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/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* 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
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