git.basschouten.com Git - openhab-addons.git/blob

   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.amazonechocontrol.internal;
  14
  15 import static org.openhab.binding.amazonechocontrol.internal.AmazonEchoControlBindingConstants.*;
  16
  17 import java.io.IOException;
  18 import java.io.UnsupportedEncodingException;
  19 import java.net.URISyntaxException;
  20 import java.net.URLDecoder;
  21 import java.net.URLEncoder;
  22 import java.nio.charset.StandardCharsets;
  23 import java.util.*;
  24 import java.util.stream.Collectors;
  25
  26 import javax.net.ssl.HttpsURLConnection;
  27 import javax.servlet.ServletException;
  28 import javax.servlet.http.HttpServlet;
  29 import javax.servlet.http.HttpServletRequest;
  30 import javax.servlet.http.HttpServletResponse;
  31
  32 import org.apache.commons.lang.StringEscapeUtils;
  33 import org.eclipse.jdt.annotation.NonNullByDefault;
  34 import org.eclipse.jdt.annotation.Nullable;
  35 import org.openhab.binding.amazonechocontrol.internal.handler.AccountHandler;
  36 import org.openhab.binding.amazonechocontrol.internal.jsons.JsonBluetoothStates;
  37 import org.openhab.binding.amazonechocontrol.internal.jsons.JsonBluetoothStates.BluetoothState;
  38 import org.openhab.binding.amazonechocontrol.internal.jsons.JsonBluetoothStates.PairedDevice;
  39 import org.openhab.binding.amazonechocontrol.internal.jsons.JsonDevices.Device;
  40 import org.openhab.binding.amazonechocontrol.internal.jsons.JsonMusicProvider;
  41 import org.openhab.binding.amazonechocontrol.internal.jsons.JsonNotificationSound;
  42 import org.openhab.binding.amazonechocontrol.internal.jsons.JsonPlaylists;
  43 import org.openhab.binding.amazonechocontrol.internal.jsons.JsonPlaylists.PlayList;
  44 import org.openhab.core.thing.Thing;
  45 import org.osgi.service.http.HttpService;
  46 import org.osgi.service.http.NamespaceException;
  47 import org.slf4j.Logger;
  48 import org.slf4j.LoggerFactory;
  49
  50 import com.google.gson.Gson;
  51 import com.google.gson.JsonSyntaxException;
  52
  53 /**
  54  * Provides the following functions
  55  * --- Login ---
  56  * Simple http proxy to forward the login dialog from amazon to the user through the binding
  57  * so the user can enter a captcha or other extended login information
  58  * --- List of devices ---
  59  * Used to get the device information of new devices which are currently not known
  60  * --- List of IDs ---
  61  * Simple possibility for a user to get the ids needed for writing rules
  62  *
  63  * @author Michael Geramb - Initial Contribution
  64  */
  65 @NonNullByDefault
  66 public class AccountServlet extends HttpServlet {
  67
  68     private static final long serialVersionUID = -1453738923337413163L;
  69     private static final String FORWARD_URI_PART = "/FORWARD/";
  70     private static final String PROXY_URI_PART = "/PROXY/";
  71
  72     private final Logger logger = LoggerFactory.getLogger(AccountServlet.class);
  73
  74     private final HttpService httpService;
  75     private final String servletUrlWithoutRoot;
  76     private final String servletUrl;
  77     private final AccountHandler account;
  78     private final String id;
  79     private @Nullable Connection connectionToInitialize;
  80     private final Gson gson;
  81
  82     public AccountServlet(HttpService httpService, String id, AccountHandler account, Gson gson) {
  83         this.httpService = httpService;
  84         this.account = account;
  85         this.id = id;
  86         this.gson = gson;
  87
  88         try {
  89             servletUrlWithoutRoot = "amazonechocontrol/" + URLEncoder.encode(id, "UTF8");
  90             servletUrl = "/" + servletUrlWithoutRoot;
  91
  92             httpService.registerServlet(servletUrl, this, null, httpService.createDefaultHttpContext());
  93         } catch (UnsupportedEncodingException | NamespaceException | ServletException e) {
  94             throw new IllegalStateException(e.getMessage());
  95         }
  96     }
  97
  98     private Connection reCreateConnection() {
  99         Connection oldConnection = connectionToInitialize;
 100         if (oldConnection == null) {
 101             oldConnection = account.findConnection();
 102         }
 103         return new Connection(oldConnection, this.gson);
 104     }
 105
 106     public void dispose() {
 107         httpService.unregister(servletUrl);
 108     }
 109
