mirror of
https://github.com/mozilla/gecko-dev.git
synced 2024-10-30 13:45:27 +00:00
1534 lines
38 KiB
C++
1534 lines
38 KiB
C++
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
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/* vim: set sw=4 ts=8 et 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
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#include "mozilla/Assertions.h"
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#include "mozilla/DebugOnly.h"
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#include "base/basictypes.h"
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#include "Blob.h"
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#include "nsIDOMFile.h"
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#include "nsIInputStream.h"
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#include "nsIIPCSerializableInputStream.h"
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#include "nsIMultiplexInputStream.h"
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#include "nsIRemoteBlob.h"
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#include "nsISeekableStream.h"
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#include "mozilla/Monitor.h"
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#include "mozilla/unused.h"
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#include "mozilla/ipc/InputStreamUtils.h"
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#include "nsDOMFile.h"
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#include "nsProxyRelease.h"
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#include "nsThreadUtils.h"
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#include "jsapi.h"
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#include "ContentChild.h"
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#include "ContentParent.h"
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#include "nsNetCID.h"
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#define PRIVATE_REMOTE_INPUT_STREAM_IID \
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{0x30c7699f, 0x51d2, 0x48c8, {0xad, 0x56, 0xc0, 0x16, 0xd7, 0x6f, 0x71, 0x27}}
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using namespace mozilla::dom;
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using namespace mozilla::dom::ipc;
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using namespace mozilla::ipc;
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namespace {
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/**
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* Ensure that a nsCOMPtr/nsRefPtr is released on the main thread.
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*/
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template <template <class> class SmartPtr, class T>
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void
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ProxyReleaseToMainThread(SmartPtr<T>& aDoomed)
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{
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MOZ_ASSERT(!NS_IsMainThread());
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nsCOMPtr<nsIThread> mainThread = do_GetMainThread();
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NS_ENSURE_TRUE_VOID(mainThread);
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if (NS_FAILED(NS_ProxyRelease(mainThread, aDoomed, true))) {
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NS_WARNING("Failed to proxy release to main thread!");
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}
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}
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class NS_NO_VTABLE IPrivateRemoteInputStream : public nsISupports
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{
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public:
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NS_DECLARE_STATIC_IID_ACCESSOR(PRIVATE_REMOTE_INPUT_STREAM_IID)
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// This will return the underlying stream.
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virtual nsIInputStream*
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BlockAndGetInternalStream() = 0;
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};
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NS_DEFINE_STATIC_IID_ACCESSOR(IPrivateRemoteInputStream,
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PRIVATE_REMOTE_INPUT_STREAM_IID)
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// This class exists to keep a blob alive at least as long as its internal
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// stream.
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class BlobInputStreamTether : public nsIMultiplexInputStream,
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public nsISeekableStream,
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public nsIIPCSerializableInputStream
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{
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nsCOMPtr<nsIInputStream> mStream;
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nsCOMPtr<nsIDOMBlob> mSourceBlob;
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nsIMultiplexInputStream* mWeakMultiplexStream;
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nsISeekableStream* mWeakSeekableStream;
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nsIIPCSerializableInputStream* mWeakSerializableStream;
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public:
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NS_DECL_THREADSAFE_ISUPPORTS
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NS_FORWARD_NSIINPUTSTREAM(mStream->)
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NS_FORWARD_SAFE_NSIMULTIPLEXINPUTSTREAM(mWeakMultiplexStream)
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NS_FORWARD_SAFE_NSISEEKABLESTREAM(mWeakSeekableStream)
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NS_FORWARD_SAFE_NSIIPCSERIALIZABLEINPUTSTREAM(mWeakSerializableStream)
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BlobInputStreamTether(nsIInputStream* aStream, nsIDOMBlob* aSourceBlob)
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: mStream(aStream), mSourceBlob(aSourceBlob), mWeakMultiplexStream(nullptr),
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mWeakSeekableStream(nullptr), mWeakSerializableStream(nullptr)
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{
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MOZ_ASSERT(aStream);
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MOZ_ASSERT(aSourceBlob);
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nsCOMPtr<nsIMultiplexInputStream> multiplexStream =
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do_QueryInterface(aStream);
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if (multiplexStream) {
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MOZ_ASSERT(SameCOMIdentity(aStream, multiplexStream));
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mWeakMultiplexStream = multiplexStream;
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}
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nsCOMPtr<nsISeekableStream> seekableStream = do_QueryInterface(aStream);
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if (seekableStream) {
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MOZ_ASSERT(SameCOMIdentity(aStream, seekableStream));
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mWeakSeekableStream = seekableStream;
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}
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nsCOMPtr<nsIIPCSerializableInputStream> serializableStream =
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do_QueryInterface(aStream);
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if (serializableStream) {
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MOZ_ASSERT(SameCOMIdentity(aStream, serializableStream));
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mWeakSerializableStream = serializableStream;
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}
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}
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protected:
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virtual ~BlobInputStreamTether()
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{
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MOZ_ASSERT(mStream);
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MOZ_ASSERT(mSourceBlob);
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if (!NS_IsMainThread()) {
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mStream = nullptr;
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ProxyReleaseToMainThread(mSourceBlob);
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}
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}
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};
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NS_IMPL_ADDREF(BlobInputStreamTether)
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NS_IMPL_RELEASE(BlobInputStreamTether)
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NS_INTERFACE_MAP_BEGIN(BlobInputStreamTether)
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NS_INTERFACE_MAP_ENTRY(nsIInputStream)
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NS_INTERFACE_MAP_ENTRY_CONDITIONAL(nsIMultiplexInputStream,
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mWeakMultiplexStream)
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NS_INTERFACE_MAP_ENTRY_CONDITIONAL(nsISeekableStream, mWeakSeekableStream)
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NS_INTERFACE_MAP_ENTRY_CONDITIONAL(nsIIPCSerializableInputStream,
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mWeakSerializableStream)
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NS_INTERFACE_MAP_ENTRY_AMBIGUOUS(nsISupports, nsIInputStream)
