1 files changed, 232 insertions, 0 deletions
diff --git a/src/lib/dns/rdata/generic/nsec3param_51.cc b/src/lib/dns/rdata/generic/nsec3param_51.cc
new file mode 100644
index 0000000..2d28a69
--- /dev/null
+++ b/src/lib/dns/rdata/generic/nsec3param_51.cc
@@ -0,0 +1,232 @@
+// Copyright (C) 2010-2016 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 <util/buffer.h>
+#include <util/encode/hex.h>
+
+#include <dns/messagerenderer.h>
+#include <dns/rdata.h>
+#include <dns/rdataclass.h>
+#include <dns/rdata/generic/detail/nsec3param_common.h>
+
+#include <boost/lexical_cast.hpp>
+
+#include <memory>
+#include <string>
+#include <sstream>
+#include <vector>
+
+using namespace std;
+using namespace isc::util;
+using namespace isc::util::encode;
+
+// BEGIN_ISC_NAMESPACE
+// BEGIN_RDATA_NAMESPACE
+
+struct NSEC3PARAMImpl {
+    // straightforward representation of NSEC3PARAM RDATA fields
+    NSEC3PARAMImpl(uint8_t hashalg, uint8_t flags, uint16_t iterations,
+                   const vector<uint8_t>& salt) :
+        hashalg_(hashalg), flags_(flags), iterations_(iterations), salt_(salt)
+    {}
+
+    const uint8_t hashalg_;
+    const uint8_t flags_;
+    const uint16_t iterations_;
+    const vector<uint8_t> salt_;
+};
+
+/// \brief Constructor from string.
+///
+/// The given string must represent a valid NSEC3PARAM 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.
+///
+/// \throw InvalidRdataText if any fields are out of their valid range,
+/// or are incorrect.
+///
+/// \param nsec3param_str A string containing the RDATA to be created
+NSEC3PARAM::NSEC3PARAM(const std::string& nsec3param_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 NSEC3PARAMImpl that constructFromLexer() returns.
+    std::unique_ptr<NSEC3PARAMImpl> impl_ptr;
+
+    try {
+        std::istringstream ss(nsec3param_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 NSEC3PARAM: " << nsec3param_str);
+        }
+    } catch (const MasterLexer::LexerError& ex) {
+        isc_throw(InvalidRdataText,
+                  "Failed to construct NSEC3PARAM from '" << nsec3param_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 NSEC3PARAM RDATA.
+///
+/// See \c NSEC3PARAM::NSEC3PARAM(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
+NSEC3PARAM::NSEC3PARAM(MasterLexer& lexer, const Name*, MasterLoader::Options,
+                       MasterLoaderCallbacks&) :
+    impl_(NULL)
+{
+    impl_ = constructFromLexer(lexer);
+}
+
+NSEC3PARAMImpl*
+NSEC3PARAM::constructFromLexer(MasterLexer& lexer) {
+    vector<uint8_t> salt;
+    const ParseNSEC3ParamResult params =
+        parseNSEC3ParamFromLexer("NSEC3PARAM", lexer, salt);
+
+    return (new NSEC3PARAMImpl(params.algorithm, params.flags,
+                               params.iterations, salt));
+}
+
+NSEC3PARAM::NSEC3PARAM(InputBuffer& buffer, size_t rdata_len) :
+    impl_(NULL)
+{
+    vector<uint8_t> salt;
+    const ParseNSEC3ParamResult params =
+        parseNSEC3ParamWire("NSEC3PARAM", buffer, rdata_len, salt);
+
+    impl_ = new NSEC3PARAMImpl(params.algorithm, params.flags,
+                               params.iterations, salt);
+}
+
+NSEC3PARAM::NSEC3PARAM(const NSEC3PARAM& source) :
+    Rdata(), impl_(new NSEC3PARAMImpl(*source.impl_))
+{}
+
+NSEC3PARAM&
+NSEC3PARAM::operator=(const NSEC3PARAM& source) {
+    if (this == &source) {
+        return (*this);
+    }
+
+    NSEC3PARAMImpl* newimpl = new NSEC3PARAMImpl(*source.impl_);
+    delete impl_;
+    impl_ = newimpl;
+
+    return (*this);
+}
+
+NSEC3PARAM::~NSEC3PARAM() {
+    delete impl_;
+}
+
+string
+NSEC3PARAM::toText() const {
+    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_)));
+}
+
+template <typename OUTPUT_TYPE>
+void
+toWireHelper(const NSEC3PARAMImpl& 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());
+    }
+}
+
+void
+NSEC3PARAM::toWire(OutputBuffer& buffer) const {
+    toWireHelper(*impl_, buffer);
+}
+
+void
+NSEC3PARAM::toWire(AbstractMessageRenderer& renderer) const {
+    toWireHelper(*impl_, renderer);
+}
+
+int
+NSEC3PARAM::compare(const Rdata& other) const {
+    const NSEC3PARAM& other_param = dynamic_cast<const NSEC3PARAM&>(other);
+
+    if (impl_->hashalg_ != other_param.impl_->hashalg_) {
+        return (impl_->hashalg_ < other_param.impl_->hashalg_ ? -1 : 1);
+    }
+    if (impl_->flags_ != other_param.impl_->flags_) {
+        return (impl_->flags_ < other_param.impl_->flags_ ? -1 : 1);
+    }
+    if (impl_->iterations_ != other_param.impl_->iterations_) {
+        return (impl_->iterations_ < other_param.impl_->iterations_ ? -1 : 1);
+    }
+
+    const size_t this_len = impl_->salt_.size();
+    const size_t other_len = other_param.impl_->salt_.size();
+    if (this_len != other_len) {
+        return (this_len - other_len);
+    }
+    const size_t cmplen = min(this_len, other_len);
+    const int cmp = (cmplen == 0) ? 0 :
+        memcmp(&impl_->salt_.at(0), &other_param.impl_->salt_.at(0), cmplen);
+    if (cmp != 0) {
+        return (cmp);
+    } else {
+        return (this_len - other_len);
+    }
+}
+
+uint8_t
+NSEC3PARAM::getHashalg() const {
+    return (impl_->hashalg_);
+}
+
+uint8_t
+NSEC3PARAM::getFlags() const {
+    return (impl_->flags_);
+}
+
+uint16_t
+NSEC3PARAM::getIterations() const {
+    return (impl_->iterations_);
+}
+
+const vector<uint8_t>&
+NSEC3PARAM::getSalt() const {
+    return (impl_->salt_);
+}
+
+// END_RDATA_NAMESPACE
+// END_ISC_NAMESPACE