 110     @Override
 111     protected void doPut(@Nullable HttpServletRequest req, @Nullable HttpServletResponse resp)
 112             throws ServletException, IOException {
 113         doVerb("PUT", req, resp);
 114     }
 115
 116     @Override
 117     protected void doDelete(@Nullable HttpServletRequest req, @Nullable HttpServletResponse resp)
 118             throws ServletException, IOException {
 119         doVerb("DELETE", req, resp);
 120     }
 121
 122     @Override
 123     protected void doPost(@Nullable HttpServletRequest req, @Nullable HttpServletResponse resp)
 124             throws ServletException, IOException {
 125         doVerb("POST", req, resp);
 126     }
 127
 128     void doVerb(String verb, @Nullable HttpServletRequest req, @Nullable HttpServletResponse resp) throws IOException {
 129         if (req == null) {
 130             return;
 131         }
 132         if (resp == null) {
 133             return;
 134         }
 135         String requestUri = req.getRequestURI();
 136         if (requestUri == null) {
 137             return;
 138         }
 139         String baseUrl = requestUri.substring(servletUrl.length());
 140         String uri = baseUrl;
 141         String queryString = req.getQueryString();
 142         if (queryString != null && queryString.length() > 0) {
 143             uri += "?" + queryString;
 144         }
 145
 146         Connection connection = this.account.findConnection();
 147         if (connection != null && uri.equals("/changedomain")) {
 148             Map<String, String[]> map = req.getParameterMap();
 149             String[] domainArray = map.get("domain");
 150             if (domainArray == null) {
 151                 logger.warn("Could not determine domain");
 152                 return;
 153             }
 154             String domain = domainArray[0];
 155             String loginData = connection.serializeLoginData();
 156             Connection newConnection = new Connection(null, this.gson);
 157             if (newConnection.tryRestoreLogin(loginData, domain)) {
 158                 account.setConnection(newConnection);
 159             }
 160             resp.sendRedirect(servletUrl);
 161             return;
 162         }
 163         if (uri.startsWith(PROXY_URI_PART)) {
 164             // handle proxy request
 165
 166             if (connection == null) {
 167                 returnError(resp, "Account not online");
 168                 return;
 169             }
 170             String getUrl = "https://alexa." + connection.getAmazonSite() + "/"
 171                     + uri.substring(PROXY_URI_PART.length());
 172
 173             String postData = null;
 174             if (verb == "POST" || verb == "PUT") {
 175                 postData = req.getReader().lines().collect(Collectors.joining(System.lineSeparator()));
 176             }
 177
 178             this.handleProxyRequest(connection, resp, verb, getUrl, null, postData, true, connection.getAmazonSite());
 179             return;
 180         }
 181
 182         // handle post of login page
 183         connection = this.connectionToInitialize;
 184         if (connection == null) {
 185             returnError(resp, "Connection not in initialize mode.");
 186             return;
 187         }
 188
 189         resp.addHeader("content-type", "text/html;charset=UTF-8");
 190
 191         Map<String, String[]> map = req.getParameterMap();
 192         StringBuilder postDataBuilder = new StringBuilder();
 193         for (String name : map.keySet()) {
 194             if (postDataBuilder.length() > 0) {
 195                 postDataBuilder.append('&');
 196             }
 197
 198             postDataBuilder.append(name);
 199             postDataBuilder.append('=');
 200             String value = "";
 201             if (name.equals("failedSignInCount")) {
 202                 value = "ape:AA==";
 203             } else {
 204                 String[] strings = map.get(name);
 205                 if (strings != null && strings.length > 0 && strings[0] != null) {
 206                     value = strings[0];
 207                 }
 208             }
 209             postDataBuilder.append(URLEncoder.encode(value, StandardCharsets.UTF_8.name()));
 210         }
 211
 212         uri = req.getRequestURI();
 213         if (uri == null || !uri.startsWith(servletUrl)) {
 214             returnError(resp, "Invalid request uri '" + uri + "'");
