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// Copyright 2021 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef CONTENT_BROWSER_BUCKETS_BUCKET_HOST_H_
#define CONTENT_BROWSER_BUCKETS_BUCKET_HOST_H_
#include "base/memory/raw_ptr.h"
#include "base/memory/weak_ptr.h"
#include "base/sequence_checker.h"
#include "components/services/storage/public/cpp/buckets/bucket_info.h"
#include "components/services/storage/public/cpp/quota_error_or.h"
#include "mojo/public/cpp/bindings/pending_remote.h"
#include "mojo/public/cpp/bindings/receiver_set.h"
#include "third_party/blink/public/mojom/buckets/bucket_manager_host.mojom.h"
#include "third_party/blink/public/mojom/quota/quota_types.mojom.h"
namespace storage {
class QuotaManagerProxy;
} // namespace storage
namespace content {
class BucketContext;
class BucketManagerHost;
// Implements a Storage Bucket object in the browser process.
//
// `BucketManagerHost` owns all `BucketHost` instances for an origin.
// A new instance is created for every request to open or create a
// StorageBucket. Instances are destroyed when all corresponding mojo
// connections are closed or when the owning `BucketManager` is destroyed.
class BucketHost : public blink::mojom::BucketHost {
public:
BucketHost(BucketManagerHost* bucket_manager_host,
const storage::BucketInfo& bucket_info);
~BucketHost() override;
BucketHost(const BucketHost&) = delete;
BucketHost& operator=(const BucketHost&) = delete;
// Create mojo data pipe and return remote to pass to the renderer
// for the StorageBucket object.
mojo::PendingRemote<blink::mojom::BucketHost> CreateStorageBucketBinding(
base::WeakPtr<BucketContext> context);
// Pass a mojo data pipe sent from the renderer for the StorageBucket object.
void PassStorageBucketBinding(
base::WeakPtr<BucketContext> bucket_context,
mojo::PendingReceiver<blink::mojom::BucketHost> receiver);
// blink::mojom::BucketHost
void Persist(PersistCallback callback) override;
void Persisted(PersistedCallback callback) override;
void Estimate(EstimateCallback callback) override;
void Durability(DurabilityCallback callback) override;
void SetExpires(base::Time expires, SetExpiresCallback callback) override;
void Expires(ExpiresCallback callback) override;
void GetIdbFactory(
mojo::PendingReceiver<blink::mojom::IDBFactory> receiver) override;
void GetLockManager(
mojo::PendingReceiver<blink::mojom::LockManager> receiver) override;
void GetCaches(
mojo::PendingReceiver<blink::mojom::CacheStorage> caches) override;
void GetDirectory(GetDirectoryCallback callback) override;
void GetDirectoryForDevtools(
const std::vector<std::string>& directory_path_components,
GetDirectoryCallback callback) override;
const storage::BucketId bucket_id() { return bucket_id_; }
private:
void OnReceiverDisconnected();
storage::QuotaManagerProxy* GetQuotaManagerProxy();
void DidGetBucket(base::OnceCallback<void(bool)> callback,
storage::QuotaErrorOr<storage::BucketInfo> bucket_info);
void DidGetUsageAndQuota(EstimateCallback callback,
blink::mojom::QuotaStatusCode code,
int64_t usage,
int64_t quota);
// These are used as callbacks to `GetBucketById` to validate that the bucket
// is still active.
void DidValidateForPersist(PersistCallback callback, bool bucket_exists);
void DidValidateForDurability(DurabilityCallback callback,
bool bucket_exists);
void DidValidateForExpires(ExpiresCallback callback, bool bucket_exists);
SEQUENCE_CHECKER(sequence_checker_);
// Raw pointer use is safe here because BucketManagerHost owns this
// BucketHost.
raw_ptr<BucketManagerHost> bucket_manager_host_;
// Holds the latest snapshot from the database. This can be an empty object if
// the bucket's been deleted.
storage::BucketInfo bucket_info_;
// This is the bucket ID, but will survive past bucket deletion for record
// keeping purposes.
const storage::BucketId bucket_id_;
mojo::ReceiverSet<blink::mojom::BucketHost, base::WeakPtr<BucketContext>>
receivers_;
base::WeakPtrFactory<BucketHost> weak_factory_{this};
};
} // namespace content
#endif // CONTENT_BROWSER_BUCKETS_BUCKET_HOST_H_
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