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
  36 import javax.net.ssl.HostnameVerifier;
  37 import javax.net.ssl.HttpsURLConnection;
  38 import javax.net.ssl.KeyManager;
  39 import javax.net.ssl.KeyManagerFactory;
  40 import javax.net.ssl.SSLContext;
  41 import javax.net.ssl.SSLSession;
  42 import javax.net.ssl.TrustManager;
  43 import javax.net.ssl.TrustManagerFactory;
  44 import javax.net.ssl.X509TrustManager;
  45
  46 import org.apache.log4j.Logger;
  47 import org.onap.vfc.nfvo.driver.vnfm.svnfm.cbam.bo.SslConfInfo;
  48 import org.onap.vfc.nfvo.driver.vnfm.svnfm.common.util.CommonUtil;
  49
  50 import com.google.gson.Gson;
  51
  52 /**
  53  * This utility class provides an abstraction layer for sending multipart HTTP
  54  * POST requests to a web server.
  55  * @author www.codejava.net
  56  *
  57  */
  58 public class MultipartUtility {
  59         private static final Logger logger = Logger.getLogger(MultipartUtility.class);
  60     private final String boundary;
  61     private static final String LINE_FEED = "\r\n";
  62     private HttpsURLConnection httpConn;
  63     private String charset;
  64     private OutputStream outputStream;
  65     private PrintWriter writer;
  66     private Gson gson = new Gson();
  67
  68     /**
  69      * This constructor initializes a new HTTP POST request with content type
  70      * is set to multipart/form-data
  71      * @param requestURL
  72      * @param charset
  73      * @throws IOException
  74      */
  75     public MultipartUtility(String requestURL, String charset)
  76             throws Exception {
  77         this.charset = charset;
  78
  79         // creates a unique boundary based on time stamp
  80         boundary = "---" + System.currentTimeMillis() + "---";
  81
  82         HostnameVerifier hv = new HostnameVerifier() {
  83             public boolean verify(String urlHostName, SSLSession session) {
  84                 return true;
  85             }
  86         };
  87         TrustManager[] trustAllCerts = new TrustManager[1];
  88         TrustManager tm = new TrustManager() {
  89
  90                     public X509Certificate[] getAcceptedIssuers() {
  91                         return null;
  92                     }
  93
  94                     public boolean isServerTrusted(X509Certificate[] certs) {
  95                         return true;
  96                     }
  97
  98                     public boolean isClientTrusted(X509Certificate[] certs) {
  99                         return true;
 100                     }
 101
 102                     public void checkServerTrusted(X509Certificate[] certs, String authType)
 103                             throws CertificateException {
 104                         return;
 105                     }
 106
 107                     public void checkClientTrusted(X509Certificate[] certs, String authType)
 108                             throws CertificateException {
 109                         return;
 110                     }
 111         };
 112         trustAllCerts[0] = tm;
 113         SSLContext sslContext = SSLContext.getInstance("SSL");
 114         String filePath = "/etc/conf/sslconf.json";
 115         String fileContent = CommonUtil.getJsonStrFromFile(filePath);
 116         sslContext.init(createKeyManager(gson.fromJson(fileContent, SslConfInfo.class)), createTrustManager(gson.fromJson(fileContent, SslConfInfo.class)), new SecureRandom());
 117         sslContext.init(null, trustAllCerts, null);
 118         sslContext.init(null, new TrustManager[] {new TrustAnyTrustManager()}, new SecureRandom());
 119         HttpsURLConnection.setDefaultSSLSocketFactory(sslContext.getSocketFactory());
 120         HttpsURLConnection.setDefaultHostnameVerifier(hv);
 121
 122         URL url = new URL(requestURL);
 123         httpConn = (HttpsURLConnection) url.openConnection();
 124         httpConn.setRequestMethod("POST");
 125         httpConn.setUseCaches(false);
 126         httpConn.setDoOutput(true); // indicates POST method
 127         httpConn.setDoInput(true);
 128         httpConn.setRequestProperty("Content-Type",
 129                 "multipart/form-data; boundary=" + boundary);
 130         httpConn.setRequestProperty("User-Agent", "CodeJava Agent");
 131         httpConn.setRequestProperty("Test", "Bonjour");
 132         outputStream = httpConn.getOutputStream();
 133         writer = new PrintWriter(new OutputStreamWriter(outputStream, charset),
 134                 true);
 135     }
 136
 137     private static class TrustAnyTrustManager implements X509TrustManager {
 138
 139         @Override
 140         public X509Certificate[] getAcceptedIssuers() {
 141             return new X509Certificate[] {};
 142         }
 143
 144         @Override
 145         public void checkServerTrusted(X509Certificate[] certs, String authType) {
 146             // NOSONAR
 147         }
 148
 149         @Override
 150         public void checkClientTrusted(X509Certificate[] certs, String authType) {
 151             // NOSONAR
 152         }
 153     }
 154
 155     private KeyManager[] createKeyManager(SslConfInfo sslConf) {
 156         KeyManager[] kms = null;
 157         try {
 158             String CERT_STORE = "/etc/conf/server.p12";
 159             String CERT_STORE_PASSWORD = "Changeme_123";
 160             String KEY_STORE_TYPE = "PKCS12";
 161             if(sslConf != null) {
 162                 CERT_STORE = sslConf.getKeyStore();
