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Bug 879475 - Part 002. Add an nsIContentChild api r=jlebar

Browse Source 
Based on original patch by David Zbarsky <dzbarsky@gmail.com>
This commit is contained in:
"Kan-Ru Chen (陳侃如)" 2014-06-11 13:44:06 +08:00
parent ddfb97c575
commit 54d6af82e8
11 changed files with 370 additions and 155 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
content/base/src/nsFrameMessageManager.cpp
View File

@ -154,7 +154,7 @@ struct BlobTraits<Child>
{
typedef mozilla::dom::BlobChild BlobType;
typedef mozilla::dom::PBlobChild ProtocolType;
typedef mozilla::dom::ContentChild ConcreteContentManagerType;
typedef mozilla::dom::nsIContentChild ConcreteContentManagerType;
};
template<ActorFlavorEnum>
@ -229,7 +229,7 @@ MessageManagerCallback::BuildClonedMessageDataForParent(nsIContentParent* aParen
}
bool
MessageManagerCallback::BuildClonedMessageDataForChild(ContentChild* aChild,
MessageManagerCallback::BuildClonedMessageDataForChild(nsIContentChild* aChild,
const StructuredCloneData& aData,
ClonedMessageData& aClonedData)
{

4
content/base/src/nsFrameMessageManager.h
View File

@ -33,7 +33,7 @@ namespace mozilla {
namespace dom {
class nsIContentParent;
class ContentChild;
class nsIContentChild;
class ClonedMessageData;
class MessageManagerReporter;
@ -102,7 +102,7 @@ protected:
bool BuildClonedMessageDataForParent(nsIContentParent* aParent,
const StructuredCloneData& aData,
ClonedMessageData& aClonedData);
bool BuildClonedMessageDataForChild(ContentChild* aChild,
bool BuildClonedMessageDataForChild(nsIContentChild* aChild,
const StructuredCloneData& aData,
ClonedMessageData& aClonedData);
};

13
dom/ipc/Blob.cpp
View File

@ -13,6 +13,7 @@
#include "mozilla/Monitor.h"
#include "mozilla/unused.h"
#include "mozilla/dom/nsIContentParent.h"
#include "mozilla/dom/nsIContentChild.h"
#include "mozilla/dom/PBlobStreamChild.h"
#include "mozilla/dom/PBlobStreamParent.h"
#include "mozilla/dom/PFileDescriptorSetParent.h"
@ -1056,7 +1057,7 @@ RemoteBlob::GetPBlob()
* BlobChild
******************************************************************************/
BlobChild::BlobChild(ContentChild* aManager, nsIDOMBlob* aBlob)
BlobChild::BlobChild(nsIContentChild* aManager, nsIDOMBlob* aBlob)
: mBlob(aBlob)
, mRemoteBlob(nullptr)
, mStrongManager(aManager)
@ -1073,7 +1074,7 @@ BlobChild::BlobChild(ContentChild* aManager, nsIDOMBlob* aBlob)
mBlobIsFile = !!file;
}
BlobChild::BlobChild(ContentChild* aManager,
BlobChild::BlobChild(nsIContentChild* aManager,
const ChildBlobConstructorParams& aParams)
: mBlob(nullptr)
, mRemoteBlob(nullptr)
@ -1105,7 +1106,7 @@ BlobChild::~BlobChild()
}
BlobChild*
BlobChild::Create(ContentChild* aManager,
BlobChild::Create(nsIContentChild* aManager,
const ChildBlobConstructorParams& aParams)
{
MOZ_ASSERT(NS_IsMainThread());
@ -1205,6 +1206,12 @@ BlobChild::SetMysteryBlobInfo(const nsString& aContentType, uint64_t aLength)
return SendResolveMystery(params);
}
nsIContentChild*
BlobChild::Manager()
{
return mStrongManager;
}
already_AddRefed<BlobChild::RemoteBlob>
BlobChild::CreateRemoteBlob(const ChildBlobConstructorParams& aParams)
{

