一、开篇
本篇是《Spring OAuth2 开发指南》系列文章的第二篇,通过代码实例具体介绍 OAuth2 明码模式的开发细节。网络上对于 OAuth2 开发的代码示范非常多而且芜杂,基本上都是官网手册的摘录搬运,或者过多地受制于框架自身如 Spring Security,束缚太多,不足系统性,容易造成同学们云里雾里,以至于生吞活剥。
自己主张在开发落地过程中,既不能齐全本人造轮子,也不应齐全依赖轮子,应该从实质登程,在理清技术原理和细节的条件下,抉择适宜的办法。从这个准则登程,本文将依据“明码模式的典型架构档次和次要流程”(见《Spring OAuth2 开发指南(一)》)中形容的流程节点,展现其代码实现。另外,文章的要点在于后半局部,提出了资源服务器端鉴权/权限管制,和受权服务器端鉴权/权限管制两种实现办法。
须要留神的是 password 模式因为 OAuth2.1 不举荐应用所以只提供旧的组件代码版本,具体请参见 https://datatracker.ietf.org/...
二、 演示案例
咱们持续用相册预览零碎(PAPS,Photo Album Preview System)作为演示案例。
PAPS 是一个社交平台的子系统,与 IBCS 相似,采纳 RESTful API 对外交互,次要性能是容许用户预览本人的相册,以下是 PAPS 演示我的项目的必要服务:
服务名 | 类别 | 形容 | 技术选型
photo-service 外部服务 资源服务器角色,相册预览服务 Spring Boot 开发的 RESTful 服务 idp 外部服务 受权服务器角色,具体指负责认证、受权和鉴权 Spring Boot 开发 demo-h5 内部利用 demo 利用的前端 应用 Postman 代替
为此,咱们将搭建两个工程项目:photo-service 和 idp,客户端用 Postman 代替。
三、 工程构造
接下来演示两个工程项目的框架代码,这部分代码蕴含工程的框架结构、Spring Security 和 OAuth2 的根底配置,尽量采纳最精简的形式书写。其余我的项目能够 copy 这部分代码作为根底模板应用。
photo-service 相册服务
- 根底工程构造
src/main java com.example.demophoto config oauth2 CheckTokenAuthentication.java CheckTokenFilter.java CustomPermissionEvaluator.java CustomRemoteTokenServices.java ResourceServerConfigurer.java service PermisionEvaluatingService.java web PhotoController.java DemoPhotoApplication.java resources applicaton.yaml
- pom.xml
<?xml version="1.0" encoding="UTF-8"?><project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd"> <modelVersion>4.0.0</modelVersion> <parent> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-parent</artifactId> <version>2.3.4.RELEASE</version> <relativePath/> <!-- lookup parent from repository --> </parent> <groupId>com.example</groupId> <artifactId>oauth2-demo-1a-photo-service</artifactId> <version>0.0.1-SNAPSHOT</version> <name>oauth2-demo-1a-photo-service</name> <description>oauth2-demo-1a-photo-service</description> <properties> <java.version>1.8</java.version> </properties> <dependencies> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter</artifactId> </dependency> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-web</artifactId> </dependency> <!-- https://mvnrepository.com/artifact/org.springframework.security.oauth.boot/spring-security-oauth2-autoconfigure --> <dependency> <groupId>org.springframework.security.oauth.boot</groupId> <artifactId>spring-security-oauth2-autoconfigure</artifactId> <version>2.1.2.RELEASE</version> </dependency> </dependencies> <build> <plugins> <plugin> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-maven-plugin</artifactId> </plugin> </plugins> </build></project>
- applicaton.yaml
server: port: 8010security: oauth2: client: clientId: client2 clientSecret: client2p resource: tokenInfoUri: http://127.0.0.1:8000/oauth/check_token
- ResourceServerConfigurer.java
package com.example.demophoto.config.oauth2;import org.springframework.context.annotation.Configuration;import org.springframework.security.config.annotation.web.builders.HttpSecurity;import org.springframework.security.oauth2.config.annotation.web.configuration.EnableResourceServer;import org.springframework.security.oauth2.config.annotation.web.configuration.ResourceServerConfigurerAdapter;import org.springframework.security.oauth2.config.annotation.web.configurers.ResourceServerSecurityConfigurer;@Configuration@EnableResourceServerpublic class ResourceServerConfigurer extends ResourceServerConfigurerAdapter { /** * spring-security-oauth2 组件一般性配置 * * @param resources */ @Override public void configure(ResourceServerSecurityConfigurer resources) { resources.resourceId("demo-1"); } /** * spring-security-oauth2 组件一般性配置 * * @param http * @throws Exception */ @Override public void configure(HttpSecurity http) throws Exception { http.authorizeRequests() .anyRequest().authenticated(); }}
idp 受权服务
- 根底工程构造
