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gecko-dev/dom/quota/QuotaManager.cpp

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/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=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 "QuotaManager.h"
#include "mozIApplicationClearPrivateDataParams.h"
#include "nsIAtom.h"
#include "nsIFile.h"
#include "nsIObserverService.h"
#include "nsIOfflineStorage.h"
#include "nsIPrincipal.h"
#include "nsIQuotaRequest.h"
#include "nsIRunnable.h"
#include "nsISimpleEnumerator.h"
#include "nsIScriptObjectPrincipal.h"
#include "nsIScriptSecurityManager.h"
#include "nsITimer.h"
#include "nsIURI.h"
#include "nsIUsageCallback.h"
#include <algorithm>
#include "mozilla/dom/file/FileService.h"
#include "mozilla/dom/indexedDB/Client.h"
#include "mozilla/LazyIdleThread.h"
#include "mozilla/Preferences.h"
#include "mozilla/Services.h"
#include "nsAppDirectoryServiceDefs.h"
#include "nsComponentManagerUtils.h"
#include "nsContentUtils.h"
#include "nsCRTGlue.h"
#include "nsDirectoryServiceUtils.h"
#include "nsScriptSecurityManager.h"
#include "nsThreadUtils.h"
#include "nsXULAppAPI.h"
#include "xpcpublic.h"
#include "AcquireListener.h"
#include "CheckQuotaHelper.h"
#include "OriginOrPatternString.h"
#include "QuotaObject.h"
#include "StorageMatcher.h"
#include "UsageRunnable.h"
#include "Utilities.h"
// The amount of time, in milliseconds, that our IO thread will stay alive
// after the last event it processes.
#define DEFAULT_THREAD_TIMEOUT_MS 30000
// The amount of time, in milliseconds, that we will wait for active storage
// transactions on shutdown before aborting them.
#define DEFAULT_SHUTDOWN_TIMER_MS 30000
// Amount of space that storages may use by default in megabytes.
#define DEFAULT_QUOTA_MB 50
// Preference that users can set to override DEFAULT_QUOTA_MB
#define PREF_STORAGE_QUOTA "dom.indexedDB.warningQuota"
// profile-before-change, when we need to shut down quota manager
#define PROFILE_BEFORE_CHANGE_OBSERVER_ID "profile-before-change"
#define METADATA_FILE_NAME ".metadata"
USING_QUOTA_NAMESPACE
using namespace mozilla::dom;
using mozilla::dom::file::FileService;
BEGIN_QUOTA_NAMESPACE
// A struct that contains the information corresponding to a pending or
// running operation that requires synchronization (e.g. opening a db,
// clearing dbs for an origin, etc).
struct SynchronizedOp
{
SynchronizedOp(const OriginOrPatternString& aOriginOrPattern,
nsISupports* aId);
~SynchronizedOp();
// Test whether this SynchronizedOp needs to wait for the given op.
bool
MustWaitFor(const SynchronizedOp& aOp);
void
DelayRunnable(nsIRunnable* aRunnable);
void
DispatchDelayedRunnables();
const OriginOrPatternString mOriginOrPattern;
nsCOMPtr<nsISupports> mId;
nsRefPtr<AcquireListener> mListener;
nsTArray<nsCOMPtr<nsIRunnable> > mDelayedRunnables;
ArrayCluster<nsIOfflineStorage*> mStorages;
};
// Responsible for clearing the storage files for a particular origin on the
// IO thread. Created when nsIQuotaManager::ClearStoragesForURI is called.
// Runs three times, first on the main thread, next on the IO thread, and then
// finally again on the main thread. While on the IO thread the runnable will
// actually remove the origin's storage files and the directory that contains
// them before dispatching itself back to the main thread. When back on the main
// thread the runnable will notify the QuotaManager that the job has been
// completed.
class OriginClearRunnable MOZ_FINAL : public nsIRunnable,
public AcquireListener
{
enum CallbackState {
// Not yet run.
Pending = 0,
// Running on the main thread in the callback for OpenAllowed.
OpenAllowed,
// Running on the IO thread.
IO,
// Running on the main thread after all work is done.
Complete
};
public:
NS_DECL_ISUPPORTS
NS_DECL_NSIRUNNABLE
// AcquireListener override
virtual nsresult
OnExclusiveAccessAcquired() MOZ_OVERRIDE;
OriginClearRunnable(const OriginOrPatternString& aOriginOrPattern)
: mOriginOrPattern(aOriginOrPattern),
mCallbackState(Pending)
{ }
void
AdvanceState()
{
switch (mCallbackState) {
case Pending:
mCallbackState = OpenAllowed;
return;
case OpenAllowed:
mCallbackState = IO;
return;
case IO:
mCallbackState = Complete;
return;
default:
NS_NOTREACHED("Can't advance past Complete!");
}
}
static void
InvalidateOpenedStorages(nsTArray<nsCOMPtr<nsIOfflineStorage> >& aStorages,
void* aClosure);
void
DeleteFiles(QuotaManager* aQuotaManager);
private:
OriginOrPatternString mOriginOrPattern;
CallbackState mCallbackState;
};
// Responsible for calculating the amount of space taken up by storages of a
// certain origin. Created when nsIQuotaManager::GetUsageForURI is called.
// May be canceled with nsIQuotaRequest::Cancel. Runs three times, first
// on the main thread, next on the IO thread, and then finally again on the main
// thread. While on the IO thread the runnable will calculate the size of all
// files in the origin's directory before dispatching itself back to the main
// thread. When on the main thread the runnable will call the callback and then
// notify the QuotaManager that the job has been completed.
class AsyncUsageRunnable MOZ_FINAL : public UsageRunnable,
public nsIRunnable,
public nsIQuotaRequest
{
enum CallbackState {
// Not yet run.
Pending = 0,
// Running on the main thread in the callback for OpenAllowed.
OpenAllowed,
// Running on the IO thread.
IO,
// Running on the main thread after all work is done.
Complete,
// Running on the main thread after skipping the work
Shortcut
};
public:
NS_DECL_ISUPPORTS
NS_DECL_NSIRUNNABLE
NS_DECL_NSIQUOTAREQUEST
AsyncUsageRunnable(uint32_t aAppId,
bool aInMozBrowserOnly,
const OriginOrPatternString& aOrigin,
nsIURI* aURI,
nsIUsageCallback* aCallback);
void
AdvanceState()
{
switch (mCallbackState) {
case Pending:
mCallbackState = OpenAllowed;
return;
case OpenAllowed:
mCallbackState = IO;
return;
case IO:
mCallbackState = Complete;
return;
default:
NS_NOTREACHED("Can't advance past Complete!");
}
}
nsresult
TakeShortcut();
// Run calls the RunInternal method and makes sure that we always dispatch
// to the main thread in case of an error.
inline nsresult
RunInternal();
nsCOMPtr<nsIURI> mURI;
nsCOMPtr<nsIUsageCallback> mCallback;
uint32_t mAppId;
OriginOrPatternString mOrigin;
CallbackState mCallbackState;
bool mInMozBrowserOnly;
};
END_QUOTA_NAMESPACE
namespace {
QuotaManager* gInstance = nullptr;
int32_t gShutdown = 0;
int32_t gStorageQuotaMB = DEFAULT_QUOTA_MB;
// A callback runnable used by the TransactionPool when it's safe to proceed
// with a SetVersion/DeleteDatabase/etc.
class WaitForTransactionsToFinishRunnable MOZ_FINAL : public nsIRunnable
{
public:
WaitForTransactionsToFinishRunnable(SynchronizedOp* aOp)
: mOp(aOp), mCountdown(1)
{
NS_ASSERTION(mOp, "Why don't we have a runnable?");
NS_ASSERTION(mOp->mStorages.IsEmpty(), "We're here too early!");
NS_ASSERTION(mOp->mListener,
"What are we supposed to do when we're done?");
NS_ASSERTION(mCountdown, "Wrong countdown!");
}
NS_DECL_ISUPPORTS
NS_DECL_NSIRUNNABLE
void
AddRun()
{
mCountdown++;
}
private:
// The QuotaManager holds this alive.
