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// Copyright (C) 2010-2015 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 <exceptions/exceptions.h>
#include <dns/messagerenderer.h>
#include <dns/rrparamregistry.h>
#include <dns/rrclass.h>
#include <util/buffer.h>
#include <stdint.h>
#include <string>
using namespace isc::dns;
using namespace isc::util;
using namespace std;
namespace isc {
namespace dns {
RRClass::RRClass(const std::string& class_str) {
uint16_t classcode;
if (!RRParamRegistry::getRegistry().textToClassCode(class_str, classcode)) {
isc_throw(InvalidRRClass,
"Unrecognized RR class string: " + class_str);
}
classcode_ = classcode;
}
RRClass::RRClass(InputBuffer& buffer) {
if (buffer.getLength() - buffer.getPosition() < sizeof(uint16_t)) {
isc_throw(IncompleteRRClass, "incomplete wire-format RR class");
}
classcode_ = buffer.readUint16();
}
const string
RRClass::toText() const {
return (RRParamRegistry::getRegistry().codeToClassText(classcode_));
}
void
RRClass::toWire(OutputBuffer& buffer) const {
buffer.writeUint16(classcode_);
}
void
RRClass::toWire(AbstractMessageRenderer& renderer) const {
renderer.writeUint16(classcode_);
}
RRClass*
RRClass::createFromText(const string& class_str) {
uint16_t class_code;
if (RRParamRegistry::getRegistry().textToClassCode(class_str,
class_code)) {
return (new RRClass(class_code));
}
return (0);
}
ostream&
operator<<(ostream& os, const RRClass& rrclass) {
os << rrclass.toText();
return (os);
}
}
}
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