src/main java com.example.demoidp config oauth2 AuthorizationServerConfigurer.java CheckTokenInterceptor.java WebSecurityConfig.java service 业务逻辑,如鉴权逻辑 DemoIdpApplication.java resources applicaton.yaml
- pom.xml
<?xml version="1.0" encoding="UTF-8"?><project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd"> <modelVersion>4.0.0</modelVersion> <parent> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-parent</artifactId> <version>2.3.4.RELEASE</version> <relativePath/> <!-- lookup parent from repository --> </parent> <groupId>com.example</groupId> <artifactId>oauth2-demo-1a-idp</artifactId> <version>0.0.1-SNAPSHOT</version> <name>oauth2-demo-1a-idp</name> <description>oauth2-demo-1a-idp</description> <properties> <java.version>1.8</java.version> </properties> <dependencies> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter</artifactId> </dependency> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-web</artifactId> </dependency> <!-- https://mvnrepository.com/artifact/org.springframework.security.oauth/spring-security-oauth2 --> <dependency> <groupId>org.springframework.security.oauth</groupId> <artifactId>spring-security-oauth2</artifactId> <version>2.3.8.RELEASE</version> </dependency> </dependencies> <build> <plugins> <plugin> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-maven-plugin</artifactId> </plugin> </plugins> </build></project>
- applicaton.yaml
server: port: 8000
- AuthorizationServerConfigurer.java
package com.example.demoidp.config.oauth2;import org.springframework.beans.factory.annotation.Autowired;import org.springframework.context.annotation.Bean;import org.springframework.context.annotation.Configuration;import org.springframework.security.authentication.AuthenticationManager;import org.springframework.security.crypto.factory.PasswordEncoderFactories;import org.springframework.security.crypto.password.PasswordEncoder;import org.springframework.security.oauth2.config.annotation.web.configuration.AuthorizationServerConfigurerAdapter;import org.springframework.security.oauth2.config.annotation.web.configuration.EnableAuthorizationServer;import org.springframework.security.oauth2.config.annotation.web.configurers.AuthorizationServerEndpointsConfigurer;import org.springframework.security.oauth2.config.annotation.web.configurers.AuthorizationServerSecurityConfigurer;@Configuration@EnableAuthorizationServerpublic class AuthorizationServerConfigurer extends AuthorizationServerConfigurerAdapter { private AuthenticationManager authenticationManager; /** * spring-security-oauth2 组件一般性配置 * * @param authenticationManager */ @Autowired public AuthorizationServerConfigurer(AuthenticationManager authenticationManager) { this.authenticationManager = authenticationManager; } /** * 配置明码加密办法 */ @Bean PasswordEncoder passwordEncoder() { return PasswordEncoderFactories.createDelegatingPasswordEncoder(); } /** * spring-security-oauth2 组件一般性配置 * * @param endpoints */ @Override public void configure(AuthorizationServerEndpointsConfigurer endpoints) { endpoints.authenticationManager(authenticationManager); } /** * spring-security-oauth2 组件一般性配置 * * @param security */ @Override public void configure(AuthorizationServerSecurityConfigurer security) { security // /oauth/check_token 申请放行 .checkTokenAccess("permitAll()") .passwordEncoder(passwordEncoder()); }}
- WebSecurityConfig.java
package com.example.demoidp.config.oauth2;import org.springframework.context.annotation.Bean;import org.springframework.context.annotation.Configuration;import org.springframework.security.authentication.AuthenticationManager;import org.springframework.security.config.annotation.web.configuration.EnableWebSecurity;import org.springframework.security.config.annotation.web.configuration.WebSecurityConfigurerAdapter;@Configuration@EnableWebSecuritypublic class WebSecurityConfig extends WebSecurityConfigurerAdapter { /** * spring-security-oauth2 组件一般性配置 * * @return AuthenticationManager * @throws Exception */ @Bean @Override public AuthenticationManager authenticationManagerBean() throws Exception { return super.authenticationManagerBean(); }}
