コード例 #1
0
bool PolicyCompiler_pf::addLoopbackForRedirect::processNext()
{
    PolicyRule *rule = getNext(); if (rule==NULL) return false;
    PolicyCompiler_pf *pf_comp = dynamic_cast<PolicyCompiler_pf*>(compiler);

    RuleElementDst *dst = rule->getDst();
    RuleElementSrv *srv = rule->getSrv();

    if (pf_comp->redirect_rules_info==NULL)
        compiler->abort(
            rule, 
            "addLoopbackForRedirect needs a valid pointer to "
            "the list<NATCompiler_pf::redirectRuleInfo> object");

    tmp_queue.push_back(rule);

    if (pf_comp->redirect_rules_info->empty()) return true;

    for (FWObject::iterator i=srv->begin(); i!=srv->end(); i++) 
    {
	FWObject *o1 = FWReference::getObject(*i);
	Service *s = Service::cast( o1 );
	assert(s);

        for (FWObject::iterator j=dst->begin(); j!=dst->end(); j++) 
        {
            FWObject *o2 = FWReference::getObject(*j);
            if (o2->getName() == "self" && DNSName::isA(o2)) continue;

            Address *a = Address::cast( o2 );
            assert(a);

            list<NATCompiler_pf::redirectRuleInfo>::const_iterator k;
            for (k=pf_comp->redirect_rules_info->begin();
                 k!=pf_comp->redirect_rules_info->end(); ++k)
            {
                Address *old_tdst_obj = Address::cast(
                    compiler->dbcopy->findInIndex(k->old_tdst));
                Service *tsrv_obj = Service::cast(
                    compiler->dbcopy->findInIndex(k->tsrv));

                if ( *a == *(old_tdst_obj) &&  *s == *(tsrv_obj) )
                {
// insert address used for redirection in the NAT rule.
                    FWObject *new_tdst_obj = compiler->dbcopy->findInIndex(k->new_tdst);
                    dst->addRef(new_tdst_obj);
                    return true;
                }
            }
        }
    }

    return true;
}
コード例 #2
0
bool PolicyCompiler_pf::splitIfFirewallInDst::processNext()
{
    PolicyRule *rule = getNext(); if (rule==NULL) return false;

    PolicyRule *r;
    RuleElementDst *dst = rule->getDst();    assert(dst);

    if (dst->size()==1 || dst->getNeg())
    {
	tmp_queue.push_back(rule);
	return true;
    }

    FWObject *fw_in_dst = NULL;
    vector<FWObject*> cl;
    for (FWObject::iterator i1=dst->begin(); i1!=dst->end(); ++i1)
    {
	FWObject *obj = FWReference::getObject(*i1);
	if (obj==NULL)
            compiler->abort(rule, "Broken Dst");

	if (obj->getId()==compiler->getFwId())
        {
	    fw_in_dst = obj;

	    RuleElementDst *ndst;

	    r = compiler->dbcopy->createPolicyRule();
	    compiler->temp_ruleset->add(r);
	    r->duplicate(rule);
	    ndst = r->getDst();
	    ndst->clearChildren();
	    ndst->setAnyElement();
	    ndst->addRef( compiler->fw );
	    tmp_queue.push_back(r);
	}
    }
    if (fw_in_dst!=NULL) dst->removeRef( fw_in_dst );

    tmp_queue.push_back(rule);
    return true;
}
コード例 #3
0
string PolicyCompiler::debugPrintRule(Rule *r)
{
    PolicyRule *rule=PolicyRule::cast(r);

//    FWOptions *ruleopt =rule->getOptionsObject();

    RuleElementSrc *srcrel = rule->getSrc();
    RuleElementDst *dstrel = rule->getDst();
    RuleElementSrv *srvrel = rule->getSrv();
    RuleElementItf *itfrel = rule->getItf();

//    int iface_id = rule->getInterfaceId();
//    Interface *rule_iface = Interface::cast(dbcopy->findInIndex(iface_id));

    ostringstream str;

