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- // Copyright 2020 The Chromium Authors. All rights reserved.
- // Use of this source code is governed by a BSD-style license that can be
- // found in the LICENSE file.
- #ifndef NET_DNS_HTTPS_RECORD_RDATA_H_
- #define NET_DNS_HTTPS_RECORD_RDATA_H_
- #include <stdint.h>
- #include <map>
- #include <memory>
- #include <set>
- #include <string>
- #include <vector>
- #include "base/strings/string_piece.h"
- #include "net/base/ip_address.h"
- #include "net/base/net_export.h"
- #include "net/dns/public/dns_protocol.h"
- #include "net/dns/record_rdata.h"
- #include "third_party/abseil-cpp/absl/types/optional.h"
- namespace net {
- using HttpsRecordPriority = uint16_t;
- class AliasFormHttpsRecordRdata;
- class ServiceFormHttpsRecordRdata;
- class NET_EXPORT_PRIVATE HttpsRecordRdata : public RecordRdata {
- public:
- static const uint16_t kType = dns_protocol::kTypeHttps;
- // Returns `nullptr` on malformed input.
- static std::unique_ptr<HttpsRecordRdata> Parse(base::StringPiece data);
- HttpsRecordRdata(const HttpsRecordRdata& rdata) = delete;
- HttpsRecordRdata& operator=(const HttpsRecordRdata& rdata) = delete;
- ~HttpsRecordRdata() override;
- bool IsEqual(const RecordRdata* other) const override;
- virtual bool IsEqual(const HttpsRecordRdata* other) const = 0;
- uint16_t Type() const override;
- virtual bool IsAlias() const = 0;
- AliasFormHttpsRecordRdata* AsAliasForm();
- const AliasFormHttpsRecordRdata* AsAliasForm() const;
- ServiceFormHttpsRecordRdata* AsServiceForm();
- const ServiceFormHttpsRecordRdata* AsServiceForm() const;
- protected:
- HttpsRecordRdata() = default;
- };
- class NET_EXPORT_PRIVATE AliasFormHttpsRecordRdata : public HttpsRecordRdata {
- public:
- explicit AliasFormHttpsRecordRdata(std::string alias_name);
- static std::unique_ptr<AliasFormHttpsRecordRdata> Parse(
- base::StringPiece data);
- bool IsEqual(const HttpsRecordRdata* other) const override;
- bool IsAlias() const override;
- base::StringPiece alias_name() const { return alias_name_; }
- private:
- AliasFormHttpsRecordRdata() = default;
- const std::string alias_name_;
- };
- class NET_EXPORT_PRIVATE ServiceFormHttpsRecordRdata : public HttpsRecordRdata {
- public:
- static constexpr uint16_t kSupportedKeys[] = {
- dns_protocol::kHttpsServiceParamKeyMandatory,
- dns_protocol::kHttpsServiceParamKeyAlpn,
- dns_protocol::kHttpsServiceParamKeyNoDefaultAlpn,
- dns_protocol::kHttpsServiceParamKeyPort,
- dns_protocol::kHttpsServiceParamKeyIpv4Hint,
- dns_protocol::kHttpsServiceParamKeyEchConfig,
- dns_protocol::kHttpsServiceParamKeyIpv6Hint};
- ServiceFormHttpsRecordRdata(uint16_t priority,
- std::string service_name,
- std::set<uint16_t> mandatory_keys,
- std::vector<std::string> alpn_ids,
- bool default_alpn,
- absl::optional<uint16_t> port,
- std::vector<IPAddress> ipv4_hint,
- std::string ech_config,
- std::vector<IPAddress> ipv6_hint,
- std::map<uint16_t, std::string> unparsed_params);
- static std::unique_ptr<ServiceFormHttpsRecordRdata> Parse(
- base::StringPiece data);
- ~ServiceFormHttpsRecordRdata() override;
- bool IsEqual(const HttpsRecordRdata* other) const override;
- bool IsAlias() const override;
- HttpsRecordPriority priority() const { return priority_; }
- base::StringPiece service_name() const { return service_name_; }
- const std::set<uint16_t>& mandatory_keys() const { return mandatory_keys_; }
- const std::vector<std::string>& alpn_ids() const { return alpn_ids_; }
- bool default_alpn() const { return default_alpn_; }
- absl::optional<uint16_t> port() const { return port_; }
- const std::vector<IPAddress>& ipv4_hint() const { return ipv4_hint_; }
- base::StringPiece ech_config() const { return ech_config_; }
- const std::vector<IPAddress>& ipv6_hint() const { return ipv6_hint_; }
- const std::map<uint16_t, std::string>& unparsed_params() const {
- return unparsed_params_;
- }
- // Returns whether or not this rdata parser is considered "compatible" with
- // the parsed rdata. That is that all keys listed by mandatory_keys() (and all
- // keys considered default mandatory for HTTPS records) are parsable by this
- // parser.
- bool IsCompatible() const;
- private:
- static bool IsSupportedKey(uint16_t key);
- const HttpsRecordPriority priority_;
- const std::string service_name_;
- // Supported service parameters.
- const std::set<uint16_t> mandatory_keys_;
- const std::vector<std::string> alpn_ids_;
- const bool default_alpn_;
- const absl::optional<uint16_t> port_;
- const std::vector<IPAddress> ipv4_hint_;
- const std::string ech_config_;
- const std::vector<IPAddress> ipv6_hint_;
- const std::map<uint16_t, std::string> unparsed_params_;
- };
- } // namespace net
- #endif // NET_DNS_HTTPS_RECORD_RDATA_H_
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