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gecko-dev/dom/datastore/DataStoreService.cpp

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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 "DataStoreService.h"
#include "DataStoreCallbacks.h"
#include "DataStoreDB.h"
#include "DataStoreRevision.h"
#include "mozilla/dom/DataStore.h"
#include "mozilla/dom/DataStoreBinding.h"
#include "mozilla/dom/DataStoreImplBinding.h"
#include "nsIDataStore.h"
#include "mozilla/Preferences.h"
#include "mozilla/Services.h"
#include "mozilla/StaticPtr.h"
#include "mozilla/dom/ContentChild.h"
#include "mozilla/dom/ContentParent.h"
#include "mozilla/dom/DOMError.h"
#include "mozilla/dom/indexedDB/IDBCursor.h"
#include "mozilla/dom/indexedDB/IDBObjectStore.h"
#include "mozilla/dom/indexedDB/IDBRequest.h"
#include "mozilla/dom/indexedDB/IDBTransaction.h"
#include "mozilla/dom/PermissionMessageUtils.h"
#include "mozilla/dom/Promise.h"
#include "mozilla/unused.h"
#include "mozIApplication.h"
#include "mozIApplicationClearPrivateDataParams.h"
#include "nsIAppsService.h"
#include "nsIDOMEvent.h"
#include "nsIDocument.h"
#include "nsIDOMGlobalPropertyInitializer.h"
#include "nsIIOService.h"
#include "nsIMutableArray.h"
#include "nsIObserverService.h"
#include "nsIPermissionManager.h"
#include "nsIScriptSecurityManager.h"
#include "nsISupportsPrimitives.h"
#include "nsIUUIDGenerator.h"
#include "nsPIDOMWindow.h"
#include "nsIURI.h"
#include "nsContentUtils.h"
#include "nsNetCID.h"
#include "nsServiceManagerUtils.h"
#include "nsThreadUtils.h"
#include "nsXULAppAPI.h"
#define ASSERT_PARENT_PROCESS() \
MOZ_ASSERT(XRE_IsParentProcess()); \
if (NS_WARN_IF(!XRE_IsParentProcess())) { \
return NS_ERROR_FAILURE; \
}
namespace mozilla {
namespace dom {
using namespace indexedDB;
// This class contains all the information about a DataStore.
class DataStoreInfo
{
public:
DataStoreInfo()
: mReadOnly(true)
, mEnabled(false)
{}
DataStoreInfo(const nsAString& aName,
const nsAString& aOriginURL,
const nsAString& aManifestURL,
bool aReadOnly,
bool aEnabled)
{
Init(aName, aOriginURL, aManifestURL, aReadOnly, aEnabled);
}
void Init(const nsAString& aName,
const nsAString& aOriginURL,
const nsAString& aManifestURL,
bool aReadOnly,
bool aEnabled)
{
mName = aName;
mOriginURL = aOriginURL;
mManifestURL = aManifestURL;
mReadOnly = aReadOnly;
mEnabled = aEnabled;
}
void Update(const nsAString& aName,
const nsAString& aOriginURL,
const nsAString& aManifestURL,
bool aReadOnly)
{
mName = aName;
mOriginURL = aOriginURL;
mManifestURL = aManifestURL;
mReadOnly = aReadOnly;
}
void Enable()
{
mEnabled = true;
}
nsString mName;
nsString mOriginURL;
nsString mManifestURL;
bool mReadOnly;
// A DataStore is enabled when it has its first revision.
bool mEnabled;
};
namespace {
// Singleton for DataStoreService.
StaticRefPtr<DataStoreService> gDataStoreService;
static uint64_t gCounterID = 0;
typedef nsClassHashtable<nsUint32HashKey, DataStoreInfo> HashApp;
void
RejectPromise(nsPIDOMWindow* aWindow, Promise* aPromise, nsresult aRv)
{
MOZ_ASSERT(NS_IsMainThread());
MOZ_ASSERT(NS_FAILED(aRv));
nsRefPtr<DOMError> error;
if (aRv == NS_ERROR_DOM_SECURITY_ERR) {
error = new DOMError(aWindow, NS_LITERAL_STRING("SecurityError"),
NS_LITERAL_STRING("Access denied"));
} else {
error = new DOMError(aWindow, NS_LITERAL_STRING("InternalError"),
NS_LITERAL_STRING("An error occurred"));
}
aPromise->MaybeRejectBrokenly(error);
}
void
DeleteDatabase(const nsAString& aName,
const nsAString& aManifestURL)
{
MOZ_ASSERT(XRE_IsParentProcess() && NS_IsMainThread());
nsRefPtr<DataStoreDB> db = new DataStoreDB(aManifestURL, aName);
db->Delete();
}
PLDHashOperator
DeleteDataStoresAppEnumerator(
const uint32_t& aAppId,
nsAutoPtr<DataStoreInfo>& aInfo,
void* aUserData)
{
MOZ_ASSERT(XRE_IsParentProcess() && NS_IsMainThread());
auto* appId = static_cast<uint32_t*>(aUserData);
if (*appId != aAppId) {
return PL_DHASH_NEXT;
}
DeleteDatabase(aInfo->mName, aInfo->mManifestURL);
return PL_DHASH_REMOVE;
}
PLDHashOperator
DeleteDataStoresEnumerator(const nsAString& aName,
nsAutoPtr<HashApp>& aApps,
void* aUserData)
{
MOZ_ASSERT(XRE_IsParentProcess() && NS_IsMainThread());
aApps->Enumerate(DeleteDataStoresAppEnumerator, aUserData);
return aApps->Count() ? PL_DHASH_NEXT : PL_DHASH_REMOVE;
}
void
GeneratePermissionName(nsAString& aPermission,
const nsAString& aName,
const nsAString& aManifestURL)
{
aPermission.AssignLiteral("indexedDB-chrome-");
aPermission.Append(aName);
aPermission.Append('|');
aPermission.Append(aManifestURL);