 215             return;
 216         }
 217         String relativeUrl = uri.substring(servletUrl.length()).replace(FORWARD_URI_PART, "/");
 218
 219         String site = connection.getAmazonSite();
 220         if (relativeUrl.startsWith("/ap/signin")) {
 221             site = "amazon.com";
 222         }
 223         String postUrl = "https://www." + site + relativeUrl;
 224         queryString = req.getQueryString();
 225         if (queryString != null && queryString.length() > 0) {
 226             postUrl += "?" + queryString;
 227         }
 228         String referer = "https://www." + site;
 229         String postData = postDataBuilder.toString();
 230         handleProxyRequest(connection, resp, "POST", postUrl, referer, postData, false, site);
 231     }
 232
 233     @Override
 234     protected void doGet(@Nullable HttpServletRequest req, @Nullable HttpServletResponse resp) throws IOException {
 235         if (req == null) {
 236             return;
 237         }
 238         if (resp == null) {
 239             return;
 240         }
 241         String requestUri = req.getRequestURI();
 242         if (requestUri == null) {
 243             return;
 244         }
 245         String baseUrl = requestUri.substring(servletUrl.length());
 246         String uri = baseUrl;
 247         String queryString = req.getQueryString();
 248         if (queryString != null && queryString.length() > 0) {
 249             uri += "?" + queryString;
 250         }
 251         logger.debug("doGet {}", uri);
 252         try {
 253             Connection connection = this.connectionToInitialize;
 254             if (uri.startsWith(FORWARD_URI_PART) && connection != null) {
 255                 String getUrl = "https://www." + connection.getAmazonSite() + "/"
 256                         + uri.substring(FORWARD_URI_PART.length());
 257
 258                 this.handleProxyRequest(connection, resp, "GET", getUrl, null, null, false, connection.getAmazonSite());
 259                 return;
 260             }
 261
 262             connection = this.account.findConnection();
 263             if (uri.startsWith(PROXY_URI_PART)) {
 264                 // handle proxy request
 265
 266                 if (connection == null) {
 267                     returnError(resp, "Account not online");
 268                     return;
 269                 }
 270                 String getUrl = "https://alexa." + connection.getAmazonSite() + "/"
 271                         + uri.substring(PROXY_URI_PART.length());
 272
 273                 this.handleProxyRequest(connection, resp, "GET", getUrl, null, null, false, connection.getAmazonSite());
 274                 return;
 275             }
 276
 277             if (connection != null && connection.verifyLogin()) {
 278                 // handle commands
 279                 if (baseUrl.equals("/logout") || baseUrl.equals("/logout/")) {
 280                     this.connectionToInitialize = reCreateConnection();
 281                     this.account.setConnection(null);
 282                     resp.sendRedirect(this.servletUrl);
 283                     return;
 284                 }
 285                 // handle commands
 286                 if (baseUrl.equals("/newdevice") || baseUrl.equals("/newdevice/")) {
 287                     this.connectionToInitialize = new Connection(null, this.gson);
 288                     this.account.setConnection(null);
 289                     resp.sendRedirect(this.servletUrl);
 290                     return;
 291                 }
 292
 293                 if (baseUrl.equals("/devices") || baseUrl.equals("/devices/")) {
 294                     handleDevices(resp, connection);
 295                     return;
 296                 }
 297                 if (baseUrl.equals("/changeDomain") || baseUrl.equals("/changeDomain/")) {
 298                     handleChangeDomain(resp, connection);
 299                     return;
 300                 }
 301                 if (baseUrl.equals("/ids") || baseUrl.equals("/ids/")) {
 302                     String serialNumber = getQueryMap(queryString).get("serialNumber");
 303                     Device device = account.findDeviceJson(serialNumber);
 304                     if (device != null) {
 305                         Thing thing = account.findThingBySerialNumber(device.serialNumber);
 306                         handleIds(resp, connection, device, thing);
