diff options
Diffstat (limited to 'dom/clients/manager/ClientNavigateOpChild.cpp')
| -rw-r--r-- | dom/clients/manager/ClientNavigateOpChild.cpp | 334 |
1 files changed, 334 insertions, 0 deletions
diff --git a/dom/clients/manager/ClientNavigateOpChild.cpp b/dom/clients/manager/ClientNavigateOpChild.cpp new file mode 100644 index 0000000000..b1fd5fb36f --- /dev/null +++ b/dom/clients/manager/ClientNavigateOpChild.cpp @@ -0,0 +1,334 @@ +/* -*- 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 "ClientNavigateOpChild.h" + +#include "ClientState.h" +#include "ClientSource.h" +#include "ClientSourceChild.h" +#include "mozilla/dom/Document.h" +#include "mozilla/Unused.h" +#include "nsIDocShell.h" +#include "nsDocShellLoadState.h" +#include "nsIWebNavigation.h" +#include "nsIWebProgress.h" +#include "nsIWebProgressListener.h" +#include "nsNetUtil.h" +#include "nsPIDOMWindow.h" +#include "nsURLHelper.h" +#include "ReferrerInfo.h" + +namespace mozilla::dom { + +namespace { + +class NavigateLoadListener final : public nsIWebProgressListener, + public nsSupportsWeakReference { + RefPtr<ClientOpPromise::Private> mPromise; + RefPtr<nsPIDOMWindowOuter> mOuterWindow; + nsCOMPtr<nsIURI> mBaseURL; + + ~NavigateLoadListener() = default; + + public: + NavigateLoadListener(ClientOpPromise::Private* aPromise, + nsPIDOMWindowOuter* aOuterWindow, nsIURI* aBaseURL) + : mPromise(aPromise), mOuterWindow(aOuterWindow), mBaseURL(aBaseURL) { + MOZ_DIAGNOSTIC_ASSERT(mPromise); + MOZ_DIAGNOSTIC_ASSERT(mOuterWindow); + MOZ_DIAGNOSTIC_ASSERT(mBaseURL); + } + + NS_IMETHOD + OnStateChange(nsIWebProgress* aWebProgress, nsIRequest* aRequest, + uint32_t aStateFlags, nsresult aResult) override { + if (!(aStateFlags & STATE_IS_DOCUMENT) || + !(aStateFlags & (STATE_STOP | STATE_TRANSFERRING))) { + return NS_OK; + } + + aWebProgress->RemoveProgressListener(this); + + nsCOMPtr<nsIChannel> channel = do_QueryInterface(aRequest); + if (!channel) { + // This is not going to happen; how could it? + CopyableErrorResult result; + result.ThrowInvalidStateError("Bad request"); + mPromise->Reject(result, __func__); + return NS_OK; + } + + nsCOMPtr<nsIURI> channelURL; + nsresult rv = NS_GetFinalChannelURI(channel, getter_AddRefs(channelURL)); + if (NS_FAILED(rv)) { + CopyableErrorResult result; + // XXXbz We can't actually get here; NS_GetFinalChannelURI never fails in + // practice! + result.Throw(rv); + mPromise->Reject(result, __func__); + return NS_OK; + } + + nsIScriptSecurityManager* ssm = nsContentUtils::GetSecurityManager(); + MOZ_DIAGNOSTIC_ASSERT(ssm); + + // If the resulting window is not same origin, then resolve immediately + // without returning any information about the new Client. This is + // step 6.10 in the Client.navigate(url) spec. + // todo: if you intend to update CheckSameOriginURI to log the error to the + // console you also need to update the 'aFromPrivateWindow' argument. + rv = ssm->CheckSameOriginURI(mBaseURL, channelURL, false, false); + if (NS_FAILED(rv)) { + mPromise->Resolve(CopyableErrorResult(), __func__); + return NS_OK; + } + + nsPIDOMWindowInner* innerWindow = mOuterWindow->GetCurrentInnerWindow(); + MOZ_DIAGNOSTIC_ASSERT(innerWindow); + + Maybe<ClientInfo> clientInfo = innerWindow->GetClientInfo(); + MOZ_DIAGNOSTIC_ASSERT(clientInfo.isSome()); + + Maybe<ClientState> clientState = innerWindow->GetClientState(); + MOZ_DIAGNOSTIC_ASSERT(clientState.isSome()); + + // Otherwise, if the new window is same-origin we want to return a + // ClientInfoAndState object so we can provide a Client snapshot + // to the caller. This is step 6.11 and 6.12 in the Client.navigate(url) + // spec. + mPromise->Resolve( + ClientInfoAndState(clientInfo.ref().ToIPC(), clientState.ref().ToIPC()), + __func__); + + return NS_OK; + } + + NS_IMETHOD + OnProgressChange(nsIWebProgress* aWebProgress, nsIRequest* aRequest, + int32_t aCurSelfProgress, int32_t aMaxSelfProgress, + int32_t aCurTotalProgress, + int32_t aMaxTotalProgress) override { + MOZ_CRASH("Unexpected notification."); + return NS_OK; + } + + NS_IMETHOD + OnLocationChange(nsIWebProgress* aWebProgress, nsIRequest* aRequest, + nsIURI* aLocation, uint32_t aFlags) override { + MOZ_CRASH("Unexpected notification."); + return NS_OK; + } + + NS_IMETHOD + OnStatusChange(nsIWebProgress* aWebProgress, nsIRequest* aRequest, + nsresult aStatus, const char16_t* aMessage) override { + MOZ_CRASH("Unexpected notification."); + return NS_OK; + } + + NS_IMETHOD + OnSecurityChange(nsIWebProgress* aWebProgress, nsIRequest* aRequest, + uint32_t aState) override { + MOZ_CRASH("Unexpected notification."); + return NS_OK; + } + + NS_IMETHOD + OnContentBlockingEvent(nsIWebProgress* aWebProgress, nsIRequest* aRequest, + uint32_t aEvent) override { + MOZ_CRASH("Unexpected notification."); + return NS_OK; + } + + NS_DECL_ISUPPORTS +}; + +NS_IMPL_ISUPPORTS(NavigateLoadListener, nsIWebProgressListener, + nsISupportsWeakReference); + +} // anonymous namespace + +RefPtr<ClientOpPromise> ClientNavigateOpChild::DoNavigate( + const ClientNavigateOpConstructorArgs& aArgs) { + nsCOMPtr<nsPIDOMWindowInner> window; + + // Navigating the target client window will result in the original + // ClientSource being destroyed. To avoid potential UAF mistakes + // we use a small scope to access the ClientSource object. Once + // we have a strong reference to the window object we should not + // access the ClientSource again. + { + ClientSourceChild* targetActor = + static_cast<ClientSourceChild*>(aArgs.target().AsChild().get()); + MOZ_DIAGNOSTIC_ASSERT(targetActor); + + ClientSource* target = targetActor->GetSource(); + if (!target) { + CopyableErrorResult rv; + rv.ThrowInvalidStateError("Unknown Client"); + return ClientOpPromise::CreateAndReject(rv, __func__); + } + + window = target->GetInnerWindow(); + if (!window) { + CopyableErrorResult rv; + rv.ThrowInvalidStateError("Client load for a destroyed Window"); + return ClientOpPromise::CreateAndReject(rv, __func__); + } + } + + MOZ_ASSERT(NS_IsMainThread()); + + mSerialEventTarget = window->EventTargetFor(TaskCategory::Other); + + // In theory we could do the URL work before paying the IPC overhead + // cost, but in practice its easier to do it here. The ClientHandle + // may be off-main-thread while this method is guaranteed to always + // be main thread. + nsCOMPtr<nsIURI> baseURL; + nsresult rv = NS_NewURI(getter_AddRefs(baseURL), aArgs.baseURL()); + if (NS_FAILED(rv)) { + // This is rather unexpected: This is the worker URL we passed from the + // parent, so we expect this to parse fine! + CopyableErrorResult result; + result.ThrowInvalidStateError("Invalid worker URL"); + return ClientOpPromise::CreateAndReject(result, __func__); + } + + // There is an edge case for view-source url here. According to the wpt test + // windowclient-navigate.https.html, a view-source URL with a relative inner + // URL should be treated as an invalid URL. However, we will still resolve it + // into a valid view-source URL since the baseURL is involved while creating + // the URI. So, an invalid view-source URL will be treated as a valid URL + // in this case. To address this, we should not take the baseURL into account + // for the view-source URL. + bool shouldUseBaseURL = true; + nsAutoCString scheme; + if (NS_SUCCEEDED(net_ExtractURLScheme(aArgs.url(), scheme)) && + scheme.LowerCaseEqualsLiteral("view-source")) { + shouldUseBaseURL = false; + } + + nsCOMPtr<nsIURI> url; + rv = NS_NewURI(getter_AddRefs(url), aArgs.url(), nullptr, + shouldUseBaseURL ? baseURL.get() : nullptr); + if (NS_FAILED(rv)) { + // Per https://w3c.github.io/ServiceWorker/#dom-windowclient-navigate step + // 2, if the URL fails to parse, we reject with a TypeError. + nsPrintfCString err("Invalid URL \"%s\"", aArgs.url().get()); + CopyableErrorResult result; + result.ThrowTypeError(err); + return ClientOpPromise::CreateAndReject(result, __func__); + } + + if (url->GetSpecOrDefault().EqualsLiteral("about:blank")) { + CopyableErrorResult result; + result.ThrowTypeError("Navigation to \"about:blank\" is not allowed"); + return ClientOpPromise::CreateAndReject(result, __func__); + } + + RefPtr<Document> doc = window->GetExtantDoc(); + if (!doc || !doc->IsActive()) { + CopyableErrorResult result; + result.ThrowInvalidStateError("Document is not active."); + return ClientOpPromise::CreateAndReject(result, __func__); + } + + nsCOMPtr<nsIPrincipal> principal = doc->NodePrincipal(); + + nsCOMPtr<nsIDocShell> docShell = window->GetDocShell(); + nsCOMPtr<nsIWebProgress> webProgress = do_GetInterface(docShell); + if (!docShell || !webProgress) { + CopyableErrorResult result; + result.ThrowInvalidStateError( + "Document's browsing context has been discarded"); + return ClientOpPromise::CreateAndReject(result, __func__); + } + + RefPtr<nsDocShellLoadState> loadState = new nsDocShellLoadState(url); + loadState->SetTriggeringPrincipal(principal); + loadState->SetTriggeringSandboxFlags(doc->GetSandboxFlags()); + loadState->SetCsp(doc->GetCsp()); + + auto referrerInfo = MakeRefPtr<ReferrerInfo>(*doc); + loadState->SetReferrerInfo(referrerInfo); + loadState->SetLoadType(LOAD_STOP_CONTENT); + loadState->SetSourceBrowsingContext(docShell->GetBrowsingContext()); + loadState->SetLoadFlags(nsIWebNavigation::LOAD_FLAGS_NONE); + loadState->SetFirstParty(true); + loadState->SetHasValidUserGestureActivation( + doc->HasValidTransientUserGestureActivation()); + rv = docShell->LoadURI(loadState, false); + if (NS_FAILED(rv)) { + /// There are tests that try sending file:/// and mixed-content URLs + /// in here and expect them to reject with a TypeError. This does not match + /// the spec, but does match the current behavior of both us and Chrome. + /// https://github.com/w3c/ServiceWorker/issues/1500 tracks sorting that + /// out. + /// We now run security checks asynchronously, so these tests now + /// just fail to load rather than hitting this failure path. I've + /// marked them as failing for now until they get fixed to match the + /// spec. + nsPrintfCString err("Invalid URL \"%s\"", aArgs.url().get()); + CopyableErrorResult result; + result.ThrowTypeError(err); + return ClientOpPromise::CreateAndReject(result, __func__); + } + + RefPtr<ClientOpPromise::Private> promise = + new ClientOpPromise::Private(__func__); + + nsCOMPtr<nsIWebProgressListener> listener = + new NavigateLoadListener(promise, window->GetOuterWindow(), baseURL); + + rv = webProgress->AddProgressListener(listener, + nsIWebProgress::NOTIFY_STATE_DOCUMENT); + if (NS_FAILED(rv)) { + CopyableErrorResult result; + // XXXbz Can we throw something better here? + result.Throw(rv); + promise->Reject(result, __func__); + return promise; + } + + return promise->Then( + mSerialEventTarget, __func__, + [listener](const ClientOpPromise::ResolveOrRejectValue& aValue) { + return ClientOpPromise::CreateAndResolveOrReject(aValue, __func__); + }); +} + +void ClientNavigateOpChild::ActorDestroy(ActorDestroyReason aReason) { + mPromiseRequestHolder.DisconnectIfExists(); +} + +void ClientNavigateOpChild::Init(const ClientNavigateOpConstructorArgs& aArgs) { + RefPtr<ClientOpPromise> promise = DoNavigate(aArgs); + + // Normally we get the event target from the window in DoNavigate(). If a + // failure occurred, though, we may need to fall back to the current thread + // target. + if (!mSerialEventTarget) { + mSerialEventTarget = GetCurrentSerialEventTarget(); + } + + // Capturing `this` is safe here since we clear the mPromiseRequestHolder in + // ActorDestroy. + promise + ->Then( + mSerialEventTarget, __func__, + [this](const ClientOpResult& aResult) { + mPromiseRequestHolder.Complete(); + PClientNavigateOpChild::Send__delete__(this, aResult); + }, + [this](const CopyableErrorResult& aResult) { + mPromiseRequestHolder.Complete(); + PClientNavigateOpChild::Send__delete__(this, aResult); + }) + ->Track(mPromiseRequestHolder); +} + +} // namespace mozilla::dom |