forked from mirrors/gecko-dev
704 lines
16 KiB
C++
704 lines
16 KiB
C++
/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#include "ServiceWorkerScriptCache.h"
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#include "mozilla/dom/CacheBinding.h"
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#include "mozilla/dom/cache/CacheStorage.h"
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#include "mozilla/dom/cache/Cache.h"
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#include "nsIThreadRetargetableRequest.h"
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#include "nsIPrincipal.h"
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#include "Workers.h"
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using mozilla::dom::cache::Cache;
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using mozilla::dom::cache::CacheStorage;
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BEGIN_WORKERS_NAMESPACE
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namespace serviceWorkerScriptCache {
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namespace {
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already_AddRefed<CacheStorage>
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CreateCacheStorage(nsIPrincipal* aPrincipal, ErrorResult& aRv)
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{
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AssertIsOnMainThread();
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MOZ_ASSERT(aPrincipal);
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nsIXPConnect* xpc = nsContentUtils::XPConnect();
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MOZ_ASSERT(xpc, "This should never be null!");
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AutoJSAPI jsapi;
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jsapi.Init();
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nsCOMPtr<nsIXPConnectJSObjectHolder> sandbox;
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aRv = xpc->CreateSandbox(jsapi.cx(), aPrincipal, getter_AddRefs(sandbox));
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if (NS_WARN_IF(aRv.Failed())) {
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return nullptr;
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}
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nsCOMPtr<nsIGlobalObject> sandboxGlobalObject =
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xpc::NativeGlobal(sandbox->GetJSObject());
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if (!sandboxGlobalObject) {
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aRv.Throw(NS_ERROR_FAILURE);
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return nullptr;
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}
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return CacheStorage::CreateOnMainThread(cache::CHROME_ONLY_NAMESPACE,
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sandboxGlobalObject,
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aPrincipal, aRv);
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}
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class CompareManager;
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// This class downloads a URL from the network and then it calls
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// NetworkFinished() in the CompareManager.
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class CompareNetwork final : public nsIStreamLoaderObserver
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{
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public:
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NS_DECL_ISUPPORTS
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NS_DECL_NSISTREAMLOADEROBSERVER
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explicit CompareNetwork(CompareManager* aManager)
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: mManager(aManager)
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{
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MOZ_ASSERT(aManager);
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AssertIsOnMainThread();
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}
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nsresult
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Initialize(nsIPrincipal* aPrincipal, const nsAString& aURL)
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{
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MOZ_ASSERT(aPrincipal);
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AssertIsOnMainThread();
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nsCOMPtr<nsIURI> uri;
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nsresult rv = NS_NewURI(getter_AddRefs(uri), aURL, nullptr, nullptr);
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if (NS_WARN_IF(NS_FAILED(rv))) {
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return rv;
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}
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rv = NS_NewChannel(getter_AddRefs(mChannel),
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uri, aPrincipal,
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nsILoadInfo::SEC_NORMAL,
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nsIContentPolicy::TYPE_SCRIPT); // FIXME(nsm): TYPE_SERVICEWORKER
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if (NS_WARN_IF(NS_FAILED(rv))) {
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return rv;
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}
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nsLoadFlags flags;
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rv = mChannel->GetLoadFlags(&flags);
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if (NS_WARN_IF(NS_FAILED(rv))) {
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return rv;
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}
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flags |= nsIRequest::LOAD_BYPASS_CACHE;
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rv = mChannel->SetLoadFlags(flags);
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if (NS_WARN_IF(NS_FAILED(rv))) {
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return rv;
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}
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nsCOMPtr<nsIHttpChannel> httpChannel = do_QueryInterface(mChannel);
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if (httpChannel) {
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// Spec says no redirects allowed for SW scripts.
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httpChannel->SetRedirectionLimit(0);
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}
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// Don't let serviceworker intercept.
