src/main/java/org/onap/dmaap/dbcapi/aaf/AafConnection.java

   1 /*-
   2  * ============LICENSE_START=======================================================
   3   * org.onap.dmaap
   4  * ================================================================================
   5  * Copyright (C) 2017 AT&T Intellectual Property. All rights reserved.
   6  *
   7  * Modifications Copyright (C) 2019 IBM.
   8  * ================================================================================
   9  * Licensed under the Apache License, Version 2.0 (the "License");
  10  * you may not use this file except in compliance with the License.
  11  * You may obtain a copy of the License at
  12  *
  13  *      http://www.apache.org/licenses/LICENSE-2.0
  14  *
  15  * Unless required by applicable law or agreed to in writing, software
  16  * distributed under the License is distributed on an "AS IS" BASIS,
  17  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  18  * See the License for the specific language governing permissions and
  19  * limitations under the License.
  20  * ============LICENSE_END=========================================================
  21  */
  22
  23 package org.onap.dmaap.dbcapi.aaf;
  24
  25
  26
  27
  28
  29 import java.io.BufferedReader;
  30 import java.io.IOException;
  31 import java.io.InputStream;
  32 import java.io.InputStreamReader;
  33 import java.io.OutputStream;
  34 import java.net.ProtocolException;
  35 import java.net.URL;
  36 import java.net.UnknownHostException;
  37 import java.net.ConnectException;
  38
  39 import javax.net.ssl.HttpsURLConnection;
  40 import javax.net.ssl.SSLContext;
  41 import javax.net.ssl.SSLHandshakeException;
  42
  43 import javax.net.ssl.TrustManager;
  44 import javax.net.ssl.X509TrustManager;
  45 import org.apache.commons.codec.binary.Base64;
  46 import org.onap.dmaap.dbcapi.logging.BaseLoggingClass;
  47 import org.onap.dmaap.dbcapi.logging.DmaapbcLogMessageEnum;
  48 import org.onap.dmaap.dbcapi.util.DmaapConfig;
  49
  50
  51 public class AafConnection extends BaseLoggingClass {
  52
  53
  54
  55
  56
  57         private String aafCred;
  58         private String unit_test;
  59
  60
  61         private HttpsURLConnection uc;
  62
  63
  64         public AafConnection( String cred ) {
  65                 aafCred = cred;
  66                 DmaapConfig p = (DmaapConfig)DmaapConfig.getConfig();
  67         unit_test = p.getProperty( "UnitTest", "No" );
  68
  69         }
  70
  71
  72         private boolean makeConnection( String pURL ) {
  73
  74                 try {
  75                         URL u = new URL( pURL );
  76                         uc = (HttpsURLConnection) u.openConnection();
  77                         uc.setInstanceFollowRedirects(false);
  78                         logger.info( "successful connect to " + pURL );
  79                         return(true);
  80                 } catch ( UnknownHostException uhe ) {
  81                 errorLogger.error(DmaapbcLogMessageEnum.UNKNOWN_HOST_EXCEPTION,  pURL, uhe.getMessage() );
  82                 logger.error("Error", uhe);
  83             return(false);
  84                 } catch (Exception e) {
  85                         logger.error("Error", e);
  86                 errorLogger.error(DmaapbcLogMessageEnum.HTTP_CONNECTION_ERROR,  pURL, e.getMessage());
  87             return(false);
  88         }
  89
  90         }
  91
  92         static String bodyToString( InputStream is ) {
  93                 StringBuilder sb = new StringBuilder();
  94                 BufferedReader br = new BufferedReader( new InputStreamReader(is));
  95                 String line;
  96                 try {
  97                         while ((line = br.readLine()) != null ) {
  98                                 sb.append( line );
  99                         }
 100                 } catch (IOException ex ) {
 101                         errorLogger.error( DmaapbcLogMessageEnum.IO_EXCEPTION + ex.getMessage(),ex);
 102                 }
 103
 104                 return sb.toString();
 105         }
 106
 107
 108
 109         public int postAaf( AafObject obj, String pURL ) {
 110                 logger.info( "entry: postAaf() to  " + pURL  );
 111                 String auth =  "Basic " + Base64.encodeBase64String(aafCred.getBytes());
 112                 int rc = -1;
 113
 114
 115                 if ( ! makeConnection( pURL ) ) {
 116                         return rc;
 117                 };
 118
 119
 120                 byte[] postData = obj.getBytes();
 121                 //logger.info( "post fields=" + postData );  //byte isn't very readable
 122                 String responsemessage = null;
 123                 String responseBody = null;
 124
 125                 try {
 126                         if (auth != null) {
