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// Copyright (C) 2010 Internet Systems Consortium, Inc. ("ISC")
//
// Permission to use, copy, modify, and/or distribute this software for any
// purpose with or without fee is hereby granted, provided that the above
// copyright notice and this permission notice appear in all copies.
//
// THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES WITH
// REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
// AND FITNESS. IN NO EVENT SHALL ISC BE LIABLE FOR ANY SPECIAL, DIRECT,
// INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
// LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE
// OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
// PERFORMANCE OF THIS SOFTWARE.
#include <config.h>
#include <string>
#include <boost/lexical_cast.hpp>
#include <exceptions/exceptions.h>
#include <util/buffer.h>
#include <dns/name.h>
#include <dns/messagerenderer.h>
#include <dns/rdata.h>
#include <dns/rdataclass.h>
#include <dns/rdata/generic/detail/lexer_util.h>
using namespace std;
using boost::lexical_cast;
using namespace isc::util;
// BEGIN_ISC_NAMESPACE
// BEGIN_RDATA_NAMESPACE
MX::MX(InputBuffer& buffer, size_t) :
preference_(buffer.readUint16()), mxname_(buffer)
{
// we don't need rdata_len for parsing. if necessary, the caller will
// check consistency.
}
MX::MX(const std::string& mx_str) :
// Fill in dummy name and replace them soon below.
preference_(0), mxname_(Name::ROOT_NAME())
{
try {
std::istringstream ss(mx_str);
MasterLexer lexer;
lexer.pushSource(ss);
const uint32_t num =
lexer.getNextToken(MasterToken::NUMBER).getNumber();
if (num > 65535) {
isc_throw(InvalidRdataText, "Invalid MX preference");
}
preference_ = static_cast<uint16_t>(num);
mxname_ = createNameFromLexer(lexer, NULL);
if (lexer.getNextToken().getType() != MasterToken::END_OF_FILE) {
isc_throw(InvalidRdataText, "extra input text for MX: "
<< mx_str);
}
} catch (const MasterLexer::LexerError& ex) {
isc_throw(InvalidRdataText, "Failed to construct MX from '" <<
mx_str << "': " << ex.what());
}
}
MX::MX(MasterLexer& lexer, const Name* origin,
MasterLoader::Options, MasterLoaderCallbacks&) :
preference_(0), mxname_(".")
{
const uint32_t num = lexer.getNextToken(MasterToken::NUMBER).getNumber();
if (num > 65535) {
isc_throw(InvalidRdataText, "Invalid MX preference");
}
preference_ = static_cast<uint16_t>(num);
mxname_ = createNameFromLexer(lexer, origin);
}
MX::MX(uint16_t preference, const Name& mxname) :
preference_(preference), mxname_(mxname)
{}
MX::MX(const MX& other) :
Rdata(), preference_(other.preference_), mxname_(other.mxname_)
{}
void
MX::toWire(OutputBuffer& buffer) const {
buffer.writeUint16(preference_);
mxname_.toWire(buffer);
}
void
MX::toWire(AbstractMessageRenderer& renderer) const {
renderer.writeUint16(preference_);
renderer.writeName(mxname_);
}
string
MX::toText() const {
return (lexical_cast<string>(preference_) + " " + mxname_.toText());
}
int
MX::compare(const Rdata& other) const {
const MX& other_mx = dynamic_cast<const MX&>(other);
if (preference_ < other_mx.preference_) {
return (-1);
} else if (preference_ > other_mx.preference_) {
return (1);
}
return (compareNames(mxname_, other_mx.mxname_));
}
const Name&
MX::getMXName() const {
return (mxname_);
}
uint16_t
MX::getMXPref() const {
return (preference_);
}
// END_RDATA_NAMESPACE
// END_ISC_NAMESPACE
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