spring security ExpressionUrlAuthorizationConfigurer 源码
spring security ExpressionUrlAuthorizationConfigurer 代码
文件路径：/config/src/main/java/org/springframework/security/config/annotation/web/configurers/ExpressionUrlAuthorizationConfigurer.java
/*
* Copyright 2002-2021 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.ArrayList;
import java.util.Collection;
import java.util.LinkedHashMap;
import java.util.List;
import org.springframework.context.ApplicationContext;
import org.springframework.http.HttpMethod;
import org.springframework.security.access.AccessDecisionVoter;
import org.springframework.security.access.ConfigAttribute;
import org.springframework.security.access.PermissionEvaluator;
import org.springframework.security.access.SecurityConfig;
import org.springframework.security.access.expression.SecurityExpressionHandler;
import org.springframework.security.access.hierarchicalroles.RoleHierarchy;
import org.springframework.security.authentication.AuthenticationTrustResolver;
import org.springframework.security.config.annotation.ObjectPostProcessor;
import org.springframework.security.config.annotation.web.HttpSecurityBuilder;
import org.springframework.security.config.annotation.web.builders.HttpSecurity;
import org.springframework.security.config.core.GrantedAuthorityDefaults;
import org.springframework.security.web.FilterInvocation;
import org.springframework.security.web.access.expression.DefaultWebSecurityExpressionHandler;
import org.springframework.security.web.access.expression.ExpressionBasedFilterInvocationSecurityMetadataSource;
import org.springframework.security.web.access.expression.WebExpressionVoter;
import org.springframework.security.web.servlet.util.matcher.MvcRequestMatcher;
import org.springframework.security.web.util.matcher.RequestMatcher;
import org.springframework.util.Assert;
import org.springframework.util.StringUtils;
/**
* Adds URL based authorization based upon SpEL expressions to an application. At least
* one {@link org.springframework.web.bind.annotation.RequestMapping} needs to be mapped
* to {@link ConfigAttribute}'s for this {@link SecurityContextConfigurer} to have
* meaning.
* <h2>Security Filters</h2>
*
* The following Filters are populated
*
* <ul>
* <li>{@link org.springframework.security.web.access.intercept.FilterSecurityInterceptor}
* </li>
* </ul>
*
* <h2>Shared Objects Created</h2>
*
* The following shared objects are populated to allow other
* {@link org.springframework.security.config.annotation.SecurityConfigurer}'s to
* customize:
* <ul>
* <li>{@link org.springframework.security.web.access.intercept.FilterSecurityInterceptor}
* </li>
* </ul>
*
* <h2>Shared Objects Used</h2>
*
* <ul>
* <li>{@link AuthenticationTrustResolver} is optionally used to populate the
* {@link DefaultWebSecurityExpressionHandler}</li>
* </ul>
*
* @param <H> the type of {@link HttpSecurityBuilder} that is being configured
* @author Rob Winch
* @author Yanming Zhou
* @since 3.2
* @see org.springframework.security.config.annotation.web.builders.HttpSecurity#authorizeRequests()
*/
public final class ExpressionUrlAuthorizationConfigurer<H extends HttpSecurityBuilder<H>>
extends AbstractInterceptUrlConfigurer<ExpressionUrlAuthorizationConfigurer<H>, H> {
static final String permitAll = "permitAll";
private static final String denyAll = "denyAll";
private static final String anonymous = "anonymous";
private static final String authenticated = "authenticated";
private static final String fullyAuthenticated = "fullyAuthenticated";
private static final String rememberMe = "rememberMe";
private final String rolePrefix;
private final ExpressionInterceptUrlRegistry REGISTRY;
private SecurityExpressionHandler<FilterInvocation> expressionHandler;
/**
* Creates a new instance
* @see HttpSecurity#authorizeRequests()
*/
public ExpressionUrlAuthorizationConfigurer(ApplicationContext context) {