}
nsresult
ResetPermission(uint32_t aAppId, const nsAString& aOriginURL,
const nsAString& aManifestURL,
const nsAString& aPermission,
bool aReadOnly)
{
MOZ_ASSERT(XRE_IsParentProcess() && NS_IsMainThread());
nsresult rv;
nsCOMPtr<nsIIOService> ioService(do_GetService(NS_IOSERVICE_CONTRACTID, &rv));
if (NS_WARN_IF(NS_FAILED(rv))) {
return rv;
}
nsCOMPtr<nsIURI> uri;
rv = ioService->NewURI(NS_ConvertUTF16toUTF8(aOriginURL), nullptr, nullptr,
getter_AddRefs(uri));
if (NS_WARN_IF(NS_FAILED(rv))) {
return rv;
}
nsIScriptSecurityManager* ssm = nsContentUtils::GetSecurityManager();
if (!ssm) {
return NS_ERROR_FAILURE;
}
nsCOMPtr<nsIPrincipal> principal;
rv = ssm->GetAppCodebasePrincipal(uri, aAppId, false,
getter_AddRefs(principal));
if (NS_WARN_IF(NS_FAILED(rv))) {
return rv;
}
nsCOMPtr<nsIPermissionManager> pm =
do_GetService(NS_PERMISSIONMANAGER_CONTRACTID);
if (!pm) {
return NS_ERROR_FAILURE;
}
nsCString basePermission;
basePermission.Append(NS_ConvertUTF16toUTF8(aPermission));
// Write permission
{
nsCString permission;
permission.Append(basePermission);
permission.AppendLiteral("-write");
uint32_t perm = nsIPermissionManager::UNKNOWN_ACTION;
rv = pm->TestExactPermissionFromPrincipal(principal, permission.get(),
&perm);
if (NS_WARN_IF(NS_FAILED(rv))) {
return rv;
}
if (aReadOnly && perm == nsIPermissionManager::ALLOW_ACTION) {
rv = pm->RemoveFromPrincipal(principal, permission.get());
}
else if (!aReadOnly && perm != nsIPermissionManager::ALLOW_ACTION) {
rv = pm->AddFromPrincipal(principal, permission.get(),
nsIPermissionManager::ALLOW_ACTION,
nsIPermissionManager::EXPIRE_NEVER, 0);
}
if (NS_WARN_IF(NS_FAILED(rv))) {
return rv;
}
}
// Read permission
{
nsCString permission;
permission.Append(basePermission);
permission.AppendLiteral("-read");
uint32_t perm = nsIPermissionManager::UNKNOWN_ACTION;
rv = pm->TestExactPermissionFromPrincipal(principal, permission.get(),
&perm);
if (NS_WARN_IF(NS_FAILED(rv))) {
return rv;
}
if (perm != nsIPermissionManager::ALLOW_ACTION) {
rv = pm->AddFromPrincipal(principal, permission.get(),
nsIPermissionManager::ALLOW_ACTION,
nsIPermissionManager::EXPIRE_NEVER, 0);
if (NS_WARN_IF(NS_FAILED(rv))) {
return rv;
}
}
}
// Generic permission
uint32_t perm = nsIPermissionManager::UNKNOWN_ACTION;
rv = pm->TestExactPermissionFromPrincipal(principal, basePermission.get(),
&perm);
if (NS_WARN_IF(NS_FAILED(rv))) {
return rv;
}
if (perm != nsIPermissionManager::ALLOW_ACTION) {
rv = pm->AddFromPrincipal(principal, basePermission.get(),
nsIPermissionManager::ALLOW_ACTION,
nsIPermissionManager::EXPIRE_NEVER, 0);
if (NS_WARN_IF(NS_FAILED(rv))) {
return rv;
}
}
return NS_OK;
}
class MOZ_STACK_CLASS GetDataStoreInfosData
{
public:
GetDataStoreInfosData(nsClassHashtable<nsStringHashKey, HashApp>& aAccessStores,
const nsAString& aName, const nsAString& aManifestURL,
uint32_t aAppId, nsTArray<DataStoreInfo>& aStores)
: mAccessStores(aAccessStores)
, mName(aName)
, mManifestURL(aManifestURL)
, mAppId(aAppId)
, mStores(aStores)
{}
nsClassHashtable<nsStringHashKey, HashApp>& mAccessStores;
nsString mName;
nsString mManifestURL;
uint32_t mAppId;
nsTArray<DataStoreInfo>& mStores;
};
PLDHashOperator
GetDataStoreInfosEnumerator(const uint32_t& aAppId,
DataStoreInfo* aInfo,
void* aUserData)
{
MOZ_ASSERT(XRE_IsParentProcess() && NS_IsMainThread());
auto* data = static_cast<GetDataStoreInfosData*>(aUserData);
if (aAppId == data->mAppId) {
return PL_DHASH_NEXT;
}
HashApp* apps;
if (!data->mAccessStores.Get(data->mName, &apps)) {
return PL_DHASH_NEXT;
}
if (!data->mManifestURL.IsEmpty() &&
!data->mManifestURL.Equals(aInfo->mManifestURL)) {
return PL_DHASH_NEXT;
}
DataStoreInfo* accessInfo = nullptr;
if (!apps->Get(data->mAppId, &accessInfo)) {
return PL_DHASH_NEXT;
}
bool readOnly = aInfo->mReadOnly || accessInfo->mReadOnly;
DataStoreInfo* accessStore = data->mStores.AppendElement();
accessStore->Init(aInfo->mName, aInfo->mOriginURL,
aInfo->mManifestURL, readOnly,
aInfo->mEnabled);
return PL_DHASH_NEXT;
}
PLDHashOperator
GetAppManifestURLsEnumerator(const uint32_t& aAppId,
DataStoreInfo* aInfo,
void* aUserData)
{
MOZ_ASSERT(XRE_IsParentProcess() && NS_IsMainThread());
auto* manifestURLs = static_cast<nsIMutableArray*>(aUserData);
nsCOMPtr<nsISupportsString> manifestURL(do_CreateInstance(NS_SUPPORTS_STRING_CONTRACTID));
if (manifestURL) {
manifestURL->SetData(aInfo->mManifestURL);
manifestURLs->AppendElement(manifestURL, false);
}
return PL_DHASH_NEXT;
}
// This class is useful to enumerate the add permissions for each app.
