spring security WebSecurity 源码
spring security WebSecurity 代码
文件路径：/config/src/main/java/org/springframework/security/config/annotation/web/builders/WebSecurity.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.builders;
import java.util.ArrayList;
import java.util.List;
import jakarta.servlet.Filter;
import jakarta.servlet.ServletContext;
import jakarta.servlet.http.HttpServletRequest;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.springframework.beans.BeansException;
import org.springframework.beans.factory.NoSuchBeanDefinitionException;
import org.springframework.context.ApplicationContext;
import org.springframework.context.ApplicationContextAware;
import org.springframework.http.HttpMethod;
import org.springframework.security.access.PermissionEvaluator;
import org.springframework.security.access.expression.SecurityExpressionHandler;
import org.springframework.security.access.hierarchicalroles.RoleHierarchy;
import org.springframework.security.authorization.AuthorizationManager;
import org.springframework.security.config.annotation.AbstractConfiguredSecurityBuilder;
import org.springframework.security.config.annotation.ObjectPostProcessor;
import org.springframework.security.config.annotation.SecurityBuilder;
import org.springframework.security.config.annotation.web.AbstractRequestMatcherRegistry;
import org.springframework.security.config.annotation.web.WebSecurityConfigurer;
import org.springframework.security.config.annotation.web.configuration.EnableWebSecurity;
import org.springframework.security.config.annotation.web.configuration.WebSecurityConfiguration;
import org.springframework.security.config.annotation.web.configuration.WebSecurityCustomizer;
import org.springframework.security.core.context.SecurityContext;
import org.springframework.security.web.DefaultSecurityFilterChain;
import org.springframework.security.web.FilterChainProxy;
import org.springframework.security.web.FilterInvocation;
import org.springframework.security.web.SecurityFilterChain;
import org.springframework.security.web.access.AuthorizationManagerWebInvocationPrivilegeEvaluator;
import org.springframework.security.web.access.DefaultWebInvocationPrivilegeEvaluator;
import org.springframework.security.web.access.RequestMatcherDelegatingWebInvocationPrivilegeEvaluator;
import org.springframework.security.web.access.WebInvocationPrivilegeEvaluator;
import org.springframework.security.web.access.expression.DefaultWebSecurityExpressionHandler;
import org.springframework.security.web.access.intercept.AuthorizationFilter;
import org.springframework.security.web.access.intercept.FilterSecurityInterceptor;
import org.springframework.security.web.debug.DebugFilter;
import org.springframework.security.web.firewall.HttpFirewall;
import org.springframework.security.web.firewall.RequestRejectedHandler;
import org.springframework.security.web.firewall.StrictHttpFirewall;
import org.springframework.security.web.servlet.util.matcher.MvcRequestMatcher;
import org.springframework.security.web.util.matcher.RequestMatcher;
import org.springframework.security.web.util.matcher.RequestMatcherEntry;
import org.springframework.util.Assert;
import org.springframework.web.context.ServletContextAware;
import org.springframework.web.filter.DelegatingFilterProxy;
/**
* <p>
* The {@link WebSecurity} is created by {@link WebSecurityConfiguration} to create the
* {@link FilterChainProxy} known as the Spring Security Filter Chain
* (springSecurityFilterChain). The springSecurityFilterChain is the {@link Filter} that
* the {@link DelegatingFilterProxy} delegates to.
* </p>
*
* <p>
* Customizations to the {@link WebSecurity} can be made by creating a
* {@link WebSecurityConfigurer} or exposing a {@link WebSecurityCustomizer} bean.
* </p>
*
* @author Rob Winch
* @author Evgeniy Cheban
* @since 3.2
* @see EnableWebSecurity
* @see WebSecurityConfiguration
*/
public final class WebSecurity extends AbstractConfiguredSecurityBuilder<Filter, WebSecurity>
implements SecurityBuilder<Filter>, ApplicationContextAware, ServletContextAware {
private final Log logger = LogFactory.getLog(getClass());
private final List<RequestMatcher> ignoredRequests = new ArrayList<>();
private final List<SecurityBuilder<? extends SecurityFilterChain>> securityFilterChainBuilders = new ArrayList<>();
private IgnoredRequestConfigurer ignoredRequestRegistry;
private HttpFirewall httpFirewall;
private RequestRejectedHandler requestRejectedHandler;
private boolean debugEnabled;
private WebInvocationPrivilegeEvaluator privilegeEvaluator;
private DefaultWebSecurityExpressionHandler defaultWebSecurityExpressionHandler = new DefaultWebSecurityExpressionHandler();
private SecurityExpressionHandler<FilterInvocation> expressionHandler = this.defaultWebSecurityExpressionHandler;
private Runnable postBuildAction = () -> {
};
private ServletContext servletContext;
/**
* Creates a new instance
* @param objectPostProcessor the {@link ObjectPostProcessor} to use
* @see WebSecurityConfiguration
*/
public WebSecurity(ObjectPostProcessor<Object> objectPostProcessor) {
super(objectPostProcessor);
}
/**
* <p>
* Allows adding {@link RequestMatcher} instances that Spring Security should ignore.
