private bool defaultImplies(ProtectionDomain domain, Permission permission)
{
if (domain == null && permission == null)
{
throw new java.lang.NullPointerException();
}
bool implies = false;
if (domain != null)
{
PermissionCollection total = getPermissions(domain);
PermissionCollection inherent = domain.getPermissions();
if (inherent != null)
{
java.util.Enumeration <Permission> en = inherent.elements();
while (en.hasMoreElements())
{
total.add(en.nextElement());
}
}
try {
implies = total.implies(permission);
} catch (java.lang.NullPointerException) {
// return false instead of throwing the NullPointerException
implies = false;
}
}
return(implies);
}
/**
* Returns a {@code PermissionCollection} describing what permissions are
* allowed for the specified {@code ProtectionDomain} (more specifically,
* its {@code CodeSource}) based on the current security policy.
* <p />
* Note that this method is not called for classes which are in the
* system domain (i.e. system classes). System classes are always
* given full permissions (i.e. AllPermission). This can not be changed by
* installing a new policy.
*
* @param domain
* the {@code ProtectionDomain} to compute the permissions for.
* @return the permissions that are granted to the specified {@code
* CodeSource}.
*/
public PermissionCollection getPermissions(ProtectionDomain domain)
{
Permissions permissions = new Permissions();
if (domain != null)
{
try {
PermissionCollection cds = getPermissions(domain
.getCodeSource());
if (cds != Policy.UNSUPPORTED_EMPTY_COLLECTION)
{
java.util.Enumeration <Permission> elements = cds.elements();
while (elements.hasMoreElements())
{
permissions.add(elements.nextElement());
}
}
} catch (java.lang.NullPointerException) {
// ignore the exception, just add nothing to the result set
}
PermissionCollection pds = domain.getPermissions();
if (pds != null)
{
java.util.Enumeration <Permission> pdElements = pds.elements();
while (pdElements.hasMoreElements())
{
permissions.add(pdElements.nextElement());
}
}
}
return(permissions);
}