String[] grantedAuthorityDefaultsBeanNames = context.getBeanNamesForType(GrantedAuthorityDefaults.class);
if (grantedAuthorityDefaultsBeanNames.length == 1) {
GrantedAuthorityDefaults grantedAuthorityDefaults = context.getBean(grantedAuthorityDefaultsBeanNames[0],
GrantedAuthorityDefaults.class);
this.rolePrefix = grantedAuthorityDefaults.getRolePrefix();
}
else {
this.rolePrefix = "ROLE_";
}
this.REGISTRY = new ExpressionInterceptUrlRegistry(context);
}
public ExpressionInterceptUrlRegistry getRegistry() {
return this.REGISTRY;
}
/**
* Allows registering multiple {@link RequestMatcher} instances to a collection of
* {@link ConfigAttribute} instances
* @param requestMatchers the {@link RequestMatcher} instances to register to the
* {@link ConfigAttribute} instances
* @param configAttributes the {@link ConfigAttribute} to be mapped by the
* {@link RequestMatcher} instances
*/
private void interceptUrl(Iterable<? extends RequestMatcher> requestMatchers,
Collection<ConfigAttribute> configAttributes) {
for (RequestMatcher requestMatcher : requestMatchers) {
this.REGISTRY.addMapping(
new AbstractConfigAttributeRequestMatcherRegistry.UrlMapping(requestMatcher, configAttributes));
}
}
@Override
@SuppressWarnings("rawtypes")
List<AccessDecisionVoter<?>> getDecisionVoters(H http) {
List<AccessDecisionVoter<?>> decisionVoters = new ArrayList<>();
WebExpressionVoter expressionVoter = new WebExpressionVoter();
expressionVoter.setExpressionHandler(getExpressionHandler(http));
decisionVoters.add(expressionVoter);
return decisionVoters;
}
@Override
ExpressionBasedFilterInvocationSecurityMetadataSource createMetadataSource(H http) {
LinkedHashMap<RequestMatcher, Collection<ConfigAttribute>> requestMap = this.REGISTRY.createRequestMap();
Assert.state(!requestMap.isEmpty(),
"At least one mapping is required (i.e. authorizeRequests().anyRequest().authenticated())");
return new ExpressionBasedFilterInvocationSecurityMetadataSource(requestMap, getExpressionHandler(http));
}
private SecurityExpressionHandler<FilterInvocation> getExpressionHandler(H http) {
if (this.expressionHandler != null) {
return this.expressionHandler;
}
DefaultWebSecurityExpressionHandler defaultHandler = new DefaultWebSecurityExpressionHandler();
AuthenticationTrustResolver trustResolver = http.getSharedObject(AuthenticationTrustResolver.class);
if (trustResolver != null) {
defaultHandler.setTrustResolver(trustResolver);
}
ApplicationContext context = http.getSharedObject(ApplicationContext.class);
if (context != null) {
String[] roleHiearchyBeanNames = context.getBeanNamesForType(RoleHierarchy.class);
if (roleHiearchyBeanNames.length == 1) {
defaultHandler.setRoleHierarchy(context.getBean(roleHiearchyBeanNames[0], RoleHierarchy.class));
}
String[] grantedAuthorityDefaultsBeanNames = context.getBeanNamesForType(GrantedAuthorityDefaults.class);
if (grantedAuthorityDefaultsBeanNames.length == 1) {
GrantedAuthorityDefaults grantedAuthorityDefaults = context
.getBean(grantedAuthorityDefaultsBeanNames[0], GrantedAuthorityDefaults.class);
defaultHandler.setDefaultRolePrefix(grantedAuthorityDefaults.getRolePrefix());
}
String[] permissionEvaluatorBeanNames = context.getBeanNamesForType(PermissionEvaluator.class);
if (permissionEvaluatorBeanNames.length == 1) {
PermissionEvaluator permissionEvaluator = context.getBean(permissionEvaluatorBeanNames[0],
PermissionEvaluator.class);
defaultHandler.setPermissionEvaluator(permissionEvaluator);
}
}
this.expressionHandler = postProcess(defaultHandler);
return this.expressionHandler;
}
private static String hasAnyRole(String rolePrefix, String... authorities) {
String anyAuthorities = StringUtils.arrayToDelimitedString(authorities, "','" + rolePrefix);
return "hasAnyRole('" + rolePrefix + anyAuthorities + "')";
}
private static String hasRole(String rolePrefix, String role) {
