gecko/dom/ipc/nsIContentChild.cpp
"Kan-Ru Chen (陳侃如)" 54d6af82e8 Bug 879475 - Part 002. Add an nsIContentChild api r=jlebar
Based on original patch by David Zbarsky <dzbarsky@gmail.com>
2014-06-11 13:44:06 +08:00

201 lines
5.8 KiB
C++

/* -*- 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