mirror of
https://github.com/mozilla/gecko-dev.git
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22d1d975b2
Previously this load would be allowed due to the "web-controlled" check failing to reject the load. This patch instead bases it on the docshell.newWindowTarget flag, which is set for the first load in a new DocShell due to a call to window.open or target=_blank. This required making the external protocol channel be a property bag so that the flag can be set on the channel. In the future we may want to switch this flag to being set in a more generic way which is less specific to the channel. Differential Revision: https://phabricator.services.mozilla.com/D217484
533 lines
16 KiB
C++
533 lines
16 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
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* vim:set ts=2 sts=2 sw=2 et cin:
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*
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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/ContentChild.h"
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#include "mozilla/BasePrincipal.h"
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#include "mozilla/ScopeExit.h"
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#include "nsIURI.h"
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#include "nsExternalProtocolHandler.h"
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#include "nsString.h"
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#include "nsReadableUtils.h"
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#include "nsCOMPtr.h"
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#include "nsContentUtils.h"
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#include "nsServiceManagerUtils.h"
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#include "nsIInterfaceRequestor.h"
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#include "nsIInterfaceRequestorUtils.h"
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#include "nsIRedirectHistoryEntry.h"
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#include "nsNetUtil.h"
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#include "nsContentSecurityManager.h"
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#include "nsExternalHelperAppService.h"
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#include "nsHashPropertyBag.h"
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// used to dispatch urls to default protocol handlers
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#include "nsCExternalHandlerService.h"
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#include "nsIExternalProtocolService.h"
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#include "nsIChildChannel.h"
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#include "nsIParentChannel.h"
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class nsILoadInfo;
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////////////////////////////////////////////////////////////////////////
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// a stub channel implemenation which will map calls to AsyncRead and
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// OpenInputStream to calls in the OS for loading the url.
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////////////////////////////////////////////////////////////////////////
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class nsExtProtocolChannel : public nsHashPropertyBag,
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public nsIChannel,
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public nsIChildChannel,
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public nsIParentChannel {
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public:
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NS_DECL_ISUPPORTS_INHERITED
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NS_DECL_NSICHANNEL
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NS_DECL_NSIREQUESTOBSERVER
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NS_DECL_NSISTREAMLISTENER
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NS_DECL_NSIREQUEST
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NS_DECL_NSICHILDCHANNEL
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NS_DECL_NSIPARENTCHANNEL
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nsExtProtocolChannel(nsIURI* aURI, nsILoadInfo* aLoadInfo);
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private:
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virtual ~nsExtProtocolChannel();
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nsresult OpenURL();
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void Finish(nsresult aResult);
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nsCOMPtr<nsIURI> mUrl;
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nsCOMPtr<nsIURI> mOriginalURI;
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nsresult mStatus;
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nsLoadFlags mLoadFlags;
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bool mWasOpened;
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bool mCanceled;
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// Set true (as a result of ConnectParent invoked from child process)
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// when this channel is on the parent process and is being used as
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// a redirect target channel. It turns AsyncOpen into a no-op since
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// we do it on the child.
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bool mConnectedParent;
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nsCOMPtr<nsIInterfaceRequestor> mCallbacks;
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nsCOMPtr<nsILoadGroup> mLoadGroup;
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nsCOMPtr<nsILoadInfo> mLoadInfo;
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nsCOMPtr<nsIStreamListener> mListener;
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};
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NS_IMPL_ADDREF_INHERITED(nsExtProtocolChannel, nsHashPropertyBag)
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NS_IMPL_RELEASE_INHERITED(nsExtProtocolChannel, nsHashPropertyBag)
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NS_INTERFACE_MAP_BEGIN(nsExtProtocolChannel)
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NS_INTERFACE_MAP_ENTRY(nsIChannel)
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NS_INTERFACE_MAP_ENTRY(nsIRequest)
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NS_INTERFACE_MAP_ENTRY(nsIChildChannel)
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NS_INTERFACE_MAP_ENTRY(nsIParentChannel)
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NS_INTERFACE_MAP_ENTRY(nsIStreamListener)
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NS_INTERFACE_MAP_ENTRY(nsIRequestObserver)
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NS_INTERFACE_MAP_END_INHERITING(nsHashPropertyBag)
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nsExtProtocolChannel::nsExtProtocolChannel(nsIURI* aURI, nsILoadInfo* aLoadInfo)
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: mUrl(aURI),
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mOriginalURI(aURI),
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mStatus(NS_OK),
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mLoadFlags(nsIRequest::LOAD_NORMAL),
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mWasOpened(false),