* Web Security provided by Spring Security (including the {@link SecurityContext})
* will not be available on {@link HttpServletRequest} that match. Typically the
* requests that are registered should be that of only static resources. For requests
* that are dynamic, consider mapping the request to allow all users instead.
* </p>
*
* Example Usage:
*
* <pre>
* webSecurityBuilder.ignoring()
* // ignore all URLs that start with /resources/ or /static/
* .antMatchers("/resources/**", "/static/**");
* </pre>
*
* Alternatively this will accomplish the same result:
*
* <pre>
* webSecurityBuilder.ignoring()
* // ignore all URLs that start with /resources/ or /static/
* .antMatchers("/resources/**").antMatchers("/static/**");
* </pre>
*
* Multiple invocations of ignoring() are also additive, so the following is also
* equivalent to the previous two examples:
*
* <pre>
* webSecurityBuilder.ignoring()
* // ignore all URLs that start with /resources/
* .antMatchers("/resources/**");
* webSecurityBuilder.ignoring()
* // ignore all URLs that start with /static/
* .antMatchers("/static/**");
* // now both URLs that start with /resources/ and /static/ will be ignored
* </pre>
* @return the {@link IgnoredRequestConfigurer} to use for registering request that
* should be ignored
*/
public IgnoredRequestConfigurer ignoring() {
return this.ignoredRequestRegistry;
}
/**
* Allows customizing the {@link HttpFirewall}. The default is
* {@link StrictHttpFirewall}.
* @param httpFirewall the custom {@link HttpFirewall}
* @return the {@link WebSecurity} for further customizations
*/
public WebSecurity httpFirewall(HttpFirewall httpFirewall) {
this.httpFirewall = httpFirewall;
return this;
}
/**
* Controls debugging support for Spring Security.
* @param debugEnabled if true, enables debug support with Spring Security. Default is
* false.
* @return the {@link WebSecurity} for further customization.
* @see EnableWebSecurity#debug()
*/
public WebSecurity debug(boolean debugEnabled) {
this.debugEnabled = debugEnabled;
return this;
}
/**
* <p>
* Adds builders to create {@link SecurityFilterChain} instances.
* </p>
*
* <p>
* Typically this method is invoked automatically within the framework from
* {@link WebSecurityConfiguration#springSecurityFilterChain()}
* </p>
* @param securityFilterChainBuilder the builder to use to create the
* {@link SecurityFilterChain} instances
* @return the {@link WebSecurity} for further customizations
*/
public WebSecurity addSecurityFilterChainBuilder(
SecurityBuilder<? extends SecurityFilterChain> securityFilterChainBuilder) {
this.securityFilterChainBuilders.add(securityFilterChainBuilder);
return this;
}
/**
* Set the {@link WebInvocationPrivilegeEvaluator} to be used. If this is not
* specified, then a {@link RequestMatcherDelegatingWebInvocationPrivilegeEvaluator}
* will be created based on the list of {@link SecurityFilterChain}.
* @param privilegeEvaluator the {@link WebInvocationPrivilegeEvaluator} to use
* @return the {@link WebSecurity} for further customizations
*/
public WebSecurity privilegeEvaluator(WebInvocationPrivilegeEvaluator privilegeEvaluator) {
this.privilegeEvaluator = privilegeEvaluator;
return this;
}
/**
* Set the {@link SecurityExpressionHandler} to be used. If this is not specified,
* then a {@link DefaultWebSecurityExpressionHandler} will be used.
