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#include "sortlist.hh"
#include "dnsrecords.hh"
void SortList::clear()
{
d_sortlist.clear();
}
int SortList::getMaxOrder(const Netmask& formask) const
{
int order=0;
auto place = d_sortlist.lookup(formask);
if(place && place->first == formask) {
for(const auto& o : place->second.d_orders)
order = std::max(order, o.second);
}
return order;
}
void SortList::addEntry(const Netmask& formask, const Netmask& valmask, int order)
{
if(order < 0) {
order=getMaxOrder(formask);
++order;
}
// cout<<"Adding for netmask "<<formask.toString()<<" the order instruction that "<<valmask.toString()<<" is order "<<order<<endl;
d_sortlist.insert(formask).second.d_orders.insert(valmask).second=order;
}
std::unique_ptr<SortListOrderCmp> SortList::getOrderCmp(const ComboAddress& who) const
{
if(!d_sortlist.match(who)) {
return std::unique_ptr<SortListOrderCmp>();
}
auto fnd = d_sortlist.lookup(who);
// cerr<<"Returning sort order for "<<who.toString()<<", have "<<fnd->second.d_orders.size()<<" entries"<<endl;
return make_unique<SortListOrderCmp>(fnd->second);
}
// call this with **stable_sort**
bool SortListOrderCmp::operator()(const DNSRecord& ar, const DNSRecord& br) const
{
bool aAddr = (ar.d_type == QType::A || ar.d_type == QType::AAAA);
bool bAddr = (br.d_type == QType::A || br.d_type == QType::AAAA);
// anything address related is always 'larger', rest is equal
if(aAddr && !bAddr)
return false;
else if(!aAddr && bAddr)
return true;
else if(!aAddr && !bAddr)
return false;
int aOrder=std::numeric_limits<int>::max();
int bOrder=aOrder;
ComboAddress a=getAddr(ar), b=getAddr(br);
if(d_slo.d_orders.match(a))
aOrder = d_slo.d_orders.lookup(a)->second;
else {
// cout<<"Could not find anything for "<<a.toString()<<" in our orders!"<<endl;
}
if(d_slo.d_orders.match(b))
bOrder = d_slo.d_orders.lookup(b)->second;
else {
// cout<<"Could not find anything for "<<b.toString()<<" in our orders!"<<endl;
}
return aOrder < bOrder;
}
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