static {
try {
AccessController.doPrivileged(
new PrivilegedExceptionAction<Object>() {
public Object run() throws Exception {
setupJurisdictionPolicies();
return null;
}
});
isRestricted = defaultPolicy.implies(CryptoAllPermission.INSTANCE) ? false : true;
} catch (Exception e) {
throw new SecurityException("Can not initialize cryptographic mechanism", e);
}
}
/*
* Retuns the CodeBase for the given class.
*/
static URL getCodeBase(final Class<?> clazz) {
URL url = codeBaseCacheRef.get(clazz);
if (url == null) {
url =
AccessController.doPrivileged(
new PrivilegedAction<URL>() {
public URL run() {
ProtectionDomain pd = clazz.getProtectionDomain();
if (pd != null) {
CodeSource cs = pd.getCodeSource();
if (cs != null) {
return cs.getLocation();
}
}
return NULL_URL;
}
});
codeBaseCacheRef.put(clazz, url);
}
return (url == NULL_URL) ? null : url;
}