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mCanceled(false),
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mConnectedParent(false),
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mLoadInfo(aLoadInfo) {}
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nsExtProtocolChannel::~nsExtProtocolChannel() {}
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NS_IMETHODIMP nsExtProtocolChannel::GetLoadGroup(nsILoadGroup** aLoadGroup) {
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NS_IF_ADDREF(*aLoadGroup = mLoadGroup);
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return NS_OK;
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}
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NS_IMETHODIMP nsExtProtocolChannel::SetLoadGroup(nsILoadGroup* aLoadGroup) {
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mLoadGroup = aLoadGroup;
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return NS_OK;
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}
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NS_IMETHODIMP nsExtProtocolChannel::GetNotificationCallbacks(
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nsIInterfaceRequestor** aCallbacks) {
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NS_IF_ADDREF(*aCallbacks = mCallbacks);
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return NS_OK;
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}
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NS_IMETHODIMP nsExtProtocolChannel::SetNotificationCallbacks(
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nsIInterfaceRequestor* aCallbacks) {
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mCallbacks = aCallbacks;
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return NS_OK;
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}
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NS_IMETHODIMP
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nsExtProtocolChannel::GetSecurityInfo(
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nsITransportSecurityInfo** aSecurityInfo) {
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*aSecurityInfo = nullptr;
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return NS_OK;
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}
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NS_IMETHODIMP nsExtProtocolChannel::GetOriginalURI(nsIURI** aURI) {
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NS_ADDREF(*aURI = mOriginalURI);
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return NS_OK;
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}
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NS_IMETHODIMP nsExtProtocolChannel::SetOriginalURI(nsIURI* aURI) {
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NS_ENSURE_ARG_POINTER(aURI);
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mOriginalURI = aURI;
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return NS_OK;
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}
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NS_IMETHODIMP nsExtProtocolChannel::GetURI(nsIURI** aURI) {
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*aURI = mUrl;
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NS_IF_ADDREF(*aURI);
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return NS_OK;
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}
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nsresult nsExtProtocolChannel::OpenURL() {
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nsresult rv = NS_ERROR_FAILURE;
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nsCOMPtr<nsIExternalProtocolService> extProtService(
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do_GetService(NS_EXTERNALPROTOCOLSERVICE_CONTRACTID));
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auto cleanup = mozilla::MakeScopeExit([&] {
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mCallbacks = nullptr;
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mListener = nullptr;
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});
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if (extProtService) {
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nsAutoCString urlScheme;
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mUrl->GetScheme(urlScheme);
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bool haveHandler = false;
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extProtService->ExternalProtocolHandlerExists(urlScheme.get(),
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&haveHandler);
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if (!haveHandler) {
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return NS_ERROR_UNKNOWN_PROTOCOL;
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}
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RefPtr<mozilla::dom::BrowsingContext> ctx;
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rv = mLoadInfo->GetTargetBrowsingContext(getter_AddRefs(ctx));
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if (NS_FAILED(rv)) {
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return rv;
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}
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RefPtr<nsIPrincipal> triggeringPrincipal = mLoadInfo->TriggeringPrincipal();
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RefPtr<nsIPrincipal> redirectPrincipal;
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if (!mLoadInfo->RedirectChain().IsEmpty()) {
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mLoadInfo->RedirectChain().LastElement()->GetPrincipal(
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getter_AddRefs(redirectPrincipal));
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}
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bool newWindowTarget = false;
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GetPropertyAsBool(u"docshell.newWindowTarget"_ns, &newWindowTarget);
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rv = extProtService->LoadURI(mUrl, triggeringPrincipal, redirectPrincipal,
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ctx, mLoadInfo->GetLoadTriggeredFromExternal(),
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mLoadInfo->GetHasValidUserGestureActivation(),
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newWindowTarget);
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if (NS_SUCCEEDED(rv) && mListener) {
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mStatus = NS_ERROR_NO_CONTENT;
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RefPtr<nsExtProtocolChannel> self = this;
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nsCOMPtr<nsIStreamListener> listener = mListener;
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MessageLoop::current()->PostTask(NS_NewRunnableFunction(
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"nsExtProtocolChannel::OpenURL", [self, listener]() {
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listener->OnStartRequest(self);
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listener->OnStopRequest(self, self->mStatus);
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}));
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}
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}
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return rv;
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}
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NS_IMETHODIMP nsExtProtocolChannel::Open(nsIInputStream** aStream) {
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nsCOMPtr<nsIStreamListener> listener;
