summaryrefslogtreecommitdiffstats
path: root/uriloader/exthandler/nsExternalProtocolHandler.cpp
diff options
context:
space:
mode:
Diffstat (limited to '')
-rw-r--r--uriloader/exthandler/nsExternalProtocolHandler.cpp550
1 files changed, 550 insertions, 0 deletions
diff --git a/uriloader/exthandler/nsExternalProtocolHandler.cpp b/uriloader/exthandler/nsExternalProtocolHandler.cpp
new file mode 100644
index 0000000000..4e93977b8f
--- /dev/null
+++ b/uriloader/exthandler/nsExternalProtocolHandler.cpp
@@ -0,0 +1,550 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
+ * vim:set ts=2 sts=2 sw=2 et cin:
+ *
+ * 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/ContentChild.h"
+#include "mozilla/BasePrincipal.h"
+#include "nsIURI.h"
+#include "nsExternalProtocolHandler.h"
+#include "nsString.h"
+#include "nsReadableUtils.h"
+#include "nsCOMPtr.h"
+#include "nsContentUtils.h"
+#include "nsServiceManagerUtils.h"
+#include "nsIInterfaceRequestor.h"
+#include "nsIInterfaceRequestorUtils.h"
+#include "nsIRedirectHistoryEntry.h"
+#include "nsNetUtil.h"
+#include "nsContentSecurityManager.h"
+#include "nsExternalHelperAppService.h"
+
+// used to dispatch urls to default protocol handlers
+#include "nsCExternalHandlerService.h"
+#include "nsIExternalProtocolService.h"
+#include "nsIChildChannel.h"
+#include "nsIParentChannel.h"
+
+class nsILoadInfo;
+
+////////////////////////////////////////////////////////////////////////
+// a stub channel implemenation which will map calls to AsyncRead and
+// OpenInputStream to calls in the OS for loading the url.
+////////////////////////////////////////////////////////////////////////
+
+class nsExtProtocolChannel : public nsIChannel,
+ public nsIChildChannel,
+ public nsIParentChannel {
+ public:
+ NS_DECL_THREADSAFE_ISUPPORTS
+ NS_DECL_NSICHANNEL
+ NS_DECL_NSIREQUESTOBSERVER
+ NS_DECL_NSISTREAMLISTENER
+ NS_DECL_NSIREQUEST
+ NS_DECL_NSICHILDCHANNEL
+ NS_DECL_NSIPARENTCHANNEL
+
+ nsExtProtocolChannel(nsIURI* aURI, nsILoadInfo* aLoadInfo);
+
+ private:
+ virtual ~nsExtProtocolChannel();
+
+ nsresult OpenURL();
+ void Finish(nsresult aResult);
+
+ nsCOMPtr<nsIURI> mUrl;
+ nsCOMPtr<nsIURI> mOriginalURI;
+ nsresult mStatus;
+ nsLoadFlags mLoadFlags;
+ bool mWasOpened;
+ bool mCanceled;
+ // Set true (as a result of ConnectParent invoked from child process)
+ // when this channel is on the parent process and is being used as
+ // a redirect target channel. It turns AsyncOpen into a no-op since
+ // we do it on the child.