 307                         return;
 308                     }
 309                 }
 310                 // return hint that everything is ok
 311                 handleDefaultPageResult(resp, "The Account is logged in.", connection);
 312                 return;
 313             }
 314             connection = this.connectionToInitialize;
 315             if (connection == null) {
 316                 connection = this.reCreateConnection();
 317                 this.connectionToInitialize = connection;
 318             }
 319
 320             if (!uri.equals("/")) {
 321                 String newUri = req.getServletPath() + "/";
 322                 resp.sendRedirect(newUri);
 323                 return;
 324             }
 325
 326             String html = connection.getLoginPage();
 327             returnHtml(connection, resp, html, "amazon.com");
 328         } catch (URISyntaxException | InterruptedException e) {
 329             logger.warn("get failed with uri syntax error", e);
 330         }
 331     }
 332
 333     public Map<String, String> getQueryMap(@Nullable String query) {
 334         Map<String, String> map = new HashMap<>();
 335         if (query != null) {
 336             String[] params = query.split("&");
 337             for (String param : params) {
 338                 String[] elements = param.split("=");
 339                 if (elements.length == 2) {
 340                     String name = elements[0];
 341                     String value = "";
 342                     try {
 343                         value = URLDecoder.decode(elements[1], "UTF8");
 344                     } catch (UnsupportedEncodingException e) {
 345                         logger.info("Unsupported encoding", e);
 346                     }
 347                     map.put(name, value);
 348                 }
 349             }
 350         }
 351         return map;
 352     }
 353
 354     private void handleChangeDomain(HttpServletResponse resp, Connection connection) {
 355         StringBuilder html = createPageStart("Change Domain");
 356         html.append("<form action='");
 357         html.append(servletUrl);
 358         html.append("/changedomain' method='post'>\nDomain:\n<input type='text' name='domain' value='");
 359         html.append(connection.getAmazonSite());
 360         html.append("'>\n<br>\n<input type=\"submit\" value=\"Submit\">\n</form>");
 361
 362         createPageEndAndSent(resp, html);
 363     }
 364
 365     private void handleDefaultPageResult(HttpServletResponse resp, String message, Connection connection)
 366             throws IOException {
 367         StringBuilder html = createPageStart("");
 368         html.append(StringEscapeUtils.escapeHtml(message));
 369         // logout link
 370         html.append(" <a href='" + servletUrl + "/logout' >");
 371         html.append(StringEscapeUtils.escapeHtml("Logout"));
 372         html.append("</a>");
 373         // newdevice link
 374         html.append(" | <a href='" + servletUrl + "/newdevice' >");
 375         html.append(StringEscapeUtils.escapeHtml("Logout and create new device id"));
 376         html.append("</a>");
 377         // customer id
 378         html.append("<br>Customer Id: ");
 379         html.append(StringEscapeUtils.escapeHtml(connection.getCustomerId()));
 380         // customer name
 381         html.append("<br>Customer Name: ");
 382         html.append(StringEscapeUtils.escapeHtml(connection.getCustomerName()));
 383         // device name
 384         html.append("<br>App name: ");
 385         html.append(StringEscapeUtils.escapeHtml(connection.getDeviceName()));
 386         // connection
 387         html.append("<br>Connected to: ");
 388         html.append(StringEscapeUtils.escapeHtml(connection.getAlexaServer()));
 389         // domain
 390         html.append(" <a href='");
 391         html.append(servletUrl);
 392         html.append("/changeDomain'>Change</a>");
 393
 394         // Main UI link
 395         html.append("<br><a href='/#!/settings/things/" + BINDING_ID + ":"
 396                 + URLEncoder.encode(THING_TYPE_ACCOUNT.getId(), "UTF8") + ":" + URLEncoder.encode(id, "UTF8") + "'>");
 397         html.append(StringEscapeUtils.escapeHtml("Check Thing in Main UI"));
 398         html.append("</a><br><br>");
 399
 400         // device list
 401         html.append(
