mirror of
https://github.com/mozilla/gecko-dev.git
synced 2024-10-22 09:45:41 +00:00
223d7172bf
In this patch, I went through any place in DOM fetch code, where there are ReadableStreams and update the locked, disturbed, readable checks. Because we expose streams more often, we need an extra care in the use of ErrorResult objects. JS streams can now throw exceptions and we need to handle them. This patch also fixes a bug in FileStreamReader::CloseAndRelease() which could be called in case mReader creation fails.
680 lines
18 KiB
C++
680 lines
18 KiB
C++
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* vim: set ts=8 sts=2 et sw=2 tw=80: */
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/* 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 "mozilla/dom/cache/Cache.h"
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#include "mozilla/dom/Headers.h"
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#include "mozilla/dom/InternalResponse.h"
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#include "mozilla/dom/Promise.h"
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#include "mozilla/dom/PromiseNativeHandler.h"
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#include "mozilla/dom/Response.h"
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#include "mozilla/dom/WorkerPrivate.h"
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#include "mozilla/dom/CacheBinding.h"
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#include "mozilla/dom/cache/AutoUtils.h"
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#include "mozilla/dom/cache/CacheChild.h"
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#include "mozilla/dom/cache/CacheWorkerHolder.h"
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#include "mozilla/dom/cache/ReadStream.h"
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#include "mozilla/dom/DOMPrefs.h"
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#include "mozilla/ErrorResult.h"
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#include "mozilla/Preferences.h"
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#include "mozilla/Unused.h"
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#include "nsIGlobalObject.h"
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namespace mozilla {
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namespace dom {
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namespace cache {
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using mozilla::ipc::PBackgroundChild;
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namespace {
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enum class PutStatusPolicy {
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Default,
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RequireOK
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};
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bool
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IsValidPutRequestURL(const nsAString& aUrl, ErrorResult& aRv)
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{
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bool validScheme = false;
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// make a copy because ProcessURL strips the fragmet
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NS_ConvertUTF16toUTF8 url(aUrl);
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TypeUtils::ProcessURL(url, &validScheme, nullptr, nullptr, aRv);
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if (aRv.Failed()) {
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return false;
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}
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if (!validScheme) {
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aRv.ThrowTypeError<MSG_INVALID_URL_SCHEME>(NS_LITERAL_STRING("Request"),
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aUrl);
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return false;
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}
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return true;
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}
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static bool
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IsValidPutRequestMethod(const Request& aRequest, ErrorResult& aRv)
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{
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nsAutoCString method;
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aRequest.GetMethod(method);
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if (!method.LowerCaseEqualsLiteral("get")) {
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NS_ConvertASCIItoUTF16 label(method);
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aRv.ThrowTypeError<MSG_INVALID_REQUEST_METHOD>(label);
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return false;
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}
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return true;
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}
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static bool
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IsValidPutRequestMethod(const RequestOrUSVString& aRequest, ErrorResult& aRv)
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{
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// If the provided request is a string URL, then it will default to
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// a valid http method automatically.
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if (!aRequest.IsRequest()) {
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return true;
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}
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return IsValidPutRequestMethod(aRequest.GetAsRequest(), aRv);
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}
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static bool
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IsValidPutResponseStatus(Response& aResponse, PutStatusPolicy aPolicy,
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ErrorResult& aRv)
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{
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if ((aPolicy == PutStatusPolicy::RequireOK && !aResponse.Ok()) ||
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aResponse.Status() == 206) {
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uint32_t t = static_cast<uint32_t>(aResponse.Type());
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NS_ConvertASCIItoUTF16 type(ResponseTypeValues::strings[t].value,
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ResponseTypeValues::strings[t].length);
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nsAutoString status;
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status.AppendInt(aResponse.Status());
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nsAutoString url;
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aResponse.GetUrl(url);
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aRv.ThrowTypeError<MSG_CACHE_ADD_FAILED_RESPONSE>(type, status, url);
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return false;
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}
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return true;
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}
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} // namespace
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// Helper class to wait for Add()/AddAll() fetch requests to complete and
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// then perform a PutAll() with the responses. This class holds a WorkerHolder
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// to keep the Worker thread alive. This is mainly to ensure that Add/AddAll
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// act the same as other Cache operations that directly create a CacheOpChild
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// actor.