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NS_INTERFACE_MAP_END
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class RemoteInputStream : public nsIInputStream,
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public nsISeekableStream,
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public nsIIPCSerializableInputStream,
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public IPrivateRemoteInputStream
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{
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mozilla::Monitor mMonitor;
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nsCOMPtr<nsIInputStream> mStream;
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nsCOMPtr<nsIDOMBlob> mSourceBlob;
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nsISeekableStream* mWeakSeekableStream;
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ActorFlavorEnum mOrigin;
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public:
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NS_DECL_THREADSAFE_ISUPPORTS
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RemoteInputStream(nsIDOMBlob* aSourceBlob, ActorFlavorEnum aOrigin)
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: mMonitor("RemoteInputStream.mMonitor"), mSourceBlob(aSourceBlob),
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mWeakSeekableStream(nullptr), mOrigin(aOrigin)
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{
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MOZ_ASSERT(NS_IsMainThread());
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MOZ_ASSERT(aSourceBlob);
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}
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void
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Serialize(InputStreamParams& aParams)
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{
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nsCOMPtr<nsIRemoteBlob> remote = do_QueryInterface(mSourceBlob);
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MOZ_ASSERT(remote);
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if (mOrigin == Parent) {
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aParams = RemoteInputStreamParams(
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static_cast<PBlobParent*>(remote->GetPBlob()), nullptr);
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} else {
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aParams = RemoteInputStreamParams(
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nullptr, static_cast<PBlobChild*>(remote->GetPBlob()));
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}
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}
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bool
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Deserialize(const InputStreamParams& aParams)
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{
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// See InputStreamUtils.cpp to see how deserialization of a
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// RemoteInputStream is special-cased.
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MOZ_CRASH("RemoteInputStream should never be deserialized");
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}
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void
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SetStream(nsIInputStream* aStream)
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{
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MOZ_ASSERT(NS_IsMainThread());
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MOZ_ASSERT(aStream);
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nsCOMPtr<nsIInputStream> stream = aStream;
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nsCOMPtr<nsISeekableStream> seekableStream = do_QueryInterface(aStream);
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MOZ_ASSERT_IF(seekableStream, SameCOMIdentity(aStream, seekableStream));
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{
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mozilla::MonitorAutoLock lock(mMonitor);
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MOZ_ASSERT(!mStream);
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MOZ_ASSERT(!mWeakSeekableStream);
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mStream.swap(stream);
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mWeakSeekableStream = seekableStream;
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mMonitor.Notify();
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}
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}
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NS_IMETHOD
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Close() MOZ_OVERRIDE
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{
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nsresult rv = BlockAndWaitForStream();
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NS_ENSURE_SUCCESS(rv, rv);
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nsCOMPtr<nsIDOMBlob> sourceBlob;
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mSourceBlob.swap(sourceBlob);
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rv = mStream->Close();
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NS_ENSURE_SUCCESS(rv, rv);
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return NS_OK;
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}
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NS_IMETHOD
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Available(uint64_t* aAvailable) MOZ_OVERRIDE
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{
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// See large comment in FileInputStreamWrapper::Available.
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if (NS_IsMainThread()) {
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return NS_BASE_STREAM_CLOSED;
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}
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nsresult rv = BlockAndWaitForStream();
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NS_ENSURE_SUCCESS(rv, rv);
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rv = mStream->Available(aAvailable);
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NS_ENSURE_SUCCESS(rv, rv);
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return NS_OK;
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}
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NS_IMETHOD
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Read(char* aBuffer, uint32_t aCount, uint32_t* aResult) MOZ_OVERRIDE
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{
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nsresult rv = BlockAndWaitForStream();
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NS_ENSURE_SUCCESS(rv, rv);
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rv = mStream->Read(aBuffer, aCount, aResult);
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NS_ENSURE_SUCCESS(rv, rv);
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return NS_OK;
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}
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NS_IMETHOD
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ReadSegments(nsWriteSegmentFun aWriter, void* aClosure, uint32_t aCount,
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uint32_t* aResult) MOZ_OVERRIDE
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{
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nsresult rv = BlockAndWaitForStream();
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NS_ENSURE_SUCCESS(rv, rv);
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rv = mStream->ReadSegments(aWriter, aClosure, aCount, aResult);
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NS_ENSURE_SUCCESS(rv, rv);
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return NS_OK;
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}
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NS_IMETHOD
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IsNonBlocking(bool* aNonBlocking) MOZ_OVERRIDE
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{
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NS_ENSURE_ARG_POINTER(aNonBlocking);
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*aNonBlocking = false;
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return NS_OK;
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}
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NS_IMETHOD
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Seek(int32_t aWhence, int64_t aOffset) MOZ_OVERRIDE
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{
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nsresult rv = BlockAndWaitForStream();
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NS_ENSURE_SUCCESS(rv, rv);
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if (!mWeakSeekableStream) {
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NS_WARNING("Underlying blob stream is not seekable!");
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return NS_ERROR_NO_INTERFACE;
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}
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rv = mWeakSeekableStream->Seek(aWhence, aOffset);
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NS_ENSURE_SUCCESS(rv, rv);
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return NS_OK;
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}
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NS_IMETHOD
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Tell(int64_t* aResult)
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{
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// We can cheat here and assume that we're going to start at 0 if we don't
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// yet have our stream. Though, really, this should abort since most input
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// streams could block here.
