Spring Cloud Security with WSO2 Identity Server - spring-boot

Question

I am trying to implement a spring-boot-web application, secured using spring-cloud-security with an external on-premise authentication server (WSO2 Identity Server). We're using OAuth2 OpenID Connect (JWT tokens).
My application will redirect to the WSO2 server just fine for the /oauth2/authorize request, but is failing when it tries to convert the authorization_code into an access_token. spring-boot reports a 401 authentication error.
I believe this is because the oauth2/token endpoint requires basic authentication.
Can someone guide me how to make the /oauth2/token request use basic authentication headers with spring-cloud-security?
Here's my application.yml
spring:
oauth2:
sso:
home:
secure: false
path: /,/**/*.html
client:
accessTokenUri: https://URI:9443/oauth2/token
userAuthorizationUri: https://URI:9443/oauth2/authorize
clientId: id
clientSecret: secret
scope: openid
clientAuthenticationScheme: header
resource:
userInfoUri: https://URI:9443/oauth2/userinfo?schema=openid
Here is my simple application.java
package demo;
import java.io.IOException;
import javax.servlet.Filter;
import javax.servlet.FilterChain;
import javax.servlet.ServletException;
import javax.servlet.http.Cookie;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.cloud.netflix.zuul.EnableZuulProxy;
import org.springframework.cloud.security.oauth2.sso.EnableOAuth2Sso;
import org.springframework.cloud.security.oauth2.sso.OAuth2SsoConfigurerAdapter;
import org.springframework.context.annotation.Configuration;
import org.springframework.security.config.annotation.web.builders.HttpSecurity;
import org.springframework.security.web.csrf.CsrfFilter;
import org.springframework.security.web.csrf.CsrfToken;
import org.springframework.security.web.csrf.CsrfTokenRepository;
import org.springframework.security.web.csrf.HttpSessionCsrfTokenRepository;
import org.springframework.web.filter.OncePerRequestFilter;
import org.springframework.web.util.WebUtils;
#SpringBootApplication
#EnableZuulProxy
#EnableOAuth2Sso
public class SpringOauth2WithWso2Application {
public static void main(String[] args) {
SpringApplication.run(SpringOauth2WithWso2Application.class, args);
}
#Configuration
protected static class SecurityConfiguration extends OAuth2SsoConfigurerAdapter {
#Override
public void match(RequestMatchers matchers) {
matchers.anyRequest();
}
#Override
public void configure(HttpSecurity http) throws Exception {
http.authorizeRequests().antMatchers("/index.html", "/home.html", "/")
.permitAll().anyRequest().authenticated().and().csrf()
.csrfTokenRepository(csrfTokenRepository()).and()
.addFilterAfter(csrfHeaderFilter(), CsrfFilter.class);
}
private Filter csrfHeaderFilter() {
return new OncePerRequestFilter() {
#Override
protected void doFilterInternal(HttpServletRequest request,
HttpServletResponse response, FilterChain filterChain)
throws ServletException, IOException {
CsrfToken csrf = (CsrfToken) request.getAttribute(CsrfToken.class
.getName());
if (csrf != null) {
Cookie cookie = WebUtils.getCookie(request, "XSRF-TOKEN");
String token = csrf.getToken();
if (cookie == null || token != null
&& !token.equals(cookie.getValue())) {
cookie = new Cookie("XSRF-TOKEN", token);
cookie.setPath("/");
response.addCookie(cookie);
}
}
filterChain.doFilter(request, response);
}
};
}
private CsrfTokenRepository csrfTokenRepository() {
HttpSessionCsrfTokenRepository repository = new HttpSessionCsrfTokenRepository();
repository.setHeaderName("X-XSRF-TOKEN");
return repository;
}
}
}

Answer 1

Although the need to add the WSO2 IS certificate to the Java Certificate Store has been mentioned as a solution, in case it helps anyone the steps required to do so, as well as set up mitmproxy so you can inspect the traffic has been documented here by means of a template project: https://github.com/nicodewet/template-spring-boot-oauth2-wso2-is