 127                                 uc.setRequestProperty("Authorization", auth);
 128                 }
 129                         uc.setRequestMethod("POST");
 130                         uc.setRequestProperty("Content-Type", "application/json");
 131                         uc.setRequestProperty( "charset", "utf-8");
 132                         uc.setRequestProperty( "Content-Length", Integer.toString( postData.length ));
 133                         uc.setUseCaches(false);
 134                         uc.setDoOutput(true);
 135
 136                         SSLContext sc = SSLContext.getInstance("SSL");
 137                         sc.init(null, trustAllCerts, new java.security.SecureRandom());
 138                         uc.setSSLSocketFactory(sc.getSocketFactory());
 139                         OutputStream os = null;
 140
 141
 142                         try {
 143                  uc.connect();
 144                  os = uc.getOutputStream();
 145                  os.write( postData );
 146
 147             } catch (ProtocolException pe) {
 148                 logger.error("Error", pe);
 149                  // Rcvd error instead of 100-Continue
 150                  try {
 151                      // work around glitch in Java 1.7.0.21 and likely others
 152                      // without this, Java will connect multiple times to the server to run the same request
 153                      uc.setDoOutput(false);
 154                  } catch (Exception e) {
 155                          logger.error("Error", e);
 156                  }
 157             } catch ( SSLHandshakeException she ) {
 158                 logger.error("Error", she);
 159                 errorLogger.error( DmaapbcLogMessageEnum.SSL_HANDSHAKE_ERROR, pURL);
 160                         } catch ( UnknownHostException uhe ) {
 161                                 logger.error("Error", uhe);
 162                                 errorLogger.error(DmaapbcLogMessageEnum.UNKNOWN_HOST_EXCEPTION,  pURL, uhe.getMessage() );
 163                 rc = 500;
 164                 return rc;
 165             } catch ( ConnectException ce ) {
 166                 logger.error("Error", ce);
 167                                 if ( "Yes".equals(unit_test) ) {
 168                                         rc = 201;
 169                                         return rc;
 170                                 }
 171                                 errorLogger.error(DmaapbcLogMessageEnum.HTTP_CONNECTION_EXCEPTION,  pURL, ce.getMessage() );
 172                 rc = 500;
 173                 return rc;
 174                         }
 175                         try {
 176                                 rc = uc.getResponseCode();
 177                         } catch ( SSLHandshakeException she ) {
 178                                 logger.error("Error", she);
 179                                 errorLogger.error( DmaapbcLogMessageEnum.SSL_HANDSHAKE_ERROR, pURL);
 180                 rc = 500;
 181                 return rc;
 182             }
 183                         logger.info( "http response code:" + rc );
 184             responsemessage = uc.getResponseMessage();
 185             logger.info( "responsemessage=" + responsemessage );
 186
 187             if (responsemessage == null) {
 188                  // work around for glitch in Java 1.7.0.21 and likely others
 189                  // When Expect: 100 is set and a non-100 response is received, the response message is not set but the response code is
 190                  String h0 = uc.getHeaderField(0);
 191                  if (h0 != null) {
 192                      int i = h0.indexOf(' ');
 193                      int j = h0.indexOf(' ', i + 1);
 194                      if (i != -1 && j != -1) {
 195                          responsemessage = h0.substring(j + 1);
 196                      }
 197                  }
 198             }
 199             if ( rc >= 200 && rc < 300 ) {
 200                 responseBody = bodyToString( uc.getInputStream() );
 201                 logger.info( "responseBody=" + responseBody );
 202             } else {
 203                         logger.warn( "Unsuccessful response: " + responsemessage );
 204             }
 205
 206                 } catch (Exception e) {
 207             logger.error("Unable to read response  ");
 208             logger.error("Error", e);
 209         }
 210                 finally {
 211                         try {
 212                                 uc.disconnect();
 213                         } catch ( Exception e ) {
 214                                 logger.error("Error", e);
 215                         }
 216                 }
 217                 return rc;
 218
 219         }
 220
 221         public int delAaf(AafObject obj, String pURL) {
 222                 logger.info( "entry: delAaf() to  " + pURL  );
