diff options
Diffstat (limited to 'dom/cache/Cache.cpp')
| -rw-r--r-- | dom/cache/Cache.cpp | 617 |
1 files changed, 617 insertions, 0 deletions
diff --git a/dom/cache/Cache.cpp b/dom/cache/Cache.cpp new file mode 100644 index 0000000000..d9b94f6b14 --- /dev/null +++ b/dom/cache/Cache.cpp @@ -0,0 +1,617 @@ +/* -*- 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 "mozilla/dom/cache/Cache.h" + +#include "js/Array.h" // JS::GetArrayLength, JS::IsArrayObject +#include "js/PropertyAndElement.h" // JS_GetElement +#include "mozilla/dom/Headers.h" +#include "mozilla/dom/InternalResponse.h" +#include "mozilla/dom/Promise.h" +#include "mozilla/dom/PromiseNativeHandler.h" +#include "mozilla/dom/Response.h" +#include "mozilla/dom/RootedDictionary.h" +#include "mozilla/dom/WorkerPrivate.h" +#include "mozilla/dom/CacheBinding.h" +#include "mozilla/dom/cache/AutoUtils.h" +#include "mozilla/dom/cache/CacheChild.h" +#include "mozilla/dom/cache/CacheCommon.h" +#include "mozilla/dom/cache/CacheWorkerRef.h" +#include "mozilla/dom/quota/ResultExtensions.h" +#include "mozilla/ErrorResult.h" +#include "mozilla/Preferences.h" +#include "mozilla/Unused.h" +#include "nsIGlobalObject.h" + +namespace mozilla::dom::cache { + +using mozilla::ipc::PBackgroundChild; + +namespace { + +enum class PutStatusPolicy { Default, RequireOK }; + +bool IsValidPutRequestURL(const nsAString& aUrl, ErrorResult& aRv) { + bool validScheme = false; + + // make a copy because ProcessURL strips the fragmet + NS_ConvertUTF16toUTF8 url(aUrl); + + TypeUtils::ProcessURL(url, &validScheme, nullptr, nullptr, aRv); + if (aRv.Failed()) { + return false; + } + + if (!validScheme) { + // `url` has been modified, so don't use it here. + aRv.ThrowTypeError<MSG_INVALID_URL_SCHEME>("Request", + NS_ConvertUTF16toUTF8(aUrl)); + return false; + } + + return true; +} + +static bool IsValidPutRequestMethod(const Request& aRequest, ErrorResult& aRv) { + nsAutoCString method; + aRequest.GetMethod(method); + if (!method.LowerCaseEqualsLiteral("get")) { + aRv.ThrowTypeError<MSG_INVALID_REQUEST_METHOD>(method); + return false; + } + + return true; +} + +static bool IsValidPutRequestMethod(const RequestOrUSVString& aRequest, + ErrorResult& aRv) { + // If the provided request is a string URL, then it will default to + // a valid http method automatically. + if (!aRequest.IsRequest()) { + return true; + } + return IsValidPutRequestMethod(aRequest.GetAsRequest(), aRv); +} + +static bool IsValidPutResponseStatus(Response& aResponse, + PutStatusPolicy aPolicy, + ErrorResult& aRv) { + if ((aPolicy == PutStatusPolicy::RequireOK && !aResponse.Ok()) || + aResponse.Status() == 206) { + nsCString type(ResponseTypeValues::GetString(aResponse.Type())); + + nsAutoString url; + aResponse.GetUrl(url); + + aRv.ThrowTypeError<MSG_CACHE_ADD_FAILED_RESPONSE>( + type, IntToCString(aResponse.Status()), NS_ConvertUTF16toUTF8(url)); + return false; + } + + return true; +} + +} // namespace + +// Helper class to wait for Add()/AddAll() fetch requests to complete and +// then perform