Spring Security - How to catch Authenticatin Exception from custom Authentication provider - spring

Question

I'm trying the catch and customize Authentication exception thrown in Customized Authentication Filter but once the exception is thrown it always goes to the provider manager class and sends default spring API error response.
WebSecurity Config class
#Configuration
public static class RestAPISecurityConfiguration extends WebSecurityConfigurerAdapter {
#Autowired
AuthenticationEntry authenticationEntryPoint;
#Autowired
BasicAuthenticationProvider customAuthProvider;
#Autowired
AuthenticationFailureHandler accessDeniedHandler;
private final RequestMatcher PROTECTED_URLS = new OrRequestMatcher(
new AntPathRequestMatcher(API_PATH_IDENTIFIER));
#Value("${username}")
private String userName;
#Value("${password}")
private String password;
#Override
public void configure(AuthenticationManagerBuilder auth) throws Exception {
auth.authenticationProvider(customAuthProvider);
auth.inMemoryAuthentication().withUser("abcd").password(passwordEncoder().encode("sample#123"))
.roles("USER");
}
#Override
protected void configure(HttpSecurity http) throws Exception {
http.httpBasic().and().authorizeRequests().antMatchers("/api")
.authenticated().and().exceptionHandling().authenticationEntryPoint(authenticationEntryPoint).and()
.sessionManagement().sessionCreationPolicy(SessionCreationPolicy.STATELESS);
}
#Bean
public PasswordEncoder passwordEncoder() {
return new BCryptPasswordEncoder();
}
#Override
public void configure(WebSecurity web) {
web.ignoring().antMatchers(SECURITY_EXCLUDED_PATHS);
}
}
AuthenticationProvider class:
#Component
public class BasicAuthenticationProvider implements AuthenticationProvider {
#Autowired
#Qualifier("handlerExceptionResolver")
private HandlerExceptionResolver resolver;
#Override
public Authentication authenticate(Authentication auth) throws UserAuthenticationException
{
String username = auth.getName();
String password = auth.getCredentials()
.toString();
AuthenticationException exception = null;
try {
if ("abcd".equals(username) && "Sample#123".equals(password)) {
return new UsernamePasswordAuthenticationToken
(username, password, Collections.emptyList());
} else {
throw new BadCredentialsException("invalid user");
}
}catch(AuthenticationException e)
{
exception = e;
throw exception;
}
}
#Override
public boolean supports(Class<?> auth) {
return auth.equals(UsernamePasswordAuthenticationToken.class);
}
}
AuthenticationEntryPOint class:
/**
*
* Authentication entry point to handle security exceptions
*
*/
#Component
public class AuthenticationEntry implements AuthenticationEntryPoint{
#Autowired
#Qualifier("handlerExceptionResolver")
private HandlerExceptionResolver resolver;
/**
*This handles security exceptions and redirects it to exception handler
*/
#Override
public void commence(HttpServletRequest httpServletRequest, HttpServletResponse httpServletResponse, AuthenticationException e) throws UserAuthenticationException {
httpServletResponse.setStatus(HttpStatus.UNAUTHORIZED.value());
resolver.resolveException(httpServletRequest, httpServletResponse, null, new UserAuthenticationException("Not Authorized"));
}
}

Answer 1

you can do the exception in the filterChain