四、 代码实现
如图所示,是明码模式的最精简架构档次和次要流程。上面咱们逐渐实现该流程:
一)第一阶段:认证受权阶段
1)用户代理(demo-h5)将用户输出的用户名和明码,发送给客户端(demo-service)
此步骤咱们应用 Postman 执行,这里不开展介绍。
2)客户端(demo-service)将用户输出的用户名和明码,连同 client_id + client_secret (由 idp 调配)一起发送到 idp 以申请令牌,如果 idp 约定了 scope 则还须要带上 scope 参数
此步骤咱们应用 Postman 执行,这里不开展介绍。须要留神的是,Postman 在这里依然是一个 client 角色,client_id 代表的是它本人。申请的 URL 为:
POST http://127.0.0.1:8000/oauth/token
3)idp 首先验证 client_id + client_secret 的合法性,再查看 scope 是否无误,最初验证用户名和明码是否正确,正确则生成 token。这一步也叫“认证”
为了实现这个步骤,咱们在 idp 工程的 AuthorizationServerConfigurer 类中退出以下代码:
- 首先是 client_id + client_secret + scope 的校验
@Configuration@EnableAuthorizationServerpublic class AuthorizationServerConfigurer extends AuthorizationServerConfigurerAdapter { ... /** * 3. [明码模式的典型架构档次和次要流程] 中的第 3 步: * idp 首先验证 client_id + client_secret 的合法性,再查看 scope 是否无误 * * PS: 这里为演示不便,就地创立了账号,生产环境应自行替换成数据库查问等形式 */ private class MockJDBCClientDetailsService implements ClientDetailsService { @Override public ClientDetails loadClientByClientId(String clientId) throws ClientRegistrationException { /** * GrantedAuthority 与 hasAuthority() 关联 */ Set<GrantedAuthority> authorities = new HashSet<>(); authorities.add(new SimpleGrantedAuthority("READ")); authorities.add(new SimpleGrantedAuthority("WRITE")); BaseClientDetails details1 = new BaseClientDetails(); details1.setClientId("client1"); details1.setClientSecret(passwordEncoder().encode("client1p")); details1.setAuthorizedGrantTypes(Arrays.asList("password")); details1.setScope(Arrays.asList("resource:write", "resource:read")); details1.setResourceIds(Arrays.asList("demo-1")); details1.setAuthorities(authorities); BaseClientDetails details2 = new BaseClientDetails(); details2.setClientId("client2"); details2.setClientSecret(passwordEncoder().encode("client2p")); details2.setAuthorizedGrantTypes(Arrays.asList("client_credentials")); details2.setScope(Arrays.asList("resource:write", "resource:read")); details2.setResourceIds(Arrays.asList("demo-1")); details2.setAuthorities(authorities); BaseClientDetails details3 = new BaseClientDetails(); details3.setClientId("client3"); details3.setClientSecret(passwordEncoder().encode("client3p")); details3.setAuthorizedGrantTypes(Arrays.asList("password")); details3.setScope(Arrays.asList("resource:write", "resource:read")); details3.setResourceIds(Arrays.asList("demo-1")); details3.setAuthorities(authorities); Map<String, ClientDetails> clients = new HashMap<>(); clients.put("client1", details1); clients.put("client2", details2); clients.put("client3", details3); if (!clients.containsKey(clientId)) { throw new ClientRegistrationException("Client not found"); } return clients.get(clientId); } } /** * spring-security-oauth2 组件一般性配置 * 配置自定义 ClientDetails * * @param clients * @throws Exception */ @Override public void configure(ClientDetailsServiceConfigurer clients) throws Exception { clients.withClientDetails(new MockJDBCClientDetailsService()); } ...}
- 而后是用户名和明码的校验
@Configuration@EnableWebSecuritypublic class WebSecurityConfig extends WebSecurityConfigurerAdapter { /** * 3. [明码模式的典型架构档次和次要流程] 中的第 3 步: * 验证用户名和明码是否正确,正确则生成 token * * PS: 这里为演示不便,就地创立了账号,生产环境应自行替换成数据库查问等形式 */ private class MockJDBCUserDeatilsService implements UserDetailsService { @Override public UserDetails loadUserByUsername(String username) throws UsernameNotFoundException { Map<String, String> users = new HashMap<>(); users.put("user1", "pwd1"); users.put("user2", "pwd2"); if (!users.containsKey(username)) { throw new UsernameNotFoundException("User not found"); } return User.withDefaultPasswordEncoder() .username(username) .password(users.get(username)) .roles("USER") .build(); } } @Bean @Override public UserDetailsService userDetailsService() { return new MockJDBCUserDeatilsService(); }}