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class Cache::FetchHandler final : public PromiseNativeHandler
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{
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public:
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FetchHandler(CacheWorkerHolder* aWorkerHolder, Cache* aCache,
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nsTArray<RefPtr<Request>>&& aRequestList, Promise* aPromise)
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: mWorkerHolder(aWorkerHolder)
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, mCache(aCache)
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, mRequestList(std::move(aRequestList))
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, mPromise(aPromise)
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{
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MOZ_ASSERT_IF(!NS_IsMainThread(), mWorkerHolder);
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MOZ_DIAGNOSTIC_ASSERT(mCache);
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MOZ_DIAGNOSTIC_ASSERT(mPromise);
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}
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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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NS_ASSERT_OWNINGTHREAD(FetchHandler);
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// Stop holding the worker alive when we leave this method.
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RefPtr<CacheWorkerHolder> workerHolder;
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workerHolder.swap(mWorkerHolder);
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// Promise::All() passed an array of fetch() Promises should give us
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// an Array of Response objects. The following code unwraps these
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// JS values back to an nsTArray<RefPtr<Response>>.
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AutoTArray<RefPtr<Response>, 256> responseList;
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responseList.SetCapacity(mRequestList.Length());
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bool isArray;
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if (NS_WARN_IF(!JS_IsArrayObject(aCx, aValue, &isArray) || !isArray)) {
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Fail();
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return;
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}
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JS::Rooted<JSObject*> obj(aCx, &aValue.toObject());
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uint32_t length;
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if (NS_WARN_IF(!JS_GetArrayLength(aCx, obj, &length))) {
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Fail();
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return;
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}
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for (uint32_t i = 0; i < length; ++i) {
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JS::Rooted<JS::Value> value(aCx);
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if (NS_WARN_IF(!JS_GetElement(aCx, obj, i, &value))) {
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Fail();
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return;
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}
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if (NS_WARN_IF(!value.isObject())) {
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Fail();
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return;
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}
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JS::Rooted<JSObject*> responseObj(aCx, &value.toObject());
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RefPtr<Response> response;
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nsresult rv = UNWRAP_OBJECT(Response, responseObj, response);
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if (NS_WARN_IF(NS_FAILED(rv))) {
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Fail();
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return;
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}
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if (NS_WARN_IF(response->Type() == ResponseType::Error)) {
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Fail();
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return;
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}
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// Do not allow the convenience methods .add()/.addAll() to store failed
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// or invalid responses. A consequence of this is that these methods
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// cannot be used to store opaque or opaqueredirect responses since they
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// always expose a 0 status value.
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ErrorResult errorResult;
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if (!IsValidPutResponseStatus(*response, PutStatusPolicy::RequireOK,
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errorResult)) {
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// TODO: abort the fetch requests we have running (bug 1157434)
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mPromise->MaybeReject(errorResult);
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return;
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}
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responseList.AppendElement(std::move(response));
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}
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MOZ_DIAGNOSTIC_ASSERT(mRequestList.Length() == responseList.Length());
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// Now store the unwrapped Response list in the Cache.
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ErrorResult result;
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// TODO: Here we use the JSContext as received by the ResolvedCallback, and
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// its state could be the wrong one. The spec doesn't say anything
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// about it, yet (bug 1384006)
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RefPtr<Promise> put = mCache->PutAll(aCx, mRequestList, responseList, result);
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result.WouldReportJSException();
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if (NS_WARN_IF(result.Failed())) {
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// TODO: abort the fetch requests we have running (bug 1157434)
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mPromise->MaybeReject(result);
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return;
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}
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// Chain the Cache::Put() promise to the original promise returned to
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// the content script.
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mPromise->MaybeResolve(put);
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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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{
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NS_ASSERT_OWNINGTHREAD(FetchHandler);
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Fail();
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}
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private:
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~FetchHandler()
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{
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}
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void
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Fail()
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{
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ErrorResult rv;
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rv.ThrowTypeError<MSG_FETCH_FAILED>();
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mPromise->MaybeReject(rv);
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}
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RefPtr<CacheWorkerHolder> mWorkerHolder;
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RefPtr<Cache> mCache;
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nsTArray<RefPtr<Request>> mRequestList;
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RefPtr<Promise> mPromise;
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NS_DECL_ISUPPORTS
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};
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NS_IMPL_ISUPPORTS0(Cache::FetchHandler)
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NS_IMPL_CYCLE_COLLECTING_ADDREF(mozilla::dom::cache::Cache);
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NS_IMPL_CYCLE_COLLECTING_RELEASE(mozilla::dom::cache::Cache);
