gecko-dev/dom/cache/Cache.cpp

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/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=8 sts=2 et sw=2 tw=80: */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#include "mozilla/dom/cache/Cache.h"
#include "mozilla/dom/Headers.h"
#include "mozilla/dom/InternalResponse.h"
#include "mozilla/dom/Promise.h"
#include "mozilla/dom/Response.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/ReadStream.h"
#include "mozilla/dom/cache/TypeUtils.h"
#include "mozilla/ErrorResult.h"
#include "mozilla/Preferences.h"
#include "mozilla/unused.h"
#include "nsIGlobalObject.h"
#include "nsNetUtil.h"
namespace {
using mozilla::ErrorResult;
using mozilla::dom::MSG_INVALID_REQUEST_METHOD;
using mozilla::dom::OwningRequestOrUSVString;
using mozilla::dom::Request;
using mozilla::dom::RequestOrUSVString;
static bool
IsValidPutRequestMethod(const Request& aRequest, ErrorResult& aRv)
{
nsAutoCString method;
aRequest.GetMethod(method);
bool valid = method.LowerCaseEqualsLiteral("get");
if (!valid) {
NS_ConvertASCIItoUTF16 label(method);
aRv.ThrowTypeError(MSG_INVALID_REQUEST_METHOD, &label);
}
return valid;
}
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
IsValidPutRequestMethod(const OwningRequestOrUSVString& aRequest,
ErrorResult& aRv)
{
if (!aRequest.IsRequest()) {
return true;
}
return IsValidPutRequestMethod(*aRequest.GetAsRequest().get(), aRv);
}
} // anonymous namespace
namespace mozilla {
namespace dom {
namespace cache {
using mozilla::ErrorResult;
using mozilla::unused;
using mozilla::dom::workers::GetCurrentThreadWorkerPrivate;
using mozilla::dom::workers::WorkerPrivate;
NS_IMPL_CYCLE_COLLECTING_ADDREF(mozilla::dom::cache::Cache);
NS_IMPL_CYCLE_COLLECTING_RELEASE(mozilla::dom::cache::Cache);
NS_IMPL_CYCLE_COLLECTION_WRAPPERCACHE(Cache, mGlobal, mRequestPromises)
NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION(Cache)
NS_WRAPPERCACHE_INTERFACE_MAP_ENTRY
NS_INTERFACE_MAP_END
Cache::Cache(nsIGlobalObject* aGlobal, CacheChild* aActor)
: mGlobal(aGlobal)
, mActor(aActor)
{
MOZ_ASSERT(mGlobal);
MOZ_ASSERT(mActor);
mActor->SetListener(this);
}
already_AddRefed<Promise>
Cache::Match(const RequestOrUSVString& aRequest,
const CacheQueryOptions& aOptions, ErrorResult& aRv)
{
MOZ_ASSERT(mActor);
nsRefPtr<Promise> promise = Promise::Create(mGlobal, aRv);
if (!promise) {
return nullptr;
}
nsRefPtr<InternalRequest> ir = ToInternalRequest(aRequest, IgnoreBody, aRv);
if (aRv.Failed()) {
return nullptr;
}
AutoChildRequest request(this);
request.Add(ir, IgnoreBody, PassThroughReferrer, IgnoreInvalidScheme, aRv);
if (aRv.Failed()) {
return nullptr;
}
PCacheQueryParams params;
ToPCacheQueryParams(params, aOptions);
RequestId requestId = AddRequestPromise(promise, aRv);
unused << mActor->SendMatch(requestId, request.SendAsRequest(), params);
return promise.forget();
}
already_AddRefed<Promise>
Cache::MatchAll(const Optional<RequestOrUSVString>& aRequest,
const CacheQueryOptions& aOptions, ErrorResult& aRv)
{
MOZ_ASSERT(mActor);
nsRefPtr<Promise> promise = Promise::Create(mGlobal, aRv);
