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   1 /**
   2  * Copyright (c) 2010-2023 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.digitalstrom.internal.lib.serverconnection.impl;
  14
  15 import java.io.ByteArrayInputStream;
  16 import java.io.File;
  17 import java.io.FileInputStream;
  18 import java.io.FileNotFoundException;
  19 import java.io.FileWriter;
  20 import java.io.IOException;
  21 import java.io.InputStream;
  22 import java.net.HttpURLConnection;
  23 import java.net.MalformedURLException;
  24 import java.net.SocketTimeoutException;
  25 import java.net.URL;
  26 import java.nio.charset.StandardCharsets;
  27 import java.security.KeyManagementException;
  28 import java.security.NoSuchAlgorithmException;
  29 import java.security.SecureRandom;
  30 import java.security.Security;
  31 import java.security.cert.CertificateEncodingException;
  32 import java.security.cert.CertificateException;
  33 import java.security.cert.CertificateFactory;
  34 import java.security.cert.X509Certificate;
  35 import java.util.Base64;
  36
  37 import javax.net.ssl.HostnameVerifier;
  38 import javax.net.ssl.HttpsURLConnection;
  39 import javax.net.ssl.SSLContext;
  40 import javax.net.ssl.SSLHandshakeException;
  41 import javax.net.ssl.SSLSession;
  42 import javax.net.ssl.SSLSocketFactory;
  43 import javax.net.ssl.TrustManager;
  44 import javax.net.ssl.X509TrustManager;
  45
  46 import org.openhab.binding.digitalstrom.internal.lib.config.Config;
  47 import org.openhab.binding.digitalstrom.internal.lib.manager.ConnectionManager;
  48 import org.openhab.binding.digitalstrom.internal.lib.serverconnection.HttpTransport;
  49 import org.openhab.binding.digitalstrom.internal.lib.serverconnection.simpledsrequestbuilder.constants.ParameterKeys;
  50 import org.slf4j.Logger;
  51 import org.slf4j.LoggerFactory;
  52
  53 /**
  54  * The {@link HttpTransportImpl} executes a request to the digitalSTROM-Server.
  55  * <p>
  56  * If a {@link Config} is given at the constructor. It sets the SSL-Certificate what is set in
  57  * {@link Config#getCert()}. If there is no SSL-Certificate, but a path to an external SSL-Certificate file what is set
  58  * in {@link Config#getTrustCertPath()} this will be set. If no SSL-Certificate is set in the {@link Config} it will be
  59  * red out from the server and set in {@link Config#setCert(String)}.
  60  *
  61  * <p>
  62  * If no {@link Config} is given the SSL-Certificate will be stored locally.
  63  *
  64  * <p>
  65  * The method {@link #writePEMCertFile(String)} saves the SSL-Certificate in a file at the given path. If all
  66  * SSL-Certificates shout be ignored the flag <i>exeptAllCerts</i> have to be true at the constructor
  67  * </p>
  68  * <p>
  69  * If a {@link ConnectionManager} is given at the constructor, the session-token is not needed by requests and the
  70  * {@link ConnectionListener}, which is registered at the {@link ConnectionManager}, will be automatically informed
  71  * about
  72  * connection state changes through the {@link #execute(String, int, int)} method.
  73  * </p>
  74  *
  75  * @author Michael Ochel - Initial contribution
  76  * @author Matthias Siegele - Initial contribution
  77  */
  78 public class HttpTransportImpl implements HttpTransport {
  79
  80     private static final String LINE_SEPERATOR = System.getProperty("line.separator");
  81     private static final String BEGIN_CERT = "-----BEGIN CERTIFICATE-----" + LINE_SEPERATOR;
  82     private static final String END_CERT = LINE_SEPERATOR + "-----END CERTIFICATE-----" + LINE_SEPERATOR;
  83
  84     private final Logger logger = LoggerFactory.getLogger(HttpTransportImpl.class);
  85     private static final short MAY_A_NEW_SESSION_TOKEN_IS_NEEDED = 1;
  86
  87     private String uri;
  88
  89     private int connectTimeout;
  90     private int readTimeout;
  91
  92     private Config config;
  93
  94     private ConnectionManager connectionManager;
  95
  96     private String cert;
  97     private SSLSocketFactory sslSocketFactory;
  98     private final HostnameVerifier hostnameVerifier = new HostnameVerifier() {
  99
 100         @Override
 101         public boolean verify(String arg0, SSLSession arg1) {
 102             return arg0.equals(arg1.getPeerHost()) || arg0.contains("dss.local.");
 103         }
 104     };
 105
 106     /**
 107      * Creates a new {@link HttpTransportImpl} with registration of the given {@link ConnectionManager} and set ignore
 108      * all SSL-Certificates. The {@link Config} will be automatically added from the configurations of the given
 109      * {@link ConnectionManager}.