class MOZ_STACK_CLASS AddPermissionsData
{
public:
AddPermissionsData(const nsAString& aPermission, bool aReadOnly)
: mPermission(aPermission)
, mReadOnly(aReadOnly)
, mResult(NS_OK)
{}
nsString mPermission;
bool mReadOnly;
nsresult mResult;
};
PLDHashOperator
AddPermissionsEnumerator(const uint32_t& aAppId,
DataStoreInfo* aInfo,
void* userData)
{
MOZ_ASSERT(XRE_IsParentProcess() && NS_IsMainThread());
auto* data = static_cast<AddPermissionsData*>(userData);
// ReadOnly is decided by the owner first.
bool readOnly = data->mReadOnly || aInfo->mReadOnly;
data->mResult = ResetPermission(aAppId, aInfo->mOriginURL,
aInfo->mManifestURL,
data->mPermission,
readOnly);
return NS_FAILED(data->mResult) ? PL_DHASH_STOP : PL_DHASH_NEXT;
}
// This class is useful to enumerate the add permissions for each app.
class MOZ_STACK_CLASS AddAccessPermissionsData
{
public:
AddAccessPermissionsData(uint32_t aAppId, const nsAString& aName,
const nsAString& aOriginURL, bool aReadOnly)
: mAppId(aAppId)
, mName(aName)
, mOriginURL(aOriginURL)
, mReadOnly(aReadOnly)
, mResult(NS_OK)
{}
uint32_t mAppId;
nsString mName;
nsString mOriginURL;
bool mReadOnly;
nsresult mResult;
};
PLDHashOperator
AddAccessPermissionsEnumerator(const uint32_t& aAppId,
DataStoreInfo* aInfo,
void* userData)
{
MOZ_ASSERT(XRE_IsParentProcess() && NS_IsMainThread());
auto* data = static_cast<AddAccessPermissionsData*>(userData);
nsString permission;
GeneratePermissionName(permission, data->mName, aInfo->mManifestURL);
// ReadOnly is decided by the owner first.
bool readOnly = aInfo->mReadOnly || data->mReadOnly;
data->mResult = ResetPermission(data->mAppId, data->mOriginURL,
aInfo->mManifestURL,
permission, readOnly);
return NS_FAILED(data->mResult) ? PL_DHASH_STOP : PL_DHASH_NEXT;
}
} /* anonymous namespace */
// A PendingRequest is created when a content code wants a list of DataStores
// but some of them are not enabled yet.
class PendingRequest
{
public:
void Init(nsPIDOMWindow* aWindow, Promise* aPromise,
const nsTArray<DataStoreInfo>& aStores,
const nsTArray<nsString>& aPendingDataStores)
{
mWindow = aWindow;
mPromise = aPromise;
mStores = aStores;
mPendingDataStores = aPendingDataStores;
}
nsCOMPtr<nsPIDOMWindow> mWindow;
nsRefPtr<Promise> mPromise;
nsTArray<DataStoreInfo> mStores;
// This array contains the list of manifestURLs of the DataStores that are
// not enabled yet.
nsTArray<nsString> mPendingDataStores;
};
// This callback is used to enable a DataStore when its first revisionID is
// created.
class RevisionAddedEnableStoreCallback final :
public DataStoreRevisionCallback
{
private:
~RevisionAddedEnableStoreCallback() {}
public:
NS_INLINE_DECL_REFCOUNTING(RevisionAddedEnableStoreCallback);
RevisionAddedEnableStoreCallback(uint32_t aAppId,
const nsAString& aName,
const nsAString& aManifestURL)
: mAppId(aAppId)
, mName(aName)
, mManifestURL(aManifestURL)
{
MOZ_ASSERT(XRE_IsParentProcess() && NS_IsMainThread());
}
void
Run(const nsAString& aRevisionId)
{
MOZ_ASSERT(XRE_IsParentProcess() && NS_IsMainThread());
nsRefPtr<DataStoreService> service = DataStoreService::Get();
MOZ_ASSERT(service);
service->EnableDataStore(mAppId, mName, mManifestURL);
}
private:
uint32_t mAppId;
nsString mName;
nsString mManifestURL;
};
// This DataStoreDBCallback is called when DataStoreDB opens the DataStore DB.