当 client_id + client_secret + scope,以及用户名和明码都校验通过后,spring-security-oauth2 会调用适合的 tokenServices 生成 token。有趣味的同学能够自行查阅源代码追踪整个过程,这里介绍源码追踪的入口办法:
咱们晓得 demo-h5 客户端(Postman)首先向 http://127.0.0.1:8000/oauth/t... 发动申请,因而咱们找到 spring-security-oauth2 组件源码中的 /oauth/token 端点,具体门路为:
org.springframework.security.oauth2.provider.endpoint.TokenEndpoint.postAccessToken()
4)idp 返回认证后果给客户端,认证通过返回 token,认证失败返回 401。如果认证胜利则此步骤也叫“受权”
这一步 spring-security-oauth2 曾经为咱们解决好了,不须要额定解决。想要追踪源码过程的同学,可参考上一步骤介绍的入口办法。
5)客户端收到 token 后进行暂存,并创立对应的 session
这个步骤通过 Postman 演示(间接复制返回的 token 字符串即可),这里不开展介绍。
6)客户端颁发 cookie 给用户代理/浏览器
这个步骤通过 Postman 演示,这里不开展介绍。
二)第二阶段:受权后申请资源阶段
7)用户通过用户代理(demo-h5)拜访“我的相册”页面,用户代理携带 cookie 向客户端(demo—service)发动申请
此步骤应用 Postman 执行,不开展叙述。
8)客户端通过 session 找到对应的 token,携带此 token 向资源服务器(photo-service)发动申请
此步骤应用 Postman 执行,咱们将第 5) 步获取的 token 作为 Bearer Token,向 photo-service 发动申请,申请的 URL 为:
GET http://127.0.0.1:8010/api/photo该申请只须要携带 token 即可,不须要其余参数
9)资源服务器(photo-service)向 idp 申请验证 token 有效性
在介绍如何解决申请前,咱们先在 photo-service 工程中新增相干代码:
- PhotoController.java
package com.example.demophoto.web;import org.springframework.web.bind.annotation.GetMapping;import org.springframework.web.bind.annotation.RequestMapping;import org.springframework.web.bind.annotation.RestController;@RestController@RequestMapping("/api/")public class PhotoController { @GetMapping("/photo") public String fetchPhoto() { return "GET photo"; }}
此外,还有几个要害配置:
- ResourceServerConfigurerAdapter.configure(HttpSecurity http) 办法配置了 http.authorizeRequests().anyRequest().authenticated() 使得所有申请都要先鉴权;
- application.yaml 中配置了 client_id、client_secret 和 resource.tokenInfoUri,当资源服务承受到申请时,会携带 token 向 tokenInfoUri 指定的地址发动鉴权申请。
默认状况下,当 demo-h5 向 photo-service 发动资源拜访的申请时,photo-service 会将获取的 token 发到 idp 进行校验,在这个过程中 spring-security-oauth2 不会对 scope 做任何解决。咱们晓得 scope 是用来束缚 client 的权限范畴的,因而 scope 权限查看(也视为鉴权的工作之一)这个工作须要本人编码实现。
通常来说,scope 权限查看的业务逻辑能够灵便设定,甚至能够疏忽它。本文介绍两种 scope 查看的实现办法:
- 资源服务器端查看;
- 受权服务器端查看。
接下来的第 10) 步将拆分成两种形式,别离对此进行介绍。
10)【形式一:资源服务器端 scope 查看】 idp 校验 token 有效性,资源服务器校验 scope
idp 校验 token 有效性,通过则返回 client 相干信息(蕴含 scope )给 photo-service,photo-service 再依据 scope 判断客户端(demo-h5)是否有权限调用此 API,如通过查看则持续下一步骤,否则返回 403 谬误给 demo-h5。这一步也叫“鉴权”
咱们在 photo-service 工程中增加以下代码:
- ResourceServerConfigurer.java
@Configuration@EnableResourceServerpublic class ResourceServerConfigurer extends ResourceServerConfigurerAdapter { ... @Override public void configure(HttpSecurity http) throws Exception { http.authorizeRequests() .antMatchers("/api/photo/**").access("#oauth2.hasScope('resource:read')") .antMatchers("/api/photo2/**").access("#oauth2.hasScope('resource:read')") .antMatchers("/api/photo3/**").access("#oauth2.hasScope('resource:write')") .anyRequest().authenticated(); } ...}
通过 access("#oauth2.hasScope('resource:write')") 办法能够实现资源服务器端的 scope 查看。其次要流程为:
- photo-service 收到客户端申请后,将获取到的 token 发往 idp 校验;
- idp 校验通过后,将 clientDetails 信息返回给 photo-service,其中就包含 scope 参数;
- photo-service 拿到 scope 后,依据 access("#oauth2.hasScope('resource:write')") 判断该申请是否在 scope 范畴内。
10)【形式二:idp 端 scope 查看】 idp 校验 token + scope 有效性
idp 校验 token 有效性,再依据 scope 判断客户端(demo-h5)是否有权限调用此 API,最初返回校验后果给资源服务器。因为 spring-security-oauth2 自身没有解决 scope 查看,且默认状况下,photo-service 向 idp 申请 token 鉴权时,并未携带任何其余申请信息,因而 idp 无奈晓得本次申请的细节,因而无奈执行 socpe 查看。
所以重点有两个:一是 photo-service 向 idp 申请 token 鉴权的同时如何携带申请的细节(比方拜访的是什么资源?申请的是哪个API?);二是如何拦挡 token 鉴权过程使得 scope 校验失败是返回 403 谬误?