+ bool mConnectedParent;
+
+ nsCOMPtr<nsIInterfaceRequestor> mCallbacks;
+ nsCOMPtr<nsILoadGroup> mLoadGroup;
+ nsCOMPtr<nsILoadInfo> mLoadInfo;
+ nsCOMPtr<nsIStreamListener> mListener;
+};
+
+NS_IMPL_ADDREF(nsExtProtocolChannel)
+NS_IMPL_RELEASE(nsExtProtocolChannel)
+
+NS_INTERFACE_MAP_BEGIN(nsExtProtocolChannel)
+ NS_INTERFACE_MAP_ENTRY_AMBIGUOUS(nsISupports, nsIChannel)
+ NS_INTERFACE_MAP_ENTRY(nsIChannel)
+ NS_INTERFACE_MAP_ENTRY(nsIRequest)
+ NS_INTERFACE_MAP_ENTRY(nsIChildChannel)
+ NS_INTERFACE_MAP_ENTRY(nsIParentChannel)
+ NS_INTERFACE_MAP_ENTRY(nsIStreamListener)
+ NS_INTERFACE_MAP_ENTRY(nsIRequestObserver)
+NS_INTERFACE_MAP_END
+
+nsExtProtocolChannel::nsExtProtocolChannel(nsIURI* aURI, nsILoadInfo* aLoadInfo)
+ : mUrl(aURI),
+ mOriginalURI(aURI),
+ mStatus(NS_OK),
+ mLoadFlags(nsIRequest::LOAD_NORMAL),
+ mWasOpened(false),
+ mCanceled(false),
+ mConnectedParent(false),
+ mLoadInfo(aLoadInfo) {}
+
+nsExtProtocolChannel::~nsExtProtocolChannel() {}
+
+NS_IMETHODIMP nsExtProtocolChannel::GetLoadGroup(nsILoadGroup** aLoadGroup) {
+ NS_IF_ADDREF(*aLoadGroup = mLoadGroup);
+ return NS_OK;
+}
+
+NS_IMETHODIMP nsExtProtocolChannel::SetLoadGroup(nsILoadGroup* aLoadGroup) {
+ mLoadGroup = aLoadGroup;
+ return NS_OK;
+}
+
+NS_IMETHODIMP nsExtProtocolChannel::GetNotificationCallbacks(
+ nsIInterfaceRequestor** aCallbacks) {
+ NS_IF_ADDREF(*aCallbacks = mCallbacks);
+ return NS_OK;
+}
+
+NS_IMETHODIMP nsExtProtocolChannel::SetNotificationCallbacks(
+ nsIInterfaceRequestor* aCallbacks) {
+ mCallbacks = aCallbacks;
+ return NS_OK;
+}
+
+NS_IMETHODIMP
+nsExtProtocolChannel::GetSecurityInfo(
+ nsITransportSecurityInfo** aSecurityInfo) {
+ *aSecurityInfo = nullptr;
+ return NS_OK;
+}
+
+NS_IMETHODIMP nsExtProtocolChannel::GetOriginalURI(nsIURI** aURI) {
+ NS_ADDREF(*aURI = mOriginalURI);
+ return NS_OK;
+}
+
+NS_IMETHODIMP nsExtProtocolChannel::SetOriginalURI(nsIURI* aURI) {
+ NS_ENSURE_ARG_POINTER(aURI);
+ mOriginalURI = aURI;
+ return NS_OK;
+}
+
+NS_IMETHODIMP nsExtProtocolChannel::GetURI(nsIURI** aURI) {
+ *aURI = mUrl;
+ NS_IF_ADDREF(*aURI);
+ return NS_OK;
+}
+
+nsresult nsExtProtocolChannel::OpenURL() {
+ nsresult rv = NS_ERROR_FAILURE;
+ nsCOMPtr<nsIExternalProtocolService> extProtService(
+ do_GetService(NS_EXTERNALPROTOCOLSERVICE_CONTRACTID));
+
+ if (extProtService) {
+#ifdef DEBUG
+ nsAutoCString urlScheme;
+ mUrl->GetScheme(urlScheme);
+ bool haveHandler = false;
+ extProtService->ExternalProtocolHandlerExists(urlScheme.get(),
+ &haveHandler);
+ NS_ASSERTION(haveHandler,
+ "Why do we have a channel for this url if we don't support "
