src/java.activation/share/classes/javax/activation/MimetypesFileTypeMap.java

@@ -1,7 +1,7 @@
 /*
- * Copyright (c) 1997, 2012, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 1997, 2017, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
  * under the terms of the GNU General Public License version 2 only, as
  * published by the Free Software Foundation.  Oracle designates this

@@ -26,10 +26,12 @@
 package javax.activation;
 
 import java.io.*;
 import java.net.*;
 import java.util.*;
+import java.security.AccessController;
+import java.security.PrivilegedAction;
 import com.sun.activation.registries.MimeTypeFile;
 import com.sun.activation.registries.LogSupport;
 
 /**
  * This class extends FileTypeMap and provides data typing of files

@@ -41,16 +43,23 @@
  * to search for MIME types in the MimetypesFileTypeMap, it searches
  * MIME types files in the following order:
  * <ol>
  * <li> Programmatically added entries to the MimetypesFileTypeMap instance.
  * <li> The file {@code .mime.types} in the user's home directory.
- * <li> The file {@literal <}<i>java.home</i>{@literal >}{@code /lib/mime.types}.
+ * <li> The file {@code mime.types} in the Java runtime.
  * <li> The file or resources named {@code META-INF/mime.types}.
  * <li> The file or resource named {@code META-INF/mimetypes.default}
  * (usually found only in the {@code activation.jar} file).
  * </ol>
  * <p>
+ * (The current implementation looks for the {@code mime.types} file
+ * in the Java runtime in the directory <i>java.home</i>{@code /conf}
+ * if it exists, and otherwise in the directory
+ * <i>java.home</i>{@code /lib}, where <i>java.home</i> is the value
+ * of the "java.home" System property.  Note that the "conf" directory was
+ * introduced in JDK 9.)
+ * <p>
  * <b>MIME types file format:</b>
  *
  * <pre>{@code
  * # comments begin with a '#'
  * # the format is <mime type> <space separated file extensions>

@@ -70,11 +79,34 @@
      * We manage a collection of databases, searched in order.
      */
     private MimeTypeFile[] DB;
     private static final int PROG = 0;  // programmatically added entries
 
-    private static String defaultType = "application/octet-stream";
+    private static final String defaultType = "application/octet-stream";
+
+    private static final String confDir;
+
+    static {
+        String dir = null;
+        try {
+            dir = (String)AccessController.doPrivileged(
+                new PrivilegedAction() {
+                    public Object run() {
+                        String home = System.getProperty("java.home");
+                        String newdir = home + File.separator + "conf";
+                        File conf = new File(newdir);
+                        if (conf.exists())
+                            return newdir + File.separator;
+                        else
+                            return home + File.separator + "lib" + File.separator;
+                    }
+                });
+        } catch (Exception ex) {
+            // ignore any exceptions
+        }
+        confDir = dir;
+    }
 
     /**
      * The default constructor.
      */
     public MimetypesFileTypeMap() {

@@ -95,15 +127,15 @@
         } catch (SecurityException ex) {}
 
         LogSupport.log("MimetypesFileTypeMap: load SYS");
         try {
             // check system's home
-            String system_mimetypes = System.getProperty("java.home") +
-                File.separator + "lib" + File.separator + "mime.types";
-            mf = loadFile(system_mimetypes);
+            if (confDir != null) {
+                mf = loadFile(confDir + "mime.types");
             if (mf != null)
                 dbv.addElement(mf);
+            }
         } catch (SecurityException ex) {}
 
         LogSupport.log("MimetypesFileTypeMap: load JAR");
         // load from the app's jar file
         loadAllResources(dbv, "META-INF/mime.types");

@@ -237,10 +269,11 @@
     /**
      * Construct a MimetypesFileTypeMap with programmatic entries
      * added from the named file.
      *
      * @param mimeTypeFileName  the file name
+     * @exception       IOException     for errors reading the file
      */
     public MimetypesFileTypeMap(String mimeTypeFileName) throws IOException {
         this();
         DB[PROG] = new MimeTypeFile(mimeTypeFileName);
     }