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

   1 /**
   2  * Copyright (c) 2010-2020 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.HashMap;
  24 import java.util.List;
  25 import java.util.Map;
  26 import java.util.stream.Collectors;
  27
  28 import javax.net.ssl.HttpsURLConnection;
  29 import javax.servlet.ServletException;
  30 import javax.servlet.http.HttpServlet;
  31 import javax.servlet.http.HttpServletRequest;
  32 import javax.servlet.http.HttpServletResponse;
  33
  34 import org.apache.commons.lang.StringEscapeUtils;
  35 import org.eclipse.jdt.annotation.NonNullByDefault;
  36 import org.eclipse.jdt.annotation.Nullable;
  37 import org.openhab.binding.amazonechocontrol.internal.handler.AccountHandler;
  38 import org.openhab.binding.amazonechocontrol.internal.jsons.JsonBluetoothStates;
  39 import org.openhab.binding.amazonechocontrol.internal.jsons.JsonBluetoothStates.BluetoothState;
  40 import org.openhab.binding.amazonechocontrol.internal.jsons.JsonBluetoothStates.PairedDevice;
  41 import org.openhab.binding.amazonechocontrol.internal.jsons.JsonDevices.Device;
  42 import org.openhab.binding.amazonechocontrol.internal.jsons.JsonMusicProvider;
  43 import org.openhab.binding.amazonechocontrol.internal.jsons.JsonNotificationSound;
  44 import org.openhab.binding.amazonechocontrol.internal.jsons.JsonPlaylists;
  45 import org.openhab.binding.amazonechocontrol.internal.jsons.JsonPlaylists.PlayList;
  46 import org.openhab.core.thing.Thing;
  47 import org.osgi.service.http.HttpService;
  48 import org.osgi.service.http.NamespaceException;
  49 import org.slf4j.Logger;
  50 import org.slf4j.LoggerFactory;
  51
  52 import com.google.gson.Gson;
  53 import com.google.gson.JsonSyntaxException;
  54
  55 /**
  56  * Provides the following functions
  57  * --- Login ---
  58  * Simple http proxy to forward the login dialog from amazon to the user through the binding
  59  * so the user can enter a captcha or other extended login information
  60  * --- List of devices ---
  61  * Used to get the device information of new devices which are currently not known
  62  * --- List of IDs ---
  63  * Simple possibility for a user to get the ids needed for writing rules
  64  *
  65  * @author Michael Geramb - Initial Contribution
  66  */
  67 @NonNullByDefault
  68 public class AccountServlet extends HttpServlet {
  69
  70     private static final long serialVersionUID = -1453738923337413163L;
  71     private static final String FORWARD_URI_PART = "/FORWARD/";
  72     private static final String PROXY_URI_PART = "/PROXY/";
  73
  74     private final Logger logger = LoggerFactory.getLogger(AccountServlet.class);
  75
  76     private final HttpService httpService;
  77     private final String servletUrlWithoutRoot;
  78     private final String servletUrl;
  79     private final AccountHandler account;
  80     private final String id;
  81     private @Nullable Connection connectionToInitialize;
  82     private final Gson gson;
  83
  84     public AccountServlet(HttpService httpService, String id, AccountHandler account, Gson gson) {
  85         this.httpService = httpService;
  86         this.account = account;
  87         this.id = id;
  88         this.gson = gson;
  89
  90         try {
  91             servletUrlWithoutRoot = "amazonechocontrol/" + URLEncoder.encode(id, "UTF8");
  92             servletUrl = "/" + servletUrlWithoutRoot;
  93
  94             httpService.registerServlet(servletUrl, this, null, httpService.createDefaultHttpContext());
  95         } catch (UnsupportedEncodingException | NamespaceException | ServletException e) {
  96             throw new IllegalStateException(e.getMessage());
  97         }
  98     }
  99
 100     private Connection reCreateConnection() {
 101         Connection oldConnection = connectionToInitialize;
 102         if (oldConnection == null) {
 103             oldConnection = account.findConnection();
 104         }
 105         return new Connection(oldConnection, this.gson);
 106     }
 107
 108     public void dispose() {
 109         httpService.unregister(servletUrl);
 110     }
 111
 112     @Override
 113     protected void doPut(@Nullable HttpServletRequest req, @Nullable HttpServletResponse resp)
 114             throws ServletException, IOException {
 115         doVerb("PUT", req, resp);
 116     }
 117
 118     @Override
