From 3cd01b932e1c85394272ae64fae67ebeda92fb00 Mon Sep 17 00:00:00 2001
From: Daniel Baumann <daniel.baumann@progress-linux.org>
Date: Sat, 13 Apr 2024 23:11:59 +0200
Subject: Adding upstream version 1.8.3.

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
---
 dnsdist-protobuf.hh | 137 ++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 137 insertions(+)
 create mode 100644 dnsdist-protobuf.hh

(limited to 'dnsdist-protobuf.hh')

diff --git a/dnsdist-protobuf.hh b/dnsdist-protobuf.hh
new file mode 100644
index 0000000..3930538
--- /dev/null
+++ b/dnsdist-protobuf.hh
@@ -0,0 +1,137 @@
+/*
+ * 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"
+#include "dnsname.hh"
+
+#ifndef DISABLE_PROTOBUF
+#include "protozero.hh"
+
+class DNSDistProtoBufMessage
+{
+public:
+  DNSDistProtoBufMessage(const DNSQuestion& dq);
+  DNSDistProtoBufMessage(const DNSResponse& dr, bool includeCNAME);
+
+  void setServerIdentity(const std::string& serverId);
+  void setRequestor(const ComboAddress& requestor);
+  void setResponder(const ComboAddress& responder);
+  void setRequestorPort(uint16_t port);
+  void setResponderPort(uint16_t port);
+  void setResponseCode(uint8_t rcode);
+  void setType(pdns::ProtoZero::Message::MessageType type);
+  void setBytes(size_t bytes);
+  void setTime(time_t sec, uint32_t usec);
+  void setQueryTime(time_t sec, uint32_t usec);
+  void setQuestion(const DNSName& name, uint16_t qtype, uint16_t qclass);
+  void setEDNSSubnet(const Netmask& nm);
+
+  void addTag(const std::string& strValue);
+  void addMeta(const std::string& key, std::vector<std::string>&& values);
+  void addRR(DNSName&& qname, uint16_t uType, uint16_t uClass, uint32_t uTTL, const std::string& data);
+
+  void serialize(std::string& data) const;
+
+  std::string toDebugString() const;
+
+private:
+  struct PBRecord
+  {
+    DNSName d_name;
+    std::string d_data;
+    uint32_t d_ttl;
+    uint16_t d_type;
+    uint16_t d_class;
+  };
+  struct PBQuestion
+  {
+    PBQuestion(const DNSName& name, uint16_t type, uint16_t class_): d_name(name), d_type(type), d_class(class_)
+    {
+    }
+
+    DNSName d_name;
+    uint16_t d_type;
+    uint16_t d_class;
+  };
+
+  std::vector<PBRecord> d_additionalRRs;
+  std::vector<std::string> d_additionalTags;
+  std::unordered_map<std::string, std::unordered_set<std::string>> d_metaTags;
+
+  const DNSQuestion& d_dq;
+  const DNSResponse* d_dr{nullptr};
+  const std::string* d_ServerIdentityRef{nullptr};
+
+  boost::optional<PBQuestion> d_question{boost::none};
+  boost::optional<std::string> d_serverIdentity{boost::none};
+  boost::optional<ComboAddress> d_requestor{boost::none};
+  boost::optional<ComboAddress> d_responder{boost::none};
+  boost::optional<Netmask> d_ednsSubnet{boost::none};
+  boost::optional<std::pair<time_t, uint32_t>> d_time{boost::none};
+  boost::optional<std::pair<time_t, uint32_t>> d_queryTime{boost::none};
+  boost::optional<size_t> d_bytes{boost::none};
+  boost::optional<uint8_t> d_rcode{boost::none};
+
+  pdns::ProtoZero::Message::MessageType d_type{pdns::ProtoZero::Message::MessageType::DNSQueryType};
+  bool d_includeCNAME{false};
+};
+
+class ProtoBufMetaKey
+{
+  enum class Type : uint8_t { SNI, Pool, B64Content, DoHHeader, DoHHost, DoHPath, DoHQueryString, DoHScheme, ProxyProtocolValue, ProxyProtocolValues, Tag, Tags };
+
+  struct KeyTypeDescription
+  {
+    const std::string d_name;
+    const Type d_type;
+    const std::function<std::vector<std::string>(const DNSQuestion&, const std::string&, uint8_t)> d_func;
+    bool d_prefix{false};
+    bool d_caseSensitive{true};
+    bool d_numeric{false};
+  };
+
+  struct NameTag {};
+  struct TypeTag {};
+
+  typedef boost::multi_index_container<
+    KeyTypeDescription,
+    indexed_by <
+      hashed_unique<tag<NameTag>, member<KeyTypeDescription, const std::string, &KeyTypeDescription::d_name>>,
+      hashed_unique<tag<TypeTag>, member<KeyTypeDescription, const Type, &KeyTypeDescription::d_type>>
+    >
+  > TypeContainer;
+
+  static const TypeContainer s_types;
+
+public:
+  ProtoBufMetaKey(const std::string& key);
+
+  const std::string& getName() const;
+  std::vector<std::string> getValues(const DNSQuestion& dq) const;
+private:
+  std::string d_subKey;
+  uint8_t d_numericSubKey{0};
+  Type d_type;
+};
+
+#endif /* DISABLE_PROTOBUF */
-- 
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