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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 "FontFaceSetWorkerImpl.h"
#include "mozilla/FontLoaderUtils.h"
#include "mozilla/dom/WorkerPrivate.h"
#include "mozilla/dom/WorkerRef.h"
#include "mozilla/dom/WorkerRunnable.h"
#include "mozilla/LoadInfo.h"
#include "nsContentPolicyUtils.h"
#include "nsFontFaceLoader.h"
#include "nsINetworkPredictor.h"
#include "nsIWebNavigation.h"
using namespace mozilla;
using namespace mozilla::css;
namespace mozilla::dom {
#define LOG(...) \
MOZ_LOG(gfxUserFontSet::GetUserFontsLog(), mozilla::LogLevel::Debug, \
(__VA_ARGS__))
#define LOG_ENABLED() \
MOZ_LOG_TEST(gfxUserFontSet::GetUserFontsLog(), LogLevel::Debug)
NS_IMPL_ISUPPORTS_INHERITED0(FontFaceSetWorkerImpl, FontFaceSetImpl);
FontFaceSetWorkerImpl::FontFaceSetWorkerImpl(FontFaceSet* aOwner)
: FontFaceSetImpl(aOwner) {}
FontFaceSetWorkerImpl::~FontFaceSetWorkerImpl() = default;
bool FontFaceSetWorkerImpl::Initialize(WorkerPrivate* aWorkerPrivate) {
MOZ_ASSERT(aWorkerPrivate);
RefPtr<StrongWorkerRef> workerRef =
StrongWorkerRef::Create(aWorkerPrivate, "FontFaceSetWorkerImpl",
[self = RefPtr{this}] { self->Destroy(); });
if (NS_WARN_IF(!workerRef)) {
return false;
}
{
RecursiveMutexAutoLock lock(mMutex);
mWorkerRef = new ThreadSafeWorkerRef(workerRef);
}
class InitRunnable final : public WorkerMainThreadRunnable {
public:
InitRunnable(WorkerPrivate* aWorkerPrivate, FontFaceSetWorkerImpl* aImpl)
: WorkerMainThreadRunnable(aWorkerPrivate,
"FontFaceSetWorkerImpl :: Initialize"_ns),
mImpl(aImpl) {}
protected:
~InitRunnable() override = default;
bool MainThreadRun() override {
mImpl->InitializeOnMainThread();
return true;
}
FontFaceSetWorkerImpl* mImpl;
};
IgnoredErrorResult rv;
auto runnable = MakeRefPtr<InitRunnable>(aWorkerPrivate, this);
runnable->Dispatch(Canceling, rv);
return !NS_WARN_IF(rv.Failed());
}
void FontFaceSetWorkerImpl::InitializeOnMainThread() {
MOZ_ASSERT(NS_IsMainThread());
RecursiveMutexAutoLock lock(mMutex);
if (!mWorkerRef) {
return;
}
WorkerPrivate* workerPrivate = mWorkerRef->Private();
nsIPrincipal* principal = workerPrivate->GetPrincipal();
nsIPrincipal* loadingPrincipal = workerPrivate->GetLoadingPrincipal();
nsIPrincipal* partitionedPrincipal = workerPrivate->GetPartitionedPrincipal();
nsIPrincipal* defaultPrincipal = principal ? principal : loadingPrincipal;
nsLoadFlags loadFlags = workerPrivate->GetLoadFlags();
uint32_t loadType = 0;
// Get the top-level worker.
WorkerPrivate* topWorkerPrivate = workerPrivate;
WorkerPrivate* parent = workerPrivate->GetParent();
while (parent) {
topWorkerPrivate = parent;
parent = topWorkerPrivate->GetParent();
}
// If the top-level worker is a dedicated worker and has a window, and the
// window has a docshell, the caching behavior of this worker should match
// that of that docshell. This matches the behaviour from
// WorkerScriptLoader::LoadScript.
if (topWorkerPrivate->IsDedicatedWorker()) {
nsCOMPtr<nsPIDOMWindowInner> window = topWorkerPrivate->GetWindow();
if (window) {
nsCOMPtr<nsIDocShell> docShell = window->GetDocShell();
if (docShell) {
docShell->GetDefaultLoadFlags(&loadFlags);
docShell->GetLoadType(&loadType);
}
}
}
// Record the state of the "bypass cache" flags now. In theory the load type
// of a docshell could change after the document is loaded, but handling that
// doesn't seem too important. This matches the behaviour from
// FontFaceSetDocumentImpl::Initialize.
mBypassCache =
((loadType >> 16) & nsIWebNavigation::LOAD_FLAGS_BYPASS_CACHE) ||
(loadFlags & nsIRequest::LOAD_BYPASS_CACHE);
// Same for the "private browsing" flag.