 402                 "<table><tr><th align='left'>Device</th><th align='left'>Serial Number</th><th align='left'>State</th><th align='left'>Thing</th><th align='left'>Family</th><th align='left'>Type</th><th align='left'>Customer Id</th></tr>");
 403         for (Device device : this.account.getLastKnownDevices()) {
 404
 405             html.append("<tr><td>");
 406             html.append(StringEscapeUtils.escapeHtml(nullReplacement(device.accountName)));
 407             html.append("</td><td>");
 408             html.append(StringEscapeUtils.escapeHtml(nullReplacement(device.serialNumber)));
 409             html.append("</td><td>");
 410             html.append(StringEscapeUtils.escapeHtml(device.online ? "Online" : "Offline"));
 411             html.append("</td><td>");
 412             Thing accountHandler = account.findThingBySerialNumber(device.serialNumber);
 413             if (accountHandler != null) {
 414                 html.append("<a href='" + servletUrl + "/ids/?serialNumber="
 415                         + URLEncoder.encode(device.serialNumber, "UTF8") + "'>"
 416                         + StringEscapeUtils.escapeHtml(accountHandler.getLabel()) + "</a>");
 417             } else {
 418                 html.append("<a href='" + servletUrl + "/ids/?serialNumber="
 419                         + URLEncoder.encode(device.serialNumber, "UTF8") + "'>"
 420                         + StringEscapeUtils.escapeHtml("Not defined") + "</a>");
 421             }
 422             html.append("</td><td>");
 423             html.append(StringEscapeUtils.escapeHtml(nullReplacement(device.deviceFamily)));
 424             html.append("</td><td>");
 425             html.append(StringEscapeUtils.escapeHtml(nullReplacement(device.deviceType)));
 426             html.append("</td><td>");
 427             html.append(StringEscapeUtils.escapeHtml(nullReplacement(device.deviceOwnerCustomerId)));
 428             html.append("</td>");
 429             html.append("</tr>");
 430         }
 431         html.append("</table>");
 432         createPageEndAndSent(resp, html);
 433     }
 434
 435     private void handleDevices(HttpServletResponse resp, Connection connection)
 436             throws IOException, URISyntaxException, InterruptedException {
 437         returnHtml(connection, resp,
 438                 "<html>" + StringEscapeUtils.escapeHtml(connection.getDeviceListJson()) + "</html>");
 439     }
 440
 441     private String nullReplacement(@Nullable String text) {
 442         if (text == null) {
 443             return "<unknown>";
 444         }
 445         return text;
 446     }
 447
 448     StringBuilder createPageStart(String title) {
 449         StringBuilder html = new StringBuilder();
 450         html.append("<html><head><title>"
 451                 + StringEscapeUtils.escapeHtml(BINDING_NAME + " - " + this.account.getThing().getLabel()));
 452         if (!title.isEmpty()) {
 453             html.append(" - ");
 454             html.append(StringEscapeUtils.escapeHtml(title));
 455         }
 456         html.append("</title><head><body>");
 457         html.append("<h1>" + StringEscapeUtils.escapeHtml(BINDING_NAME + " - " + this.account.getThing().getLabel()));
 458         if (!title.isEmpty()) {
 459             html.append(" - ");
 460             html.append(StringEscapeUtils.escapeHtml(title));
 461         }
 462         html.append("</h1>");
 463         return html;
 464     }
 465
 466     private void createPageEndAndSent(HttpServletResponse resp, StringBuilder html) {
 467         // account overview link
 468         html.append("<br><a href='" + servletUrl + "/../' >");
 469         html.append(StringEscapeUtils.escapeHtml("Account overview"));
 470         html.append("</a><br>");
 471
 472         html.append("</body></html>");
 473         resp.addHeader("content-type", "text/html;charset=UTF-8");
 474         try {
 475             resp.getWriter().write(html.toString());
 476         } catch (IOException e) {
 477             logger.warn("return html failed with IO error", e);
 478         }
 479     }
 480
 481     private void handleIds(HttpServletResponse resp, Connection connection, Device device, @Nullable Thing thing)
 482             throws IOException, URISyntaxException {
 483         StringBuilder html;
 484         if (thing != null) {
 485             html = createPageStart("Channel Options - " + thing.getLabel());
 486         } else {
