使用JWT的OAuth2的SSO分析

Posted 2020-09-18 沧海一滴

参考:https://github.com/spring-guides/tut-spring-security-and-angular-js/blob/master/oauth2/README.adoc 
http://jwt.io/introduction/ 
本文在<使用OAuth2的SSO分析>文章的基础上扩展,使用jwt可减少了向认证服务器的请求,但jwt比swt(Simple Web Tokens)要长不少,还要依赖公钥解密. 

1.浏览器向UI服务器点击触发要求安全认证 
2.跳转到授权服务器获取授权许可码 
3.从授权服务器带授权许可码跳回来 
4.UI服务器向授权服务器获取AccessToken 
5.返回AccessToken到UI服务器 
6.发出/resource/请求到UI服务器 
7.UI服务器将/resource/请求转发到Resource服务器 
Resource服务器从请求取出accessToken,解码,直接转化为认证授权信息进行判断后(最后会响应给UI服务器,UI服务器再响应给浏览中器）

这里与<使用OAuth2的SSO分析>主要不同的是,accessToken是jwt,经过解码,转化就可成为认证授权信息,无需再向授权服务器协助获得认证授权信息,关于jwt可参看前面提供的链接.本文还修改了自定义登录页和授权页,这种方案开始接近于生产了.

一.先创建OAuth2授权服务器 
1.因为使用了自定义页面,添加了wro4j-maven-plugin插件和以下依赖到pom.xml

<dependency>
    <groupId>org.springframework.security</groupId>
    <artifactId>spring-security-jwt</artifactId>
</dependency>
<dependency>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-freemarker</artifactId>
</dependency>
<dependency>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-actuator</artifactId>
</dependency>

2.主类修改比较大,主类继承WebMvcConfigurerAdapter主要是注册视图控制器;
继承WebSecurityConfigurerAdapter的内部类主要修改自定义权限控制;
关键是继承AuthorizationServerConfigurerAdapter的授权服务器配置,里面配置了JwtAccessTokenConverter(密钥就在这里使用),并使用这个Bean;
@EnableResourceServer一样是放在主类上. 

3.application配置将oauth的配置移到了OAuth2AuthorizationConfig内部类内部.增加了一个密钥库文件和两个freemarker页面 
启动授权服务器后,可测试了: 
a.打开浏览器输入地址http://localhost:9999/uaa/oauth/authorize?response_type=code&client_id=acme&redirect_uri=http://example.com发出请求,然后根据以上配置,输入用户名/密码,点同意,获取返回的授权许可码 
b.在Linux的bash或mac的terminal输入 

[[email protected] ~]#curl acme:[email protected]192.168.1.115:9999/uaa/oauth/token \ 
-d grant_type=authorization_code -d client_id=acme \ 
-d redirect_uri=http://example.com -d code=fjRdsL 

回车获取access token,其中fjRdsL替换上步获取的授权许可码.返回结果类似如下: 