Assert.notNull(role, "role cannot be null");
Assert.isTrue(rolePrefix.isEmpty() || !role.startsWith(rolePrefix), () -> "role should not start with '"
+ rolePrefix + "' since it is automatically inserted. Got '" + role + "'");
return "hasRole('" + rolePrefix + role + "')";
}
private static String hasAuthority(String authority) {
return "hasAuthority('" + authority + "')";
}
private static String hasAnyAuthority(String... authorities) {
String anyAuthorities = StringUtils.arrayToDelimitedString(authorities, "','");
return "hasAnyAuthority('" + anyAuthorities + "')";
}
private static String hasIpAddress(String ipAddressExpression) {
return "hasIpAddress('" + ipAddressExpression + "')";
}
public final class ExpressionInterceptUrlRegistry extends
ExpressionUrlAuthorizationConfigurer<H>.AbstractInterceptUrlRegistry<ExpressionInterceptUrlRegistry, AuthorizedUrl> {
private ExpressionInterceptUrlRegistry(ApplicationContext context) {
setApplicationContext(context);
}
@Override
public MvcMatchersAuthorizedUrl mvcMatchers(HttpMethod method, String... mvcPatterns) {
return new MvcMatchersAuthorizedUrl(createMvcMatchers(method, mvcPatterns));
}
@Override
public MvcMatchersAuthorizedUrl mvcMatchers(String... patterns) {
return mvcMatchers(null, patterns);
}
@Override
protected AuthorizedUrl chainRequestMatchersInternal(List<RequestMatcher> requestMatchers) {
return new AuthorizedUrl(requestMatchers);
}
/**
* Allows customization of the {@link SecurityExpressionHandler} to be used. The
* default is {@link DefaultWebSecurityExpressionHandler}
* @param expressionHandler the {@link SecurityExpressionHandler} to be used
* @return the {@link ExpressionUrlAuthorizationConfigurer} for further
* customization.
*/
public ExpressionInterceptUrlRegistry expressionHandler(
SecurityExpressionHandler<FilterInvocation> expressionHandler) {
ExpressionUrlAuthorizationConfigurer.this.expressionHandler = expressionHandler;
return this;
}
/**
* Adds an {@link ObjectPostProcessor} for this class.
* @param objectPostProcessor
* @return the {@link ExpressionUrlAuthorizationConfigurer} for further
* customizations
*/
public ExpressionInterceptUrlRegistry withObjectPostProcessor(ObjectPostProcessor<?> objectPostProcessor) {
addObjectPostProcessor(objectPostProcessor);
return this;
}
public H and() {
return ExpressionUrlAuthorizationConfigurer.this.and();
}
}
/**
* An {@link AuthorizedUrl} that allows optionally configuring the
* {@link MvcRequestMatcher#setMethod(HttpMethod)}
*
* @author Rob Winch
*/
public final class MvcMatchersAuthorizedUrl extends AuthorizedUrl {
/**
* Creates a new instance
* @param requestMatchers the {@link RequestMatcher} instances to map
*/
private MvcMatchersAuthorizedUrl(List<MvcRequestMatcher> requestMatchers) {
super(requestMatchers);
}
public AuthorizedUrl servletPath(String servletPath) {
for (MvcRequestMatcher matcher : (List<MvcRequestMatcher>) getMatchers()) {
matcher.setServletPath(servletPath);
}
return this;
}
}
public class AuthorizedUrl {
private List<? extends RequestMatcher> requestMatchers;
private boolean not;
/**
* Creates a new instance
* @param requestMatchers the {@link RequestMatcher} instances to map
*/
AuthorizedUrl(List<? extends RequestMatcher> requestMatchers) {
this.requestMatchers = requestMatchers;
}
protected List<? extends RequestMatcher> getMatchers() {
return this.requestMatchers;
}
/**
* Negates the following expression.
* @return the {@link ExpressionUrlAuthorizationConfigurer} for further
* customization
*/
public AuthorizedUrl not() {
this.not = true;
return this;
}
/**
* Shortcut for specifying URLs require a particular role. If you do not want to
* have role prefix (default "ROLE_") automatically inserted see
* {@link #hasAuthority(String)}.
* @param role the role to require (i.e. USER, ADMIN, etc). Note, it should not
* start with role prefix as this is automatically inserted.