SynchronizedOp* mOp;
uint32_t mCountdown;
};
class WaitForLockedFilesToFinishRunnable MOZ_FINAL : public nsIRunnable
{
public:
WaitForLockedFilesToFinishRunnable()
: mBusy(true)
{ }
NS_DECL_ISUPPORTS
NS_DECL_NSIRUNNABLE
bool
IsBusy() const
{
return mBusy;
}
private:
bool mBusy;
};
bool
IsMainProcess()
{
return XRE_GetProcessType() == GeckoProcessType_Default;
}
void
SanitizeOriginString(nsCString& aOrigin)
{
// We want profiles to be platform-independent so we always need to replace
// the same characters on every platform. Windows has the most extensive set
// of illegal characters so we use its FILE_ILLEGAL_CHARACTERS and
// FILE_PATH_SEPARATOR.
static const char kReplaceChars[] = CONTROL_CHARACTERS "/:*?\"<>|\\";
#ifdef XP_WIN
NS_ASSERTION(!strcmp(kReplaceChars,
FILE_ILLEGAL_CHARACTERS FILE_PATH_SEPARATOR),
"Illegal file characters have changed!");
#endif
aOrigin.ReplaceChar(kReplaceChars, '+');
}
PLDHashOperator
RemoveQuotaForPatternCallback(const nsACString& aKey,
nsRefPtr<OriginInfo>& aValue,
void* aUserArg)
{
NS_ASSERTION(!aKey.IsEmpty(), "Empty key!");
NS_ASSERTION(aValue, "Null pointer!");
NS_ASSERTION(aUserArg, "Null pointer!");
const nsACString* pattern =
static_cast<const nsACString*>(aUserArg);
if (PatternMatchesOrigin(*pattern, aKey)) {
return PL_DHASH_REMOVE;
}
return PL_DHASH_NEXT;
}
} // anonymous namespace
QuotaManager::QuotaManager()
: mCurrentWindowIndex(BAD_TLS_INDEX),
mQuotaMutex("QuotaManager.mQuotaMutex")
{
NS_ASSERTION(NS_IsMainThread(), "Wrong thread!");
NS_ASSERTION(!gInstance, "More than one instance!");
}
QuotaManager::~QuotaManager()
{
NS_ASSERTION(NS_IsMainThread(), "Wrong thread!");
NS_ASSERTION(!gInstance || gInstance == this, "Different instances!");
gInstance = nullptr;
}
// static
QuotaManager*
QuotaManager::GetOrCreate()
{
NS_ASSERTION(NS_IsMainThread(), "Wrong thread!");
if (IsShuttingDown()) {
NS_ERROR("Calling GetOrCreate() after shutdown!");
return nullptr;
}
if (!gInstance) {
nsRefPtr<QuotaManager> instance(new QuotaManager());
nsresult rv = instance->Init();
NS_ENSURE_SUCCESS(rv, nullptr);
nsCOMPtr<nsIObserverService> obs = mozilla::services::GetObserverService();
NS_ENSURE_TRUE(obs, nullptr);
// We need this callback to know when to shut down all our threads.
rv = obs->AddObserver(instance, PROFILE_BEFORE_CHANGE_OBSERVER_ID, false);
NS_ENSURE_SUCCESS(rv, nullptr);
// The observer service will hold our last reference, don't AddRef here.
gInstance = instance;
}
return gInstance;
}
// static
QuotaManager*
QuotaManager::Get()
{
// Does not return an owning reference.
return gInstance;
}
// static
QuotaManager*
QuotaManager::FactoryCreate()
{
// Returns a raw pointer that carries an owning reference! Lame, but the
// singleton factory macros force this.
QuotaManager* quotaManager = GetOrCreate();
NS_IF_ADDREF(quotaManager);
return quotaManager;
}
// static
bool
QuotaManager::IsShuttingDown()
{
return !!gShutdown;
}
nsresult
QuotaManager::Init()
{
// We need a thread-local to hold the current window.
NS_ASSERTION(mCurrentWindowIndex == BAD_TLS_INDEX, "Huh?");
if (PR_NewThreadPrivateIndex(&mCurrentWindowIndex, nullptr) != PR_SUCCESS) {
NS_ERROR("PR_NewThreadPrivateIndex failed, QuotaManager disabled");
mCurrentWindowIndex = BAD_TLS_INDEX;
return NS_ERROR_FAILURE;
}
nsresult rv;
if (IsMainProcess()) {
nsCOMPtr<nsIFile> dbBaseDirectory;
rv = NS_GetSpecialDirectory(NS_APP_INDEXEDDB_PARENT_DIR,
getter_AddRefs(dbBaseDirectory));
if (NS_FAILED(rv)) {
rv = NS_GetSpecialDirectory(NS_APP_USER_PROFILE_50_DIR,
getter_AddRefs(dbBaseDirectory));
}
NS_ENSURE_SUCCESS(rv, rv);
rv = dbBaseDirectory->Append(NS_LITERAL_STRING("indexedDB"));
NS_ENSURE_SUCCESS(rv, rv);
rv = dbBaseDirectory->GetPath(mStorageBasePath);
NS_ENSURE_SUCCESS(rv, rv);
// Make a lazy thread for any IO we need (like clearing or enumerating the
// contents of storage directories).
mIOThread = new LazyIdleThread(DEFAULT_THREAD_TIMEOUT_MS,
NS_LITERAL_CSTRING("Storage I/O"),
LazyIdleThread::ManualShutdown);
// Make a timer here to avoid potential failures later. We don't actually
// initialize the timer until shutdown.
mShutdownTimer = do_CreateInstance(NS_TIMER_CONTRACTID);
NS_ENSURE_TRUE(mShutdownTimer, NS_ERROR_FAILURE);
}
if (NS_FAILED(Preferences::AddIntVarCache(&gStorageQuotaMB,
PREF_STORAGE_QUOTA,
DEFAULT_QUOTA_MB))) {
NS_WARNING("Unable to respond to quota pref changes!");
gStorageQuotaMB = DEFAULT_QUOTA_MB;
}
mOriginInfos.Init();
mCheckQuotaHelpers.Init();
mLiveStorages.Init();
MOZ_STATIC_ASSERT(Client::IDB == 0 && Client::TYPE_MAX == 1,
"Fix the registration!");
NS_ASSERTION(mClients.Capacity() == Client::TYPE_MAX,
"Should be using an auto array with correct capacity!");
// Register IndexedDB
mClients.AppendElement(new indexedDB::Client());
return NS_OK;
}
void
QuotaManager::InitQuotaForOrigin(const nsACString& aOrigin,
int64_t aLimitBytes,
int64_t aUsageBytes)
{
MOZ_ASSERT(aUsageBytes >= 0);
MOZ_ASSERT(aLimitBytes > 0);
MOZ_ASSERT(aUsageBytes <= aLimitBytes);
OriginInfo* info = new OriginInfo(aOrigin, aLimitBytes, aUsageBytes);
MutexAutoLock lock(mQuotaMutex);
NS_ASSERTION(!mOriginInfos.GetWeak(aOrigin), "Replacing an existing entry!");
mOriginInfos.Put(aOrigin, info);
}
void
QuotaManager::DecreaseUsageForOrigin(const nsACString& aOrigin,
int64_t aSize)
{
MutexAutoLock lock(mQuotaMutex);
nsRefPtr<OriginInfo> originInfo;
mOriginInfos.Get(aOrigin, getter_AddRefs(originInfo));
if (originInfo) {
originInfo->mUsage -= aSize;
}
}
void
QuotaManager::RemoveQuotaForPattern(const nsACString& aPattern)
{
NS_ASSERTION(!aPattern.IsEmpty(), "Empty pattern!");
MutexAutoLock lock(mQuotaMutex);
mOriginInfos.Enumerate(RemoveQuotaForPatternCallback,
const_cast<nsACString*>(&aPattern));
}
already_AddRefed<QuotaObject>
QuotaManager::GetQuotaObject(const nsACString& aOrigin,
nsIFile* aFile)
{
NS_ASSERTION(!NS_IsMainThread(), "Wrong thread!");
nsString path;
nsresult rv = aFile->GetPath(path);
NS_ENSURE_SUCCESS(rv, nullptr);
int64_t fileSize;
bool exists;
rv = aFile->Exists(&exists);
NS_ENSURE_SUCCESS(rv, nullptr);
if (exists) {
rv = aFile->GetFileSize(&fileSize);
NS_ENSURE_SUCCESS(rv, nullptr);
}
else {
fileSize = 0;
}
QuotaObject* info = nullptr;
{
MutexAutoLock lock(mQuotaMutex);
nsRefPtr<OriginInfo> originInfo;
mOriginInfos.Get(aOrigin, getter_AddRefs(originInfo));
if (!originInfo) {
return nullptr;
}
originInfo->mQuotaObjects.Get(path, &info);
if (!info) {
info = new QuotaObject(originInfo, path, fileSize);
originInfo->mQuotaObjects.Put(path, info);
}
}
nsRefPtr<QuotaObject> result = info;
return result.forget();
}
already_AddRefed<QuotaObject>
QuotaManager::GetQuotaObject(const nsACString& aOrigin,
const nsAString& aPath)
{
nsresult rv;
nsCOMPtr<nsIFile> file = do_CreateInstance(NS_LOCAL_FILE_CONTRACTID, &rv);
NS_ENSURE_SUCCESS(rv, nullptr);
rv = file->InitWithPath(aPath);
NS_ENSURE_SUCCESS(rv, nullptr);
return GetQuotaObject(aOrigin, file);
}
bool
QuotaManager::RegisterStorage(nsIOfflineStorage* aStorage)
{
NS_ASSERTION(NS_IsMainThread(), "Wrong thread!");
NS_ASSERTION(aStorage, "Null pointer!");
// Don't allow any new storages to be created after shutdown.
