diff -r 000000000000 -r 6474c204b198 uriloader/exthandler/ExternalHelperAppParent.cpp
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/uriloader/exthandler/ExternalHelperAppParent.cpp	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,471 @@
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=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/DebugOnly.h"
+
+#include "ExternalHelperAppParent.h"
+#include "nsIContent.h"
+#include "nsCExternalHandlerService.h"
+#include "nsIExternalHelperAppService.h"
+#include "mozilla/dom/ContentParent.h"
+#include "mozilla/dom/Element.h"
+#include "mozilla/dom/TabParent.h"
+#include "nsIBrowserDOMWindow.h"
+#include "nsStringStream.h"
+#include "mozilla/ipc/URIUtils.h"
+#include "nsNetUtil.h"
+#include "nsIDocument.h"
+#include "mozilla/net/ChannelDiverterParent.h"
+
+#include "mozilla/unused.h"
+
+using namespace mozilla::ipc;
+
+namespace mozilla {
+namespace dom {
+
+NS_IMPL_ISUPPORTS_INHERITED(ExternalHelperAppParent,
+                            nsHashPropertyBag,
+                            nsIRequest,
+                            nsIChannel,
+                            nsIMultiPartChannel,
+                            nsIResumableChannel,
+                            nsIStreamListener)
+
+ExternalHelperAppParent::ExternalHelperAppParent(
+    const OptionalURIParams& uri,
+    const int64_t& aContentLength)
+  : mURI(DeserializeURI(uri))
+  , mPending(false)
+  , mDiverted(false)
+  , mIPCClosed(false)
+  , mLoadFlags(0)
+  , mStatus(NS_OK)
+  , mContentLength(aContentLength)
+{
+}
+
+void
+ExternalHelperAppParent::Init(ContentParent *parent,
+                              const nsCString& aMimeContentType,
+                              const nsCString& aContentDispositionHeader,
+                              const uint32_t& aContentDispositionHint,
+                              const nsString& aContentDispositionFilename,
+                              const bool& aForceSave,
+                              const OptionalURIParams& aReferrer,
+                              PBrowserParent* aBrowser)
+{
+  nsCOMPtr<nsIExternalHelperAppService> helperAppService =
+    do_GetService(NS_EXTERNALHELPERAPPSERVICE_CONTRACTID);
+  NS_ASSERTION(helperAppService, "No Helper App Service!");
+
+  nsCOMPtr<nsIURI> referrer = DeserializeURI(aReferrer);
+  if (referrer)
+    SetPropertyAsInterface(NS_LITERAL_STRING("docshell.internalReferrer"), referrer);
+
+  mContentDispositionHeader = aContentDispositionHeader;
+  if (!mContentDispositionHeader.IsEmpty()) {  
+    NS_GetFilenameFromDisposition(mContentDispositionFilename, 
+                                  mContentDispositionHeader, 
+                                  mURI);
+    mContentDisposition = 
+      NS_GetContentDispositionFromHeader(mContentDispositionHeader, this);
+  }
+  else {
+    mContentDisposition = aContentDispositionHint;
+    mContentDispositionFilename = aContentDispositionFilename;
+  }
+
+  nsCOMPtr<nsIInterfaceRequestor> window;
+  if (aBrowser) {
+    TabParent* tabParent = static_cast<TabParent*>(aBrowser);
+    if (tabParent->GetOwnerElement())
+      window = do_QueryInterface(tabParent->GetOwnerElement()->OwnerDoc()->GetWindow());
+  }
+
+  helperAppService->DoContent(aMimeContentType, this, window,
+                              aForceSave, getter_AddRefs(mListener));
+}
+
+void
+ExternalHelperAppParent::ActorDestroy(ActorDestroyReason why)
+{
+  mIPCClosed = true;
+}
+
+void
+ExternalHelperAppParent::Delete()
+{
+  if (!mIPCClosed) {
+    unused << Send__delete__(this);
+  }
+}
+
+bool
+ExternalHelperAppParent::RecvOnStartRequest(const nsCString& entityID)
+{
+  MOZ_ASSERT(!mDiverted, "child forwarding callbacks after request was diverted");
+
+  mEntityID = entityID;
+  mPending = true;
+  mStatus = mListener->OnStartRequest(this, nullptr);
+  return true;
+}
+
+bool
+ExternalHelperAppParent::RecvOnDataAvailable(const nsCString& data,
+                                             const uint64_t& offset,