16
dom/ipc/Blob.h
View File

@ -18,7 +18,7 @@ template <class> class nsRevocableEventPtr;
namespace mozilla {
namespace dom {
class ContentChild;
class nsIContentChild;
class nsIContentParent;
class PBlobStreamChild;
class PBlobStreamParent;
@ -26,14 +26,14 @@ class PBlobStreamParent;
class BlobChild MOZ_FINAL
: public PBlobChild
{
friend class ContentChild;
friend class nsIContentChild;
class RemoteBlob;
friend class RemoteBlob;
nsIDOMBlob* mBlob;
RemoteBlob* mRemoteBlob;
nsRefPtr<ContentChild> mStrongManager;
nsRefPtr<nsIContentChild> mStrongManager;
bool mOwnsBlob;
bool mBlobIsFile;
@ -41,7 +41,7 @@ class BlobChild MOZ_FINAL
public:
// This create function is called on the sending side.
static BlobChild*
Create(ContentChild* aManager, nsIDOMBlob* aBlob)
Create(nsIContentChild* aManager, nsIDOMBlob* aBlob)
{
return new BlobChild(aManager, aBlob);
}
@ -63,19 +63,21 @@ public:
bool
SetMysteryBlobInfo(const nsString& aContentType, uint64_t aLength);
nsIContentChild* Manager();
private:
// This constructor is called on the sending side.
BlobChild(ContentChild* aManager, nsIDOMBlob* aBlob);
BlobChild(nsIContentChild* aManager, nsIDOMBlob* aBlob);
// This constructor is called on the receiving side.
BlobChild(ContentChild* aManager, const ChildBlobConstructorParams& aParams);
BlobChild(nsIContentChild* aManager, const ChildBlobConstructorParams& aParams);
// Only destroyed by ContentChild.
~BlobChild();
// This create function is called on the receiving side by ContentChild.
static BlobChild*
Create(ContentChild* aManager, const ChildBlobConstructorParams& aParams);
Create(nsIContentChild* aManager, const ChildBlobConstructorParams& aParams);
static already_AddRefed<RemoteBlob>
CreateRemoteBlob(const ChildBlobConstructorParams& aParams);