 487             html = createPageStart("Device Information - No thing defined");
 488         }
 489         renderBluetoothMacChannel(connection, device, html);
 490         renderAmazonMusicPlaylistIdChannel(connection, device, html);
 491         renderPlayAlarmSoundChannel(connection, device, html);
 492         renderMusicProviderIdChannel(connection, html);
 493         renderCapabilities(connection, device, html);
 494         createPageEndAndSent(resp, html);
 495     }
 496
 497     private void renderCapabilities(Connection connection, Device device, StringBuilder html) {
 498         html.append("<h2>Capabilities</h2>");
 499         html.append("<table><tr><th align='left'>Name</th></tr>");
 500         device.getCapabilities().forEach(capability -> html.append("<tr><td>")
 501                 .append(StringEscapeUtils.escapeHtml(capability)).append("</td></tr>"));
 502         html.append("</table>");
 503     }
 504
 505     private void renderMusicProviderIdChannel(Connection connection, StringBuilder html) {
 506         html.append("<h2>").append(StringEscapeUtils.escapeHtml("Channel " + CHANNEL_MUSIC_PROVIDER_ID))
 507                 .append("</h2>");
 508         html.append("<table><tr><th align='left'>Name</th><th align='left'>Value</th></tr>");
 509         List<JsonMusicProvider> musicProviders = connection.getMusicProviders();
 510         for (JsonMusicProvider musicProvider : musicProviders) {
 511             List<String> properties = musicProvider.supportedProperties;
 512             String providerId = musicProvider.id;
 513             String displayName = musicProvider.displayName;
 514             if (properties != null && properties.contains("Alexa.Music.PlaySearchPhrase") && providerId != null
 515                     && !providerId.isEmpty() && "AVAILABLE".equals(musicProvider.availability) && displayName != null
 516                     && !displayName.isEmpty()) {
 517                 html.append("<tr><td>");
 518                 html.append(StringEscapeUtils.escapeHtml(displayName));
 519                 html.append("</td><td>");
 520                 html.append(StringEscapeUtils.escapeHtml(providerId));
 521                 html.append("</td></tr>");
 522             }
 523         }
 524         html.append("</table>");
 525     }
 526
 527     private void renderPlayAlarmSoundChannel(Connection connection, Device device, StringBuilder html) {
 528         html.append("<h2>").append(StringEscapeUtils.escapeHtml("Channel " + CHANNEL_PLAY_ALARM_SOUND)).append("</h2>");
 529         List<JsonNotificationSound> notificationSounds = List.of();
 530         String errorMessage = "No notifications sounds found";
 531         try {
 532             notificationSounds = connection.getNotificationSounds(device);
 533         } catch (IOException | HttpException | URISyntaxException | JsonSyntaxException | ConnectionException
 534                 | InterruptedException e) {
 535             errorMessage = e.getLocalizedMessage();
 536         }
 537         if (!notificationSounds.isEmpty()) {
 538             html.append("<table><tr><th align='left'>Name</th><th align='left'>Value</th></tr>");
 539             for (JsonNotificationSound notificationSound : notificationSounds) {
 540                 if (notificationSound.folder == null && notificationSound.providerId != null
 541                         && notificationSound.id != null && notificationSound.displayName != null) {
 542                     String providerSoundId = notificationSound.providerId + ":" + notificationSound.id;
 543
 544                     html.append("<tr><td>");
 545                     html.append(StringEscapeUtils.escapeHtml(notificationSound.displayName));
 546                     html.append("</td><td>");
 547                     html.append(StringEscapeUtils.escapeHtml(providerSoundId));
 548                     html.append("</td></tr>");
 549                 }
 550             }
 551             html.append("</table>");
 552         } else {
 553             html.append(StringEscapeUtils.escapeHtml(errorMessage));
 554         }
 555     }
 556
 557     private void renderAmazonMusicPlaylistIdChannel(Connection connection, Device device, StringBuilder html) {
 558         html.append("<h2>").append(StringEscapeUtils.escapeHtml("Channel " + CHANNEL_AMAZON_MUSIC_PLAY_LIST_ID))
 559                 .append("</h2>");
 560
 561         JsonPlaylists playLists = null;
