使用java配置在单个应用程序中实现多种身份验证机制

Question

@Configuration
@EnableWebMvcSecurity
public class SecurityConfig extends WebSecurityConfigurerAdapter {

@Override
protected void configure(HttpSecurity http) throws Exception {
    http
        .csrf().disable()
        .authorizeRequests()
            .anyRequest().fullyAuthenticated()
            .and()
            .httpBasic();
}

@Configuration
protected static class AuthenticationConfiguration extends GlobalAuthenticationConfigurerAdapter {

    @Value("${ldap-${env}.manager.dn}")
    private String managerDn;

    @Value("${ldap-${env}.manager.pass}")
    private String managerPass;

    @Value("${ldap-${env}.server.url}")
    private String url;

    @Value("${ldap.password.attribute:userPassword}")
    private String passwordAttr;

    @Override
    public void init(AuthenticationManagerBuilder auth) throws Exception {
        auth.ldapAuthentication().userDnPatterns("uid={0},ou=people").groupSearchBase("ou=groups")
                .groupSearchFilter("(member={0})").userSearchBase("ou=people").userSearchFilter("(uid={0})")
                .userDetailsContextMapper(new CustomLdapPersonContextMapper())
                // .passwordCompare()
                // .passwordAttribute(passwordAttr)
                // .passwordEncoder(new PlaintextPasswordEncoder())
                // .and()
                .contextSource().managerDn(managerDn).managerPassword(managerPass).url(url);
    }
}
}

但是，在某些情况下，用户可能会带着一个会话令牌进来，该令牌可以从会话密钥服务器进行身份验证，有效令牌返回一个用户名，然后可以使用该用户从LDAP加载Authridization信息。因此，我的第二个身份验证机制应该首先进行，如果会话令牌存在于http头中，则应该执行令牌身份验证，然后进行ldap查找，如果没有会话令牌，则应该使用当前的身份验证机制。如何添加第二层身份验证。

Answer 1

在使用纯java配置时，我花了相当多的时间来考虑Spring Security性。要使其发挥作用需要几个步骤。应该是沿着这条线的东西。基本流程如下：

>

创建自定义筛选器以检查特定授权信息的请求

每个筛选器返回null（如果未找到该类型的授权），或自定义AbstractAuthenticationToken

还要确保在过滤器的构造函数中设置ant匹配器，以控制过滤器应用的url模式。例如，ldap请求筛选器可能需要与任何请求“/*”一起检查，而用户名/密码筛选器只能在post的to/login或类似的情况下检查。

示例代码：

1）为要支持的每种身份验证类型创建自定义AuthenticationToken

public class LDAPAuthorizationToken extends AbstractAuthenticationToken {
    private String token;

    public LDAPAuthorizationToken( String token ) {
        super( null );
        this.token = token;
    }

    public Object getCredentials() {
        return token;
    }

    public Object getPrincipal() {
        return null;
    }
}

public class OTPAuthorizationToken extends UsernamePasswordAuthenticationToken {
    private String otp;

    public OTPAuthorizationToken( String username, String password, String otp ) {
        super( username, password );
        this.otp = otp;
    }

    public String getOTP() {
        return otp;
    }
}

public class LDAPAuthorizationFilter extends AbstractAuthenticationProcessingFilter {
    @Autowired
    private UserDetailsService userDetailsService;

    public LDAPAuthorizationFilter() {
        super( "/*" ); // allow any request to contain an authorization header
    }

    public Authentication attemptAuthentication( HttpServletRequest request, HttpServletResponse response ) throws AuthenticationException
    {

        if ( request.getHeader( "Authorization" ) == null ) {
            return null; // no header found, continue on to other security filters
        }

        // return a new authentication token to be processed by the authentication provider
        return new LDAPAuthorizationToken( request.getHeader( "Authorization" ) );
    }
}

public class OTPAuthorizationFilter extends AbstractAuthenticationProcessingFilter {
    @Autowired
    private UserDetailsService userDetailsService;

    public OTPAuthorizationFilter() {
        super( "/otp_login" );
    }

    public Authentication attemptAuthentication( HttpServletRequest request, HttpServletResponse response ) throws AuthenticationException
    {

        if ( request.getParameter( "username" ) == null || request.getParameter( "password" ) == null || request.getParameter( "otp" ) == null ) {
            return null;
        }

        // return a new authentication token to be processed by the authentication provider
        return new OTPAuthorizationToken( request.getParameter( "username" ), request.getParameter( "password" ), request.getParameter( "otp" ) );
    }
}

public class LDAPAuthenticationProvider implements AuthenticationProvider {

    @Autowired
    private MyAuthenticationService sampleService;

    @Override
    public Authentication authenticate( Authentication authentication ) throws AuthenticationException {
        LDAPAuthorizationToken auth = (LDAPAuthorizationToken)authentication;

        String username = sampleService.verifyToken( auth.getCredentials() );
        if ( username == null ) {
            throw new LoginException( "Invalid Token" );
        }

        auth.setAuthenticated( true );

        return auth;
    }

    @Override
    public boolean supports( Class<?> authentication ) {
        if ( authentication.isAssignableFrom( LDAPAuthorizationToken.class ) ) {
            return true;
        }
        return false;
    }
}

public class OTPAuthenticationProvider implements AuthenticationProvider {

    @Autowired
    private MyAuthenticationService sampleService;

    @Override
    public Authentication authenticate( Authentication authentication ) throws AuthenticationException {
        OTPAuthorizationToken auth = (OTPAuthorizationToken)authentication;

        String error = sampleService.loginWithOTP( auth.getPrincipal(), auth.getCredentials(), auth.getOTP() );
        if ( error != null ) {
            throw new LoginException( error );
        }

        auth.setAuthenticated( true );

        return auth;
    }

    @Override
    public boolean supports( Class<?> authentication ) {
        if ( authentication.isAssignableFrom( OTPAuthorizationToken.class ) ) {
            return true;
        }
        return false;
    }
}

public class SecurityConfiguration extends WebSecurityConfigurerAdapter {
    @Override
    protected void configure( HttpSecurity http ) throws Exception {
        // configure filters
        http.addFilterBefore( new LDAPAuthorizationFilter(), UsernamePasswordAuthenticationFilter.class );
        http.addFilterBefore( new OTPAuthorizationFilter(), UsernamePasswordAuthenticationFilter.class );

        // configure authentication providers
        http.authenticationProvider( new LDAPAuthenticationProvider() );
        http.authenticationProvider( new OTPAuthenticationProvider() );

        // disable csrf
        http.csrf().disable();

        // setup security
        http.authorizeRequests()
            .anyRequest()
                .fullyAuthenticated()
                .and().httpBasic();
    }
}