 119     protected void doDelete(@Nullable HttpServletRequest req, @Nullable HttpServletResponse resp)
 120             throws ServletException, IOException {
 121         doVerb("DELETE", req, resp);
 122     }
 123
 124     @Override
 125     protected void doPost(@Nullable HttpServletRequest req, @Nullable HttpServletResponse resp)
 126             throws ServletException, IOException {
 127         doVerb("POST", req, resp);
 128     }
 129
 130     void doVerb(String verb, @Nullable HttpServletRequest req, @Nullable HttpServletResponse resp) throws IOException {
 131         if (req == null) {
 132             return;
 133         }
 134         if (resp == null) {
 135             return;
 136         }
 137         String requestUri = req.getRequestURI();
 138         if (requestUri == null) {
 139             return;
 140         }
 141         String baseUrl = requestUri.substring(servletUrl.length());
 142         String uri = baseUrl;
 143         String queryString = req.getQueryString();
 144         if (queryString != null && queryString.length() > 0) {
 145             uri += "?" + queryString;
 146         }
 147
 148         Connection connection = this.account.findConnection();
 149         if (connection != null && uri.equals("/changedomain")) {
 150             Map<String, String[]> map = req.getParameterMap();
 151             String[] domainArray = map.get("domain");
 152             if (domainArray == null) {
 153                 logger.warn("Could not determine domain");
 154                 return;
 155             }
 156             String domain = domainArray[0];
 157             String loginData = connection.serializeLoginData();
 158             Connection newConnection = new Connection(null, this.gson);
 159             if (newConnection.tryRestoreLogin(loginData, domain)) {
 160                 account.setConnection(newConnection);
 161             }
 162             resp.sendRedirect(servletUrl);
 163             return;
 164         }
 165         if (uri.startsWith(PROXY_URI_PART)) {
 166             // handle proxy request
 167
 168             if (connection == null) {
 169                 returnError(resp, "Account not online");
 170                 return;
 171             }
 172             String getUrl = "https://alexa." + connection.getAmazonSite() + "/"
 173                     + uri.substring(PROXY_URI_PART.length());
 174
 175             String postData = null;
 176             if (verb == "POST" || verb == "PUT") {
 177                 postData = req.getReader().lines().collect(Collectors.joining(System.lineSeparator()));
 178             }
 179
 180             this.handleProxyRequest(connection, resp, verb, getUrl, null, postData, true, connection.getAmazonSite());
 181             return;
 182         }
 183
 184         // handle post of login page
 185         connection = this.connectionToInitialize;
 186         if (connection == null) {
 187             returnError(resp, "Connection not in initialize mode.");
 188             return;
 189         }
 190
 191         resp.addHeader("content-type", "text/html;charset=UTF-8");
 192
 193         Map<String, String[]> map = req.getParameterMap();
 194         StringBuilder postDataBuilder = new StringBuilder();
 195         for (String name : map.keySet()) {
 196             if (postDataBuilder.length() > 0) {
 197                 postDataBuilder.append('&');
 198             }
 199
 200             postDataBuilder.append(name);
 201             postDataBuilder.append('=');
 202             String value = "";
 203             if (name.equals("failedSignInCount")) {
 204                 value = "ape:AA==";
 205             } else {
 206                 String[] strings = map.get(name);
 207                 if (strings != null && strings.length > 0 && strings[0] != null) {
 208                     value = strings[0];
 209                 }
 210             }
 211             postDataBuilder.append(URLEncoder.encode(value, StandardCharsets.UTF_8.name()));
 212         }
 213
 214         uri = req.getRequestURI();
 215         if (uri == null || !uri.startsWith(servletUrl)) {
 216             returnError(resp, "Invalid request uri '" + uri + "'");
 217             return;
 218         }
 219         String relativeUrl = uri.substring(servletUrl.length()).replace(FORWARD_URI_PART, "/");
 220
 221         String site = connection.getAmazonSite();