// Then the first revision will be created if it's needed.
class FirstRevisionIdCallback final : public DataStoreDBCallback
, public nsIDOMEventListener
{
public:
NS_DECL_ISUPPORTS
FirstRevisionIdCallback(uint32_t aAppId, const nsAString& aName,
const nsAString& aManifestURL)
: mAppId(aAppId)
, mName(aName)
, mManifestURL(aManifestURL)
{
MOZ_ASSERT(XRE_IsParentProcess() && NS_IsMainThread());
}
void
Run(DataStoreDB* aDb, RunStatus aStatus) override
{
MOZ_ASSERT(XRE_IsParentProcess() && NS_IsMainThread());
MOZ_ASSERT(aDb);
if (aStatus == Error) {
NS_WARNING("Failed to create the first revision.");
return;
}
ErrorResult error;
if (aStatus == Success) {
mTxn = aDb->Transaction();
nsRefPtr<IDBObjectStore> store =
mTxn->ObjectStore(NS_LITERAL_STRING(DATASTOREDB_REVISION), error);
if (NS_WARN_IF(error.Failed())) {
return;
}
AutoSafeJSContext cx;
mRequest = store->OpenCursor(cx, JS::UndefinedHandleValue,
IDBCursorDirection::Prev, error);
if (NS_WARN_IF(error.Failed())) {
return;
}
nsresult rv;
rv = mRequest->EventTarget::AddEventListener(NS_LITERAL_STRING("success"),
this, false);
if (NS_FAILED(rv)) {
NS_WARNING("Failed to add an EventListener.");
return;
}
return;
}
// The DB has just been created.
error = CreateFirstRevision(aDb->Transaction());
if (error.Failed()) {
NS_WARNING("Failed to add a revision to a DataStore.");
}
}
nsresult
CreateFirstRevision(IDBTransaction* aTxn)
{
MOZ_ASSERT(aTxn);
ErrorResult error;
nsRefPtr<IDBObjectStore> store =
aTxn->ObjectStore(NS_LITERAL_STRING(DATASTOREDB_REVISION), error);
if (NS_WARN_IF(error.Failed())) {
return error.StealNSResult();
}
MOZ_ASSERT(store);
nsRefPtr<RevisionAddedEnableStoreCallback> callback =
new RevisionAddedEnableStoreCallback(mAppId, mName, mManifestURL);
// Note: this cx is only used for rooting and AddRevision, neither of which
// actually care which compartment we're in.
AutoSafeJSContext cx;
// If the revision doesn't exist, let's create it.
nsRefPtr<DataStoreRevision> revision = new DataStoreRevision();
nsresult rv = revision->AddRevision(cx, store, 0,
DataStoreRevision::RevisionVoid,
callback);
if (NS_WARN_IF(NS_FAILED(rv))) {
return rv;
}
return NS_OK;
}
// nsIDOMEventListener
NS_IMETHOD
HandleEvent(nsIDOMEvent* aEvent) override
{
MOZ_ASSERT(XRE_IsParentProcess() && NS_IsMainThread());
nsRefPtr<IDBRequest> request;
request.swap(mRequest);
nsRefPtr<IDBTransaction> txn;
txn.swap(mTxn);
request->RemoveEventListener(NS_LITERAL_STRING("success"), this, false);
nsString type;
nsresult rv = aEvent->GetType(type);
if (NS_WARN_IF(NS_FAILED(rv))) {
return rv;
}
#ifdef DEBUG
MOZ_ASSERT(type.EqualsASCII("success"));
#endif
AutoSafeJSContext cx;
ErrorResult error;
JS::Rooted<JS::Value> result(cx);
request->GetResult(cx, &result, error);
if (NS_WARN_IF(error.Failed())) {
return error.StealNSResult();
}
// This means that the content is a IDBCursor, so the first revision already
// exists.
if (result.isObject()) {
#ifdef DEBUG
IDBCursor* cursor = nullptr;
error = UNWRAP_OBJECT(IDBCursor, &result.toObject(), cursor);
MOZ_ASSERT(!error.Failed());
#endif
nsRefPtr<DataStoreService> service = DataStoreService::Get();
MOZ_ASSERT(service);
return service->EnableDataStore(mAppId, mName, mManifestURL);
}
rv = CreateFirstRevision(txn);
if (NS_WARN_IF(NS_FAILED(rv))) {
return rv;
}
return NS_OK;
}
private:
~FirstRevisionIdCallback() {}
nsRefPtr<IDBRequest> mRequest;
nsRefPtr<IDBTransaction> mTxn;
uint32_t mAppId;
nsString mName;
nsString mManifestURL;
};
NS_IMPL_ISUPPORTS(FirstRevisionIdCallback, nsIDOMEventListener)
// This class calls the 'retrieveRevisionId' method of the DataStore object for
// any DataStore in the 'mResults' array. When all of them are called, the
// promise is resolved with 'mResults'.
// The reson why this has to be done is because DataStore are object that can be
// created in any thread and in any process. The first revision has been
// created, but they don't know its value yet.
class RetrieveRevisionsCounter
{
private:
~RetrieveRevisionsCounter() {}
public:
NS_INLINE_DECL_REFCOUNTING(RetrieveRevisionsCounter);
RetrieveRevisionsCounter(uint32_t aId, Promise* aPromise, uint32_t aCount)
: mPromise(aPromise)
, mId(aId)
, mCount(aCount)
{
MOZ_ASSERT(NS_IsMainThread());
}
void
AppendDataStore(JSContext* aCx, DataStore* aDataStore,
nsIDataStore* aDataStoreIf)
{
MOZ_ASSERT(NS_IsMainThread());
mResults.AppendElement(aDataStore);
// DataStore will run this callback when the revisionID is retrieved.
JSFunction* func = js::NewFunctionWithReserved(aCx, JSCallback,
0 /* nargs */, 0 /* flags */,
nullptr);
if (!func) {
return;
}
JS::Rooted<JSObject*> obj(aCx, JS_GetFunctionObject(func));
if (!obj) {
return;
}
// We use the ID to know which counter is this. The service keeps all of
// these counters alive with their own IDs in an hashtable.
js::SetFunctionNativeReserved(obj, 0, JS::Int32Value(mId));
JS::Rooted<JS::Value> value(aCx, JS::ObjectValue(*obj));
nsresult rv = aDataStoreIf->RetrieveRevisionId(value);
if (NS_WARN_IF(NS_FAILED(rv))) {
return;
}
}
private:
static bool
JSCallback(JSContext* aCx, unsigned aArgc, JS::Value* aVp)
{
MOZ_ASSERT(NS_IsMainThread());
JS::CallArgs args = CallArgsFromVp(aArgc, aVp);
JS::Rooted<JS::Value> value(aCx,
js::GetFunctionNativeReserved(&args.callee(), 0));
uint32_t id = value.toInt32();
nsRefPtr<DataStoreService> service = DataStoreService::Get();
MOZ_ASSERT(service);
nsRefPtr<RetrieveRevisionsCounter> counter = service->GetCounter(id);
MOZ_ASSERT(counter);
// When all the callbacks are called, we can resolve the promise and remove
// the counter from the service.