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NS_IMPL_CYCLE_COLLECTION_WRAPPERCACHE(mozilla::dom::cache::Cache, mGlobal);
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NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION(Cache)
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NS_WRAPPERCACHE_INTERFACE_MAP_ENTRY
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NS_INTERFACE_MAP_ENTRY(nsISupports)
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NS_INTERFACE_MAP_END
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Cache::Cache(nsIGlobalObject* aGlobal, CacheChild* aActor, Namespace aNamespace)
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: mGlobal(aGlobal)
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, mActor(aActor)
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, mNamespace(aNamespace)
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{
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MOZ_DIAGNOSTIC_ASSERT(mGlobal);
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MOZ_DIAGNOSTIC_ASSERT(mActor);
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MOZ_DIAGNOSTIC_ASSERT(mNamespace != INVALID_NAMESPACE);
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mActor->SetListener(this);
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}
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already_AddRefed<Promise>
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Cache::Match(JSContext* aCx, const RequestOrUSVString& aRequest,
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const CacheQueryOptions& aOptions, ErrorResult& aRv)
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{
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if (NS_WARN_IF(!mActor)) {
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aRv.Throw(NS_ERROR_UNEXPECTED);
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return nullptr;
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}
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CacheChild::AutoLock actorLock(mActor);
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RefPtr<InternalRequest> ir =
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ToInternalRequest(aCx, aRequest, IgnoreBody, aRv);
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if (NS_WARN_IF(aRv.Failed())) {
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return nullptr;
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}
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CacheQueryParams params;
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ToCacheQueryParams(params, aOptions);
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AutoChildOpArgs args(this,
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CacheMatchArgs(CacheRequest(), params, GetOpenMode()),
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1);
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args.Add(ir, IgnoreBody, IgnoreInvalidScheme, aRv);
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if (NS_WARN_IF(aRv.Failed())) {
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return nullptr;
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}
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return ExecuteOp(args, aRv);
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}
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already_AddRefed<Promise>
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Cache::MatchAll(JSContext* aCx, const Optional<RequestOrUSVString>& aRequest,
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const CacheQueryOptions& aOptions, ErrorResult& aRv)
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{
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if (NS_WARN_IF(!mActor)) {
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aRv.Throw(NS_ERROR_UNEXPECTED);
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return nullptr;
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}
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CacheChild::AutoLock actorLock(mActor);
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CacheQueryParams params;
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ToCacheQueryParams(params, aOptions);
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AutoChildOpArgs args(this,
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CacheMatchAllArgs(void_t(), params, GetOpenMode()),
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1);
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if (aRequest.WasPassed()) {
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RefPtr<InternalRequest> ir = ToInternalRequest(aCx, aRequest.Value(),
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IgnoreBody, aRv);
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if (aRv.Failed()) {
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return nullptr;
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}
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args.Add(ir, IgnoreBody, IgnoreInvalidScheme, aRv);
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if (aRv.Failed()) {
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return nullptr;
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}
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}
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return ExecuteOp(args, aRv);
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}
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already_AddRefed<Promise>
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Cache::Add(JSContext* aContext, const RequestOrUSVString& aRequest,
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CallerType aCallerType, ErrorResult& aRv)
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{
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if (NS_WARN_IF(!mActor)) {
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aRv.Throw(NS_ERROR_UNEXPECTED);
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return nullptr;
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}
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CacheChild::AutoLock actorLock(mActor);
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if (!IsValidPutRequestMethod(aRequest, aRv)) {
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return nullptr;
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}
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GlobalObject global(aContext, mGlobal->GetGlobalJSObject());
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MOZ_DIAGNOSTIC_ASSERT(!global.Failed());
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nsTArray<RefPtr<Request>> requestList(1);
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RefPtr<Request> request = Request::Constructor(global, aRequest,
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RequestInit(), aRv);
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if (NS_WARN_IF(aRv.Failed())) {
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return nullptr;
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}
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nsAutoString url;
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request->GetUrl(url);
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if (NS_WARN_IF(!IsValidPutRequestURL(url, aRv))) {
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return nullptr;
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}
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requestList.AppendElement(std::move(request));
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return AddAll(global, std::move(requestList), aCallerType, aRv);
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}
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already_AddRefed<Promise>
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Cache::AddAll(JSContext* aContext,
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const Sequence<OwningRequestOrUSVString>& aRequestList,
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CallerType aCallerType,
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ErrorResult& aRv)
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{
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if (NS_WARN_IF(!mActor)) {
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aRv.Throw(NS_ERROR_UNEXPECTED);
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return nullptr;
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}
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CacheChild::AutoLock actorLock(mActor);
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GlobalObject global(aContext, mGlobal->GetGlobalJSObject());
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MOZ_DIAGNOSTIC_ASSERT(!global.Failed());
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nsTArray<RefPtr<Request>> requestList(aRequestList.Length());
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for (uint32_t i = 0; i < aRequestList.Length(); ++i) {
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RequestOrUSVString requestOrString;
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if (aRequestList[i].IsRequest()) {
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requestOrString.SetAsRequest() = aRequestList[i].GetAsRequest();