 222         if (relativeUrl.startsWith("/ap/signin")) {
 223             site = "amazon.com";
 224         }
 225         String postUrl = "https://www." + site + relativeUrl;
 226         queryString = req.getQueryString();
 227         if (queryString != null && queryString.length() > 0) {
 228             postUrl += "?" + queryString;
 229         }
 230         String referer = "https://www." + site;
 231         String postData = postDataBuilder.toString();
 232         handleProxyRequest(connection, resp, "POST", postUrl, referer, postData, false, site);
 233     }
 234
 235     @Override
 236     protected void doGet(@Nullable HttpServletRequest req, @Nullable HttpServletResponse resp) throws IOException {
 237         if (req == null) {
 238             return;
 239         }
 240         if (resp == null) {
 241             return;
 242         }
 243         String requestUri = req.getRequestURI();
 244         if (requestUri == null) {
 245             return;
 246         }
 247         String baseUrl = requestUri.substring(servletUrl.length());
 248         String uri = baseUrl;
 249         String queryString = req.getQueryString();
 250         if (queryString != null && queryString.length() > 0) {
 251             uri += "?" + queryString;
 252         }
 253         logger.debug("doGet {}", uri);
 254         try {
 255             Connection connection = this.connectionToInitialize;
 256             if (uri.startsWith(FORWARD_URI_PART) && connection != null) {
 257                 String getUrl = "https://www." + connection.getAmazonSite() + "/"
 258                         + uri.substring(FORWARD_URI_PART.length());
 259
 260                 this.handleProxyRequest(connection, resp, "GET", getUrl, null, null, false, connection.getAmazonSite());
 261                 return;
 262             }
 263
 264             connection = this.account.findConnection();
 265             if (uri.startsWith(PROXY_URI_PART)) {
 266                 // handle proxy request
 267
 268                 if (connection == null) {
 269                     returnError(resp, "Account not online");
 270                     return;
 271                 }
 272                 String getUrl = "https://alexa." + connection.getAmazonSite() + "/"
 273                         + uri.substring(PROXY_URI_PART.length());
 274
 275                 this.handleProxyRequest(connection, resp, "GET", getUrl, null, null, false, connection.getAmazonSite());
 276                 return;
 277             }
 278
 279             if (connection != null && connection.verifyLogin()) {
 280                 // handle commands
 281                 if (baseUrl.equals("/logout") || baseUrl.equals("/logout/")) {
 282                     this.connectionToInitialize = reCreateConnection();
 283                     this.account.setConnection(null);
 284                     resp.sendRedirect(this.servletUrl);
 285                     return;
 286                 }
 287                 // handle commands
 288                 if (baseUrl.equals("/newdevice") || baseUrl.equals("/newdevice/")) {
 289                     this.connectionToInitialize = new Connection(null, this.gson);
 290                     this.account.setConnection(null);
 291                     resp.sendRedirect(this.servletUrl);
 292                     return;
 293                 }
 294
 295                 if (baseUrl.equals("/devices") || baseUrl.equals("/devices/")) {
 296                     handleDevices(resp, connection);
 297                     return;
 298                 }
 299                 if (baseUrl.equals("/changeDomain") || baseUrl.equals("/changeDomain/")) {
 300                     handleChangeDomain(resp, connection);
 301                     return;
 302                 }
 303                 if (baseUrl.equals("/ids") || baseUrl.equals("/ids/")) {
 304                     String serialNumber = getQueryMap(queryString).get("serialNumber");
 305                     Device device = account.findDeviceJson(serialNumber);
 306                     if (device != null) {
 307                         Thing thing = account.findThingBySerialNumber(device.serialNumber);
 308                         handleIds(resp, connection, device, thing);
 309                         return;
 310                     }
 311                 }
 312                 // return hint that everything is ok
