bundles/org.simantics.db.procore.server.environment/src/org/simantics/db/procore/server/environment/windows/Msi.java

   1 /*******************************************************************************
   2  * Copyright (c) 2007, 2010 Association for Decentralized Information Management
   3  * in Industry THTH ry.
   4  * All rights reserved. This program and the accompanying materials
   5  * are made available under the terms of the Eclipse Public License v1.0
   6  * which accompanies this distribution, and is available at
   7  * http://www.eclipse.org/legal/epl-v10.html
   8  *
   9  * Contributors:
  10  *     VTT Technical Research Centre of Finland - initial API and implementation
  11  *******************************************************************************/
  12 package org.simantics.db.procore.server.environment.windows;
  13
  14 import java.io.Closeable;
  15 import java.io.File;
  16 import java.io.FileInputStream;
  17 import java.io.FileNotFoundException;
  18 import java.io.FileOutputStream;
  19 import java.io.IOException;
  20 import java.io.InputStream;
  21 import java.net.URL;
  22 import java.net.URLDecoder;
  23 import java.security.MessageDigest;
  24 import java.security.NoSuchAlgorithmException;
  25 import java.util.Arrays;
  26
  27 import org.simantics.db.procore.server.environment.ExecutionEnvironment;
  28 import org.simantics.db.procore.server.environment.ExecutionEnvironmentException;
  29
  30 /**
  31  * Provides Java access to Windows Msi API functions:
  32  * <ul>
  33  * <li>{@link #MsiQueryProductState(String)} (see <a
  34  * href="http://msdn.microsoft.com/en-us/library/aa370363(VS.85).aspx">MSDN</a>)</li>
  35  * </ul>
  36  *
  37  * @author Tuukka Lehtonen
  38  */
  39 public class Msi {
  40
  41     public static void checkOneOfProductsInstalled(Product... products) throws ExecutionEnvironmentException {
  42         StringBuilder sb = new StringBuilder();
  43         sb.append("None of the following products are installed properly:\n");
  44         for (Product product : products) {
  45             ProductState state = Msi.MsiQueryProductState(product.getCode());
  46             switch (state) {
  47                 case DEFAULT:
  48                     // One of the listed products is installed OK.
  49                     return;
  50                 default:
  51                     sb.append("\t" + product);
  52                     sb.append(" - MsiQueryProductState returned ");
  53                     sb.append(state);
  54                     sb.append("\n");
  55             }
  56         }
  57         throw new ExecutionEnvironmentException("Cannot run ProCore database server in this environment due to the following problems:\n" + sb.toString(), Arrays.asList(products));
  58     }
  59
  60     public static void checkProductsInstalled(Product... products) throws ExecutionEnvironmentException {
  61         StringBuilder sb = new StringBuilder();
  62         for (Product product : products) {
  63             ProductState state = Msi.MsiQueryProductState(product.getCode());
  64             switch (state) {
  65                 case DEFAULT:
  66                     // Installed OK
  67                     continue;
  68                 default:
  69                     sb.append("\tProduct " + product + " is not installed properly, MsiQueryProductState returned " + state);
  70                     sb.append("\n");
  71             }
  72         }
  73         if (sb.length() > 0) {
  74             // Something is not installed right, throw exception
  75             throw new ExecutionEnvironmentException("Cannot run ProCore database server in this environment due to the following problems:\n" + sb.toString(), Arrays.asList(products));
  76         }
  77     }
  78
  79     // -------------------------------------------------------------------------
  80
  81     public static ProductState MsiQueryProductState(String productCode) {
  82         int result = MsiQueryProductState0(productCode);
  83         return ProductState.of(result);
  84     }
  85
  86     private static native int MsiQueryProductState0(String productCode);
  87
  88     // -------------------------------------------------------------------------
  89
  90     private static final String DLL_NAME = "msijni.dll";
  91     private static final String DLL_NAME_64 = "msijni64.dll";
  92
  93     static {
  94         initialize();
  95     }
  96
  97     private static void initialize() {
  98         ExecutionEnvironment env = ExecutionEnvironment.calculate();
  99         String libName = null;
 100         switch (env.arch) {
 101             case X86:
 102                 libName = DLL_NAME;
 103                 break;
 104             case X86_64:
 105                 libName = DLL_NAME_64;
 106                 break;
 107             default:
 108                 return;
 109         }
 110
 111         URL libURL = Msi.class.getResource("/" + libName);
 112         if (libURL != null) {
 113             try {
 114                 if ("file".equals(libURL.getProtocol())) {
 115                     File path = new File(URLDecoder.decode(libURL.getPath(), "UTF-8"));
 116                     initialize(path);
 117                 } else {
 118                     File libFile = extractLib(libURL, libName);
 119                     initialize(libFile);
 120                 }
 121             } catch (IOException e) {
 122                 e.printStackTrace();
 123             }
 124         }
 125     }
 126
 127     private static void initialize(File path) {
 128         //System.out.println("load msijni: " + path);
 129         System.load(path.toString());
 130     }
 131
 132     /**
 133      * Extracts the specified source file in the specified bundle into the
 134      * specified local directory.