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nsresult rv =
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nsContentSecurityManager::doContentSecurityCheck(this, listener);
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NS_ENSURE_SUCCESS(rv, rv);
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return OpenURL();
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}
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NS_IMETHODIMP nsExtProtocolChannel::AsyncOpen(nsIStreamListener* aListener) {
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nsCOMPtr<nsIStreamListener> listener = aListener;
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nsresult rv =
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nsContentSecurityManager::doContentSecurityCheck(this, listener);
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if (NS_FAILED(rv)) {
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mCallbacks = nullptr;
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return rv;
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}
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if (mConnectedParent) {
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return NS_OK;
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}
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MOZ_ASSERT(
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mLoadInfo->GetSecurityMode() == 0 ||
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mLoadInfo->GetInitialSecurityCheckDone() ||
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(mLoadInfo->GetSecurityMode() ==
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nsILoadInfo::SEC_ALLOW_CROSS_ORIGIN_SEC_CONTEXT_IS_NULL &&
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mLoadInfo->GetLoadingPrincipal() &&
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mLoadInfo->GetLoadingPrincipal()->IsSystemPrincipal()),
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"security flags in loadInfo but doContentSecurityCheck() not called");
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NS_ENSURE_ARG_POINTER(listener);
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NS_ENSURE_TRUE(!mWasOpened, NS_ERROR_ALREADY_OPENED);
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mWasOpened = true;
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mListener = listener;
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return OpenURL();
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}
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NS_IMETHODIMP nsExtProtocolChannel::GetLoadFlags(nsLoadFlags* aLoadFlags) {
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*aLoadFlags = mLoadFlags;
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return NS_OK;
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}
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NS_IMETHODIMP nsExtProtocolChannel::SetLoadFlags(nsLoadFlags aLoadFlags) {
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mLoadFlags = aLoadFlags;
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return NS_OK;
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}
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NS_IMETHODIMP nsExtProtocolChannel::GetTRRMode(nsIRequest::TRRMode* aTRRMode) {
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return GetTRRModeImpl(aTRRMode);
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}
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NS_IMETHODIMP nsExtProtocolChannel::SetTRRMode(nsIRequest::TRRMode aTRRMode) {
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return SetTRRModeImpl(aTRRMode);
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}
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NS_IMETHODIMP nsExtProtocolChannel::GetIsDocument(bool* aIsDocument) {
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return NS_GetIsDocumentChannel(this, aIsDocument);
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}
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NS_IMETHODIMP nsExtProtocolChannel::GetContentType(nsACString& aContentType) {
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return NS_ERROR_NOT_IMPLEMENTED;
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}
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NS_IMETHODIMP nsExtProtocolChannel::SetContentType(
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const nsACString& aContentType) {
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return NS_ERROR_FAILURE;
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}
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NS_IMETHODIMP nsExtProtocolChannel::GetContentCharset(
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nsACString& aContentCharset) {
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return NS_ERROR_NOT_IMPLEMENTED;
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}
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NS_IMETHODIMP nsExtProtocolChannel::SetContentCharset(
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const nsACString& aContentCharset) {
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return NS_ERROR_NOT_IMPLEMENTED;
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}
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NS_IMETHODIMP nsExtProtocolChannel::GetContentDisposition(
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uint32_t* aContentDisposition) {
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return NS_ERROR_NOT_AVAILABLE;
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}
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NS_IMETHODIMP nsExtProtocolChannel::SetContentDisposition(
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uint32_t aContentDisposition) {
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return NS_ERROR_NOT_AVAILABLE;
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}
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NS_IMETHODIMP nsExtProtocolChannel::GetContentDispositionFilename(
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nsAString& aContentDispositionFilename) {
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return NS_ERROR_NOT_AVAILABLE;
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}
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NS_IMETHODIMP nsExtProtocolChannel::SetContentDispositionFilename(
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const nsAString& aContentDispositionFilename) {
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return NS_ERROR_NOT_AVAILABLE;
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}
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NS_IMETHODIMP nsExtProtocolChannel::GetContentDispositionHeader(
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nsACString& aContentDispositionHeader) {
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return NS_ERROR_NOT_AVAILABLE;
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}
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NS_IMETHODIMP nsExtProtocolChannel::GetContentLength(int64_t* aContentLength) {
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*aContentLength = -1;
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return NS_OK;
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}
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NS_IMETHODIMP
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nsExtProtocolChannel::SetContentLength(int64_t aContentLength) {
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MOZ_ASSERT_UNREACHABLE("SetContentLength");
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return NS_ERROR_NOT_IMPLEMENTED;