if (defaultPrincipal) {
mPrivateBrowsing = defaultPrincipal->GetPrivateBrowsingId() > 0;
}
mStandardFontLoadPrincipal =
MakeRefPtr<gfxFontSrcPrincipal>(defaultPrincipal, partitionedPrincipal);
mURLExtraData =
new URLExtraData(workerPrivate->GetBaseURI(),
workerPrivate->GetReferrerInfo(), defaultPrincipal);
}
void FontFaceSetWorkerImpl::Destroy() {
RecursiveMutexAutoLock lock(mMutex);
mWorkerRef = nullptr;
FontFaceSetImpl::Destroy();
}
bool FontFaceSetWorkerImpl::IsOnOwningThread() {
RecursiveMutexAutoLock lock(mMutex);
if (!mWorkerRef) {
return false;
}
return mWorkerRef->Private()->IsOnCurrentThread();
}
#ifdef DEBUG
void FontFaceSetWorkerImpl::AssertIsOnOwningThread() {
RecursiveMutexAutoLock lock(mMutex);
if (mWorkerRef) {
MOZ_ASSERT(mWorkerRef->Private()->IsOnCurrentThread());
} else {
// Asserting during cycle collection if we are tearing down the worker is
// difficult. The only other thread that uses FontFace(Set)Impl objects is
// the main thread (if created from a worker).
MOZ_ASSERT(!NS_IsMainThread());
}
}
#endif
void FontFaceSetWorkerImpl::DispatchToOwningThread(
const char* aName, std::function<void()>&& aFunc) {
RecursiveMutexAutoLock lock(mMutex);
if (!mWorkerRef) {
return;
}
WorkerPrivate* workerPrivate = mWorkerRef->Private();
if (workerPrivate->IsOnCurrentThread()) {
NS_DispatchToCurrentThread(
NS_NewCancelableRunnableFunction(aName, std::move(aFunc)));
return;
}
class FontFaceSetWorkerRunnable final : public WorkerThreadRunnable {
public:
FontFaceSetWorkerRunnable(WorkerPrivate* aWorkerPrivate,
std::function<void()>&& aFunc)
: WorkerThreadRunnable("FontFaceSetWorkerRunnable"),
mFunc(std::move(aFunc)) {}
bool WorkerRun(JSContext* aCx, WorkerPrivate* aWorkerPrivate) override {
mFunc();
return true;
}
private:
std::function<void()> mFunc;
};
auto runnable =
MakeRefPtr<FontFaceSetWorkerRunnable>(workerPrivate, std::move(aFunc));
runnable->Dispatch(workerPrivate);
}
uint64_t FontFaceSetWorkerImpl::GetInnerWindowID() {
RecursiveMutexAutoLock lock(mMutex);
if (!mWorkerRef) {
return 0;
}
return mWorkerRef->Private()->WindowID();
}
void FontFaceSetWorkerImpl::FlushUserFontSet() {
RecursiveMutexAutoLock lock(mMutex);
// If there was a change to the mNonRuleFaces array, then there could
// have been a modification to the user font set.
const bool modified = mNonRuleFacesDirty;
mNonRuleFacesDirty = false;
for (size_t i = 0, i_end = mNonRuleFaces.Length(); i < i_end; ++i) {
InsertNonRuleFontFace(mNonRuleFaces[i].mFontFace);
}
// Remove any residual families that have no font entries.
for (auto it = mFontFamilies.Iter(); !it.Done(); it.Next()) {
if (!it.Data()->FontListLength()) {
it.Remove();
}
}
if (modified) {
IncrementGenerationLocked(true);
mHasLoadingFontFacesIsDirty = true;
CheckLoadingStarted();
CheckLoadingFinished();
}
}
already_AddRefed<gfxUserFontFamily> FontFaceSetWorkerImpl::LookupFamily(
const nsACString& aName) const {
RecursiveMutexAutoLock lock(mMutex);
return gfxUserFontSet::LookupFamily(aName);
}
nsresult FontFaceSetWorkerImpl::StartLoad(gfxUserFontEntry* aUserFontEntry,
uint32_t aSrcIndex) {
RecursiveMutexAutoLock lock(mMutex);
if (NS_WARN_IF(!mWorkerRef)) {
return NS_ERROR_FAILURE;
}
nsresult rv;
nsCOMPtr<nsIStreamLoader> streamLoader;
const gfxFontFaceSrc& src = aUserFontEntry->SourceAt(aSrcIndex);
nsCOMPtr<nsILoadGroup> loadGroup(mWorkerRef->Private()->GetLoadGroup());
nsCOMPtr<nsIChannel> channel;
rv = FontLoaderUtils::BuildChannel(
getter_AddRefs(channel), src.mURI->get(), CORS_ANONYMOUS,
