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// Copyright 2019 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_FILE_SYSTEM_ACCESS_FILE_SYSTEM_ACCESS_TRANSFER_TOKEN_IMPL_H_
#define CONTENT_BROWSER_FILE_SYSTEM_ACCESS_FILE_SYSTEM_ACCESS_TRANSFER_TOKEN_IMPL_H_
#include "base/memory/raw_ptr.h"
#include "base/thread_annotations.h"
#include "content/browser/file_system_access/file_system_access_manager_impl.h"
#include "content/common/content_export.h"
#include "mojo/public/cpp/bindings/pending_receiver.h"
#include "mojo/public/cpp/bindings/receiver.h"
#include "storage/browser/file_system/file_system_url.h"
#include "storage/browser/file_system/isolated_context.h"
#include "third_party/blink/public/mojom/file_system_access/file_system_access_transfer_token.mojom.h"
namespace content {
// This is the browser side implementation of the FileSystemAccessTransferToken
// mojom interface. These tokens are tied to a particular origin
// and use the permission grants in their `handle_state_` member when creating
// new handles. They are used for postMessage and IndexedDB, serialization as
// well as a couple of other APIs.
//
// Instances of this class should always be used from the sequence they were
// created on.
class CONTENT_EXPORT FileSystemAccessTransferTokenImpl
: public blink::mojom::FileSystemAccessTransferToken {
public:
FileSystemAccessTransferTokenImpl(
const storage::FileSystemURL& url,
const url::Origin& origin,
const std::string& display_name,
const FileSystemAccessManagerImpl::SharedHandleState& handle_state,
FileSystemAccessPermissionContext::HandleType handle_type,
FileSystemAccessManagerImpl* manager,
mojo::PendingReceiver<blink::mojom::FileSystemAccessTransferToken>
receiver);
FileSystemAccessTransferTokenImpl(const FileSystemAccessTransferTokenImpl&) =
delete;
FileSystemAccessTransferTokenImpl& operator=(
const FileSystemAccessTransferTokenImpl&) = delete;
~FileSystemAccessTransferTokenImpl() override;
const base::UnguessableToken& token() const { return token_; }
FileSystemAccessPermissionContext::HandleType type() const {
return handle_type_;
}
const storage::FileSystemURL& url() const { return url_; }
const url::Origin& origin() const { return origin_; }
// Returns permission grants associated with this token. These can
// return nullptr if this token does not have associated permission grants.
FileSystemAccessPermissionGrant* GetReadGrant() const;
FileSystemAccessPermissionGrant* GetWriteGrant() const;
std::unique_ptr<FileSystemAccessFileHandleImpl> CreateFileHandle(
const FileSystemAccessManagerImpl::BindingContext& binding_context) const;
std::unique_ptr<FileSystemAccessDirectoryHandleImpl> CreateDirectoryHandle(
const FileSystemAccessManagerImpl::BindingContext& binding_context) const;
// blink::mojom::FileSystemAccessTransferToken:
void GetInternalID(GetInternalIDCallback callback) override;
void Clone(mojo::PendingReceiver<blink::mojom::FileSystemAccessTransferToken>
clone_receiver) override;
private:
void OnMojoDisconnect();
SEQUENCE_CHECKER(sequence_checker_);
// This token may contain multiple receivers, which includes a receiver for
// the originally constructed instance and then additional receivers for
// each clone. `manager_` must not remove this token until `receivers_` is
// empty.
const base::UnguessableToken token_;
const FileSystemAccessPermissionContext::HandleType handle_type_;
// Raw pointer since FileSystemAccessManagerImpl owns `this`.
const raw_ptr<FileSystemAccessManagerImpl> manager_ = nullptr;
const storage::FileSystemURL url_;
const url::Origin origin_;
const std::string display_name_;
const FileSystemAccessManagerImpl::SharedHandleState handle_state_;
mojo::ReceiverSet<blink::mojom::FileSystemAccessTransferToken> receivers_
GUARDED_BY_CONTEXT(sequence_checker_);
};
} // namespace content
#endif // CONTENT_BROWSER_FILE_SYSTEM_ACCESS_FILE_SYSTEM_ACCESS_TRANSFER_TOKEN_IMPL_H_
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