 313                 handleDefaultPageResult(resp, "The Account is logged in.", connection);
 314                 return;
 315             }
 316             connection = this.connectionToInitialize;
 317             if (connection == null) {
 318                 connection = this.reCreateConnection();
 319                 this.connectionToInitialize = connection;
 320             }
 321
 322             if (!uri.equals("/")) {
 323                 String newUri = req.getServletPath() + "/";
 324                 resp.sendRedirect(newUri);
 325                 return;
 326             }
 327
 328             String html = connection.getLoginPage();
 329             returnHtml(connection, resp, html, "amazon.com");
 330         } catch (URISyntaxException | InterruptedException e) {
 331             logger.warn("get failed with uri syntax error", e);
 332         }
 333     }
 334
 335     public Map<String, String> getQueryMap(@Nullable String query) {
 336         Map<String, String> map = new HashMap<>();
 337         if (query != null) {
 338             String[] params = query.split("&");
 339             for (String param : params) {
 340                 String[] elements = param.split("=");
 341                 if (elements.length == 2) {
 342                     String name = elements[0];
 343                     String value = "";
 344                     try {
 345                         value = URLDecoder.decode(elements[1], "UTF8");
 346                     } catch (UnsupportedEncodingException e) {
 347                         logger.info("Unsupported encoding", e);
 348                     }
 349                     map.put(name, value);
 350                 }
 351             }
 352         }
 353         return map;
 354     }
 355
 356     private void handleChangeDomain(HttpServletResponse resp, Connection connection) {
 357         StringBuilder html = createPageStart("Change Domain");
 358         html.append("<form action='");
 359         html.append(servletUrl);
 360         html.append("/changedomain' method='post'>\nDomain:\n<input type='text' name='domain' value='");
 361         html.append(connection.getAmazonSite());
 362         html.append("'>\n<br>\n<input type=\"submit\" value=\"Submit\">\n</form>");
 363
 364         createPageEndAndSent(resp, html);
 365     }
 366
 367     private void handleDefaultPageResult(HttpServletResponse resp, String message, Connection connection)
 368             throws IOException {
 369         StringBuilder html = createPageStart("");
 370         html.append(StringEscapeUtils.escapeHtml(message));
 371         // logout link
 372         html.append(" <a href='" + servletUrl + "/logout' >");
 373         html.append(StringEscapeUtils.escapeHtml("Logout"));
 374         html.append("</a>");
 375         // newdevice link
 376         html.append(" | <a href='" + servletUrl + "/newdevice' >");
 377         html.append(StringEscapeUtils.escapeHtml("Logout and create new device id"));
 378         html.append("</a>");
 379         // customer id
 380         html.append("<br>Customer Id: ");
 381         html.append(StringEscapeUtils.escapeHtml(connection.getCustomerId()));
 382         // customer name
 383         html.append("<br>Customer Name: ");
 384         html.append(StringEscapeUtils.escapeHtml(connection.getCustomerName()));
 385         // device name
 386         html.append("<br>App name: ");
 387         html.append(StringEscapeUtils.escapeHtml(connection.getDeviceName()));
 388         // connection
 389         html.append("<br>Connected to: ");
 390         html.append(StringEscapeUtils.escapeHtml(connection.getAlexaServer()));
 391         // domain
 392         html.append(" <a href='");
 393         html.append(servletUrl);
 394         html.append("/changeDomain'>Change</a>");
 395
 396         // paper ui link
 397         html.append("<br><a href='/paperui/index.html#/configuration/things/view/" + BINDING_ID + ":"
 398                 + URLEncoder.encode(THING_TYPE_ACCOUNT.getId(), "UTF8") + ":" + URLEncoder.encode(id, "UTF8") + "'>");
 399         html.append(StringEscapeUtils.escapeHtml("Check Thing in Paper UI"));
 400         html.append("</a><br><br>");
 401
 402         // device list
 403         html.append(
 404                 "<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>");
 405         for (Device device : this.account.getLastKnownDevices()) {