168
dom/ipc/ContentChild.cpp
View File

@ -18,12 +18,14 @@
#include "TabChild.h"
#include "mozilla/Attributes.h"
#include "mozilla/dom/asmjscache/AsmJSCache.h"
#include "mozilla/dom/asmjscache/PAsmJSCacheEntryChild.h"
#include "mozilla/Preferences.h"
#include "mozilla/dom/DOMStorageIPC.h"
#include "mozilla/dom/ExternalHelperAppChild.h"
#include "mozilla/dom/PCrashReporterChild.h"
#include "mozilla/dom/DOMStorageIPC.h"
#include "mozilla/dom/Promise.h"
#include "mozilla/dom/asmjscache/AsmJSCache.h"
#include "mozilla/dom/asmjscache/PAsmJSCacheEntryChild.h"
#include "mozilla/dom/nsIContentChild.h"
#include "mozilla/hal_sandbox/PHalChild.h"
#include "mozilla/ipc/BackgroundChild.h"
#include "mozilla/ipc/FileDescriptorUtils.h"
@ -31,10 +33,9 @@
#include "mozilla/ipc/TestShellChild.h"
#include "mozilla/layers/CompositorChild.h"
#include "mozilla/layers/ImageBridgeChild.h"
#include "mozilla/layers/SharedBufferManagerChild.h"
#include "mozilla/layers/PCompositorChild.h"
#include "mozilla/layers/SharedBufferManagerChild.h"
#include "mozilla/net/NeckoChild.h"
#include "mozilla/Preferences.h"
#if defined(MOZ_CONTENT_SANDBOX)
#if defined(XP_WIN)
@ -497,6 +498,11 @@ ContentChild::~ContentChild()
{
}
NS_INTERFACE_MAP_BEGIN(ContentChild)
NS_INTERFACE_MAP_ENTRY(nsIContentChild)
NS_INTERFACE_MAP_ENTRY(nsISupports)
NS_INTERFACE_MAP_END
bool
ContentChild::Init(MessageLoop* aIOLoop,
base::ProcessHandle aParentHandle,
@ -900,51 +906,43 @@ ContentChild::AllocPJavaScriptChild()
{
MOZ_ASSERT(!ManagedPJavaScriptChild().Length());
nsCOMPtr<nsIJSRuntimeService> svc = do_GetService("@mozilla.org/js/xpc/RuntimeService;1");
NS_ENSURE_TRUE(svc, nullptr);
JSRuntime *rt;
svc->GetRuntime(&rt);
NS_ENSURE_TRUE(svc, nullptr);
mozilla::jsipc::JavaScriptChild *child = new mozilla::jsipc::JavaScriptChild(rt);
if (!child->init()) {
delete child;
return nullptr;
}
return child;
return nsIContentChild::AllocPJavaScriptChild();
}
bool
ContentChild::DeallocPJavaScriptChild(PJavaScriptChild *child)
ContentChild::DeallocPJavaScriptChild(PJavaScriptChild *aChild)
{
static_cast<mozilla::jsipc::JavaScriptChild *>(child)->decref();
return true;
return nsIContentChild::DeallocPJavaScriptChild(aChild);
}
PBrowserChild*
ContentChild::AllocPBrowserChild(const IPCTabContext& aContext,
const uint32_t& aChromeFlags,
const uint64_t& aId,
const uint64_t& aID,
const bool& aIsForApp,
const bool& aIsForBrowser)
{
// We'll happily accept any kind of IPCTabContext here; we don't need to
// check that it's of a certain type for security purposes, because we
// believe whatever the parent process tells us.
return nsIContentChild::AllocPBrowserChild(aContext,
aChromeFlags,
aID,
aIsForApp,
aIsForBrowser);
}
MaybeInvalidTabContext tc(aContext);
if (!tc.IsValid()) {
NS_ERROR(nsPrintfCString("Received an invalid TabContext from "
"the parent process. (%s) Crashing...",
tc.GetInvalidReason()).get());
MOZ_CRASH("Invalid TabContext received from the parent process.");
}
nsRefPtr<TabChild> child = TabChild::Create(this, tc.GetTabContext(), aChromeFlags);
// The ref here is released in DeallocPBrowserChild.
return child.forget().take();
bool
ContentChild::SendPBrowserConstructor(PBrowserChild* aActor,
const IPCTabContext& aContext,
const uint32_t& aChromeFlags,
const uint64_t& aID,
