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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=4 sw=2 sts=2 et 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/net/NeckoChild.h"
#include "GIOChannelChild.h"
#include "nsGIOProtocolHandler.h"
#include "mozilla/dom/ContentChild.h"
#include "mozilla/dom/BrowserChild.h"
#include "nsContentUtils.h"
#include "nsIBrowserChild.h"
#include "nsStringStream.h"
#include "nsNetUtil.h"
#include "base/compiler_specific.h"
#include "mozilla/ipc/IPCStreamUtils.h"
#include "mozilla/ipc/URIUtils.h"
#include "SerializedLoadContext.h"
#include "mozilla/ipc/BackgroundUtils.h"
#include "nsIURIMutator.h"
#include "nsContentSecurityManager.h"
#include "SerializedLoadContext.h"
#include "mozilla/Logging.h"
using mozilla::dom::ContentChild;
namespace mozilla {
#undef LOG
#define LOG(args) MOZ_LOG(gGIOLog, mozilla::LogLevel::Debug, args)
namespace net {
GIOChannelChild::GIOChannelChild(nsIURI* aUri)
: mEventQ(new ChannelEventQueue(static_cast<nsIChildChannel*>(this))) {
SetURI(aUri);
// We could support thread retargeting, but as long as we're being driven by
// IPDL on the main thread it doesn't buy us anything.
DisallowThreadRetargeting();
}
void GIOChannelChild::AddIPDLReference() {
MOZ_ASSERT(!mIPCOpen, "Attempt to retain more than one IPDL reference");
mIPCOpen = true;
AddRef();
}
void GIOChannelChild::ReleaseIPDLReference() {
MOZ_ASSERT(mIPCOpen, "Attempt to release nonexistent IPDL reference");
mIPCOpen = false;
Release();
}
//-----------------------------------------------------------------------------
// GIOChannelChild::nsISupports
//-----------------------------------------------------------------------------
NS_IMPL_ISUPPORTS_INHERITED(GIOChannelChild, nsBaseChannel, nsIChildChannel)
//-----------------------------------------------------------------------------
NS_IMETHODIMP
GIOChannelChild::AsyncOpen(nsIStreamListener* aListener) {
nsCOMPtr<nsIStreamListener> listener = aListener;
nsresult rv =
nsContentSecurityManager::doContentSecurityCheck(this, listener);
NS_ENSURE_SUCCESS(rv, rv);
LOG(("GIOChannelChild::AsyncOpen [this=%p]\n", this));
NS_ENSURE_TRUE((gNeckoChild), NS_ERROR_FAILURE);
NS_ENSURE_TRUE(
!static_cast<ContentChild*>(gNeckoChild->Manager())->IsShuttingDown(),
NS_ERROR_FAILURE);
NS_ENSURE_ARG_POINTER(listener);
NS_ENSURE_TRUE(!mIsPending, NS_ERROR_IN_PROGRESS);
NS_ENSURE_TRUE(!mWasOpened, NS_ERROR_ALREADY_OPENED);
// Port checked in parent, but duplicate here so we can return with error
// immediately, as we've done since before e10s.
rv = NS_CheckPortSafety(nsBaseChannel::URI()); // Need to disambiguate,
// because in the child ipdl,
// a typedef URI is defined...
if (NS_FAILED(rv)) {
return rv;
}
mozilla::dom::BrowserChild* browserChild = nullptr;
nsCOMPtr<nsIBrowserChild> iBrowserChild;
NS_QueryNotificationCallbacks(mCallbacks, mLoadGroup,
NS_GET_IID(nsIBrowserChild),
getter_AddRefs(iBrowserChild));
GetCallback(iBrowserChild);
if (iBrowserChild) {
browserChild =
static_cast<mozilla::dom::BrowserChild*>(iBrowserChild.get());
}
mListener = listener;
// add ourselves to the load group.