+ "the protocol?");
+#endif
+
+ RefPtr<mozilla::dom::BrowsingContext> ctx;
+ rv = mLoadInfo->GetTargetBrowsingContext(getter_AddRefs(ctx));
+ if (NS_FAILED(rv)) {
+ goto finish;
+ }
+
+ RefPtr<nsIPrincipal> triggeringPrincipal = mLoadInfo->TriggeringPrincipal();
+ RefPtr<nsIPrincipal> redirectPrincipal;
+ if (!mLoadInfo->RedirectChain().IsEmpty()) {
+ mLoadInfo->RedirectChain().LastElement()->GetPrincipal(
+ getter_AddRefs(redirectPrincipal));
+ }
+ rv = extProtService->LoadURI(mUrl, triggeringPrincipal, redirectPrincipal,
+ ctx, mLoadInfo->GetLoadTriggeredFromExternal(),
+ mLoadInfo->GetHasValidUserGestureActivation());
+
+ if (NS_SUCCEEDED(rv) && mListener) {
+ mStatus = NS_ERROR_NO_CONTENT;
+
+ RefPtr<nsExtProtocolChannel> self = this;
+ nsCOMPtr<nsIStreamListener> listener = mListener;
+ MessageLoop::current()->PostTask(NS_NewRunnableFunction(
+ "nsExtProtocolChannel::OpenURL", [self, listener]() {
+ listener->OnStartRequest(self);
+ listener->OnStopRequest(self, self->mStatus);
+ }));
+ }
+ }
+
+finish:
+ mCallbacks = nullptr;
+ mListener = nullptr;
+ return rv;
+}
+
+NS_IMETHODIMP nsExtProtocolChannel::Open(nsIInputStream** aStream) {
+ nsCOMPtr<nsIStreamListener> listener;
+ nsresult rv =
+ nsContentSecurityManager::doContentSecurityCheck(this, listener);
+ NS_ENSURE_SUCCESS(rv, rv);
+
+ return OpenURL();
+}
+
+NS_IMETHODIMP nsExtProtocolChannel::AsyncOpen(nsIStreamListener* aListener) {
+ nsCOMPtr<nsIStreamListener> listener = aListener;
+ nsresult rv =
+ nsContentSecurityManager::doContentSecurityCheck(this, listener);
+ if (NS_FAILED(rv)) {
+ mCallbacks = nullptr;
+ return rv;
+ }
+
+ if (mConnectedParent) {
+ return NS_OK;
+ }
+
+ MOZ_ASSERT(
+ mLoadInfo->GetSecurityMode() == 0 ||
+ mLoadInfo->GetInitialSecurityCheckDone() ||
+ (mLoadInfo->GetSecurityMode() ==
+ nsILoadInfo::SEC_ALLOW_CROSS_ORIGIN_SEC_CONTEXT_IS_NULL &&
+ mLoadInfo->GetLoadingPrincipal() &&
+ mLoadInfo->GetLoadingPrincipal()->IsSystemPrincipal()),
+ "security flags in loadInfo but doContentSecurityCheck() not called");
+
+ NS_ENSURE_ARG_POINTER(listener);
+ NS_ENSURE_TRUE(!mWasOpened, NS_ERROR_ALREADY_OPENED);
+
+ mWasOpened = true;
+ mListener = listener;
+
+ return OpenURL();
+}
+
+NS_IMETHODIMP nsExtProtocolChannel::GetLoadFlags(nsLoadFlags* aLoadFlags) {
+ *aLoadFlags = mLoadFlags;
+ return NS_OK;
+}
+
+NS_IMETHODIMP nsExtProtocolChannel::SetLoadFlags(nsLoadFlags aLoadFlags) {
+ mLoadFlags = aLoadFlags;
+ return NS_OK;
+}
+
+NS_IMETHODIMP nsExtProtocolChannel::GetTRRMode(nsIRequest::TRRMode* aTRRMode) {
