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Diffstat (limited to 'src/lib/dns/rdata/generic/ns_2.cc')
-rw-r--r-- | src/lib/dns/rdata/generic/ns_2.cc | 121 |
1 files changed, 121 insertions, 0 deletions
diff --git a/src/lib/dns/rdata/generic/ns_2.cc b/src/lib/dns/rdata/generic/ns_2.cc new file mode 100644 index 0000000..7c1fd01 --- /dev/null +++ b/src/lib/dns/rdata/generic/ns_2.cc @@ -0,0 +1,121 @@ +// 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 <string> + +#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 namespace isc::util; +using isc::dns::rdata::generic::detail::createNameFromLexer; + +// BEGIN_ISC_NAMESPACE +// BEGIN_RDATA_NAMESPACE + +/// \brief Constructor from string. +/// +/// The given string must represent a valid NS RDATA. There can be extra +/// space characters at the beginning or end of the text (which are simply +/// ignored), but other extra text, including a new line, will make the +/// construction fail with an exception. +/// +/// The NSDNAME must be absolute since there's no parameter that +/// specifies the origin name; if it is not absolute, \c +/// MissingNameOrigin exception will be thrown. These must not be +/// represented as a quoted string. +/// +/// \throw Others Exception from the Name and RRTTL constructors. +/// \throw InvalidRdataText Other general syntax errors. +NS::NS(const std::string& namestr) : + // Fill in dummy name and replace them soon below. + nsname_(Name::ROOT_NAME()) +{ + try { + std::istringstream ss(namestr); + MasterLexer lexer; + lexer.pushSource(ss); + + nsname_ = createNameFromLexer(lexer, NULL); + + if (lexer.getNextToken().getType() != MasterToken::END_OF_FILE) { + isc_throw(InvalidRdataText, "extra input text for NS: " + << namestr); + } + } catch (const MasterLexer::LexerError& ex) { + isc_throw(InvalidRdataText, "Failed to construct NS from '" << + namestr << "': " << ex.what()); + } +} + +NS::NS(InputBuffer& buffer, size_t) : + nsname_(buffer) +{ + // we don't need rdata_len for parsing. if necessary, the caller will + // check consistency. +} + +/// \brief Constructor with a context of MasterLexer. +/// +/// The \c lexer should point to the beginning of valid textual +/// representation of an NS RDATA. The NSDNAME field can be +/// non-absolute if \c origin is non-NULL, in which case \c origin is +/// used to make it absolute. It must not be represented as a quoted +/// string. +/// +/// \throw MasterLexer::LexerError General parsing error such as missing field. +/// \throw Other Exceptions from the Name and RRTTL constructors if +/// construction of textual fields as these objects fail. +/// +/// \param lexer A \c MasterLexer object parsing a master file for the +/// RDATA to be created +/// \param origin If non NULL, specifies the origin of NSDNAME when it +/// is non-absolute. +NS::NS(MasterLexer& lexer, const Name* origin, + MasterLoader::Options, MasterLoaderCallbacks&) : + nsname_(createNameFromLexer(lexer, origin)) +{} + +NS::NS(const NS& other) : + Rdata(), nsname_(other.nsname_) +{} + +void +NS::toWire(OutputBuffer& buffer) const { + nsname_.toWire(buffer); +} + +void +NS::toWire(AbstractMessageRenderer& renderer) const { + renderer.writeName(nsname_); +} + +string +NS::toText() const { + return (nsname_.toText()); +} + +int +NS::compare(const Rdata& other) const { + const NS& other_ns = dynamic_cast<const NS&>(other); + + return (compareNames(nsname_, other_ns.nsname_)); +} + +const Name& +NS::getNSName() const { + return (nsname_); +} + +// END_RDATA_NAMESPACE +// END_ISC_NAMESPACE |