src/java.prefs/windows/native/libprefs/WindowsPreferences.c
changeset 47216 71c04702a3d5
parent 33653 c1ee09fe3274
child 49154 28729cf7e4bc
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/java.prefs/windows/native/libprefs/WindowsPreferences.c	Tue Sep 12 19:03:39 2017 +0200
@@ -0,0 +1,260 @@
+/*
+ * Copyright (c) 2000, 2015, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.  Oracle designates this
+ * particular file as subject to the "Classpath" exception as provided
+ * by Oracle in the LICENSE file that accompanied this code.
+ *
+ * This code 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 General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+#include <stdlib.h>
+#include <windows.h>
+#include "jni.h"
+#include "jni_util.h"
+#include "jvm.h"
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/*
+ * Declare library specific JNI_Onload entry if static build
+ */
+DEF_STATIC_JNI_OnLoad
+
+    JNIEXPORT jintArray JNICALL Java_java_util_prefs_WindowsPreferences_WindowsRegOpenKey
+               (JNIEnv* env, jclass this_class, jint hKey, jbyteArray lpSubKey, jint securityMask) {
+        HKEY handle;
+        char* str;
+        int tmp[2];
+        int errorCode=-1;
+        jintArray result;
+        str = (*env)->GetByteArrayElements(env, lpSubKey, NULL);
+        CHECK_NULL_RETURN(str, NULL);
+        errorCode =  RegOpenKeyEx((HKEY)hKey, str, 0, securityMask, &handle);
+        (*env)->ReleaseByteArrayElements(env, lpSubKey, str, 0);
+        tmp[0]= (int) handle;
+        tmp[1]= errorCode;
+        result = (*env)->NewIntArray(env,2);
+        if (result != NULL) {
+            (*env)->SetIntArrayRegion(env, result, 0, 2, tmp);
+        }
+        return result;
+    }
+
+    JNIEXPORT jint JNICALL Java_java_util_prefs_WindowsPreferences_WindowsRegCloseKey
+               (JNIEnv* env, jclass this_class, jint hKey) {
+        return (jint) RegCloseKey((HKEY) hKey);
+    };
+
+    JNIEXPORT jintArray JNICALL Java_java_util_prefs_WindowsPreferences_WindowsRegCreateKeyEx
+               (JNIEnv* env, jclass this_class, jint hKey, jbyteArray lpSubKey) {
+        HKEY handle;
+        char* str;
+        int tmp[3];
+        DWORD lpdwDisposition;
+        int errorCode;
+        jintArray result = NULL;
+        str = (*env)->GetByteArrayElements(env, lpSubKey, NULL);
+        CHECK_NULL_RETURN(str, NULL);
+        errorCode =  RegCreateKeyEx((HKEY)hKey, str, 0, NULL,
+                      REG_OPTION_NON_VOLATILE, KEY_READ,
+                      NULL, &handle, &lpdwDisposition);
+        (*env)->ReleaseByteArrayElements(env, lpSubKey, str, 0);
+        tmp[0]= (int) handle;
+        tmp[1]= errorCode;
+        tmp[2]= lpdwDisposition;
+        result = (*env)->NewIntArray(env,3);
+        if (result != NULL) {
+            (*env)->SetIntArrayRegion(env, result, 0, 3, tmp);
+        }
+        return result;
+    }
+
+    JNIEXPORT jint JNICALL Java_java_util_prefs_WindowsPreferences_WindowsRegDeleteKey
+              (JNIEnv* env, jclass this_class, jint hKey, jbyteArray lpSubKey) {
+        char* str;
+        int result;
+        str = (*env)->GetByteArrayElements(env, lpSubKey, NULL);
+        CHECK_NULL_RETURN(str, -1);
+        result = RegDeleteKey((HKEY)hKey, str);
+        (*env)->ReleaseByteArrayElements(env, lpSubKey, str, 0);
+        return  result;
+
+    };
+
+    JNIEXPORT jint JNICALL Java_java_util_prefs_WindowsPreferences_WindowsRegFlushKey
+        (JNIEnv* env, jclass this_class, jint hKey) {
+        return RegFlushKey ((HKEY)hKey);
+        }
+
+    JNIEXPORT jbyteArray JNICALL Java_java_util_prefs_WindowsPreferences_WindowsRegQueryValueEx
+         (JNIEnv* env, jclass this_class, jint hKey, jbyteArray valueName) {
+        char* valueNameStr;
+        char* buffer;
+        jbyteArray result;
+        DWORD valueType;
+        DWORD valueSize;
+        valueNameStr = (*env)->GetByteArrayElements(env, valueName, NULL);
+        CHECK_NULL_RETURN(valueNameStr, NULL);
+        if (RegQueryValueEx((HKEY)hKey, valueNameStr, NULL, &valueType, NULL,
+                                                 &valueSize) != ERROR_SUCCESS) {
+        (*env)->ReleaseByteArrayElements(env, valueName, valueNameStr, 0);
+        return NULL;
+        }
+
+        buffer = (char*)malloc(valueSize);
+        if (buffer != NULL) {
+            if (RegQueryValueEx((HKEY)hKey, valueNameStr, NULL, &valueType, buffer,
+                &valueSize) != ERROR_SUCCESS) {
+                free(buffer);
+                (*env)->ReleaseByteArrayElements(env, valueName, valueNameStr, 0);
+                return NULL;
+            }
+        } else {
+            JNU_ThrowOutOfMemoryError(env, "native memory allocation failed");
+            (*env)->ReleaseByteArrayElements(env, valueName, valueNameStr, 0);
+            return NULL;
+        }
+
+        if (valueType == REG_SZ) {