if (IsShuttingDown()) {
return false;
}
// Add this storage to its origin info if it exists, create it otherwise.
const nsACString& origin = aStorage->Origin();
ArrayCluster<nsIOfflineStorage*>* cluster;
if (!mLiveStorages.Get(origin, &cluster)) {
cluster = new ArrayCluster<nsIOfflineStorage*>();
mLiveStorages.Put(origin, cluster);
}
(*cluster)[aStorage->GetClient()->GetType()].AppendElement(aStorage);
return true;
}
void
QuotaManager::UnregisterStorage(nsIOfflineStorage* aStorage)
{
NS_ASSERTION(NS_IsMainThread(), "Wrong thread!");
NS_ASSERTION(aStorage, "Null pointer!");
// Remove this storage from its origin array, maybe remove the array if it
// is then empty.
const nsACString& origin = aStorage->Origin();
ArrayCluster<nsIOfflineStorage*>* cluster;
if (mLiveStorages.Get(origin, &cluster) &&
(*cluster)[aStorage->GetClient()->GetType()].RemoveElement(aStorage)) {
if (cluster->IsEmpty()) {
mLiveStorages.Remove(origin);
}
return;
}
NS_ERROR("Didn't know anything about this storage!");
}
void
QuotaManager::OnStorageClosed(nsIOfflineStorage* aStorage)
{
NS_ASSERTION(NS_IsMainThread(), "Wrong thread!");
NS_ASSERTION(aStorage, "Null pointer!");
// Check through the list of SynchronizedOps to see if any are waiting for
// this storage to close before proceeding.
SynchronizedOp* op =
FindSynchronizedOp(aStorage->Origin(), aStorage->Id());
if (op) {
Client::Type clientType = aStorage->GetClient()->GetType();
// This storage is in the scope of this SynchronizedOp. Remove it
// from the list if necessary.
if (op->mStorages[clientType].RemoveElement(aStorage)) {
// Now set up the helper if there are no more live storages.
NS_ASSERTION(op->mListener,
"How did we get rid of the listener before removing the "
"last storage?");
if (op->mStorages[clientType].IsEmpty()) {
// At this point, all storages are closed, so no new transactions
// can be started. There may, however, still be outstanding
// transactions that have not completed. We need to wait for those
// before we dispatch the helper.
if (NS_FAILED(RunSynchronizedOp(aStorage, op))) {
NS_WARNING("Failed to run synchronized op!");
}
}
}
}
}
void
QuotaManager::AbortCloseStoragesForWindow(nsPIDOMWindow* aWindow)
{
NS_ASSERTION(NS_IsMainThread(), "Wrong thread!");
NS_ASSERTION(aWindow, "Null pointer!");
FileService* service = FileService::Get();
StorageMatcher<ArrayCluster<nsIOfflineStorage*> > liveStorages;
liveStorages.Find(mLiveStorages);
for (uint32_t i = 0; i < Client::TYPE_MAX; i++) {
nsRefPtr<Client>& client = mClients[i];
bool utilized = service && client->IsFileServiceUtilized();
bool activated = client->IsTransactionServiceActivated();
nsTArray<nsIOfflineStorage*>& array = liveStorages[i];
for (uint32_t j = 0; j < array.Length(); j++) {
nsIOfflineStorage*& storage = array[j];
if (storage->IsOwned(aWindow)) {
if (NS_FAILED(storage->Close())) {
NS_WARNING("Failed to close storage for dying window!");
}
if (utilized) {
service->AbortLockedFilesForStorage(storage);
}
if (activated) {
client->AbortTransactionsForStorage(storage);
}
}
}
}
}
bool
QuotaManager::HasOpenTransactions(nsPIDOMWindow* aWindow)
{
NS_ASSERTION(NS_IsMainThread(), "Wrong thread!");
NS_ASSERTION(aWindow, "Null pointer!");
FileService* service = FileService::Get();
nsAutoPtr<StorageMatcher<ArrayCluster<nsIOfflineStorage*> > > liveStorages;
for (uint32_t i = 0; i < Client::TYPE_MAX; i++) {
nsRefPtr<Client>& client = mClients[i];
bool utilized = service && client->IsFileServiceUtilized();
bool activated = client->IsTransactionServiceActivated();
if (utilized || activated) {
if (!liveStorages) {
liveStorages = new StorageMatcher<ArrayCluster<nsIOfflineStorage*> >();
liveStorages->Find(mLiveStorages);
}
nsTArray<nsIOfflineStorage*>& storages = liveStorages->ArrayAt(i);
for (uint32_t j = 0; j < storages.Length(); j++) {
nsIOfflineStorage*& storage = storages[j];
if (storage->IsOwned(aWindow) &&
((utilized && service->HasLockedFilesForStorage(storage)) ||
(activated && client->HasTransactionsForStorage(storage)))) {
return true;
}
}
}
}
return false;
}
nsresult
QuotaManager::WaitForOpenAllowed(const OriginOrPatternString& aOriginOrPattern,
nsIAtom* aId,
nsIRunnable* aRunnable)
{
NS_ASSERTION(NS_IsMainThread(), "Wrong thread!");
NS_ASSERTION(!aOriginOrPattern.IsEmpty(), "Empty pattern!");
NS_ASSERTION(aRunnable, "Null pointer!");
nsAutoPtr<SynchronizedOp> op(new SynchronizedOp(aOriginOrPattern, aId));
// See if this runnable needs to wait.
bool delayed = false;
for (uint32_t index = mSynchronizedOps.Length(); index > 0; index--) {
nsAutoPtr<SynchronizedOp>& existingOp = mSynchronizedOps[index - 1];
if (op->MustWaitFor(*existingOp)) {
existingOp->DelayRunnable(aRunnable);
delayed = true;
break;
}
}
// Otherwise, dispatch it immediately.
if (!delayed) {
nsresult rv = NS_DispatchToCurrentThread(aRunnable);
NS_ENSURE_SUCCESS(rv, rv);
}
// Adding this to the synchronized ops list will block any additional
// ops from proceeding until this one is done.
mSynchronizedOps.AppendElement(op.forget());
return NS_OK;
}
void
QuotaManager::AllowNextSynchronizedOp(
const OriginOrPatternString& aOriginOrPattern,
nsIAtom* aId)
{
NS_ASSERTION(NS_IsMainThread(), "Wrong thread!");
NS_ASSERTION(!aOriginOrPattern.IsEmpty(), "Empty origin/pattern!");
uint32_t count = mSynchronizedOps.Length();
for (uint32_t index = 0; index < count; index++) {
nsAutoPtr<SynchronizedOp>& op = mSynchronizedOps[index];
if (op->mOriginOrPattern.IsOrigin() == aOriginOrPattern.IsOrigin() &&
op->mOriginOrPattern == aOriginOrPattern) {
if (op->mId == aId) {
NS_ASSERTION(op->mStorages.IsEmpty(), "How did this happen?");
op->DispatchDelayedRunnables();
mSynchronizedOps.RemoveElementAt(index);
return;
}
// If one or the other is for an origin clear, we should have matched
// solely on origin.
NS_ASSERTION(op->mId && aId, "Why didn't we match earlier?");
}
}
NS_NOTREACHED("Why didn't we find a SynchronizedOp?");
}
nsresult
QuotaManager::GetDirectoryForOrigin(const nsACString& aASCIIOrigin,
nsIFile** aDirectory) const
{
nsresult rv;
nsCOMPtr<nsIFile> directory =
do_CreateInstance(NS_LOCAL_FILE_CONTRACTID, &rv);
NS_ENSURE_SUCCESS(rv, rv);
rv = directory->InitWithPath(mStorageBasePath);
NS_ENSURE_SUCCESS(rv, rv);
nsAutoCString originSanitized(aASCIIOrigin);
SanitizeOriginString(originSanitized);
rv = directory->Append(NS_ConvertASCIItoUTF16(originSanitized));
NS_ENSURE_SUCCESS(rv, rv);
directory.forget(aDirectory);
return NS_OK;
}
nsresult
QuotaManager::EnsureOriginIsInitialized(const nsACString& aOrigin,
bool aTrackQuota,
nsIFile** aDirectory)
{
#ifdef DEBUG
{
bool correctThread;
NS_ASSERTION(NS_SUCCEEDED(mIOThread->IsOnCurrentThread(&correctThread)) &&
correctThread,
"Running on the wrong thread!");
}
#endif
nsCOMPtr<nsIFile> directory;
nsresult rv = GetDirectoryForOrigin(aOrigin, getter_AddRefs(directory));
NS_ENSURE_SUCCESS(rv, rv);
bool exists;
rv = directory->Exists(&exists);
NS_ENSURE_SUCCESS(rv, rv);
if (exists) {
bool isDirectory;
rv = directory->IsDirectory(&isDirectory);
NS_ENSURE_SUCCESS(rv, rv);
NS_ENSURE_TRUE(isDirectory, NS_ERROR_UNEXPECTED);
}
else {
rv = directory->Create(nsIFile::DIRECTORY_TYPE, 0755);
NS_ENSURE_SUCCESS(rv, rv);
nsCOMPtr<nsIFile> metadataFile;
rv = directory->Clone(getter_AddRefs(metadataFile));
NS_ENSURE_SUCCESS(rv, rv);
rv = metadataFile->Append(NS_LITERAL_STRING(METADATA_FILE_NAME));
NS_ENSURE_SUCCESS(rv, rv);
rv = metadataFile->Create(nsIFile::NORMAL_FILE_TYPE, 0644);
NS_ENSURE_SUCCESS(rv, rv);
}
if (mInitializedOrigins.Contains(aOrigin)) {
NS_ADDREF(*aDirectory = directory);
return NS_OK;
}
rv = MaybeUpgradeOriginDirectory(directory);
NS_ENSURE_SUCCESS(rv, rv);
// We need to initialize directories of all clients if they exists and also
// get the total usage to initialize the quota.