当然实现这个目标,有很多办法,本文采纳了比拟直观的办法:利用 Filter。
咱们在 photo-service 工程中增加以下代码:
- ResourceServerConfigurer.java
package com.example.demophoto.config.oauth2;import org.springframework.beans.factory.annotation.Autowired;import org.springframework.boot.autoconfigure.security.oauth2.resource.ResourceServerProperties;import org.springframework.context.annotation.Configuration;import org.springframework.security.config.annotation.web.builders.HttpSecurity;import org.springframework.security.oauth2.config.annotation.web.configuration.EnableResourceServer;import org.springframework.security.oauth2.config.annotation.web.configuration.ResourceServerConfigurerAdapter;import org.springframework.security.oauth2.config.annotation.web.configurers.ResourceServerSecurityConfigurer;import org.springframework.security.web.authentication.preauth.AbstractPreAuthenticatedProcessingFilter;@Configuration@EnableResourceServerpublic class ResourceServerConfigurer extends ResourceServerConfigurerAdapter { private final ResourceServerProperties resource; @Autowired protected ResourceServerConfigurer(ResourceServerProperties resource) { this.resource = resource; } /** * 自定义 RemoteTokenServices 以取代资源服务器默认应用的 * RemoteTokenServices 向 IDP 发动 /oauth/check_token 鉴权申请 * * @return */ public CustomRemoteTokenServices customRemoteTokenServices() { CustomRemoteTokenServices services = new CustomRemoteTokenServices(); services.setCheckTokenEndpointUrl(this.resource.getTokenInfoUri()); services.setClientId(this.resource.getClientId()); services.setClientSecret(this.resource.getClientSecret()); return services; } @Override public void configure(ResourceServerSecurityConfigurer resources) { resources.resourceId("demo-1") .tokenServices(customRemoteTokenServices()); } @Override public void configure(HttpSecurity http) throws Exception { http.addFilterBefore(new CheckTokenFilter(), AbstractPreAuthenticatedProcessingFilter.class); http.authorizeRequests() .antMatchers("/api/photo/**").access("#oauth2.hasScope('resource:read')") .antMatchers("/api/photo2/**").access("#oauth2.hasScope('resource:read')") .antMatchers("/api/photo3/**").access("#oauth2.hasScope('resource:write')") .anyRequest().authenticated(); }}
- CheckTokenFilter.java
package com.example.demophoto.config.oauth2;import org.springframework.security.core.context.SecurityContext;import org.springframework.security.core.context.SecurityContextHolder;import javax.servlet.*;import javax.servlet.http.HttpServletRequest;import java.io.IOException;import java.util.HashMap;import java.util.Map;/** * 在向 IDP 发动 /oauth/check_token 申请前,将申请细节存储到 SecurityContext 中, * 以便 CustomRemoteTokenServices.loadAuthentication() 能够获取到该申请细节 */public class CheckTokenFilter implements Filter { @Override public void doFilter(ServletRequest req, ServletResponse res, FilterChain chain) throws IOException, ServletException { HttpServletRequest request = (HttpServletRequest) req; String uri = request.getRequestURI(); String method = request.getMethod(); /** * 仅解决 /api/** */ if (!uri.startsWith("/api/")) { chain.doFilter(req, res); return; } SecurityContext sc = SecurityContextHolder.getContext(); CheckTokenAuthentication authentication = (CheckTokenAuthentication) sc.getAuthentication(); if (authentication == null) { authentication = new CheckTokenAuthentication(null); } /** * 将用户代理或其余服务申请拜访本资源服务器的细节(此处为 HTTP-Method + URI) * 存储到 SecurityContext 的 authentication 对象中 */ Map<String, Object> details = new HashMap<>(); details.put("uri", uri); details.put("method", method); authentication.setDetails(details); sc.setAuthentication(authentication); chain.doFilter(req, res); }}
- CustomRemoteTokenServices.java
package com.example.demophoto.config.oauth2;import org.apache.commons.logging.Log;import org.apache.commons.logging.LogFactory;import org.springframework.http.*;import org.springframework.http.client.ClientHttpResponse;import org.springframework.security.access.AccessDeniedException;import org.springframework.security.core.Authentication;import org.springframework.security.core.AuthenticationException;import org.springframework.security.core.context.SecurityContextHolder;import org.springframework.security.crypto.codec.Base64;import org.springframework.security.oauth2.client.resource.OAuth2AccessDeniedException;import org.springframework.security.oauth2.common.OAuth2AccessToken;import org.springframework.security.oauth2.common.exceptions.InvalidTokenException;import org.springframework.security.oauth2.provider.OAuth2Authentication;import org.springframework.security.oauth2.provider.token.AccessTokenConverter;import