 110      *
 111      * @param connectionManager to check connection, can be null
 112      * @param exeptAllCerts (true = all will ignore)
 113      */
 114     public HttpTransportImpl(ConnectionManager connectionManager, boolean exeptAllCerts) {
 115         this.connectionManager = connectionManager;
 116         this.config = connectionManager.getConfig();
 117         init(config.getHost(), config.getConnectionTimeout(), config.getReadTimeout(), exeptAllCerts);
 118     }
 119
 120     /**
 121      * Creates a new {@link HttpTransportImpl} with configurations of the given {@link Config} and set ignore all
 122      * SSL-Certificates.
 123      *
 124      * @param config to get configurations, must not be null
 125      * @param exeptAllCerts (true = all will ignore)
 126      */
 127     public HttpTransportImpl(Config config, boolean exeptAllCerts) {
 128         this.config = config;
 129         init(config.getHost(), config.getConnectionTimeout(), config.getReadTimeout(), exeptAllCerts);
 130     }
 131
 132     /**
 133      * Creates a new {@link HttpTransportImpl} with configurations of the given {@link Config}.
 134      *
 135      * @param config to get configurations, must not be null
 136      */
 137     public HttpTransportImpl(Config config) {
 138         this.config = config;
 139         init(config.getHost(), config.getConnectionTimeout(), config.getReadTimeout(), false);
 140     }
 141
 142     /**
 143      * Creates a new {@link HttpTransportImpl}.
 144      *
 145      * @param uri of the server, must not be null
 146      */
 147     public HttpTransportImpl(String uri) {
 148         init(uri, Config.DEFAULT_CONNECTION_TIMEOUT, Config.DEFAULT_READ_TIMEOUT, false);
 149     }
 150
 151     /**
 152      * Creates a new {@link HttpTransportImpl} and set ignore all SSL-Certificates.
 153      *
 154      * @param uri of the server, must not be null
 155      * @param exeptAllCerts (true = all will ignore)
 156      */
 157     public HttpTransportImpl(String uri, boolean exeptAllCerts) {
 158         init(uri, Config.DEFAULT_CONNECTION_TIMEOUT, Config.DEFAULT_READ_TIMEOUT, exeptAllCerts);
 159     }
 160
 161     /**
 162      * Creates a new {@link HttpTransportImpl}.
 163      *
 164      * @param uri of the server, must not be null
 165      * @param connectTimeout to set
 166      * @param readTimeout to set
 167      */
 168     public HttpTransportImpl(String uri, int connectTimeout, int readTimeout) {
 169         init(uri, connectTimeout, readTimeout, false);
 170     }
 171
 172     /**
 173      * Creates a new {@link HttpTransportImpl} and set ignore all SSL-Certificates..