nsAutoPtr<UsageRunnable> runnable;
if (aTrackQuota) {
runnable = new UsageRunnable();
}
nsCOMPtr<nsISimpleEnumerator> entries;
rv = directory->GetDirectoryEntries(getter_AddRefs(entries));
NS_ENSURE_SUCCESS(rv, rv);
bool hasMore;
while (NS_SUCCEEDED((rv = entries->HasMoreElements(&hasMore))) && hasMore) {
nsCOMPtr<nsISupports> entry;
rv = entries->GetNext(getter_AddRefs(entry));
NS_ENSURE_SUCCESS(rv, rv);
nsCOMPtr<nsIFile> file = do_QueryInterface(entry);
NS_ENSURE_TRUE(file, NS_NOINTERFACE);
nsString leafName;
rv = file->GetLeafName(leafName);
NS_ENSURE_SUCCESS(rv, rv);
if (leafName.EqualsLiteral(METADATA_FILE_NAME)) {
continue;
}
bool isDirectory;
rv = file->IsDirectory(&isDirectory);
NS_ENSURE_SUCCESS(rv, rv);
if (!isDirectory) {
NS_WARNING("Unknown file found!");
return NS_ERROR_UNEXPECTED;
}
Client::Type clientType;
rv = Client::TypeFromText(leafName, clientType);
if (NS_FAILED(rv)) {
NS_WARNING("Unknown directory found!");
return NS_ERROR_UNEXPECTED;
}
rv = mClients[clientType]->InitOrigin(aOrigin, runnable);
NS_ENSURE_SUCCESS(rv, rv);
}
if (aTrackQuota) {
uint64_t quotaMaxBytes = GetStorageQuotaMB() * 1024 * 1024;
uint64_t totalUsageBytes = runnable->TotalUsage();
if (totalUsageBytes > quotaMaxBytes) {
NS_WARNING("Origin is already using more storage than allowed by quota!");
return NS_ERROR_UNEXPECTED;
}
// XXX This signed/unsigned mismatch must be fixed.
int64_t limit = quotaMaxBytes >= uint64_t(INT64_MAX) ?
INT64_MAX :
int64_t(quotaMaxBytes);
int64_t usage = totalUsageBytes >= uint64_t(INT64_MAX) ?
INT64_MAX :
int64_t(totalUsageBytes);
InitQuotaForOrigin(aOrigin, limit, usage);
}
mInitializedOrigins.AppendElement(aOrigin);
NS_ADDREF(*aDirectory = directory);
return NS_OK;
}
void
QuotaManager::UninitializeOriginsByPattern(const nsACString& aPattern)
{
#ifdef DEBUG
{
bool correctThread;
NS_ASSERTION(NS_SUCCEEDED(mIOThread->IsOnCurrentThread(&correctThread)) &&
correctThread,
"Running on the wrong thread!");
}
#endif
for (int32_t i = mInitializedOrigins.Length() - 1; i >= 0; i--) {
if (PatternMatchesOrigin(aPattern, mInitializedOrigins[i])) {
mInitializedOrigins.RemoveElementAt(i);
}
}
}
already_AddRefed<mozilla::dom::quota::Client>
QuotaManager::GetClient(Client::Type aClientType)
{
nsRefPtr<Client> client = mClients.SafeElementAt(aClientType);
return client.forget();
}
// static
uint32_t
QuotaManager::GetStorageQuotaMB()
{
return uint32_t(std::max(gStorageQuotaMB, 0));
}
// static
already_AddRefed<nsIAtom>
QuotaManager::GetStorageId(const nsACString& aOrigin,
const nsAString& aName)
{
nsCString str(aOrigin);
str.Append("*");
str.Append(NS_ConvertUTF16toUTF8(aName));
nsCOMPtr<nsIAtom> atom = do_GetAtom(str);
NS_ENSURE_TRUE(atom, nullptr);
return atom.forget();
}
// static
nsresult
QuotaManager::GetASCIIOriginFromURI(nsIURI* aURI,
uint32_t aAppId,
bool aInMozBrowser,
nsACString& aASCIIOrigin)
{
NS_ASSERTION(aURI, "Null uri!");
nsCString origin;
mozilla::GetExtendedOrigin(aURI, aAppId, aInMozBrowser, origin);
if (origin.IsEmpty()) {
NS_WARNING("GetExtendedOrigin returned empty string!");
return NS_ERROR_FAILURE;
}
aASCIIOrigin.Assign(origin);
return NS_OK;
}
// static
nsresult
QuotaManager::GetASCIIOriginFromPrincipal(nsIPrincipal* aPrincipal,
nsACString& aASCIIOrigin)
{
NS_ASSERTION(aPrincipal, "Don't hand me a null principal!");
static const char kChromeOrigin[] = "chrome";
nsCString origin;
if (nsContentUtils::IsSystemPrincipal(aPrincipal)) {
origin.AssignLiteral(kChromeOrigin);
}
else {
bool isNullPrincipal;
nsresult rv = aPrincipal->GetIsNullPrincipal(&isNullPrincipal);
NS_ENSURE_SUCCESS(rv, rv);
if (isNullPrincipal) {
NS_WARNING("IndexedDB not supported from this principal!");
return NS_ERROR_FAILURE;
}
rv = aPrincipal->GetExtendedOrigin(origin);
NS_ENSURE_SUCCESS(rv, rv);
if (origin.EqualsLiteral(kChromeOrigin)) {
NS_WARNING("Non-chrome principal can't use chrome origin!");
return NS_ERROR_FAILURE;
}
}
aASCIIOrigin.Assign(origin);
return NS_OK;
}
// static
nsresult
QuotaManager::GetASCIIOriginFromWindow(nsPIDOMWindow* aWindow,
nsACString& aASCIIOrigin)
{
NS_ASSERTION(NS_IsMainThread(),
"We're about to touch a window off the main thread!");
if (!aWindow) {
aASCIIOrigin.AssignLiteral("chrome");
NS_ASSERTION(nsContentUtils::IsCallerChrome(),
"Null window but not chrome!");
return NS_OK;
}
nsCOMPtr<nsIScriptObjectPrincipal> sop = do_QueryInterface(aWindow);
NS_ENSURE_TRUE(sop, NS_ERROR_FAILURE);
nsCOMPtr<nsIPrincipal> principal = sop->GetPrincipal();
NS_ENSURE_TRUE(principal, NS_ERROR_FAILURE);
nsresult rv = GetASCIIOriginFromPrincipal(principal, aASCIIOrigin);
NS_ENSURE_SUCCESS(rv, rv);
return NS_OK;
}
NS_IMPL_ISUPPORTS2(QuotaManager, nsIQuotaManager, nsIObserver)
NS_IMETHODIMP
QuotaManager::GetUsageForURI(nsIURI* aURI,
nsIUsageCallback* aCallback,
uint32_t aAppId,
bool aInMozBrowserOnly,
uint8_t aOptionalArgCount,
nsIQuotaRequest** _retval)
{
NS_ASSERTION(NS_IsMainThread(), "Wrong thread!");
NS_ENSURE_ARG_POINTER(aURI);
NS_ENSURE_ARG_POINTER(aCallback);
// This only works from the main process.
