nokia/vnfmdriver/vfcadaptorservice/vfcadaptor/src/main/java/org/onap/vfc/nfvo/driver/vnfm/svnfm/cbam/impl/MultipartUtility.java

   1 /*
   2  * Copyright 2016-2017, Nokia Corporation
   3  *
   4  * Licensed under the Apache License, Version 2.0 (the "License");
   5  * you may not use this file except in compliance with the License.
   6  * You may obtain a copy of the License at
   7  *
   8  *     http://www.apache.org/licenses/LICENSE-2.0
   9  *
  10  * Unless required by applicable law or agreed to in writing, software
  11  * distributed under the License is distributed on an "AS IS" BASIS,
  12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  13  * See the License for the specific language governing permissions and
  14  * limitations under the License.
  15  */
  16
  17 package org.onap.vfc.nfvo.driver.vnfm.svnfm.cbam.impl;
  18
  19 import java.io.BufferedReader;
  20 import java.io.File;
  21 import java.io.FileInputStream;
  22 import java.io.IOException;
  23 import java.io.InputStreamReader;
  24 import java.io.OutputStream;
  25 import java.io.OutputStreamWriter;
  26 import java.io.PrintWriter;
  27 import java.net.URL;
  28 import java.net.URLConnection;
  29 import java.security.KeyStore;
  30 import java.security.SecureRandom;
  31 import java.security.cert.CertificateException;
  32 import java.security.cert.X509Certificate;
  33 import java.util.ArrayList;
  34 import java.util.List;
  35 import java.security.NoSuchAlgorithmException;
  36 import java.security.KeyManagementException;
  37
  38 import javax.net.ssl.HostnameVerifier;
  39 import javax.net.ssl.HttpsURLConnection;
  40 import javax.net.ssl.KeyManager;
  41 import javax.net.ssl.KeyManagerFactory;
  42 import javax.net.ssl.SSLContext;
  43 import javax.net.ssl.SSLSession;
  44 import javax.net.ssl.TrustManager;
  45 import javax.net.ssl.TrustManagerFactory;
  46 import javax.net.ssl.X509TrustManager;
  47
  48 import org.slf4j.Logger;
  49 import org.slf4j.LoggerFactory;
  50 import org.onap.vfc.nfvo.driver.vnfm.svnfm.cbam.bo.SslConfInfo;
  51 import org.onap.vfc.nfvo.driver.vnfm.svnfm.common.util.CommonUtil;
  52
  53 import com.google.gson.Gson;
  54
  55 /**
  56  * This utility class provides an abstraction layer for sending multipart HTTP
  57  * POST requests to a web server.
  58  * @author www.codejava.net
  59  *
  60  */
  61 public class MultipartUtility {
  62         private static final Logger logger = LoggerFactory.getLogger(MultipartUtility.class);
  63     private final String boundary;
  64     private static final String LINE_FEED = "\r\n";
  65     private HttpsURLConnection httpConn;
  66     private String charset;
  67     private OutputStream outputStream;
  68     private PrintWriter writer;
  69     private Gson gson = new Gson();
  70
  71     /**
  72      * This constructor initializes a new HTTP POST request with content type
  73      * is set to multipart/form-data
  74      * @param requestURL
  75      * @param charset
  76      * @throws IOException
  77      */
  78     public MultipartUtility(String requestURL, String charset)
  79             throws CertificateException, IOException, NoSuchAlgorithmException, KeyManagementException{
  80         this.charset = charset;
  81
  82         // creates a unique boundary based on time stamp
  83         boundary = "---" + System.currentTimeMillis() + "---";
  84
  85         HostnameVerifier hv = new HostnameVerifier() {
  86             public boolean verify(String urlHostName, SSLSession session) {
  87                 return true;
  88             }
  89         };
  90         TrustManager[] trustAllCerts = new TrustManager[1];
  91         TrustManager tm = new TrustManager() {
  92
  93                     public X509Certificate[] getAcceptedIssuers() {
  94                         return null;
  95                     }
  96
  97                     public boolean isServerTrusted(X509Certificate[] certs) {
  98                         return true;
  99                     }
 100
 101                     public boolean isClientTrusted(X509Certificate[] certs) {
 102                         return true;
 103                     }
 104