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nsCOMPtr<nsIHttpChannelInternal> internalChannel = do_QueryInterface(mChannel);
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if (internalChannel) {
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internalChannel->ForceNoIntercept();
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}
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nsCOMPtr<nsIStreamLoader> loader;
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rv = NS_NewStreamLoader(getter_AddRefs(loader), this);
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if (NS_WARN_IF(NS_FAILED(rv))) {
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return rv;
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}
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rv = mChannel->AsyncOpen(loader, nullptr);
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if (NS_WARN_IF(NS_FAILED(rv))) {
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return rv;
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}
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return NS_OK;
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}
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void
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Abort()
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{
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AssertIsOnMainThread();
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MOZ_ASSERT(mChannel);
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mChannel->Cancel(NS_BINDING_ABORTED);
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mChannel = nullptr;
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}
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const nsString& Buffer() const
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{
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AssertIsOnMainThread();
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return mBuffer;
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}
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private:
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~CompareNetwork()
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{
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AssertIsOnMainThread();
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}
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nsRefPtr<CompareManager> mManager;
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nsCOMPtr<nsIChannel> mChannel;
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nsString mBuffer;
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};
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NS_IMPL_ISUPPORTS(CompareNetwork, nsIStreamLoaderObserver)
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// This class gets a cached Response from the CacheStorage and then it calls
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// CacheFinished() in the CompareManager.
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class CompareCache final : public PromiseNativeHandler
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, public nsIStreamLoaderObserver
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{
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public:
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NS_DECL_ISUPPORTS
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NS_DECL_NSISTREAMLOADEROBSERVER
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explicit CompareCache(CompareManager* aManager)
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: mManager(aManager)
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, mState(WaitingForCache)
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, mAborted(false)
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{
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MOZ_ASSERT(aManager);
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AssertIsOnMainThread();
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}
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nsresult
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Initialize(nsIPrincipal* aPrincipal, const nsAString& aURL,
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const nsAString& aCacheName)
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{
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MOZ_ASSERT(aPrincipal);
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AssertIsOnMainThread();
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mURL = aURL;
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ErrorResult rv;
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nsRefPtr<CacheStorage> cacheStorage = CreateCacheStorage(aPrincipal, rv);
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if (NS_WARN_IF(rv.Failed())) {
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return rv.StealNSResult();
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}
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nsRefPtr<Promise> promise = cacheStorage->Open(aCacheName, rv);
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if (NS_WARN_IF(rv.Failed())) {
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return rv.StealNSResult();
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}
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promise->AppendNativeHandler(this);
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return NS_OK;
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}
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void
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Abort()
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{
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AssertIsOnMainThread();
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MOZ_ASSERT(!mAborted);
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mAborted = true;
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if (mPump) {
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mPump->Cancel(NS_BINDING_ABORTED);
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mPump = nullptr;
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}
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}
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// This class manages 2 promises: 1 is to retrieve cache object, and 2 is for
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// the value from the cache. For this reason we have mState to know what
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// reject/resolve callback we are handling.
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virtual void
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ResolvedCallback(JSContext* aCx, JS::Handle<JS::Value> aValue) override
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{
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AssertIsOnMainThread();
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if (mAborted) {
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return;
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}
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if (mState == WaitingForCache) {
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ManageCacheResult(aCx, aValue);
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return;
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}
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MOZ_ASSERT(mState == WaitingForValue);
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ManageValueResult(aCx, aValue);
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}
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virtual void
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RejectedCallback(JSContext* aCx, JS::Handle<JS::Value> aValue) override;
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const nsString& Buffer() const
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{
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AssertIsOnMainThread();
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return mBuffer;
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}
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private:
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~CompareCache()
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{
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AssertIsOnMainThread();
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}
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void
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ManageCacheResult(JSContext* aCx, JS::Handle<JS::Value> aValue);
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void
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ManageValueResult(JSContext* aCx, JS::Handle<JS::Value> aValue);
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nsRefPtr<CompareManager> mManager;
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nsCOMPtr<nsIInputStreamPump> mPump;
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nsString mURL;
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nsString mBuffer;
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enum {
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WaitingForCache,
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WaitingForValue
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} mState;
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bool mAborted;
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};
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NS_IMPL_ISUPPORTS(CompareCache, nsIStreamLoaderObserver)
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class CompareManager final
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{
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public:
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NS_INLINE_DECL_REFCOUNTING(CompareManager)
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explicit CompareManager(CompareCallback* aCallback)
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: mCallback(aCallback)
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, mNetworkFinished(false)
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, mCacheFinished(false)
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, mInCache(false)
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{
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AssertIsOnMainThread();
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}
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nsresult
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Initialize(nsIPrincipal* aPrincipal, const nsAString& aURL,
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const nsAString& aCacheName)