{
  "access_token": "eyJhbGciOiJSUzI1NiJ9.eyJleHAiOjE0NTk1NTUxNTYsInVzZXJfbmFtZSI6InVzZXIiLCJhdXRob3JpdGllcyI6WyJST0xFX0FETUlOIiwiUk9MRV9VU0VSIl0sImp0aSI6IjI5MjcyYWJiLTQ4MjUtNGYwMS1hZjllLTg5ZGE1ZDE1MDBiNyIsImNsaWVudF9pZCI6ImFjbWUiLCJzY29wZSI6WyJvcGVuaWQiXX0.cQd88GYItHUDJuwkd_Rd0Yo8QM1R0dccuK0-xZ4OynC7EnqClLunaNOZ9jXwtilIFJNxbkbhQ8ymXdvlAF5Zjo8lpRGotdVo9rgQc39BDse7hGy1EfA9ZADQmJ-EuwkTNo0IBEXYC33XxQNK_3I_E92cnIPXq-FZHuZMRzpr-SlriwLa3aZVidmeyXK2U5dsjViWoHHKhcg-9c-VBPtyTJfPZOvj3s7DrbfCgOAGOhHkd_MBCdLDFb7QFhzIRsMfcD9rOAGTqk-hU2pHkkakKQ7_vL604UU7Qh3Zzkn6VbHPy0HAAiB9cnUhkQxK3Qb-wbHG-l3FC2pDlhtlhMHNfg",
  "token_type": "bearer",
  "refresh_token": "eyJhbGciOiJSUzI1NiJ9.eyJ1c2VyX25hbWUiOiJ1c2VyIiwic2NvcGUiOlsib3BlbmlkIl0sImF0aSI6IjI5MjcyYWJiLTQ4MjUtNGYwMS1hZjllLTg5ZGE1ZDE1MDBiNyIsImV4cCI6MTQ2MjEwMzk1NiwiYXV0aG9yaXRpZXMiOlsiUk9MRV9BRE1JTiIsIlJPTEVfVVNFUiJdLCJqdGkiOiIzNWM5OWY0Yy0xMGM0LTQ5ZTAtODAwYi1lZTc5ZTQ3ODNkNmUiLCJjbGllbnRfaWQiOiJhY21lIn0.bUvJ9HmrFU92euLzd5eesJKFlav5v1WyfBEgd3pO6I2D2yYy98oPwfNwCrbP44M2ilO48LJEovLLoZFYvjfA8xe6XO1Fx55Tik5SrWfizAEsNFsFg25zE92T3YNocStxuJWFSVBLlwjtxpVmnHOgPefku2G6N5seziX0SOBJleHSUObNAYtiBVQjKWXA3jGnMoZSP0dMbgtrWinwRJLwvaMgMDNnxYFSdvSW99XKjCyQNVmbGa4aRyy-xblTr7qlSqdcZIdRBfKkHM5S9jaenNVc85vGAYQFPrdkRWhk4v-8nlHJiYdBa6ZspgbVWw_oPLgP8cbuzJev86q55p1gAw",
  "expires_in": 43199,
  "scope": "openid",
  "jti": "29272abb-4825-4f01-af9e-89da5d1500b7"
}

 

从返回结果复制access_token,继续: 

[[email protected] ~]# TOKEN=eyJhbGciOiJSUzI1NiJ9.eyJleHAiOjE0NTk1NTUxNTYsInVzZXJfbmFtZSI6InVzZXIiLCJhdXRob3JpdGllcyI6WyJST0xFX0FETUlOIiwiUk9MRV9VU0VSSI6IjI5MjcyYWJiLTQ4MjUtNGYwMS1hZjllLTg5ZGE1ZDE1MDBiNyIsImNsaWVudF9pZCI6ImFjbWUiLCJzY29wZSI6WyJvcGVuaWQiXX0.cQd88GYItHUDJuwkd_Rd0Yo8QM1R0dccuK0-xZ4OynC7EnqClLunaNOZ9jXwtilIFJNxbkbhQ8ymXdvlAF5Zjo8lpRGotdVo9rgQc39BDse7hGy1EfA9ZADQmJ-EuwkTNo0IBEXYC33XxQNK_3I_E92cnIPXq-FZHuZMRzpr-SlriwLa3aZVidmeyXK2U5dsjViWoHHKhcg-9c-VBPtyTJfPZOvj3s7DrbfCgOAGOhHkd_MBCdLDFb7QFhzIRsMfcD9rOAGTqk-hU2pHkkakKQ7_vL604UU7Qh3Zzkn6VbHPy0HAAiB9cnUhkQxK3Qb-wbHG-l3FC2pDlhtlhMHNfg 
[[email protected] ~]# curl -H “Authorization: Bearer $TOKEN” 192.168.1.115:9999/uaa/user 

第二个命令返回结果类似如下: 

