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