 105                     public void checkServerTrusted(X509Certificate[] certs, String authType)
 106                             throws CertificateException {
 107                         return;
 108                     }
 109
 110                     public void checkClientTrusted(X509Certificate[] certs, String authType)
 111                             throws CertificateException {
 112                         return;
 113                     }
 114         };
 115         trustAllCerts[0] = tm;
 116         SSLContext sslContext = SSLContext.getInstance("SSL");
 117         String filePath = "/etc/conf/sslconf.json";
 118         String fileContent = CommonUtil.getJsonStrFromFile(filePath);
 119         sslContext.init(createKeyManager(gson.fromJson(fileContent, SslConfInfo.class)), createTrustManager(gson.fromJson(fileContent, SslConfInfo.class)), new SecureRandom());
 120         sslContext.init(null, trustAllCerts, null);
 121         sslContext.init(null, new TrustManager[] {new TrustAnyTrustManager()}, new SecureRandom());
 122         HttpsURLConnection.setDefaultSSLSocketFactory(sslContext.getSocketFactory());
 123         HttpsURLConnection.setDefaultHostnameVerifier(hv);
 124
 125         URL url = new URL(requestURL);
 126         httpConn = (HttpsURLConnection) url.openConnection();
 127         httpConn.setRequestMethod("POST");
 128         httpConn.setUseCaches(false);
 129         httpConn.setDoOutput(true); // indicates POST method
 130         httpConn.setDoInput(true);
 131         httpConn.setRequestProperty("Content-Type",
 132                 "multipart/form-data; boundary=" + boundary);
 133         httpConn.setRequestProperty("User-Agent", "CodeJava Agent");
 134         httpConn.setRequestProperty("Test", "Bonjour");
 135         outputStream = httpConn.getOutputStream();
 136         writer = new PrintWriter(new OutputStreamWriter(outputStream, charset),
 137                 true);
 138     }
 139
 140     private static class TrustAnyTrustManager implements X509TrustManager {
 141
 142         @Override
 143         public X509Certificate[] getAcceptedIssuers() {
 144             return new X509Certificate[] {};
 145         }
 146
 147         @Override
 148         public void checkServerTrusted(X509Certificate[] certs, String authType) {
 149             // NOSONAR
 150         }
 151
 152         @Override
 153         public void checkClientTrusted(X509Certificate[] certs, String authType) {
 154             // NOSONAR
 155         }
 156     }
 157
 158     private KeyManager[] createKeyManager(SslConfInfo sslConf) {
 159         KeyManager[] kms = null;
 160         try {
 161             String CERT_STORE = "/etc/conf/server.p12";
 162             String CERT_STORE_CRED = "Changeme_123";
 163             String KEY_STORE_TYPE = "PKCS12";
 164             if(sslConf != null) {
 165                 CERT_STORE = sslConf.getKeyStore();
 166                 CERT_STORE_CRED= sslConf.getKeyStorePass();
 167                 KEY_STORE_TYPE = sslConf.getKeyStoreType();
 168             }
 169             // load jks file
 170             try(FileInputStream f_certStore = new FileInputStream(CommonUtil.getAppRoot() + CERT_STORE)){
 171                     KeyStore ks = KeyStore.getInstance(KEY_STORE_TYPE);
 172                     ks.load(f_certStore, CERT_STORE_CRED.toCharArray());
 173
 174
 175             // init and create
 176             String alg = KeyManagerFactory.getDefaultAlgorithm();
 177             KeyManagerFactory kmFact = KeyManagerFactory.getInstance(alg);
 178             kmFact.init(ks, CERT_STORE_CRED.toCharArray());
 179
 180             kms = kmFact.getKeyManagers();
 181             }
 182         } catch(Exception e) {
 183             logger.error("create KeyManager fail!", e);
 184         }
 185         return kms;
 186     }
 187
 188     private TrustManager[] createTrustManager(SslConfInfo sslConf) {
 189         TrustManager[] tms = null;
 190         try {
 191
 192             String TRUST_STORE = "/etc/conf/trust.jks";
 193             String TRUST_STORE_CRED = "Changeme_123";
 194             String TRUST_STORE_TYPE = "jks";
 195             if(sslConf != null) {