+            result = (*env)->NewByteArray(env, valueSize);
+            if (result != NULL) {
+                (*env)->SetByteArrayRegion(env, result, 0, valueSize, buffer);
+            }
+        } else {
+            result = NULL;
+        }
+        free(buffer);
+        (*env)->ReleaseByteArrayElements(env, valueName, valueNameStr, 0);
+        return result;
+    }
+
+
+
+
+    JNIEXPORT jint JNICALL Java_java_util_prefs_WindowsPreferences_WindowsRegSetValueEx
+    (JNIEnv* env, jclass this_class, jint hKey, jbyteArray valueName, jbyteArray data) {
+        char* valueNameStr;
+        char* dataStr;
+        int size = -1;
+        int nameSize = -1;
+        int error_code = -1;
+        if ((valueName == NULL)||(data == NULL)) {return -1;}
+        size = (*env)->GetArrayLength(env, data);
+        dataStr = (*env)->GetByteArrayElements(env, data, NULL);
+        CHECK_NULL_RETURN(dataStr, -1);
+        valueNameStr = (*env)->GetByteArrayElements(env, valueName, NULL);
+        if (valueNameStr != NULL) {
+            error_code = RegSetValueEx((HKEY)hKey, valueNameStr, 0,
+                                                        REG_SZ, dataStr, size);
+            (*env)->ReleaseByteArrayElements(env, valueName, valueNameStr, 0);
+        }
+        (*env)->ReleaseByteArrayElements(env, data, dataStr, 0);
+        return error_code;
+    }
+
+     JNIEXPORT jint JNICALL Java_java_util_prefs_WindowsPreferences_WindowsRegDeleteValue
+            (JNIEnv* env, jclass this_class, jint hKey, jbyteArray valueName) {
+        char* valueNameStr;
+        int error_code = -1;
+        if (valueName == NULL) {return -1;}
+        valueNameStr = (*env)->GetByteArrayElements(env, valueName, NULL);
+        CHECK_NULL_RETURN(valueNameStr, -1);
+        error_code = RegDeleteValue((HKEY)hKey, valueNameStr);
+        (*env)->ReleaseByteArrayElements(env, valueName, valueNameStr, 0);
+        return error_code;
+     }
+
+    JNIEXPORT jintArray JNICALL Java_java_util_prefs_WindowsPreferences_WindowsRegQueryInfoKey
+                                  (JNIEnv* env, jclass this_class, jint hKey) {
+        jintArray result = NULL;
+        int tmp[5];
+        int valuesNumber = -1;
+        int maxValueNameLength = -1;
+        int maxSubKeyLength = -1;
+        int subKeysNumber = -1;
+        int errorCode = -1;
+        errorCode = RegQueryInfoKey((HKEY)hKey, NULL, NULL, NULL,
+                 &subKeysNumber, &maxSubKeyLength, NULL,
+                 &valuesNumber, &maxValueNameLength,
+                 NULL, NULL, NULL);
+        tmp[0]= subKeysNumber;
+        tmp[1]= (int)errorCode;
+        tmp[2]= valuesNumber;
+        tmp[3]= maxSubKeyLength;
+        tmp[4]= maxValueNameLength;
+        result = (*env)->NewIntArray(env,5);
+        if (result != NULL) {
+            (*env)->SetIntArrayRegion(env, result, 0, 5, tmp);
+        }
+        return result;
+    }
+
+     JNIEXPORT jbyteArray JNICALL Java_java_util_prefs_WindowsPreferences_WindowsRegEnumKeyEx
+     (JNIEnv* env, jclass this_class, jint hKey , jint subKeyIndex, jint maxKeyLength) {
+        int size = maxKeyLength;
+        jbyteArray result;
+        char* buffer = NULL;
+        buffer = (char*)malloc(maxKeyLength);
+        if (buffer == NULL) {
+            JNU_ThrowOutOfMemoryError(env, "native memory allocation failed");
+            return NULL;
+        }
+        if (RegEnumKeyEx((HKEY) hKey, subKeyIndex, buffer, &size, NULL, NULL,
+                                                 NULL, NULL) != ERROR_SUCCESS){
+        free(buffer);
+        return NULL;
+        }
+        result = (*env)->NewByteArray(env, size + 1);
+        if (result != NULL) {
+            (*env)->SetByteArrayRegion(env, result, 0, size + 1, buffer);
+        }
+        free(buffer);
+        return result;
+     }
+
+     JNIEXPORT jbyteArray JNICALL Java_java_util_prefs_WindowsPreferences_WindowsRegEnumValue
+          (JNIEnv* env, jclass this_class, jint hKey , jint valueIndex, jint maxValueNameLength){
+          int size = maxValueNameLength;
+          jbyteArray result;
+          char* buffer = NULL;
+          int error_code;
+          buffer = (char*)malloc(maxValueNameLength);
+          if (buffer == NULL) {
+              JNU_ThrowOutOfMemoryError(env, "native memory allocation failed");
+              return NULL;
+          }
+          error_code = RegEnumValue((HKEY) hKey, valueIndex, buffer,
+                                             &size, NULL, NULL, NULL, NULL);
+          if (error_code!= ERROR_SUCCESS){
+            free(buffer);
+            return NULL;
+          }
+          result = (*env)->NewByteArray(env, size + 1);
+          if (result != NULL) {
+              (*env)->SetByteArrayRegion(env, result, 0, size + 1, buffer);
+          }
+          free(buffer);
+          return result;
+     }
+
+
+#ifdef __cplusplus
+}
+#endif