1/*
2 * Copyright (c) 2008, 2011, 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#include <windows.h>
27
28#include "jni.h"
29#include "jni_util.h"
30#include "jlong.h"
31
32#include "sun_nio_fs_RegistryFileTypeDetector.h"
33
34
35JNIEXPORT jstring JNICALL
36Java_sun_nio_fs_RegistryFileTypeDetector_queryStringValue(JNIEnv* env, jclass this,
37    jlong keyAddress, jlong nameAddress)
38{
39    LPCWSTR lpSubKey= (LPCWSTR)jlong_to_ptr(keyAddress);
40    LPWSTR lpValueName = (LPWSTR)jlong_to_ptr(nameAddress);
41    LONG res;
42    HKEY hKey;
43    jstring result = NULL;
44
45    res = RegOpenKeyExW(HKEY_CLASSES_ROOT, lpSubKey, 0, KEY_READ, &hKey);
46    if (res == ERROR_SUCCESS) {
47        DWORD type;
48        BYTE data[255];
49        DWORD size = sizeof(data);
50
51        res = RegQueryValueExW(hKey, lpValueName, NULL, &type, (LPBYTE)&data, &size);
52        if (res == ERROR_SUCCESS) {
53            if (type == REG_SZ) {
54                jsize len = (jsize)wcslen((WCHAR*)data);
55                result = (*env)->NewString(env, (const jchar*)&data, len);
56            }
57        }
58
59        RegCloseKey(hKey);
60    }
61    return result;
62}
63