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if (NS_WARN_IF(!IsValidPutRequestMethod(requestOrString.GetAsRequest(),
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aRv))) {
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return nullptr;
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}
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} else {
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requestOrString.SetAsUSVString().Rebind(
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aRequestList[i].GetAsUSVString().Data(),
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aRequestList[i].GetAsUSVString().Length());
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}
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RefPtr<Request> request = Request::Constructor(global, requestOrString,
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RequestInit(), aRv);
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if (NS_WARN_IF(aRv.Failed())) {
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return nullptr;
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}
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nsAutoString url;
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request->GetUrl(url);
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if (NS_WARN_IF(!IsValidPutRequestURL(url, aRv))) {
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return nullptr;
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}
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requestList.AppendElement(std::move(request));
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}
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return AddAll(global, std::move(requestList), aCallerType, aRv);
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}
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already_AddRefed<Promise>
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Cache::Put(JSContext* aCx, const RequestOrUSVString& aRequest,
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Response& aResponse, ErrorResult& aRv)
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{
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if (NS_WARN_IF(!mActor)) {
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aRv.Throw(NS_ERROR_UNEXPECTED);
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return nullptr;
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}
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CacheChild::AutoLock actorLock(mActor);
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if (NS_WARN_IF(!IsValidPutRequestMethod(aRequest, aRv))) {
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return nullptr;
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}
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if (!IsValidPutResponseStatus(aResponse, PutStatusPolicy::Default, aRv)) {
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return nullptr;
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}
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RefPtr<InternalRequest> ir = ToInternalRequest(aCx, aRequest, ReadBody, aRv);
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if (NS_WARN_IF(aRv.Failed())) {
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return nullptr;
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}
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AutoChildOpArgs args(this, CachePutAllArgs(), 1);
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args.Add(aCx, ir, ReadBody, TypeErrorOnInvalidScheme,
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aResponse, aRv);
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if (NS_WARN_IF(aRv.Failed())) {
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return nullptr;
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}
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return ExecuteOp(args, aRv);
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}
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already_AddRefed<Promise>
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Cache::Delete(JSContext* aCx, const RequestOrUSVString& aRequest,
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const CacheQueryOptions& aOptions, ErrorResult& aRv)
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{
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if (NS_WARN_IF(!mActor)) {
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aRv.Throw(NS_ERROR_UNEXPECTED);
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return nullptr;
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}
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CacheChild::AutoLock actorLock(mActor);
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RefPtr<InternalRequest> ir =
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ToInternalRequest(aCx, aRequest, IgnoreBody, aRv);
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if (NS_WARN_IF(aRv.Failed())) {
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return nullptr;
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}
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CacheQueryParams params;
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ToCacheQueryParams(params, aOptions);
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AutoChildOpArgs args(this, CacheDeleteArgs(CacheRequest(), params), 1);
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args.Add(ir, IgnoreBody, IgnoreInvalidScheme, aRv);
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if (NS_WARN_IF(aRv.Failed())) {
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return nullptr;
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}
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return ExecuteOp(args, aRv);
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}
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already_AddRefed<Promise>
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Cache::Keys(JSContext* aCx, const Optional<RequestOrUSVString>& aRequest,
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const CacheQueryOptions& aOptions, ErrorResult& aRv)
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{
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if (NS_WARN_IF(!mActor)) {
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aRv.Throw(NS_ERROR_UNEXPECTED);
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return nullptr;
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}
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CacheChild::AutoLock actorLock(mActor);
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CacheQueryParams params;
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ToCacheQueryParams(params, aOptions);
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AutoChildOpArgs args(this,
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CacheKeysArgs(void_t(), params, GetOpenMode()),
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1);
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if (aRequest.WasPassed()) {
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RefPtr<InternalRequest> ir =
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ToInternalRequest(aCx, aRequest.Value(), IgnoreBody, aRv);
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if (NS_WARN_IF(aRv.Failed())) {
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return nullptr;
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}
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args.Add(ir, IgnoreBody, IgnoreInvalidScheme, aRv);
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if (NS_WARN_IF(aRv.Failed())) {
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return nullptr;
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}
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}
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return ExecuteOp(args, aRv);
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}
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nsISupports*
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Cache::GetParentObject() const
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{
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return mGlobal;
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}
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JSObject*
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Cache::WrapObject(JSContext* aContext, JS::Handle<JSObject*> aGivenProto)
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{
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return Cache_Binding::Wrap(aContext, this, aGivenProto);
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}
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void
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|
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<RefPtr<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];
|
|
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->GetWorkerHolder(), 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<RefPtr<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) {
|
|
RefPtr<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 cache
|
|
} // namespace dom
|
|
} // namespace mozilla
|