From bc282425088455198a7a99511c75914477d4ed32 Mon Sep 17 00:00:00 2001
From: Daniel Baumann <daniel.baumann@progress-linux.org>
Date: Sat, 13 Apr 2024 23:14:51 +0200
Subject: Merging upstream version 1.9.3.

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
---
 fuzz_xsk.cc | 58 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 58 insertions(+)
 create mode 100644 fuzz_xsk.cc

(limited to 'fuzz_xsk.cc')

diff --git a/fuzz_xsk.cc b/fuzz_xsk.cc
new file mode 100644
index 0000000..7066edc
--- /dev/null
+++ b/fuzz_xsk.cc
@@ -0,0 +1,58 @@
+/*
+ * This file is part of PowerDNS or dnsdist.
+ * Copyright -- PowerDNS.COM B.V. and its contributors
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of version 2 of the GNU General Public License as
+ * published by the Free Software Foundation.
+ *
+ * In addition, for the avoidance of any doubt, permission is granted to
+ * link this program with OpenSSL and to (re)distribute the binaries
+ * produced as the result of such linking.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+ */
+
+#include "xsk.hh"
+
+extern "C" int LLVMFuzzerTestOneInput(const uint8_t* data, size_t size);
+
+extern "C" int LLVMFuzzerTestOneInput(const uint8_t* data, size_t size)
+{
+#ifdef HAVE_XSK
+  if (size > XskSocket::getFrameSize()) {
+    return 0;
+  }
+
+  try {
+    // NOLINTNEXTLINE(cppcoreguidelines-pro-type-const-cast): packet data is usually mutable
+    XskPacket packet(const_cast<uint8_t*>(data), size, size);
+    if (packet.parse(false)) {
+      const auto& dest = packet.getToAddr();
+      const auto& orig = packet.getFromAddr();
+      const auto* payload = packet.getPayloadData();
+      auto capacity = packet.getCapacity();
+      auto length = packet.getDataLen();
+      auto frameLen = packet.getFrameLen();
+      auto header = packet.cloneHeaderToPacketBuffer();
+      auto buffer = packet.clonePacketBuffer();
+      (void)dest;
+      (void)orig;
+      (void)payload;
+      (void)capacity;
+      (void)length;
+      (void)frameLen;
+    }
+  }
+  catch (const std::exception& e) {
+  }
+#endif /* HAVE_XSK */
+  return 0;
+}
-- 
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