spring security DefaultLoginPageConfigurer 源码
spring security DefaultLoginPageConfigurer 代码
文件路径:/config/src/main/java/org/springframework/security/config/annotation/web/configurers/DefaultLoginPageConfigurer.java
/*
* Copyright 2002-2022 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.config.annotation.web.configurers;
import java.util.Collections;
import java.util.Map;
import jakarta.servlet.http.HttpServletRequest;
import org.springframework.security.config.annotation.web.HttpSecurityBuilder;
import org.springframework.security.config.annotation.web.configuration.EnableWebSecurity;
import org.springframework.security.web.AuthenticationEntryPoint;
import org.springframework.security.web.authentication.ui.DefaultLoginPageGeneratingFilter;
import org.springframework.security.web.authentication.ui.DefaultLogoutPageGeneratingFilter;
import org.springframework.security.web.csrf.CsrfToken;
/**
* Adds a Filter that will generate a login page if one is not specified otherwise when
* using {@link EnableWebSecurity}.
*
* <p>
* By default an
* {@link org.springframework.security.web.access.channel.InsecureChannelProcessor} and a
* {@link org.springframework.security.web.access.channel.SecureChannelProcessor} will be
* registered.
* </p>
*
* <h2>Security Filters</h2>
*
* The following Filters are conditionally populated
*
* <ul>
* <li>{@link DefaultLoginPageGeneratingFilter} if the {@link FormLoginConfigurer} did not
* have a login page specified</li>
* </ul>
*
* <h2>Shared Objects Created</h2>
*
* No shared objects are created. isLogoutRequest
* <h2>Shared Objects Used</h2>
*
* The following shared objects are used:
*
* <ul>
* <li>{@link org.springframework.security.web.PortMapper} is used to create the default
* {@link org.springframework.security.web.access.channel.ChannelProcessor} instances</li>
* <li>{@link FormLoginConfigurer} is used to determine if the
* {@link DefaultLoginPageConfigurer} should be added and how to configure it.</li>
* </ul>
*
* @author Rob Winch
* @since 3.2
* @see EnableWebSecurity
*/
public final class DefaultLoginPageConfigurer<H extends HttpSecurityBuilder<H>>
extends AbstractHttpConfigurer<DefaultLoginPageConfigurer<H>, H> {
private DefaultLoginPageGeneratingFilter loginPageGeneratingFilter = new DefaultLoginPageGeneratingFilter();
private DefaultLogoutPageGeneratingFilter logoutPageGeneratingFilter = new DefaultLogoutPageGeneratingFilter();
@Override
public void init(H http) {
this.loginPageGeneratingFilter.setResolveHiddenInputs(DefaultLoginPageConfigurer.this::hiddenInputs);
this.logoutPageGeneratingFilter.setResolveHiddenInputs(DefaultLoginPageConfigurer.this::hiddenInputs);
http.setSharedObject(DefaultLoginPageGeneratingFilter.class, this.loginPageGeneratingFilter);
}
private Map<String, String> hiddenInputs(HttpServletRequest request) {
CsrfToken token = (CsrfToken) request.getAttribute(CsrfToken.class.getName());
return (token != null) ? Collections.singletonMap(token.getParameterName(), token.getToken())
: Collections.emptyMap();
}
@Override
@SuppressWarnings("unchecked")
public void configure(H http) {
AuthenticationEntryPoint authenticationEntryPoint = null;
ExceptionHandlingConfigurer<?> exceptionConf = http.getConfigurer(ExceptionHandlingConfigurer.class);
if (exceptionConf != null) {
authenticationEntryPoint = exceptionConf.getAuthenticationEntryPoint();
}
if (this.loginPageGeneratingFilter.isEnabled() && authenticationEntryPoint == null) {
this.loginPageGeneratingFilter = postProcess(this.loginPageGeneratingFilter);
http.addFilter(this.loginPageGeneratingFilter);
LogoutConfigurer<H> logoutConfigurer = http.getConfigurer(LogoutConfigurer.class);
if (logoutConfigurer != null) {
http.addFilter(this.logoutPageGeneratingFilter);
}
}
}
}
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