+                                             const uint32_t& count)
+{
+  if (NS_FAILED(mStatus))
+    return true;
+
+  MOZ_ASSERT(!mDiverted, "child forwarding callbacks after request was diverted");
+  MOZ_ASSERT(mPending, "must be pending!");
+
+  nsCOMPtr<nsIInputStream> stringStream;
+  DebugOnly<nsresult> rv = NS_NewByteInputStream(getter_AddRefs(stringStream), data.get(), count, NS_ASSIGNMENT_DEPEND);
+  NS_ASSERTION(NS_SUCCEEDED(rv), "failed to create dependent string!");
+  mStatus = mListener->OnDataAvailable(this, nullptr, stringStream, offset, count);
+
+  return true;
+}
+
+bool
+ExternalHelperAppParent::RecvOnStopRequest(const nsresult& code)
+{
+  MOZ_ASSERT(!mDiverted, "child forwarding callbacks after request was diverted");
+
+  mPending = false;
+  mListener->OnStopRequest(this, nullptr,
+                           (NS_SUCCEEDED(code) && NS_FAILED(mStatus)) ? mStatus : code);
+  Delete();
+  return true;
+}
+
+bool
+ExternalHelperAppParent::RecvDivertToParentUsing(PChannelDiverterParent* diverter)
+{
+  MOZ_ASSERT(diverter);
+  auto p = static_cast<mozilla::net::ChannelDiverterParent*>(diverter);
+  p->DivertTo(this);
+  mDiverted = true;
+  unused << p->Send__delete__(p);
+  return true;
+}
+
+//
+// nsIStreamListener
+//
+
+NS_IMETHODIMP
+ExternalHelperAppParent::OnDataAvailable(nsIRequest *request,
+                                         nsISupports *ctx,
+                                         nsIInputStream *input,
+                                         uint64_t offset,
+                                         uint32_t count)
+{
+  MOZ_ASSERT(mDiverted);
+  return mListener->OnDataAvailable(request, ctx, input, offset, count);
+}
+
+NS_IMETHODIMP
+ExternalHelperAppParent::OnStartRequest(nsIRequest *request, nsISupports *ctx)
+{
+  MOZ_ASSERT(mDiverted);
+  return mListener->OnStartRequest(request, ctx);
+}
+
+NS_IMETHODIMP
+ExternalHelperAppParent::OnStopRequest(nsIRequest *request,
+                                       nsISupports *ctx,
+                                       nsresult status)
+{
+  MOZ_ASSERT(mDiverted);
+  nsresult rv = mListener->OnStopRequest(request, ctx, status);
+  Delete();
+  return rv;
+}
+
+ExternalHelperAppParent::~ExternalHelperAppParent()
+{
+}
+
+//
+// nsIRequest implementation...
+//
+
+NS_IMETHODIMP
+ExternalHelperAppParent::GetName(nsACString& aResult)
+{
+  if (!mURI) {
+    aResult.Truncate();
+    return NS_ERROR_NOT_AVAILABLE;
+  }
+  mURI->GetAsciiSpec(aResult);
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+ExternalHelperAppParent::IsPending(bool *aResult)
+{
+  *aResult = mPending;
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+ExternalHelperAppParent::GetStatus(nsresult *aResult)
+{
+  *aResult = mStatus;
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+ExternalHelperAppParent::Cancel(nsresult aStatus)
+{
+  mStatus = aStatus;
+  unused << SendCancel(aStatus);
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+ExternalHelperAppParent::Suspend()
+{
+  return NS_ERROR_NOT_IMPLEMENTED;
+}
+
+NS_IMETHODIMP
+ExternalHelperAppParent::Resume()
+{
+  return NS_ERROR_NOT_IMPLEMENTED;
+}
+
+//
+// nsIChannel implementation
+//
+
+NS_IMETHODIMP
+ExternalHelperAppParent::GetOriginalURI(nsIURI * *aURI)
+{
+  NS_IF_ADDREF(*aURI = mURI);
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+ExternalHelperAppParent::SetOriginalURI(nsIURI *aURI)
+{
+  return NS_ERROR_NOT_IMPLEMENTED;
+}
+
+NS_IMETHODIMP
+ExternalHelperAppParent::GetURI(nsIURI **aURI)
+{
+  NS_IF_ADDREF(*aURI = mURI);
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+ExternalHelperAppParent::Open(nsIInputStream **aResult)
+{
+  return NS_ERROR_NOT_IMPLEMENTED;
+}
+
+NS_IMETHODIMP
+ExternalHelperAppParent::AsyncOpen(nsIStreamListener *aListener,
+                                   nsISupports *aContext)
+{
+  return NS_ERROR_NOT_IMPLEMENTED;
+}
+
+
+NS_IMETHODIMP
+ExternalHelperAppParent::GetLoadFlags(nsLoadFlags *aLoadFlags)
+{
+  *aLoadFlags = mLoadFlags;
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+ExternalHelperAppParent::SetLoadFlags(nsLoadFlags aLoadFlags)