+ return GetTRRModeImpl(aTRRMode);
+}
+
+NS_IMETHODIMP nsExtProtocolChannel::SetTRRMode(nsIRequest::TRRMode aTRRMode) {
+ return SetTRRModeImpl(aTRRMode);
+}
+
+NS_IMETHODIMP nsExtProtocolChannel::GetIsDocument(bool* aIsDocument) {
+ return NS_GetIsDocumentChannel(this, aIsDocument);
+}
+
+NS_IMETHODIMP nsExtProtocolChannel::GetContentType(nsACString& aContentType) {
+ return NS_ERROR_NOT_IMPLEMENTED;
+}
+
+NS_IMETHODIMP nsExtProtocolChannel::SetContentType(
+ const nsACString& aContentType) {
+ return NS_ERROR_FAILURE;
+}
+
+NS_IMETHODIMP nsExtProtocolChannel::GetContentCharset(
+ nsACString& aContentCharset) {
+ return NS_ERROR_NOT_IMPLEMENTED;
+}
+
+NS_IMETHODIMP nsExtProtocolChannel::SetContentCharset(
+ const nsACString& aContentCharset) {
+ return NS_ERROR_NOT_IMPLEMENTED;
+}
+
+NS_IMETHODIMP nsExtProtocolChannel::GetContentDisposition(
+ uint32_t* aContentDisposition) {
+ return NS_ERROR_NOT_AVAILABLE;
+}
+
+NS_IMETHODIMP nsExtProtocolChannel::SetContentDisposition(
+ uint32_t aContentDisposition) {
+ return NS_ERROR_NOT_AVAILABLE;
+}
+
+NS_IMETHODIMP nsExtProtocolChannel::GetContentDispositionFilename(
+ nsAString& aContentDispositionFilename) {
+ return NS_ERROR_NOT_AVAILABLE;
+}
+
+NS_IMETHODIMP nsExtProtocolChannel::SetContentDispositionFilename(
+ const nsAString& aContentDispositionFilename) {
+ return NS_ERROR_NOT_AVAILABLE;
+}
+
+NS_IMETHODIMP nsExtProtocolChannel::GetContentDispositionHeader(
+ nsACString& aContentDispositionHeader) {
+ return NS_ERROR_NOT_AVAILABLE;
+}
+
+NS_IMETHODIMP nsExtProtocolChannel::GetContentLength(int64_t* aContentLength) {
+ *aContentLength = -1;
+ return NS_OK;
+}
+
+NS_IMETHODIMP
+nsExtProtocolChannel::SetContentLength(int64_t aContentLength) {
+ MOZ_ASSERT_UNREACHABLE("SetContentLength");
+ return NS_ERROR_NOT_IMPLEMENTED;
+}
+
+NS_IMETHODIMP nsExtProtocolChannel::GetOwner(nsISupports** aPrincipal) {
+ return NS_ERROR_NOT_IMPLEMENTED;
+}
+
+NS_IMETHODIMP nsExtProtocolChannel::SetOwner(nsISupports* aPrincipal) {
+ return NS_ERROR_NOT_IMPLEMENTED;
+}
+
+NS_IMETHODIMP nsExtProtocolChannel::GetLoadInfo(nsILoadInfo** aLoadInfo) {
+ NS_IF_ADDREF(*aLoadInfo = mLoadInfo);
+ return NS_OK;
+}
+
+NS_IMETHODIMP nsExtProtocolChannel::SetLoadInfo(nsILoadInfo* aLoadInfo) {
+ MOZ_RELEASE_ASSERT(aLoadInfo, "loadinfo can't be null");
+ mLoadInfo = aLoadInfo;
+ return NS_OK;
+}
+
+////////////////////////////////////////////////////////////////////////////////
+// From nsIRequest
+////////////////////////////////////////////////////////////////////////////////
+