 174      *
 175      * @param uri of the server, must not be null
 176      * @param connectTimeout to set
 177      * @param readTimeout to set
 178      * @param exeptAllCerts (true = all will ignore)
 179      */
 180     public HttpTransportImpl(String uri, int connectTimeout, int readTimeout, boolean exeptAllCerts) {
 181         init(uri, connectTimeout, readTimeout, exeptAllCerts);
 182     }
 183
 184     private void init(String uri, int connectTimeout, int readTimeout, boolean exeptAllCerts) {
 185         logger.debug("init HttpTransportImpl");
 186         this.uri = fixURI(uri);
 187         this.connectTimeout = connectTimeout;
 188         this.readTimeout = readTimeout;
 189         // Check SSL Certificate
 190         if (exeptAllCerts) {
 191             sslSocketFactory = generateSSLContextWhichAcceptAllSSLCertificats();
 192         } else {
 193             if (config != null) {
 194                 cert = config.getCert();
 195                 logger.debug("generate SSLcontext from config cert");
 196                 if (cert != null && !cert.isBlank()) {
 197                     sslSocketFactory = generateSSLContextFromPEMCertString(cert);
 198                 } else {
 199                     String trustCertPath = config.getTrustCertPath();
 200                     if (trustCertPath != null && !trustCertPath.isBlank()) {
 201                         logger.debug("generate SSLcontext from config cert path");
 202                         cert = readPEMCertificateStringFromFile(trustCertPath);
 203                         if (cert != null && !cert.isBlank()) {
 204                             sslSocketFactory = generateSSLContextFromPEMCertString(cert);
 205                         }
 206                     } else {
 207                         logger.debug("generate SSLcontext from server");
 208                         cert = getPEMCertificateFromServer(this.uri);
 209                         sslSocketFactory = generateSSLContextFromPEMCertString(cert);
 210                         if (sslSocketFactory != null) {
 211                             config.setCert(cert);
 212                         }
 213                     }
 214                 }
 215             } else {
 216                 logger.debug("generate SSLcontext from server");
 217                 cert = getPEMCertificateFromServer(this.uri);
 218                 sslSocketFactory = generateSSLContextFromPEMCertString(cert);
 219             }
 220         }
 221     }
 222
 223     private String fixURI(String uri) {
 224         String fixedURI = uri;
 225         if (!fixedURI.startsWith("https://")) {
 226             fixedURI = "https://" + fixedURI;
 227         }
 228         if (fixedURI.split(":").length != 3) {
 229             fixedURI = fixedURI + ":8080";
 230         }
 231         return fixedURI;
 232     }
 233
 234     private String fixRequest(String request) {
 235         return request.replace(" ", "");
 236     }
 237
 238     @Override
 239     public String execute(String request) {
 240         return execute(request, this.connectTimeout, this.readTimeout);
 241     }
 242
 243     private short loginCounter = 0;
 244
 245     @Override
 246     public String execute(String request, int connectTimeout, int readTimeout) {
 247         // NOTE: We will only show exceptions in the debug level, because they will be handled in the checkConnection()
 248         // method and this changes the bridge state. If a command was send it fails than and a sensorJob will be
 249         // execute the next time, by TimeOutExceptions. By other exceptions the checkConnection() method handles it in
 250         // max 1 second.
 251         String response = null;
 252         HttpsURLConnection connection = null;
 253         try {
 254             String correctedRequest = checkSessionToken(request);
 255             connection = getConnection(correctedRequest, connectTimeout, readTimeout);
 256             if (connection != null) {
 257                 connection.connect();
 258                 final int responseCode = connection.getResponseCode();
 259                 if (responseCode != HttpURLConnection.HTTP_FORBIDDEN) {
 260                     if (responseCode == HttpURLConnection.HTTP_INTERNAL_ERROR) {
 261                         response = new String(connection.getErrorStream().readAllBytes(), StandardCharsets.UTF_8);
 262                     } else {
 263                         response = new String(connection.getInputStream().readAllBytes(), StandardCharsets.UTF_8);
 264                     }
 265                     if (response != null) {
 266                         if (!response.contains("Authentication failed")) {
 267                             if (loginCounter > 0) {
 268                                 connectionManager.checkConnection(responseCode);
 269                             }
 270                             loginCounter = 0;
 271                         } else {
 272                             connectionManager.checkConnection(ConnectionManager.AUTHENTIFICATION_PROBLEM);
 273                             loginCounter++;
 274                         }
 275                     }
 276
 277                 }
 278                 connection.disconnect();
 279                 if (response == null && connectionManager != null
