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Diffstat (limited to 'src/lib/dns/rdata/generic/nsec3_50.cc')
| -rw-r--r-- | src/lib/dns/rdata/generic/nsec3_50.cc | 342 |
1 files changed, 0 insertions, 342 deletions
diff --git a/src/lib/dns/rdata/generic/nsec3_50.cc b/src/lib/dns/rdata/generic/nsec3_50.cc deleted file mode 100644 index 398757931c..0000000000 --- a/src/lib/dns/rdata/generic/nsec3_50.cc +++ /dev/null @@ -1,342 +0,0 @@ -// Copyright (C) 2010-2024 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 <iostream> -#include <iomanip> -#include <string> -#include <sstream> -#include <vector> -#include <cassert> - -#include <boost/lexical_cast.hpp> - -#include <util/encode/encode.h> -#include <util/buffer.h> - -#include <dns/exceptions.h> -#include <dns/messagerenderer.h> -#include <dns/name.h> -#include <dns/rrtype.h> -#include <dns/rrttl.h> -#include <dns/rdata.h> -#include <dns/rdataclass.h> -#include <dns/rdata/generic/detail/nsec_bitmap.h> -#include <dns/rdata/generic/detail/nsec3param_common.h> - -#include <memory> - -#include <stdio.h> -#include <time.h> - -using namespace std; -using namespace isc::dns::rdata::generic::detail::nsec; -using namespace isc::dns::rdata::generic::detail::nsec3; -using namespace isc::util::encode; -using namespace isc::util; - -// BEGIN_ISC_NAMESPACE -// BEGIN_RDATA_NAMESPACE - -struct NSEC3Impl { - // straightforward representation of NSEC3 RDATA fields - NSEC3Impl(uint8_t hashalg, uint8_t flags, uint16_t iterations, - vector<uint8_t>salt, vector<uint8_t>next, - vector<uint8_t> typebits) : - hashalg_(hashalg), flags_(flags), iterations_(iterations), - salt_(salt), next_(next), typebits_(typebits) - {} - - const uint8_t hashalg_; - const uint8_t flags_; - const uint16_t iterations_; - const vector<uint8_t> salt_; - const vector<uint8_t> next_; - const vector<uint8_t> typebits_; -}; - -/// \brief Constructor from string. -/// -/// The given string must represent a valid NSEC3 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 Hash Algorithm, Flags and Iterations fields must be within their -/// valid ranges. The Salt field may contain "-" to indicate that the -/// salt is of length 0. The Salt field must not contain any whitespace. -/// The type mnemonics must be valid, and separated by whitespace. If -/// any invalid mnemonics are found, InvalidRdataText exception is -/// thrown. -/// -/// \throw InvalidRdataText if any fields are out of their valid range, -/// or are incorrect. -/// -/// \param nsec3_str A string containing the RDATA to be created -NSEC3::NSEC3(const std::string& nsec3_str) : - impl_(NULL) -{ - // We use unique_ptr here because if there is an exception in this - // constructor, the destructor is not called and there could be a - // leak of the NSEC3Impl that constructFromLexer() returns. - std::unique_ptr<NSEC3Impl> impl_ptr; - - try { - std::istringstream ss(nsec3_str); - MasterLexer lexer; - lexer.pushSource(ss); - - impl_ptr.reset(constructFromLexer(lexer)); - - if (lexer.getNextToken().getType() != MasterToken::END_OF_FILE) { - isc_throw(InvalidRdataText, - "Extra input text for NSEC3: " << nsec3_str); - } - } catch (const MasterLexer::LexerError& ex) { - isc_throw(InvalidRdataText, - "Failed to construct NSEC3 from '" << nsec3_str << "': " - << ex.what()); - } - - impl_ = impl_ptr.release(); -} - -/// \brief