+NS_IMETHODIMP nsExtProtocolChannel::GetName(nsACString& result) {
+ return mUrl->GetSpec(result);
+}
+
+NS_IMETHODIMP nsExtProtocolChannel::IsPending(bool* result) {
+ *result = false;
+ return NS_OK;
+}
+
+NS_IMETHODIMP nsExtProtocolChannel::GetStatus(nsresult* status) {
+ *status = mStatus;
+ return NS_OK;
+}
+
+NS_IMETHODIMP nsExtProtocolChannel::SetCanceledReason(
+ const nsACString& aReason) {
+ return SetCanceledReasonImpl(aReason);
+}
+
+NS_IMETHODIMP nsExtProtocolChannel::GetCanceledReason(nsACString& aReason) {
+ return GetCanceledReasonImpl(aReason);
+}
+
+NS_IMETHODIMP nsExtProtocolChannel::CancelWithReason(
+ nsresult aStatus, const nsACString& aReason) {
+ return CancelWithReasonImpl(aStatus, aReason);
+}
+
+NS_IMETHODIMP nsExtProtocolChannel::Cancel(nsresult status) {
+ if (NS_SUCCEEDED(mStatus)) {
+ mStatus = status;
+ }
+ mCanceled = true;
+ return NS_OK;
+}
+
+NS_IMETHODIMP nsExtProtocolChannel::GetCanceled(bool* aCanceled) {
+ *aCanceled = mCanceled;
+ return NS_OK;
+}
+
+NS_IMETHODIMP nsExtProtocolChannel::Suspend() {
+ MOZ_ASSERT_UNREACHABLE("Suspend");
+ return NS_ERROR_NOT_IMPLEMENTED;
+}
+
+NS_IMETHODIMP nsExtProtocolChannel::Resume() {
+ MOZ_ASSERT_UNREACHABLE("Resume");
+ return NS_ERROR_NOT_IMPLEMENTED;
+}
+
+///////////////////////////////////////////////////////////////////////
+// From nsIChildChannel
+//////////////////////////////////////////////////////////////////////
+
+NS_IMETHODIMP nsExtProtocolChannel::ConnectParent(uint32_t registrarId) {
+ mozilla::dom::ContentChild::GetSingleton()
+ ->SendExtProtocolChannelConnectParent(registrarId);
+ return NS_OK;
+}
+
+NS_IMETHODIMP nsExtProtocolChannel::CompleteRedirectSetup(
+ nsIStreamListener* listener) {
+ // For redirects to external protocols we AsyncOpen on the child
+ // (not the parent) because child channel has the right docshell
+ // (which is needed for the select dialog).
+ return AsyncOpen(listener);
+}
+
+///////////////////////////////////////////////////////////////////////
+// From nsIParentChannel (derives from nsIStreamListener)
+//////////////////////////////////////////////////////////////////////
+
+NS_IMETHODIMP nsExtProtocolChannel::SetParentListener(
+ mozilla::net::ParentChannelListener* aListener) {
+ // This is called as part of the connect parent operation from
+ // ContentParent::RecvExtProtocolChannelConnectParent. Setting
+ // this flag tells this channel to not proceed and makes AsyncOpen
+ // just no-op. Actual operation will happen from the child process
+ // via CompleteRedirectSetup call on the child channel.
