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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/. */
#include "QuotaUsageRequestBase.h"
#include "mozilla/dom/quota/Assertions.h"
#include "mozilla/dom/quota/CommonMetadata.h"
#include "mozilla/dom/quota/FileUtils.h"
#include "mozilla/dom/quota/PQuotaRequest.h"
#include "mozilla/dom/quota/QuotaCommon.h"
#include "mozilla/dom/quota/QuotaManager.h"
#include "mozilla/dom/quota/ResultExtensions.h"
#include "mozilla/dom/quota/UsageInfo.h"
#include "nsIFile.h"
namespace mozilla::dom::quota {
Result<UsageInfo, nsresult> QuotaUsageRequestBase::GetUsageForOrigin(
QuotaManager& aQuotaManager, PersistenceType aPersistenceType,
const OriginMetadata& aOriginMetadata) {
AssertIsOnIOThread();
MOZ_ASSERT(aOriginMetadata.mPersistenceType == aPersistenceType);
QM_TRY_INSPECT(const auto& directory,
aQuotaManager.GetOriginDirectory(aOriginMetadata));
QM_TRY_INSPECT(const bool& exists,
MOZ_TO_RESULT_INVOKE_MEMBER(directory, Exists));
if (!exists || mCanceled) {
return UsageInfo();
}
// If the directory exists then enumerate all the files inside, adding up
// the sizes to get the final usage statistic.
bool initialized;
if (aPersistenceType == PERSISTENCE_TYPE_PERSISTENT) {
initialized = aQuotaManager.IsOriginInitialized(aOriginMetadata.mOrigin);
} else {
initialized = aQuotaManager.IsTemporaryStorageInitializedInternal();
}
return GetUsageForOriginEntries(aQuotaManager, aPersistenceType,
aOriginMetadata, *directory, initialized);
}
Result<UsageInfo, nsresult> QuotaUsageRequestBase::GetUsageForOriginEntries(
QuotaManager& aQuotaManager, PersistenceType aPersistenceType,
const OriginMetadata& aOriginMetadata, nsIFile& aDirectory,
const bool aInitialized) {
AssertIsOnIOThread();
QM_TRY_RETURN((ReduceEachFileAtomicCancelable(
aDirectory, mCanceled, UsageInfo{},
[&](UsageInfo oldUsageInfo, const nsCOMPtr<nsIFile>& file)
-> mozilla::Result<UsageInfo, nsresult> {
QM_TRY_INSPECT(
const auto& leafName,
MOZ_TO_RESULT_INVOKE_MEMBER_TYPED(nsAutoString, file, GetLeafName));
QM_TRY_INSPECT(const auto& dirEntryKind, GetDirEntryKind(*file));
switch (dirEntryKind) {
case nsIFileKind::ExistsAsDirectory: {
Client::Type clientType;
const bool ok =
Client::TypeFromText(leafName, clientType, fallible);
if (!ok) {
// Unknown directories during getting usage for an origin (even
// for an uninitialized origin) are now allowed. Just warn if we
// find them.
UNKNOWN_FILE_WARNING(leafName);
break;
}
Client* const client = aQuotaManager.GetClient(clientType);
MOZ_ASSERT(client);
QM_TRY_INSPECT(
const auto& usageInfo,
aInitialized ? client->GetUsageForOrigin(
aPersistenceType, aOriginMetadata, mCanceled)
: client->InitOrigin(aPersistenceType,
aOriginMetadata, mCanceled));
return oldUsageInfo + usageInfo;
}
case nsIFileKind::ExistsAsFile:
// We are maintaining existing behavior for unknown files here (just
// continuing).
// This can possibly be used by developers to add temporary backups
// into origin directories without losing get usage functionality.
if (IsTempMetadata(leafName)) {
if (!aInitialized) {
QM_TRY(MOZ_TO_RESULT(file->Remove(/* recursive */ false)));
}
break;
}
if (IsOriginMetadata(leafName) || IsOSMetadata(leafName) ||
IsDotFile(leafName)) {
break;
}
// Unknown files during getting usage for an origin (even for an
// uninitialized origin) are now allowed. Just warn if we find them.
UNKNOWN_FILE_WARNING(leafName);
break;
case nsIFileKind::DoesNotExist:
// Ignore files that got removed externally while iterating.
break;
}
return oldUsageInfo;
})));
}
void QuotaUsageRequestBase::SendResults() {
AssertIsOnOwningThread();
if (IsActorDestroyed()) {
if (NS_SUCCEEDED(mResultCode)) {
mResultCode = NS_ERROR_FAILURE;
}
} else {
if (mCanceled) {
mResultCode = NS_ERROR_FAILURE;
}
UsageRequestResponse response;
if (NS_SUCCEEDED(mResultCode)) {
GetResponse(response);
} else {
response = mResultCode;
}
Unused << PQuotaUsageRequestParent::Send__delete__(this, response);
}
}
void QuotaUsageRequestBase::ActorDestroy(ActorDestroyReason aWhy) {
AssertIsOnOwningThread();
NoteActorDestroyed();
}
mozilla::ipc::IPCResult QuotaUsageRequestBase::RecvCancel() {
AssertIsOnOwningThread();
if (mCanceled.exchange(true)) {
NS_WARNING("Canceled more than once?!");
return IPC_FAIL(this, "Request canceled more than once");
}
return IPC_OK();
}
} // namespace mozilla::dom::quota
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