1 files changed, 109 insertions, 0 deletions
diff --git a/dnsdist-lua.hh b/dnsdist-lua.hh
new file mode 100644
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--- /dev/null
+++ b/dnsdist-lua.hh
@@ -0,0 +1,109 @@
+/*
+ * 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 <random>
+
+struct ResponseConfig
+{
+  boost::optional<bool> setAA{boost::none};
+  boost::optional<bool> setAD{boost::none};
+  boost::optional<bool> setRA{boost::none};
+  uint32_t ttl{60};
+};
+void setResponseHeadersFromConfig(dnsheader& dh, const ResponseConfig& config);
+
+class SpoofAction : public DNSAction
+{
+public:
+  SpoofAction(const vector<ComboAddress>& addrs): d_addrs(addrs)
+  {
+    for (const auto& addr : d_addrs) {
+      if (addr.isIPv4()) {
+        d_types.insert(QType::A);
+      }
+      else if (addr.isIPv6()) {
+        d_types.insert(QType::AAAA);
+      }
+    }
+
+    if (!d_addrs.empty()) {
+      d_types.insert(QType::ANY);
+    }
+  }
+
+  SpoofAction(const DNSName& cname): d_cname(cname)
+  {
+  }
+
+  SpoofAction(const vector<std::string>& raws): d_rawResponses(raws)
+  {
+  }
+
+  DNSAction::Action operator()(DNSQuestion* dq, string* ruleresult) const override;
+
+  string toString() const override
+  {
+    string ret = "spoof in ";
+    if (!d_cname.empty()) {
+      ret += d_cname.toString() + " ";
+    }
+    if (d_rawResponses.size() > 0) {
+      ret += "raw bytes ";
+    }
+    else {
+      for(const auto& a : d_addrs)
+        ret += a.toString()+" ";
+    }
+    return ret;
+  }
+
+
+  ResponseConfig d_responseConfig;
+private:
+  static thread_local std::default_random_engine t_randomEngine;
+  std::vector<ComboAddress> d_addrs;
+  std::set<uint16_t> d_types;
+  std::vector<std::string> d_rawResponses;
+  DNSName d_cname;
+};
+
+typedef boost::variant<string, vector<pair<int, string>>, std::shared_ptr<DNSRule>, DNSName, vector<pair<int, DNSName> > > luadnsrule_t;
+std::shared_ptr<DNSRule> makeRule(const luadnsrule_t& var);
+typedef std::unordered_map<std::string, boost::variant<std::string> > luaruleparams_t;
+void parseRuleParams(boost::optional<luaruleparams_t> params, boost::uuids::uuid& uuid, std::string& name, uint64_t& creationOrder);
+
+typedef NetmaskTree<DynBlock, AddressAndPortRange> nmts_t;
+
+vector<std::function<void(void)>> setupLua(LuaContext& luaCtx, bool client, bool configCheck, const std::string& config);
+void setupLuaActions(LuaContext& luaCtx);
+void setupLuaBindings(LuaContext& luaCtx, bool client);
+void setupLuaBindingsDNSCrypt(LuaContext& luaCtx);
+void setupLuaBindingsDNSQuestion(LuaContext& luaCtx);
+void setupLuaBindingsKVS(LuaContext& luaCtx, bool client);
+void setupLuaBindingsPacketCache(LuaContext& luaCtx, bool client);
+void setupLuaBindingsProtoBuf(LuaContext& luaCtx, bool client, bool configCheck);
+void setupLuaRules(LuaContext& luaCtx);
+void setupLuaInspection(LuaContext& luaCtx);
+void setupLuaVars(LuaContext& luaCtx);
+void setupLuaWeb(LuaContext& luaCtx);
+void setupLuaLoadBalancingContext(LuaContext& luaCtx);