a PutAll() with the responses. This class holds a WorkerRef +// to keep the Worker thread alive. This is mainly to ensure that Add/AddAll +// act the same as other Cache operations that directly create a CacheOpChild +// actor. +class Cache::FetchHandler final : public PromiseNativeHandler { + public: + FetchHandler(SafeRefPtr<CacheWorkerRef> aWorkerRef, Cache* aCache, + nsTArray<SafeRefPtr<Request>>&& aRequestList, Promise* aPromise) + : mWorkerRef(std::move(aWorkerRef)), + mCache(aCache), + mRequestList(std::move(aRequestList)), + mPromise(aPromise) { + MOZ_ASSERT_IF(!NS_IsMainThread(), mWorkerRef); + MOZ_DIAGNOSTIC_ASSERT(mCache); + MOZ_DIAGNOSTIC_ASSERT(mPromise); + } + + virtual void ResolvedCallback(JSContext* aCx, JS::Handle<JS::Value> aValue, + ErrorResult& aRv) override { + NS_ASSERT_OWNINGTHREAD(FetchHandler); + + // Stop holding the worker alive when we leave this method. + const SafeRefPtr<CacheWorkerRef> workerRef = std::move(mWorkerRef); + + // Promise::All() passed an array of fetch() Promises should give us + // an Array of Response objects. The following code unwraps these + // JS values back to an nsTArray<RefPtr<Response>>. + + AutoTArray<RefPtr<Response>, 256> responseList; + responseList.SetCapacity(mRequestList.Length()); + + const auto failOnErr = [this](const auto) { Fail(); }; + + bool isArray; + QM_TRY(OkIf(JS::IsArrayObject(aCx, aValue, &isArray)), QM_VOID, failOnErr); + QM_TRY(OkIf(isArray), QM_VOID, failOnErr); + + JS::Rooted<JSObject*> obj(aCx, &aValue.toObject()); + + uint32_t length; + QM_TRY(OkIf(JS::GetArrayLength(aCx, obj, &length)), QM_VOID, failOnErr); + + for (uint32_t i = 0; i < length; ++i) { + JS::Rooted<JS::Value> value(aCx); + + QM_TRY(OkIf(JS_GetElement(aCx, obj, i, &value)), QM_VOID, failOnErr); + + QM_TRY(OkIf(value.isObject()), QM_VOID, failOnErr); + + JS::Rooted<JSObject*> responseObj(aCx, &value.toObject()); + + RefPtr<Response> response; + QM_TRY(MOZ_TO_RESULT(UNWRAP_OBJECT(Response, responseObj, response)), + QM_VOID, failOnErr); + + QM_TRY(OkIf(response->Type() != ResponseType::Error), QM_VOID, failOnErr); + + // Do not allow the convenience methods .add()/.addAll() to store failed + // or invalid responses. A consequence of this is that these methods + // cannot be used to store opaque or opaqueredirect responses since they + // always expose a 0 status value. + ErrorResult errorResult; + if (!IsValidPutResponseStatus(*response, PutStatusPolicy::RequireOK, + errorResult)) { + // TODO: abort the fetch requests we have running (bug 1157434) + mPromise->MaybeReject(std::move(errorResult)); + return; + } + + responseList.AppendElement(std::move(response)); + } + + MOZ_DIAGNOSTIC_ASSERT(mRequestList.Length() == responseList.Length()); + + // Now store the unwrapped Response list in the Cache. + ErrorResult result; + // TODO: Here we use the JSContext as received by the ResolvedCallback, and + // its state could be the wrong one. The spec doesn't say anything + // about it, yet (bug 1384006) + RefPtr<Promise> put = + mCache->PutAll(aCx, mRequestList, responseList, result); + result.WouldReportJSException(); + if (NS_WARN_IF(result.Failed())) { + // TODO: abort the fetch requests we have running (bug 1157434) + mPromise->MaybeReject(std::move(result)); + return; + } + + // Chain the Cache::Put() promise to the original promise returned to + // the content script. + mPromise->MaybeResolve(put); + } + + virtual void RejectedCallback(JSContext* aCx, JS::Handle<JS::Value> aValue, + ErrorResult& aRv) override { + NS_ASSERT_OWNINGTHREAD(FetchHandler); + Fail(); + } + + private: + ~FetchHandler() = default; + + void Fail() { mPromise->MaybeRejectWithTypeError<MSG_FETCH_FAILED>(); } + + SafeRefPtr<CacheWorkerRef> mWorkerRef; + RefPtr<Cache> mCache; + nsTArray<SafeRefPtr<Request>> mRequestList; + RefPtr<Promise> mPromise; + + NS_DECL_ISUPPORTS +}; + +NS_IMPL_ISUPPORTS0(Cache::FetchHandler) + +NS_IMPL_CYCLE_COLLECTING_ADDREF(mozilla::dom::cache::Cache); +NS_IMPL_CYCLE_COLLECTING_RELEASE(mozilla::dom::cache::Cache); +NS_IMPL_CYCLE_COLLECTION_WRAPPERCACHE(mozilla::dom::cache::Cache, mGlobal); + +NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION(Cache) + NS_WRAPPERCACHE_INTERFACE_MAP_ENTRY + NS_INTERFACE_MAP_ENTRY(nsISupports) +NS_INTERFACE_MAP_END + +Cache::Cache(nsIGlobalObject* aGlobal, CacheChild* aActor, Namespace aNamespace) + : mGlobal(aGlobal), mActor(aActor), mNamespace(aNamespace) { + MOZ_DIAGNOSTIC_ASSERT(mGlobal); + MOZ_DIAGNOSTIC_ASSERT(mActor); + MOZ_DIAGNOSTIC_ASSERT(mNamespace != INVALID_NAMESPACE); + mActor->SetListener(this); +} + +already_AddRefed<Promise> Cache::Match(JSContext* aCx, + const RequestOrUSVString& aRequest, + const CacheQueryOptions& aOptions, + ErrorResult& aRv) { + if (NS_WARN_IF(!mActor)) { + aRv.Throw(NS_ERROR_UNEXPECTED); + return nullptr; + } + + CacheChild::AutoLock actorLock(*mActor); + + SafeRefPtr<InternalRequest> ir = + ToInternalRequest(aCx, aRequest, IgnoreBody, aRv); + if (NS_WARN_IF(aRv.Failed())) { + return nullptr; + } + + CacheQueryParams params; + ToCacheQueryParams(params, aOptions); + + AutoChildOpArgs args( + this, CacheMatchArgs(CacheRequest(), params, GetOpenMode()), 1); + + args.Add(*ir, IgnoreBody, IgnoreInvalidScheme, aRv); + if (NS_WARN_IF(aRv.Failed())) { + return nullptr; + } + + return ExecuteOp(args, aRv); +} + +already_AddRefed<Promise> Cache::MatchAll( + JSContext* aCx, const Optional<RequestOrUSVString>& aRequest, + const CacheQueryOptions& aOptions, ErrorResult& aRv) { + if (NS_WARN_IF(!mActor)) { + aRv.Throw(NS_ERROR_UNEXPECTED); + return nullptr; + } + + CacheChild::AutoLock actorLock(*mActor); + + CacheQueryParams params; + ToCacheQueryParams(params, aOptions); + + AutoChildOpArgs args(this, + CacheMatchAllArgs(Nothing(), params, GetOpenMode()), 1); + + if (aRequest.WasPassed()) { + SafeRefPtr<InternalRequest> ir = + ToInternalRequest(aCx, aRequest.Value(), IgnoreBody, aRv); + if (aRv.Failed()) { + return nullptr; + } + + args.Add(*ir, IgnoreBody, IgnoreInvalidScheme, aRv); + if (aRv.Failed()) { + return nullptr; + } + } + + return