1 /* 2 * Copyright (c) 2008, 2009, 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 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 }