1 files changed, 110 insertions, 0 deletions
diff --git a/dnsdist-lua-ffi.hh b/dnsdist-lua-ffi.hh
new file mode 100644
index 0000000..1030659
--- /dev/null
+++ b/dnsdist-lua-ffi.hh
@@ -0,0 +1,110 @@
+/*
+ * 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.
+ */
+#pragma once
+
+#include "dnsdist.hh"
+
+extern "C" {
+#include "dnsdist-lua-ffi-interface.h"
+}
+
+// dnsdist_ffi_dnsquestion_t is a lightuserdata
+template<>
+struct LuaContext::Pusher<dnsdist_ffi_dnsquestion_t*> {
+    static const int minSize = 1;
+    static const int maxSize = 1;
+
+    static PushedObject push(lua_State* state, dnsdist_ffi_dnsquestion_t* ptr) noexcept {
+        lua_pushlightuserdata(state, ptr);
+        return PushedObject{state, 1};
+    }
+};
+
+struct dnsdist_ffi_dnsquestion_t
+{
+  dnsdist_ffi_dnsquestion_t(DNSQuestion* dq_): dq(dq_)
+  {
+  }
+
+  DNSQuestion* dq{nullptr};
+  std::vector<dnsdist_ffi_ednsoption_t> ednsOptionsVect;
+  std::vector<dnsdist_ffi_http_header_t> httpHeadersVect;
+  std::vector<dnsdist_ffi_tag_t> tagsVect;
+  std::unordered_map<std::string, std::string> httpHeaders;
+  std::string trailingData;
+  ComboAddress maskedRemote;
+  boost::optional<std::string> result{boost::none};
+  boost::optional<std::string> httpPath{boost::none};
+  boost::optional<std::string> httpQueryString{boost::none};
+  boost::optional<std::string> httpHost{boost::none};
+  boost::optional<std::string> httpScheme{boost::none};
+};
+
+// dnsdist_ffi_server_t is a lightuserdata
+template<>
+struct LuaContext::Pusher<dnsdist_ffi_server_t*> {
+    static const int minSize = 1;
+    static const int maxSize = 1;
+
+    static PushedObject push(lua_State* state, dnsdist_ffi_server_t* ptr) noexcept {
+        lua_pushlightuserdata(state, ptr);
+        return PushedObject{state, 1};
+    }
+};
+
+struct dnsdist_ffi_server_t
+{
+  dnsdist_ffi_server_t(const std::shared_ptr<DownstreamState>& server_): server(server_)
+  {
+  }
+
+  const std::shared_ptr<DownstreamState>& server;
+};
+
+// dnsdist_ffi_servers_list_t is a lightuserdata
+template<>
+struct LuaContext::Pusher<dnsdist_ffi_servers_list_t*> {
+    static const int minSize = 1;
+    static const int maxSize = 1;
+
+    static PushedObject push(lua_State* state, dnsdist_ffi_servers_list_t* ptr) noexcept {
+        lua_pushlightuserdata(state, ptr);
+        return PushedObject{state, 1};
+    }
+};
+
+struct dnsdist_ffi_servers_list_t
+{
+  dnsdist_ffi_servers_list_t(const ServerPolicy::NumberedServerVector& servers_): servers(servers_)
+  {
+    ffiServers.reserve(servers.size());
+    for (const auto& server: servers) {
+      ffiServers.push_back(dnsdist_ffi_server_t(server.second));
+    }
+  }
+
+  std::vector<dnsdist_ffi_server_t> ffiServers;
+  const ServerPolicy::NumberedServerVector& servers;
+};
+
+const std::string& getLuaFFIWrappers();
+void setupLuaFFIPerThreadContext(LuaContext& luaCtx);