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-rw-r--r--dom/cache/QuotaClient.cpp243
1 files changed, 243 insertions, 0 deletions
diff --git a/dom/cache/QuotaClient.cpp b/dom/cache/QuotaClient.cpp
new file mode 100644
index 000000000..5641c953c
--- /dev/null
+++ b/dom/cache/QuotaClient.cpp
@@ -0,0 +1,243 @@
+/* -*- 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/. */
+
+#include "mozilla/dom/cache/QuotaClient.h"
+
+#include "mozilla/dom/cache/Manager.h"
+#include "mozilla/dom/quota/QuotaManager.h"
+#include "mozilla/dom/quota/UsageInfo.h"
+#include "mozilla/ipc/BackgroundParent.h"
+#include "nsIFile.h"
+#include "nsISimpleEnumerator.h"
+#include "nsThreadUtils.h"
+
+namespace {
+
+using mozilla::Atomic;
+using mozilla::dom::ContentParentId;
+using mozilla::dom::cache::Manager;
+using mozilla::dom::quota::Client;
+using mozilla::dom::quota::PersistenceType;
+using mozilla::dom::quota::QuotaManager;
+using mozilla::dom::quota::UsageInfo;
+using mozilla::ipc::AssertIsOnBackgroundThread;
+
+static nsresult
+GetBodyUsage(nsIFile* aDir, const Atomic<bool>& aCanceled,
+ UsageInfo* aUsageInfo)
+{
+ nsCOMPtr<nsISimpleEnumerator> entries;
+ nsresult rv = aDir->GetDirectoryEntries(getter_AddRefs(entries));
+ if (NS_WARN_IF(NS_FAILED(rv))) { return rv; }
+
+ bool hasMore;
+ while (NS_SUCCEEDED(rv = entries->HasMoreElements(&hasMore)) && hasMore &&
+ !aCanceled) {
+ nsCOMPtr<nsISupports> entry;
+ rv = entries->GetNext(getter_AddRefs(entry));
+ if (NS_WARN_IF(NS_FAILED(rv))) { return rv; }
+
+ nsCOMPtr<nsIFile> file = do_QueryInterface(entry);
+
+ bool isDir;
+ rv = file->IsDirectory(&isDir);
+ if (NS_WARN_IF(NS_FAILED(rv))) { return rv; }
+
+ if (isDir) {
+ rv = GetBodyUsage(file, aCanceled, aUsageInfo);
+ if (NS_WARN_IF(NS_FAILED(rv))) { return rv; }
+ continue;
+ }
+
+ int64_t fileSize;
+ rv = file->GetFileSize(&fileSize);
+ if (NS_WARN_IF(NS_FAILED(rv))) { return rv; }
+ MOZ_DIAGNOSTIC_ASSERT(fileSize >= 0);
+
+ aUsageInfo->AppendToFileUsage(fileSize);
+ }
+
+ return NS_OK;
+}
+
+class CacheQuotaClient final : public Client
+{
+public:
+ virtual Type
+ GetType() override
+ {
+ return DOMCACHE;
+ }
+
+ virtual nsresult
+ InitOrigin(PersistenceType aPersistenceType, const nsACString& aGroup,
+ const nsACString& aOrigin, const AtomicBool& aCanceled,
+ UsageInfo* aUsageInfo) override
+ {
+ // The QuotaManager passes a nullptr UsageInfo if there is no quota being
+ // enforced against the origin.