--counter->mCount;
if (!counter->mCount) {
service->RemoveCounter(id);
counter->mPromise->MaybeResolve(counter->mResults);
}
return true;
}
nsRefPtr<Promise> mPromise;
nsTArray<nsRefPtr<DataStore>> mResults;
uint32_t mId;
uint32_t mCount;
};
/* static */ already_AddRefed<DataStoreService>
DataStoreService::GetOrCreate()
{
MOZ_ASSERT(NS_IsMainThread());
if (!gDataStoreService) {
nsRefPtr<DataStoreService> service = new DataStoreService();
if (NS_WARN_IF(NS_FAILED(service->Init()))) {
return nullptr;
}
gDataStoreService = service;
}
nsRefPtr<DataStoreService> service = gDataStoreService.get();
return service.forget();
}
/* static */ already_AddRefed<DataStoreService>
DataStoreService::Get()
{
MOZ_ASSERT(NS_IsMainThread());
nsRefPtr<DataStoreService> service = gDataStoreService.get();
return service.forget();
}
/* static */ void
DataStoreService::Shutdown()
{
MOZ_ASSERT(NS_IsMainThread());
if (gDataStoreService) {
if (XRE_IsParentProcess()) {
nsCOMPtr<nsIObserverService> obs = mozilla::services::GetObserverService();
if (obs) {
obs->RemoveObserver(gDataStoreService, "webapps-clear-data");
}
}
gDataStoreService = nullptr;
}
}
NS_INTERFACE_MAP_BEGIN(DataStoreService)
NS_INTERFACE_MAP_ENTRY_AMBIGUOUS(nsISupports, nsIDataStoreService)
NS_INTERFACE_MAP_ENTRY(nsIDataStoreService)
NS_INTERFACE_MAP_ENTRY(nsIObserver)
NS_INTERFACE_MAP_END
NS_IMPL_ADDREF(DataStoreService)
NS_IMPL_RELEASE(DataStoreService)
DataStoreService::DataStoreService()
{
MOZ_ASSERT(NS_IsMainThread());
}
DataStoreService::~DataStoreService()
{
MOZ_ASSERT(NS_IsMainThread());
}
nsresult
DataStoreService::Init()
{
if (!XRE_IsParentProcess()) {
return NS_OK;
}
nsCOMPtr<nsIObserverService> obs = mozilla::services::GetObserverService();
if (!obs) {
return NS_ERROR_FAILURE;
}
nsresult rv = obs->AddObserver(this, "webapps-clear-data", false);
if (NS_WARN_IF(NS_FAILED(rv))) {
return rv;
}
return NS_OK;
}
NS_IMETHODIMP
DataStoreService::InstallDataStore(uint32_t aAppId,
const nsAString& aName,
const nsAString& aOriginURL,
const nsAString& aManifestURL,
bool aReadOnly)
{
ASSERT_PARENT_PROCESS()
MOZ_ASSERT(NS_IsMainThread());
HashApp* apps = nullptr;
if (!mStores.Get(aName, &apps)) {
apps = new HashApp();
mStores.Put(aName, apps);
}
DataStoreInfo* info = nullptr;
if (!apps->Get(aAppId, &info)) {
info = new DataStoreInfo(aName, aOriginURL, aManifestURL, aReadOnly, false);
apps->Put(aAppId, info);
} else {
info->Update(aName, aOriginURL, aManifestURL, aReadOnly);
}
nsresult rv = AddPermissions(aAppId, aName, aOriginURL, aManifestURL,
aReadOnly);
if (NS_WARN_IF(NS_FAILED(rv))) {
return rv;
}
// Immediately create the first revision.
return CreateFirstRevisionId(aAppId, aName, aManifestURL);
}
NS_IMETHODIMP
DataStoreService::InstallAccessDataStore(uint32_t aAppId,
const nsAString& aName,
const nsAString& aOriginURL,
const nsAString& aManifestURL,
bool aReadOnly)
{
ASSERT_PARENT_PROCESS()
MOZ_ASSERT(NS_IsMainThread());
HashApp* apps = nullptr;
if (!mAccessStores.Get(aName, &apps)) {
apps = new HashApp();
mAccessStores.Put(aName, apps);
}
DataStoreInfo* info = nullptr;
if (!apps->Get(aAppId, &info)) {
info = new DataStoreInfo(aName, aOriginURL, aManifestURL, aReadOnly, false);
apps->Put(aAppId, info);
} else {
info->Update(aName, aOriginURL, aManifestURL, aReadOnly);
}
return AddAccessPermissions(aAppId, aName, aOriginURL, aManifestURL,
aReadOnly);
}
NS_IMETHODIMP
DataStoreService::GetDataStores(nsIDOMWindow* aWindow,
const nsAString& aName,
const nsAString& aOwner,
nsISupports** aDataStores)
{
// FIXME This will be a thread-safe method.
