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// Copyright (C) 2010-2020 Internet Systems Consortium, Inc. ("ISC")
//
// This Source Code Form is subject to the terms of the Mozilla Public
// License, v. 2.0. If a copy of the MPL was not distributed with this
// file, You can obtain one at http://mozilla.org/MPL/2.0/.
#include <config.h>
#include <dns/masterload.h>
#include <dns/master_loader.h>
#include <dns/name.h>
#include <dns/rdata.h>
#include <dns/rdataclass.h>
#include <dns/rrclass.h>
#include <dns/rrset.h>
#include <dns/rrttl.h>
#include <dns/rrtype.h>
#include <dns/rrcollator.h>
#include <exceptions/exceptions.h>
#include <boost/scoped_ptr.hpp>
#include <functional>
#include <istream>
#include <fstream>
#include <sstream>
#include <string>
#include <cctype>
#include <cerrno>
using namespace isc::dns::rdata;
using namespace std;
namespace ph = std::placeholders;
namespace isc {
namespace dns {
namespace {
void
callbackWrapper(const RRsetPtr& rrset, MasterLoadCallback callback,
const Name* origin)
{
// Origin related validation:
// - reject out-of-zone data
// - reject SOA whose owner is not at the top of zone
const NameComparisonResult cmp_result =
rrset->getName().compare(*origin);
if (cmp_result.getRelation() != NameComparisonResult::EQUAL &&
cmp_result.getRelation() != NameComparisonResult::SUBDOMAIN) {
isc_throw(MasterLoadError, "Out-of-zone data for " << *origin
<< "/" << rrset->getClass() << ": " << rrset->getName());
}
if (rrset->getType() == RRType::SOA() &&
cmp_result.getRelation() != NameComparisonResult::EQUAL) {
isc_throw(MasterLoadError, "SOA not at top of zone: "
<< *rrset);
}
callback(rrset);
}
template <typename InputType>
void
loadHelper(InputType input, const Name& origin,
const RRClass& zone_class, MasterLoadCallback callback)
{
RRCollator rr_collator(std::bind(callbackWrapper, ph::_1, callback,
&origin));
MasterLoader loader(input, origin, zone_class,
MasterLoaderCallbacks::getNullCallbacks(),
rr_collator.getCallback());
try {
loader.load();
} catch (const MasterLoaderError& ex) {
isc_throw(MasterLoadError, ex.what());
}
rr_collator.flush();
}
}
void
masterLoad(const char* const filename, const Name& origin,
const RRClass& zone_class, MasterLoadCallback callback)
{
if ((filename == NULL) || (*filename == '\0')) {
isc_throw(MasterLoadError, "Name of master file must not be null");
}
loadHelper<const char*>(filename, origin, zone_class, callback);
}
void
masterLoad(istream& input, const Name& origin, const RRClass& zone_class,
MasterLoadCallback callback, const char*)
{
loadHelper<istream&>(input, origin, zone_class, callback);
}
} // namespace dns
} // namespace isc
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