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}
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NS_IMETHODIMP nsExtProtocolChannel::GetOwner(nsISupports** aPrincipal) {
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return NS_ERROR_NOT_IMPLEMENTED;
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}
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NS_IMETHODIMP nsExtProtocolChannel::SetOwner(nsISupports* aPrincipal) {
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return NS_ERROR_NOT_IMPLEMENTED;
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}
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NS_IMETHODIMP nsExtProtocolChannel::GetLoadInfo(nsILoadInfo** aLoadInfo) {
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NS_IF_ADDREF(*aLoadInfo = mLoadInfo);
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return NS_OK;
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}
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NS_IMETHODIMP nsExtProtocolChannel::SetLoadInfo(nsILoadInfo* aLoadInfo) {
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MOZ_RELEASE_ASSERT(aLoadInfo, "loadinfo can't be null");
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mLoadInfo = aLoadInfo;
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return NS_OK;
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}
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////////////////////////////////////////////////////////////////////////////////
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// From nsIRequest
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////////////////////////////////////////////////////////////////////////////////
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NS_IMETHODIMP nsExtProtocolChannel::GetName(nsACString& result) {
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return mUrl->GetSpec(result);
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}
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NS_IMETHODIMP nsExtProtocolChannel::IsPending(bool* result) {
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*result = false;
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return NS_OK;
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}
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NS_IMETHODIMP nsExtProtocolChannel::GetStatus(nsresult* status) {
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*status = mStatus;
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return NS_OK;
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}
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NS_IMETHODIMP nsExtProtocolChannel::SetCanceledReason(
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const nsACString& aReason) {
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return SetCanceledReasonImpl(aReason);
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}
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NS_IMETHODIMP nsExtProtocolChannel::GetCanceledReason(nsACString& aReason) {
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return GetCanceledReasonImpl(aReason);
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}
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NS_IMETHODIMP nsExtProtocolChannel::CancelWithReason(
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nsresult aStatus, const nsACString& aReason) {
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return CancelWithReasonImpl(aStatus, aReason);
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}
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NS_IMETHODIMP nsExtProtocolChannel::Cancel(nsresult status) {
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if (NS_SUCCEEDED(mStatus)) {
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mStatus = status;
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}
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mCanceled = true;
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return NS_OK;
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}
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NS_IMETHODIMP nsExtProtocolChannel::GetCanceled(bool* aCanceled) {
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*aCanceled = mCanceled;
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return NS_OK;
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}
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NS_IMETHODIMP nsExtProtocolChannel::Suspend() {
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MOZ_ASSERT_UNREACHABLE("Suspend");
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return NS_ERROR_NOT_IMPLEMENTED;
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}
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NS_IMETHODIMP nsExtProtocolChannel::Resume() {
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MOZ_ASSERT_UNREACHABLE("Resume");
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return NS_ERROR_NOT_IMPLEMENTED;
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}
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///////////////////////////////////////////////////////////////////////
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// From nsIChildChannel
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//////////////////////////////////////////////////////////////////////
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NS_IMETHODIMP nsExtProtocolChannel::ConnectParent(uint32_t registrarId) {
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mozilla::dom::ContentChild::GetSingleton()
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->SendExtProtocolChannelConnectParent(registrarId);
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return NS_OK;
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}
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NS_IMETHODIMP nsExtProtocolChannel::CompleteRedirectSetup(
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nsIStreamListener* listener) {
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// For redirects to external protocols we AsyncOpen on the child
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// (not the parent) because child channel has the right docshell
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// (which is needed for the select dialog).
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return AsyncOpen(listener);
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}
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///////////////////////////////////////////////////////////////////////
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// From nsIParentChannel (derives from nsIStreamListener)
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//////////////////////////////////////////////////////////////////////
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NS_IMETHODIMP nsExtProtocolChannel::SetParentListener(
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mozilla::net::ParentChannelListener* aListener) {
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// This is called as part of the connect parent operation from
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// ContentParent::RecvExtProtocolChannelConnectParent. Setting
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// this flag tells this channel to not proceed and makes AsyncOpen
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// just no-op. Actual operation will happen from the child process
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// via CompleteRedirectSetup call on the child channel.
