common.collect.Sets;

public class SignInUtils {

    /**
     * Programmatically signs in the user with the given the user ID.
     */
    public static void signin(String userId) {
        SecurityContextHolder.getContext()
                .setAuthentication(new UsernamePasswordAuthenticationToken(userId, null, null));
    }

    public static boolean isSignedIn() {
        Authentication authentication = SecurityContextHolder.getContext().getAuthentication();
        if (authentication == null) {
            return false;
        }

        Iterable<String> authorities = Iterables.transform(authentication.getAuthorities(), authorityName);

        return Iterables.contains(authorities, "ROLE_USER");
    }

    private static Function<GrantedAuthority, String> authorityName = new Function<GrantedAuthority, String>() {
        @Override
        public String apply(GrantedAuthority input) {
            return input.getAuthority();
        }
    };

}