NS_ENSURE_TRUE(IsMainProcess(), NS_ERROR_NOT_AVAILABLE);
if (!aOptionalArgCount) {
aAppId = nsIScriptSecurityManager::NO_APP_ID;
}
// Figure out which origin we're dealing with.
nsCString origin;
nsresult rv = GetASCIIOriginFromURI(aURI, aAppId, aInMozBrowserOnly, origin);
NS_ENSURE_SUCCESS(rv, rv);
OriginOrPatternString oops = OriginOrPatternString::FromOrigin(origin);
nsRefPtr<AsyncUsageRunnable> runnable =
new AsyncUsageRunnable(aAppId, aInMozBrowserOnly, oops, aURI, aCallback);
// Put the computation runnable in the queue.
rv = WaitForOpenAllowed(oops, nullptr, runnable);
NS_ENSURE_SUCCESS(rv, rv);
runnable->AdvanceState();
runnable.forget(_retval);
return NS_OK;
}
NS_IMETHODIMP
QuotaManager::ClearStoragesForURI(nsIURI* aURI,
uint32_t aAppId,
bool aInMozBrowserOnly,
uint8_t aOptionalArgCount)
{
NS_ASSERTION(NS_IsMainThread(), "Wrong thread!");
NS_ENSURE_ARG_POINTER(aURI);
// This only works from the main process.
NS_ENSURE_TRUE(IsMainProcess(), NS_ERROR_NOT_AVAILABLE);
if (!aOptionalArgCount) {
aAppId = nsIScriptSecurityManager::NO_APP_ID;
}
// Figure out which origin we're dealing with.
nsCString origin;
nsresult rv = GetASCIIOriginFromURI(aURI, aAppId, aInMozBrowserOnly, origin);
NS_ENSURE_SUCCESS(rv, rv);
nsAutoCString pattern;
GetOriginPatternString(aAppId, aInMozBrowserOnly, origin, pattern);
// If there is a pending or running clear operation for this origin, return
// immediately.
if (IsClearOriginPending(pattern)) {
return NS_OK;
}
OriginOrPatternString oops = OriginOrPatternString::FromPattern(pattern);
// Queue up the origin clear runnable.
nsRefPtr<OriginClearRunnable> runnable = new OriginClearRunnable(oops);
rv = WaitForOpenAllowed(oops, nullptr, runnable);
NS_ENSURE_SUCCESS(rv, rv);
runnable->AdvanceState();
// Give the runnable some help by invalidating any storages in the way.
StorageMatcher<nsAutoTArray<nsIOfflineStorage*, 20> > matches;
matches.Find(mLiveStorages, pattern);
for (uint32_t index = 0; index < matches.Length(); index++) {
// We need to grab references to any live storages here to prevent them
// from dying while we invalidate them.
nsCOMPtr<nsIOfflineStorage> storage = matches[index];
storage->Invalidate();
}
// After everything has been invalidated the helper should be dispatched to
// the end of the event queue.
return NS_OK;
}
NS_IMETHODIMP
QuotaManager::Observe(nsISupports* aSubject,
const char* aTopic,
const PRUnichar* aData)
{
NS_ASSERTION(NS_IsMainThread(), "Wrong thread!");
if (!strcmp(aTopic, PROFILE_BEFORE_CHANGE_OBSERVER_ID)) {
// Setting this flag prevents the service from being recreated and prevents
// further storagess from being created.
if (PR_ATOMIC_SET(&gShutdown, 1)) {
NS_ERROR("Shutdown more than once?!");
}
if (IsMainProcess()) {
FileService* service = FileService::Get();
if (service) {
// This should only wait for storages registered in this manager
// to complete. Other storages may still have running locked files.
// If the necko service (thread pool) gets the shutdown notification
// first then the sync loop won't be processed at all, otherwise it will
// lock the main thread until all storages registered in this manager
// are finished.
nsTArray<uint32_t> indexes;
for (uint32_t index = 0; index < Client::TYPE_MAX; index++) {
if (mClients[index]->IsFileServiceUtilized()) {
indexes.AppendElement(index);
}
}
StorageMatcher<nsTArray<nsCOMPtr<nsIFileStorage> > > liveStorages;
liveStorages.Find(mLiveStorages, &indexes);
if (!liveStorages.IsEmpty()) {
nsRefPtr<WaitForLockedFilesToFinishRunnable> runnable =
new WaitForLockedFilesToFinishRunnable();
service->WaitForStoragesToComplete(liveStorages, runnable);
nsIThread* thread = NS_GetCurrentThread();
while (runnable->IsBusy()) {
if (!NS_ProcessNextEvent(thread)) {
NS_ERROR("Failed to process next event!");
break;
}
}
}
}
// Make sure to join with our IO thread.
if (NS_FAILED(mIOThread->Shutdown())) {
NS_WARNING("Failed to shutdown IO thread!");
}
// Kick off the shutdown timer.
if (NS_FAILED(mShutdownTimer->Init(this, DEFAULT_SHUTDOWN_TIMER_MS,
nsITimer::TYPE_ONE_SHOT))) {
NS_WARNING("Failed to initialize shutdown timer!");
}
// Each client will spin the event loop while we wait on all the threads
// to close. Our timer may fire during that loop.
for (uint32_t index = 0; index < Client::TYPE_MAX; index++) {
mClients[index]->ShutdownTransactionService();
}
// Cancel the timer regardless of whether it actually fired.
if (NS_FAILED(mShutdownTimer->Cancel())) {
NS_WARNING("Failed to cancel shutdown timer!");
}
}
for (uint32_t index = 0; index < Client::TYPE_MAX; index++) {
mClients[index]->OnShutdownCompleted();
}
return NS_OK;
}
if (!strcmp(aTopic, NS_TIMER_CALLBACK_TOPIC)) {
NS_ASSERTION(IsMainProcess(), "Should only happen in the main process!");
NS_WARNING("Some storage operations are taking longer than expected "
"during shutdown and will be aborted!");
// Grab all live storages, for all origins.
StorageMatcher<nsAutoTArray<nsIOfflineStorage*, 50> > liveStorages;
liveStorages.Find(mLiveStorages);
// Invalidate them all.
if (!liveStorages.IsEmpty()) {
uint32_t count = liveStorages.Length();
for (uint32_t index = 0; index < count; index++) {
liveStorages[index]->Invalidate();
}
}
return NS_OK;
}
if (!strcmp(aTopic, TOPIC_WEB_APP_CLEAR_DATA)) {
nsCOMPtr<mozIApplicationClearPrivateDataParams> params =
do_QueryInterface(aSubject);
NS_ENSURE_TRUE(params, NS_ERROR_UNEXPECTED);
uint32_t appId;
nsresult rv = params->GetAppId(&appId);
NS_ENSURE_SUCCESS(rv, rv);
bool browserOnly;
rv = params->GetBrowserOnly(&browserOnly);
NS_ENSURE_SUCCESS(rv, rv);
rv = ClearStoragesForApp(appId, browserOnly);
NS_ENSURE_SUCCESS(rv, rv);
return NS_OK;
}
NS_NOTREACHED("Unknown topic!");
return NS_ERROR_UNEXPECTED;
}
void
QuotaManager::SetCurrentWindowInternal(nsPIDOMWindow* aWindow)
{
NS_ASSERTION(mCurrentWindowIndex != BAD_TLS_INDEX,
"Should have a valid TLS storage index!");
if (aWindow) {
NS_ASSERTION(!PR_GetThreadPrivate(mCurrentWindowIndex),
"Somebody forgot to clear the current window!");
PR_SetThreadPrivate(mCurrentWindowIndex, aWindow);
}
else {
// We cannot assert PR_GetThreadPrivate(mCurrentWindowIndex) here because
// there are some cases where we did not already have a window.
PR_SetThreadPrivate(mCurrentWindowIndex, nullptr);
}
}
void
QuotaManager::CancelPromptsForWindowInternal(nsPIDOMWindow* aWindow)
{
NS_ASSERTION(NS_IsMainThread(), "Wrong thread!");
nsRefPtr<CheckQuotaHelper> helper;
MutexAutoLock autoLock(mQuotaMutex);
if (mCheckQuotaHelpers.Get(aWindow, getter_AddRefs(helper))) {
helper->Cancel();
}
}
bool
QuotaManager::LockedQuotaIsLifted()
{
mQuotaMutex.AssertCurrentThreadOwns();
NS_ASSERTION(mCurrentWindowIndex != BAD_TLS_INDEX,
"Should have a valid TLS storage index!");
nsPIDOMWindow* window =
static_cast<nsPIDOMWindow*>(PR_GetThreadPrivate(mCurrentWindowIndex));
// Quota is not enforced in chrome contexts (e.g. for components and JSMs)
// so we must have a window here.