if (mLoadGroup) {
mLoadGroup->AddRequest(this, nullptr);
}
mozilla::ipc::AutoIPCStream autoStream;
autoStream.Serialize(mUploadStream,
static_cast<ContentChild*>(gNeckoChild->Manager()));
uint32_t loadFlags = 0;
GetLoadFlags(&loadFlags);
GIOChannelOpenArgs openArgs;
SerializeURI(nsBaseChannel::URI(), openArgs.uri());
openArgs.startPos() = mStartPos;
openArgs.entityID() = mEntityID;
openArgs.uploadStream() = autoStream.TakeOptionalValue();
openArgs.loadFlags() = loadFlags;
nsCOMPtr<nsILoadInfo> loadInfo = LoadInfo();
rv = mozilla::ipc::LoadInfoToLoadInfoArgs(loadInfo, &openArgs.loadInfo());
NS_ENSURE_SUCCESS(rv, rv);
// This must happen before the constructor message is sent.
SetupNeckoTarget();
gNeckoChild->SendPGIOChannelConstructor(
this, browserChild, IPC::SerializedLoadContext(this), openArgs);
// The socket transport layer in the chrome process now has a logical ref to
// us until OnStopRequest is called.
AddIPDLReference();
mIsPending = true;
mWasOpened = true;
return rv;
}
NS_IMETHODIMP
GIOChannelChild::IsPending(bool* aResult) {
*aResult = mIsPending;
return NS_OK;
}
nsresult GIOChannelChild::OpenContentStream(bool aAsync,
nsIInputStream** aStream,
nsIChannel** aChannel) {
MOZ_CRASH("GIOChannel*Child* should never have OpenContentStream called!");
return NS_OK;
}
mozilla::ipc::IPCResult GIOChannelChild::RecvOnStartRequest(
const nsresult& aChannelStatus, const int64_t& aContentLength,
const nsCString& aContentType, const nsCString& aEntityID,
const URIParams& aURI) {
LOG(("GIOChannelChild::RecvOnStartRequest [this=%p]\n", this));
mEventQ->RunOrEnqueue(new NeckoTargetChannelFunctionEvent(
this, [self = UnsafePtr<GIOChannelChild>(this), aChannelStatus,
aContentLength, aContentType, aEntityID, aURI]() {
self->DoOnStartRequest(aChannelStatus, aContentLength, aContentType,
aEntityID, aURI);
}));
return IPC_OK();
}
void GIOChannelChild::DoOnStartRequest(const nsresult& aChannelStatus,
const int64_t& aContentLength,
const nsCString& aContentType,
const nsCString& aEntityID,
const URIParams& aURI) {
LOG(("GIOChannelChild::DoOnStartRequest [this=%p]\n", this));
if (!mCanceled && NS_SUCCEEDED(mStatus)) {
mStatus = aChannelStatus;
}
mContentLength = aContentLength;
SetContentType(aContentType);
mEntityID = aEntityID;
nsCString spec;
nsCOMPtr<nsIURI> uri = DeserializeURI(aURI);
nsresult rv = uri->GetSpec(spec);
if (NS_SUCCEEDED(rv)) {
// Changes nsBaseChannel::URI()
rv = NS_MutateURI(mURI).SetSpec(spec).Finalize(mURI);
}
if (NS_FAILED(rv)) {
Cancel(rv);
}
AutoEventEnqueuer ensureSerialDispatch(mEventQ);
rv = mListener->OnStartRequest(this);
if (NS_FAILED(rv)) {
Cancel(rv);
}
}
mozilla::ipc::IPCResult GIOChannelChild::RecvOnDataAvailable(
const nsresult& aChannelStatus, const nsCString& aData,
const uint64_t& aOffset, const uint32_t& aCount) {
LOG(("GIOChannelChild::RecvOnDataAvailable [this=%p]\n", this));
mEventQ->RunOrEnqueue(new NeckoTargetChannelFunctionEvent(
this, [self = UnsafePtr<GIOChannelChild>(this), aChannelStatus, aData,
aOffset, aCount]() {
self->DoOnDataAvailable(aChannelStatus, aData, aOffset, aCount);
}));
return IPC_OK();
}
void GIOChannelChild::DoOnDataAvailable(const nsresult& aChannelStatus,
const nsCString& aData,
const uint64_t& aOffset,
const uint32_t& aCount) {
LOG(("GIOChannelChild::DoOnDataAvailable [this=%p]\n", this));
if (!mCanceled && NS_SUCCEEDED(mStatus)) {
mStatus = aChannelStatus;
}
if (mCanceled) {
return;
}
// NOTE: the OnDataAvailable contract requires the client to read all the data
// in the inputstream. This code relies on that ('data' will go away after
// this function). Apparently the previous, non-e10s behavior was to actually
// support only reading part of the data, allowing later calls to read the
// rest.