MOZ_ASSERT(NS_IsMainThread());
nsCOMPtr<nsPIDOMWindow> window = do_QueryInterface(aWindow);
if (!window) {
return NS_ERROR_FAILURE;
}
nsCOMPtr<nsIGlobalObject> global = do_QueryInterface(window);
ErrorResult rv;
nsRefPtr<Promise> promise = Promise::Create(global, rv);
if (rv.Failed()) {
return rv.StealNSResult();
}
nsCOMPtr<nsIDocument> document = window->GetDoc();
MOZ_ASSERT(document);
nsCOMPtr<nsIPrincipal> principal = document->NodePrincipal();
MOZ_ASSERT(principal);
nsTArray<DataStoreInfo> stores;
// If this request comes from the main process, we have access to the
// window, so we can skip the ipc communication.
if (XRE_IsParentProcess()) {
uint32_t appId;
nsresult rv = principal->GetAppId(&appId);
if (NS_FAILED(rv)) {
RejectPromise(window, promise, rv);
promise.forget(aDataStores);
return NS_OK;
}
rv = GetDataStoreInfos(aName, aOwner, appId, principal, stores);
if (NS_FAILED(rv)) {
RejectPromise(window, promise, rv);
promise.forget(aDataStores);
return NS_OK;
}
}
else {
// This method can be called in the child so we need to send a request
// to the parent and create DataStore object here.
ContentChild* contentChild = ContentChild::GetSingleton();
nsTArray<DataStoreSetting> array;
if (!contentChild->SendDataStoreGetStores(nsAutoString(aName),
nsAutoString(aOwner),
IPC::Principal(principal),
&array)) {
RejectPromise(window, promise, NS_ERROR_FAILURE);
promise.forget(aDataStores);
return NS_OK;
}
for (uint32_t i = 0; i < array.Length(); ++i) {
DataStoreInfo* info = stores.AppendElement();
info->Init(array[i].name(), array[i].originURL(),
array[i].manifestURL(), array[i].readOnly(),
array[i].enabled());
}
}
GetDataStoresCreate(window, promise, stores);
promise.forget(aDataStores);
return NS_OK;
}
void
DataStoreService::GetDataStoresCreate(nsPIDOMWindow* aWindow, Promise* aPromise,
const nsTArray<DataStoreInfo>& aStores)
{
MOZ_ASSERT(NS_IsMainThread());
if (!aStores.Length()) {
GetDataStoresResolve(aWindow, aPromise, aStores);
return;
}
nsTArray<nsString> pendingDataStores;
for (uint32_t i = 0; i < aStores.Length(); ++i) {
if (!aStores[i].mEnabled) {
pendingDataStores.AppendElement(aStores[i].mManifestURL);
}
}
if (!pendingDataStores.Length()) {
GetDataStoresResolve(aWindow, aPromise, aStores);
return;
}
PendingRequests* requests;
if (!mPendingRequests.Get(aStores[0].mName, &requests)) {
requests = new PendingRequests();
mPendingRequests.Put(aStores[0].mName, requests);
}
PendingRequest* request = requests->AppendElement();
request->Init(aWindow, aPromise, aStores, pendingDataStores);
}
void
DataStoreService::GetDataStoresResolve(nsPIDOMWindow* aWindow,
Promise* aPromise,
const nsTArray<DataStoreInfo>& aStores)
{
MOZ_ASSERT(NS_IsMainThread());
if (!aStores.Length()) {
nsTArray<nsRefPtr<DataStore>> results;
aPromise->MaybeResolve(results);
return;
}
AutoSafeJSContext cx;
// The counter will finish this task once all the DataStores will know their
// first revision Ids.
nsRefPtr<RetrieveRevisionsCounter> counter =
new RetrieveRevisionsCounter(++gCounterID, aPromise, aStores.Length());
mPendingCounters.Put(gCounterID, counter);
for (uint32_t i = 0; i < aStores.Length(); ++i) {
nsCOMPtr<nsIDataStore> dataStore =
do_CreateInstance("@mozilla.org/dom/datastore;1");
if (NS_WARN_IF(!dataStore)) {
return;
}
nsresult rv = dataStore->Init(aWindow, aStores[i].mName,
aStores[i].mManifestURL,
aStores[i].mReadOnly);
if (NS_WARN_IF(NS_FAILED(rv))) {
return;
}
nsCOMPtr<nsIXPConnectWrappedJS> xpcwrappedjs = do_QueryInterface(dataStore);
if (NS_WARN_IF(!xpcwrappedjs)) {
return;
}
JS::Rooted<JSObject*> dataStoreJS(cx, xpcwrappedjs->GetJSObject());
if (NS_WARN_IF(!dataStoreJS)) {
return;
}
nsCOMPtr<nsIGlobalObject> global = do_QueryInterface(aWindow);
MOZ_ASSERT(global);
JSAutoCompartment ac(cx, dataStoreJS);
nsRefPtr<DataStoreImpl> dataStoreObj = new DataStoreImpl(dataStoreJS,
global);
nsRefPtr<DataStore> exposedStore = new DataStore(aWindow);
ErrorResult error;
exposedStore->SetDataStoreImpl(*dataStoreObj, error);
if (error.Failed()) {
return;
}
JS::Rooted<JS::Value> exposedObject(cx);
if (!GetOrCreateDOMReflector(cx, exposedStore, &exposedObject)) {
JS_ClearPendingException(cx);
return;
}
dataStore->SetExposedObject(exposedObject);
counter->AppendDataStore(cx, exposedStore, dataStore);
}
}
// Thie method populates 'aStores' with the list of DataStores with 'aName' as
// name and available for this 'aAppId'.
