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   1 /**
   2  * Copyright (c) 2010-2021 Contributors to the openHAB project
   3  *
   4  * See the NOTICE file(s) distributed with this work for additional
   5  * information.
   6  *
   7  * This program and the accompanying materials are made available under the
   8  * terms of the Eclipse Public License 2.0 which is available at
   9  * http://www.eclipse.org/legal/epl-2.0
  10  *
  11  * SPDX-License-Identifier: EPL-2.0
  12  */
  13 package org.openhab.binding.groheondus.internal;
  14
  15 import java.io.IOException;
  16 import java.net.URLEncoder;
  17 import java.nio.charset.StandardCharsets;
  18 import java.util.Map;
  19
  20 import javax.servlet.ServletException;
  21 import javax.servlet.http.HttpServlet;
  22 import javax.servlet.http.HttpServletRequest;
  23 import javax.servlet.http.HttpServletResponse;
  24
  25 import org.eclipse.jdt.annotation.NonNullByDefault;
  26 import org.eclipse.jdt.annotation.Nullable;
  27 import org.eclipse.jetty.http.HttpStatus;
  28 import org.openhab.binding.groheondus.internal.handler.GroheOndusAccountHandler;
  29 import org.osgi.service.http.HttpService;
  30 import org.slf4j.Logger;
  31 import org.slf4j.LoggerFactory;
  32
  33 /**
  34  * @author Florian Schmidt - Initial contribution
  35  */
  36 @NonNullByDefault
  37 public class AccountServlet extends HttpServlet {
  38     private static final long serialVersionUID = -6321196284331950479L;
  39     private final Logger logger = LoggerFactory.getLogger(AccountServlet.class);
  40
  41     private HttpService httpService;
  42     private String bridgeId;
  43     private GroheOndusAccountHandler accountHandler;
  44
  45     public AccountServlet(HttpService httpService, String bridgeId, GroheOndusAccountHandler accountHandler) {
  46         this.httpService = httpService;
  47         this.bridgeId = bridgeId;
  48         this.accountHandler = accountHandler;
  49
  50         try {
  51             httpService.registerServlet(servletUrl(), this, null, httpService.createDefaultHttpContext());
  52         } catch (Exception e) {
  53             logger.warn("Register servlet fails", e);
  54         }
  55     }
  56
  57     private String servletUrl() {
  58         return "/groheondus/" + URLEncoder.encode(bridgeId, StandardCharsets.UTF_8);
  59     }
  60
  61     @Override
  62     protected void doGet(@Nullable HttpServletRequest req, @Nullable HttpServletResponse resp)
  63             throws ServletException, IOException {
  64         if (req == null || resp == null) {
  65             return;
  66         }
  67         resp.addHeader("content-type", "text/html;charset=UTF-8");
  68         StringBuilder htmlString = new StringBuilder();
  69         htmlString.append("<html>");
  70         htmlString.append("<head>");
  71         htmlString.append("<title>Set refresh token</title>");
  72         htmlString.append("</head>");
  73         htmlString.append("<body>");
  74         htmlString.append("<header>");
  75         htmlString.append("<h1>Set refresh token for accout: ");
  76         htmlString.append(bridgeId);
  77         htmlString.append("</h1>");
  78         htmlString.append("</header>");
  79         htmlString.append("<div>Has refresh token: ");
  80         if (this.accountHandler.hasRefreshToken()) {
  81             htmlString.append("yes");
  82             htmlString.append(
  83                     "<input type=\"submit\" value=\"Delete\" onclick=\"fetch(window.location.href, {method: 'DELETE'}).then(window.location.reload())\">");
  84         } else {
  85             htmlString.append("no");
  86         }
  87         htmlString.append("</div>");
  88         htmlString.append("<form method=\"post\">");
  89         htmlString.append("<label for=\"refreshToken\">Refresh Token: </label>");
  90         htmlString.append("<input type=\"text\" id=\"refreshToken\" autocomplete=\"off\" name=\"refreshToken\">");
  91         htmlString.append("<input type=\"submit\" value=\"Save\">");
  92         htmlString.append("</form>");
  93         htmlString.append("</body>");
  94         htmlString.append("</html>");
  95
  96         resp.getWriter().write(htmlString.toString());
  97     }
  98
  99     @Override
 100     protected void doPost(@Nullable HttpServletRequest req, @Nullable HttpServletResponse resp)
 101             throws ServletException, IOException {
 102         if (req == null) {
 103             return;
 104         }
 105         if (resp == null) {
 106             return;
 107         }
 108
 109         Map<String, String[]> map = req.getParameterMap();
 110         this.accountHandler.setRefreshToken(map.get("refreshToken")[0]);
 111
 112         resp.addHeader("Location", "/groheondus");
 113         resp.setStatus(HttpStatus.MOVED_TEMPORARILY_302);
 114     }
 115
 116     @Override
 117     protected void doDelete(@Nullable HttpServletRequest req, @Nullable HttpServletResponse resp)
 118             throws ServletException, IOException {
 119         if (req == null) {
 120             return;
 121         }
 122         if (resp == null) {
 123             return;
 124         }
 125
 126         this.accountHandler.deleteRefreshToken();
 127
 128         resp.setStatus(HttpStatus.OK_200);
 129     }
 130
 131     public void dispose() {
 132         httpService.unregister(servletUrl());
 133     }
 134 }