1 files changed, 81 insertions, 0 deletions
diff --git a/src/lib/dns/question.cc b/src/lib/dns/question.cc
new file mode 100644
index 0000000..f0170d8
--- /dev/null
+++ b/src/lib/dns/question.cc
@@ -0,0 +1,81 @@
+// 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 <iostream>
+#include <string>
+
+#include <util/buffer.h>
+#include <dns/messagerenderer.h>
+#include <dns/name.h>
+#include <dns/question.h>
+#include <dns/rrclass.h>
+#include <dns/rrtype.h>
+
+using namespace std;
+using namespace isc::util;
+
+namespace isc {
+namespace dns {
+Question::Question(InputBuffer& buffer) :
+    name_(buffer), rrtype_(0), rrclass_(0)
+{
+    // In theory, we could perform this in the member initialization list,
+    // and it would be a little bit more efficient.  We don't do this, however,
+    // because the initialization ordering is crucial (type must be first)
+    // and the ordering in the initialization list depends on the appearance
+    // order of member variables.  It's fragile to rely on such an implicit
+    // dependency, so we make the initialization order explicit.
+    rrtype_ = RRType(buffer);
+    rrclass_ = RRClass(buffer);
+}
+
+std::string
+Question::toText(bool newline) const {
+    std::string r(name_.toText() + " " + rrclass_.toText() + " " +
+                  rrtype_.toText());
+    if (newline) {
+        r.append("\n");
+    }
+
+    return (r);
+}
+
+unsigned int
+Question::toWire(OutputBuffer& buffer) const {
+    name_.toWire(buffer);
+    rrtype_.toWire(buffer);
+    rrclass_.toWire(buffer);    // number of "entries", which is always 1
+
+    return (1);
+}
+
+unsigned int
+Question::toWire(AbstractMessageRenderer& renderer) const {
+    const size_t pos0 = renderer.getLength();
+
+    renderer.writeName(name_);
+    rrtype_.toWire(renderer);
+    rrclass_.toWire(renderer);
+
+    // Make sure the renderer has a room for the question
+    if (renderer.getLength() > renderer.getLengthLimit()) {
+        renderer.trim(renderer.getLength() - pos0);
+        renderer.setTruncated();
+        return (0);
+    }
+
+    return (1);                 // number of "entries"
+}
+
+ostream&
+operator<<(std::ostream& os, const Question& question) {
+    os << question.toText();
+    return (os);
+}
+}
+}