/src/pdns/pdns/dnsdistdist/dnsdist-actions.hh

Source (jump to first uncovered line)
/*
 * 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 <cstdint>
#include <map>
#include <string>

/* so what could you do:
   drop,
   fake up nxdomain,
   provide actual answer,
   allow & and stop processing,
   continue processing,
   modify header:    (servfail|refused|notimp), set TC=1,
   send to pool */

struct DNSQuestion;
struct DNSResponse;

class DNSAction
{
public:
  enum class Action : uint8_t
  {
    Drop,
    Nxdomain,
    Refused,
    Spoof,
    Allow,
    HeaderModify,
    Pool,
    Delay,
    Truncate,
    ServFail,
    None,
    NoOp,
    NoRecurse,
    SpoofRaw,
    SpoofPacket,
    SetTag,
  };
  static Action typeFromString(const std::string& str);
  static std::string typeToString(Action action);

  virtual Action operator()(DNSQuestion*, std::string* ruleresult) const = 0;
  virtual ~DNSAction() = default;
  virtual std::string toString() const = 0;
  virtual std::map<std::string, double> getStats() const
  {
    return {{}};
  }
  virtual void reload()
  {
  }
};

class DNSResponseAction
{
public:
  enum class Action : uint8_t
  {
    Allow,
    Delay,
    Drop,
    HeaderModify,
    ServFail,
    Truncate,
    None
  };
  virtual Action operator()(DNSResponse*, std::string* ruleresult) const = 0;
  virtual ~DNSResponseAction() = default;
  virtual std::string toString() const = 0;
  virtual void reload()
  {
  }
};

Coverage Report

Created: 2025-07-04 06:59

Line	Count	Source (jump to first uncovered line)
1		/*
2		* This file is part of PowerDNS or dnsdist.
3		* Copyright -- PowerDNS.COM B.V. and its contributors
4		*
5		* This program is free software; you can redistribute it and/or modify
6		* it under the terms of version 2 of the GNU General Public License as
7		* published by the Free Software Foundation.
8		*
9		* In addition, for the avoidance of any doubt, permission is granted to
10		* link this program with OpenSSL and to (re)distribute the binaries
11		* produced as the result of such linking.
12		*
13		* This program is distributed in the hope that it will be useful,
14		* but WITHOUT ANY WARRANTY; without even the implied warranty of
15		* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16		* GNU General Public License for more details.
17		*
18		* You should have received a copy of the GNU General Public License
19		* along with this program; if not, write to the Free Software
20		* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
21		*/
22		#pragma once
23
24		#include <cstdint>
25		#include <map>
26		#include <string>
27
28		/* so what could you do:
29		drop,
30		fake up nxdomain,
31		provide actual answer,
32		allow & and stop processing,
33		continue processing,
34		modify header: (servfail\|refused\|notimp), set TC=1,
35		send to pool */
36
37		struct DNSQuestion;
38		struct DNSResponse;
39
40		class DNSAction
41		{
42		public:
43		enum class Action : uint8_t
44		{
45		Drop,
46		Nxdomain,
47		Refused,
48		Spoof,
49		Allow,
50		HeaderModify,
51		Pool,
52		Delay,
53		Truncate,
54		ServFail,
55		None,
56		NoOp,
57		NoRecurse,
58		SpoofRaw,
59		SpoofPacket,
60		SetTag,
61		};
62		static Action typeFromString(const std::string& str);
63		static std::string typeToString(Action action);
64
65		virtual Action operator()(DNSQuestion, std::string ruleresult) const = 0;
66		virtual ~DNSAction() = default;
67		virtual std::string toString() const = 0;
68		virtual std::map<std::string, double> getStats() const
69	0	{
70	0	return {{}};
71	0	}
72		virtual void reload()
73	0	{
74	0	}
75		};
76
77		class DNSResponseAction
78		{
79		public:
80		enum class Action : uint8_t
81		{
82		Allow,
83		Delay,
84		Drop,
85		HeaderModify,
86		ServFail,
87		Truncate,
88		None
89		};
90		virtual Action operator()(DNSResponse, std::string ruleresult) const = 0;
91		virtual ~DNSResponseAction() = default;
92		virtual std::string toString() const = 0;
93		virtual void reload()
94	0	{
95	0	}
96		};