 163                 CERT_STORE_PASSWORD = sslConf.getKeyStorePass();
 164                 KEY_STORE_TYPE = sslConf.getKeyStoreType();
 165             }
 166             // load jks file
 167             FileInputStream f_certStore = new FileInputStream(CommonUtil.getAppRoot() + CERT_STORE);
 168             KeyStore ks = KeyStore.getInstance(KEY_STORE_TYPE);
 169             ks.load(f_certStore, CERT_STORE_PASSWORD.toCharArray());
 170             f_certStore.close();
 171
 172             // init and create
 173             String alg = KeyManagerFactory.getDefaultAlgorithm();
 174             KeyManagerFactory kmFact = KeyManagerFactory.getInstance(alg);
 175             kmFact.init(ks, CERT_STORE_PASSWORD.toCharArray());
 176
 177             kms = kmFact.getKeyManagers();
 178         } catch(Exception e) {
 179             logger.error("create KeyManager fail!", e);
 180         }
 181         return kms;
 182     }
 183
 184     private TrustManager[] createTrustManager(SslConfInfo sslConf) {
 185         TrustManager[] tms = null;
 186         try {
 187
 188             String TRUST_STORE = "/etc/conf/trust.jks";
 189             String TRUST_STORE_PASSWORD = "Changeme_123";
 190             String TRUST_STORE_TYPE = "jks";
 191             if(sslConf != null) {
 192                 TRUST_STORE = sslConf.getTrustStore();
 193                 TRUST_STORE_PASSWORD = sslConf.getTrustStorePass();
 194                 TRUST_STORE_TYPE = sslConf.getTrustStoreType();
 195             }
 196             String jksFilePath1 =CommonUtil.getAppRoot() + TRUST_STORE;
 197             logger.info("jks path is " + jksFilePath1);
 198             FileInputStream f_trustStore = new FileInputStream(jksFilePath1);
 199             KeyStore ks = KeyStore.getInstance(TRUST_STORE_TYPE);
 200             ks.load(f_trustStore, TRUST_STORE_PASSWORD.toCharArray());
 201             f_trustStore.close();
 202
 203             String alg = TrustManagerFactory.getDefaultAlgorithm();
 204             TrustManagerFactory tmFact = TrustManagerFactory.getInstance(alg);
 205             tmFact.init(ks);
 206             tms = tmFact.getTrustManagers();
 207
 208         } catch(Exception e) {
 209             logger.error("create TrustManager fail!", e);
 210         }
 211         return tms;
 212     }
 213
 214
 215     /**
 216      * Adds a upload file section to the request
 217      * @param fieldName name attribute in <input type="file" name="..." />
 218      * @param uploadFile a File to be uploaded
 219      * @throws IOException
 220      */
 221     public void addFilePart(String fieldName, File uploadFile)
 222             throws IOException {
 223         String fileName = uploadFile.getName();
 224         writer.append("--" + boundary).append(LINE_FEED);
 225         writer.append(
 226                 "Content-Disposition: form-data; name=\"" + fieldName
 227                         + "\"; filename=\"" + fileName + "\"")
 228                 .append(LINE_FEED);
 229         writer.append(
 230                 "Content-Type: "
 231                         + URLConnection.guessContentTypeFromName(fileName))
 232                 .append(LINE_FEED);
 233         writer.append("Content-Transfer-Encoding: binary").append(LINE_FEED);
 234         writer.append(LINE_FEED);
 235         writer.flush();
 236
 237         FileInputStream inputStream = new FileInputStream(uploadFile);
 238         byte[] buffer = new byte[4096];
 239         int bytesRead = -1;
 240         while ((bytesRead = inputStream.read(buffer)) != -1) {
 241             outputStream.write(buffer, 0, bytesRead);
 242         }
 243         outputStream.flush();
 244         inputStream.close();
 245
 246         writer.append(LINE_FEED);
 247         writer.flush();
 248     }
 249
 250     /**
 251      * Adds a header field to the request.
 252      * @param name - name of the header field
 253      * @param value - value of the header field
 254      */
 255     public void addHeaderField(String name, String value) {
 256         writer.append(name + ": " + value).append(LINE_FEED);
 257         writer.flush();
 258     }
 259
 260     /**
 261      * Completes the request and receives response from the server.
 262      * @return a list of Strings as response in case the server returned
 263      * status OK, otherwise an exception is thrown.
 264      * @throws IOException
 265      */
 266     public List<String> finish() throws IOException {
 267         List<String> response = new ArrayList<String>();
 268
 269         writer.append(LINE_FEED).flush();
 270         writer.append("--" + boundary + "--").append(LINE_FEED);
 271         writer.close();
 272
 273         // checks server's status code first
 274         int status = httpConn.getResponseCode();
 275         logger.info("MultipartUtility --> finish " + httpConn.getResponseMessage());
 276         if (status == HttpsURLConnection.HTTP_OK) {
 277             BufferedReader reader = new BufferedReader(new InputStreamReader(
 278                     httpConn.getInputStream()));
 279             String line = null;
 280             while ((line = reader.readLine()) != null) {
 281                 response.add(line);
 282             }
 283             reader.close();
 284             httpConn.disconnect();
 285         } else {
 286             throw new IOException("Server returned non-OK status: " + status);
 287         }
 288
 289         return response;
 290     }
 291 }