/*******************************************************************************
* Copyright (c) 2015 QNX Software Systems and others.
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-v10.html
*
* Contributors:
* QNX Software Systems - Initial API and implementation
*******************************************************************************/
#include "stdafx.h"
static jstring getValue(JNIEnv * env, HKEY key, jstring subkey, jstring name) {
const jchar * csubkey = env->GetStringChars(subkey, NULL);
const jchar * cname = env->GetStringChars(name, NULL);
jstring result = NULL;
HKEY skey;
LONG rc = RegOpenKeyEx(key, (const wchar_t *)csubkey, 0, KEY_READ, &skey);
if (rc == ERROR_SUCCESS) {
DWORD type;
wchar_t buffer[256];
DWORD len = sizeof(buffer);
rc = RegQueryValueEx(skey, (const wchar_t *)cname, NULL, &type, (BYTE *)&buffer, &len);
if (rc == ERROR_SUCCESS) {
result = env->NewString((jchar *) buffer, (jsize) wcslen(buffer));
}
RegCloseKey(skey);
}
env->ReleaseStringChars(subkey, csubkey);
env->ReleaseStringChars(name, cname);
return result;
}
extern "C"
JNIEXPORT jstring JNICALL Java_org_eclipse_cdt_utils_WindowsRegistry_getLocalMachineValue(
JNIEnv * env, jobject obj, jstring subkey, jstring name)
{
return getValue(env, HKEY_LOCAL_MACHINE, subkey, name);
}
extern "C"
JNIEXPORT jstring JNICALL Java_org_eclipse_cdt_utils_WindowsRegistry_getCurrentUserValue(
JNIEnv * env, jobject obj, jstring subkey, jstring name)
{
return getValue(env, HKEY_CURRENT_USER, subkey, name);
}
/*
* Given a subkey (string) under HKEY_LOCAL_MACHINE, and an index (starting from 0)
* to the key's array of values, return the name of the indexed value.
* The return value is null on any error or when the index is invalid.
*/
static jstring getValueName(JNIEnv * env, HKEY key, jstring subkey, jint index) {
const jchar * csubkey = env->GetStringChars(subkey, NULL);
jstring result = NULL;
HKEY skey;
LONG rc = RegOpenKeyEx(key, (const wchar_t *)csubkey, 0, KEY_READ, &skey);
if (rc != ERROR_SUCCESS)
return NULL;
wchar_t valueName[256];
DWORD nameSize = sizeof(valueName) + 2;
rc = RegEnumValue(skey, index,
valueName, // UNICODE string
&nameSize,
NULL, NULL,
NULL, // data string
NULL); // size in BYTE of data.
if (rc == ERROR_SUCCESS)
{
result = env->NewString((jchar *)valueName, nameSize);
}
RegCloseKey(skey);
env->ReleaseStringChars(subkey, csubkey);
return result;
}
extern "C"
JNIEXPORT jstring JNICALL Java_org_eclipse_cdt_utils_WindowsRegistry_getLocalMachineValueName(
JNIEnv * env, jobject obj, jstring subkey, jint index)
{
return getValueName(env, HKEY_LOCAL_MACHINE, subkey, index);
}
extern "C"
JNIEXPORT jstring JNICALL Java_org_eclipse_cdt_utils_WindowsRegistry_getCurrentUserValueName(
JNIEnv * env, jobject obj, jstring subkey, jint index)
{
return getValueName(env, HKEY_CURRENT_USER, subkey, index);
}
/*
* Given a subkey (string) under HKEY_LOCAL_MACHINE, and an index (starting from 0)
* to the key's array of keys, return the name of the indexed key.
* The return value is null on any error or when the index is invalid.
*/
static jstring getKeyName(JNIEnv * env, HKEY key, jstring subkey, jint index) {
const jchar * csubkey = env->GetStringChars(subkey, NULL);
jstring result = NULL;
HKEY skey;
LONG rc = RegOpenKeyEx(key, (const wchar_t *)csubkey, 0, KEY_READ, &skey);
if (rc != ERROR_SUCCESS)
return NULL;
wchar_t keyName[256];
DWORD nameSize = sizeof(keyName) + 2;
rc = RegEnumKeyEx(skey, index,
keyName, // UNICODE string
&nameSize,
NULL, NULL,
NULL,
NULL); // size in BYTE of data.
if (rc == ERROR_SUCCESS)
{
result = env->NewString((jchar *)keyName, nameSize);
}
RegCloseKey(skey);
env->ReleaseStringChars(subkey, csubkey);
return result;
}
extern "C"
JNIEXPORT jstring JNICALL Java_org_eclipse_cdt_utils_WindowsRegistry_getLocalMachineKeyName(
JNIEnv * env, jobject obj, jstring subkey, jint index)
{
return getKeyName(env, HKEY_LOCAL_MACHINE, subkey, index);
}
extern "C"
JNIEXPORT jstring JNICALL Java_org_eclipse_cdt_utils_WindowsRegistry_getCurrentUserKeyName(
JNIEnv * env, jobject obj, jstring subkey, jint index)
{
return getKeyName(env, HKEY_CURRENT_USER, subkey, index);
}