const bool& aIsForApp,
const bool& aIsForBrowser)
{
return PContentChild::SendPBrowserConstructor(aActor,
aContext,
aChromeFlags,
aID,
aIsForApp,
aIsForBrowser);
}
bool
@ -998,108 +996,28 @@ ContentChild::DeallocPFileDescriptorSetChild(PFileDescriptorSetChild* aActor)
}
bool
ContentChild::DeallocPBrowserChild(PBrowserChild* iframe)
ContentChild::DeallocPBrowserChild(PBrowserChild* aIframe)
{
TabChild* child = static_cast<TabChild*>(iframe);
NS_RELEASE(child);
return true;
return nsIContentChild::DeallocPBrowserChild(aIframe);
}
PBlobChild*
ContentChild::AllocPBlobChild(const BlobConstructorParams& aParams)
{
return BlobChild::Create(this, aParams);
return nsIContentChild::AllocPBlobChild(aParams);
}
bool
ContentChild::DeallocPBlobChild(PBlobChild* aActor)
{
delete aActor;
return true;
return nsIContentChild::DeallocPBlobChild(aActor);
}
BlobChild*
ContentChild::GetOrCreateActorForBlob(nsIDOMBlob* aBlob)
PBlobChild*
ContentChild::SendPBlobConstructor(PBlobChild* aActor,
const BlobConstructorParams& aParams)
{
MOZ_ASSERT(NS_IsMainThread());
MOZ_ASSERT(aBlob);
// If the blob represents a remote blob then we can simply pass its actor back
// here.
if (nsCOMPtr<nsIRemoteBlob> remoteBlob = do_QueryInterface(aBlob)) {
BlobChild* actor =
static_cast<BlobChild*>(
static_cast<PBlobChild*>(remoteBlob->GetPBlob()));
MOZ_ASSERT(actor);
return actor;
}
// All blobs shared between processes must be immutable.
nsCOMPtr<nsIMutable> mutableBlob = do_QueryInterface(aBlob);
if (!mutableBlob || NS_FAILED(mutableBlob->SetMutable(false))) {
NS_WARNING("Failed to make blob immutable!");
return nullptr;
}
#ifdef DEBUG
{
// XXX This is only safe so long as all blob implementations in our tree
// inherit nsDOMFileBase. If that ever changes then this will need to
// grow a real interface or something.
const auto* blob = static_cast<nsDOMFileBase*>(aBlob);
MOZ_ASSERT(!blob->IsSizeUnknown());
MOZ_ASSERT(!blob->IsDateUnknown());
}
#endif
ParentBlobConstructorParams params;
nsString contentType;
nsresult rv = aBlob->GetType(contentType);
NS_ENSURE_SUCCESS(rv, nullptr);
uint64_t length;
rv = aBlob->GetSize(&length);
NS_ENSURE_SUCCESS(rv, nullptr);
nsCOMPtr<nsIInputStream> stream;
rv = aBlob->GetInternalStream(getter_AddRefs(stream));
NS_ENSURE_SUCCESS(rv, nullptr);
InputStreamParams inputStreamParams;
nsTArray<mozilla::ipc::FileDescriptor> fds;
SerializeInputStream(stream, inputStreamParams, fds);
MOZ_ASSERT(fds.IsEmpty());
params.optionalInputStreamParams() = inputStreamParams;
nsCOMPtr<nsIDOMFile> file = do_QueryInterface(aBlob);
if (file) {
FileBlobConstructorParams fileParams;
rv = file->GetName(fileParams.name());
NS_ENSURE_SUCCESS(rv, nullptr);
rv = file->GetMozLastModifiedDate(&fileParams.modDate());
NS_ENSURE_SUCCESS(rv, nullptr);
fileParams.contentType() = contentType;
fileParams.length() = length;
params.blobParams() = fileParams;
} else {
NormalBlobConstructorParams blobParams;
blobParams.contentType() = contentType;
blobParams.length() = length;
params.blobParams() = blobParams;
}
BlobChild* actor = BlobChild::Create(this, aBlob);
NS_ENSURE_TRUE(actor, nullptr);
return SendPBlobConstructor(actor, params) ? actor : nullptr;
return PContentChild::SendPBlobConstructor(aActor, aParams);
}
PCrashReporterChild*