nsresult
DataStoreService::GetDataStoreInfos(const nsAString& aName,
const nsAString& aOwner,
uint32_t aAppId,
nsIPrincipal* aPrincipal,
nsTArray<DataStoreInfo>& aStores)
{
MOZ_ASSERT(XRE_IsParentProcess() && NS_IsMainThread());
nsCOMPtr<nsIAppsService> appsService =
do_GetService("@mozilla.org/AppsService;1");
if (NS_WARN_IF(!appsService)) {
return NS_ERROR_FAILURE;
}
nsCOMPtr<mozIApplication> app;
nsresult rv = appsService->GetAppByLocalId(aAppId, getter_AddRefs(app));
if (NS_WARN_IF(NS_FAILED(rv))) {
return rv;
}
if (!app) {
return NS_ERROR_DOM_SECURITY_ERR;
}
if (!DataStoreService::CheckPermission(aPrincipal)) {
return NS_ERROR_DOM_SECURITY_ERR;
}
aStores.Clear();
HashApp* apps = nullptr;
if (!mStores.Get(aName, &apps)) {
return NS_OK;
}
DataStoreInfo* info = nullptr;
if (apps->Get(aAppId, &info) &&
(aOwner.IsEmpty() || aOwner.Equals(info->mManifestURL))) {
DataStoreInfo* owned = aStores.AppendElement();
owned->Init(info->mName, info->mOriginURL, info->mManifestURL, false,
info->mEnabled);
}
GetDataStoreInfosData data(mAccessStores, aName, aOwner, aAppId, aStores);
apps->EnumerateRead(GetDataStoreInfosEnumerator, &data);
return NS_OK;
}
NS_IMETHODIMP
DataStoreService::GetAppManifestURLsForDataStore(const nsAString& aName,
nsIArray** aManifestURLs)
{
ASSERT_PARENT_PROCESS()
MOZ_ASSERT(NS_IsMainThread());
nsCOMPtr<nsIMutableArray> manifestURLs = do_CreateInstance(NS_ARRAY_CONTRACTID);
if (!manifestURLs) {
return NS_ERROR_OUT_OF_MEMORY;
}
HashApp* apps = nullptr;
if (mStores.Get(aName, &apps)) {
apps->EnumerateRead(GetAppManifestURLsEnumerator, manifestURLs.get());
}
if (mAccessStores.Get(aName, &apps)) {
apps->EnumerateRead(GetAppManifestURLsEnumerator, manifestURLs.get());
}
manifestURLs.forget(aManifestURLs);
return NS_OK;
}
bool
DataStoreService::CheckPermission(nsIPrincipal* aPrincipal)
{
// First of all, the general pref has to be turned on.
bool enabled = false;
Preferences::GetBool("dom.datastore.enabled", &enabled);
if (!enabled) {
return false;
}
// Just for testing, we can enable DataStore for any kind of app.
if (Preferences::GetBool("dom.testing.datastore_enabled_for_hosted_apps", false)) {
return true;
}
if (!aPrincipal) {
return false;
}
uint16_t status;
if (NS_FAILED(aPrincipal->GetAppStatus(&status))) {
return false;
}
// Certified apps are always allowed.
if (status == nsIPrincipal::APP_STATUS_CERTIFIED) {
return true;
}
if (status != nsIPrincipal::APP_STATUS_PRIVILEGED) {
return false;
}
// Privileged apps are allowed if they are the homescreen.
nsAdoptingString homescreen =
Preferences::GetString("dom.mozApps.homescreenURL");
if (!homescreen) {
return false;
}
uint32_t appId;
nsresult rv = aPrincipal->GetAppId(&appId);
if (NS_WARN_IF(NS_FAILED(rv))) {
return false;
}
nsCOMPtr<nsIAppsService> appsService =
do_GetService("@mozilla.org/AppsService;1");
if (NS_WARN_IF(!appsService)) {
return false;
}
nsAutoString manifestURL;
rv = appsService->GetManifestURLByLocalId(appId, manifestURL);
if (NS_WARN_IF(NS_FAILED(rv))) {
return false;
}
return manifestURL.Equals(homescreen);
}
NS_IMETHODIMP
DataStoreService::CheckPermission(nsIPrincipal* aPrincipal,
bool* aResult)
{
MOZ_ASSERT(NS_IsMainThread());
*aResult = DataStoreService::CheckPermission(aPrincipal);
return NS_OK;
}
// This method is called when an app with DataStores is deleted.
void
DataStoreService::DeleteDataStores(uint32_t aAppId)
{
MOZ_ASSERT(XRE_IsParentProcess() && NS_IsMainThread());
mStores.Enumerate(DeleteDataStoresEnumerator, &aAppId);
mAccessStores.Enumerate(DeleteDataStoresEnumerator, &aAppId);
}
NS_IMETHODIMP
DataStoreService::Observe(nsISupports* aSubject,
const char* aTopic,
const char16_t* aData)
{
MOZ_ASSERT(XRE_IsParentProcess() && NS_IsMainThread());
if (strcmp(aTopic, "webapps-clear-data")) {
return NS_OK;
}
nsCOMPtr<mozIApplicationClearPrivateDataParams> params =
do_QueryInterface(aSubject);
MOZ_ASSERT(params);
// DataStore is explosed to apps, not browser content.
bool browserOnly;
nsresult rv = params->GetBrowserOnly(&browserOnly);
if (NS_WARN_IF(NS_FAILED(rv))) {
return rv;
}
if (browserOnly) {
return NS_OK;
}
uint32_t appId;
rv = params->GetAppId(&appId);
if (NS_WARN_IF(NS_FAILED(rv))) {
return rv;
}
DeleteDataStores(appId);
return NS_OK;
}
nsresult
DataStoreService::AddPermissions(uint32_t aAppId,
const nsAString& aName,
const nsAString& aOriginURL,
const nsAString& aManifestURL,
bool aReadOnly)
{
MOZ_ASSERT(XRE_IsParentProcess() && NS_IsMainThread());
// This is the permission name.
nsString permission;
GeneratePermissionName(permission, aName, aManifestURL);
// When a new DataStore is installed, the permissions must be set for the
// owner app.
nsresult rv = ResetPermission(aAppId, aOriginURL, aManifestURL, permission,
aReadOnly);
if (NS_WARN_IF(NS_FAILED(rv))) {
return rv;
}
// For any app that wants to have access to this DataStore we add the
// permissions.
