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8033745: Reflect upon Nashorn reflection

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Reviewed-by: ahgross, attila, jlaskey
This commit is contained in:
Athijegannathan Sundararajan 2014-02-21 10:01:59 +05:30
parent 2194adb36b
commit 1110a73114
1 changed files with 22 additions and 0 deletions
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22
nashorn/src/jdk/nashorn/internal/runtime/linker/ReflectionCheckLinker.java
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@ -39,16 +39,38 @@ import jdk.nashorn.internal.runtime.Context;
* Check java reflection permission for java reflective and java.lang.invoke access from scripts
*/
final class ReflectionCheckLinker implements TypeBasedGuardingDynamicLinker{
private static final Class<?> STATEMENT_CLASS = getBeanClass("Statement");
private static final Class<?> XMLENCODER_CLASS = getBeanClass("XMLEncoder");
private static final Class<?> XMLDECODER_CLASS = getBeanClass("XMLDecoder");
private static Class<?> getBeanClass(final String name) {
try {
return Class.forName("java.beans." + name);
} catch (final ClassNotFoundException cnfe) {
// Possible to miss this class in other profiles.
return null;
}
}
@Override
public boolean canLinkType(final Class<?> type) {
return isReflectionClass(type);
}
private static boolean isReflectionClass(final Class<?> type) {
// Class or ClassLoader subclasses
if (type == Class.class || ClassLoader.class.isAssignableFrom(type)) {
return true;
}
// check for bean reflection
if ((STATEMENT_CLASS != null && STATEMENT_CLASS.isAssignableFrom(type)) ||
(XMLENCODER_CLASS != null && XMLENCODER_CLASS.isAssignableFrom(type)) ||
(XMLDECODER_CLASS != null && XMLDECODER_CLASS.isAssignableFrom(type))) {
return true;
}
// package name check
final String name = type.getName();
return name.startsWith("java.lang.reflect.") || name.startsWith("java.lang.invoke.");
}