Constructor with a context of MasterLexer. -/// -/// The \c lexer should point to the beginning of valid textual -/// representation of an NSEC3 RDATA. -/// -/// See \c NSEC3::NSEC3(const std::string&) for description of the -/// expected RDATA fields. -/// -/// \throw MasterLexer::LexerError General parsing error such as -/// missing field. -/// \throw InvalidRdataText if any fields are out of their valid range, -/// or are incorrect. -/// -/// \param lexer A \c MasterLexer object parsing a master file for the -/// RDATA to be created -NSEC3::NSEC3(MasterLexer& lexer, const Name*, MasterLoader::Options, - MasterLoaderCallbacks&) : - impl_(NULL) -{ - impl_ = constructFromLexer(lexer); -} - -NSEC3Impl* -NSEC3::constructFromLexer(MasterLexer& lexer) { - vector<uint8_t> salt; - const ParseNSEC3ParamResult params = - parseNSEC3ParamFromLexer("NSEC3", lexer, salt); - - const string& nexthash = - lexer.getNextToken(MasterToken::STRING).getString(); - if (*nexthash.rbegin() == '=') { - isc_throw(InvalidRdataText, "NSEC3 hash has padding: " << nexthash); - } - - vector<uint8_t> next; - decodeBase32Hex(nexthash, next); - if (next.size() > 255) { - isc_throw(InvalidRdataText, "NSEC3 hash is too long: " - << next.size() << " bytes"); - } - - vector<uint8_t> typebits; - // For NSEC3 empty bitmap is possible and allowed. - buildBitmapsFromLexer("NSEC3", lexer, typebits, true); - return (new NSEC3Impl(params.algorithm, params.flags, params.iterations, - salt, next, typebits)); -} - -NSEC3::NSEC3(InputBuffer& buffer, size_t rdata_len) : - impl_(NULL) -{ - vector<uint8_t> salt; - const ParseNSEC3ParamResult params = - parseNSEC3ParamWire("NSEC3", buffer, rdata_len, salt); - - if (rdata_len < 1) { - isc_throw(DNSMessageFORMERR, "NSEC3 too short to contain hash length, " - "length: " << rdata_len + salt.size() + 5); - } - const uint8_t nextlen = buffer.readUint8(); - --rdata_len; - if (nextlen == 0 || rdata_len < nextlen) { - isc_throw(DNSMessageFORMERR, "NSEC3 invalid hash length: " << - static_cast<unsigned int>(nextlen)); - } - - vector<uint8_t> next(nextlen); - buffer.readData(&next[0], nextlen); - rdata_len -= nextlen; - - vector<uint8_t> typebits(rdata_len); - if (rdata_len > 0) { - // Read and parse the bitmaps only when they exist; empty bitmap - // is possible for NSEC3. - buffer.readData(&typebits[0], rdata_len); - checkRRTypeBitmaps("NSEC3", typebits); - } - - impl_ = new NSEC3Impl(params.algorithm, params.flags, params.iterations, - salt, next, typebits); -} - -NSEC3::NSEC3(const NSEC3& source) : - Rdata(), impl_(new NSEC3Impl(*source.impl_)) -{} - -NSEC3& -NSEC3::operator=(const NSEC3& source) { - if (this == &source) { - return (*this); - } - - NSEC3Impl* newimpl = new NSEC3Impl(*source.impl_); - delete impl_; - impl_ = newimpl; - - return (*this); -} - -NSEC3::~NSEC3() { - delete impl_; -} - -string -NSEC3::toText() const { - ostringstream s; - bitmapsToText(impl_->typebits_, s); - - using boost::lexical_cast; - return (lexical_cast<string>(static_cast<int>(impl_->hashalg_)) + - " " + lexical_cast<string>(static_cast<int>(impl_->flags_)) + - " " + lexical_cast<string>(static_cast<int>(impl_->iterations_)) + - " " + (impl_->salt_.empty() ? "-" : encodeHex(impl_->salt_)) + - " " + encodeBase32Hex(impl_->next_) + s.str()); -} - -template <typename OUTPUT_TYPE> -void -toWireHelper(const