17
dom/ipc/ContentChild.h
View File

@ -8,6 +8,7 @@
#define mozilla_dom_ContentChild_h
#include "mozilla/Attributes.h"
#include "mozilla/dom/nsIContentChild.h"
#include "mozilla/dom/PContentChild.h"
#include "mozilla/dom/ipc/Blob.h"
#include "nsHashKeys.h"
@ -48,6 +49,7 @@ class ClonedMessageData;
class PFileDescriptorSetChild;
class ContentChild : public PContentChild
, public nsIContentChild
{
typedef mozilla::dom::ClonedMessageData ClonedMessageData;
typedef mozilla::ipc::OptionalURIParams OptionalURIParams;
@ -56,8 +58,9 @@ class ContentChild : public PContentChild
public:
ContentChild();
virtual ~ContentChild();
nsrefcnt AddRef() { return 1; }
nsrefcnt Release() { return 1; }
NS_IMETHOD QueryInterface(REFNSIID aIID, void** aInstancePtr);
NS_IMETHOD_(MozExternalRefCountType) AddRef(void) { return 1; }
NS_IMETHOD_(MozExternalRefCountType) Release(void) { return 1; }
struct AppInfo
{
@ -299,7 +302,9 @@ public:
bool IsForApp() { return mIsForApp; }
bool IsForBrowser() { return mIsForBrowser; }
BlobChild* GetOrCreateActorForBlob(nsIDOMBlob* aBlob);
virtual PBlobChild*
SendPBlobConstructor(PBlobChild* actor,
const BlobConstructorParams& params) MOZ_OVERRIDE;
virtual PFileDescriptorSetChild*
AllocPFileDescriptorSetChild(const FileDescriptor&) MOZ_OVERRIDE;
@ -307,6 +312,12 @@ public:
virtual bool
DeallocPFileDescriptorSetChild(PFileDescriptorSetChild*) MOZ_OVERRIDE;
virtual bool SendPBrowserConstructor(PBrowserChild* actor,
const IPCTabContext& context,
const uint32_t& chromeFlags,
const uint64_t& aID,
const bool& aIsForApp,
const bool& aIsForBrowser) MOZ_OVERRIDE;
protected:
virtual bool RecvPBrowserConstructor(PBrowserChild* aCctor,
const IPCTabContext& aContext,

16
dom/ipc/TabChild.cpp
View File

@ -652,7 +652,7 @@ TabChild::PreloadSlowThings()
}
/*static*/ already_AddRefed<TabChild>
TabChild::Create(ContentChild* aManager, const TabContext &aContext, uint32_t aChromeFlags)
TabChild::Create(nsIContentChild* aManager, const TabContext &aContext, uint32_t aChromeFlags)
{
if (sPreallocatedTab &&
sPreallocatedTab->mChromeFlags == aChromeFlags &&
@ -674,7 +674,7 @@ TabChild::Create(ContentChild* aManager, const TabContext &aContext, uint32_t aC
}
TabChild::TabChild(ContentChild* aManager, const TabContext& aContext, uint32_t aChromeFlags)
TabChild::TabChild(nsIContentChild* aManager, const TabContext& aContext, uint32_t aChromeFlags)
: TabContext(aContext)
, mRemoteFrame(nullptr)
, mManager(aManager)
@ -2322,7 +2322,7 @@ TabChild::RecvAsyncMessage(const nsString& aMessage,
StructuredCloneData cloneData = UnpackClonedMessageDataForChild(aData);
nsRefPtr<nsFrameMessageManager> mm =
static_cast<nsFrameMessageManager*>(mTabChildGlobal->mMessageManager.get());
CpowIdHolder cpows(static_cast<ContentChild*>(Manager())->GetCPOWManager(), aCpows);
CpowIdHolder cpows(Manager()->GetCPOWManager(), aCpows);
mm->ReceiveMessage(static_cast<EventTarget*>(mTabChildGlobal),
aMessage, false, &cloneData, &cpows, aPrincipal, nullptr);
}
@ -2668,14 +2668,13 @@ TabChild::DoSendBlockingMessage(JSContext* aCx,
InfallibleTArray<nsString>* aJSONRetVal,
bool aIsSync)
{
ContentChild* cc = Manager();
ClonedMessageData data;
if (!BuildClonedMessageDataForChild(cc, aData, data)) {
if (!BuildClonedMessageDataForChild(Manager(), aData, data)) {
return false;
}
InfallibleTArray<CpowEntry> cpows;
if (sCpowsEnabled) {
if (!cc->GetCPOWManager()->Wrap(aCx, aCpows, &cpows)) {
if (!Manager()->GetCPOWManager()->Wrap(aCx, aCpows, &cpows)) {
return false;
}
}
@ -2695,14 +2694,13 @@ TabChild::DoSendAsyncMessage(JSContext* aCx,
JS::Handle<JSObject *> aCpows,
nsIPrincipal* aPrincipal)
{
ContentChild* cc = Manager();
ClonedMessageData data;
if (!BuildClonedMessageDataForChild(cc, aData, data)) {
if (!BuildClonedMessageDataForChild(Manager(), aData, data)) {
return false;
}
InfallibleTArray<CpowEntry> cpows;
if (sCpowsEnabled) {
if (!cc->GetCPOWManager()->Wrap(aCx, aCpows, &cpows)) {
if (!Manager()->GetCPOWManager()->Wrap(aCx, aCpows, &cpows)) {
return false;
}
}