dom::ReferrerPolicy::_empty /* not used */, aUserFontEntry, &src,
mWorkerRef->Private(), loadGroup, nullptr);
NS_ENSURE_SUCCESS(rv, rv);
auto fontLoader =
MakeRefPtr<nsFontFaceLoader>(aUserFontEntry, aSrcIndex, this, channel);
if (LOG_ENABLED()) {
nsCOMPtr<nsIURI> referrer =
src.mReferrerInfo ? src.mReferrerInfo->GetOriginalReferrer() : nullptr;
LOG("userfonts (%p) download start - font uri: (%s) referrer uri: (%s)\n",
fontLoader.get(), src.mURI->GetSpecOrDefault().get(),
referrer ? referrer->GetSpecOrDefault().get() : "");
}
rv = NS_NewStreamLoader(getter_AddRefs(streamLoader), fontLoader, fontLoader);
NS_ENSURE_SUCCESS(rv, rv);
rv = channel->AsyncOpen(streamLoader);
if (NS_FAILED(rv)) {
fontLoader->DropChannel(); // explicitly need to break ref cycle
}
mLoaders.PutEntry(fontLoader);
net::PredictorLearn(src.mURI->get(), mWorkerRef->Private()->GetBaseURI(),
nsINetworkPredictor::LEARN_LOAD_SUBRESOURCE, loadGroup);
if (NS_SUCCEEDED(rv)) {
fontLoader->StartedLoading(streamLoader);
// let the font entry remember the loader, in case we need to cancel it
aUserFontEntry->SetLoader(fontLoader);
}
return rv;
}
bool FontFaceSetWorkerImpl::IsFontLoadAllowed(const gfxFontFaceSrc& aSrc) {
MOZ_ASSERT(aSrc.mSourceType == gfxFontFaceSrc::eSourceType_URL);
MOZ_ASSERT(NS_IsMainThread());
RecursiveMutexAutoLock lock(mMutex);
if (aSrc.mUseOriginPrincipal) {
return true;
}
if (NS_WARN_IF(!mWorkerRef)) {
return false;
}
RefPtr<gfxFontSrcPrincipal> gfxPrincipal =
aSrc.mURI->InheritsSecurityContext() ? nullptr
: aSrc.LoadPrincipal(*this);
nsIPrincipal* principal =
gfxPrincipal ? gfxPrincipal->NodePrincipal() : nullptr;
nsCOMPtr<nsILoadInfo> secCheckLoadInfo = new net::LoadInfo(
mWorkerRef->Private()->GetLoadingPrincipal(), // loading principal
principal, // triggering principal
nullptr, nsILoadInfo::SEC_ONLY_FOR_EXPLICIT_CONTENTSEC_CHECK,
nsIContentPolicy::TYPE_FONT);
int16_t shouldLoad = nsIContentPolicy::ACCEPT;
nsresult rv =
NS_CheckContentLoadPolicy(aSrc.mURI->get(), secCheckLoadInfo, &shouldLoad,
nsContentUtils::GetContentPolicy());
return NS_SUCCEEDED(rv) && NS_CP_ACCEPTED(shouldLoad);
}
nsresult FontFaceSetWorkerImpl::CreateChannelForSyncLoadFontData(
nsIChannel** aOutChannel, gfxUserFontEntry* aFontToLoad,
const gfxFontFaceSrc* aFontFaceSrc) {
RecursiveMutexAutoLock lock(mMutex);
if (NS_WARN_IF(!mWorkerRef)) {
return NS_ERROR_FAILURE;
}
gfxFontSrcPrincipal* principal = aFontToLoad->GetPrincipal();
// We only get here for data: loads, so it doesn't really matter whether we
// use SEC_ALLOW_CROSS_ORIGIN_INHERITS_SEC_CONTEXT or not, to be more
// restrictive we use SEC_REQUIRE_SAME_ORIGIN_INHERITS_SEC_CONTEXT.
return NS_NewChannelWithTriggeringPrincipal(
aOutChannel, aFontFaceSrc->mURI->get(),
mWorkerRef->Private()->GetLoadingPrincipal(),
principal ? principal->NodePrincipal() : nullptr,
nsILoadInfo::SEC_REQUIRE_SAME_ORIGIN_INHERITS_SEC_CONTEXT,
aFontFaceSrc->mUseOriginPrincipal ? nsIContentPolicy::TYPE_UA_FONT
: nsIContentPolicy::TYPE_FONT);
}
nsPresContext* FontFaceSetWorkerImpl::GetPresContext() const { return nullptr; }
TimeStamp FontFaceSetWorkerImpl::GetNavigationStartTimeStamp() {
RecursiveMutexAutoLock lock(mMutex);
if (!mWorkerRef) {
return TimeStamp();
}
return mWorkerRef->Private()->CreationTimeStamp();
}
already_AddRefed<URLExtraData> FontFaceSetWorkerImpl::GetURLExtraData() {
RecursiveMutexAutoLock lock(mMutex);
return RefPtr{mURLExtraData}.forget();
}
#undef LOG_ENABLED
#undef LOG
} // namespace mozilla::dom