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mConnectedParent = true;
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return NS_OK;
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}
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NS_IMETHODIMP nsExtProtocolChannel::SetClassifierMatchedInfo(
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const nsACString& aList, const nsACString& aProvider,
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const nsACString& aFullHash) {
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// nothing to do
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return NS_OK;
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}
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NS_IMETHODIMP nsExtProtocolChannel::SetClassifierMatchedTrackingInfo(
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const nsACString& aLists, const nsACString& aFullHashes) {
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// nothing to do
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return NS_OK;
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}
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NS_IMETHODIMP nsExtProtocolChannel::NotifyClassificationFlags(
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uint32_t aClassificationFlags, bool aIsThirdParty) {
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// nothing to do
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return NS_OK;
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}
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NS_IMETHODIMP nsExtProtocolChannel::Delete() {
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// nothing to do
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return NS_OK;
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}
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NS_IMETHODIMP nsExtProtocolChannel::GetRemoteType(nsACString& aRemoteType) {
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return NS_ERROR_NOT_IMPLEMENTED;
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}
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NS_IMETHODIMP nsExtProtocolChannel::OnStartRequest(nsIRequest* aRequest) {
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return NS_ERROR_UNEXPECTED;
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}
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NS_IMETHODIMP nsExtProtocolChannel::OnStopRequest(nsIRequest* aRequest,
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nsresult aStatusCode) {
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MOZ_ASSERT(NS_FAILED(aStatusCode));
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return NS_ERROR_UNEXPECTED;
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}
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NS_IMETHODIMP nsExtProtocolChannel::OnDataAvailable(
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nsIRequest* aRequest, nsIInputStream* aInputStream, uint64_t aOffset,
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uint32_t aCount) {
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// no data is expected
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MOZ_CRASH("No data expected from external protocol channel");
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return NS_ERROR_UNEXPECTED;
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}
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///////////////////////////////////////////////////////////////////////
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// the default protocol handler implementation
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//////////////////////////////////////////////////////////////////////
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nsExternalProtocolHandler::nsExternalProtocolHandler() {
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m_schemeName = "default";
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}
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nsExternalProtocolHandler::~nsExternalProtocolHandler() {}
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NS_IMPL_ADDREF(nsExternalProtocolHandler)
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NS_IMPL_RELEASE(nsExternalProtocolHandler)
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NS_INTERFACE_MAP_BEGIN(nsExternalProtocolHandler)
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NS_INTERFACE_MAP_ENTRY_AMBIGUOUS(nsISupports, nsIProtocolHandler)
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NS_INTERFACE_MAP_ENTRY(nsIProtocolHandler)
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NS_INTERFACE_MAP_ENTRY(nsIExternalProtocolHandler)
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NS_INTERFACE_MAP_ENTRY(nsISupportsWeakReference)
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NS_INTERFACE_MAP_END
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NS_IMETHODIMP nsExternalProtocolHandler::GetScheme(nsACString& aScheme) {
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aScheme = m_schemeName;
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return NS_OK;
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}
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NS_IMETHODIMP
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nsExternalProtocolHandler::AllowPort(int32_t port, const char* scheme,
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bool* _retval) {
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// don't override anything.
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*_retval = false;
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return NS_OK;
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}
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NS_IMETHODIMP
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nsExternalProtocolHandler::NewChannel(nsIURI* aURI, nsILoadInfo* aLoadInfo,
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nsIChannel** aRetval) {
|
|
NS_ENSURE_TRUE(aURI, NS_ERROR_UNKNOWN_PROTOCOL);
|
|
NS_ENSURE_TRUE(aRetval, NS_ERROR_UNKNOWN_PROTOCOL);
|
|
|
|
nsCOMPtr<nsIChannel> channel = new nsExtProtocolChannel(aURI, aLoadInfo);
|
|
channel.forget(aRetval);
|
|
return NS_OK;
|
|
}
|
|
|
|
///////////////////////////////////////////////////////////////////////
|
|
// External protocol handler interface implementation
|
|
//////////////////////////////////////////////////////////////////////
|
|
NS_IMETHODIMP nsExternalProtocolHandler::ExternalAppExistsForScheme(
|
|
const nsACString& aScheme, bool* _retval) {
|
|
nsCOMPtr<nsIExternalProtocolService> extProtSvc(
|
|
do_GetService(NS_EXTERNALPROTOCOLSERVICE_CONTRACTID));
|
|
if (extProtSvc)
|
|
return extProtSvc->ExternalProtocolHandlerExists(
|
|
PromiseFlatCString(aScheme).get(), _retval);
|
|
|
|
// In case we don't have external protocol service.
|
|
*_retval = false;
|
|
return NS_OK;
|
|
}
|