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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.io.UnsupportedEncodingException;
  17 import java.net.URLEncoder;
  18 import java.nio.charset.StandardCharsets;
  19 import java.util.Map;
  20
  21 import javax.servlet.ServletException;
  22 import javax.servlet.http.HttpServlet;
  23 import javax.servlet.http.HttpServletRequest;
  24 import javax.servlet.http.HttpServletResponse;
  25
  26 import org.eclipse.jdt.annotation.NonNullByDefault;
  27 import org.eclipse.jdt.annotation.Nullable;
  28 import org.eclipse.jetty.http.HttpStatus;
  29 import org.openhab.binding.groheondus.internal.handler.GroheOndusAccountHandler;
  30 import org.osgi.service.http.HttpService;
  31 import org.slf4j.Logger;
  32 import org.slf4j.LoggerFactory;
  33
  34 /**
  35  * @author Florian Schmidt - Initial contribution
  36  */
  37 @NonNullByDefault
  38 public class AccountServlet extends HttpServlet {
  39     private static final long serialVersionUID = -6321196284331950479L;
  40     private final Logger logger = LoggerFactory.getLogger(AccountServlet.class);
  41
  42     private HttpService httpService;
  43     private String bridgeId;
  44     private GroheOndusAccountHandler accountHandler;
  45
  46     public AccountServlet(HttpService httpService, String bridgeId, GroheOndusAccountHandler accountHandler) {
  47         this.httpService = httpService;
  48         this.bridgeId = bridgeId;
  49         this.accountHandler = accountHandler;
  50
  51         try {
  52             httpService.registerServlet(servletUrl(), this, null, httpService.createDefaultHttpContext());
  53         } catch (Exception e) {
  54             logger.warn("Register servlet fails", e);
  55         }
  56     }
  57
  58     private String servletUrl() throws UnsupportedEncodingException {
  59         return "/groheondus/" + URLEncoder.encode(bridgeId, StandardCharsets.UTF_8.name());
  60     }
  61
  62     @Override
  63     protected void doGet(@Nullable HttpServletRequest req, @Nullable HttpServletResponse resp)
  64             throws ServletException, IOException {
  65         if (req == null || resp == null) {
  66             return;
  67         }
  68         resp.addHeader("content-type", "text/html;charset=UTF-8");
  69         StringBuilder htmlString = new StringBuilder();
  70         htmlString.append("<html>");
  71         htmlString.append("<head>");
  72         htmlString.append("<title>Set refresh token</title>");
  73         htmlString.append("</head>");
  74         htmlString.append("<body>");
  75         htmlString.append("<header>");
  76         htmlString.append("<h1>Set refresh token for accout: ");
  77         htmlString.append(bridgeId);
  78         htmlString.append("</h1>");
  79         htmlString.append("</header>");
  80         htmlString.append("<div>Has refresh token: ");
  81         if (this.accountHandler.hasRefreshToken()) {
  82             htmlString.append("yes");
  83             htmlString.append(
  84                     "<input type=\"submit\" value=\"Delete\" onclick=\"fetch(window.location.href, {method: 'DELETE'}).then(window.location.reload())\">");
  85         } else {
  86             htmlString.append("no");
  87         }
  88         htmlString.append("</div>");
  89         htmlString.append("<form method=\"post\">");
  90         htmlString.append("<label for=\"refreshToken\">Refresh Token: </label>");
  91         htmlString.append("<input type=\"text\" id=\"refreshToken\" autocomplete=\"off\" name=\"refreshToken\">");
  92         htmlString.append("<input type=\"submit\" value=\"Save\">");
  93         htmlString.append("</form>");
  94         htmlString.append("</body>");
  95         htmlString.append("</html>");
  96
  97         resp.getWriter().write(htmlString.toString());
  98     }
  99
 100     @Override
 101     protected void doPost(@Nullable HttpServletRequest req, @Nullable HttpServletResponse resp)
 102             throws ServletException, IOException {
 103         if (req == null) {
 104             return;
 105         }
 106         if (resp == null) {
 107             return;
 108         }
 109
 110         Map<String, String[]> map = req.getParameterMap();
 111         this.accountHandler.setRefreshToken(map.get("refreshToken")[0]);
 112
 113         resp.addHeader("Location", "/groheondus");
 114         resp.setStatus(HttpStatus.MOVED_TEMPORARILY_302);
 115     }
 116
 117     @Override
 118     protected void doDelete(@Nullable HttpServletRequest req, @Nullable HttpServletResponse resp)
 119             throws ServletException, IOException {
 120         if (req == null) {
 121             return;
 122         }
 123         if (resp == null) {
 124             return;
 125         }
 126
 127         this.accountHandler.deleteRefreshToken();
 128
 129         resp.setStatus(HttpStatus.OK_200);
 130     }
 131
 132     public void dispose() {
 133         try {
 134             httpService.unregister(servletUrl());
 135         } catch (UnsupportedEncodingException e) {
 136             logger.warn("Unregistration of servlet failed", e);
 137         }
 138     }
 139 }