 406
 407             html.append("<tr><td>");
 408             html.append(StringEscapeUtils.escapeHtml(nullReplacement(device.accountName)));
 409             html.append("</td><td>");
 410             html.append(StringEscapeUtils.escapeHtml(nullReplacement(device.serialNumber)));
 411             html.append("</td><td>");
 412             html.append(StringEscapeUtils.escapeHtml(device.online ? "Online" : "Offline"));
 413             html.append("</td><td>");
 414             Thing accountHandler = account.findThingBySerialNumber(device.serialNumber);
 415             if (accountHandler != null) {
 416                 html.append("<a href='" + servletUrl + "/ids/?serialNumber="
 417                         + URLEncoder.encode(device.serialNumber, "UTF8") + "'>"
 418                         + StringEscapeUtils.escapeHtml(accountHandler.getLabel()) + "</a>");
 419             } else {
 420                 html.append("<a href='" + servletUrl + "/ids/?serialNumber="
 421                         + URLEncoder.encode(device.serialNumber, "UTF8") + "'>"
 422                         + StringEscapeUtils.escapeHtml("Not defined") + "</a>");
 423             }
 424             html.append("</td><td>");
 425             html.append(StringEscapeUtils.escapeHtml(nullReplacement(device.deviceFamily)));
 426             html.append("</td><td>");
 427             html.append(StringEscapeUtils.escapeHtml(nullReplacement(device.deviceType)));
 428             html.append("</td><td>");
 429             html.append(StringEscapeUtils.escapeHtml(nullReplacement(device.deviceOwnerCustomerId)));
 430             html.append("</td>");
 431             html.append("</tr>");
 432         }
 433         html.append("</table>");
 434         createPageEndAndSent(resp, html);
 435     }
 436
 437     private void handleDevices(HttpServletResponse resp, Connection connection)
 438             throws IOException, URISyntaxException, InterruptedException {
 439         returnHtml(connection, resp,
 440                 "<html>" + StringEscapeUtils.escapeHtml(connection.getDeviceListJson()) + "</html>");
 441     }
 442
 443     private String nullReplacement(@Nullable String text) {
 444         if (text == null) {
 445             return "<unknown>";
 446         }
 447         return text;
 448     }
 449
 450     StringBuilder createPageStart(String title) {
 451         StringBuilder html = new StringBuilder();
 452         html.append("<html><head><title>"
 453                 + StringEscapeUtils.escapeHtml(BINDING_NAME + " - " + this.account.getThing().getLabel()));
 454         if (!title.isEmpty()) {
 455             html.append(" - ");
 456             html.append(StringEscapeUtils.escapeHtml(title));
 457         }
 458         html.append("</title><head><body>");
 459         html.append("<h1>" + StringEscapeUtils.escapeHtml(BINDING_NAME + " - " + this.account.getThing().getLabel()));
 460         if (!title.isEmpty()) {
 461             html.append(" - ");
 462             html.append(StringEscapeUtils.escapeHtml(title));
 463         }
 464         html.append("</h1>");
 465         return html;
 466     }
 467
 468     private void createPageEndAndSent(HttpServletResponse resp, StringBuilder html) {
 469         // account overview link
 470         html.append("<br><a href='" + servletUrl + "/../' >");
 471         html.append(StringEscapeUtils.escapeHtml("Account overview"));
 472         html.append("</a><br>");
 473
 474         html.append("</body></html>");
 475         resp.addHeader("content-type", "text/html;charset=UTF-8");
 476         try {
 477             resp.getWriter().write(html.toString());
 478         } catch (IOException e) {
 479             logger.warn("return html failed with IO error", e);
 480         }
 481     }
 482
 483     private void handleIds(HttpServletResponse resp, Connection connection, Device device, @Nullable Thing thing)
 484             throws IOException, URISyntaxException {
 485         StringBuilder html;
 486         if (thing != null) {
 487             html = createPageStart("Channel Options - " + thing.getLabel());
 488         } else {
 489             html = createPageStart("Device Information - No thing defined");
 490         }
 491         renderBluetoothMacChannel(connection, device, html);
 492         renderAmazonMusicPlaylistIdChannel(connection, device, html);