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if (NS_IsMainThread() && !mStream) {
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*aResult = 0;
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return NS_OK;
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}
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nsresult rv = BlockAndWaitForStream();
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NS_ENSURE_SUCCESS(rv, rv);
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if (!mWeakSeekableStream) {
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NS_WARNING("Underlying blob stream is not seekable!");
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return NS_ERROR_NO_INTERFACE;
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}
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rv = mWeakSeekableStream->Tell(aResult);
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NS_ENSURE_SUCCESS(rv, rv);
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return NS_OK;
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}
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NS_IMETHOD
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SetEOF()
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{
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nsresult rv = BlockAndWaitForStream();
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NS_ENSURE_SUCCESS(rv, rv);
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if (!mWeakSeekableStream) {
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NS_WARNING("Underlying blob stream is not seekable!");
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return NS_ERROR_NO_INTERFACE;
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}
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rv = mWeakSeekableStream->SetEOF();
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NS_ENSURE_SUCCESS(rv, rv);
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return NS_OK;
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}
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virtual nsIInputStream*
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BlockAndGetInternalStream()
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{
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MOZ_ASSERT(!NS_IsMainThread());
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nsresult rv = BlockAndWaitForStream();
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NS_ENSURE_SUCCESS(rv, nullptr);
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return mStream;
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}
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private:
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virtual ~RemoteInputStream()
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{
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if (!NS_IsMainThread()) {
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mStream = nullptr;
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mWeakSeekableStream = nullptr;
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ProxyReleaseToMainThread(mSourceBlob);
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}
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}
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void
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ReallyBlockAndWaitForStream()
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{
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mozilla::DebugOnly<bool> waited;
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{
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mozilla::MonitorAutoLock lock(mMonitor);
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waited = !mStream;
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while (!mStream) {
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mMonitor.Wait();
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}
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}
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MOZ_ASSERT(mStream);
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#ifdef DEBUG
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if (waited && mWeakSeekableStream) {
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int64_t position;
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MOZ_ASSERT(NS_SUCCEEDED(mWeakSeekableStream->Tell(&position)),
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"Failed to determine initial stream position!");
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MOZ_ASSERT(!position, "Stream not starting at 0!");
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}
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#endif
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}
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nsresult
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BlockAndWaitForStream()
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{
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if (NS_IsMainThread()) {
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NS_WARNING("Blocking the main thread is not supported!");
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return NS_ERROR_FAILURE;
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}
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ReallyBlockAndWaitForStream();
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return NS_OK;
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}
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bool
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IsSeekableStream()
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{
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if (NS_IsMainThread()) {
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if (!mStream) {
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NS_WARNING("Don't know if this stream is seekable yet!");
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return true;
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}
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}
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else {
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ReallyBlockAndWaitForStream();
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}
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return !!mWeakSeekableStream;
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}
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};
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NS_IMPL_ADDREF(RemoteInputStream)
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NS_IMPL_RELEASE(RemoteInputStream)
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NS_INTERFACE_MAP_BEGIN(RemoteInputStream)
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NS_INTERFACE_MAP_ENTRY(nsIInputStream)
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NS_INTERFACE_MAP_ENTRY(nsIIPCSerializableInputStream)
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NS_INTERFACE_MAP_ENTRY_CONDITIONAL(nsISeekableStream, IsSeekableStream())
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NS_INTERFACE_MAP_ENTRY_AMBIGUOUS(nsISupports, nsIInputStream)
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NS_INTERFACE_MAP_ENTRY(IPrivateRemoteInputStream)
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NS_INTERFACE_MAP_END
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template <ActorFlavorEnum ActorFlavor>
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class InputStreamActor : public BlobTraits<ActorFlavor>::StreamType
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{
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nsRefPtr<RemoteInputStream> mRemoteStream;
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public:
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InputStreamActor(RemoteInputStream* aRemoteStream)
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: mRemoteStream(aRemoteStream)
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{
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MOZ_ASSERT(NS_IsMainThread());
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MOZ_ASSERT(aRemoteStream);
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}
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InputStreamActor()
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{
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MOZ_ASSERT(NS_IsMainThread());
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}
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private:
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// This method is only called by the IPDL message machinery.
