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back-end:spring:security [2021/04/26 13:31] – created ledyxback-end:spring:security [2021/04/29 16:23] (current) – [WebSecurityConfigurerAdapter] configure() 설명 추가 ledyx
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 = Spring Security = = Spring Security =
  
-[[https://docs.spring.io/spring-security/site/docs/current/reference/html5/#servlet-applications|Spring Security - Servlet Applications]]+SpringBoot 기준으로 서술
  
 {{tag>Java Spring}} {{tag>Java Spring}}
  
-== 기본 개념 ==+== Overview == 
 + 
 +  * Authentication : 인증. “유효한 사용자인가?” 
 +  * Authorization : 허가(권한 부여). 유효한 사용자가 이 작업을 할 수 있는가? 
 + 
 +=== Documents === 
 + 
 +  * [[https://spring.io/guides/topicals/spring-security-architecture|Spring Security Architecture]] 
 +  * [[https://springbootdev.com/2017/08/23/spring-security-authentication-architecture|Spring Security : Authentication Architecture]] 
 +  * [[https://docs.spring.io/spring-security/site/docs/current/reference/html5/#servlet-applications|[Docs] Spring Security - Servlet Applications]] 
 +  * [[https://github.com/spring-projects/spring-security/tree/5.4.6/samples/boot|Samples]] 
 + 
 +== Authentication == 
 + 
 +[[https://docs.spring.io/spring-security/site/docs/current/reference/html5/#servlet-authentication|Docs]] 
 + 
 +{{:back-end:spring:spring-security-architecture.png}} 
 + 
 +  * 모두 Interface 
 + 
 +<flow> 
 +classDiagram 
 +    class AuthenticationManager { 
 +        authenticate(Authentication authentication) Authentication 
 +    } 
 +     
 +    class AuthenticationProvider { 
 +        authenticate(Authentication authentication) Authentication 
 +        supports(Class~?~ authentication) boolean 
 +    } 
 +     
 +    class UserDetailsService { 
 +        loadUserByUsername(String username) UserDetails 
 +    } 
 +     
 +    class UserDetails { 
 +        getAuthorities() Collection~? extends GrantedAuthority~ 
 +        getPassword() String 
 +        isAccountNonExpired() boolean 
 +        isAccountNonLocked() boolean 
 +        isCredentialsNonExpired() boolean 
 +        isEnabled() boolean 
 +    } 
 +     
 +    AuthenticationManager --> AuthenticationProvider : authRequest 
 +    AuthenticationProvider <..> UserDetailsService : 서비스 주입 후 authenticate()에서 사용자 정보를 꺼내어 사용 
 +    UserDetailsService -- UserDetails 
 +</flow> 
 + 
 +=== AuthenticationManager === 
 + 
 +  * [[https://docs.spring.io/spring-security/site/docs/current/api/org/springframework/security/authentication/AuthenticationManager.html|AuthenctaionManager]] 
 +    * 기본 구현체 : [[https://docs.spring.io/spring-security/site/docs/current/api/org/springframework/security/authentication/ProviderManager.html|ProviderManager]] 
 +    * [[https://docs.spring.io/spring-security/site/docs/current/api/org/springframework/security/config/annotation/authentication/builders/AuthenticationManagerBuilder.html|AuthenticationManagerBuilder]] : [[https://docs.spring.io/spring-security/site/docs/current/api/org/springframework/security/config/annotation/web/configuration/WebSecurityConfigurerAdapter.html|WebSecurityConfigurerAdapter 의 configure(AuthenticationManagerBuilder auth)]] Method로 "auth" 인자를 사용할 수 있는데, 이 인자의 "userDetailsService(T userDetailsService)"로 "UserDetailsService" 주입이 가능함. 
 + 
 +{{:back-end:spring:authenticationmanager.png|}} 
 + 
 +=== AuthenticationProvider  === 
 + 
