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src/java.base/macosx/classes/sun/nio/fs/UTIFileTypeDetector.java

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rev 55657 : 8227587: Add internal privileged System.loadLibrary
Reviewed-by: rriggs
   1 /*
   2  * Copyright (c) 2015, Oracle and/or its affiliates. All rights reserved.
   3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   4  *
   5  * This code is free software; you can redistribute it and/or modify it
   6  * under the terms of the GNU General Public License version 2 only, as
   7  * published by the Free Software Foundation.  Oracle designates this
   8  * particular file as subject to the "Classpath" exception as provided
   9  * by Oracle in the LICENSE file that accompanied this code.
  10  *
  11  * This code is distributed in the hope that it will be useful, but WITHOUT
  12  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  13  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  14  * version 2 for more details (a copy is included in the LICENSE file that
  15  * accompanied this code).
  16  *
  17  * You should have received a copy of the GNU General Public License version
  18  * 2 along with this work; if not, write to the Free Software Foundation,
  19  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  20  *
  21  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  22  * or visit www.oracle.com if you need additional information or have any
  23  * questions.
  24  */
  25 
  26 package sun.nio.fs;
  27 
  28 import java.io.IOException;
  29 import java.nio.file.Path;
  30 import java.security.AccessController;
  31 import java.security.PrivilegedAction;
  32 
  33 /**
  34  * File type detector that uses a file extension to look up its MIME type
  35  * via the Apple Uniform Type Identifier interfaces.
  36  */
  37 class UTIFileTypeDetector extends AbstractFileTypeDetector {
  38     UTIFileTypeDetector() {
  39         super();
  40     }
  41 
  42     private native String probe0(String fileExtension) throws IOException;
  43 
  44     @Override
  45     protected String implProbeContentType(Path path) throws IOException {
  46         Path fn = path.getFileName();
  47         if (fn == null)
  48             return null;  // no file name
  49 
  50         String ext = getExtension(fn.toString());
  51         if (ext.isEmpty())
  52             return null;  // no extension
  53 
  54         return probe0(ext);
  55     }
  56 
  57     static {
  58         AccessController.doPrivileged(new PrivilegedAction<>() {
  59             @Override
  60             public Void run() {
  61                 System.loadLibrary("nio");
  62                 return null;
  63             }
  64         });
  65     }
  66 }
   1 /*
   2  * Copyright (c) 2015, 2019, Oracle and/or its affiliates. All rights reserved.
   3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   4  *
   5  * This code is free software; you can redistribute it and/or modify it
   6  * under the terms of the GNU General Public License version 2 only, as
   7  * published by the Free Software Foundation.  Oracle designates this
   8  * particular file as subject to the "Classpath" exception as provided
   9  * by Oracle in the LICENSE file that accompanied this code.
  10  *
  11  * This code is distributed in the hope that it will be useful, but WITHOUT
  12  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  13  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  14  * version 2 for more details (a copy is included in the LICENSE file that
  15  * accompanied this code).
  16  *
  17  * You should have received a copy of the GNU General Public License version
  18  * 2 along with this work; if not, write to the Free Software Foundation,
  19  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  20  *
  21  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  22  * or visit www.oracle.com if you need additional information or have any
  23  * questions.
  24  */
  25 
  26 package sun.nio.fs;
  27 
  28 import java.io.IOException;
  29 import java.nio.file.Path;


  30 
  31 /**
  32  * File type detector that uses a file extension to look up its MIME type
  33  * via the Apple Uniform Type Identifier interfaces.
  34  */
  35 class UTIFileTypeDetector extends AbstractFileTypeDetector {
  36     UTIFileTypeDetector() {
  37         super();
  38     }
  39 
  40     private native String probe0(String fileExtension) throws IOException;
  41 
  42     @Override
  43     protected String implProbeContentType(Path path) throws IOException {
  44         Path fn = path.getFileName();
  45         if (fn == null)
  46             return null;  // no file name
  47 
  48         String ext = getExtension(fn.toString());
  49         if (ext.isEmpty())
  50             return null;  // no extension
  51 
  52         return probe0(ext);
  53     }
  54 
  55     static {
  56         jdk.internal.access.SharedSecrets.getJavaLangAccess().loadLibrary("nio");






  57     }
  58 }
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