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virtual bool
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Recv__delete__(const InputStreamParams& aParams) MOZ_OVERRIDE
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{
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MOZ_ASSERT(NS_IsMainThread());
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MOZ_ASSERT(mRemoteStream);
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nsCOMPtr<nsIInputStream> stream = DeserializeInputStream(aParams);
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if (!stream) {
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return false;
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}
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mRemoteStream->SetStream(stream);
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return true;
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}
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};
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template <ActorFlavorEnum ActorFlavor>
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inline
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already_AddRefed<nsIDOMBlob>
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GetBlobFromParams(const SlicedBlobConstructorParams& aParams)
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{
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static_assert(ActorFlavor == Parent,
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"No other flavor is supported here!");
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BlobParent* actor =
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const_cast<BlobParent*>(
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static_cast<const BlobParent*>(aParams.sourceParent()));
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MOZ_ASSERT(actor);
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return actor->GetBlob();
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}
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template <>
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inline
|
|
already_AddRefed<nsIDOMBlob>
|
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GetBlobFromParams<Child>(const SlicedBlobConstructorParams& aParams)
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{
|
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BlobChild* actor =
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const_cast<BlobChild*>(
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static_cast<const BlobChild*>(aParams.sourceChild()));
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MOZ_ASSERT(actor);
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return actor->GetBlob();
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}
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|
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inline
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void
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SetBlobOnParams(BlobChild* aActor, SlicedBlobConstructorParams& aParams)
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{
|
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aParams.sourceChild() = aActor;
|
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}
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|
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inline
|
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void
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SetBlobOnParams(BlobParent* aActor, SlicedBlobConstructorParams& aParams)
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{
|
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aParams.sourceParent() = aActor;
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}
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|
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inline
|
|
nsDOMFileBase*
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|
ToConcreteBlob(nsIDOMBlob* aBlob)
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|
{
|
|
// 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.
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|
return static_cast<nsDOMFileBase*>(aBlob);
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}
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|
|
} // anonymous namespace
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|
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namespace mozilla {
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namespace dom {
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|
namespace ipc {
|
|
|
|
// Each instance of this class will be dispatched to the network stream thread
|
|
// pool to run the first time where it will open the file input stream. It will
|
|
// then dispatch itself back to the main thread to send the child process its
|
|
// response (assuming that the child has not crashed). The runnable will then
|
|
// dispatch itself to the thread pool again in order to close the file input
|
|
// stream.
|
|
class BlobTraits<Parent>::BaseType::OpenStreamRunnable : public nsRunnable
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|
{
|
|
friend class nsRevocableEventPtr<OpenStreamRunnable>;
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|
|
typedef BlobTraits<Parent> TraitsType;
|
|
typedef TraitsType::BaseType BlobActorType;
|
|
typedef TraitsType::StreamType BlobStreamProtocolType;
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|
|
|
// Only safe to access these pointers if mRevoked is false!
|
|
BlobActorType* mBlobActor;
|
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BlobStreamProtocolType* mStreamActor;
|
|
|
|
nsCOMPtr<nsIInputStream> mStream;
|
|
nsCOMPtr<nsIIPCSerializableInputStream> mSerializable;
|
|
nsCOMPtr<nsIEventTarget> mTarget;
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|
|
|
bool mRevoked;
|
|
bool mClosing;
|
|
|
|
public:
|
|
OpenStreamRunnable(BlobActorType* aBlobActor,
|
|
BlobStreamProtocolType* aStreamActor,
|
|
nsIInputStream* aStream,
|
|
nsIIPCSerializableInputStream* aSerializable,
|
|
nsIEventTarget* aTarget)
|
|
: mBlobActor(aBlobActor), mStreamActor(aStreamActor), mStream(aStream),
|
|
mSerializable(aSerializable), mTarget(aTarget), mRevoked(false),
|
|
mClosing(false)
|
|
{
|
|
MOZ_ASSERT(NS_IsMainThread());
|
|
MOZ_ASSERT(aBlobActor);
|
|
MOZ_ASSERT(aStreamActor);
|
|
MOZ_ASSERT(aStream);
|
|
// aSerializable may be null.
|
|
MOZ_ASSERT(aTarget);
|
|
}
|
|
|
|
NS_IMETHOD
|
|
Run()
|
|
{
|
|
if (NS_IsMainThread()) {
|
|
return SendResponse();
|
|
}
|
|
|
|
if (!mClosing) {
|
|
return OpenStream();
|
|
}
|
|
|
|
return CloseStream();
|
|
}
|
|
|
|
nsresult
|
|
Dispatch()
|
|
{
|
|
MOZ_ASSERT(NS_IsMainThread());
|
|
MOZ_ASSERT(mTarget);
|
|
|
|
nsresult rv = mTarget->Dispatch(this, NS_DISPATCH_NORMAL);
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
private:
|
|
void
|
|
Revoke()
|
|
{
|
|
MOZ_ASSERT(NS_IsMainThread());
|
|
#ifdef DEBUG
|
|
mBlobActor = nullptr;
|
|
mStreamActor = nullptr;
|
|
#endif
|
|
mRevoked = true;
|
|
}
|
|
|
|
nsresult
|
|
OpenStream()
|
|
{
|
|
MOZ_ASSERT(!NS_IsMainThread());
|
|
MOZ_ASSERT(mStream);
|
|
|
|
if (!mSerializable) {
|
|
nsCOMPtr<IPrivateRemoteInputStream> remoteStream =
|
|
do_QueryInterface(mStream);
|
|
MOZ_ASSERT(remoteStream, "Must QI to IPrivateRemoteInputStream here!");
|
|
|
|
nsCOMPtr<nsIInputStream> realStream =
|
|
remoteStream->BlockAndGetInternalStream();
|
|
NS_ENSURE_TRUE(realStream, NS_ERROR_FAILURE);
|
|
|
|
mSerializable = do_QueryInterface(realStream);
|
|
if (!mSerializable) {
|
|
MOZ_ASSERT(false, "Must be serializable!");
|
|
return NS_ERROR_FAILURE;
|
|
}
|
|
|
|
mStream.swap(realStream);
|
|
}
|
|
|
|
// To force the stream open we call Available(). We don't actually care
|
|
// how much data is available.