 493         renderPlayAlarmSoundChannel(connection, device, html);
 494         renderMusicProviderIdChannel(connection, html);
 495         renderCapabilities(connection, device, html);
 496         createPageEndAndSent(resp, html);
 497     }
 498
 499     private void renderCapabilities(Connection connection, Device device, StringBuilder html) {
 500         html.append("<h2>Capabilities</h2>");
 501         html.append("<table><tr><th align='left'>Name</th></tr>");
 502         String[] capabilities = device.capabilities;
 503         if (capabilities != null) {
 504             for (String capability : capabilities) {
 505                 html.append("<tr><td>");
 506                 html.append(StringEscapeUtils.escapeHtml(capability));
 507                 html.append("</td></tr>");
 508             }
 509         }
 510         html.append("</table>");
 511     }
 512
 513     private void renderMusicProviderIdChannel(Connection connection, StringBuilder html) {
 514         html.append("<h2>" + StringEscapeUtils.escapeHtml("Channel " + CHANNEL_MUSIC_PROVIDER_ID) + "</h2>");
 515         html.append("<table><tr><th align='left'>Name</th><th align='left'>Value</th></tr>");
 516         List<JsonMusicProvider> musicProviders = connection.getMusicProviders();
 517         for (JsonMusicProvider musicProvider : musicProviders) {
 518             List<String> properties = musicProvider.supportedProperties;
 519             String providerId = musicProvider.id;
 520             String displayName = musicProvider.displayName;
 521             if (properties != null && properties.contains("Alexa.Music.PlaySearchPhrase") && providerId != null
 522                     && !providerId.isEmpty() && "AVAILABLE".equals(musicProvider.availability) && displayName != null
 523                     && !displayName.isEmpty()) {
 524                 html.append("<tr><td>");
 525                 html.append(StringEscapeUtils.escapeHtml(displayName));
 526                 html.append("</td><td>");
 527                 html.append(StringEscapeUtils.escapeHtml(providerId));
 528                 html.append("</td></tr>");
 529             }
 530         }
 531         html.append("</table>");
 532     }
 533
 534     private void renderPlayAlarmSoundChannel(Connection connection, Device device, StringBuilder html) {
 535         html.append("<h2>" + StringEscapeUtils.escapeHtml("Channel " + CHANNEL_PLAY_ALARM_SOUND) + "</h2>");
 536         JsonNotificationSound[] notificationSounds = null;
 537         String errorMessage = "No notifications sounds found";
 538         try {
 539             notificationSounds = connection.getNotificationSounds(device);
 540         } catch (IOException | HttpException | URISyntaxException | JsonSyntaxException | ConnectionException
 541                 | InterruptedException e) {
 542             errorMessage = e.getLocalizedMessage();
 543         }
 544         if (notificationSounds != null) {
 545             html.append("<table><tr><th align='left'>Name</th><th align='left'>Value</th></tr>");
 546             for (JsonNotificationSound notificationSound : notificationSounds) {
 547                 if (notificationSound.folder == null && notificationSound.providerId != null
 548                         && notificationSound.id != null && notificationSound.displayName != null) {
 549                     String providerSoundId = notificationSound.providerId + ":" + notificationSound.id;
 550
 551                     html.append("<tr><td>");
 552                     html.append(StringEscapeUtils.escapeHtml(notificationSound.displayName));
 553                     html.append("</td><td>");
 554                     html.append(StringEscapeUtils.escapeHtml(providerSoundId));
 555                     html.append("</td></tr>");
 556                 }
 557             }
 558             html.append("</table>");
 559         } else {
 560             html.append(StringEscapeUtils.escapeHtml(errorMessage));
 561         }
 562     }
 563
 564     private void renderAmazonMusicPlaylistIdChannel(Connection connection, Device device, StringBuilder html) {
 565         html.append("<h2>" + StringEscapeUtils.escapeHtml("Channel " + CHANNEL_AMAZON_MUSIC_PLAY_LIST_ID) + "</h2>");
 566
 567         JsonPlaylists playLists = null;
 568         String errorMessage = "No playlists found";
 569         try {
 570             playLists = connection.getPlaylists(device);