8
dom/ipc/TabChild.h
View File

@ -250,7 +250,7 @@ public:
/** Return a TabChild with the given attributes. */
static already_AddRefed<TabChild>
Create(ContentChild* aManager, const TabContext& aContext, uint32_t aChromeFlags);
Create(nsIContentChild* aManager, const TabContext& aContext, uint32_t aChromeFlags);
virtual ~TabChild();
@ -430,7 +430,7 @@ public:
const nsAString& aPath,
nsICachedFileDescriptorListener* aCallback);
ContentChild* Manager() { return mManager; }
nsIContentChild* Manager() { return mManager; }
bool GetUpdateHitRegion() { return mUpdateHitRegion; }
@ -483,7 +483,7 @@ private:
*
* |aIsBrowserElement| indicates whether we're a browser (but not an app).
*/
TabChild(ContentChild* aManager, const TabContext& aContext, uint32_t aChromeFlags);
TabChild(nsIContentChild* aManager, const TabContext& aContext, uint32_t aChromeFlags);
nsresult Init();
@ -536,7 +536,7 @@ private:
nsCOMPtr<nsIWidget> mWidget;
nsCOMPtr<nsIURI> mLastURI;
RenderFrameChild* mRemoteFrame;
nsRefPtr<ContentChild> mManager;
nsRefPtr<nsIContentChild> mManager;
uint32_t mChromeFlags;
uint64_t mLayersId;
nsIntRect mOuterRect;

2
dom/ipc/moz.build
View File

@ -25,6 +25,7 @@ EXPORTS.mozilla.dom += [
'FileDescriptorSetChild.h',
'FileDescriptorSetParent.h',
'FilePickerParent.h',
'nsIContentChild.h',
'nsIContentParent.h',
'PermissionMessageUtils.h',
'StructuredCloneUtils.h',
@ -49,6 +50,7 @@ UNIFIED_SOURCES += [
'FileDescriptorSetChild.cpp',
'FileDescriptorSetParent.cpp',
'FilePickerParent.cpp',
'nsIContentChild.cpp',
'nsIContentParent.cpp',
'PermissionMessageUtils.cpp',
'PreallocatedProcessManager.cpp',

