// -*- c-basic-offset: 4; tab-width: 8; indent-tabs-mode: t -*- // vim:set sts=4 ts=8: // Copyright (c) 2001-2006 International Computer Science Institute // // Permission is hereby granted, free of charge, to any person obtaining a // copy of this software and associated documentation files (the "Software") // to deal in the Software without restriction, subject to the conditions // listed in the XORP LICENSE file. These conditions include: you must // preserve this copyright notice, and you cannot mention the copyright // holders in advertising related to the Software without their permission. // The Software is provided WITHOUT ANY WARRANTY, EXPRESS OR IMPLIED. This // notice is a summary of the XORP LICENSE file; the license in that file is // legally binding. // $XORP: xorp/policy/backend/policy_filter.hh,v 1.6 2006/03/16 00:05:09 pavlin Exp $ #ifndef __POLICY_BACKEND_POLICY_FILTER_HH__ #define __POLICY_BACKEND_POLICY_FILTER_HH__ #include "policy/common/varrw.hh" #include "policy/common/policy_exception.hh" #include "policy_instr.hh" #include "set_manager.hh" #include "filter_base.hh" #include "iv_exec.hh" #include "libxorp/ref_ptr.hh" #include <string> #include <map> /** * @short A generic policy filter. * * It may accept/reject/modify any route which supports VarRW. */ class PolicyFilter : public FilterBase { public: /** * @short Exception thrown on configuration error. */ class ConfError : public PolicyException { public: ConfError(const string& err) : PolicyException(err) {} }; PolicyFilter(); ~PolicyFilter(); /** * Configure the filter * * @param str filter configuration. */ void configure(const string& str); /** * Reset the filter. * * Filter becomes a NO-operation -- default action should * be returned everytime an acceptRoute is called. */ void reset(); /** * See if a route is accepted by the filter. * The route may be modified by the filter [through VarRW]. * * @return true if the route is accepted, false otherwise. * @param varrw the VarRW associated with the route being filtered. */ bool acceptRoute(VarRW& varrw); private: vector<PolicyInstr*>* _policies; SetManager _sman; IvExec _exec; // not impl PolicyFilter(const PolicyFilter&); PolicyFilter& operator=(const PolicyFilter&); }; typedef ref_ptr<PolicyFilter> RefPf; #endif // __POLICY_BACKEND_POLICY_FILTER_HH__