ExecuteOp(args, aRv); +} + +already_AddRefed<Promise> Cache::Add(JSContext* aContext, + const RequestOrUSVString& aRequest, + CallerType aCallerType, ErrorResult& aRv) { + if (NS_WARN_IF(!mActor)) { + aRv.Throw(NS_ERROR_UNEXPECTED); + return nullptr; + } + + CacheChild::AutoLock actorLock(*mActor); + + if (!IsValidPutRequestMethod(aRequest, aRv)) { + return nullptr; + } + + GlobalObject global(aContext, mGlobal->GetGlobalJSObject()); + MOZ_DIAGNOSTIC_ASSERT(!global.Failed()); + + nsTArray<SafeRefPtr<Request>> requestList(1); + RootedDictionary<RequestInit> requestInit(aContext); + SafeRefPtr<Request> request = + Request::Constructor(global, aRequest, requestInit, aRv); + if (NS_WARN_IF(aRv.Failed())) { + return nullptr; + } + + nsAutoString url; + request->GetUrl(url); + if (NS_WARN_IF(!IsValidPutRequestURL(url, aRv))) { + return nullptr; + } + + requestList.AppendElement(std::move(request)); + return AddAll(global, std::move(requestList), aCallerType, aRv); +} + +already_AddRefed<Promise> Cache::AddAll( + JSContext* aContext, const Sequence<OwningRequestOrUSVString>& aRequestList, + CallerType aCallerType, ErrorResult& aRv) { + if (NS_WARN_IF(!mActor)) { + aRv.Throw(NS_ERROR_UNEXPECTED); + return nullptr; + } + + CacheChild::AutoLock actorLock(*mActor); + + GlobalObject global(aContext, mGlobal->GetGlobalJSObject()); + MOZ_DIAGNOSTIC_ASSERT(!global.Failed()); + + nsTArray<SafeRefPtr<Request>> requestList(aRequestList.Length()); + for (uint32_t i = 0; i < aRequestList.Length(); ++i) { + RequestOrUSVString requestOrString; + + if (aRequestList[i].IsRequest()) { + requestOrString.SetAsRequest() = aRequestList[i].GetAsRequest(); + if (NS_WARN_IF( + !IsValidPutRequestMethod(requestOrString.GetAsRequest(), aRv))) { + return nullptr; + } + } else { + requestOrString.SetAsUSVString().ShareOrDependUpon( + aRequestList[i].GetAsUSVString()); + } + + RootedDictionary<RequestInit> requestInit(aContext); + SafeRefPtr<Request> request = + Request::Constructor(global, requestOrString, requestInit, aRv); + if (NS_WARN_IF(aRv.Failed())) { + return nullptr; + } + + nsAutoString url; + request->GetUrl(url); + if (NS_WARN_IF(!IsValidPutRequestURL(url, aRv))) { + return nullptr; + } + + requestList.AppendElement(std::move(request)); + } + + return AddAll(global, std::move(requestList), aCallerType, aRv); +} + +already_AddRefed<Promise> Cache::Put(JSContext* aCx, + const RequestOrUSVString& aRequest, + Response& aResponse, ErrorResult& aRv) { + if (NS_WARN_IF(!mActor)) { + aRv.Throw(NS_ERROR_UNEXPECTED); + return nullptr; + } + + CacheChild::AutoLock actorLock(*mActor); + + if (NS_WARN_IF(!IsValidPutRequestMethod(aRequest, aRv))) { + return nullptr; + } + + if (!IsValidPutResponseStatus(aResponse, PutStatusPolicy::Default, aRv)) { + return nullptr; + } + + if (NS_WARN_IF(aResponse.GetPrincipalInfo() && + aResponse.GetPrincipalInfo()->type() == + mozilla::ipc::PrincipalInfo::TExpandedPrincipalInfo)) { + // WebExtensions Content Scripts can currently run fetch from their global + // which will end up to have an expanded