NS_ASSERTION(window, "Why don't we have a Window here?");
bool createdHelper = false;
nsRefPtr<CheckQuotaHelper> helper;
if (!mCheckQuotaHelpers.Get(window, getter_AddRefs(helper))) {
helper = new CheckQuotaHelper(window, mQuotaMutex);
createdHelper = true;
mCheckQuotaHelpers.Put(window, helper);
// Unlock while calling out to XPCOM
{
MutexAutoUnlock autoUnlock(mQuotaMutex);
nsresult rv = NS_DispatchToMainThread(helper);
NS_ENSURE_SUCCESS(rv, false);
}
// Relocked. If any other threads hit the quota limit on the same Window,
// they are using the helper we created here and are now blocking in
// PromptAndReturnQuotaDisabled.
}
bool result = helper->PromptAndReturnQuotaIsDisabled();
// If this thread created the helper and added it to the hash, this thread
// must remove it.
if (createdHelper) {
mCheckQuotaHelpers.Remove(window);
}
return result;
}
nsresult
QuotaManager::AcquireExclusiveAccess(const nsACString& aPattern,
nsIOfflineStorage* aStorage,
AcquireListener* aListener,
WaitingOnStoragesCallback aCallback,
void* aClosure)
{
NS_ASSERTION(NS_IsMainThread(), "Wrong thread!");
NS_ASSERTION(aListener, "Need a listener!");
// Find the right SynchronizedOp.
SynchronizedOp* op =
FindSynchronizedOp(aPattern, aStorage ? aStorage->Id() : nullptr);
NS_ASSERTION(op, "We didn't find a SynchronizedOp?");
NS_ASSERTION(!op->mListener, "SynchronizedOp already has a listener?!?");
nsTArray<nsCOMPtr<nsIOfflineStorage> > liveStorages;
if (aStorage) {
// We need to wait for the storages to go away.
// Hold on to all storage objects that represent the same storage file
// (except the one that is requesting this version change).
Client::Type clientType = aStorage->GetClient()->GetType();
StorageMatcher<nsAutoTArray<nsIOfflineStorage*, 20> > matches;
matches.Find(mLiveStorages, aPattern, clientType);
if (!matches.IsEmpty()) {
// Grab all storages that are not yet closed but whose storage id match
// the one we're looking for.
for (uint32_t index = 0; index < matches.Length(); index++) {
nsIOfflineStorage*& storage = matches[index];
if (!storage->IsClosed() &&
storage != aStorage &&
storage->Id() == aStorage->Id()) {
liveStorages.AppendElement(storage);
}
}
}
if (!liveStorages.IsEmpty()) {
NS_ASSERTION(op->mStorages[clientType].IsEmpty(),
"How do we already have storages here?");
op->mStorages[clientType].AppendElements(liveStorages);
}
}
else {
StorageMatcher<ArrayCluster<nsIOfflineStorage*> > matches;
matches.Find(mLiveStorages, aPattern);
if (!matches.IsEmpty()) {
// We want *all* storages, even those that are closed, when we're going to
// clear the origin.
matches.AppendElementsTo(liveStorages);
NS_ASSERTION(op->mStorages.IsEmpty(),
"How do we already have storages here?");
matches.SwapElements(op->mStorages);
}
}
op->mListener = aListener;
if (!liveStorages.IsEmpty()) {
// Give our callback the storages so it can decide what to do with them.
aCallback(liveStorages, aClosure);
NS_ASSERTION(liveStorages.IsEmpty(),
"Should have done something with the array!");
if (aStorage) {
// Wait for those storages to close.
return NS_OK;
}
}
// If we're trying to open a storage and nothing blocks it, or if we're
// clearing an origin, then go ahead and schedule the op.
nsresult rv = RunSynchronizedOp(aStorage, op);
NS_ENSURE_SUCCESS(rv, rv);
return NS_OK;
}
nsresult
QuotaManager::RunSynchronizedOp(nsIOfflineStorage* aStorage,
SynchronizedOp* aOp)
{
NS_ASSERTION(NS_IsMainThread(), "Wrong thread!");
NS_ASSERTION(aOp, "Null pointer!");
NS_ASSERTION(aOp->mListener, "No listener on this op!");
NS_ASSERTION(!aStorage ||
aOp->mStorages[aStorage->GetClient()->GetType()].IsEmpty(),
"This op isn't ready to run!");
ArrayCluster<nsIOfflineStorage*> storages;
uint32_t startIndex;
uint32_t endIndex;
if (aStorage) {
Client::Type clientType = aStorage->GetClient()->GetType();
storages[clientType].AppendElement(aStorage);
startIndex = clientType;
endIndex = clientType + 1;
}
else {
aOp->mStorages.SwapElements(storages);
startIndex = 0;
endIndex = Client::TYPE_MAX;
}
nsRefPtr<WaitForTransactionsToFinishRunnable> runnable =
new WaitForTransactionsToFinishRunnable(aOp);
// Ask the file service to call us back when it's done with this storage.
FileService* service = FileService::Get();
if (service) {
// Have to copy here in case a transaction service needs a list too.
nsTArray<nsCOMPtr<nsIFileStorage> > array;
for (uint32_t index = startIndex; index < endIndex; index++) {
if (!storages[index].IsEmpty() &&
mClients[index]->IsFileServiceUtilized()) {
array.AppendElements(storages[index]);
}
}
if (!array.IsEmpty()) {
runnable->AddRun();
service->WaitForStoragesToComplete(array, runnable);
}
}
// Ask each transaction service to call us back when they're done with this
// storage.
for (uint32_t index = startIndex; index < endIndex; index++) {
nsRefPtr<Client>& client = mClients[index];
if (!storages[index].IsEmpty() && client->IsTransactionServiceActivated()) {
runnable->AddRun();
client->WaitForStoragesToComplete(storages[index], runnable);
}
}
nsresult rv = runnable->Run();
NS_ENSURE_SUCCESS(rv, rv);
return NS_OK;
}
SynchronizedOp*
QuotaManager::FindSynchronizedOp(const nsACString& aPattern,
nsISupports* aId)
{
for (uint32_t index = 0; index < mSynchronizedOps.Length(); index++) {
const nsAutoPtr<SynchronizedOp>& currentOp = mSynchronizedOps[index];
if (PatternMatchesOrigin(aPattern, currentOp->mOriginOrPattern) &&
(!currentOp->mId || currentOp->mId == aId)) {
return currentOp;
}
}
return nullptr;
}
nsresult
QuotaManager::ClearStoragesForApp(uint32_t aAppId, bool aBrowserOnly)
{
NS_ASSERTION(NS_IsMainThread(), "Wrong thread!");
NS_ASSERTION(aAppId != nsIScriptSecurityManager::UNKNOWN_APP_ID,
"Bad appId!");
// This only works from the main process.
NS_ENSURE_TRUE(IsMainProcess(), NS_ERROR_NOT_AVAILABLE);
nsAutoCString pattern;
GetOriginPatternStringMaybeIgnoreBrowser(aAppId, aBrowserOnly, pattern);
// If there is a pending or running clear operation for this app, return
// immediately.
if (IsClearOriginPending(pattern)) {
return NS_OK;
}
OriginOrPatternString oops = OriginOrPatternString::FromPattern(pattern);
// Queue up the origin clear runnable.
nsRefPtr<OriginClearRunnable> runnable = new OriginClearRunnable(oops);
nsresult rv = WaitForOpenAllowed(oops, nullptr, runnable);
NS_ENSURE_SUCCESS(rv, rv);
runnable->AdvanceState();
// Give the runnable some help by invalidating any storages in the way.
StorageMatcher<nsAutoTArray<nsIOfflineStorage*, 20> > matches;
matches.Find(mLiveStorages, pattern);
for (uint32_t index = 0; index < matches.Length(); index++) {
// We need to grab references here to prevent the storage from dying while
// we invalidate it.
nsCOMPtr<nsIOfflineStorage> storage = matches[index];
storage->Invalidate();
}
return NS_OK;
}
nsresult
QuotaManager::MaybeUpgradeOriginDirectory(nsIFile* aDirectory)
{
NS_ASSERTION(aDirectory, "Null pointer!");
nsCOMPtr<nsIFile> metadataFile;
nsresult rv = aDirectory->Clone(getter_AddRefs(metadataFile));
NS_ENSURE_SUCCESS(rv, rv);
rv = metadataFile->Append(NS_LITERAL_STRING(METADATA_FILE_NAME));
NS_ENSURE_SUCCESS(rv, rv);
bool exists;
rv = metadataFile->Exists(&exists);
NS_ENSURE_SUCCESS(rv, rv);
if (!exists) {
// Directory structure upgrade needed.
