1 files changed, 200 insertions, 0 deletions
diff --git a/odk/source/com/sun/star/lib/loader/WinRegKey.java b/odk/source/com/sun/star/lib/loader/WinRegKey.java
new file mode 100644
index 000000000000..d9203b3b37c0
--- /dev/null
+++ b/odk/source/com/sun/star/lib/loader/WinRegKey.java
@@ -0,0 +1,200 @@
+/*************************************************************************
+ *
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * Copyright 2000, 2010 Oracle and/or its affiliates.
+ *
+ * OpenOffice.org - a multi-platform office productivity suite
+ *
+ * This file is part of OpenOffice.org.
+ *
+ * OpenOffice.org is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Lesser General Public License version 3
+ * only, as published by the Free Software Foundation.
+ *
+ * OpenOffice.org is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Lesser General Public License version 3 for more details
+ * (a copy is included in the LICENSE file that accompanied this code).
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * version 3 along with OpenOffice.org.  If not, see
+ * <http://www.openoffice.org/license.html>
+ * for a copy of the LGPLv3 License.
+ *
+ ************************************************************************/
+
+package com.sun.star.lib.loader;
+
+import java.io.BufferedInputStream;
+import java.io.BufferedOutputStream;
+import java.io.File;
+import java.io.FileOutputStream;
+import java.io.InputStream;
+
+
+/**
+ * This class provides functionality for reading string values from the
+ * Windows Registry. It requires the native library unowinreg.dll.
+ */
+final class WinRegKey {
+
+    private String m_rootKeyName;
+    private String m_subKeyName;
+
+    // native methods to access the windows registry
+    private static native boolean winreg_RegOpenClassesRoot( long[] hkresult );
+    private static native boolean winreg_RegOpenCurrentConfig(
+        long[] hkresult );
+    private static native boolean winreg_RegOpenCurrentUser( long[] hkresult );
+    private static native boolean winreg_RegOpenLocalMachine( long[] hkresult );
+    private static native boolean winreg_RegOpenUsers( long[] hkresult );
+    private static native boolean winreg_RegOpenKeyEx( long parent, String name,
+        long[] hkresult );
+    private static native boolean winreg_RegCloseKey( long hkey );
+    private static native boolean winreg_RegQueryValueEx(
+        long hkey, String value, long[] type,
+        byte[] data, long[] size );
+    private static native boolean winreg_RegQueryInfoKey(
+        long hkey, long[] subkeys, long[] maxSubkeyLen,
+        long[] values, long[] maxValueNameLen,
+        long[] maxValueLen, long[] secDescriptor );
+
+    // load the native library unowinreg.dll
+    static {
+        try {
+            ClassLoader cl = WinRegKey.class.getClassLoader();
+            InputStream is = cl.getResourceAsStream( "win/unowinreg.dll" );
+            if ( is != null ) {
+                // generate a temporary name for lib file and write to temp
+                // location
+                BufferedInputStream istream = new BufferedInputStream( is );
+                File libfile = File.createTempFile( "unowinreg", ".dll" );
+                libfile.deleteOnExit(); // ensure deletion
+                BufferedOutputStream ostream = new BufferedOutputStream(
+                    new FileOutputStream( libfile ) );
+                int bsize = 2048; int n = 0;
+                byte[] buffer = new byte[bsize];
+                while ( ( n = istream.read( buffer, 0, bsize ) ) != -1 ) {
+                    ostream.write( buffer, 0, n );
+                }
+                istream.close();
+                ostream.close();
+                // load library
+                System.load( libfile.getPath() );
+            } else {
+                // If the library cannot be found as a class loader resource,
+                // try the global System.loadLibrary(). The JVM will look for
+                // it in the java.library.path.
+                System.loadLibrary( "unowinreg" );
+            }
+        } catch ( java.lang.Exception e ) {
+            System.err.println( "com.sun.star.lib.loader.WinRegKey: " +
+                "loading of native library failed!" + e );
+        }
+    }
+
+    /**
+     * Constructs a <code>WinRegKey</code>.