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{
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AssertIsOnMainThread();
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MOZ_ASSERT(aPrincipal);
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mCN = new CompareNetwork(this);
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nsresult rv = mCN->Initialize(aPrincipal, aURL);
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if (NS_WARN_IF(NS_FAILED(rv))) {
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return rv;
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}
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if (!aCacheName.IsEmpty()) {
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mCC = new CompareCache(this);
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mCC->Initialize(aPrincipal, aURL, aCacheName);
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if (NS_WARN_IF(NS_FAILED(rv))) {
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mCN->Abort();
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return rv;
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}
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}
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return NS_OK;
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}
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void
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NetworkFinished(nsresult aStatus)
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{
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AssertIsOnMainThread();
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mNetworkFinished = true;
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if (NS_FAILED(aStatus)) {
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if (mCC) {
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mCC->Abort();
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}
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ComparisonFinished(aStatus, false);
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return;
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}
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MaybeCompare();
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}
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void
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CacheFinished(nsresult aStatus, bool aInCache)
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{
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AssertIsOnMainThread();
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mCacheFinished = true;
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mInCache = aInCache;
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if (NS_FAILED(aStatus)) {
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if (mCN) {
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mCN->Abort();
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}
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ComparisonFinished(aStatus, false);
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return;
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}
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MaybeCompare();
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}
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void
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MaybeCompare()
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{
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AssertIsOnMainThread();
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if (!mNetworkFinished || (mCC && !mCacheFinished)) {
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return;
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}
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if (!mCC || !mInCache) {
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ComparisonFinished(NS_OK, false);
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return;
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}
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ComparisonFinished(NS_OK, mCC->Buffer().Equals(mCN->Buffer()));
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}
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private:
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~CompareManager()
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{
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AssertIsOnMainThread();
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MOZ_ASSERT(!mCC);
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MOZ_ASSERT(!mCN);
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}
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void
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ComparisonFinished(nsresult aStatus, bool aIsEqual)
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{
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AssertIsOnMainThread();
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MOZ_ASSERT(mCallback);
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mCallback->ComparisonResult(aStatus, aIsEqual);
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mCallback = nullptr;
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mCN = nullptr;
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mCC = nullptr;
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}
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nsRefPtr<CompareCallback> mCallback;
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nsRefPtr<CompareNetwork> mCN;
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nsRefPtr<CompareCache> mCC;
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bool mNetworkFinished;
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bool mCacheFinished;
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bool mInCache;
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};
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NS_IMETHODIMP
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CompareNetwork::OnStreamComplete(nsIStreamLoader* aLoader, nsISupports* aContext,
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nsresult aStatus, uint32_t aLen,
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const uint8_t* aString)
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{
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AssertIsOnMainThread();
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// If no channel, Abort() has been called.
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if (!mChannel) {
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return NS_OK;
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}
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if (NS_WARN_IF(NS_FAILED(aStatus))) {
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mManager->NetworkFinished(aStatus);
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return NS_OK;
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}
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nsCOMPtr<nsIRequest> request;
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nsresult rv = aLoader->GetRequest(getter_AddRefs(request));
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if (NS_WARN_IF(NS_FAILED(rv))) {
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mManager->NetworkFinished(rv);
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return NS_OK;
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}
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nsCOMPtr<nsIHttpChannel> httpChannel = do_QueryInterface(request);
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if (httpChannel) {
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bool requestSucceeded;
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rv = httpChannel->GetRequestSucceeded(&requestSucceeded);
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if (NS_WARN_IF(NS_FAILED(rv))) {
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mManager->NetworkFinished(rv);
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return NS_OK;
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}
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if (!requestSucceeded) {
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mManager->NetworkFinished(NS_ERROR_FAILURE);
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return NS_OK;
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}
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}
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else {
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// The only supported request schemes are http, https, and app.
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// Above, we check to ensure that the request is http or https
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// based on the channel qi. Here we test the scheme to ensure
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// that it is app. Otherwise, bail.
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nsCOMPtr<nsIChannel> channel = do_QueryInterface(request);
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if (NS_WARN_IF(!channel)) {
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mManager->NetworkFinished(NS_ERROR_FAILURE);
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return NS_OK;
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}
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nsCOMPtr<nsIURI> uri;
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rv = channel->GetURI(getter_AddRefs(uri));
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if (NS_WARN_IF(NS_FAILED(rv))) {
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mManager->NetworkFinished(rv);
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return NS_OK;
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}
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nsAutoCString scheme;
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rv = uri->GetScheme(scheme);
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if (NS_WARN_IF(NS_FAILED(rv))) {
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mManager->NetworkFinished(rv);
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return NS_OK;
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}
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if (!scheme.LowerCaseEqualsLiteral("app")) {
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mManager->NetworkFinished(NS_ERROR_FAILURE);
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return NS_OK;
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}
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}
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// FIXME(nsm): "Extract mime type..."
