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/*
* 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& dnsquestion);
DNSDistProtoBufMessage(const DNSResponse& dnsresponse, bool includeCNAME);
DNSDistProtoBufMessage(const DNSQuestion&&) = delete;
DNSDistProtoBufMessage(const DNSResponse&&, bool) = delete;
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 setHTTPVersion(pdns::ProtoZero::Message::HTTPVersion version);
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& netmask);
void addTag(const std::string& strValue);
void addMeta(const std::string& key, std::vector<std::string>&& strValues, const std::vector<int64_t>& intValues);
void addRR(DNSName&& qname, uint16_t uType, uint16_t uClass, uint32_t uTTL, const std::string& data);
void serialize(std::string& data) const;
[[nodiscard]] 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(DNSName name, uint16_t type, uint16_t class_) :
d_name(std::move(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;
struct MetaValue
{
std::unordered_set<std::string> d_strings;
std::unordered_set<int64_t> d_integers;
};
std::unordered_map<std::string, MetaValue> d_metaTags;
// NOLINTNEXTLINE(cppcoreguidelines-avoid-const-or-ref-data-members)
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
{
// NOLINTNEXTLINE(cppcoreguidelines-avoid-const-or-ref-data-members)
const std::string d_name;
// NOLINTNEXTLINE(cppcoreguidelines-avoid-const-or-ref-data-members)
const Type d_type;
// NOLINTNEXTLINE(cppcoreguidelines-avoid-const-or-ref-data-members)
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
{
};
using TypeContainer = 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>>>>;
static const TypeContainer s_types;
public:
ProtoBufMetaKey(const std::string& key);
[[nodiscard]] const std::string& getName() const;
[[nodiscard]] std::vector<std::string> getValues(const DNSQuestion& dnsquestion) const;
private:
std::string d_subKey;
uint8_t d_numericSubKey{0};
Type d_type;
};
#endif /* DISABLE_PROTOBUF */
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