* @return the {@link ExpressionUrlAuthorizationConfigurer} for further
* customization
*/
public ExpressionInterceptUrlRegistry hasRole(String role) {
return access(ExpressionUrlAuthorizationConfigurer
.hasRole(ExpressionUrlAuthorizationConfigurer.this.rolePrefix, role));
}
/**
* Shortcut for specifying URLs require any of a number of roles. If you do not
* want to have role prefix (default "ROLE_") automatically inserted see
* {@link #hasAnyAuthority(String...)}
* @param roles the roles to require (i.e. USER, ADMIN, etc). Note, it should not
* start with role prefix as this is automatically inserted.
* @return the {@link ExpressionUrlAuthorizationConfigurer} for further
* customization
*/
public ExpressionInterceptUrlRegistry hasAnyRole(String... roles) {
return access(ExpressionUrlAuthorizationConfigurer
.hasAnyRole(ExpressionUrlAuthorizationConfigurer.this.rolePrefix, roles));
}
/**
* Specify that URLs require a particular authority.
* @param authority the authority to require (i.e. ROLE_USER, ROLE_ADMIN, etc).
* @return the {@link ExpressionUrlAuthorizationConfigurer} for further
* customization
*/
public ExpressionInterceptUrlRegistry hasAuthority(String authority) {
return access(ExpressionUrlAuthorizationConfigurer.hasAuthority(authority));
}
/**
* Specify that URLs requires any of a number authorities.
* @param authorities the requests require at least one of the authorities (i.e.
* "ROLE_USER","ROLE_ADMIN" would mean either "ROLE_USER" or "ROLE_ADMIN" is
* required).
* @return the {@link ExpressionUrlAuthorizationConfigurer} for further
* customization
*/
public ExpressionInterceptUrlRegistry hasAnyAuthority(String... authorities) {
return access(ExpressionUrlAuthorizationConfigurer.hasAnyAuthority(authorities));
}
/**
* Specify that URLs requires a specific IP Address or subnet.
* @param ipaddressExpression the ipaddress (i.e. 192.168.1.79) or local subnet
* (i.e. 192.168.0/24)
* @return the {@link ExpressionUrlAuthorizationConfigurer} for further
* customization
*/
public ExpressionInterceptUrlRegistry hasIpAddress(String ipaddressExpression) {
return access(ExpressionUrlAuthorizationConfigurer.hasIpAddress(ipaddressExpression));
}
/**
* Specify that URLs are allowed by anyone.
* @return the {@link ExpressionUrlAuthorizationConfigurer} for further
* customization
*/
public ExpressionInterceptUrlRegistry permitAll() {
return access(permitAll);
}
/**
* Specify that URLs are allowed by anonymous users.
* @return the {@link ExpressionUrlAuthorizationConfigurer} for further
* customization
*/
public ExpressionInterceptUrlRegistry anonymous() {
return access(anonymous);
}
/**
* Specify that URLs are allowed by users that have been remembered.
* @return the {@link ExpressionUrlAuthorizationConfigurer} for further
* customization
* @see RememberMeConfigurer
*/
public ExpressionInterceptUrlRegistry rememberMe() {
return access(rememberMe);
}
/**
* Specify that URLs are not allowed by anyone.
* @return the {@link ExpressionUrlAuthorizationConfigurer} for further
* customization
*/
public ExpressionInterceptUrlRegistry denyAll() {
return access(denyAll);
}
/**
* Specify that URLs are allowed by any authenticated user.
* @return the {@link ExpressionUrlAuthorizationConfigurer} for further
* customization
*/
public ExpressionInterceptUrlRegistry authenticated() {
return access(authenticated);
}
/**
* Specify that URLs are allowed by users who have authenticated and were not
* "remembered".
* @return the {@link ExpressionUrlAuthorizationConfigurer} for further
* customization
* @see RememberMeConfigurer
*/
public ExpressionInterceptUrlRegistry fullyAuthenticated() {
return access(fullyAuthenticated);
}
/**
* Allows specifying that URLs are secured by an arbitrary expression
* @param attribute the expression to secure the URLs (i.e. "hasRole('ROLE_USER')
* and hasRole('ROLE_SUPER')")
* @return the {@link ExpressionUrlAuthorizationConfigurer} for further
* customization
*/
public ExpressionInterceptUrlRegistry access(String attribute) {
if (this.not) {
attribute = "!" + attribute;
}
interceptUrl(this.requestMatchers, SecurityConfig.createList(attribute));
return ExpressionUrlAuthorizationConfigurer.this.REGISTRY;
}
}
}
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