* @param expressionHandler the {@link SecurityExpressionHandler} to use
* @return the {@link WebSecurity} for further customizations
*/
public WebSecurity expressionHandler(SecurityExpressionHandler<FilterInvocation> expressionHandler) {
Assert.notNull(expressionHandler, "expressionHandler cannot be null");
this.expressionHandler = expressionHandler;
return this;
}
/**
* Gets the {@link SecurityExpressionHandler} to be used.
* @return the {@link SecurityExpressionHandler} for further customizations
*/
public SecurityExpressionHandler<FilterInvocation> getExpressionHandler() {
return this.expressionHandler;
}
/**
* Gets the {@link WebInvocationPrivilegeEvaluator} to be used.
* @return the {@link WebInvocationPrivilegeEvaluator} for further customizations
*/
public WebInvocationPrivilegeEvaluator getPrivilegeEvaluator() {
return this.privilegeEvaluator;
}
/**
* Executes the Runnable immediately after the build takes place
* @param postBuildAction
* @return the {@link WebSecurity} for further customizations
*/
public WebSecurity postBuildAction(Runnable postBuildAction) {
this.postBuildAction = postBuildAction;
return this;
}
/**
* Sets the handler to handle
* {@link org.springframework.security.web.firewall.RequestRejectedException}
* @param requestRejectedHandler
* @return the {@link WebSecurity} for further customizations
* @since 5.7
*/
public WebSecurity requestRejectedHandler(RequestRejectedHandler requestRejectedHandler) {
Assert.notNull(requestRejectedHandler, "requestRejectedHandler cannot be null");
this.requestRejectedHandler = requestRejectedHandler;
return this;
}
@Override
protected Filter performBuild() throws Exception {
Assert.state(!this.securityFilterChainBuilders.isEmpty(),
() -> "At least one SecurityBuilder<? extends SecurityFilterChain> needs to be specified. "
+ "Typically this is done by exposing a SecurityFilterChain bean. "
+ "More advanced users can invoke " + WebSecurity.class.getSimpleName()
+ ".addSecurityFilterChainBuilder directly");
int chainSize = this.ignoredRequests.size() + this.securityFilterChainBuilders.size();
List<SecurityFilterChain> securityFilterChains = new ArrayList<>(chainSize);
List<RequestMatcherEntry<List<WebInvocationPrivilegeEvaluator>>> requestMatcherPrivilegeEvaluatorsEntries = new ArrayList<>();
for (RequestMatcher ignoredRequest : this.ignoredRequests) {
WebSecurity.this.logger.warn("You are asking Spring Security to ignore " + ignoredRequest
+ ". This is not recommended -- please use permitAll via HttpSecurity#authorizeHttpRequests instead.");
SecurityFilterChain securityFilterChain = new DefaultSecurityFilterChain(ignoredRequest);
securityFilterChains.add(securityFilterChain);
requestMatcherPrivilegeEvaluatorsEntries
.add(getRequestMatcherPrivilegeEvaluatorsEntry(securityFilterChain));
}
for (SecurityBuilder<? extends SecurityFilterChain> securityFilterChainBuilder : this.securityFilterChainBuilders) {
SecurityFilterChain securityFilterChain = securityFilterChainBuilder.build();
securityFilterChains.add(securityFilterChain);
requestMatcherPrivilegeEvaluatorsEntries
.add(getRequestMatcherPrivilegeEvaluatorsEntry(securityFilterChain));
}
if (this.privilegeEvaluator == null) {
this.privilegeEvaluator = new RequestMatcherDelegatingWebInvocationPrivilegeEvaluator(
requestMatcherPrivilegeEvaluatorsEntries);
}
FilterChainProxy filterChainProxy = new FilterChainProxy(securityFilterChains);
if (this.httpFirewall != null) {
filterChainProxy.setFirewall(this.httpFirewall);
}
if (this.requestRejectedHandler != null) {
filterChainProxy.setRequestRejectedHandler(this.requestRejectedHandler);
}
filterChainProxy.afterPropertiesSet();
Filter result = filterChainProxy;
if (this.debugEnabled) {
this.logger.warn("\n\n" + "********************************************************************\n"
+ "********** Security debugging is enabled. *************\n"
+ "********** This may include sensitive information. *************\n"
+ "********** Do not use in a production system! *************\n"
+ "********************************************************************\n\n");