+ mConnectedParent = true;
+ return NS_OK;
+}
+
+NS_IMETHODIMP nsExtProtocolChannel::SetClassifierMatchedInfo(
+ const nsACString& aList, const nsACString& aProvider,
+ const nsACString& aFullHash) {
+ // nothing to do
+ return NS_OK;
+}
+
+NS_IMETHODIMP nsExtProtocolChannel::SetClassifierMatchedTrackingInfo(
+ const nsACString& aLists, const nsACString& aFullHashes) {
+ // nothing to do
+ return NS_OK;
+}
+
+NS_IMETHODIMP nsExtProtocolChannel::NotifyClassificationFlags(
+ uint32_t aClassificationFlags, bool aIsThirdParty) {
+ // nothing to do
+ return NS_OK;
+}
+
+NS_IMETHODIMP nsExtProtocolChannel::Delete() {
+ // nothing to do
+ return NS_OK;
+}
+
+NS_IMETHODIMP nsExtProtocolChannel::GetRemoteType(nsACString& aRemoteType) {
+ return NS_ERROR_NOT_IMPLEMENTED;
+}
+
+NS_IMETHODIMP nsExtProtocolChannel::OnStartRequest(nsIRequest* aRequest) {
+ return NS_ERROR_UNEXPECTED;
+}
+
+NS_IMETHODIMP nsExtProtocolChannel::OnStopRequest(nsIRequest* aRequest,
+ nsresult aStatusCode) {
+ MOZ_ASSERT(NS_FAILED(aStatusCode));
+ return NS_ERROR_UNEXPECTED;
+}
+
+NS_IMETHODIMP nsExtProtocolChannel::OnDataAvailable(
+ nsIRequest* aRequest, nsIInputStream* aInputStream, uint64_t aOffset,
+ uint32_t aCount) {
+ // no data is expected
+ MOZ_CRASH("No data expected from external protocol channel");
+ return NS_ERROR_UNEXPECTED;
+}
+
+///////////////////////////////////////////////////////////////////////
+// the default protocol handler implementation
+//////////////////////////////////////////////////////////////////////
+
+nsExternalProtocolHandler::nsExternalProtocolHandler() {
+ m_schemeName = "default";
+}
+
+nsExternalProtocolHandler::~nsExternalProtocolHandler() {}
+
+NS_IMPL_ADDREF(nsExternalProtocolHandler)
+NS_IMPL_RELEASE(nsExternalProtocolHandler)
+
+NS_INTERFACE_MAP_BEGIN(nsExternalProtocolHandler)
+ NS_INTERFACE_MAP_ENTRY_AMBIGUOUS(nsISupports, nsIProtocolHandler)
+ NS_INTERFACE_MAP_ENTRY(nsIProtocolHandler)
+ NS_INTERFACE_MAP_ENTRY(nsIExternalProtocolHandler)
+ NS_INTERFACE_MAP_ENTRY(nsISupportsWeakReference)
+NS_INTERFACE_MAP_END
+
+NS_IMETHODIMP nsExternalProtocolHandler::GetScheme(nsACString& aScheme) {
+ aScheme = m_schemeName;
+ return NS_OK;
+}
+
+NS_IMETHODIMP
+nsExternalProtocolHandler::AllowPort(int32_t port, const char* scheme,
+ bool* _retval) {
+ // don't override anything.
+ *_retval = false;
+ return NS_OK;
+}
+// returns TRUE if the OS can handle this protocol scheme and false otherwise.
+bool nsExternalProtocolHandler::HaveExternalProtocolHandler(nsIURI* aURI) {
+ MOZ_ASSERT(aURI);
+ nsAutoCString scheme;
+ aURI->GetScheme(scheme);
+
+ nsCOMPtr<nsIExternalProtocolService> extProtSvc(
+ do_GetService(NS_EXTERNALPROTOCOLSERVICE_CONTRACTID));
+ if (!extProtSvc) {
+ return false;
+ }
+
+ bool haveHandler = false;
+ extProtSvc->ExternalProtocolHandlerExists(scheme.get(), &haveHandler);
+ return haveHandler;
+}
+
+NS_IMETHODIMP
+nsExternalProtocolHandler::NewChannel(nsIURI* aURI, nsILoadInfo* aLoadInfo,
+ nsIChannel** aRetval) {
+ NS_ENSURE_TRUE(aURI, NS_ERROR_UNKNOWN_PROTOCOL);
+ NS_ENSURE_TRUE(aRetval, NS_ERROR_UNKNOWN_PROTOCOL);
+
+ // Only try to return a channel if we have a protocol handler for the url.
+ // nsOSHelperAppService::LoadUriInternal relies on this to check trustedness
+ // for some platforms at least. (win uses ::ShellExecute and unix uses
+ // gnome_url_show.)
+ if (!HaveExternalProtocolHandler(aURI)) {
+ return 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;
+}