// Move all files to IDB specific directory.
nsString idbDirectoryName;
rv = Client::TypeToText(Client::IDB, idbDirectoryName);
NS_ENSURE_SUCCESS(rv, rv);
nsCOMPtr<nsIFile> idbDirectory;
rv = aDirectory->Clone(getter_AddRefs(idbDirectory));
NS_ENSURE_SUCCESS(rv, rv);
rv = idbDirectory->Append(idbDirectoryName);
NS_ENSURE_SUCCESS(rv, rv);
rv = idbDirectory->Create(nsIFile::DIRECTORY_TYPE, 0755);
if (NS_FAILED(rv)) {
NS_WARNING("IDB directory already exists!");
}
nsCOMPtr<nsISimpleEnumerator> entries;
rv = aDirectory->GetDirectoryEntries(getter_AddRefs(entries));
NS_ENSURE_SUCCESS(rv, rv);
bool hasMore;
while (NS_SUCCEEDED((rv = entries->HasMoreElements(&hasMore))) && hasMore) {
nsCOMPtr<nsISupports> entry;
rv = entries->GetNext(getter_AddRefs(entry));
NS_ENSURE_SUCCESS(rv, rv);
nsCOMPtr<nsIFile> file = do_QueryInterface(entry);
NS_ENSURE_TRUE(file, NS_NOINTERFACE);
nsString leafName;
rv = file->GetLeafName(leafName);
NS_ENSURE_SUCCESS(rv, rv);
if (!leafName.Equals(idbDirectoryName)) {
rv = file->MoveTo(idbDirectory, EmptyString());
NS_ENSURE_SUCCESS(rv, rv);
}
}
rv = metadataFile->Create(nsIFile::NORMAL_FILE_TYPE, 0644);
NS_ENSURE_SUCCESS(rv, rv);
}
return NS_OK;
}
void
QuotaManager::GetOriginPatternString(uint32_t aAppId,
MozBrowserPatternFlag aBrowserFlag,
const nsACString& aOrigin,
nsAutoCString& _retval)
{
NS_ASSERTION(aAppId != nsIScriptSecurityManager::UNKNOWN_APP_ID,
"Bad appId!");
NS_ASSERTION(aOrigin.IsEmpty() || aBrowserFlag != IgnoreMozBrowser,
"Bad args!");
if (aOrigin.IsEmpty()) {
_retval.Truncate();
_retval.AppendInt(aAppId);
_retval.Append('+');
if (aBrowserFlag != IgnoreMozBrowser) {
if (aBrowserFlag == MozBrowser) {
_retval.Append('t');
}
else {
_retval.Append('f');
}
_retval.Append('+');
}
return;
}
#ifdef DEBUG
if (aAppId != nsIScriptSecurityManager::NO_APP_ID ||
aBrowserFlag == MozBrowser) {
nsAutoCString pattern;
GetOriginPatternString(aAppId, aBrowserFlag, EmptyCString(), pattern);
NS_ASSERTION(PatternMatchesOrigin(pattern, aOrigin),
"Origin doesn't match parameters!");
}
#endif
_retval = aOrigin;
}
SynchronizedOp::SynchronizedOp(const OriginOrPatternString& aOriginOrPattern,
nsISupports* aId)
: mOriginOrPattern(aOriginOrPattern), mId(aId)
{
NS_ASSERTION(NS_IsMainThread(), "Wrong thread!");
MOZ_COUNT_CTOR(SynchronizedOp);
}
SynchronizedOp::~SynchronizedOp()
{
NS_ASSERTION(NS_IsMainThread(), "Wrong thread!");
MOZ_COUNT_DTOR(SynchronizedOp);
}
bool
SynchronizedOp::MustWaitFor(const SynchronizedOp& aExistingOp)
{
NS_ASSERTION(NS_IsMainThread(), "Wrong thread!");
bool match;
if (aExistingOp.mOriginOrPattern.IsOrigin()) {
if (mOriginOrPattern.IsOrigin()) {
match = aExistingOp.mOriginOrPattern.Equals(mOriginOrPattern);
}
else {
match = PatternMatchesOrigin(mOriginOrPattern, aExistingOp.mOriginOrPattern);
}
}
else if (mOriginOrPattern.IsOrigin()) {
match = PatternMatchesOrigin(aExistingOp.mOriginOrPattern, mOriginOrPattern);
}
else {
match = PatternMatchesOrigin(mOriginOrPattern, aExistingOp.mOriginOrPattern) ||
PatternMatchesOrigin(aExistingOp.mOriginOrPattern, mOriginOrPattern);
}
// If the origins don't match, the second can proceed.
if (!match) {
return false;
}
// If the origins and the ids match, the second must wait.
if (aExistingOp.mId == mId) {
return true;
}
// Waiting is required if either one corresponds to an origin clearing
// (a null Id).
if (!aExistingOp.mId || !mId) {
return true;
}
// Otherwise, things for the same origin but different storages can proceed
// independently.
return false;
}
void
SynchronizedOp::DelayRunnable(nsIRunnable* aRunnable)
{
NS_ASSERTION(NS_IsMainThread(), "Wrong thread!");
NS_ASSERTION(mDelayedRunnables.IsEmpty() || !mId,
"Only ClearOrigin operations can delay multiple runnables!");
mDelayedRunnables.AppendElement(aRunnable);
}
void
SynchronizedOp::DispatchDelayedRunnables()
{
NS_ASSERTION(NS_IsMainThread(), "Wrong thread!");
NS_ASSERTION(!mListener, "Any listener should be gone by now!");
uint32_t count = mDelayedRunnables.Length();
for (uint32_t index = 0; index < count; index++) {
NS_DispatchToCurrentThread(mDelayedRunnables[index]);
}
mDelayedRunnables.Clear();
}
nsresult
OriginClearRunnable::OnExclusiveAccessAcquired()
{
QuotaManager* quotaManager = QuotaManager::Get();
NS_ASSERTION(quotaManager, "This should never fail!");
nsresult rv = quotaManager->IOThread()->Dispatch(this, NS_DISPATCH_NORMAL);
NS_ENSURE_SUCCESS(rv, rv);
return NS_OK;
}
// static
void
OriginClearRunnable::InvalidateOpenedStorages(
nsTArray<nsCOMPtr<nsIOfflineStorage> >& aStorages,
void* aClosure)
{
NS_ASSERTION(NS_IsMainThread(), "Wrong thread!");
nsTArray<nsCOMPtr<nsIOfflineStorage> > storages;
storages.SwapElements(aStorages);
for (uint32_t index = 0; index < storages.Length(); index++) {
storages[index]->Invalidate();
}
}
void
OriginClearRunnable::DeleteFiles(QuotaManager* aQuotaManager)
{
NS_ASSERTION(!NS_IsMainThread(), "Wrong thread!");
NS_ASSERTION(aQuotaManager, "Don't pass me null!");
nsresult rv;
nsCOMPtr<nsIFile> directory =
do_CreateInstance(NS_LOCAL_FILE_CONTRACTID, &rv);
NS_ENSURE_SUCCESS_VOID(rv);
rv = directory->InitWithPath(aQuotaManager->GetBaseDirectory());
NS_ENSURE_SUCCESS_VOID(rv);
nsCOMPtr<nsISimpleEnumerator> entries;
if (NS_FAILED(directory->GetDirectoryEntries(getter_AddRefs(entries))) ||
!entries) {
return;
}
nsCString originSanitized(mOriginOrPattern);
SanitizeOriginString(originSanitized);
bool hasMore;
while (NS_SUCCEEDED((rv = entries->HasMoreElements(&hasMore))) && hasMore) {
nsCOMPtr<nsISupports> entry;
rv = entries->GetNext(getter_AddRefs(entry));
NS_ENSURE_SUCCESS_VOID(rv);
nsCOMPtr<nsIFile> file = do_QueryInterface(entry);
NS_ASSERTION(file, "Don't know what this is!");
bool isDirectory;
rv = file->IsDirectory(&isDirectory);
NS_ENSURE_SUCCESS_VOID(rv);
if (!isDirectory) {
NS_WARNING("Something in the IndexedDB directory that doesn't belong!");
continue;
}
nsString leafName;
rv = file->GetLeafName(leafName);
NS_ENSURE_SUCCESS_VOID(rv);
// Skip storages for other apps.
if (!PatternMatchesOrigin(originSanitized,
NS_ConvertUTF16toUTF8(leafName))) {
continue;
}
if (NS_FAILED(file->Remove(true))) {
// This should never fail if we've closed all storage connections
// correctly...