{
  "details": {
    "remoteAddress": "192.168.1.194",
    "sessionId": null,
    "tokenValue": "eyJhbGciOiJSUzI1NiJ9.eyJleHAiOjE0NTk1NTUxNTYsInVzZXJfbmFtZSI6InVzZXIiLCJhdXRob3JpdGllcyI6WyJST0xFX0FETUlOIiwiUk9MRV9VU0VSIl0sImp0aSI6IjI5MjcyYWJiLTQ4MjUtNGYwMS1hZjllLTg5ZGE1ZDE1MDBiNyIsImNsaWVudF9pZCI6ImFjbWUiLCJzY29wZSI6WyJvcGVuaWQiXX0.cQd88GYItHUDJuwkd_Rd0Yo8QM1R0dccuK0-xZ4OynC7EnqClLunaNOZ9jXwtilIFJNxbkbhQ8ymXdvlAF5Zjo8lpRGotdVo9rgQc39BDse7hGy1EfA9ZADQmJ-EuwkTNo0IBEXYC33XxQNK_3I_E92cnIPXq-FZHuZMRzpr-SlriwLa3aZVidmeyXK2U5dsjViWoHHKhcg-9c-VBPtyTJfPZOvj3s7DrbfCgOAGOhHkd_MBCdLDFb7QFhzIRsMfcD9rOAGTqk-hU2pHkkakKQ7_vL604UU7Qh3Zzkn6VbHPy0HAAiB9cnUhkQxK3Qb-wbHG-l3FC2pDlhtlhMHNfg",
    "tokenType": "Bearer",
    "decodedDetails": null
  },
  "authorities": [
    {
      "authority": "ROLE_ADMIN"
    },
    {
      "authority": "ROLE_USER"
    }
  ],
  "authenticated": true,
  "userAuthentication": {
    "details": null,
    "authorities": [
      {
        "authority": "ROLE_ADMIN"
      },
      {
        "authority": "ROLE_USER"
      }
    ],
    "authenticated": true,
    "principal": "user",
    "credentials": "N/A",
    "name": "user"
  },
  "credentials": "",
  "principal": "user",
  "oauth2Request": {
    "clientId": "acme",
    "scope": [
      "openid"
    ],
    "requestParameters": {
      "client_id": "acme"
    },
    "resourceIds": [],
    "authorities": [],
    "approved": true,
    "refresh": false,
    "redirectUri": null,
    "responseTypes": [],
    "extensions": {},
    "grantType": null,
    "refreshTokenRequest": null
  },
  "clientOnly": false,
  "name": "user"
}

从结果来看,使用access token访问资源一切正常,说明授权服务器没问题.

二.再看分离的资源服务器 
spring-security-jwt依赖也要加入pom.xml;
主类没改动;
application配置文件使用security.oauth2.resource.jwt.keyValue替换security.oauth2.resource.userInfoUri选项,使用这个公钥来解密jwt.

最后运行主类的main方法测试(授权服务器前面启动了,access_token也得到了),于是在使用curl命令: 

[[email protected] ~]# curl -H “Authorization: Bearer $TOKEN” 192.168.1.115:9000 

返回结果类似如下: 

{
  "id": "03af8be3-2fc3-4d75-acf7-c484d9cf32b1",
  "content": "Hello World"
} 

跟踪下获取认证授权的信息过程: 

当使用curl -H “Authorization: Bearer $TOKEN” 192.168.1.115:9000发出请求时,直到被OAuth2AuthenticationProcessingFilter拦截器处理, 

org.springframework.security.oauth2.provider.authentication.OAuth2AuthenticationProcessingFilter
#doFilter{ 
Authentication authentication = tokenExtractor.extract(request);//抽取Token 
Authentication authResult = authenticationManager.authenticate(authentication);//还原解码认证授权信息 
} 
org.springframework.security.oauth2.provider.authentication.OAuth2AuthenticationManager
#authenticate{ 
OAuth2Authentication auth = tokenServices.loadAuthentication(token);//这里的tokenServices是DefaultTokenServices 
} 
org.springframework.security.oauth2.provider.token.DefaultTokenServices
#loadAuthentication{ 
OAuth2AccessToken accessToken = tokenStore.readAccessToken(accessTokenValue);//tokenStore是JwtTokenStore 
OAuth2Authentication result = tokenStore.readAuthentication(accessToken); 
} 
org.springframework.security.oauth2.provider.token.store.JwtTokenStore
#readAccessToken{ 
OAuth2AccessToken accessToken = convertAccessToken(tokenValue); 
} 
org.springframework.security.oauth2.provider.token.store.JwtTokenStore
#convertAccessToken{ 
return jwtTokenEnhancer.extractAccessToken(tokenValue, jwtTokenEnhancer.decode(tokenValue)); 
} 
org.springframework.security.oauth2.provider.token.DefaultAccessTokenConverter
#extractAccessToken 

经过上面这个过程,用到jwt的公钥对jwt进行解码,从中抽取OAuth2Authentication,这个Authentication本身就包含了用户认证的信息.
无需再向授权服务器发请求解码

三.UI服务器作为SSO的客户端. 
同样UI服务器也要添加spring-security-jwt依赖到pom.xml;
主类也基本不改动;
和资源服务器一样,使用security.oauth2.resource.jwt.keyValue替换security.oauth2.resource.userInfoUri选项.
其它的分析与<使用OAuth2的SSO分析>类似.
可以三台服务器都启动测试了.
http://blog.csdn.net/xiejx618/article/details/51039683