 571         } catch (IOException | HttpException | URISyntaxException | JsonSyntaxException | ConnectionException
 572                 | InterruptedException e) {
 573             errorMessage = e.getLocalizedMessage();
 574         }
 575
 576         if (playLists != null) {
 577             Map<String, PlayList @Nullable []> playlistMap = playLists.playlists;
 578             if (playlistMap != null && !playlistMap.isEmpty()) {
 579                 html.append("<table><tr><th align='left'>Name</th><th align='left'>Value</th></tr>");
 580
 581                 for (PlayList[] innerLists : playlistMap.values()) {
 582                     {
 583                         if (innerLists != null && innerLists.length > 0) {
 584                             PlayList playList = innerLists[0];
 585                             if (playList != null && playList.playlistId != null && playList.title != null) {
 586                                 html.append("<tr><td>");
 587                                 html.append(StringEscapeUtils.escapeHtml(nullReplacement(playList.title)));
 588                                 html.append("</td><td>");
 589                                 html.append(StringEscapeUtils.escapeHtml(nullReplacement(playList.playlistId)));
 590                                 html.append("</td></tr>");
 591                             }
 592                         }
 593                     }
 594                 }
 595                 html.append("</table>");
 596             } else {
 597                 html.append(StringEscapeUtils.escapeHtml(errorMessage));
 598             }
 599         }
 600     }
 601
 602     private void renderBluetoothMacChannel(Connection connection, Device device, StringBuilder html) {
 603         html.append("<h2>" + StringEscapeUtils.escapeHtml("Channel " + CHANNEL_BLUETOOTH_MAC) + "</h2>");
 604         JsonBluetoothStates bluetoothStates = connection.getBluetoothConnectionStates();
 605         if (bluetoothStates == null) {
 606             return;
 607         }
 608         BluetoothState[] innerStates = bluetoothStates.bluetoothStates;
 609         if (innerStates == null) {
 610             return;
 611         }
 612         for (BluetoothState state : innerStates) {
 613             if (state == null) {
 614                 continue;
 615             }
 616             String stateDeviceSerialNumber = state.deviceSerialNumber;
 617             if ((stateDeviceSerialNumber == null && device.serialNumber == null)
 618                     || (stateDeviceSerialNumber != null && stateDeviceSerialNumber.equals(device.serialNumber))) {
 619                 PairedDevice[] pairedDeviceList = state.pairedDeviceList;
 620                 if (pairedDeviceList != null && pairedDeviceList.length > 0) {
 621                     html.append("<table><tr><th align='left'>Name</th><th align='left'>Value</th></tr>");
 622                     for (PairedDevice pairedDevice : pairedDeviceList) {
 623                         html.append("<tr><td>");
 624                         html.append(StringEscapeUtils.escapeHtml(nullReplacement(pairedDevice.friendlyName)));
 625                         html.append("</td><td>");
 626                         html.append(StringEscapeUtils.escapeHtml(nullReplacement(pairedDevice.address)));
 627                         html.append("</td></tr>");
 628                     }
 629                     html.append("</table>");
 630                 } else {
 631                     html.append(StringEscapeUtils.escapeHtml("No bluetooth devices paired"));
 632                 }
 633             }
 634         }
 635     }
 636
 637     void handleProxyRequest(Connection connection, HttpServletResponse resp, String verb, String url,
 638             @Nullable String referer, @Nullable String postData, boolean json, String site) throws IOException {
 639         HttpsURLConnection urlConnection;
 640         try {
 641             Map<String, String> headers = null;
 642             if (referer != null) {
 643                 headers = new HashMap<>();
 644                 headers.put("Referer", referer);
 645             }
 646
 647             urlConnection = connection.makeRequest(verb, url, postData, json, false, headers, 0);
 648             if (urlConnection.getResponseCode() == 302) {
 649                 {
 650                     String location = urlConnection.getHeaderField("location");
