| // Copyright 2017 The Chromium Authors |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #ifndef SERVICES_NETWORK_PUBLIC_CPP_CLIENT_HINTS_H_ |
| #define SERVICES_NETWORK_PUBLIC_CPP_CLIENT_HINTS_H_ |
| |
| #include <stddef.h> |
| #include <string> |
| |
| #include "base/component_export.h" |
| #include "base/containers/flat_map.h" |
| #include "base/time/time.h" |
| #include "services/network/public/mojom/web_client_hints_types.mojom-shared.h" |
| #include "third_party/abseil-cpp/absl/types/optional.h" |
| |
| namespace url { |
| class Origin; |
| } // namespace url |
| |
| namespace network { |
| |
| using ClientHintToNameMap = |
| base::flat_map<network::mojom::WebClientHintsType, std::string>; |
| |
| // Mapping from WebClientHintsType to the hint's name in Accept-CH header. |
| // The ordering matches the ordering of enums in |
| // services/network/public/mojom/web_client_hints_types.mojom |
| COMPONENT_EXPORT(NETWORK_CPP) |
| const ClientHintToNameMap& GetClientHintToNameMap(); |
| |
| // Tries to parse an Accept-CH header. Returns absl::nullopt if parsing |
| // failed and the header should be ignored; otherwise returns a (possibly |
| // empty) list of hints to accept. |
| absl::optional<std::vector<network::mojom::WebClientHintsType>> |
| COMPONENT_EXPORT(NETWORK_CPP) |
| ParseClientHintsHeader(const std::string& header); |
| |
| struct COMPONENT_EXPORT(NETWORK_CPP) ClientHintToDelegatedThirdPartiesHeader { |
| ClientHintToDelegatedThirdPartiesHeader(); |
| ~ClientHintToDelegatedThirdPartiesHeader(); |
| ClientHintToDelegatedThirdPartiesHeader( |
| const ClientHintToDelegatedThirdPartiesHeader&); |
| |
| base::flat_map<network::mojom::WebClientHintsType, std::vector<url::Origin>> |
| map; |
| bool had_invalid_origins{false}; |
| }; |
| |
| enum class MetaCHType { |
| // This syntax can only activate client hints for the first party origin. |
| // <meta http-equiv="accept-ch" content="Sec-CH-DPR"> |
| // Introduced in M69. |
| HttpEquivAcceptCH, |
| // This syntax can activate and delegate client hints to any origin. |
| // <meta http-equiv="delegate-ch" content="Sec-CH-DPR https://foo.com/"> |
| // Introduced in M105. |
| HttpEquivDelegateCH, |
| }; |
| |
| // Tries to parse an Accept-CH header w/ third-party delegation ability (i.e. a |
| // named meta tag). Returns absl::nullopt if parsing failed and the header |
| // should be ignored; otherwise returns a (possibly empty) map of hints to |
| // delegated third-parties. |
| const ClientHintToDelegatedThirdPartiesHeader COMPONENT_EXPORT(NETWORK_CPP) |
| ParseClientHintToDelegatedThirdPartiesHeader(const std::string& header, |
| MetaCHType type); |
| |
| } // namespace network |
| |
| #endif // SERVICES_NETWORK_PUBLIC_CPP_CLIENT_HINTS_H_ |