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/* -*- 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 "ExternalHelperAppChild.h"
#include "mozilla/net/ChannelDiverterChild.h"
#include "mozilla/dom/BrowserChild.h"
#include "nsIDivertableChannel.h"
#include "nsIInputStream.h"
#include "nsIRequest.h"
#include "nsIResumableChannel.h"
#include "nsIPropertyBag2.h"
#include "nsNetUtil.h"
namespace mozilla {
namespace dom {
NS_IMPL_ISUPPORTS(ExternalHelperAppChild, nsIStreamListener, nsIRequestObserver)
ExternalHelperAppChild::ExternalHelperAppChild() : mStatus(NS_OK) {}
ExternalHelperAppChild::~ExternalHelperAppChild() {}
//-----------------------------------------------------------------------------
// nsIStreamListener
//-----------------------------------------------------------------------------
NS_IMETHODIMP
ExternalHelperAppChild::OnDataAvailable(nsIRequest* request,
nsIInputStream* input, uint64_t offset,
uint32_t count) {
if (NS_FAILED(mStatus)) return mStatus;
static uint32_t const kCopyChunkSize = 128 * 1024;
uint32_t toRead = std::min<uint32_t>(count, kCopyChunkSize);
nsCString data;
while (count) {
nsresult rv = NS_ReadInputStreamToString(input, data, toRead);
if (NS_WARN_IF(NS_FAILED(rv))) {
return rv;
}
if (NS_WARN_IF(!SendOnDataAvailable(data, offset, toRead))) {
return NS_ERROR_UNEXPECTED;
}
count -= toRead;
offset += toRead;
toRead = std::min<uint32_t>(count, kCopyChunkSize);
}
return NS_OK;
}
//////////////////////////////////////////////////////////////////////////////
// nsIRequestObserver
//////////////////////////////////////////////////////////////////////////////
NS_IMETHODIMP
ExternalHelperAppChild::OnStartRequest(nsIRequest* request) {
nsresult rv = mHandler->OnStartRequest(request);
NS_ENSURE_SUCCESS(rv, NS_ERROR_UNEXPECTED);
nsCOMPtr<nsIDivertableChannel> divertable = do_QueryInterface(request);
if (divertable) {
return DivertToParent(divertable, request);
}
nsCString entityID;
nsCOMPtr<nsIResumableChannel> resumable(do_QueryInterface(request));
if (resumable) {
resumable->GetEntityID(entityID);
}
SendOnStartRequest(entityID);
return NS_OK;
}
NS_IMETHODIMP
ExternalHelperAppChild::OnStopRequest(nsIRequest* request, nsresult status) {
// mHandler can be null if we diverted the request to the parent
if (mHandler) {
nsresult rv = mHandler->OnStopRequest(request, status);
SendOnStopRequest(status);
NS_ENSURE_SUCCESS(rv, NS_ERROR_UNEXPECTED);
}
return NS_OK;
}
nsresult ExternalHelperAppChild::DivertToParent(
nsIDivertableChannel* divertable, nsIRequest* request) {
// nsIDivertable must know about content conversions before being diverted.
MOZ_ASSERT(mHandler);
mHandler->MaybeApplyDecodingForExtension(request);
mozilla::net::ChannelDiverterChild* diverter = nullptr;
nsresult rv = divertable->DivertToParent(&diverter);
if (NS_WARN_IF(NS_FAILED(rv))) {
return rv;
}
MOZ_ASSERT(diverter);
if (SendDivertToParentUsing(diverter)) {
mHandler->DidDivertRequest(request);
mHandler = nullptr;
return NS_OK;
}
return NS_ERROR_FAILURE;
}
mozilla::ipc::IPCResult ExternalHelperAppChild::RecvCancel(
const nsresult& aStatus) {
mStatus = aStatus;
return IPC_OK();
}
} // namespace dom
} // namespace mozilla