result = new DebugFilter(filterChainProxy);
}
this.postBuildAction.run();
return result;
}
private RequestMatcherEntry<List<WebInvocationPrivilegeEvaluator>> getRequestMatcherPrivilegeEvaluatorsEntry(
SecurityFilterChain securityFilterChain) {
List<WebInvocationPrivilegeEvaluator> privilegeEvaluators = new ArrayList<>();
for (Filter filter : securityFilterChain.getFilters()) {
if (filter instanceof FilterSecurityInterceptor) {
DefaultWebInvocationPrivilegeEvaluator defaultWebInvocationPrivilegeEvaluator = new DefaultWebInvocationPrivilegeEvaluator(
(FilterSecurityInterceptor) filter);
defaultWebInvocationPrivilegeEvaluator.setServletContext(this.servletContext);
privilegeEvaluators.add(defaultWebInvocationPrivilegeEvaluator);
continue;
}
if (filter instanceof AuthorizationFilter) {
AuthorizationManager<HttpServletRequest> authorizationManager = ((AuthorizationFilter) filter)
.getAuthorizationManager();
AuthorizationManagerWebInvocationPrivilegeEvaluator evaluator = new AuthorizationManagerWebInvocationPrivilegeEvaluator(
authorizationManager);
evaluator.setServletContext(this.servletContext);
privilegeEvaluators.add(evaluator);
}
}
return new RequestMatcherEntry<>(securityFilterChain::matches, privilegeEvaluators);
}
@Override
public void setApplicationContext(ApplicationContext applicationContext) throws BeansException {
this.defaultWebSecurityExpressionHandler.setApplicationContext(applicationContext);
try {
this.defaultWebSecurityExpressionHandler.setRoleHierarchy(applicationContext.getBean(RoleHierarchy.class));
}
catch (NoSuchBeanDefinitionException ex) {
}
try {
this.defaultWebSecurityExpressionHandler
.setPermissionEvaluator(applicationContext.getBean(PermissionEvaluator.class));
}
catch (NoSuchBeanDefinitionException ex) {
}
this.ignoredRequestRegistry = new IgnoredRequestConfigurer(applicationContext);
try {
this.httpFirewall = applicationContext.getBean(HttpFirewall.class);
}
catch (NoSuchBeanDefinitionException ex) {
}
try {
this.requestRejectedHandler = applicationContext.getBean(RequestRejectedHandler.class);
}
catch (NoSuchBeanDefinitionException ex) {
}
}
@Override
public void setServletContext(ServletContext servletContext) {
this.servletContext = servletContext;
}
/**
* An {@link IgnoredRequestConfigurer} that allows optionally configuring the
* {@link MvcRequestMatcher#setMethod(HttpMethod)}
*
* @author Rob Winch
*/
public final class MvcMatchersIgnoredRequestConfigurer extends IgnoredRequestConfigurer {
private final List<MvcRequestMatcher> mvcMatchers;
private MvcMatchersIgnoredRequestConfigurer(ApplicationContext context, List<MvcRequestMatcher> mvcMatchers) {
super(context);
this.mvcMatchers = mvcMatchers;
}
public IgnoredRequestConfigurer servletPath(String servletPath) {
for (MvcRequestMatcher matcher : this.mvcMatchers) {
matcher.setServletPath(servletPath);
}
return this;
}
}
/**
* Allows registering {@link RequestMatcher} instances that should be ignored by
* Spring Security.
*
* @author Rob Winch
* @since 3.2
*/
public class IgnoredRequestConfigurer extends AbstractRequestMatcherRegistry<IgnoredRequestConfigurer> {
IgnoredRequestConfigurer(ApplicationContext context) {
setApplicationContext(context);
}
@Override
public MvcMatchersIgnoredRequestConfigurer mvcMatchers(HttpMethod method, String... mvcPatterns) {
List<MvcRequestMatcher> mvcMatchers = createMvcMatchers(method, mvcPatterns);
WebSecurity.this.ignoredRequests.addAll(mvcMatchers);
return new MvcMatchersIgnoredRequestConfigurer(getApplicationContext(), mvcMatchers);
}
@Override
public MvcMatchersIgnoredRequestConfigurer mvcMatchers(String... mvcPatterns) {
return mvcMatchers(null, mvcPatterns);
}
@Override
protected IgnoredRequestConfigurer chainRequestMatchers(List<RequestMatcher> requestMatchers) {
WebSecurity.this.ignoredRequests.addAll(requestMatchers);
return this;
}
/**
* Returns the {@link WebSecurity} to be returned for chaining.
*/
public WebSecurity and() {
return WebSecurity.this;
}
}
}
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