200
dom/ipc/nsIContentChild.cpp Normal file
View File

@ -0,0 +1,200 @@
/* -*- 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 "nsIContentChild.h"
#include "mozilla/dom/ContentChild.h"
#include "mozilla/dom/PermissionMessageUtils.h"
#include "mozilla/dom/StructuredCloneUtils.h"
#include "mozilla/dom/TabChild.h"
#include "mozilla/dom/ipc/nsIRemoteBlob.h"
#include "mozilla/ipc/InputStreamUtils.h"
#include "JavaScriptChild.h"
#include "nsDOMFile.h"
#include "nsIJSRuntimeService.h"
#include "nsPrintfCString.h"
using namespace mozilla::ipc;
using namespace mozilla::jsipc;
namespace mozilla {
namespace dom {
PJavaScriptChild*
nsIContentChild::AllocPJavaScriptChild()
{
nsCOMPtr<nsIJSRuntimeService> svc = do_GetService("@mozilla.org/js/xpc/RuntimeService;1");
NS_ENSURE_TRUE(svc, nullptr);
JSRuntime *rt;
svc->GetRuntime(&rt);
NS_ENSURE_TRUE(svc, nullptr);
nsAutoPtr<JavaScriptChild> child(new JavaScriptChild(rt));
if (!child->init()) {
return nullptr;
}
return child.forget();
}
bool
nsIContentChild::DeallocPJavaScriptChild(PJavaScriptChild* aChild)
{
static_cast<JavaScriptChild*>(aChild)->decref();
return true;
}
PBrowserChild*
nsIContentChild::AllocPBrowserChild(const IPCTabContext& aContext,
const uint32_t& aChromeFlags,
const uint64_t& aID,
const bool& aIsForApp,
const bool& aIsForBrowser)
{
// We'll happily accept any kind of IPCTabContext here; we don't need to
// check that it's of a certain type for security purposes, because we
// believe whatever the parent process tells us.
MaybeInvalidTabContext tc(aContext);
if (!tc.IsValid()) {
NS_ERROR(nsPrintfCString("Received an invalid TabContext from "
"the parent process. (%s) Crashing...",
tc.GetInvalidReason()).get());
MOZ_CRASH("Invalid TabContext received from the parent process.");
}
nsRefPtr<TabChild> child = TabChild::Create(this, tc.GetTabContext(), aChromeFlags);
// The ref here is released in DeallocPBrowserChild.
return child.forget().take();
}
bool
nsIContentChild::DeallocPBrowserChild(PBrowserChild* aIframe)
{
TabChild* child = static_cast<TabChild*>(aIframe);
NS_RELEASE(child);
return true;
}
PBlobChild*
nsIContentChild::AllocPBlobChild(const BlobConstructorParams& aParams)
{
return BlobChild::Create(this, aParams);
}
bool
nsIContentChild::DeallocPBlobChild(PBlobChild* aActor)
{
delete aActor;
return true;
}
BlobChild*
nsIContentChild::GetOrCreateActorForBlob(nsIDOMBlob* aBlob)
{
MOZ_ASSERT(NS_IsMainThread());
MOZ_ASSERT(aBlob);
// If the blob represents a remote blob then we can simply pass its actor back
// here.
if (nsCOMPtr<nsIRemoteBlob> remoteBlob = do_QueryInterface(aBlob)) {
BlobChild* actor =
static_cast<BlobChild*>(
static_cast<PBlobChild*>(remoteBlob->GetPBlob()));
MOZ_ASSERT(actor);
if (actor->Manager() == this) {
return actor;
}
}
// All blobs shared between processes must be immutable.
nsCOMPtr<nsIMutable> mutableBlob = do_QueryInterface(aBlob);
if (!mutableBlob || NS_FAILED(mutableBlob->SetMutable(false))) {
NS_WARNING("Failed to make blob immutable!");
return nullptr;
}
#ifdef DEBUG
{
// XXX This is only safe so long as all blob implementations in our tree
// inherit nsDOMFileBase. If that ever changes then this will need to
// grow a real interface or something.
const auto* blob = static_cast<nsDOMFileBase*>(aBlob);
MOZ_ASSERT(!blob->IsSizeUnknown());
MOZ_ASSERT(!blob->IsDateUnknown());
}
#endif
ParentBlobConstructorParams params;
nsString contentType;
nsresult rv = aBlob->GetType(contentType);
NS_ENSURE_SUCCESS(rv, nullptr);
uint64_t length;
rv = aBlob->GetSize(&length);
NS_ENSURE_SUCCESS(rv, nullptr);
nsCOMPtr<nsIInputStream> stream;
rv = aBlob->GetInternalStream(getter_AddRefs(stream));
NS_ENSURE_SUCCESS(rv, nullptr);
InputStreamParams inputStreamParams;
nsTArray<mozilla::ipc::FileDescriptor> fds;
SerializeInputStream(stream, inputStreamParams, fds);
MOZ_ASSERT(fds.IsEmpty());
params.optionalInputStreamParams() = inputStreamParams;
nsCOMPtr<nsIDOMFile> file = do_QueryInterface(aBlob);
if (file) {
FileBlobConstructorParams fileParams;
rv = file->GetName(fileParams.name());
NS_ENSURE_SUCCESS(rv, nullptr);
rv = file->GetMozLastModifiedDate(&fileParams.modDate());
NS_ENSURE_SUCCESS(rv, nullptr);
fileParams.contentType() = contentType;
fileParams.length() = length;
params.blobParams() = fileParams;
} else {
NormalBlobConstructorParams blobParams;
blobParams.contentType() = contentType;
blobParams.length() = length;
params.blobParams() = blobParams;
}
BlobChild* actor = BlobChild::Create(this, aBlob);
NS_ENSURE_TRUE(actor, nullptr);
return SendPBlobConstructor(actor, params) ? actor : nullptr;
}
bool
nsIContentChild::RecvAsyncMessage(const nsString& aMsg,
const ClonedMessageData& aData,
const InfallibleTArray<CpowEntry>& aCpows,
const IPC::Principal& aPrincipal)
{
nsRefPtr<nsFrameMessageManager> cpm = nsFrameMessageManager::sChildProcessManager;
if (cpm) {
StructuredCloneData cloneData = ipc::UnpackClonedMessageDataForChild(aData);
CpowIdHolder cpows(GetCPOWManager(), aCpows);
cpm->ReceiveMessage(static_cast<nsIContentFrameMessageManager*>(cpm.get()),
aMsg, false, &cloneData, &cpows, aPrincipal, nullptr);
}
return true;
}
} // dom
} // mozilla