+ if (!aUsageInfo) {
+ return NS_OK;
+ }
+
+ return GetUsageForOrigin(aPersistenceType, aGroup, aOrigin, aCanceled,
+ aUsageInfo);
+ }
+
+ virtual nsresult
+ GetUsageForOrigin(PersistenceType aPersistenceType, const nsACString& aGroup,
+ const nsACString& aOrigin, const AtomicBool& aCanceled,
+ UsageInfo* aUsageInfo) override
+ {
+ MOZ_DIAGNOSTIC_ASSERT(aUsageInfo);
+
+ QuotaManager* qm = QuotaManager::Get();
+ MOZ_DIAGNOSTIC_ASSERT(qm);
+
+ nsCOMPtr<nsIFile> dir;
+ nsresult rv = qm->GetDirectoryForOrigin(aPersistenceType, aOrigin,
+ getter_AddRefs(dir));
+ if (NS_WARN_IF(NS_FAILED(rv))) { return rv; }
+
+ rv = dir->Append(NS_LITERAL_STRING(DOMCACHE_DIRECTORY_NAME));
+ if (NS_WARN_IF(NS_FAILED(rv))) { return rv; }
+
+ nsCOMPtr<nsISimpleEnumerator> entries;
+ rv = dir->GetDirectoryEntries(getter_AddRefs(entries));
+ if (NS_WARN_IF(NS_FAILED(rv))) { return rv; }
+
+ bool hasMore;
+ while (NS_SUCCEEDED(rv = entries->HasMoreElements(&hasMore)) && hasMore &&
+ !aCanceled) {
+ nsCOMPtr<nsISupports> entry;
+ rv = entries->GetNext(getter_AddRefs(entry));
+ if (NS_WARN_IF(NS_FAILED(rv))) { return rv; }
+
+ nsCOMPtr<nsIFile> file = do_QueryInterface(entry);
+
+ nsAutoString leafName;
+ rv = file->GetLeafName(leafName);
+ if (NS_WARN_IF(NS_FAILED(rv))) { return rv; }
+
+ bool isDir;
+ rv = file->IsDirectory(&isDir);
+ if (NS_WARN_IF(NS_FAILED(rv))) { return rv; }
+
+ if (isDir) {
+ if (leafName.EqualsLiteral("morgue")) {
+ rv = GetBodyUsage(file, aCanceled, aUsageInfo);
+ if (NS_WARN_IF(NS_FAILED(rv))) { return rv; }
+ } else {
+ NS_WARNING("Unknown Cache directory found!");
+ }
+
+ continue;
+ }
+
+ // Ignore transient sqlite files and marker files
+ if (leafName.EqualsLiteral("caches.sqlite-journal") ||
+ leafName.EqualsLiteral("caches.sqlite-shm") ||
+ leafName.Find(NS_LITERAL_CSTRING("caches.sqlite-mj"), false, 0, 0) == 0 ||
+ leafName.EqualsLiteral("context_open.marker")) {
+ continue;
+ }
+
+ if (leafName.EqualsLiteral("caches.sqlite") ||
+ leafName.EqualsLiteral("caches.sqlite-wal")) {
+ int64_t fileSize;
+ rv = file->GetFileSize(&fileSize);
+ if (NS_WARN_IF(NS_FAILED(rv))) { return rv; }
+ MOZ_DIAGNOSTIC_ASSERT(fileSize >= 0);
+
+ aUsageInfo->AppendToDatabaseUsage(fileSize);
+ continue;
+ }
+
+ NS_WARNING("Unknown Cache file found!");
+ }
+
+ return NS_OK;
+ }
+
+ virtual void
+ OnOriginClearCompleted(PersistenceType aPersistenceType,
+ const nsACString& aOrigin) override
+ {
+ // Nothing to do here.
+ }
+
+ virtual void
+ ReleaseIOThreadObjects() override
+ {
+ // Nothing to do here as the Context handles cleaning everything up
+ // automatically.
+ }
+
+ virtual void
+ AbortOperations(const nsACString& aOrigin) override
+ {
+ AssertIsOnBackgroundThread();
+
+ Manager::Abort(aOrigin);
+ }
+
+ virtual void
+ AbortOperationsForProcess(ContentParentId aContentParentId) override
+ {
+ // The Cache and Context can be shared by multiple client processes. They
+ // are not exclusively owned by a single process.
+ //
+ // As far as I can tell this is used by QuotaManager to abort operations
+ // when a particular process goes away. We definitely don't want this
+ // since we are shared. Also, the Cache actor code already properly
+ // handles asynchronous actor destruction when the child process dies.
+ //
+ // Therefore, do nothing here.
+ }
+
+ virtual void
+ StartIdleMaintenance() override
+ { }
+
+ virtual void
+ StopIdleMaintenance() override
+ { }
+
+ virtual void
+ ShutdownWorkThreads() override
+ {
+ AssertIsOnBackgroundThread();
+
+ // spins the event loop and synchronously shuts down all Managers
+ Manager::ShutdownAll();
+ }
+
+private:
+ ~CacheQuotaClient()
+ {
+ AssertIsOnBackgroundThread();
+ }
+
+ NS_INLINE_DECL_REFCOUNTING(CacheQuotaClient, override)
+};
+
+} // namespace
+
+namespace mozilla {
+namespace dom {
+namespace cache {
+
+already_AddRefed<quota::Client> CreateQuotaClient()
+{
+ AssertIsOnBackgroundThread();
+
+ RefPtr<CacheQuotaClient> ref = new CacheQuotaClient();
+ return ref.forget();
+}
+
+} // namespace cache
+} // namespace dom
+} // namespace mozilla