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
35 JNIEXPORT jstring JNICALL
Java_sun_nio_fs_RegistryFileTypeDetector_queryStringValue(JNIEnv * env,jclass this,jlong keyAddress,jlong nameAddress)36 Java_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