/** Check for permission to get a service. */
private <A> void checkAdaptPermission(Class<A> adapterType) {
SecurityManager sm = System.getSecurityManager();
if (sm == null) {
return;
}
sm.checkPermission(new AdaptPermission(adapterType.getName(), this, AdaptPermission.ADAPT));
}
@Override
public boolean hasPermission(Object permission) {
Generation current = (Generation) module.getCurrentRevision().getRevisionInfo();
ProtectionDomain domain = current.getDomain();
if (domain != null) {
if (permission instanceof Permission) {
SecurityManager sm = System.getSecurityManager();
if (sm instanceof EquinoxSecurityManager) {
/*
* If the FrameworkSecurityManager is active, we need to do checks the "right" way.
* We can exploit our knowledge that the security context of FrameworkSecurityManager
* is an AccessControlContext to invoke it properly with the ProtectionDomain.
*/
AccessControlContext acc = new AccessControlContext(new ProtectionDomain[] {domain});
try {
sm.checkPermission((Permission) permission, acc);
return true;
} catch (Exception e) {
return false;
}
}
return domain.implies((Permission) permission);
}
return false;
}
return true;
}
public int hashCode() {
return System.identityHashCode(VersionConstraintImpl.this);
}
private static int identifier(Object o) {
return System.identityHashCode(o);
}