Spring Security OAuth2 Provider 之 自定义开发

Spring OAuth2默认提供的功能难免无法满足需求，需要特殊定制，这里列举常见的几个需要特殊开发的地方。

相关文章：
[url=http://rensanning.iteye.com/blog/2384996]Spring Security OAuth2 Provider 之 最小实现[/url]
[url=http://rensanning.iteye.com/blog/2385162]Spring Security OAuth2 Provider 之 数据库存储[/url]
[url=http://rensanning.iteye.com/blog/2386309]Spring Security OAuth2 Provider 之 第三方登录简单演示[/url]
[url=http://rensanning.iteye.com/blog/2386553]Spring Security OAuth2 Provider 之 自定义开发[/url]
[url=http://rensanning.iteye.com/blog/2386766]Spring Security OAuth2 Provider 之 整合JWT[/url]

[b]（1）自定义生成授权码[/b]

默认规则是：6位随机英数字。
可以通过扩展AuthorizationCodeServices来覆写已有的生成规则。通过覆写createAuthorizationCode()方法可以设置成任意的生成规则。
比如，这里实现返回32位随机英数字。

@Configuration
@EnableAuthorizationServer
public class AuthorizationServerConfiguration extends AuthorizationServerConfigurerAdapter {

	@Bean
	protected AuthorizationCodeServices authorizationCodeServices() {
	    return new CustomJdbcAuthorizationCodeServices(dataSource());
	}

}

public class CustomJdbcAuthorizationCodeServices extends JdbcAuthorizationCodeServices {

	private RandomValueStringGenerator generator = new RandomValueStringGenerator();

	public CustomJdbcAuthorizationCodeServices(DataSource dataSource) {
		super(dataSource);
		this.generator = new RandomValueStringGenerator(32);
	}

	public String createAuthorizationCode(OAuth2Authentication authentication) {
		String code = this.generator.generate();
		store(code, authentication);
		return code;
	}

}

效果如下：
[img]http://dl2.iteye.com/upload/attachment/0126/2143/21aa5ff9-b782-386d-8643-dfff179061cd.png[/img]

[b]（2）自定义生成令牌[/b]

默认规则是：UUID。
Spring OAuth2提供了一个操作Token的接口TokenEnhancer，通过实现它可以任意操作accessToken和refreshToken。比如，这里实现将Token中的横线去掉。

@Configuration
@EnableAuthorizationServer
public class AuthorizationServerConfiguration extends AuthorizationServerConfigurerAdapter {

	@Bean
	public TokenEnhancer tokenEnhancer() {
	    return new CustomTokenEnhancer();
	}

}

public class CustomTokenEnhancer implements TokenEnhancer {

	@Override
	public OAuth2AccessToken enhance(OAuth2AccessToken accessToken, OAuth2Authentication authentication) {
		if (accessToken instanceof DefaultOAuth2AccessToken) {
			DefaultOAuth2AccessToken token = ((DefaultOAuth2AccessToken) accessToken);
			token.setValue(getNewToken());

			OAuth2RefreshToken refreshToken = token.getRefreshToken();
			if (refreshToken instanceof DefaultOAuth2RefreshToken) {
				token.setRefreshToken(new DefaultOAuth2RefreshToken(getNewToken()));
			}

			Map<String, Object> additionalInformation = new HashMap<String, Object>();
			additionalInformation.put("client_id", authentication.getOAuth2Request().getClientId());
			token.setAdditionalInformation(additionalInformation);

			return token;
		}
		return accessToken;
	}

	private String getNewToken() {
		return UUID.randomUUID().toString().replace("-", "");
	}

}

效果如下：
[img]http://dl2.iteye.com/upload/attachment/0126/2145/ff21e53b-f0c5-3c2c-ac12-72df7bc9d9f2.png[/img]

[b]（3）自定义授权页面[/b]

