pl.szcze.userserviceproject.CsrfHeaderFilter.java Source code

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Here is the source code for pl.szcze.userserviceproject.CsrfHeaderFilter.java

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package pl.szcze.userserviceproject;

import org.springframework.security.web.csrf.CsrfToken;
import org.springframework.stereotype.Component;
import org.springframework.web.filter.OncePerRequestFilter;
import org.springframework.web.util.WebUtils;

import javax.servlet.FilterChain;
import javax.servlet.ServletException;
import javax.servlet.http.Cookie;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;

@Component
public class CsrfHeaderFilter extends OncePerRequestFilter {

    @Override
    protected void doFilterInternal(HttpServletRequest request, HttpServletResponse response,
            FilterChain filterChain) throws ServletException, IOException {
        CsrfToken csrfToken = (CsrfToken) request.getAttribute(CsrfToken.class.getName());

        if (csrfToken != null) {
            Cookie cookie = WebUtils.getCookie(request, "XSRF-TOKEN");
            String token = csrfToken.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);
    }
}