nsCOMPtr<nsIInputStream> stringStream;
nsresult rv =
NS_NewByteInputStream(getter_AddRefs(stringStream),
Span(aData).To(aCount), NS_ASSIGNMENT_DEPEND);
if (NS_FAILED(rv)) {
Cancel(rv);
return;
}
AutoEventEnqueuer ensureSerialDispatch(mEventQ);
rv = mListener->OnDataAvailable(this, stringStream, aOffset, aCount);
if (NS_FAILED(rv)) {
Cancel(rv);
}
stringStream->Close();
}
mozilla::ipc::IPCResult GIOChannelChild::RecvOnStopRequest(
const nsresult& aChannelStatus) {
LOG(("GIOChannelChild::RecvOnStopRequest [this=%p status=%" PRIx32 "]\n",
this, static_cast<uint32_t>(aChannelStatus)));
mEventQ->RunOrEnqueue(new NeckoTargetChannelFunctionEvent(
this, [self = UnsafePtr<GIOChannelChild>(this), aChannelStatus]() {
self->DoOnStopRequest(aChannelStatus);
}));
return IPC_OK();
}
void GIOChannelChild::DoOnStopRequest(const nsresult& aChannelStatus) {
LOG(("GIOChannelChild::DoOnStopRequest [this=%p status=%" PRIx32 "]\n", this,
static_cast<uint32_t>(aChannelStatus)));
if (!mCanceled) {
mStatus = aChannelStatus;
}
{ // Ensure that all queued ipdl events are dispatched before
// we initiate protocol deletion below.
mIsPending = false;
AutoEventEnqueuer ensureSerialDispatch(mEventQ);
(void)mListener->OnStopRequest(this, aChannelStatus);
mListener = nullptr;
if (mLoadGroup) {
mLoadGroup->RemoveRequest(this, nullptr, aChannelStatus);
}
}
// This calls NeckoChild::DeallocPGIOChannelChild(), which deletes |this| if
// IPDL holds the last reference. Don't rely on |this| existing after here!
Send__delete__(this);
}
mozilla::ipc::IPCResult GIOChannelChild::RecvFailedAsyncOpen(
const nsresult& aStatusCode) {
LOG(("GIOChannelChild::RecvFailedAsyncOpen [this=%p status=%" PRIx32 "]\n",
this, static_cast<uint32_t>(aStatusCode)));
mEventQ->RunOrEnqueue(new NeckoTargetChannelFunctionEvent(
this, [self = UnsafePtr<GIOChannelChild>(this), aStatusCode]() {
self->DoFailedAsyncOpen(aStatusCode);
}));
return IPC_OK();
}
void GIOChannelChild::DoFailedAsyncOpen(const nsresult& aStatusCode) {
LOG(("GIOChannelChild::DoFailedAsyncOpen [this=%p status=%" PRIx32 "]\n",
this, static_cast<uint32_t>(aStatusCode)));
mStatus = aStatusCode;
if (mLoadGroup) {
mLoadGroup->RemoveRequest(this, nullptr, aStatusCode);
}
if (mListener) {
mListener->OnStartRequest(this);
mIsPending = false;
mListener->OnStopRequest(this, aStatusCode);
} else {
mIsPending = false;
}
mListener = nullptr;
if (mIPCOpen) {
Send__delete__(this);
}
}
mozilla::ipc::IPCResult GIOChannelChild::RecvDeleteSelf() {
mEventQ->RunOrEnqueue(new NeckoTargetChannelFunctionEvent(
this,
[self = UnsafePtr<GIOChannelChild>(this)]() { self->DoDeleteSelf(); }));
return IPC_OK();
}
void GIOChannelChild::DoDeleteSelf() {
if (mIPCOpen) {
Send__delete__(this);
}
}
//-----------------------------------------------------------------------------
// GIOChannelChild::nsIResumableChannel
//-----------------------------------------------------------------------------
NS_IMETHODIMP
GIOChannelChild::Cancel(nsresult aStatus) {
LOG(("GIOChannelChild::Cancel [this=%p]\n", this));
if (mCanceled) {
return NS_OK;
}
mCanceled = true;
mStatus = aStatus;
if (mIPCOpen) {
SendCancel(aStatus);
}
return NS_OK;
}
NS_IMETHODIMP
GIOChannelChild::Suspend() {
NS_ENSURE_TRUE(mIPCOpen, NS_ERROR_NOT_AVAILABLE);
LOG(("GIOChannelChild::Suspend [this=%p]\n", this));
// SendSuspend only once, when suspend goes from 0 to 1.