principal, but we require that the + // contents of Cache storage for the content origin to be same-origin, and + // never an expanded principal (See Bug 1753810). + aRv.ThrowSecurityError("Disallowed on WebExtension ContentScript Request"); + return nullptr; + } + + SafeRefPtr<InternalRequest> ir = + ToInternalRequest(aCx, aRequest, ReadBody, aRv); + if (NS_WARN_IF(aRv.Failed())) { + return nullptr; + } + + AutoChildOpArgs args(this, CachePutAllArgs(), 1); + + args.Add(aCx, *ir, ReadBody, TypeErrorOnInvalidScheme, aResponse, aRv); + if (NS_WARN_IF(aRv.Failed())) { + return nullptr; + } + + return ExecuteOp(args, aRv); +} + +already_AddRefed<Promise> Cache::Delete(JSContext* aCx, + const RequestOrUSVString& aRequest, + const CacheQueryOptions& aOptions, + ErrorResult& aRv) { + if (NS_WARN_IF(!mActor)) { + aRv.Throw(NS_ERROR_UNEXPECTED); + return nullptr; + } + + CacheChild::AutoLock actorLock(*mActor); + + SafeRefPtr<InternalRequest> ir = + ToInternalRequest(aCx, aRequest, IgnoreBody, aRv); + if (NS_WARN_IF(aRv.Failed())) { + return nullptr; + } + + CacheQueryParams params; + ToCacheQueryParams(params, aOptions); + + AutoChildOpArgs args(this, CacheDeleteArgs(CacheRequest(), params), 1); + + args.Add(*ir, IgnoreBody, IgnoreInvalidScheme, aRv); + if (NS_WARN_IF(aRv.Failed())) { + return nullptr; + } + + return ExecuteOp(args, aRv); +} + +already_AddRefed<Promise> Cache::Keys( + JSContext* aCx, const Optional<RequestOrUSVString>& aRequest, + const CacheQueryOptions& aOptions, ErrorResult& aRv) { + if (NS_WARN_IF(!mActor)) { + aRv.Throw(NS_ERROR_UNEXPECTED); + return nullptr; + } + + CacheChild::AutoLock actorLock(*mActor); + + CacheQueryParams params; + ToCacheQueryParams(params, aOptions); + + AutoChildOpArgs args(this, CacheKeysArgs(Nothing(), params, GetOpenMode()), + 1); + + if (aRequest.WasPassed()) { + SafeRefPtr<InternalRequest> ir = + ToInternalRequest(aCx, aRequest.Value(), IgnoreBody, aRv); + if (NS_WARN_IF(aRv.Failed())) { + return nullptr; + } + + args.Add(*ir, IgnoreBody, IgnoreInvalidScheme, aRv); + if (NS_WARN_IF(aRv.Failed())) { + return nullptr; + } + } + + return ExecuteOp(args, aRv); +} + +nsISupports* Cache::GetParentObject() const { return mGlobal; } + +JSObject* Cache::WrapObject(JSContext* aContext, + JS::Handle<JSObject*> aGivenProto) { + return Cache_Binding::Wrap(aContext, this, aGivenProto); +} + +void Cache::DestroyInternal(CacheChild* aActor) { + MOZ_DIAGNOSTIC_ASSERT(mActor); + MOZ_DIAGNOSTIC_ASSERT(mActor == aActor); + mActor->ClearListener(); + mActor = nullptr; +} + +nsIGlobalObject* Cache::GetGlobalObject() const { return mGlobal; } + +#ifdef DEBUG +void Cache::AssertOwningThread() const { NS_ASSERT_OWNINGTHREAD(Cache); } +#endif + +PBackgroundChild* Cache::GetIPCManager() { + NS_ASSERT_OWNINGTHREAD(Cache); + MOZ_DIAGNOSTIC_ASSERT(mActor); + return mActor->Manager(); +} + +Cache::~Cache() { + NS_ASSERT_OWNINGTHREAD(Cache); + if (mActor) { + mActor->StartDestroyFromListener(); + // DestroyInternal() is called synchronously by StartDestroyFromListener(). + // So