 196                 TRUST_STORE = sslConf.getTrustStore();
 197                 TRUST_STORE_CRED = sslConf.getTrustStorePass();
 198                 TRUST_STORE_TYPE = sslConf.getTrustStoreType();
 199             }
 200             String jksFilePath1 =CommonUtil.getAppRoot() + TRUST_STORE;
 201             logger.info("jks path is " + jksFilePath1);
 202             try(FileInputStream f_trustStore = new FileInputStream(jksFilePath1)){
 203                     KeyStore ks = KeyStore.getInstance(TRUST_STORE_TYPE);
 204                     ks.load(f_trustStore, TRUST_STORE_CRED.toCharArray());
 205
 206
 207             String alg = TrustManagerFactory.getDefaultAlgorithm();
 208             TrustManagerFactory tmFact = TrustManagerFactory.getInstance(alg);
 209             tmFact.init(ks);
 210             tms = tmFact.getTrustManagers();
 211             }
 212
 213         } catch(Exception e) {
 214             logger.error("create TrustManager fail!", e);
 215         }
 216         return tms;
 217     }
 218
 219     /**
 220      * Adds a upload file section to the request
 221      * @param fieldName name attribute in <input type="file" name="..." />
 222      * @param uploadFile a File to be uploaded
 223      * @throws IOException
 224      */
 225     public void addFilePart(String fieldName, File uploadFile)
 226             throws IOException {
 227         String fileName = uploadFile.getName();
 228         writer.append("--" + boundary).append(LINE_FEED);
 229         writer.append(
 230                 "Content-Disposition: form-data; name=\"" + fieldName
 231                         + "\"; filename=\"" + fileName + "\"")
 232                 .append(LINE_FEED);
 233         writer.append(
 234                 "Content-Type: "
 235                         + URLConnection.guessContentTypeFromName(fileName))
 236                 .append(LINE_FEED);
 237         writer.append("Content-Transfer-Encoding: binary").append(LINE_FEED);
 238         writer.append(LINE_FEED);
 239         writer.flush();
 240
 241         try(FileInputStream inputStream = new FileInputStream(uploadFile)){
 242                 byte[] buffer = new byte[4096];
 243                 int bytesRead = -1;
 244                 while ((bytesRead = inputStream.read(buffer)) != -1) {
 245                         outputStream.write(buffer, 0, bytesRead);
 246                 }
 247                 outputStream.flush();
 248         }
 249
 250         writer.append(LINE_FEED);
 251         writer.flush();
 252     }
 253
 254     /**
 255      * Adds a header field to the request.
 256      * @param name - name of the header field
 257      * @param value - value of the header field
 258      */
 259     public void addHeaderField(String name, String value) {
 260         writer.append(name + ": " + value).append(LINE_FEED);
 261         writer.flush();
 262     }
 263
 264     /**
 265      * Completes the request and receives response from the server.
 266      * @return a list of Strings as response in case the server returned
 267      * status OK, otherwise an exception is thrown.
 268      * @throws IOException
 269      */
 270     public List<String> finish() throws IOException {
 271         List<String> response = new ArrayList<String>();
 272
 273         writer.append(LINE_FEED).flush();
 274         writer.append("--" + boundary + "--").append(LINE_FEED);
 275         writer.close();
 276
 277         // checks server's status code first
 278         int status = httpConn.getResponseCode();
 279         logger.info("MultipartUtility --> finish " + httpConn.getResponseMessage());
 280         if (status == HttpsURLConnection.HTTP_OK) {
 281             BufferedReader reader = new BufferedReader(new InputStreamReader(
 282                     httpConn.getInputStream()));
 283             String line = null;
 284             while ((line = reader.readLine()) != null) {
 285                 response.add(line);
 286             }
 287             reader.close();
 288             httpConn.disconnect();
 289         } else {
 290             throw new IOException("Server returned non-OK status: " + status);
 291         }
 292
 293         return response;
 294     }
 295 }