|
|
uint64_t available;
|
|
if (NS_FAILED(mStream->Available(&available))) {
|
|
NS_WARNING("Available failed on this stream!");
|
|
}
|
|
|
|
nsresult rv = NS_DispatchToMainThread(this, NS_DISPATCH_NORMAL);
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
nsresult
|
|
CloseStream()
|
|
{
|
|
MOZ_ASSERT(!NS_IsMainThread());
|
|
MOZ_ASSERT(mStream);
|
|
|
|
// Going to always release here.
|
|
nsCOMPtr<nsIInputStream> stream;
|
|
mStream.swap(stream);
|
|
|
|
nsresult rv = stream->Close();
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
nsresult
|
|
SendResponse()
|
|
{
|
|
MOZ_ASSERT(NS_IsMainThread());
|
|
|
|
MOZ_ASSERT(mStream);
|
|
MOZ_ASSERT(mSerializable);
|
|
MOZ_ASSERT(mTarget);
|
|
MOZ_ASSERT(!mClosing);
|
|
|
|
nsCOMPtr<nsIIPCSerializableInputStream> serializable;
|
|
mSerializable.swap(serializable);
|
|
|
|
if (mRevoked) {
|
|
MOZ_ASSERT(!mBlobActor);
|
|
MOZ_ASSERT(!mStreamActor);
|
|
}
|
|
else {
|
|
MOZ_ASSERT(mBlobActor);
|
|
MOZ_ASSERT(mStreamActor);
|
|
|
|
InputStreamParams params;
|
|
serializable->Serialize(params);
|
|
|
|
MOZ_ASSERT(params.type() != InputStreamParams::T__None);
|
|
|
|
unused << mStreamActor->Send__delete__(mStreamActor, params);
|
|
|
|
mBlobActor->NoteRunnableCompleted(this);
|
|
|
|
#ifdef DEBUG
|
|
mBlobActor = nullptr;
|
|
mStreamActor = nullptr;
|
|
#endif
|
|
}
|
|
|
|
mClosing = true;
|
|
|
|
nsCOMPtr<nsIEventTarget> target;
|
|
mTarget.swap(target);
|
|
|
|
nsresult rv = target->Dispatch(this, NS_DISPATCH_NORMAL);
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
|
|
return NS_OK;
|
|
}
|
|
};
|
|
|
|
BlobTraits<Parent>::BaseType::BaseType()
|
|
{
|
|
}
|
|
|
|
BlobTraits<Parent>::BaseType::~BaseType()
|
|
{
|
|
}
|
|
|
|
void
|
|
BlobTraits<Parent>::BaseType::NoteRunnableCompleted(
|
|
BlobTraits<Parent>::BaseType::OpenStreamRunnable* aRunnable)
|
|
{
|
|
MOZ_ASSERT(NS_IsMainThread());
|
|
|
|
for (uint32_t index = 0; index < mOpenStreamRunnables.Length(); index++) {
|
|
nsRevocableEventPtr<BaseType::OpenStreamRunnable>& runnable =
|
|
mOpenStreamRunnables[index];
|
|
|
|
if (runnable.get() == aRunnable) {
|
|
runnable.Forget();
|
|
mOpenStreamRunnables.RemoveElementAt(index);
|
|
return;
|
|
}
|
|
}
|
|
|
|
MOZ_CRASH("Runnable not in our array!");
|
|
}
|
|
|
|
template <ActorFlavorEnum ActorFlavor>
|
|
struct RemoteBlobBase;
|
|
|
|
template <>
|
|
struct RemoteBlobBase<Parent>
|
|
{
|
|
InputStreamParams mInputStreamParams;
|
|
};
|
|
|
|
template <>
|
|
struct RemoteBlobBase<Child>
|
|
{ };
|
|
|
|
template <ActorFlavorEnum ActorFlavor>
|
|
class RemoteBlob : public RemoteBlobBase<ActorFlavor>,
|
|
public nsDOMFile,
|
|
public nsIRemoteBlob
|
|
{
|
|
public:
|
|
typedef RemoteBlob<ActorFlavor> SelfType;
|
|
typedef Blob<ActorFlavor> ActorType;
|
|
typedef InputStreamActor<ActorFlavor> StreamActorType;
|
|
typedef typename ActorType::ConstructorParamsType ConstructorParamsType;
|
|
|
|
private:
|
|
ActorType* mActor;
|
|
|
|
virtual ~RemoteBlob()
|
|
{
|
|
if (mActor) {
|
|
mActor->NoteDyingRemoteBlob();
|
|
}
|
|
}
|
|
|
|
nsresult
|
|
GetInternalStreamViaHelper(nsIInputStream** aStream)
|
|
{
|
|
if (!mActor) {
|
|
return NS_ERROR_UNEXPECTED;
|
|
}
|
|
|
|
nsRefPtr<StreamHelper> helper = new StreamHelper(mActor, this);
|
|
return helper->GetStream(aStream);
|
|
}
|
|
|
|
class StreamHelper : public nsRunnable
|
|
{
|
|
typedef Blob<ActorFlavor> ActorType;
|
|
typedef InputStreamActor<ActorFlavor> StreamActorType;
|
|
|
|
mozilla::Monitor mMonitor;
|
|
ActorType* mActor;
|
|
nsCOMPtr<nsIDOMBlob> mSourceBlob;
|
|
nsRefPtr<RemoteInputStream> mInputStream;
|
|
bool mDone;
|
|
|
|
public:
|
|
StreamHelper(ActorType* aActor, nsIDOMBlob* aSourceBlob)
|
|
: mMonitor("RemoteBlob::StreamHelper::mMonitor"), mActor(aActor),
|
|
mSourceBlob(aSourceBlob), mDone(false)
|
|
{
|
|
// This may be created on any thread.