+{
+  mLoadFlags = aLoadFlags;
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+ExternalHelperAppParent::GetLoadGroup(nsILoadGroup* *aLoadGroup)
+{
+  *aLoadGroup = nullptr;
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+ExternalHelperAppParent::SetLoadGroup(nsILoadGroup* aLoadGroup)
+{
+  return NS_ERROR_NOT_IMPLEMENTED;
+}
+
+NS_IMETHODIMP
+ExternalHelperAppParent::GetOwner(nsISupports* *aOwner)
+{
+  *aOwner = nullptr;
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+ExternalHelperAppParent::SetOwner(nsISupports* aOwner)
+{
+  return NS_ERROR_NOT_IMPLEMENTED;
+}
+
+NS_IMETHODIMP
+ExternalHelperAppParent::GetNotificationCallbacks(nsIInterfaceRequestor* *aCallbacks)
+{
+  *aCallbacks = nullptr;
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+ExternalHelperAppParent::SetNotificationCallbacks(nsIInterfaceRequestor* aCallbacks)
+{
+  return NS_ERROR_NOT_IMPLEMENTED;
+}
+
+NS_IMETHODIMP
+ExternalHelperAppParent::GetSecurityInfo(nsISupports * *aSecurityInfo)
+{
+  *aSecurityInfo = nullptr;
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+ExternalHelperAppParent::GetContentType(nsACString& aContentType)
+{
+  aContentType.Truncate();
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+ExternalHelperAppParent::SetContentType(const nsACString& aContentType)
+{
+  return NS_ERROR_NOT_IMPLEMENTED;
+}
+
+NS_IMETHODIMP
+ExternalHelperAppParent::GetContentCharset(nsACString& aContentCharset)
+{
+  aContentCharset.Truncate();
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+ExternalHelperAppParent::SetContentCharset(const nsACString& aContentCharset)
+{
+  return NS_ERROR_NOT_IMPLEMENTED;
+}
+
+NS_IMETHODIMP
+ExternalHelperAppParent::GetContentDisposition(uint32_t *aContentDisposition)
+{
+  if (mContentDispositionHeader.IsEmpty())
+    return NS_ERROR_NOT_AVAILABLE;
+
+  *aContentDisposition = mContentDisposition;
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+ExternalHelperAppParent::SetContentDisposition(uint32_t aContentDisposition)
+{
+  mContentDisposition = aContentDisposition;
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+ExternalHelperAppParent::GetContentDispositionFilename(nsAString& aContentDispositionFilename)
+{
+  if (mContentDispositionFilename.IsEmpty())
+    return NS_ERROR_NOT_AVAILABLE;
+
+  aContentDispositionFilename = mContentDispositionFilename;
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+ExternalHelperAppParent::SetContentDispositionFilename(const nsAString& aContentDispositionFilename)
+{
+  mContentDispositionFilename = aContentDispositionFilename;
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+ExternalHelperAppParent::GetContentDispositionHeader(nsACString& aContentDispositionHeader)
+{
+  if (mContentDispositionHeader.IsEmpty())
+    return NS_ERROR_NOT_AVAILABLE;
+
+  aContentDispositionHeader = mContentDispositionHeader;
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+ExternalHelperAppParent::GetContentLength(int64_t *aContentLength)
+{
+  if (mContentLength < 0)
+    *aContentLength = -1;
+  else
+    *aContentLength = mContentLength;
+  return NS_OK;
+}
+
+NS_IMETHODIMP
+ExternalHelperAppParent::SetContentLength(int64_t aContentLength)
+{
+  mContentLength = aContentLength;
+  return NS_OK;
+}
+
+//
+// nsIResumableChannel implementation
+//
+
+NS_IMETHODIMP
+ExternalHelperAppParent::ResumeAt(uint64_t startPos, const nsACString& entityID)
+{
+  return NS_ERROR_NOT_IMPLEMENTED;
+}
+
+NS_IMETHODIMP
+ExternalHelperAppParent::GetEntityID(nsACString& aEntityID)
+{
+  aEntityID = mEntityID;
+  return NS_OK;
+}
+
+//
+// nsIMultiPartChannel implementation
+//
+
+NS_IMETHODIMP
+ExternalHelperAppParent::GetBaseChannel(nsIChannel* *aChannel)
+{
+  return NS_ERROR_NOT_IMPLEMENTED;
+}
+
+NS_IMETHODIMP
+ExternalHelperAppParent::GetPartID(uint32_t* aPartID)
+{
+  return NS_ERROR_NOT_IMPLEMENTED;
+}
+
+NS_IMETHODIMP
+ExternalHelperAppParent::GetIsLastPart(bool* aIsLastPart)
+{
+  return NS_ERROR_NOT_IMPLEMENTED;
+}
+
+} // namespace dom
+} // namespace mozilla