 562         String errorMessage = "No playlists found";
 563         try {
 564             playLists = connection.getPlaylists(device);
 565         } catch (IOException | HttpException | URISyntaxException | JsonSyntaxException | ConnectionException
 566                 | InterruptedException e) {
 567             errorMessage = e.getLocalizedMessage();
 568         }
 569
 570         if (playLists != null) {
 571             Map<String, PlayList @Nullable []> playlistMap = playLists.playlists;
 572             if (playlistMap != null && !playlistMap.isEmpty()) {
 573                 html.append("<table><tr><th align='left'>Name</th><th align='left'>Value</th></tr>");
 574
 575                 for (PlayList[] innerLists : playlistMap.values()) {
 576                     {
 577                         if (innerLists != null && innerLists.length > 0) {
 578                             PlayList playList = innerLists[0];
 579                             if (playList != null && playList.playlistId != null && playList.title != null) {
 580                                 html.append("<tr><td>");
 581                                 html.append(StringEscapeUtils.escapeHtml(nullReplacement(playList.title)));
 582                                 html.append("</td><td>");
 583                                 html.append(StringEscapeUtils.escapeHtml(nullReplacement(playList.playlistId)));
 584                                 html.append("</td></tr>");
 585                             }
 586                         }
 587                     }
 588                 }
 589                 html.append("</table>");
 590             } else {
 591                 html.append(StringEscapeUtils.escapeHtml(errorMessage));
 592             }
 593         }
 594     }
 595
 596     private void renderBluetoothMacChannel(Connection connection, Device device, StringBuilder html) {
 597         html.append("<h2>").append(StringEscapeUtils.escapeHtml("Channel " + CHANNEL_BLUETOOTH_MAC)).append("</h2>");
 598         JsonBluetoothStates bluetoothStates = connection.getBluetoothConnectionStates();
 599         if (bluetoothStates == null) {
 600             return;
 601         }
 602         BluetoothState[] innerStates = bluetoothStates.bluetoothStates;
 603         if (innerStates == null) {
 604             return;
 605         }
 606         for (BluetoothState state : innerStates) {
 607             if (state == null) {
 608                 continue;
 609             }
 610             String stateDeviceSerialNumber = state.deviceSerialNumber;
 611             if ((stateDeviceSerialNumber == null && device.serialNumber == null)
 612                     || (stateDeviceSerialNumber != null && stateDeviceSerialNumber.equals(device.serialNumber))) {
 613                 List<PairedDevice> pairedDeviceList = state.getPairedDeviceList();
 614                 if (pairedDeviceList.size() > 0) {
 615                     html.append("<table><tr><th align='left'>Name</th><th align='left'>Value</th></tr>");
 616                     for (PairedDevice pairedDevice : pairedDeviceList) {
 617                         html.append("<tr><td>");
 618                         html.append(StringEscapeUtils.escapeHtml(nullReplacement(pairedDevice.friendlyName)));
 619                         html.append("</td><td>");
 620                         html.append(StringEscapeUtils.escapeHtml(nullReplacement(pairedDevice.address)));
 621                         html.append("</td></tr>");
 622                     }
 623                     html.append("</table>");
 624                 } else {
 625                     html.append(StringEscapeUtils.escapeHtml("No bluetooth devices paired"));
 626                 }
 627             }
 628         }
 629     }
 630
 631     void handleProxyRequest(Connection connection, HttpServletResponse resp, String verb, String url,
 632             @Nullable String referer, @Nullable String postData, boolean json, String site) throws IOException {
 633         HttpsURLConnection urlConnection;
 634         try {
 635             Map<String, String> headers = null;
 636             if (referer != null) {
 637                 headers = new HashMap<>();
 638                 headers.put("Referer", referer);
 639             }
 640
 641             urlConnection = connection.makeRequest(verb, url, postData, json, false, headers, 0);
 642             if (urlConnection.getResponseCode() == 302) {
 643                 {
