org.bremersee.common.security.core.context.RunAsAuthentication.java Source code

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Here is the source code for org.bremersee.common.security.core.context.RunAsAuthentication.java

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/*
 * Copyright 2016 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.bremersee.common.security.core.context;

import org.springframework.security.core.Authentication;
import org.springframework.security.core.GrantedAuthority;
import org.springframework.security.core.authority.SimpleGrantedAuthority;

import java.security.Principal;
import java.util.Collection;
import java.util.LinkedList;

/**
 * <p>
 * An authentication implementation that will be used in the {@link RunAsUtil} class.
 * </p>
 *
 * @author Christian Bremer
 */
public class RunAsAuthentication implements Authentication {

    private static final long serialVersionUID = 1L;

    /**
     * The name of the run as authentication.
     */
    private final String name;

    /**
     * The roles (granted authorities) of the run as authority.
     */
    private final Collection<? extends GrantedAuthority> authorities;

    /**
     * Create an authority with the specified name and no roles (granted authorities).
     *
     * @param name the name
     */
    public RunAsAuthentication(final String name) {
        this.name = name;
        this.authorities = new LinkedList<>();
    }

    /**
     * Create an authority with the specified name and roles (granted authorities).
     *
     * @param name               the name
     * @param grantedAuthorities the roles (granted authorities)
     */
    public RunAsAuthentication(final String name, final String[] grantedAuthorities) {
        this.name = name;
        if (grantedAuthorities == null) {
            authorities = new LinkedList<>();
        } else {
            LinkedList<GrantedAuthority> list = new LinkedList<>();
            for (String ga : grantedAuthorities) {
                list.add(new SimpleGrantedAuthority(ga));
            }
            authorities = list;
        }
    }

    /**
     * Create an authority with the specified name and roles (granted authorities).
     *
     * @param name               the name
     * @param grantedAuthorities the roles (granted authorities)
     */
    public RunAsAuthentication(final String name, final Collection<? extends GrantedAuthority> grantedAuthorities) {
        this.name = name;
        this.authorities = grantedAuthorities == null ? new LinkedList<>() : grantedAuthorities;
    }

    @Override
    public Collection<? extends GrantedAuthority> getAuthorities() {
        return authorities;
    }

    @Override
    public Object getCredentials() {
        return null;
    }

    @Override
    public Object getDetails() {
        return null;
    }

    @Override
    public Object getPrincipal() {
        return new Principal() {
            @Override
            public String toString() {
                return getName();
            }

            @Override
            public String getName() {
                return name;
            }
        };
    }

    @Override
    public boolean isAuthenticated() {
        return true;
    }

    @Override
    public void setAuthenticated(boolean isAuthenticated) throws IllegalArgumentException { // NOSONAR
    }

    @Override
    public String getName() {
        return name;
    }
}