if (!promise) {
return nullptr;
}
AutoChildRequest request(this);
if (aRequest.WasPassed()) {
nsRefPtr<InternalRequest> ir = ToInternalRequest(aRequest.Value(),
IgnoreBody, aRv);
if (aRv.Failed()) {
return nullptr;
}
request.Add(ir, IgnoreBody, PassThroughReferrer, IgnoreInvalidScheme, aRv);
if (aRv.Failed()) {
return nullptr;
}
}
PCacheQueryParams params;
ToPCacheQueryParams(params, aOptions);
RequestId requestId = AddRequestPromise(promise, aRv);
unused << mActor->SendMatchAll(requestId, request.SendAsRequestOrVoid(),
params);
return promise.forget();
}
already_AddRefed<Promise>
Cache::Add(const RequestOrUSVString& aRequest, ErrorResult& aRv)
{
MOZ_ASSERT(mActor);
if (!IsValidPutRequestMethod(aRequest, aRv)) {
return nullptr;
}
nsRefPtr<Promise> promise = Promise::Create(mGlobal, aRv);
if (!promise) {
return nullptr;
}
nsRefPtr<InternalRequest> ir = ToInternalRequest(aRequest, ReadBody, aRv);
if (aRv.Failed()) {
return nullptr;
}
AutoChildRequestList requests(this, 1);
requests.Add(ir, ReadBody, ExpandReferrer, NetworkErrorOnInvalidScheme, aRv);
if (aRv.Failed()) {
return nullptr;
}
RequestId requestId = AddRequestPromise(promise, aRv);
unused << mActor->SendAddAll(requestId, requests.SendAsRequestList());
return promise.forget();
}
already_AddRefed<Promise>
Cache::AddAll(const Sequence<OwningRequestOrUSVString>& aRequests,
ErrorResult& aRv)
{
MOZ_ASSERT(mActor);
nsRefPtr<Promise> promise = Promise::Create(mGlobal, aRv);
if (!promise) {
return nullptr;
}
// If there is no work to do, then resolve immediately
if (aRequests.IsEmpty()) {
promise->MaybeResolve(JS::UndefinedHandleValue);
return promise.forget();
}
AutoChildRequestList requests(this, aRequests.Length());
for (uint32_t i = 0; i < aRequests.Length(); ++i) {
if (!IsValidPutRequestMethod(aRequests[i], aRv)) {
return nullptr;
}
nsRefPtr<InternalRequest> ir = ToInternalRequest(aRequests[i], ReadBody,
aRv);
if (aRv.Failed()) {
return nullptr;
}
requests.Add(ir, ReadBody, ExpandReferrer, NetworkErrorOnInvalidScheme,
aRv);
if (aRv.Failed()) {
return nullptr;
}
}
RequestId requestId = AddRequestPromise(promise, aRv);
unused << mActor->SendAddAll(requestId, requests.SendAsRequestList());
return promise.forget();
}
already_AddRefed<Promise>
Cache::Put(const RequestOrUSVString& aRequest, Response& aResponse,
ErrorResult& aRv)
{
MOZ_ASSERT(mActor);
if (!IsValidPutRequestMethod(aRequest, aRv)) {
return nullptr;
}
nsRefPtr<Promise> promise = Promise::Create(mGlobal, aRv);
if (!promise) {
return nullptr;
}
nsRefPtr<InternalRequest> ir = ToInternalRequest(aRequest, ReadBody, aRv);
if (aRv.Failed()) {
return nullptr;
}
AutoChildRequestResponse put(this);
put.Add(ir, ReadBody, PassThroughReferrer, TypeErrorOnInvalidScheme, aRv);
if (aRv.Failed()) {
return nullptr;
}
put.Add(aResponse, aRv);
if (aRv.Failed()) {
return nullptr;
}
RequestId requestId = AddRequestPromise(promise, aRv);
unused << mActor->SendPut(requestId, put.SendAsRequestResponse());
return promise.forget();
}
already_AddRefed<Promise>
Cache::Delete(const RequestOrUSVString& aRequest,
const CacheQueryOptions& aOptions, ErrorResult& aRv)