默认的定义如下：
org.springframework.security.oauth2.provider.endpoint.AuthorizationEndpoint
[quote] private String userApprovalPage = "forward:/oauth/confirm_access";
private String errorPage = "forward:/oauth/error";[/quote]

org.springframework.security.oauth2.provider.endpoint.WhitelabelApprovalEndpoint
[quote] @RequestMapping({"/oauth/confirm_access"})
public ModelAndView getAccessConfirmation(Map<String, Object> model, HttpServletRequest request) throws Exception {
// ...
}[/quote]

org.springframework.security.oauth2.provider.endpoint.WhitelabelErrorEndpoint
[quote] @RequestMapping({"/oauth/error"})
public ModelAndView handleError(HttpServletRequest request) {
// ...
}[/quote]

设置新的URL：

@Configuration
@EnableAuthorizationServer
public class AuthorizationServerConfiguration extends AuthorizationServerConfigurerAdapter {
    @Autowired
    private AuthorizationEndpoint authorizationEndpoint;

    @PostConstruct
    public void init() {
        authorizationEndpoint.setUserApprovalPage("forward:/oauth/my_approval_page");
        authorizationEndpoint.setErrorPage("forward:/oauth/my_error_page");
    }
}

页面实现：

@Controller
@SessionAttributes({ "authorizationRequest" })
public class OAuthController {

	@RequestMapping({ "/oauth/my_approval_page" })
	public String getAccessConfirmation(Map<String, Object> model, HttpServletRequest request) throws Exception {
		@SuppressWarnings("unchecked")
		Map<String, String> scopes = (Map<String, String>) (model.containsKey("scopes") ? model.get("scopes") : request.getAttribute("scopes"));
		List<String> scopeList = new ArrayList<String>();
		for (String scope : scopes.keySet()) {
			scopeList.add(scope);
		}
		model.put("scopeList", scopeList);
		return "oauth_approval";
	}

	@RequestMapping({ "/oauth/my_error_page" })
	public String handleError(Map<String, Object> model, HttpServletRequest request) {
		Object error = request.getAttribute("error");
		String errorSummary;
		if (error instanceof OAuth2Exception) {
			OAuth2Exception oauthError = (OAuth2Exception) error;
			errorSummary = HtmlUtils.htmlEscape(oauthError.getSummary());
		} else {
			errorSummary = "Unknown error";
		}
		model.put("errorSummary", errorSummary);
		return "oauth_error";
	}
}

/src/main/resources/templates/oauth_approval.html

<!DOCTYPE HTML>
<html xmlns="http://www.w3.org/1999/xhtml"
      xmlns:th="http://www.thymeleaf.org">
<head>
  <title>approval</title>
  <meta charset="utf-8"/>
</head>
<body>
  <div class="container">
    <div class="row">
      <div class="col-md-12 well">
        <h3>授权页</h3>
        应用名 : <span th:text="${session.authorizationRequest.clientId}">clientId</span>

		<form id='confirmationForm' name='confirmationForm' th:action="@{/oauth/authorize}" method='post'>
			<input name='user_oauth_approval' value='true' type='hidden' />
			<input th:name="${s}" value="true" type="hidden" th:each="s : ${scopeList}" />
			<input name='authorize' value='授权' type='submit' />
		</form>
	  </div>
    </div>
  </div>
</body>
</html>

/src/main/resources/templates/oauth_error.html

<!DOCTYPE HTML>
<html xmlns="http://www.w3.org/1999/xhtml"
      xmlns:th="http://www.thymeleaf.org">
<head>
  <title>error</title>
  <meta charset="utf-8"/>
</head>
<body>
  <div class="container">
    <div class="row">
      <div class="col-md-12 well">
        <h3>错误</h3>
        <p style="color:red;">出错了！不能继续授权操作！</p>
        <p th:utext="${errorSummary}">errorSummary
      </div>
    </div>
  </div>
</body>
</html>

效果如下：
[img]http://dl2.iteye.com/upload/attachment/0126/2151/a1714717-d5c2-3537-bc6f-8ddb3ee90787.png[/img]
[img]http://dl2.iteye.com/upload/attachment/0126/2149/89e4a7f9-7ca9-38cf-adee-5574b27e9c76.png[/img]

