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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 <string>
#include <map>
#include <set>
#include "iputils.hh"
class SvcParam {
public:
enum SvcParamKey: uint16_t {
// TODO link to IANA registry
/* When adding new values, you *must* update SvcParam::SvcParam(const std::string &key, const std::string &value)
* in svc-record.cc with the new numbers
*/
mandatory = 0,
alpn = 1,
no_default_alpn = 2,
port = 3,
ipv4hint = 4,
ech = 5,
ipv6hint = 6
};
//! empty Param, unusable
SvcParam() = delete;
//! To create a value-less SvcParam (like no-default-alpn)
SvcParam(const SvcParamKey &key);
//! To create a "generic" SvcParam (for keyNNNNN and ech)
SvcParam(const SvcParamKey &key, const std::string &value);
//! To create a multi-value SvcParam (like mandatory)
SvcParam(const SvcParamKey &key, std::set<std::string> &&value);
//! To create a multi-value SvcParam (like alpn)
SvcParam(const SvcParamKey &key, std::vector<std::string> &&value);
//! To create a multi-value SvcParam with key values (like mandatory)
SvcParam(const SvcParamKey &key, std::set<SvcParamKey> &&value);
//! To create and ipv{4,6}hists SvcParam
SvcParam(const SvcParamKey &key, std::vector<ComboAddress> &&value);
//! To create a port SvcParam
SvcParam(const SvcParamKey &key, const uint16_t value);
//! Returns the SvcParamKey based on the input
static SvcParamKey keyFromString(const std::string &k);
//! Returns the SvcParamKey based on the input, generic is true when the format was 'keyNNNN'
static SvcParamKey keyFromString(const std::string &k, bool &generic);
//! Returns the string value of the SvcParamKey
static std::string keyToString(const SvcParamKey &k);
bool operator< (const SvcParam &other) const;
SvcParamKey getKey() const {
return d_key;
}
uint16_t getPort() const;
const std::vector<ComboAddress>& getIPHints() const;
const std::vector<std::string>& getALPN() const;
const std::set<SvcParamKey>& getMandatory() const;
const std::string& getECH() const;
const std::string& getValue() const;
bool getAutoHint() const { return d_autohint; };
void setAutoHint(const bool value) { d_autohint = value; };
private:
SvcParamKey d_key;
std::string d_value; // For keyNNNNN vals
std::vector<std::string> d_alpn; // For ALPN
std::set<SvcParamKey> d_mandatory; // For mandatory
std::vector<ComboAddress> d_ipHints; // For ipv{6,4}hints
std::string d_ech; // For Encrypted Client Hello
uint16_t d_port{0}; // For port
// Set to true if we encountered an "auto" field in hints
// Can only be true when we read SVCParams from text
bool d_autohint{false};
static const std::map<std::string, SvcParamKey> SvcParams;
};
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