{
MOZ_ASSERT(mActor);
nsRefPtr<Promise> promise = Promise::Create(mGlobal, aRv);
if (!promise) {
return nullptr;
}
nsRefPtr<InternalRequest> ir = ToInternalRequest(aRequest, IgnoreBody, aRv);
if (aRv.Failed()) {
return nullptr;
}
AutoChildRequest request(this);
request.Add(ir, IgnoreBody, PassThroughReferrer, IgnoreInvalidScheme, aRv);
if (aRv.Failed()) {
return nullptr;
}
PCacheQueryParams params;
ToPCacheQueryParams(params, aOptions);
RequestId requestId = AddRequestPromise(promise, aRv);
unused << mActor->SendDelete(requestId, request.SendAsRequest(), params);
return promise.forget();
}
already_AddRefed<Promise>
Cache::Keys(const Optional<RequestOrUSVString>& aRequest,
const CacheQueryOptions& aOptions, ErrorResult& aRv)
{
MOZ_ASSERT(mActor);
nsRefPtr<Promise> promise = Promise::Create(mGlobal, aRv);
if (!promise) {
return nullptr;
}
AutoChildRequest request(this);
if (aRequest.WasPassed()) {
nsRefPtr<InternalRequest> ir = ToInternalRequest(aRequest.Value(),
IgnoreBody, aRv);
if (aRv.Failed()) {
return nullptr;
}
request.Add(ir, IgnoreBody, PassThroughReferrer, IgnoreInvalidScheme, aRv);
if (aRv.Failed()) {
return nullptr;
}
}
PCacheQueryParams params;
ToPCacheQueryParams(params, aOptions);
RequestId requestId = AddRequestPromise(promise, aRv);
unused << mActor->SendKeys(requestId, request.SendAsRequestOrVoid(), params);
return promise.forget();
}
// static
bool
Cache::PrefEnabled(JSContext* aCx, JSObject* aObj)
{
using mozilla::dom::workers::WorkerPrivate;
using mozilla::dom::workers::GetWorkerPrivateFromContext;
// If we're on the main thread, then check the pref directly.
if (NS_IsMainThread()) {
bool enabled = false;
Preferences::GetBool("dom.caches.enabled", &enabled);
return enabled;
}
// Otherwise check the pref via the work private helper
WorkerPrivate* workerPrivate = GetWorkerPrivateFromContext(aCx);
if (!workerPrivate) {
return false;
}
return workerPrivate->DOMCachesEnabled();
}
nsISupports*
Cache::GetParentObject() const
{
return mGlobal;
}
JSObject*
Cache::WrapObject(JSContext* aContext)
{
return CacheBinding::Wrap(aContext, this);
}
void
Cache::DestroyInternal(CacheChild* aActor)
{
MOZ_ASSERT(mActor);
MOZ_ASSERT(mActor == aActor);
mActor->ClearListener();
mActor = nullptr;
}
void
Cache::RecvMatchResponse(RequestId aRequestId, nsresult aRv,
const PCacheResponseOrVoid& aResponse)
{
// Convert the response immediately if its present. This ensures that
// any stream actors are cleaned up, even if we error out below.
nsRefPtr<Response> response;
if (aResponse.type() == PCacheResponseOrVoid::TPCacheResponse) {
response = ToResponse(aResponse);
}
nsRefPtr<Promise> promise = RemoveRequestPromise(aRequestId);
if (NS_FAILED(aRv)) {
promise->MaybeReject(aRv);
return;
}
if (!response) {
promise->MaybeResolve(JS::UndefinedHandleValue);
return;
}
promise->MaybeResolve(response);
}
void
Cache::RecvMatchAllResponse(RequestId aRequestId, nsresult aRv,
const nsTArray<PCacheResponse>& aResponses)
{
// Convert responses immediately. This ensures that any stream actors are
// cleaned up, even if we error out below.