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char16_t* buffer = nullptr;
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size_t len = 0;
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rv = nsScriptLoader::ConvertToUTF16(httpChannel, aString, aLen,
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NS_LITERAL_STRING("UTF-8"), nullptr,
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buffer, len);
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if (NS_WARN_IF(NS_FAILED(rv))) {
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mManager->NetworkFinished(rv);
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return rv;
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}
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mBuffer.Adopt(buffer, len);
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mManager->NetworkFinished(NS_OK);
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return NS_OK;
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}
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NS_IMETHODIMP
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CompareCache::OnStreamComplete(nsIStreamLoader* aLoader, nsISupports* aContext,
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nsresult aStatus, uint32_t aLen,
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const uint8_t* aString)
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{
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AssertIsOnMainThread();
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if (mAborted) {
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return aStatus;
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}
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if (NS_WARN_IF(NS_FAILED(aStatus))) {
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mManager->CacheFinished(aStatus, false);
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return aStatus;
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}
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char16_t* buffer = nullptr;
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size_t len = 0;
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nsresult rv = nsScriptLoader::ConvertToUTF16(nullptr, aString, aLen,
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NS_LITERAL_STRING("UTF-8"),
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nullptr, buffer, len);
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if (NS_WARN_IF(NS_FAILED(rv))) {
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mManager->CacheFinished(rv, false);
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return rv;
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}
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mBuffer.Adopt(buffer, len);
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mManager->CacheFinished(NS_OK, true);
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return NS_OK;
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}
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void
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CompareCache::RejectedCallback(JSContext* aCx, JS::Handle<JS::Value> aValue)
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{
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AssertIsOnMainThread();
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if (mAborted) {
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return;
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}
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mManager->CacheFinished(NS_ERROR_FAILURE, false);
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}
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void
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CompareCache::ManageCacheResult(JSContext* aCx, JS::Handle<JS::Value> aValue)
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{
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AssertIsOnMainThread();
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if (NS_WARN_IF(!aValue.isObject())) {
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mManager->CacheFinished(NS_ERROR_FAILURE, false);
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return;
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}
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JS::Rooted<JSObject*> obj(aCx, &aValue.toObject());
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if (NS_WARN_IF(!obj)) {
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mManager->CacheFinished(NS_ERROR_FAILURE, false);
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return;
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}
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Cache* cache = nullptr;
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nsresult rv = UNWRAP_OBJECT(Cache, obj, cache);
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if (NS_WARN_IF(NS_FAILED(rv))) {
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mManager->CacheFinished(rv, false);
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return;
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}
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RequestOrUSVString request;
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request.SetAsUSVString().Rebind(mURL.Data(), mURL.Length());
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ErrorResult error;
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CacheQueryOptions params;
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nsRefPtr<Promise> promise = cache->Match(request, params, error);
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if (NS_WARN_IF(error.Failed())) {
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mManager->CacheFinished(error.StealNSResult(), false);
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return;
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}
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promise->AppendNativeHandler(this);
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mState = WaitingForValue;
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}
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void
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CompareCache::ManageValueResult(JSContext* aCx, JS::Handle<JS::Value> aValue)
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{
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AssertIsOnMainThread();
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// The cache returns undefined if the object is not stored.
