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/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=8 sts=2 et sw=2 tw=80: */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#ifndef DOM_INDEXEDDB_INDEXEDDBCIPHERKEYMANAGER_H_
#define DOM_INDEXEDDB_INDEXEDDBCIPHERKEYMANAGER_H_
#include "mozilla/DataMutex.h"
#include "mozilla/dom/quota/IPCStreamCipherStrategy.h"
#include "nsTHashMap.h"
namespace mozilla::dom::indexedDB {
using IndexedDBCipherStrategy = quota::IPCStreamCipherStrategy;
using CipherKey = IndexedDBCipherStrategy::KeyType;
class IndexedDBCipherKeyManager {
// This helper class is used by IndexedDB operations to store/retrieve cipher
// keys in private browsing mode. All data in IndexedDB must be encrypted
// using a cipher key and unique IV (Initialization Vector). While there's a
// separate cipher key for every blob file; the SQLite database gets encrypted
// using the commmon database key. All keys pertaining to a single IndexedDB
// database get stored together in a hashmap. So the hashmap can be used to
// to look up the common database key and blob keys using "default" and blob
// file ids respectively.
public:
IndexedDBCipherKeyManager() : mCipherKeys("IndexedDBCipherKeyManager"){};
Maybe<CipherKey> Get(const nsACString& aKeyId = "default"_ns);
CipherKey Ensure(const nsACString& aKeyId = "default"_ns);
private:
// XXX Maybe we can avoid a mutex here by moving all accesses to the
// background thread.
DataMutex<nsTHashMap<nsCStringHashKey, CipherKey>> mCipherKeys;
};
} // namespace mozilla::dom::indexedDB
#endif // DOM_INDEXEDDB_INDEXEDDBCIPHERKEYMANAGER_H_
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