/*
* Copyright 2002-2016 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.springframework.security.web.header.writers.frameoptions;
import java.util.Collection;
import org.springframework.util.Assert;
/**
* Implementation which checks the supplied origin against a list of allowed origins.
*
* @author Marten Deinum
* @since 3.2
*/
public final class WhiteListedAllowFromStrategy extends
AbstractRequestParameterAllowFromStrategy {
private final Collection<String> allowed;
/**
* Creates a new instance
* @param allowed the origins that are allowed.
*/
public WhiteListedAllowFromStrategy(Collection<String> allowed) {
Assert.notEmpty(allowed, "Allowed origins cannot be empty.");
this.allowed = allowed;
}
@Override
protected boolean allowed(String allowFromOrigin) {
return allowed.contains(allowFromOrigin);
}
}