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if (aValue.isUndefined()) {
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mManager->CacheFinished(NS_OK, false);
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return;
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}
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MOZ_ASSERT(aValue.isObject());
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JS::Rooted<JSObject*> obj(aCx, &aValue.toObject());
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if (NS_WARN_IF(!obj)) {
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mManager->CacheFinished(NS_ERROR_FAILURE, false);
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return;
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}
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Response* response = nullptr;
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nsresult rv = UNWRAP_OBJECT(Response, obj, response);
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if (NS_WARN_IF(NS_FAILED(rv))) {
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mManager->CacheFinished(rv, false);
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return;
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}
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|
MOZ_ASSERT(response->Ok());
|
|
|
|
nsCOMPtr<nsIInputStream> inputStream;
|
|
response->GetBody(getter_AddRefs(inputStream));
|
|
MOZ_ASSERT(inputStream);
|
|
|
|
MOZ_ASSERT(!mPump);
|
|
rv = NS_NewInputStreamPump(getter_AddRefs(mPump), inputStream);
|
|
if (NS_WARN_IF(NS_FAILED(rv))) {
|
|
mManager->CacheFinished(rv, false);
|
|
return;
|
|
}
|
|
|
|
nsCOMPtr<nsIStreamLoader> loader;
|
|
rv = NS_NewStreamLoader(getter_AddRefs(loader), this);
|
|
if (NS_WARN_IF(NS_FAILED(rv))) {
|
|
mManager->CacheFinished(rv, false);
|
|
return;
|
|
}
|
|
|
|
rv = mPump->AsyncRead(loader, nullptr);
|
|
if (NS_WARN_IF(NS_FAILED(rv))) {
|
|
mPump = nullptr;
|
|
mManager->CacheFinished(rv, false);
|
|
return;
|
|
}
|
|
|
|
nsCOMPtr<nsIThreadRetargetableRequest> rr = do_QueryInterface(mPump);
|
|
if (rr) {
|
|
nsCOMPtr<nsIEventTarget> sts =
|
|
do_GetService(NS_STREAMTRANSPORTSERVICE_CONTRACTID);
|
|
rv = rr->RetargetDeliveryTo(sts);
|
|
if (NS_WARN_IF(NS_FAILED(rv))) {
|
|
mPump = nullptr;
|
|
mManager->CacheFinished(rv, false);
|
|
return;
|
|
}
|
|
}
|
|
}
|
|
|
|
} // anonymous namespace
|
|
|
|
nsresult
|
|
PurgeCache(nsIPrincipal* aPrincipal, const nsAString& aCacheName)
|
|
{
|
|
AssertIsOnMainThread();
|
|
MOZ_ASSERT(aPrincipal);
|
|
|
|
if (aCacheName.IsEmpty()) {
|
|
return NS_OK;
|
|
}
|
|
|
|
ErrorResult rv;
|
|
nsRefPtr<CacheStorage> cacheStorage = CreateCacheStorage(aPrincipal, rv);
|
|
if (NS_WARN_IF(rv.Failed())) {
|
|
return rv.StealNSResult();
|
|
}
|
|
|
|
// We use the ServiceWorker scope as key for the cacheStorage.
|
|
nsRefPtr<Promise> promise =
|
|
cacheStorage->Delete(aCacheName, rv);
|
|
if (NS_WARN_IF(rv.Failed())) {
|
|
return rv.StealNSResult();
|
|
}
|
|
|
|
// We don't actually care about the result of the delete operation.
|
|
return NS_OK;
|
|
}
|
|
|
|
nsresult
|
|
GenerateCacheName(nsAString& aName)
|
|
{
|
|
nsresult rv;
|
|
nsCOMPtr<nsIUUIDGenerator> uuidGenerator =
|
|
do_GetService("@mozilla.org/uuid-generator;1", &rv);
|
|
if (NS_WARN_IF(NS_FAILED(rv))) {
|
|
return rv;
|
|
}
|
|
|
|
nsID id;
|
|
rv = uuidGenerator->GenerateUUIDInPlace(&id);
|
|
if (NS_WARN_IF(NS_FAILED(rv))) {
|
|
return rv;
|
|
}
|
|
|
|
char chars[NSID_LENGTH];
|
|
id.ToProvidedString(chars);
|
|
aName.AssignASCII(chars, NSID_LENGTH);
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
nsresult
|
|
Compare(nsIPrincipal* aPrincipal, const nsAString& aCacheName,
|
|
const nsAString& aURL, CompareCallback* aCallback)
|
|
{
|
|
AssertIsOnMainThread();
|
|
MOZ_ASSERT(aPrincipal);
|
|
MOZ_ASSERT(!aURL.IsEmpty());
|
|
MOZ_ASSERT(aCallback);
|
|
|
|
nsRefPtr<CompareManager> cm = new CompareManager(aCallback);
|
|
|
|
nsresult rv = cm->Initialize(aPrincipal, aURL, aCacheName);
|
|
if (NS_WARN_IF(NS_FAILED(rv))) {
|
|
return rv;
|
|
}
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
} // serviceWorkerScriptCache namespace
|
|
|
|
END_WORKERS_NAMESPACE
|