7033865: JDK: Add private API for secure/restrictive loading of system dlls

Reviewed-by: alanb

src/share/native/common/jdk_util.h

@@ -28,6 +28,7 @@
 
 #include "jni.h"
 #include "jvm.h"
+#include "jdk_util_md.h"
 
 #ifdef __cplusplus
 extern "C" {

src/solaris/native/common/jdk_util_md.h

+/*
+ * Copyright (c) 2011 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.
+ */
+
+// Currently, there are no unix specific functions defined.

src/windows/native/common/jdk_util_md.c

 /*
- * Copyright (c) 2004, 2005, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2004, 2011, 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
@@ -38,3 +38,25 @@ int JDK_InitJvmHandle() {
 void* JDK_FindJvmEntry(const char* name) {
     return (void*) GetProcAddress(jvm_handle, name);
 }
+
+JNIEXPORT HMODULE JDK_LoadSystemLibrary(const char* name) {
+    HMODULE handle = NULL;
+    char path[MAX_PATH];
+    int ret;
+
+    if (GetSystemDirectory(path, sizeof(path)) != 0) {
+        strcat(path, "\\");
+        strcat(path, name);
+        handle = LoadLibrary(path);
+    }
+
+    if (handle == NULL) {
+        if (GetWindowsDirectory(path, sizeof(path)) != 0) {
+            strcat(path, "\\");
+            strcat(path, name);
+            handle = LoadLibrary(path);
+        }
+    }
+    return handle;
+}
+

src/windows/native/common/jdk_util_md.h

+/*
+ * Copyright (c) 2011 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.
+ */
+
+
+#ifndef JDK_UTIL_MD_H
+#define JDK_UTIL_MD_H
+
+#include "jni.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+JNIEXPORT HMODULE JDK_LoadSystemLibrary(const char* name);
+
+#ifdef __cplusplus
+} /* extern "C" */
+#endif /* __cplusplus */
+
+#endif /* JDK_UTIL_MD_H */