 644                     String location = urlConnection.getHeaderField("location");
 645                     if (location.contains("/ap/maplanding")) {
 646                         try {
 647                             connection.registerConnectionAsApp(location);
 648                             account.setConnection(connection);
 649                             handleDefaultPageResult(resp, "Login succeeded", connection);
 650                             this.connectionToInitialize = null;
 651                             return;
 652                         } catch (URISyntaxException | ConnectionException e) {
 653                             returnError(resp,
 654                                     "Login to '" + connection.getAmazonSite() + "' failed: " + e.getLocalizedMessage());
 655                             this.connectionToInitialize = null;
 656                             return;
 657                         }
 658                     }
 659
 660                     String startString = "https://www." + connection.getAmazonSite() + "/";
 661                     String newLocation = null;
 662                     if (location.startsWith(startString) && connection.getIsLoggedIn()) {
 663                         newLocation = servletUrl + PROXY_URI_PART + location.substring(startString.length());
 664                     } else if (location.startsWith(startString)) {
 665                         newLocation = servletUrl + FORWARD_URI_PART + location.substring(startString.length());
 666                     } else {
 667                         startString = "/";
 668                         if (location.startsWith(startString)) {
 669                             newLocation = servletUrl + FORWARD_URI_PART + location.substring(startString.length());
 670                         }
 671                     }
 672                     if (newLocation != null) {
 673                         logger.debug("Redirect mapped from {} to {}", location, newLocation);
 674
 675                         resp.sendRedirect(newLocation);
 676                         return;
 677                     }
 678                     returnError(resp, "Invalid redirect to '" + location + "'");
 679                     return;
 680                 }
 681             }
 682         } catch (URISyntaxException | ConnectionException | InterruptedException e) {
 683             returnError(resp, e.getLocalizedMessage());
 684             return;
 685         }
 686         String response = connection.convertStream(urlConnection);
 687         returnHtml(connection, resp, response, site);
 688     }
 689
 690     private void returnHtml(Connection connection, HttpServletResponse resp, String html) {
 691         returnHtml(connection, resp, html, connection.getAmazonSite());
 692     }
 693
 694     private void returnHtml(Connection connection, HttpServletResponse resp, String html, String amazonSite) {
 695         String resultHtml = html.replace("action=\"/", "action=\"" + servletUrl + "/")
 696                 .replace("action=\"&#x2F;", "action=\"" + servletUrl + "/")
 697                 .replace("https://www." + amazonSite + "/", servletUrl + "/")
 698                 .replace("https://www." + amazonSite + ":443" + "/", servletUrl + "/")
 699                 .replace("https:&#x2F;&#x2F;www." + amazonSite + "&#x2F;", servletUrl + "/")
 700                 .replace("https:&#x2F;&#x2F;www." + amazonSite + ":443" + "&#x2F;", servletUrl + "/")
 701                 .replace("http://www." + amazonSite + "/", servletUrl + "/")
 702                 .replace("http:&#x2F;&#x2F;www." + amazonSite + "&#x2F;", servletUrl + "/");
 703
 704         resp.addHeader("content-type", "text/html;charset=UTF-8");
 705         try {
 706             resp.getWriter().write(resultHtml);
 707         } catch (IOException e) {
 708             logger.warn("return html failed with IO error", e);
 709         }
 710     }
 711
 712     void returnError(HttpServletResponse resp, @Nullable String errorMessage) {
 713         try {
 714             String message = errorMessage != null ? errorMessage : "null";
 715             resp.getWriter().write("<html>" + StringEscapeUtils.escapeHtml(message) + "<br><a href='" + servletUrl
 716                     + "'>Try again</a></html>");
 717         } catch (IOException e) {
 718             logger.info("Returning error message failed", e);
 719         }
 720     }
 721 }