jdk/src/windows/native/sun/security/krb5/WindowsDirectory.c

/*
 * Copyright 2005 Sun Microsystems, Inc.  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.  Sun designates this
 * particular file as subject to the "Classpath" exception as provided
 * by Sun 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
 * CA 95054 USA or visit www.sun.com if you need additional information or
 * have any questions.
 */

#include <jni.h>
#include <windows.h>
#include <stdlib.h>

/*
 * Class:     sun_security_krb5_Config
 * Method:    getWindowsDirectory
 * Signature: ()Ljava/lang/String;
 */
JNIEXPORT jstring JNICALL Java_sun_security_krb5_Config_getWindowsDirectory(
    JNIEnv* env, jclass configClass) {
    LPTSTR lpPath = NULL;
    UINT uLength ;
    jstring path = NULL;

    if (uLength = GetWindowsDirectory(lpPath, 0)) {
        lpPath = (LPTSTR)malloc(sizeof(TCHAR) * uLength);
        if (lpPath != NULL) {
            if (GetWindowsDirectory(lpPath, uLength)) {
                path = (*env)->NewStringUTF(env, lpPath);
            }
            free(lpPath);
        }
    }
    return path;
}