we should have already cleared the mActor. + MOZ_DIAGNOSTIC_ASSERT(!mActor); + } +} + +already_AddRefed<Promise> Cache::ExecuteOp(AutoChildOpArgs& aOpArgs, + ErrorResult& aRv) { + MOZ_DIAGNOSTIC_ASSERT(mActor); + + RefPtr<Promise> promise = Promise::Create(mGlobal, aRv); + if (NS_WARN_IF(!promise)) { + return nullptr; + } + + mActor->ExecuteOp(mGlobal, promise, this, aOpArgs.SendAsOpArgs()); + return promise.forget(); +} + +already_AddRefed<Promise> Cache::AddAll( + const GlobalObject& aGlobal, nsTArray<SafeRefPtr<Request>>&& aRequestList, + CallerType aCallerType, ErrorResult& aRv) { + MOZ_DIAGNOSTIC_ASSERT(mActor); + + // If there is no work to do, then resolve immediately + if (aRequestList.IsEmpty()) { + RefPtr<Promise> promise = Promise::Create(mGlobal, aRv); + if (NS_WARN_IF(!promise)) { + return nullptr; + } + + promise->MaybeResolveWithUndefined(); + return promise.forget(); + } + + AutoTArray<RefPtr<Promise>, 256> fetchList; + fetchList.SetCapacity(aRequestList.Length()); + + // Begin fetching each request in parallel. For now, if an error occurs just + // abandon our previous fetch calls. In theory we could cancel them in the + // future once fetch supports it. + + for (uint32_t i = 0; i < aRequestList.Length(); ++i) { + RequestOrUSVString requestOrString; + requestOrString.SetAsRequest() = aRequestList[i].unsafeGetRawPtr(); + RootedDictionary<RequestInit> requestInit(aGlobal.Context()); + RefPtr<Promise> fetch = + FetchRequest(mGlobal, requestOrString, requestInit, aCallerType, aRv); + if (NS_WARN_IF(aRv.Failed())) { + return nullptr; + } + + fetchList.AppendElement(std::move(fetch)); + } + + RefPtr<Promise> promise = Promise::Create(mGlobal, aRv); + if (NS_WARN_IF(aRv.Failed())) { + return nullptr; + } + + RefPtr<FetchHandler> handler = + new FetchHandler(mActor->GetWorkerRefPtr().clonePtr(), this, + std::move(aRequestList), promise); + + RefPtr<Promise> fetchPromise = + Promise::All(aGlobal.Context(), fetchList, aRv); + if (NS_WARN_IF(aRv.Failed())) { + return nullptr; + } + fetchPromise->AppendNativeHandler(handler); + + return promise.forget(); +} + +already_AddRefed<Promise> Cache::PutAll( + JSContext* aCx, const nsTArray<SafeRefPtr<Request>>& aRequestList, + const nsTArray<RefPtr<Response>>& aResponseList, ErrorResult& aRv) { + MOZ_DIAGNOSTIC_ASSERT(aRequestList.Length() == aResponseList.Length()); + + if (NS_WARN_IF(!mActor)) { + aRv.Throw(NS_ERROR_UNEXPECTED); + return nullptr; + } + + CacheChild::AutoLock actorLock(*mActor); + + AutoChildOpArgs args(this, CachePutAllArgs(), aRequestList.Length()); + + for (uint32_t i = 0; i < aRequestList.Length(); ++i) { + SafeRefPtr<InternalRequest> ir = aRequestList[i]->GetInternalRequest(); + args.Add(aCx, *ir, ReadBody, TypeErrorOnInvalidScheme, *aResponseList[i], + aRv); + if (NS_WARN_IF(aRv.Failed())) { + return nullptr; + } + } + + return ExecuteOp(args, aRv); +} + +OpenMode Cache::GetOpenMode() const { + return mNamespace == CHROME_ONLY_NAMESPACE ? OpenMode::Eager : OpenMode::Lazy; +} + +} // namespace mozilla::dom::cache |