 280                         && loginCounter <= MAY_A_NEW_SESSION_TOKEN_IS_NEEDED) {
 281                     if (responseCode == HttpURLConnection.HTTP_FORBIDDEN) {
 282                         execute(addSessionToken(correctedRequest, connectionManager.getNewSessionToken()),
 283                                 connectTimeout, readTimeout);
 284                         loginCounter++;
 285                     } else {
 286                         connectionManager.checkConnection(responseCode);
 287                         loginCounter++;
 288                         return null;
 289                     }
 290                 }
 291                 return response;
 292             }
 293         } catch (SocketTimeoutException e) {
 294             informConnectionManager(ConnectionManager.SOCKET_TIMEOUT_EXCEPTION);
 295         } catch (java.net.ConnectException e) {
 296             informConnectionManager(ConnectionManager.CONNECTION_EXCEPTION);
 297         } catch (MalformedURLException e) {
 298             informConnectionManager(ConnectionManager.MALFORMED_URL_EXCEPTION);
 299         } catch (java.net.UnknownHostException e) {
 300             informConnectionManager(ConnectionManager.UNKNOWN_HOST_EXCEPTION);
 301         } catch (SSLHandshakeException e) {
 302             informConnectionManager(ConnectionManager.SSL_HANDSHAKE_EXCEPTION);
 303         } catch (IOException e) {
 304             logger.error("An IOException occurred: ", e);
 305             informConnectionManager(ConnectionManager.GENERAL_EXCEPTION);
 306         } finally {
 307             if (connection != null) {
 308                 connection.disconnect();
 309             }
 310         }
 311         return null;
 312     }
 313
 314     private boolean informConnectionManager(int code) {
 315         if (connectionManager != null && loginCounter < MAY_A_NEW_SESSION_TOKEN_IS_NEEDED) {
 316             connectionManager.checkConnection(code);
 317             return true;
 318         }
 319         return false;
 320     }
 321
 322     private String checkSessionToken(String request) {
 323         if (checkNeededSessionToken(request)) {
 324             if (connectionManager != null) {
 325                 String sessionToken = connectionManager.getSessionToken();
 326                 if (sessionToken == null) {
 327                     return addSessionToken(request, connectionManager.getNewSessionToken());
 328                 }
 329                 return addSessionToken(request, sessionToken);
 330             }
 331         }
 332         return request;
 333     }
 334
 335     private boolean checkNeededSessionToken(String request) {
 336         String requestFirstPart = request.substring(0, request.indexOf("?"));
 337         String functionName = requestFirstPart.substring(requestFirstPart.lastIndexOf("/") + 1);
 338         return !DsAPIImpl.METHODS_MUST_NOT_BE_LOGGED_IN.contains(functionName);
 339     }
 340
 341     private String addSessionToken(String request, String sessionToken) {
 342         String correctedRequest = request;
 343         if (!correctedRequest.contains(ParameterKeys.TOKEN)) {
 344             if (correctedRequest.contains("?")) {
 345                 correctedRequest = correctedRequest + "&" + ParameterKeys.TOKEN + "=" + sessionToken;
 346             } else {
 347                 correctedRequest = correctedRequest + "?" + ParameterKeys.TOKEN + "=" + sessionToken;
 348             }
 349         } else {
 350             String strippedRequest = correctedRequest
 351                     .substring(correctedRequest.indexOf(ParameterKeys.TOKEN + "=") + ParameterKeys.TOKEN.length() + 1);
 352             strippedRequest = strippedRequest.substring(0, strippedRequest.lastIndexOf("&"));
 353             correctedRequest = correctedRequest.replaceFirst(strippedRequest, sessionToken);
 354         }
 355         return correctedRequest;
 356     }
 357
 358     private HttpsURLConnection getConnection(String request, int connectTimeout, int readTimeout) throws IOException {
 359         String correctedRequest = request;
 360         if (correctedRequest != null && !correctedRequest.isBlank()) {
 361             correctedRequest = fixRequest(correctedRequest);
 362             URL url = new URL(this.uri + correctedRequest);
 363             HttpsURLConnection connection = (HttpsURLConnection) url.openConnection();
 364             if (connection != null) {
 365                 connection.setConnectTimeout(connectTimeout);
 366                 connection.setReadTimeout(readTimeout);
 367                 if (sslSocketFactory != null) {
 368                     connection.setSSLSocketFactory(sslSocketFactory);
 369                 }
 370                 if (hostnameVerifier != null) {
 371                     connection.setHostnameVerifier(hostnameVerifier);
 372                 }
 373             }
 374             return connection;
 375         }
 376         return null;
 377     }
 378
 379     @Override
 380     public int checkConnection(String testRequest) {
 381         try {
 382             HttpsURLConnection connection = getConnection(testRequest, connectTimeout, readTimeout);
 383             if (connection != null) {
 384                 connection.connect();
