Char-Whitelist-Check bei Passwort raus

*/

package org.eclipse.openk.portal.auth2.util;

import java.io.*;

import java.net.URLEncoder;

import java.nio.charset.StandardCharsets;

import javax.ws.rs.core.MediaType;

import org.eclipse.openk.portal.auth2.model.JwtHeader;

import org.eclipse.openk.portal.auth2.model.KeyCloakUser;

import com.google.gson.JsonSyntaxException;

import com.google.gson.reflect.TypeToken;

import java.io.BufferedReader;

import java.io.DataOutputStream;

import java.io.IOException;

import java.io.InputStream;

import java.io.InputStreamReader;

import java.lang.reflect.Type;

import java.net.HttpURLConnection;

import java.net.URL;

  }

  public static JwtToken login(String user, String password) throws PortalInternalServerError {

    String token = sendPost(BackendConfig.getInstance().getAuthServerUrl() + "auth/realms/" +

    String token = null;

    try {

      token = sendPost(BackendConfig.getInstance().getAuthServerUrl() + "auth/realms/" +

                      BackendConfig.getInstance().getKeycloakRealm() + "/protocol/openid-connect/token",

            "username=" + user + "&password=" + password + "&client_id="

              "username=" + user + "&password=" + URLEncoder.encode(password, "UTF-8") + "&client_id="

                      + BackendConfig.getInstance().getKeycloakClient() + "&grant_type=password");

    } catch (UnsupportedEncodingException e) {

      logger.error( "Unsupported Encoding Exception: ", e);

      throw new PortalInternalServerError(e.getMessage());

    }

    return getJwtTokenFromJson(token);

  }

    try (AutoCloseable conc = con::disconnect) {

      con.setRequestMethod("POST");

      con.setRequestProperty("Content-Type", "application/x-www-form-urlencoded");

      con.setRequestProperty("Content-Type", "application/x-www-form-urlencoded; charset=utf-8");

      con.setRequestProperty("Accept", MediaType.APPLICATION_JSON);

      con.setRequestProperty("Content-Length", Integer.toString(urlParameters.getBytes().length));

      con.setRequestProperty("Content-Length", Integer.toString(urlParameters.getBytes(StandardCharsets.UTF_8.name()).length));

      con.setInstanceFollowRedirects(false);

      con.setDoOutput(true);

      // Send request

      try (DataOutputStream wr = new DataOutputStream(con.getOutputStream())) {

        wr.writeBytes(urlParameters);

        wr.write(urlParameters.getBytes(StandardCharsets.UTF_8.name()));

      }

      // Get Response

      InputStream is = con.getInputStream();

      try (BufferedReader rd = new BufferedReader(new InputStreamReader(is, "UTF-8"))) {

      try (BufferedReader rd = new BufferedReader(new InputStreamReader(is, StandardCharsets.UTF_8.name()))) {

        String line;

        while ((line = rd.readLine()) != null) {

          response.append(line);