 223                 String auth =  "Basic " + Base64.encodeBase64String(aafCred.getBytes());
 224                 int rc = -1;
 225
 226
 227                 if ( ! makeConnection( pURL ) ) {
 228                         return rc;
 229                 };
 230
 231
 232                 byte[] postData = obj.getBytes();
 233                 //logger.info( "post fields=" + postData );  //byte isn't very readable
 234                 String responsemessage = null;
 235                 String responseBody = null;
 236
 237                 try {
 238                         if (auth != null) {
 239                                 uc.setRequestProperty("Authorization", auth);
 240                 }
 241                         uc.setRequestMethod("DELETE");
 242                         uc.setRequestProperty("Content-Type", "application/json");
 243                         uc.setRequestProperty( "charset", "utf-8");
 244                         uc.setRequestProperty( "Content-Length", Integer.toString( postData.length ));
 245                         uc.setUseCaches(false);
 246                         uc.setDoOutput(true);
 247                         OutputStream os = null;
 248
 249
 250                         try {
 251                  uc.connect();
 252                  os = uc.getOutputStream();
 253                  os.write( postData );
 254
 255             } catch (ProtocolException pe) {
 256                 logger.error("Error", pe);
 257                  // Rcvd error instead of 100-Continue
 258                  try {
 259                      // work around glitch in Java 1.7.0.21 and likely others
 260                      // without this, Java will connect multiple times to the server to run the same request
 261                      uc.setDoOutput(false);
 262                  } catch (Exception e) {
 263                          logger.error("Error", e);
 264                  }
 265             } catch ( SSLHandshakeException she ) {
 266                 errorLogger.error( DmaapbcLogMessageEnum.SSL_HANDSHAKE_ERROR +"For:- "+pURL,she);
 267             }
 268                         try {
 269                                 rc = uc.getResponseCode();
 270                         } catch ( SSLHandshakeException she ) {
 271                                 logger.error("Error", she);
 272                                 errorLogger.error( DmaapbcLogMessageEnum.SSL_HANDSHAKE_ERROR, pURL);
 273                 rc = 500;
 274                 return rc;
 275             }
 276                         logger.info( "http response code:" + rc );
 277             responsemessage = uc.getResponseMessage();
 278             logger.info( "responsemessage=" + responsemessage );
 279
 280             if (responsemessage == null) {
 281                  // work around for glitch in Java 1.7.0.21 and likely others
 282                  // When Expect: 100 is set and a non-100 response is received, the response message is not set but the response code is
 283                  String h0 = uc.getHeaderField(0);
 284                  if (h0 != null) {
 285                      int i = h0.indexOf(' ');
 286                      int j = h0.indexOf(' ', i + 1);
 287                      if (i != -1 && j != -1) {
 288                          responsemessage = h0.substring(j + 1);
 289                      }
 290                  }
 291             }
 292             if ( rc >= 200 && rc < 300 ) {
 293                 responseBody = bodyToString( uc.getInputStream() );
 294                 logger.info( "responseBody=" + responseBody );
 295             } else {
 296                         logger.warn( "Unsuccessful response: " + responsemessage );
 297             }
 298
 299                 } catch (Exception e) {
 300             logger.error("Unable to read response  ");
 301             logger.error("Error", e);
 302         }
 303                 return rc;
 304
 305         }
 306
 307         private TrustManager[] trustAllCerts = new TrustManager[]{
 308                 new X509TrustManager() {
 309
 310                         @Override
 311                         public java.security.cert.X509Certificate[] getAcceptedIssuers()
 312                         {
 313                                 return null;
 314                         }
 315                         @Override
 316                         public void checkClientTrusted(java.security.cert.X509Certificate[] certs, String authType)
 317                         {
 318                                 //No need to implement.
 319                         }
 320                         @Override
 321                         public void checkServerTrusted(java.security.cert.X509Certificate[] certs, String authType)
 322                         {
 323                                 //No need to implement.
 324                         }
 325                 }
 326         };
 327
 328
 329 }