 385                 if (connection.getResponseCode() == HttpURLConnection.HTTP_OK) {
 386                     if (new String(connection.getInputStream().readAllBytes(), StandardCharsets.UTF_8)
 387                             .contains("Authentication failed")) {
 388                         return ConnectionManager.AUTHENTIFICATION_PROBLEM;
 389                     }
 390                 }
 391                 connection.disconnect();
 392                 return connection.getResponseCode();
 393             } else {
 394                 return ConnectionManager.GENERAL_EXCEPTION;
 395             }
 396         } catch (SocketTimeoutException e) {
 397             return ConnectionManager.SOCKET_TIMEOUT_EXCEPTION;
 398         } catch (java.net.ConnectException e) {
 399             return ConnectionManager.CONNECTION_EXCEPTION;
 400         } catch (MalformedURLException e) {
 401             return ConnectionManager.MALFORMED_URL_EXCEPTION;
 402         } catch (java.net.UnknownHostException e) {
 403             return ConnectionManager.UNKNOWN_HOST_EXCEPTION;
 404         } catch (IOException e) {
 405             return ConnectionManager.GENERAL_EXCEPTION;
 406         }
 407     }
 408
 409     @Override
 410     public int getSensordataConnectionTimeout() {
 411         return config != null ? config.getSensordataConnectionTimeout() : Config.DEFAULT_SENSORDATA_CONNECTION_TIMEOUT;
 412     }
 413
 414     @Override
 415     public int getSensordataReadTimeout() {
 416         return config != null ? config.getSensordataReadTimeout() : Config.DEFAULT_SENSORDATA_READ_TIMEOUT;
 417     }
 418
 419     private String readPEMCertificateStringFromFile(String path) {
 420         if (path == null || path.isBlank()) {
 421             logger.error("Path is empty.");
 422         } else {
 423             File dssCert = new File(path);
 424             if (dssCert.exists()) {
 425                 if (path.endsWith(".crt")) {
 426                     try (InputStream certInputStream = new FileInputStream(dssCert)) {
 427                         String cert = new String(certInputStream.readAllBytes(), StandardCharsets.UTF_8);
 428                         if (cert.startsWith(BEGIN_CERT)) {
 429                             return cert;
 430                         } else {
 431                             logger.error("File is not a PEM certificate file. PEM-Certificates starts with: {}",
 432                                     BEGIN_CERT);
 433                         }
 434                     } catch (FileNotFoundException e) {
 435                         logger.error("Can't find a certificate file at the path: {}\nPlease check the path!", path);
 436                     } catch (IOException e) {
 437                         logger.error("An IOException occurred: ", e);
 438                     }
 439                 } else {
 440                     logger.error("File is not a certificate (.crt) file.");
 441                 }
 442             } else {
 443                 logger.error("File not found");
 444             }
 445         }
 446         return null;
 447     }
 448
 449     @Override
 450     public String writePEMCertFile(String path) {
 451         String correctedPath = path == null ? "" : path.trim();
 452         File certFilePath;
 453         if (!correctedPath.isBlank()) {
 454             certFilePath = new File(correctedPath);
 455             boolean pathExists = certFilePath.exists();
 456             if (!pathExists) {
 457                 pathExists = certFilePath.mkdirs();
 458             }
 459             if (pathExists && !correctedPath.endsWith("/")) {
 460                 correctedPath = correctedPath + "/";
 461             }
 462         }
 463         InputStream certInputStream = new ByteArrayInputStream(cert.getBytes(StandardCharsets.UTF_8));
 464         X509Certificate trustedCert;
 465         try {
 466             trustedCert = (X509Certificate) CertificateFactory.getInstance("X.509")
 467                     .generateCertificate(certInputStream);
 468
 469             certFilePath = new File(
 470                     correctedPath + trustedCert.getSubjectDN().getName().split(",")[0].substring(2) + ".crt");
 471             if (!certFilePath.exists()) {
 472                 certFilePath.createNewFile();
 473                 FileWriter writer = new FileWriter(certFilePath, true);
 474                 writer.write(cert);
 475                 writer.flush();
 476                 writer.close();
 477                 return certFilePath.getAbsolutePath();
 478             } else {
 479                 logger.error("File allready exists!");
 480             }
 481         } catch (IOException e) {
 482             logger.error("An IOException occurred: ", e);
 483         } catch (CertificateException e1) {
 484             logger.error("A CertificateException occurred: ", e1);
 485         }
 486         return null;
 487     }
 488
 489     private SSLSocketFactory generateSSLContextFromPEMCertString(String pemCert) {
 490         if (pemCert != null && !pemCert.isBlank() && pemCert.startsWith(BEGIN_CERT)) {
 491             try {
 492                 InputStream certInputStream = new ByteArrayInputStream(pemCert.getBytes(StandardCharsets.UTF_8));