org.springframework.security.oauth2.provider.token.DefaultAccessTokenConverter;import org.springframework.security.oauth2.provider.token.ResourceServerTokenServices;import org.springframework.util.LinkedMultiValueMap;import org.springframework.util.MultiValueMap;import org.springframework.web.client.DefaultResponseErrorHandler;import org.springframework.web.client.RestOperations;import org.springframework.web.client.RestTemplate;import java.io.IOException;import java.io.UnsupportedEncodingException;import java.util.HashMap;import java.util.Map;/** * 以 RemoteTokenServices 为模板 * 基本思路是在向 IDP 发动 /oauth/check_token 的申请中, * 增加用户代理或其余服务申请拜访本资源服务器的 API 的细节, * 以便 IDP 能够判断该用户代理或其余服务(即 client)是否能够调用此 API * <p> * (PS:也能够由 IDP 返回 ClientDetails 给资源服务,由资源服务解决放行逻辑) */public class CustomRemoteTokenServices implements ResourceServerTokenServices { protected final Log logger = LogFactory.getLog(getClass()); private RestOperations restTemplate; private String checkTokenEndpointUrl; private String clientId; private String clientSecret; private String tokenName = "token"; /** * 与 IDP 约定的存储 API 申请细节的参数 */ private String reqPayload = "payload"; private AccessTokenConverter tokenConverter = new DefaultAccessTokenConverter(); public CustomRemoteTokenServices() { restTemplate = new RestTemplate(); ((RestTemplate) restTemplate).setErrorHandler(new DefaultResponseErrorHandler() { @Override // Ignore 400 public void handleError(ClientHttpResponse response) throws IOException { Integer statusCode = response.getRawStatusCode(); if (statusCode != 400) { if (statusCode == 401 || statusCode == 403) { HttpStatus status = HttpStatus.resolve(statusCode); throw new AccessDeniedException(status.toString()); } super.handleError(response); } } }); } public void setRestTemplate(RestOperations restTemplate) { this.restTemplate = restTemplate; } public void setCheckTokenEndpointUrl(String checkTokenEndpointUrl) { this.checkTokenEndpointUrl = checkTokenEndpointUrl; } public void setClientId(String clientId) { this.clientId = clientId; } public void setClientSecret(String clientSecret) { this.clientSecret = clientSecret; } public void setAccessTokenConverter(AccessTokenConverter accessTokenConverter) { this.tokenConverter = accessTokenConverter; } public void setTokenName(String tokenName) { this.tokenName = tokenName; } /** * 当应用自定义的 tokenServices 替换默认的 tokenServices 后, * 原来流程中的第 9 步就变成由该办法执行。 * * 9. [明码模式的典型架构档次和次要流程] 中的第 9 步: * 资源服务器(photo-service)向 idp 申请验证 token 有效性 * * @param accessToken * @return * @throws AuthenticationException * @throws InvalidTokenException */ @Override public OAuth2Authentication loadAuthentication(String accessToken) throws AuthenticationException, InvalidTokenException { Map<String, Object> authDetails = new HashMap<>(); /** * 获得在 CheckTokenFilter 过滤器中置入的 API 申请细节 */ Authentication authentication = SecurityContextHolder.getContext().getAuthentication(); if (authentication != null) { authDetails = (Map<String, Object>) authentication.getDetails(); } MultiValueMap<String, String> formData = new LinkedMultiValueMap<>(); formData.add(tokenName, accessToken); if (!authDetails.isEmpty()) { formData.add(reqPayload, authDetails.get("method") + " " + authDetails.get("uri")); } HttpHeaders headers = new HttpHeaders(); headers.set("Authorization", getAuthorizationHeader(clientId, clientSecret)); Map<String, Object> map = postForMap(checkTokenEndpointUrl, formData, headers); /** * 11. [明码模式的典型架构档次和次要流程] 中的第 11 步: * 如果 token 校验失败则返回 401 给客户端,如果 scope 查看不通过则返回 403 */ if (map.containsKey("error")) { if (logger.isDebugEnabled()) { logger.debug("check_token returned error: " + map.get("error")); } if (map.containsKey("status")) { if ("403".equals(map.get("status").toString())) { throw new OAuth2AccessDeniedException(map.get("error").toString()); } } throw new InvalidTokenException(accessToken); } // gh-838 if (map.containsKey("active") && !"true".equals(String.valueOf(map.get("active")))) { logger.debug("check_token returned active attribute: " + map.get("active")); throw new InvalidTokenException(accessToken); } return tokenConverter.extractAuthentication(map); } @Override public OAuth2AccessToken readAccessToken(String accessToken) { throw new UnsupportedOperationException("Not supported: read access token"); } private String getAuthorizationHeader(String clientId, String clientSecret) { if (clientId == null || clientSecret == null) { logger.warn("Null Client ID or Client Secret detected. Endpoint that requires authentication will reject request with 401 error."); } String creds = String.format("%s:%s", clientId, clientSecret); try { return "Basic " + new String(Base64.encode(creds.getBytes("UTF-8"))); } catch (UnsupportedEncodingException e) { throw new IllegalStateException("Could not convert String"); } } private Map<String, Object> postForMap(String path, MultiValueMap<String, String> formData, HttpHeaders headers) { if (headers.getContentType() == null) { headers.setContentType(MediaType.APPLICATION_FORM_URLENCODED); } @SuppressWarnings("rawtypes") Map<String, Object> result = new HashMap<>(); try { Map map = restTemplate.exchange(path, HttpMethod.POST, new HttpEntity<MultiValueMap<String, String>>(formData, headers), Map.class).getBody(); result = map; } catch (Exception e) { logger.error(e.getMessage()); } return result; }}
- CheckTokenAuthentication.java
package com.example.demophoto.config.oauth2;import org.springframework.security.authentication.AbstractAuthenticationToken;import org.springframework.security.core.GrantedAuthority;import java.util.Collection;public class CheckTokenAuthentication extends AbstractAuthenticationToken { /** * Creates a token with the supplied array of authorities. * * @param authorities the collection of <tt>GrantedAuthority</tt>s for the principal * represented by this authentication object. */ public CheckTokenAuthentication(Collection<? extends GrantedAuthority> authorities) { super(authorities); } @Override public Object getCredentials() { return null; } @Override public Object getPrincipal() { return null; }}
接着在 idp 工程中增加以下代码:
- AuthorizationServerConfigurer.java
@Configuration@EnableAuthorizationServerpublic class AuthorizationServerConfigurer extends AuthorizationServerConfigurerAdapter { ... @Override public void configure(AuthorizationServerEndpointsConfigurer endpoints) { endpoints.authenticationManager(authenticationManager) // 通过插入 interceptor 来实现自定义的鉴权办法 .addInterceptor(new CheckTokenInterceptor(endpoints.getTokenStore())); } ...}
- CheckTokenInterceptor.java
package com.example.demoidp.config.oauth2;import org.springframework.security.access.AccessDeniedException;import org.springframework.security.oauth2.provider.OAuth2Authentication;import org.springframework.security.oauth2.provider.OAuth2Request;import org.springframework.security.oauth2.provider.token.TokenStore;import org.springframework.util.StringUtils;import org.springframework.web.servlet.HandlerInterceptor;import javax.servlet.http.HttpServletRequest;import javax.servlet.http.HttpServletResponse;import java.util.HashMap;import java.util.Map;/** * /oauth/check_token 校验 token 申请拦截器 */public class CheckTokenInterceptor implements HandlerInterceptor { private String TOKEN_NAME = "token"; private final String TOKEN_INFO_URI = "/oauth/check_token"; private TokenStore tokenStore; public CheckTokenInterceptor(TokenStore tokenStore) { this.tokenStore = tokenStore; } // for test only private final Map<String, String> clientScopes = new HashMap<String, String>() { { put("client1[resource:read]", "GET /api/photo"); put("client1[resource:write]", "POST /api/photo"); put("client2[resource:read]", "GET /api/photo2"); put("client2[resource:write]", "POST /api/photo2"); put("client3[resource:read]", "GET /api/photo3"); put("client3[resource:write]", "POST /api/photo3"); } }; /** * 10. [明码模式的典型架构档次和次要流程] 中的第 10 步: * idp 校验 token 有效性和 scope 权限 * <p> * 即 IDP 依据 scope 判断客户端(demo-service) * 是否有权限调用此 API,最初返回校验后果给资源服务器 */ @Override public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler) throws Exception { String uri = request.getRequestURI(); /** * 仅拦挡 /oauth/check_token */ if (!TOKEN_INFO_URI.equals(uri)) { return true; } /** * payload 是 IDP 和资源服务器角色约定的传参格局 * 即 client 申请拜访资源服务器的 API 的细节 * 可要求必须携带 payload * * 此局部可依据业务逻辑自行处理 */ String paylad = request.getParameter("payload"); if (StringUtils.isEmpty(paylad)) { throw new AccessDeniedException("insufficient_payload"); } if ("GET /error".equals(paylad)) { return true; } /** * 10. [明码模式的典型架构档次和次要流程] 中的第 10 步: * 【形式二:idp 端 scope 查看】 idp 校验 token + scope 有效性 * * 依据 token 查得 clientId,再依据 scope 查看该 client 是否有权限调用此 API * 此局部可依据业务逻辑自行处理,比方从数据库中查问 client、API 和 scope 的关系 */ String token = request.getParameter(TOKEN_NAME); OAuth2Authentication oAuth2Authentication = tokenStore.readAuthentication(token); OAuth2Request oAuth2Request = oAuth2Authentication.getOAuth2Request(); String scopeKey = oAuth2Request.getClientId() + oAuth2Request.getScope(); if (clientScopes.containsKey(scopeKey)) { if (!clientScopes.get(scopeKey).equals(paylad)) { throw new AccessDeniedException("insufficient_scope"); } } return true; }}
idp 端的 scope 查看实现起来略微麻烦点,其次要思路是:
- 在 photo-service 向 idp 发动 /oauth/check_oauth 鉴权申请前,增加过滤器,将客户端的申请细节保留到某个全局对象中;
