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import it.inaf.ia2.aa.AuthConfig;
import it.inaf.ia2.rap.client.RapClient;
import javax.servlet.Filter;
import javax.servlet.FilterChain;
import javax.servlet.ServletException;
import javax.servlet.ServletRequest;
import javax.servlet.ServletResponse;
import javax.servlet.http.HttpServletRequest;
public class ClientDbFilter implements Filter {
public static final String CLIENT_DB = "client_db";
private final RapClient rapClient;
private final String defaultJwksUri;
public ClientDbFilter(AuthConfig authConfig, RapClient rapClient) {
this.rapClient = rapClient;
defaultJwksUri = URI.create(authConfig.getRapBaseUri()).resolve(authConfig.getJwksEndpoint()).toString();
@Override
public void doFilter(ServletRequest req, ServletResponse res, FilterChain fc) throws IOException, ServletException {
HttpServletRequest request = (HttpServletRequest) req;
String clientDb = request.getParameter(CLIENT_DB);
if (clientDb != null) {
request.getSession().setAttribute(CLIENT_DB, clientDb);
String newUrl = defaultJwksUri.replaceAll("\\?client_name=(.*)", "?client_name=" + clientDb);
rapClient.addJwksUri(URI.create(newUrl));