 135      *
 136      * @param url the source URL to stream the resource from
 137      * @param targetFile the target file to write the resource to
 138      * @param deleteOnExit <code>true</code> to use {@link File#deleteOnExit()}
 139      *        on the resulting file. Note that this does not guarantee that the
 140      *        file is deleted when the JVM exits
 141      * @return the resulting file
 142      * @throws FileNotFoundException
 143      */
 144     private static File copyResource(URL url, File targetFile) throws IOException, FileNotFoundException {
 145         FileOutputStream os = null;
 146         InputStream is = null;
 147         try {
 148             if (targetFile.exists())
 149                 targetFile.delete();
 150
 151             is = url.openStream();
 152             int read;
 153             byte [] buffer = new byte [16384];
 154             os = new FileOutputStream (targetFile);
 155             while ((read = is.read (buffer)) != -1) {
 156                 os.write(buffer, 0, read);
 157             }
 158             os.close ();
 159             is.close ();
 160
 161             return targetFile;
 162         } finally {
 163             uncheckedClose(os);
 164             uncheckedClose(is);
 165         }
 166     }
 167
 168
 169     private static void uncheckedClose(Closeable closeable) {
 170         try {
 171             if (closeable != null)
 172                 closeable.close();
 173         } catch (IOException e) {
 174             //ignore
 175         }
 176     }
 177
 178     private static File extractLib(URL libURL, String libName) throws FileNotFoundException, IOException {
 179         String tmpDirStr = System.getProperty("java.io.tmpdir");
 180         if (tmpDirStr == null)
 181             throw new NullPointerException("java.io.tmpdir property is null");
 182         File tmpDir = new File(tmpDirStr);
 183         File libFile = new File(tmpDir, libName);
 184
 185         if (libFile.exists()) {
 186             if (libFile.isFile()) {
 187                 try {
 188                     byte[] origSum = computeSum(libURL);
 189                     byte[] targetSum = computeSum(libFile);
 190                     if (Arrays.equals(origSum, targetSum))
 191                         return libFile;
 192                 } catch (NoSuchAlgorithmException e) {
 193                     // TODO Auto-generated catch block
 194                     e.printStackTrace();
 195                 }
 196             }
 197         }
 198
 199         return copyResource(libURL, libFile);
 200     }
 201
 202     public static byte[] computeSum(InputStream in) throws IOException {
 203         if (in == null)
 204             throw new IllegalArgumentException("Input cannot be null!");
 205
 206         try {
 207             MessageDigest md = MessageDigest.getInstance("MD5");
 208             byte[] data = new byte[64 * 1024];
 209
 210             while (true) {
 211                 int read = in.read(data);
 212                 if (read == -1) {
 213                     return md.digest();
 214                 }
 215                 md.update(data, 0, read);
 216             }
 217         } catch (NoSuchAlgorithmException e) {
 218             // Should not be possible for MD5
 219             throw new IOException(e);
 220         }
 221     }
 222
 223     public static byte[] computeSum(File f) throws IOException, NoSuchAlgorithmException {
 224         InputStream in = null;
 225         try {
 226             in = new FileInputStream(f);
 227             return computeSum(in);
 228         } finally {
 229             if (in != null)
 230                 in.close();
 231         }
 232     }
 233
 234     public static byte[] computeSum(URL url) throws IOException, NoSuchAlgorithmException {
 235         InputStream in = null;
 236         try {
 237             in = url.openStream();
 238             return computeSum(in);
 239         } finally {
 240             if (in != null)
 241                 in.close();
 242         }
 243     }
 244
 245 }