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dom/ipc/nsIContentChild.h Normal file
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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/. */
#ifndef mozilla_dom_nsIContentChild_h
#define mozilla_dom_nsIContentChild_h
#include "mozilla/dom/ipc/Blob.h"
#include "nsISupports.h"
#define NS_ICONTENTCHILD_IID \
{ 0x4eed2e73, 0x94ba, 0x48a8, \
{ 0xa2, 0xd1, 0xa5, 0xed, 0x86, 0xd7, 0xbb, 0xe4 } }
class PBrowserChild;
namespace IPC {
class Principal;
} // IPC
namespace mozilla {
namespace jsipc {
class PJavaScriptChild;
class JavaScriptChild;
class CpowEntry;
} // jsipc
namespace dom {
struct IPCTabContext;
class nsIContentChild : public nsISupports
{
public:
NS_DECLARE_STATIC_IID_ACCESSOR(NS_ICONTENTCHILD_IID)
BlobChild* GetOrCreateActorForBlob(nsIDOMBlob* aBlob);
virtual PBlobChild*
SendPBlobConstructor(PBlobChild* aActor,
const BlobConstructorParams& params) = 0;
virtual bool
SendPBrowserConstructor(PBrowserChild* aActor,
const IPCTabContext& aContext,
const uint32_t& aChromeFlags,
const uint64_t& aID,
const bool& aIsForApp,
const bool& aIsForBrowser) = 0;
virtual jsipc::JavaScriptChild* GetCPOWManager() = 0;
protected:
virtual jsipc::PJavaScriptChild* AllocPJavaScriptChild();
virtual bool DeallocPJavaScriptChild(jsipc::PJavaScriptChild*);
virtual PBrowserChild* AllocPBrowserChild(const IPCTabContext& aContext,
const uint32_t& aChromeFlags,
const uint64_t& aID,
const bool& aIsForApp,
const bool& aIsForBrowser);
virtual bool DeallocPBrowserChild(PBrowserChild*);
virtual PBlobChild* AllocPBlobChild(const BlobConstructorParams& aParams);
virtual bool DeallocPBlobChild(PBlobChild*);
virtual bool RecvAsyncMessage(const nsString& aMsg,
const ClonedMessageData& aData,
const InfallibleTArray<jsipc::CpowEntry>& aCpows,
const IPC::Principal& aPrincipal);
};
NS_DEFINE_STATIC_IID_ACCESSOR(nsIContentChild, NS_ICONTENTCHILD_IID)
} // dom
} // mozilla
#endif /* mozilla_dom_nsIContentChild_h */