 +  * [[https://docs.spring.io/spring-security/site/docs/current/api/org/springframework/security/authentication/AuthenticationProvider.html|AuthenticationProvider]] 
 + 
 +{{:back-end:spring:authenticationprovider.png|}} 
 + 
 +=== UserDetailsService  === 
 + 
 +"[[https://docs.spring.io/spring-security/site/docs/current/api/org/springframework/security/core/userdetails/UserDetailsService.html#loadUserByUsername-java.lang.String-|UserDetailsService에는 UserDetails loadUserByUsername(String username)]]"만 있는데, 여기서 [[https://docs.spring.io/spring-security/site/docs/current/api/org/springframework/security/core/userdetails/UserDetails.html|UserDetails]]는 이름, 비밀번호, 인증/인가등의 기본적인 사용자 정보를 담는 Class. 
 + 
 +{{:back-end:spring:userdetailsservice.png|}} 
 + 
 +또 다른 사용자 정보를 담는 Bean을 만들기보다 이를 상속해서 사용하는게 일을 덜 할 수 있으리라 판단된다. 
 + 
 +마음에 드는 구현체가 없다면 이 Interface를 상속받아서 재정의. 
 + 
 +자식 Interface인 [[https://docs.spring.io/spring-security/site/docs/current/api/org/springframework/security/provisioning/UserDetailsManager.html|UserDetailsManager]]는 비밀번호 변경, 사용자 생성/삭제/갱신, 사용자 존재 여부등의 기능이 추가로 있음. 
 + 
 + 
 +---- 
 + 
 + 
 +=== WebSecurityConfigurerAdapter === 
 + 
 +전역적인(globally) authentication이 필요할 때 사용. 
 + 
 +[[https://docs.spring.io/spring-security/site/docs/current/api/org/springframework/security/config/annotation/web/configuration/WebSecurityConfigurerAdapter.html|WebSecurityConfigurerAdapter]]를 상속해서 사용한다. 여기서 주의깊게 봐야 하는 Method는 "configure"인데, 3개의 종류를 가진다. 
 + 
 +  * **protected void configure(AuthenticationManagerBuilder auth)** 
 +    * Used by the default implementation of authenticationManager() to attempt to obtain an AuthenticationManager. 
 +  * **protected void configure(HttpSecurity http)** 
 +    * Override this method to configure the HttpSecurity. 
 +  * **void configure(WebSecurity web)** 
 +    * Override this method to configure WebSecurity. 
 + 
 +{{:back-end:spring:websecurityconfigurer.png}} 
 + 
 +  * WebSecurityConfigurerAdapter, AbstractConfiguredSecurityBuilder, AbstractSecurityBuilder : abstract class 
 +  * WebSecurity : final class 
 + 
 +<flow> 
 +classDiagram 
 +  class SecurityConfigurer~O, B extends SecurityBuilder＜O＞~ { 
 +    init(B builder) 
 +    configure(B builder) 
 +  } 
 +   
 +  class WebSecurityConfigurer~T extends SecurityBuilder＜Filter＞~ 
 +   
 +  class SecurityBuilder~O~ { 
 +    build() O 
 +  } 
 +   
 +  class AbstractSecurityBuilder~O~ 
 +   
 +  class AbstractConfiguredSecurityBuilder~O, B extends SecurityBuilder＜O＞~ 
 +   
 +  class WebSecurity 
 +   
 +  SecurityConfigurer <|-- WebSecurityConfigurer : ＜Filter,  T extends SecurityBuilder＜Filter＞＞ 
 +  WebSecurityConfigurer  <|-- WebSecurityConfigurerAdapter : ＜WebSecurity＞ 
 +   
 +  SecurityBuilder <|-- AbstractSecurityBuilder 
 +  AbstractSecurityBuilder <|-- AbstractConfiguredSecurityBuilder 
 +  AbstractConfiguredSecurityBuilder <|-- WebSecurity : ＜Filter, WebSecurity＞ 
 +   
 +  Aware <|-- ApplicationContextAware 
 +  SecurityBuilder <|-- WebSecurity : ＜Filter＞ 
 +  ApplicationContextAware <|-- WebSecurity 
 +</flow> 
 + 
 + 
 +== Authorization == 
 + 
 +[[https://docs.spring.io/spring-security/site/docs/current/reference/html5/#servlet-authorization|Docs]] 
 + 
 + 
 +== Protection Against Exploits == 
 + 
 +[[https://docs.spring.io/spring-security/site/docs/current/reference/html5/#servlet-exploits|Docs]]
  
-  * Authentication : 인증. "__유효__한 사용자인가?" 
-  * Authorization : 허가(권한 부여). 유효한 사용자가 이 작업을 __할 수 있는가__? 
back-end/spring/security.1619440300.txt.gz · Last modified: 2021/04/26 13:31 by ledyx