|
|
MOZ_ASSERT(aActor);
|
|
MOZ_ASSERT(aSourceBlob);
|
|
}
|
|
|
|
nsresult
|
|
GetStream(nsIInputStream** aInputStream)
|
|
{
|
|
// This may be called on any thread.
|
|
MOZ_ASSERT(aInputStream);
|
|
MOZ_ASSERT(mActor);
|
|
MOZ_ASSERT(!mInputStream);
|
|
MOZ_ASSERT(!mDone);
|
|
|
|
if (NS_IsMainThread()) {
|
|
RunInternal(false);
|
|
}
|
|
else {
|
|
nsCOMPtr<nsIThread> mainThread = do_GetMainThread();
|
|
NS_ENSURE_TRUE(mainThread, NS_ERROR_FAILURE);
|
|
|
|
nsresult rv = mainThread->Dispatch(this, NS_DISPATCH_NORMAL);
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
|
|
{
|
|
MonitorAutoLock lock(mMonitor);
|
|
while (!mDone) {
|
|
lock.Wait();
|
|
}
|
|
}
|
|
}
|
|
|
|
MOZ_ASSERT(!mActor);
|
|
MOZ_ASSERT(mDone);
|
|
|
|
if (!mInputStream) {
|
|
return NS_ERROR_UNEXPECTED;
|
|
}
|
|
|
|
mInputStream.forget(aInputStream);
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHOD
|
|
Run()
|
|
{
|
|
MOZ_ASSERT(NS_IsMainThread());
|
|
RunInternal(true);
|
|
return NS_OK;
|
|
}
|
|
|
|
private:
|
|
void
|
|
RunInternal(bool aNotify)
|
|
{
|
|
MOZ_ASSERT(NS_IsMainThread());
|
|
MOZ_ASSERT(mActor);
|
|
MOZ_ASSERT(!mInputStream);
|
|
MOZ_ASSERT(!mDone);
|
|
|
|
nsRefPtr<RemoteInputStream> stream = new RemoteInputStream(mSourceBlob,
|
|
ActorFlavor);
|
|
|
|
StreamActorType* streamActor = new StreamActorType(stream);
|
|
if (mActor->SendPBlobStreamConstructor(streamActor)) {
|
|
stream.swap(mInputStream);
|
|
}
|
|
|
|
mActor = nullptr;
|
|
|
|
if (aNotify) {
|
|
MonitorAutoLock lock(mMonitor);
|
|
mDone = true;
|
|
lock.Notify();
|
|
}
|
|
else {
|
|
mDone = true;
|
|
}
|
|
}
|
|
};
|
|
|
|
class SliceHelper : public nsRunnable
|
|
{
|
|
typedef Blob<ActorFlavor> ActorType;
|
|
|
|
mozilla::Monitor mMonitor;
|
|
ActorType* mActor;
|
|
nsCOMPtr<nsIDOMBlob> mSlice;
|
|
uint64_t mStart;
|
|
uint64_t mLength;
|
|
nsString mContentType;
|
|
bool mDone;
|
|
|
|
public:
|
|
SliceHelper(ActorType* aActor)
|
|
: mMonitor("RemoteBlob::SliceHelper::mMonitor"), mActor(aActor), mStart(0),
|
|
mLength(0), mDone(false)
|
|
{
|
|
// This may be created on any thread.
|
|
MOZ_ASSERT(aActor);
|
|
}
|
|
|
|
nsresult
|
|
GetSlice(uint64_t aStart, uint64_t aLength, const nsAString& aContentType,
|
|
nsIDOMBlob** aSlice)
|
|
{
|
|
// This may be called on any thread.