 651                     if (location.contains("/ap/maplanding")) {
 652                         try {
 653                             connection.registerConnectionAsApp(location);
 654                             account.setConnection(connection);
 655                             handleDefaultPageResult(resp, "Login succeeded", connection);
 656                             this.connectionToInitialize = null;
 657                             return;
 658                         } catch (URISyntaxException | ConnectionException e) {
 659                             returnError(resp,
 660                                     "Login to '" + connection.getAmazonSite() + "' failed: " + e.getLocalizedMessage());
 661                             this.connectionToInitialize = null;
 662                             return;
 663                         }
 664                     }
 665
 666                     String startString = "https://www." + connection.getAmazonSite() + "/";
 667                     String newLocation = null;
 668                     if (location.startsWith(startString) && connection.getIsLoggedIn()) {
 669                         newLocation = servletUrl + PROXY_URI_PART + location.substring(startString.length());
 670                     } else if (location.startsWith(startString)) {
 671                         newLocation = servletUrl + FORWARD_URI_PART + location.substring(startString.length());
 672                     } else {
 673                         startString = "/";
 674                         if (location.startsWith(startString)) {
 675                             newLocation = servletUrl + FORWARD_URI_PART + location.substring(startString.length());
 676                         }
 677                     }
 678                     if (newLocation != null) {
 679                         logger.debug("Redirect mapped from {} to {}", location, newLocation);
 680
 681                         resp.sendRedirect(newLocation);
 682                         return;
 683                     }
 684                     returnError(resp, "Invalid redirect to '" + location + "'");
 685                     return;
 686                 }
 687             }
 688         } catch (URISyntaxException | ConnectionException | InterruptedException e) {
 689             returnError(resp, e.getLocalizedMessage());
 690             return;
 691         }
 692         String response = connection.convertStream(urlConnection);
 693         returnHtml(connection, resp, response, site);
 694     }
 695
 696     private void returnHtml(Connection connection, HttpServletResponse resp, String html) {
 697         returnHtml(connection, resp, html, connection.getAmazonSite());
 698     }
 699
 700     private void returnHtml(Connection connection, HttpServletResponse resp, String html, String amazonSite) {
 701         String resultHtml = html.replace("action=\"/", "action=\"" + servletUrl + "/")
 702                 .replace("action=\"&#x2F;", "action=\"" + servletUrl + "/")
 703                 .replace("https://www." + amazonSite + "/", servletUrl + "/")
 704                 .replace("https://www." + amazonSite + ":443" + "/", servletUrl + "/")
 705                 .replace("https:&#x2F;&#x2F;www." + amazonSite + "&#x2F;", servletUrl + "/")
 706                 .replace("https:&#x2F;&#x2F;www." + amazonSite + ":443" + "&#x2F;", servletUrl + "/")
 707                 .replace("http://www." + amazonSite + "/", servletUrl + "/")
 708                 .replace("http:&#x2F;&#x2F;www." + amazonSite + "&#x2F;", servletUrl + "/");
 709
 710         resp.addHeader("content-type", "text/html;charset=UTF-8");
 711         try {
 712             resp.getWriter().write(resultHtml);
 713         } catch (IOException e) {
 714             logger.warn("return html failed with IO error", e);
 715         }
 716     }
 717
 718     void returnError(HttpServletResponse resp, @Nullable String errorMessage) {
 719         try {
 720             String message = errorMessage != null ? errorMessage : "null";
 721             resp.getWriter().write("<html>" + StringEscapeUtils.escapeHtml(message) + "<br><a href='" + servletUrl
 722                     + "'>Try again</a></html>");
 723         } catch (IOException e) {
 724             logger.info("Returning error message failed", e);
 725         }
 726     }
 727 }