mirror of
https://github.com/mozilla/gecko-dev.git
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89a2857a90
Based on original patch by David Zbarsky <dzbarsky@gmail.com>
201 lines
5.8 KiB
C++
201 lines
5.8 KiB
C++
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* vim: set ts=2 et sw=2 tw=80: */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this file,
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* You can obtain one at http://mozilla.org/MPL/2.0/. */
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#include "nsIContentChild.h"
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#include "mozilla/dom/ContentChild.h"
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#include "mozilla/dom/PermissionMessageUtils.h"
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#include "mozilla/dom/StructuredCloneUtils.h"
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#include "mozilla/dom/TabChild.h"
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#include "mozilla/dom/ipc/nsIRemoteBlob.h"
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#include "mozilla/ipc/InputStreamUtils.h"
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#include "JavaScriptChild.h"
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#include "nsDOMFile.h"
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#include "nsIJSRuntimeService.h"
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#include "nsPrintfCString.h"
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using namespace mozilla::ipc;
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using namespace mozilla::jsipc;
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namespace mozilla {
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namespace dom {
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PJavaScriptChild*
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nsIContentChild::AllocPJavaScriptChild()
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{
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nsCOMPtr<nsIJSRuntimeService> svc = do_GetService("@mozilla.org/js/xpc/RuntimeService;1");
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NS_ENSURE_TRUE(svc, nullptr);
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JSRuntime *rt;
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svc->GetRuntime(&rt);
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NS_ENSURE_TRUE(svc, nullptr);
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nsAutoPtr<JavaScriptChild> child(new JavaScriptChild(rt));
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if (!child->init()) {
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return nullptr;
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}
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return child.forget();
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}
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bool
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nsIContentChild::DeallocPJavaScriptChild(PJavaScriptChild* aChild)
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{
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static_cast<JavaScriptChild*>(aChild)->decref();
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return true;
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}
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PBrowserChild*
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nsIContentChild::AllocPBrowserChild(const IPCTabContext& aContext,
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const uint32_t& aChromeFlags,
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const uint64_t& aID,
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const bool& aIsForApp,
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const bool& aIsForBrowser)
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{
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// We'll happily accept any kind of IPCTabContext here; we don't need to
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// check that it's of a certain type for security purposes, because we
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// believe whatever the parent process tells us.
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MaybeInvalidTabContext tc(aContext);
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if (!tc.IsValid()) {
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NS_ERROR(nsPrintfCString("Received an invalid TabContext from "
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"the parent process. (%s) Crashing...",
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tc.GetInvalidReason()).get());
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MOZ_CRASH("Invalid TabContext received from the parent process.");
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}
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nsRefPtr<TabChild> child = TabChild::Create(this, tc.GetTabContext(), aChromeFlags);
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// The ref here is released in DeallocPBrowserChild.
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return child.forget().take();
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}
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bool
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nsIContentChild::DeallocPBrowserChild(PBrowserChild* aIframe)
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{
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TabChild* child = static_cast<TabChild*>(aIframe);
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NS_RELEASE(child);
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return true;
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}
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PBlobChild*
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nsIContentChild::AllocPBlobChild(const BlobConstructorParams& aParams)
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{
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return BlobChild::Create(this, aParams);
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}
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bool
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nsIContentChild::DeallocPBlobChild(PBlobChild* aActor)
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{
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delete aActor;
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return true;
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}
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BlobChild*
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nsIContentChild::GetOrCreateActorForBlob(nsIDOMBlob* aBlob)
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{
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MOZ_ASSERT(NS_IsMainThread());
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MOZ_ASSERT(aBlob);
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// If the blob represents a remote blob then we can simply pass its actor back
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// here.
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if (nsCOMPtr<nsIRemoteBlob> remoteBlob = do_QueryInterface(aBlob)) {
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BlobChild* actor =
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static_cast<BlobChild*>(
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static_cast<PBlobChild*>(remoteBlob->GetPBlob()));
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MOZ_ASSERT(actor);
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if (actor->Manager() == this) {
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return actor;
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}
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}
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// All blobs shared between processes must be immutable.
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nsCOMPtr<nsIMutable> mutableBlob = do_QueryInterface(aBlob);
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if (!mutableBlob || NS_FAILED(mutableBlob->SetMutable(false))) {
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NS_WARNING("Failed to make blob immutable!");
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return nullptr;
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}
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#ifdef DEBUG
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{
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// XXX This is only safe so long as all blob implementations in our tree
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// inherit nsDOMFileBase. If that ever changes then this will need to
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// grow a real interface or something.
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const auto* blob = static_cast<nsDOMFileBase*>(aBlob);
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MOZ_ASSERT(!blob->IsSizeUnknown());
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MOZ_ASSERT(!blob->IsDateUnknown());
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}
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#endif
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ParentBlobConstructorParams params;
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nsString contentType;
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nsresult rv = aBlob->GetType(contentType);
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NS_ENSURE_SUCCESS(rv, nullptr);
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uint64_t length;
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rv = aBlob->GetSize(&length);
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NS_ENSURE_SUCCESS(rv, nullptr);
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nsCOMPtr<nsIInputStream> stream;
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rv = aBlob->GetInternalStream(getter_AddRefs(stream));
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NS_ENSURE_SUCCESS(rv, nullptr);
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InputStreamParams inputStreamParams;
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nsTArray<mozilla::ipc::FileDescriptor> fds;
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SerializeInputStream(stream, inputStreamParams, fds);
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MOZ_ASSERT(fds.IsEmpty());
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params.optionalInputStreamParams() = inputStreamParams;
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nsCOMPtr<nsIDOMFile> file = do_QueryInterface(aBlob);
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if (file) {
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FileBlobConstructorParams fileParams;
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rv = file->GetName(fileParams.name());
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NS_ENSURE_SUCCESS(rv, nullptr);
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rv = file->GetMozLastModifiedDate(&fileParams.modDate());
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NS_ENSURE_SUCCESS(rv, nullptr);
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fileParams.contentType() = contentType;
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fileParams.length() = length;
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params.blobParams() = fileParams;
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} else {
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NormalBlobConstructorParams blobParams;
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blobParams.contentType() = contentType;
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blobParams.length() = length;
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params.blobParams() = blobParams;
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}
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BlobChild* actor = BlobChild::Create(this, aBlob);
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NS_ENSURE_TRUE(actor, nullptr);
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return SendPBlobConstructor(actor, params) ? actor : nullptr;
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}
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bool
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nsIContentChild::RecvAsyncMessage(const nsString& aMsg,
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const ClonedMessageData& aData,
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const InfallibleTArray<CpowEntry>& aCpows,
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const IPC::Principal& aPrincipal)
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{
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nsRefPtr<nsFrameMessageManager> cpm = nsFrameMessageManager::sChildProcessManager;
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if (cpm) {
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StructuredCloneData cloneData = ipc::UnpackClonedMessageDataForChild(aData);
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CpowIdHolder cpows(GetCPOWManager(), aCpows);
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cpm->ReceiveMessage(static_cast<nsIContentFrameMessageManager*>(cpm.get()),
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aMsg, false, &cloneData, &cpows, aPrincipal, nullptr);
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}
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return true;
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}
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} // dom
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} // mozilla
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