 493                 final X509Certificate trustedCert = (X509Certificate) CertificateFactory.getInstance("X.509")
 494                         .generateCertificate(certInputStream);
 495
 496                 final TrustManager[] trustManager = new TrustManager[] { new X509TrustManager() {
 497
 498                     @Override
 499                     public java.security.cert.X509Certificate[] getAcceptedIssuers() {
 500                         return null;
 501                     }
 502
 503                     @Override
 504                     public void checkClientTrusted(java.security.cert.X509Certificate[] certs, String authType)
 505                             throws CertificateException {
 506                         if (!certs[0].equals(trustedCert)) {
 507                             throw new CertificateException();
 508                         }
 509                     }
 510
 511                     @Override
 512                     public void checkServerTrusted(java.security.cert.X509Certificate[] certs, String authType)
 513                             throws CertificateException {
 514                         if (!certs[0].equals(trustedCert)) {
 515                             throw new CertificateException();
 516                         }
 517                     }
 518                 } };
 519
 520                 SSLContext sslContext = SSLContext.getInstance("SSL");
 521                 sslContext.init(null, trustManager, new java.security.SecureRandom());
 522                 return sslContext.getSocketFactory();
 523             } catch (NoSuchAlgorithmException e) {
 524                 logger.error("A NoSuchAlgorithmException occurred: ", e);
 525             } catch (KeyManagementException e) {
 526                 logger.error("A KeyManagementException occurred: ", e);
 527             } catch (CertificateException e) {
 528                 logger.error("A CertificateException occurred: ", e);
 529             }
 530         } else {
 531             logger.error("Cert is empty");
 532         }
 533         return null;
 534     }
 535
 536     private String getPEMCertificateFromServer(String host) {
 537         HttpsURLConnection connection = null;
 538         try {
 539             URL url = new URL(host);
 540
 541             connection = (HttpsURLConnection) url.openConnection();
 542             connection.setHostnameVerifier(hostnameVerifier);
 543             connection.setSSLSocketFactory(generateSSLContextWhichAcceptAllSSLCertificats());
 544             connection.connect();
 545
 546             java.security.cert.Certificate[] cert = connection.getServerCertificates();
 547             connection.disconnect();
 548
 549             byte[] by = ((X509Certificate) cert[0]).getEncoded();
 550             if (by.length != 0) {
 551                 return BEGIN_CERT + Base64.getEncoder().encodeToString(by) + END_CERT;
 552             }
 553         } catch (MalformedURLException e) {
 554             if (!informConnectionManager(ConnectionManager.MALFORMED_URL_EXCEPTION)) {
 555                 logger.error("A MalformedURLException occurred: ", e);
 556             }
 557         } catch (IOException e) {
 558             short code = ConnectionManager.GENERAL_EXCEPTION;
 559             if (e instanceof java.net.ConnectException) {
 560                 code = ConnectionManager.CONNECTION_EXCEPTION;
 561             } else if (e instanceof java.net.UnknownHostException) {
 562                 code = ConnectionManager.UNKNOWN_HOST_EXCEPTION;
 563             }
 564             if (!informConnectionManager(code) || code == -1) {
 565                 logger.error("An IOException occurred: ", e);
 566             }
 567         } catch (CertificateEncodingException e) {
 568             logger.error("A CertificateEncodingException occurred: ", e);
 569         } finally {
 570             if (connection != null) {
 571                 connection.disconnect();
 572             }
 573         }
 574         return null;
 575     }
 576
 577     private SSLSocketFactory generateSSLContextWhichAcceptAllSSLCertificats() {
 578         Security.addProvider(Security.getProvider("SunJCE"));
 579         TrustManager[] trustAllCerts = new TrustManager[] { new X509TrustManager() {
 580
 581             @Override
 582             public java.security.cert.X509Certificate[] getAcceptedIssuers() {
 583                 return null;
 584             }
 585
 586             @Override
 587             public void checkClientTrusted(X509Certificate[] arg0, String arg1) throws CertificateException {
 588             }
 589
 590             @Override
 591             public void checkServerTrusted(X509Certificate[] arg0, String arg1) throws CertificateException {
 592             }
 593         } };
 594
 595         try {
 596             SSLContext sslContext = SSLContext.getInstance("SSL");
 597
 598             sslContext.init(null, trustAllCerts, new SecureRandom());
 599
 600             return sslContext.getSocketFactory();
 601         } catch (KeyManagementException e) {
 602             logger.error("A KeyManagementException occurred", e);
 603         } catch (NoSuchAlgorithmException e) {
 604             logger.error("A NoSuchAlgorithmException occurred", e);
 605         }
 606         return null;
 607     }
 608 }