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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-19 01:47:29 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-19 01:47:29 +0000
commit0ebf5bdf043a27fd3dfb7f92e0cb63d88954c44d (patch)
treea31f07c9bcca9d56ce61e9a1ffd30ef350d513aa /dom/indexedDB/IndexedDBCipherKeyManager.h
parentInitial commit. (diff)
downloadfirefox-esr-0ebf5bdf043a27fd3dfb7f92e0cb63d88954c44d.tar.xz
firefox-esr-0ebf5bdf043a27fd3dfb7f92e0cb63d88954c44d.zip
Adding upstream version 115.8.0esr.upstream/115.8.0esr
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
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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_