HashApp* apps;
if (!mAccessStores.Get(aName, &apps)) {
return NS_OK;
}
AddPermissionsData data(permission, aReadOnly);
apps->EnumerateRead(AddPermissionsEnumerator, &data);
return data.mResult;
}
nsresult
DataStoreService::AddAccessPermissions(uint32_t aAppId, const nsAString& aName,
const nsAString& aOriginURL,
const nsAString& aManifestURL,
bool aReadOnly)
{
MOZ_ASSERT(XRE_IsParentProcess() && NS_IsMainThread());
// When an app wants to have access to a DataStore, the permissions must be
// set.
HashApp* apps = nullptr;
if (!mStores.Get(aName, &apps)) {
return NS_OK;
}
AddAccessPermissionsData data(aAppId, aName, aOriginURL, aReadOnly);
apps->EnumerateRead(AddAccessPermissionsEnumerator, &data);
return data.mResult;
}
// This method starts the operation to create the first revision for a DataStore
// if needed.
nsresult
DataStoreService::CreateFirstRevisionId(uint32_t aAppId,
const nsAString& aName,
const nsAString& aManifestURL)
{
MOZ_ASSERT(XRE_IsParentProcess() && NS_IsMainThread());
nsRefPtr<DataStoreDB> db = new DataStoreDB(aManifestURL, aName);
nsRefPtr<FirstRevisionIdCallback> callback =
new FirstRevisionIdCallback(aAppId, aName, aManifestURL);
Sequence<nsString> dbs;
if (!dbs.AppendElement(NS_LITERAL_STRING(DATASTOREDB_REVISION), fallible)) {
return NS_ERROR_OUT_OF_MEMORY;
}
return db->Open(IDBTransactionMode::Readwrite, dbs, callback);
}
nsresult
DataStoreService::EnableDataStore(uint32_t aAppId, const nsAString& aName,
const nsAString& aManifestURL)
{
MOZ_ASSERT(NS_IsMainThread());
{
HashApp* apps = nullptr;
DataStoreInfo* info = nullptr;
if (mStores.Get(aName, &apps) && apps->Get(aAppId, &info)) {
info->Enable();
}
}
// Notify the child processes.
if (XRE_IsParentProcess()) {
nsTArray<ContentParent*> children;
ContentParent::GetAll(children);
for (uint32_t i = 0; i < children.Length(); i++) {
if (children[i]->NeedsDataStoreInfos()) {
unused << children[i]->SendDataStoreNotify(aAppId, nsAutoString(aName),
nsAutoString(aManifestURL));
}
}
}
// Maybe we have some pending request waiting for this DataStore.
PendingRequests* requests;
if (!mPendingRequests.Get(aName, &requests)) {
return NS_OK;
}
for (uint32_t i = 0; i < requests->Length();) {
PendingRequest& request = requests->ElementAt(i);
nsTArray<nsString>::index_type pos =
request.mPendingDataStores.IndexOf(aManifestURL);
if (pos != request.mPendingDataStores.NoIndex) {
request.mPendingDataStores.RemoveElementAt(pos);
// No other pending dataStores.
if (request.mPendingDataStores.IsEmpty()) {
GetDataStoresResolve(request.mWindow, request.mPromise,
request.mStores);
requests->RemoveElementAt(i);
continue;
}
}
++i;
}
// No other pending requests for this name.
if (requests->IsEmpty()) {
mPendingRequests.Remove(aName);
}
return NS_OK;
}
already_AddRefed<RetrieveRevisionsCounter>
DataStoreService::GetCounter(uint32_t aId) const
{
MOZ_ASSERT(NS_IsMainThread());
nsRefPtr<RetrieveRevisionsCounter> counter;
return mPendingCounters.Get(aId, getter_AddRefs(counter))
? counter.forget() : nullptr;
}
void
DataStoreService::RemoveCounter(uint32_t aId)
{
MOZ_ASSERT(NS_IsMainThread());
mPendingCounters.Remove(aId);
}
nsresult
DataStoreService::GetDataStoresFromIPC(const nsAString& aName,
const nsAString& aOwner,
nsIPrincipal* aPrincipal,
nsTArray<DataStoreSetting>* aValue)
{
MOZ_ASSERT(XRE_IsParentProcess() && NS_IsMainThread());
uint32_t appId;
nsresult rv = aPrincipal->GetAppId(&appId);
if (NS_WARN_IF(NS_FAILED(rv))) {
return rv;
}
nsTArray<DataStoreInfo> stores;
rv = GetDataStoreInfos(aName, aOwner, appId, aPrincipal, stores);
if (NS_WARN_IF(NS_FAILED(rv))) {
return rv;
}
for (uint32_t i = 0; i < stores.Length(); ++i) {
DataStoreSetting* data = aValue->AppendElement();
data->name() = stores[i].mName;
data->originURL() = stores[i].mOriginURL;
data->manifestURL() = stores[i].mManifestURL;
data->readOnly() = stores[i].mReadOnly;
data->enabled() = stores[i].mEnabled;
}
return NS_OK;
}
nsresult
DataStoreService::GenerateUUID(nsAString& aID)
{
nsresult rv;
if (!mUUIDGenerator) {
mUUIDGenerator = do_GetService("@mozilla.org/uuid-generator;1", &rv);
if (NS_WARN_IF(NS_FAILED(rv))) {
return rv;
}
}
nsID id;
rv = mUUIDGenerator->GenerateUUIDInPlace(&id);
if (NS_WARN_IF(NS_FAILED(rv))) {
return rv;
}
char chars[NSID_LENGTH];
id.ToProvidedString(chars);
CopyASCIItoUTF16(chars, aID);
return NS_OK;
}
} // namespace dom
} // namespace mozilla
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