[b]（4）自定义用户登录页面[/b]
这部分应该属于SpringSecurity范畴的。

[b]创建用户表[/b]

CREATE TABLE account
(
  id serial NOT NULL,
  user_name character varying(50),
  email character varying(255),
  password character varying(512),
  role_string character varying(50),
  CONSTRAINT account_pkey PRIMARY KEY (id)
);

INSERT INTO account(user_name, email, password, role_string)
    VALUES ('user', 'user@sample.com', '123', 'ROLE_USER');

[b]配置SpringSecurity[/b]

@Configuration
@Order(SecurityProperties.ACCESS_OVERRIDE_ORDER)
@EnableWebSecurity
static class SecurityConfig extends WebSecurityConfigurerAdapter {
    @Override
    protected void configure(AuthenticationManagerBuilder auth) throws Exception {
        auth.authenticationProvider(authenticationProvider);
    }

    @Override
    protected void configure(HttpSecurity http) throws Exception {
      http.csrf().disable();

      http.antMatcher("/oauth/**")
        .authorizeRequests()
          .antMatchers("/oauth/index").permitAll()
          .antMatchers("/oauth/token").permitAll()
          .antMatchers("/oauth/check_token").permitAll()
          .antMatchers("/oauth/confirm_access").permitAll()
          .antMatchers("/oauth/error").permitAll()
          .antMatchers("/oauth/my_approval_page").permitAll()
          .antMatchers("/oauth/my_error_page").permitAll()
          .anyRequest().authenticated()
        .and()
          .formLogin()
          .loginPage("/oauth/index")
          .loginProcessingUrl("/oauth/login");
    }
    @Autowired
    private CustomAuthenticationProvider authenticationProvider;
}

@Configuration
@MapperScan("com.rensanning")
@EnableTransactionManagement(proxyTargetClass = true)
static class RepositoryConfig {
}

[b]用户登录处理部分[/b]

@Component
public class CustomAuthenticationProvider implements AuthenticationProvider {

  @Autowired
  private AccountService accountService;

  @Override
  public Authentication authenticate(Authentication authentication) throws AuthenticationException {

    String name = authentication.getName();
    String password = authentication.getCredentials().toString();

    Account account = accountService.authUser(name, password);
    if (account == null) {
      throw new AuthenticationCredentialsNotFoundException("Account is not found.");
    }

    List<GrantedAuthority> grantedAuths = AuthorityUtils.createAuthorityList(account.getRoleString());
    return new UsernamePasswordAuthenticationToken(name, password, grantedAuths);
  }

  @Override
  public boolean supports(Class<?> authentication) {
    return authentication.equals(UsernamePasswordAuthenticationToken.class);
  }
}

@Service
public class AccountService {

  @Autowired
  private AccountRepository accountRepository;

  public Account authUser(String userName, String password) {
    Account u = accountRepository.findByUserName(userName);
    if (u == null) {
      return null;
    }
    if (!u.getPassword().equals(password)) {
      return null;
    }
    return u;
  }

}

public interface AccountRepository {
  @Select("select id, user_name as userName, email, password, role_string as roleString from account where user_name=#{user_name}")
  Account findByUserName(String userName);
}

@SuppressWarnings("serial")
public class Account implements Serializable {
  private Integer id;
  private String userName;
  private String email;
  private String password;
  private String roleString;
  // ...setter/getter
}

[img]http://dl2.iteye.com/upload/attachment/0126/2177/3dd3a570-5a62-37bd-a16e-63c565e936ff.png[/img]

完成的Client->ResoureServer->AuthServer的执行过程：
[img]http://dl2.iteye.com/upload/attachment/0126/2179/43f6a1b9-486b-3b4a-acd0-0cba13dd74d1.gif[/img]

参考：
https://stackoverflow.com/questions/29618658/spring-how-to-create-a-custom-access-and-refresh-oauth2-token
https://stackoverflow.com/questions/29345508/spring-oauth2-custom-oauth-approval-page-at-oauth-authorize