if (!mSuspendCount++) {
SendSuspend();
mSuspendSent = true;
}
mEventQ->Suspend();
return NS_OK;
}
NS_IMETHODIMP
GIOChannelChild::Resume() {
NS_ENSURE_TRUE(mIPCOpen, NS_ERROR_NOT_AVAILABLE);
LOG(("GIOChannelChild::Resume [this=%p]\n", this));
// SendResume only once, when suspend count drops to 0.
if (!--mSuspendCount && mSuspendSent) {
SendResume();
}
mEventQ->Resume();
return NS_OK;
}
//-----------------------------------------------------------------------------
// GIOChannelChild::nsIChildChannel
//-----------------------------------------------------------------------------
NS_IMETHODIMP
GIOChannelChild::ConnectParent(uint32_t aId) {
NS_ENSURE_TRUE((gNeckoChild), NS_ERROR_FAILURE);
NS_ENSURE_TRUE(
!static_cast<ContentChild*>(gNeckoChild->Manager())->IsShuttingDown(),
NS_ERROR_FAILURE);
LOG(("GIOChannelChild::ConnectParent [this=%p]\n", this));
mozilla::dom::BrowserChild* browserChild = nullptr;
nsCOMPtr<nsIBrowserChild> iBrowserChild;
NS_QueryNotificationCallbacks(mCallbacks, mLoadGroup,
NS_GET_IID(nsIBrowserChild),
getter_AddRefs(iBrowserChild));
GetCallback(iBrowserChild);
if (iBrowserChild) {
browserChild =
static_cast<mozilla::dom::BrowserChild*>(iBrowserChild.get());
}
// This must happen before the constructor message is sent.
SetupNeckoTarget();
// The socket transport in the chrome process now holds a logical ref to us
// until OnStopRequest, or we do a redirect, or we hit an IPDL error.
AddIPDLReference();
GIOChannelConnectArgs connectArgs(aId);
if (!gNeckoChild->SendPGIOChannelConstructor(
this, browserChild, IPC::SerializedLoadContext(this), connectArgs)) {
return NS_ERROR_FAILURE;
}
return NS_OK;
}
NS_IMETHODIMP
GIOChannelChild::CompleteRedirectSetup(nsIStreamListener* aListener) {
LOG(("GIOChannelChild::CompleteRedirectSetup [this=%p]\n", this));
NS_ENSURE_TRUE(!mIsPending, NS_ERROR_IN_PROGRESS);
NS_ENSURE_TRUE(!mWasOpened, NS_ERROR_ALREADY_OPENED);
mIsPending = true;
mWasOpened = true;
mListener = aListener;
// add ourselves to the load group.
if (mLoadGroup) {
mLoadGroup->AddRequest(this, nullptr);
}
// We already have an open IPDL connection to the parent. If on-modify-request
// listeners or load group observers canceled us, let the parent handle it
// and send it back to us naturally.
return NS_OK;
}
void GIOChannelChild::SetupNeckoTarget() {
if (mNeckoTarget) {
return;
}
nsCOMPtr<nsILoadInfo> loadInfo = LoadInfo();
mNeckoTarget =
nsContentUtils::GetEventTargetByLoadInfo(loadInfo, TaskCategory::Network);
if (!mNeckoTarget) {
return;
}
gNeckoChild->SetEventTargetForActor(this, mNeckoTarget);
}
} // namespace net
} // namespace mozilla