|
|
MOZ_ASSERT(aSlice);
|
|
MOZ_ASSERT(mActor);
|
|
MOZ_ASSERT(!mSlice);
|
|
MOZ_ASSERT(!mDone);
|
|
|
|
mStart = aStart;
|
|
mLength = aLength;
|
|
mContentType = aContentType;
|
|
|
|
if (NS_IsMainThread()) {
|
|
RunInternal(false);
|
|
}
|
|
else {
|
|
nsCOMPtr<nsIThread> mainThread = do_GetMainThread();
|
|
NS_ENSURE_TRUE(mainThread, NS_ERROR_FAILURE);
|
|
|
|
nsresult rv = mainThread->Dispatch(this, NS_DISPATCH_NORMAL);
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
|
|
{
|
|
MonitorAutoLock lock(mMonitor);
|
|
while (!mDone) {
|
|
lock.Wait();
|
|
}
|
|
}
|
|
}
|
|
|
|
MOZ_ASSERT(!mActor);
|
|
MOZ_ASSERT(mDone);
|
|
|
|
if (!mSlice) {
|
|
return NS_ERROR_UNEXPECTED;
|
|
}
|
|
|
|
mSlice.forget(aSlice);
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHOD
|
|
Run()
|
|
{
|
|
MOZ_ASSERT(NS_IsMainThread());
|
|
RunInternal(true);
|
|
return NS_OK;
|
|
}
|
|
|
|
private:
|
|
void
|
|
RunInternal(bool aNotify)
|
|
{
|
|
MOZ_ASSERT(NS_IsMainThread());
|
|
MOZ_ASSERT(mActor);
|
|
MOZ_ASSERT(!mSlice);
|
|
MOZ_ASSERT(!mDone);
|
|
|
|
NS_ENSURE_TRUE_VOID(mActor->Manager());
|
|
|
|
NormalBlobConstructorParams normalParams;
|
|
normalParams.contentType() = mContentType;
|
|
normalParams.length() = mLength;
|
|
|
|
typename ActorType::ConstructorParamsType params;
|
|
ActorType::BaseType::SetBlobConstructorParams(params, normalParams);
|
|
|
|
ActorType* newActor = ActorType::Create(mActor->Manager(), params);
|
|
MOZ_ASSERT(newActor);
|
|
|
|
SlicedBlobConstructorParams slicedParams;
|
|
slicedParams.contentType() = mContentType;
|
|
slicedParams.begin() = mStart;
|
|
slicedParams.end() = mStart + mLength;
|
|
SetBlobOnParams(mActor, slicedParams);
|
|
|
|
typename ActorType::OtherSideConstructorParamsType otherSideParams;
|
|
ActorType::BaseType::SetBlobConstructorParams(otherSideParams,
|
|
slicedParams);
|
|
|
|
if (mActor->Manager()->SendPBlobConstructor(newActor, otherSideParams)) {
|
|
mSlice = newActor->GetBlob();
|
|
}
|
|
|
|
mActor = nullptr;
|
|
|
|
if (aNotify) {
|
|
MonitorAutoLock lock(mMonitor);
|
|
mDone = true;
|
|
lock.Notify();
|
|
}
|
|
else {
|
|
mDone = true;
|
|
}
|
|
}
|
|
};
|
|
|
|
public:
|
|
NS_DECL_ISUPPORTS_INHERITED
|
|
|
|
RemoteBlob(const nsAString& aName, const nsAString& aContentType,
|
|
uint64_t aLength, uint64_t aModDate)
|
|
: nsDOMFile(aName, aContentType, aLength, aModDate), mActor(nullptr)
|
|
{
|
|
mImmutable = true;
|
|
}
|
|
|
|
RemoteBlob(const nsAString& aContentType, uint64_t aLength)
|
|
: nsDOMFile(aContentType, aLength), mActor(nullptr)
|
|
{
|
|
mImmutable = true;
|
|
}
|
|
|
|
RemoteBlob()
|
|
: nsDOMFile(EmptyString(), EmptyString(), UINT64_MAX, UINT64_MAX)
|
|
, mActor(nullptr)
|
|
{
|
|
mImmutable = true;
|
|
}
|
|
|
|
void
|
|
SetActor(ActorType* aActor)
|
|
{
|
|
MOZ_ASSERT(!aActor || !mActor);
|
|
mActor = aActor;
|
|
}
|
|
|
|
void
|
|
MaybeSetInputStream(const ConstructorParamsType& aParams);
|
|
|
|
virtual already_AddRefed<nsIDOMBlob>
|
|
CreateSlice(uint64_t aStart, uint64_t aLength, const nsAString& aContentType)
|
|
MOZ_OVERRIDE
|
|
{
|
|
if (!mActor) {
|
|
return nullptr;
|
|
}
|
|
|
|
nsRefPtr<SliceHelper> helper = new SliceHelper(mActor);
|
|
|
|
nsCOMPtr<nsIDOMBlob> slice;
|
|
nsresult rv =
|
|
helper->GetSlice(aStart, aLength, aContentType, getter_AddRefs(slice));
|
|
NS_ENSURE_SUCCESS(rv, nullptr);
|
|
|
|
return slice.forget();
|
|
}
|
|
|
|
NS_IMETHOD
|
|
GetInternalStream(nsIInputStream** aStream) MOZ_OVERRIDE;
|
|
|
|
virtual void*
|
|
GetPBlob() MOZ_OVERRIDE
|
|
{
|
|
return static_cast<typename ActorType::ProtocolType*>(mActor);
|
|
}
|
|
|
|
NS_IMETHOD
|
|
GetLastModifiedDate(JSContext* cx,
|
|
JS::MutableHandle<JS::Value> aLastModifiedDate) MOZ_OVERRIDE
|
|
{
|
|
if (IsDateUnknown()) {
|
|
aLastModifiedDate.setNull();
|
|
} else {
|
|
JSObject* date = JS_NewDateObjectMsec(cx, mLastModificationDate);
|
|
if (!date) {
|
|
return NS_ERROR_OUT_OF_MEMORY;
|
|
}
|
|
aLastModifiedDate.setObject(*date);
|
|
}
|
|
return NS_OK;
|
|
}
|
|
};
|
|
|
|
template <>
|
|
void
|
|
RemoteBlob<Parent>::MaybeSetInputStream(const ConstructorParamsType& aParams)
|
|
{
|
|
if (aParams.optionalInputStreamParams().type() ==
|
|
OptionalInputStreamParams::TInputStreamParams) {
|
|
mInputStreamParams =
|
|
aParams.optionalInputStreamParams().get_InputStreamParams();
|
|
}
|
|
else {
|
|
MOZ_ASSERT(aParams.blobParams().type() ==
|
|
ChildBlobConstructorParams::TMysteryBlobConstructorParams);
|
|
}
|
|
}
|
|
|
|
template <>
|
|
void
|
|
RemoteBlob<Child>::MaybeSetInputStream(const ConstructorParamsType& aParams)
|
|
{
|
|
// Nothing needed on the child side!
