spring security RegExpAllowFromStrategy 源码
spring security RegExpAllowFromStrategy 代码
文件路径：/web/src/main/java/org/springframework/security/web/header/writers/frameoptions/RegExpAllowFromStrategy.java
/*
* 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
*
* https://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.regex.Pattern;
import org.springframework.util.Assert;
/**
* Implementation which uses a regular expression to validate the supplied origin. If the
* value of the HTTP parameter matches the pattern, then the result will be ALLOW-FROM
* <paramter-value>.
*
* @author Marten Deinum
* @since 3.2
* @deprecated ALLOW-FROM is an obsolete directive that no longer works in modern
* browsers. Instead use Content-Security-Policy with the <a href=
* "https://developer.mozilla.org/en-US/docs/Web/HTTP/Headers/Content-Security-Policy/frame-ancestors">frame-ancestors</a>
* directive.
*/
@Deprecated
public final class RegExpAllowFromStrategy extends AbstractRequestParameterAllowFromStrategy {
private final Pattern pattern;
/**
* Creates a new instance
* @param pattern the Pattern to compare against the HTTP parameter value. If the
* pattern matches, the domain will be allowed, else denied.
*/
public RegExpAllowFromStrategy(String pattern) {
Assert.hasText(pattern, "Pattern cannot be empty.");
this.pattern = Pattern.compile(pattern);
}
@Override
protected boolean allowed(String allowFromOrigin) {
return this.pattern.matcher(allowFromOrigin).matches();
}
}
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