nsAutoTArray<nsRefPtr<Response>, 256> responses;
responses.SetCapacity(aResponses.Length());
for (uint32_t i = 0; i < aResponses.Length(); ++i) {
nsRefPtr<Response> response = ToResponse(aResponses[i]);
responses.AppendElement(response.forget());
}
nsRefPtr<Promise> promise = RemoveRequestPromise(aRequestId);
if (NS_FAILED(aRv)) {
promise->MaybeReject(aRv);
return;
}
promise->MaybeResolve(responses);
}
void
Cache::RecvAddAllResponse(RequestId aRequestId, nsresult aRv)
{
nsRefPtr<Promise> promise = RemoveRequestPromise(aRequestId);
if (NS_FAILED(aRv)) {
promise->MaybeReject(aRv);
return;
}
promise->MaybeResolve(JS::UndefinedHandleValue);
}
void
Cache::RecvPutResponse(RequestId aRequestId, nsresult aRv)
{
nsRefPtr<Promise> promise = RemoveRequestPromise(aRequestId);
if (NS_FAILED(aRv)) {
promise->MaybeReject(aRv);
return;
}
promise->MaybeResolve(JS::UndefinedHandleValue);
}
void
Cache::RecvDeleteResponse(RequestId aRequestId, nsresult aRv, bool aSuccess)
{
nsRefPtr<Promise> promise = RemoveRequestPromise(aRequestId);
if (NS_FAILED(aRv)) {
promise->MaybeReject(aRv);
return;
}
promise->MaybeResolve(aSuccess);
}
void
Cache::RecvKeysResponse(RequestId aRequestId, nsresult aRv,
const nsTArray<PCacheRequest>& aRequests)
{
// Convert requests immediately. This ensures that any stream actors are
// cleaned up, even if we error out below.
nsAutoTArray<nsRefPtr<Request>, 256> requests;
requests.SetCapacity(aRequests.Length());
for (uint32_t i = 0; i < aRequests.Length(); ++i) {
nsRefPtr<Request> request = ToRequest(aRequests[i]);
requests.AppendElement(request.forget());
}
nsRefPtr<Promise> promise = RemoveRequestPromise(aRequestId);
if (NS_FAILED(aRv)) {
promise->MaybeReject(aRv);
return;
}
promise->MaybeResolve(requests);
}
nsIGlobalObject*
Cache::GetGlobalObject() const
{
return mGlobal;
}
#ifdef DEBUG
void
Cache::AssertOwningThread() const
{
NS_ASSERT_OWNINGTHREAD(Cache);
}
#endif
void
Cache::ResolvedCallback(JSContext* aCx, JS::Handle<JS::Value> aValue)
{
// Do nothing. The Promise will automatically drop the ref to us after
// calling the callback. This is what we want as we only registered in order
// to be held alive via the Promise handle.
}
void
Cache::RejectedCallback(JSContext* aCx, JS::Handle<JS::Value> aValue)
{
// Do nothing. The Promise will automatically drop the ref to us after
// calling the callback. This is what we want as we only registered in order
// to be held alive via the Promise handle.
}
Cache::~Cache()
{
if (mActor) {
mActor->StartDestroy();
// DestroyInternal() is called synchronously by StartDestroy(). So we
// should have already cleared the mActor.
MOZ_ASSERT(!mActor);
}
}
RequestId
Cache::AddRequestPromise(Promise* aPromise, ErrorResult& aRv)
{
MOZ_ASSERT(aPromise);
MOZ_ASSERT(!mRequestPromises.Contains(aPromise));
// Register ourself as a promise handler so that the promise will hold us
// alive. This allows the client code to drop the ref to the Cache
// object and just keep their promise. This is fairly common in promise
// chaining code.
aPromise->AppendNativeHandler(this);
mRequestPromises.AppendElement(aPromise);
// (Ab)use the promise pointer as our request ID. This is a fast, thread-safe
// way to get a unique ID for the promise to be resolved later.
return reinterpret_cast<RequestId>(aPromise);
}
already_AddRefed<Promise>
Cache::RemoveRequestPromise(RequestId aRequestId)
{
MOZ_ASSERT(aRequestId != INVALID_REQUEST_ID);
for (uint32_t i = 0; i < mRequestPromises.Length(); ++i) {
nsRefPtr<Promise>& promise = mRequestPromises.ElementAt(i);
// To be safe, only cast promise pointers to our integer RequestId
// type and never cast an integer to a pointer.
if (aRequestId == reinterpret_cast<RequestId>(promise.get())) {
nsRefPtr<Promise> ref;
ref.swap(promise);
mRequestPromises.RemoveElementAt(i);
return ref.forget();
}
}
MOZ_ASSERT_UNREACHABLE("Received response without a matching promise!");
return nullptr;
}
} // namespace cache
} // namespace dom
} // namespace mozilla