NS_ERROR("Failed to remove directory!");
}
}
aQuotaManager->RemoveQuotaForPattern(mOriginOrPattern);
aQuotaManager->UninitializeOriginsByPattern(mOriginOrPattern);
}
NS_IMPL_THREADSAFE_ISUPPORTS1(OriginClearRunnable, nsIRunnable)
NS_IMETHODIMP
OriginClearRunnable::Run()
{
QuotaManager* quotaManager = QuotaManager::Get();
NS_ASSERTION(quotaManager, "This should never fail!");
switch (mCallbackState) {
case Pending: {
NS_NOTREACHED("Should never get here without being dispatched!");
return NS_ERROR_UNEXPECTED;
}
case OpenAllowed: {
NS_ASSERTION(NS_IsMainThread(), "Wrong thread!");
AdvanceState();
// Now we have to wait until the thread pool is done with all of the
// storages we care about.
nsresult rv =
quotaManager->AcquireExclusiveAccess(mOriginOrPattern, this,
InvalidateOpenedStorages, nullptr);
NS_ENSURE_SUCCESS(rv, rv);
return NS_OK;
}
case IO: {
NS_ASSERTION(!NS_IsMainThread(), "Wrong thread!");
AdvanceState();
DeleteFiles(quotaManager);
// Now dispatch back to the main thread.
if (NS_FAILED(NS_DispatchToMainThread(this, NS_DISPATCH_NORMAL))) {
NS_WARNING("Failed to dispatch to main thread!");
return NS_ERROR_FAILURE;
}
return NS_OK;
}
case Complete: {
NS_ASSERTION(NS_IsMainThread(), "Wrong thread!");
for (uint32_t index = 0; index < Client::TYPE_MAX; index++) {
quotaManager->mClients[index]->OnOriginClearCompleted(mOriginOrPattern);
}
// Tell the QuotaManager that we're done.
quotaManager->AllowNextSynchronizedOp(mOriginOrPattern, nullptr);
return NS_OK;
}
default:
NS_ERROR("Unknown state value!");
return NS_ERROR_UNEXPECTED;
}
NS_NOTREACHED("Should never get here!");
return NS_ERROR_UNEXPECTED;
}
AsyncUsageRunnable::AsyncUsageRunnable(uint32_t aAppId,
bool aInMozBrowserOnly,
const OriginOrPatternString& aOrigin,
nsIURI* aURI,
nsIUsageCallback* aCallback)
: mURI(aURI),
mCallback(aCallback),
mAppId(aAppId),
mOrigin(aOrigin),
mCallbackState(Pending),
mInMozBrowserOnly(aInMozBrowserOnly)
{
NS_ASSERTION(NS_IsMainThread(), "Wrong thread!");
NS_ASSERTION(aURI, "Null pointer!");
NS_ASSERTION(aOrigin.IsOrigin(), "Expect origin only here!");
NS_ASSERTION(!aOrigin.IsEmpty(), "Empty origin!");
NS_ASSERTION(aCallback, "Null pointer!");
}
nsresult
AsyncUsageRunnable::TakeShortcut()
{
NS_ASSERTION(mCallbackState == Pending, "Huh?");
nsresult rv = NS_DispatchToCurrentThread(this);
NS_ENSURE_SUCCESS(rv, rv);
mCallbackState = Shortcut;
return NS_OK;
}
nsresult
AsyncUsageRunnable::RunInternal()
{
QuotaManager* quotaManager = QuotaManager::Get();
NS_ASSERTION(quotaManager, "This should never fail!");
nsresult rv;
switch (mCallbackState) {
case Pending: {
NS_NOTREACHED("Should never get here without being dispatched!");
return NS_ERROR_UNEXPECTED;
}
case OpenAllowed: {
NS_ASSERTION(NS_IsMainThread(), "Wrong thread!");
AdvanceState();
rv = quotaManager->IOThread()->Dispatch(this, NS_DISPATCH_NORMAL);
if (NS_FAILED(rv)) {
NS_WARNING("Failed to dispatch to the IO thread!");
}
return NS_OK;
}
case IO: {
NS_ASSERTION(!NS_IsMainThread(), "Wrong thread!");
AdvanceState();
// Get the directory that contains all the storage files we care about.
nsCOMPtr<nsIFile> directory;
rv = quotaManager->GetDirectoryForOrigin(mOrigin,
getter_AddRefs(directory));
NS_ENSURE_SUCCESS(rv, rv);
bool exists;
rv = directory->Exists(&exists);
NS_ENSURE_SUCCESS(rv, rv);
// If the directory exists then enumerate all the files inside, adding up
// the sizes to get the final usage statistic.
if (exists && !mCanceled) {
bool initialized = quotaManager->mInitializedOrigins.Contains(mOrigin);
if (!initialized) {
rv = quotaManager->MaybeUpgradeOriginDirectory(directory);
NS_ENSURE_SUCCESS(rv, rv);
}
nsCOMPtr<nsISimpleEnumerator> entries;
rv = directory->GetDirectoryEntries(getter_AddRefs(entries));
NS_ENSURE_SUCCESS(rv, rv);
bool hasMore;
while (NS_SUCCEEDED((rv = entries->HasMoreElements(&hasMore))) &&
hasMore && !mCanceled) {
nsCOMPtr<nsISupports> entry;
rv = entries->GetNext(getter_AddRefs(entry));
NS_ENSURE_SUCCESS(rv, rv);
nsCOMPtr<nsIFile> file = do_QueryInterface(entry);
NS_ENSURE_TRUE(file, NS_NOINTERFACE);
nsString leafName;
rv = file->GetLeafName(leafName);
NS_ENSURE_SUCCESS(rv, rv);
if (leafName.EqualsLiteral(METADATA_FILE_NAME)) {
continue;
}
if (!initialized) {
bool isDirectory;
rv = file->IsDirectory(&isDirectory);
NS_ENSURE_SUCCESS(rv, rv);
if (!isDirectory) {
NS_WARNING("Unknown file found!");
return NS_ERROR_UNEXPECTED;
}
}
Client::Type clientType;
rv = Client::TypeFromText(leafName, clientType);
if (NS_FAILED(rv)) {
NS_WARNING("Unknown directory found!");
if (!initialized) {
return NS_ERROR_UNEXPECTED;
}
continue;
}
nsRefPtr<Client>& client = quotaManager->mClients[clientType];
if (!initialized) {
rv = client->InitOrigin(mOrigin, this);
}
else {
rv = client->GetUsageForOrigin(mOrigin, this);
}
NS_ENSURE_SUCCESS(rv, rv);
}
}
// Run dispatches us back to the main thread.
return NS_OK;
}
case Complete: // Fall through
case Shortcut: {
NS_ASSERTION(NS_IsMainThread(), "Wrong thread!");
// Call the callback unless we were canceled.
if (!mCanceled) {
mCallback->OnUsageResult(mURI, TotalUsage(), FileUsage(), mAppId,
mInMozBrowserOnly);
}
// Clean up.
mURI = nullptr;
mCallback = nullptr;
// And tell the QuotaManager that we're done.
if (mCallbackState == Complete) {
quotaManager->AllowNextSynchronizedOp(mOrigin, nullptr);
}
return NS_OK;
}
default:
NS_ERROR("Unknown state value!");
return NS_ERROR_UNEXPECTED;
}
NS_NOTREACHED("Should never get here!");
return NS_ERROR_UNEXPECTED;
}
NS_IMPL_THREADSAFE_ISUPPORTS2(AsyncUsageRunnable,
nsIRunnable,
nsIQuotaRequest)
NS_IMETHODIMP
AsyncUsageRunnable::Run()
{
nsresult rv = RunInternal();
if (!NS_IsMainThread()) {
if (NS_FAILED(rv)) {
ResetUsage();
}
if (NS_FAILED(NS_DispatchToMainThread(this, NS_DISPATCH_NORMAL))) {
NS_WARNING("Failed to dispatch to main thread!");
}
}
return NS_OK;
}
NS_IMETHODIMP
AsyncUsageRunnable::Cancel()
{
if (PR_ATOMIC_SET(&mCanceled, 1)) {
NS_WARNING("Canceled more than once?!");
return NS_ERROR_UNEXPECTED;
}
return NS_OK;
}
NS_IMPL_THREADSAFE_ISUPPORTS1(WaitForTransactionsToFinishRunnable, nsIRunnable)
NS_IMETHODIMP
WaitForTransactionsToFinishRunnable::Run()
{
NS_ASSERTION(NS_IsMainThread(), "Wrong thread!");
NS_ASSERTION(mOp, "Null op!");
NS_ASSERTION(mOp->mListener, "Nothing to run!");
NS_ASSERTION(mCountdown, "Wrong countdown!");
if (--mCountdown) {
return NS_OK;
}
// Don't hold the listener alive longer than necessary.
nsRefPtr<AcquireListener> listener;
listener.swap(mOp->mListener);
mOp = nullptr;
nsresult rv = listener->OnExclusiveAccessAcquired();
NS_ENSURE_SUCCESS(rv, rv);
// The listener is responsible for calling
// QuotaManager::AllowNextSynchronizedOp.
return NS_OK;
}
NS_IMPL_THREADSAFE_ISUPPORTS1(WaitForLockedFilesToFinishRunnable, nsIRunnable)
NS_IMETHODIMP
WaitForLockedFilesToFinishRunnable::Run()
{
NS_ASSERTION(NS_IsMainThread(), "Wrong thread!");
mBusy = false;
return NS_OK;
}
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