| // 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 CONTENT_BROWSER_NATIVE_IO_NATIVE_IO_CONTEXT_H_ |
| #define CONTENT_BROWSER_NATIVE_IO_NATIVE_IO_CONTEXT_H_ |
| |
| #include <map> |
| #include <memory> |
| |
| #include "base/files/file_path.h" |
| #include "base/sequence_checker.h" |
| #include "content/common/content_export.h" |
| #include "mojo/public/cpp/bindings/pending_receiver.h" |
| #include "third_party/blink/public/mojom/native_io/native_io.mojom-forward.h" |
| #include "url/origin.h" |
| |
| namespace content { |
| |
| class NativeIOHost; |
| |
| // Implements the NativeIO Web Platform feature for a StoragePartition. |
| // |
| // Each StoragePartition owns exactly one instance of this class. This class |
| // creates and destroys NativeIOHost instances to meet the demands for NativeIO |
| // from different origins. |
| // |
| // This class is not thread-safe, and all access to an instance must happen on |
| // the same sequence. |
| class CONTENT_EXPORT NativeIOContext { |
| public: |
| // |profile_root| is empty for in-memory (Incognito) profiles. Otherwise, |
| // |profile_root| must point to an existing directory. NativeIO will store its |
| // data in a subdirectory of the profile root. |
| explicit NativeIOContext(const base::FilePath& profile_root); |
| |
| ~NativeIOContext(); |
| |
| NativeIOContext(const NativeIOContext&) = delete; |
| NativeIOContext& operator=(const NativeIOContext&) = delete; |
| |
| // Binds |receiver| to the NativeIOHost serving |origin|. |
| // |
| // |receiver| must belong to a frame or worker serving |origin|. |
| void BindReceiver(const url::Origin& origin, |
| mojo::PendingReceiver<blink::mojom::NativeIOHost> receiver); |
| |
| // Called when a receiver disconnected from a NativeIOHost. |
| // |
| // |host| must be owned by this context. This method should only be called by |
| // NativeIOHost. |
| void OnHostReceiverDisconnect(NativeIOHost* host); |
| |
| private: |
| // Computes the path to the directory storing an origin's NativeIO files. |
| // |
| // Returns an empty path if the origin isn't supported for NativeIO. |
| base::FilePath RootPathForOrigin(const url::Origin& origin); |
| |
| std::map<url::Origin, std::unique_ptr<NativeIOHost>> hosts_; |
| |
| // Points to the root directory for NativeIO files. |
| // |
| // This path is empty for in-memory (Incognito) profiles. |
| const base::FilePath root_path_; |
| |
| SEQUENCE_CHECKER(sequence_checker_); |
| }; |
| |
| } // namespace content |
| |
| #endif // CONTENT_BROWSER_NATIVE_IO_NATIVE_IO_CONTEXT_H_ |