NSEC3Impl& impl, OUTPUT_TYPE& output) { - output.writeUint8(impl.hashalg_); - output.writeUint8(impl.flags_); - output.writeUint16(impl.iterations_); - output.writeUint8(impl.salt_.size()); - if (!impl.salt_.empty()) { - output.writeData(&impl.salt_[0], impl.salt_.size()); - } - assert(!impl.next_.empty()); - output.writeUint8(impl.next_.size()); - output.writeData(&impl.next_[0], impl.next_.size()); - if (!impl.typebits_.empty()) { - output.writeData(&impl.typebits_[0], impl.typebits_.size()); - } -} - -void -NSEC3::toWire(OutputBuffer& buffer) const { - toWireHelper(*impl_, buffer); -} - -void -NSEC3::toWire(AbstractMessageRenderer& renderer) const { - toWireHelper(*impl_, renderer); -} - -namespace { -// This is a helper subroutine for compare(). It compares two binary -// data stored in vector<uint8_t> objects based on the "Canonical RR Ordering" -// as defined in Section 6.3 of RFC4034, that is, the data are treated -// "as a left-justified unsigned octet sequence in which the absence of an -// octet sorts before a zero octet." -// -// If check_length_first is true, it treats the compared data as if they -// began with a single-octet "length" field whose value is the size of the -// corresponding vector. In this case, if the sizes of the two vectors are -// different the shorter one is always considered the "smaller"; the contents -// of the vector don't matter. -// -// This function returns: -// -1 if v1 is considered smaller than v2 -// 1 if v1 is considered larger than v2 -// 0 otherwise -int -compareVectors(const vector<uint8_t>& v1, const vector<uint8_t>& v2, - bool check_length_first = true) -{ - const size_t len1 = v1.size(); - const size_t len2 = v2.size(); - if (check_length_first && len1 != len2) { - return (len1 - len2); - } - const size_t cmplen = min(len1, len2); - const int cmp = cmplen == 0 ? 0 : memcmp(&v1.at(0), &v2.at(0), cmplen); - if (cmp != 0) { - return (cmp); - } else { - return (len1 - len2); - } -} -} - -int -NSEC3::compare(const Rdata& other) const { - const NSEC3& other_nsec3 = dynamic_cast<const NSEC3&>(other); - - if (impl_->hashalg_ != other_nsec3.impl_->hashalg_) { - return (impl_->hashalg_ < other_nsec3.impl_->hashalg_ ? -1 : 1); - } - if (impl_->flags_ != other_nsec3.impl_->flags_) { - return (impl_->flags_ < other_nsec3.impl_->flags_ ? -1 : 1); - } - if (impl_->iterations_ != other_nsec3.impl_->iterations_) { - return (impl_->iterations_ < other_nsec3.impl_->iterations_ ? -1 : 1); - } - - int cmp = compareVectors(impl_->salt_, other_nsec3.impl_->salt_); - if (cmp != 0) { - return (cmp); - } - cmp = compareVectors(impl_->next_, other_nsec3.impl_->next_); - if (cmp != 0) { - return (cmp); - } - // Note that bitmap doesn't have a dedicated length field, so we shouldn't - // terminate the comparison just because the lengths are different. - return (compareVectors(impl_->typebits_, other_nsec3.impl_->typebits_, - false)); -} - -uint8_t -NSEC3::getHashalg() const { - return (impl_->hashalg_); -} - -uint8_t -NSEC3::getFlags() const { - return (impl_->flags_); -} - -uint16_t -NSEC3::getIterations() const { - return (impl_->iterations_); -} - -const vector<uint8_t>& -NSEC3::getSalt() const { - return (impl_->salt_); -} - -const vector<uint8_t>& -NSEC3::getNext() const { - return (impl_->next_); -} - -// END_RDATA_NAMESPACE -// END_ISC_NAMESPACE |