//    str << setw(70) << setfill('-') << "-";

    int no=0;
    FWObject::iterator i1=srcrel->begin();
    FWObject::iterator i2=dstrel->begin(); 
    FWObject::iterator i3=srvrel->begin();
    FWObject::iterator i4=itfrel->begin();

    while ( i1!=srcrel->end() || i2!=dstrel->end() || i3!=srvrel->end() ||
            i4!=itfrel->end())
    {
        str << endl;

        string src=" ";
        string dst=" ";
        string srv=" ";
        string itf=" ";

        int src_id = -1;
        int dst_id = -1;
        int srv_id = -1;

        if (srcrel->getNeg()) src = "!";
        if (dstrel->getNeg()) dst = "!";
        if (srvrel->getNeg()) srv = "!";
        if (itfrel->getNeg()) itf = "!";

        if (i1!=srcrel->end())
        {
            FWObject *o = FWReference::getObject(*i1);
            src += o->getName();
            src_id = o->getId();
        }

        if (i2!=dstrel->end())
        {
            FWObject *o = FWReference::getObject(*i2);
            dst += o->getName();
            dst_id = o->getId();
        }

        if (i3!=srvrel->end())
        {
            FWObject *o = FWReference::getObject(*i3);
            srv += o->getName();
            srv_id = o->getId();
        }

        if (i4!=itfrel->end())
        {
            ostringstream str;
            FWObject *o = FWReference::getObject(*i4);
            str << o->getName() << "(" << o->getId() << ")";
            itf += str.str();
        }

        int w = 0;
        if (no==0)
        {
            str << rule->getLabel();
            w = rule->getLabel().length();
        }
        
        str <<  setw(10-w)  << setfill(' ') << " ";

        str <<  setw(18) << setfill(' ') << src.c_str() << "(" << src_id << ")";
        str <<  setw(18) << setfill(' ') << dst.c_str() << "(" << dst_id << ")";
        str <<  setw(12) << setfill(' ') << srv.c_str() << "(" << srv_id << ")";
        str <<  setw(8)  << setfill(' ') << itf.c_str();

        if (no==0)
        {
            str <<  setw(9)  << setfill(' ') << rule->getActionAsString().c_str();
            str <<  setw(12)  << setfill(' ') << rule->getDirectionAsString().c_str();
            if (rule->getLogging()) str << " LOG";
        } else
            str <<  setw(18)  << setfill(' ') << " ";

        ++no;

        if ( i1!=srcrel->end() ) ++i1;
        if ( i2!=dstrel->end() ) ++i2;
        if ( i3!=srvrel->end() ) ++i3;
        if ( i4!=itfrel->end() ) ++i4;
    }
    return str.str();
}
コード例 #4
0
bool PolicyCompiler_pix::matchTranslatedAddresses::processNext()
{
    PolicyRule *rule = getNext(); if (rule==nullptr) return false;

    string version = compiler->fw->getStr("version");

    transformed_rules.clear();

    RuleElementSrc *srcrel = rule->getSrc();
    RuleElementDst *dstrel = rule->getDst();
    RuleElementSrv *srvrel = rule->getSrv();

    for (list<FWObject*>::iterator i1=srcrel->begin(); i1!=srcrel->end(); ++i1) 
    {
        for (list<FWObject*>::iterator i2=dstrel->begin(); i2!=dstrel->end(); ++i2) 
        {
            for (list<FWObject*>::iterator i3=srvrel->begin(); i3!=srvrel->end(); ++i3) 
            {
                FWObject *o1  = *i1;
                FWObject *o2  = *i2;
                FWObject *o3  = *i3;
                FWObject *obj1 = nullptr;
                FWObject *obj2 = nullptr;
                FWObject *obj3 = nullptr;

                obj1 = FWReference::getObject(o1);
                Address *src = Address::cast(obj1);
                assert(src!=nullptr);

                obj2 = FWReference::getObject(o2);
                Address *dst = Address::cast(obj2);
                assert(dst!=nullptr);

                obj3 = FWReference::getObject(o3);
                Service *srv = Service::cast(obj3);
                assert(srv!=nullptr);

                list<NATRule*> tl = findMatchingNATRules(src, dst, srv);

                for( list<NATRule*>::iterator t=tl.begin(); t!=tl.end(); ++t)
                    action(rule, *t, src, dst, srv);

            }
        }
    }
/*
 *list transformed_rules has all the atomic rules that have a matching
 * NAT rule, with dst and srv already converted. We just add them to
 * the policy on top of the original rule.
 */
    list<PolicyRule*>::iterator i1;
    for (i1=transformed_rules.begin(); i1!=transformed_rules.end(); ++i1)
    {
        PolicyRule *r=PolicyRule::cast( *i1 );
        tmp_queue.push_back(r);
    }

    tmp_queue.push_back(rule);

    return true;
}