+     */
+    public WinRegKey( String rootKeyName, String subKeyName ) {
+        m_rootKeyName = rootKeyName;
+        m_subKeyName = subKeyName;
+    }
+
+    /**
+     * Reads a string value for the specified value name.
+     */
+    public String getStringValue( String valueName ) throws WinRegKeyException {
+        byte[] data = getValue( valueName );
+        // remove terminating null character
+        return new String( data, 0, data.length - 1 );
+    }
+
+    /**
+     * Reads a value for the specified value name.
+     */
+    private byte[] getValue( String valueName ) throws WinRegKeyException {
+
+        byte[] result = null;
+        long[] hkey = {0};
+
+        // open the specified registry key
+        boolean bRet = false;
+        long[] hroot = {0};
+        if ( m_rootKeyName.equals( "HKEY_CLASSES_ROOT" ) ) {
+            bRet = winreg_RegOpenClassesRoot( hroot );
+        } else if ( m_rootKeyName.equals( "HKEY_CURRENT_CONFIG" ) ) {
+            bRet = winreg_RegOpenCurrentConfig( hroot );
+        } else if ( m_rootKeyName.equals( "HKEY_CURRENT_USER" ) ) {
+            bRet = winreg_RegOpenCurrentUser( hroot );
+        } else if ( m_rootKeyName.equals( "HKEY_LOCAL_MACHINE" ) ) {
+            bRet = winreg_RegOpenLocalMachine( hroot );
+        } else if ( m_rootKeyName.equals( "HKEY_USERS" ) ) {
+            bRet = winreg_RegOpenUsers( hroot );
+        } else {
+            throw new WinRegKeyException( "unknown root registry key!");
+        }
+        if ( !bRet ) {
+            throw new WinRegKeyException( "opening root registry key " +
+                "failed!" );
+        }
+        if ( !winreg_RegOpenKeyEx( hroot[0], m_subKeyName, hkey ) ) {
+            if ( !winreg_RegCloseKey( hroot[0] ) ) {
+                throw new WinRegKeyException( "opening registry key and " +
+                    "releasing root registry key handle failed!" );
+            }
+            throw new WinRegKeyException( "opening registry key failed!" );
+        }
+
+        // get the size of the longest data component among the key's values
+        long[] subkeys = {0};
+        long[] maxSubkeyLen = {0};
+        long[] values = {0};
+        long[] maxValueNameLen = {0};
+        long[] maxValueLen = {0};
+        long[] secDescriptor = {0};
+        if ( !winreg_RegQueryInfoKey( hkey[0], subkeys, maxSubkeyLen,
+                 values, maxValueNameLen, maxValueLen, secDescriptor ) ) {
+            if ( !winreg_RegCloseKey( hkey[0] ) ||
+                 !winreg_RegCloseKey( hroot[0] ) ) {
+                throw new WinRegKeyException( "retrieving information about " +
+                    "the registry key and releasing registry key handles " +
+                    "failed!" );
+            }
+            throw new WinRegKeyException( "retrieving information about " +
+                "the registry key failed!" );
+        }
+
+        // get the data for the specified value name
+        byte[] buffer = new byte[ (int) maxValueLen[0] ];
+        long[] size = new long[1];
+        size[0] = buffer.length;
+        long[] type = new long[1];
+        type[0] = 0;
+        if ( !winreg_RegQueryValueEx( hkey[0], valueName, type, buffer,
+                 size ) ) {
+            if ( !winreg_RegCloseKey( hkey[0] ) ||
+                 !winreg_RegCloseKey( hroot[0] ) ) {
+                throw new WinRegKeyException( "retrieving data for the " +
+                    "specified value name and releasing registry key handles " +
+                    "failed!" );
+            }
+            throw new WinRegKeyException( "retrieving data for the " +
+                "specified value name failed!" );
+        }
+
+        // release registry key handles
+        if ( !winreg_RegCloseKey( hkey[0] ) ||
+             !winreg_RegCloseKey( hroot[0] ) ) {
+            throw new WinRegKeyException( "releasing registry key handles " +
+                "failed!" );
+        }
+
+        result = new byte[ (int) size[0] ];
+        System.arraycopy( buffer, 0, result, 0, (int)size[0] );
+
+        return result;
+    }
+}