- 替换 photo-service 默认的 tokenServices,在向 idp 发动 /oauth/check_oauth 鉴权申请的过程中,将申请细节附加到申请中;
- idp 在 AuthorizationServerEndpointsConfigurer 中增加自定义 Interceptor,在每次 check token 前先执行 自定义 Interceptor;
- idp 在自定义 Interceptor 中取出申请细节,依据申请细节和 clientDetails 信息(scope),执行 scope 查看。
以上办法,尽管实现麻烦,然而定制性和灵活性很强,不受框架束缚,能够适应各种简单的业务逻辑。
11)资源服务器依据 idp 测验后果(true/false 或其余等效伎俩)决定是否返回用户相册数据给客户端。如果 token 校验失败则返回 401 给客户端,如果 scope 查看不通过则返回 403。这一步也叫“权限管制”
与鉴权工作中的 scope 范畴查看相似,实现权限管制的办法也有两种:
- 受权服务器端的权限管制,属于集中式权限管制;
- 资源服务器端的权限管制,属于分散型权限管制。
其中,受权服务器端的权限管制比较简单,在 idp 工程的 CheckTokenInterceptor.preHandle() 办法中增加权限管制的业务代码即可:
- CheckTokenInterceptor.java
public class CheckTokenInterceptor implements HandlerInterceptor { @Override public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler) throws Exception { ... /** * 11. [明码模式的典型架构档次和次要流程] 中的第 11 步: * 受权服务器短的权限管制,即集中式权限管制 * * 实现更细粒度的权限管制,从某种程度上来说,这个过程也能够称作鉴权 */ // 受权服务器端鉴权/权限管制业务的逻辑 return true; }}
最初来看资源服务器端的权限管制。咱们应用 spring-secutity 提供的规范办法来实现:
- 资源服务器端 PreAuthorize hasRole/hasAuthority
- 资源服务器端 PreAuthorize 自定义实现 hasPermission
以上说法在某种程度上也能够了解为鉴权。
首先,咱们增加或批改 photo-service 工程的相干代码:
- PhotoController.java
package com.example.demophoto.web;import org.springframework.security.access.prepost.PreAuthorize;import org.springframework.web.bind.annotation.GetMapping;import org.springframework.web.bind.annotation.RequestMapping;import org.springframework.web.bind.annotation.RestController;/** * 1、 权限管制的两种类型:资源服务端权限管制、受权服务器端权限管制 * 2、 权限管制的三种办法: * A、 资源服务器端 PreAuthorize hasRole/hasAuthority * B、 资源服务器端 HttpSecurity access 自定义实现 hasPermission * D、 受权服务器端 HandlerInterceptor * 以上说法在某种程度上也能够了解为鉴权。 */@RestController@RequestMapping("/api/")public class PhotoController { @GetMapping("/photo") @PreAuthorize("hasRole('USER') and hasAuthority('WRITE')") public String fetchPhoto() { return "GET photo"; } @GetMapping("/photo2") public String fetchPhoto2() { return "GET photo 2"; } @GetMapping("/photo3") @PreAuthorize("hasPermission('PhotoController', 'read')") public String fetchPhoto3() { return "GET photo 3"; }}
- ResourceServerConfigurer.java
@Configuration@EnableResourceServerpublic class ResourceServerConfigurer extends ResourceServerConfigurerAdapter { ... /** * 旧版本的 spring-security-oauth2 还须要将执行 resources.expressionHandler(oAuth2WebSecurityExpressionHandler) * 以注入自定义的 expressionHandler,以后及当前版本不须要了 * * @return */ @Bean public OAuth2WebSecurityExpressionHandler oAuth2WebSecurityExpressionHandler() { OAuth2WebSecurityExpressionHandler oAuth2WebSecurityExpressionHandler = new OAuth2WebSecurityExpressionHandler(); // 在新版本的 spring-security-oauth2 中,这行代码能够不必, // 框架会主动注入 customPermissionEvaluator 替换默认的 DenyAllPermissionEvaluator // oAuth2WebSecurityExpressionHandler.setPermissionEvaluator(customPermissionEvaluator); return oAuth2WebSecurityExpressionHandler; } ...}
- CustomPermissionEvaluator.java
package com.example.demophoto.config.oauth2;import com.example.demophoto.service.PermisionEvaluatingService;import org.springframework.security.access.PermissionEvaluator;import org.springframework.security.core.Authentication;import org.springframework.stereotype.Component;import java.io.Serializable;@Componentpublic class CustomPermissionEvaluator implements PermissionEvaluator { private PermisionEvaluatingService permisionEvaluatingService = new PermisionEvaluatingService(); @Override public boolean hasPermission(Authentication authentication, Object targetDomainObject, Object permission) { return permisionEvaluatingService.hasPermission(authentication, targetDomainObject, permission); } @Override public boolean hasPermission(Authentication authentication, Serializable targetId, String targetType, Object permission) { return permisionEvaluatingService.hasPermission(authentication, targetId, targetType, permission); }}
- PermisionEvaluatingService.java
package com.example.demophoto.service;import org.springframework.security.core.Authentication;import java.io.Serializable;public class PermisionEvaluatingService { public boolean hasPermission(Authentication authentication, Object targetDomainObject, Object permission) { // 业务逻辑 return true; } public boolean hasPermission(Authentication authentication, Serializable targetId, String targetType, Object permission) { // 业务逻辑 return true; }}
- DemoPhotoApplication.java
@SpringBootApplication@EnableGlobalMethodSecurity(prePostEnabled = true) // 开启 hasRole/hasAuthority/hasPermission 反对public class DemoPhotoApplication { ...}
通过以上配置,当客户端向 photo-service 发动 GET /api/photo3 申请时,将会进入 CustomPermissionEvaluator.hasPermission() 办法进行判断,因而能够实现非常灵活的资源服务器端权限管制。