|
|
}
|
|
|
|
template <>
|
|
NS_IMETHODIMP
|
|
RemoteBlob<Parent>::GetInternalStream(nsIInputStream** aStream)
|
|
{
|
|
if (mInputStreamParams.type() != InputStreamParams::T__None) {
|
|
nsCOMPtr<nsIInputStream> realStream =
|
|
DeserializeInputStream(mInputStreamParams);
|
|
if (!realStream) {
|
|
NS_WARNING("Failed to deserialize stream!");
|
|
return NS_ERROR_UNEXPECTED;
|
|
}
|
|
|
|
nsCOMPtr<nsIInputStream> stream =
|
|
new BlobInputStreamTether(realStream, this);
|
|
stream.forget(aStream);
|
|
return NS_OK;
|
|
}
|
|
|
|
return GetInternalStreamViaHelper(aStream);
|
|
}
|
|
|
|
template <>
|
|
NS_IMETHODIMP
|
|
RemoteBlob<Child>::GetInternalStream(nsIInputStream** aStream)
|
|
{
|
|
return GetInternalStreamViaHelper(aStream);
|
|
}
|
|
|
|
template <ActorFlavorEnum ActorFlavor>
|
|
Blob<ActorFlavor>::Blob(ContentManager* aManager, nsIDOMBlob* aBlob)
|
|
: mBlob(aBlob), mRemoteBlob(nullptr), mOwnsBlob(true)
|
|
, mBlobIsFile(false), mManager(aManager)
|
|
{
|
|
MOZ_ASSERT(NS_IsMainThread());
|
|
MOZ_ASSERT(aBlob);
|
|
MOZ_ASSERT(aManager);
|
|
aBlob->AddRef();
|
|
|
|
nsCOMPtr<nsIDOMFile> file = do_QueryInterface(aBlob);
|
|
mBlobIsFile = !!file;
|
|
}
|
|
|
|
template <ActorFlavorEnum ActorFlavor>
|
|
Blob<ActorFlavor>::Blob(ContentManager* aManager,
|
|
const ConstructorParamsType& aParams)
|
|
: mBlob(nullptr), mRemoteBlob(nullptr), mOwnsBlob(false)
|
|
, mBlobIsFile(false), mManager(aManager)
|
|
{
|
|
MOZ_ASSERT(NS_IsMainThread());
|
|
MOZ_ASSERT(aManager);
|
|
|
|
ChildBlobConstructorParams::Type paramType =
|
|
BaseType::GetBlobConstructorParams(aParams).type();
|
|
|
|
mBlobIsFile =
|
|
paramType == ChildBlobConstructorParams::TFileBlobConstructorParams ||
|
|
paramType == ChildBlobConstructorParams::TMysteryBlobConstructorParams;
|
|
|
|
nsRefPtr<RemoteBlobType> remoteBlob = CreateRemoteBlob(aParams);
|
|
MOZ_ASSERT(remoteBlob);
|
|
|
|
remoteBlob->SetActor(this);
|
|
remoteBlob->MaybeSetInputStream(aParams);
|
|
remoteBlob.forget(&mRemoteBlob);
|
|
|
|
mBlob = mRemoteBlob;
|
|
mOwnsBlob = true;
|
|
}
|
|
|
|
template <ActorFlavorEnum ActorFlavor>
|
|
Blob<ActorFlavor>*
|
|
Blob<ActorFlavor>::Create(ContentManager* aManager,
|
|
const ConstructorParamsType& aParams)
|
|
{
|
|
MOZ_ASSERT(NS_IsMainThread());
|
|
|
|
const ChildBlobConstructorParams& blobParams =
|
|
BaseType::GetBlobConstructorParams(aParams);
|
|
|
|
switch (blobParams.type()) {
|
|
case ChildBlobConstructorParams::TNormalBlobConstructorParams:
|
|
case ChildBlobConstructorParams::TFileBlobConstructorParams:
|
|
case ChildBlobConstructorParams::TMysteryBlobConstructorParams:
|
|
return new Blob<ActorFlavor>(aManager, aParams);
|
|
|
|
case ChildBlobConstructorParams::TSlicedBlobConstructorParams: {
|
|
const SlicedBlobConstructorParams& params =
|
|
blobParams.get_SlicedBlobConstructorParams();
|
|
|
|
nsCOMPtr<nsIDOMBlob> source = GetBlobFromParams<ActorFlavor>(params);
|
|
MOZ_ASSERT(source);
|
|
|
|
nsCOMPtr<nsIDOMBlob> slice;
|
|
nsresult rv =
|
|
source->Slice(params.begin(), params.end(), params.contentType(), 3,
|
|
getter_AddRefs(slice));
|
|
NS_ENSURE_SUCCESS(rv, nullptr);
|
|
|
|
return new Blob<ActorFlavor>(aManager, slice);
|
|
}
|
|
|
|
default:
|
|
MOZ_CRASH("Unknown params!");
|
|
}
|
|
|
|
return nullptr;
|
|
}
|
|
|
|
template <ActorFlavorEnum ActorFlavor>
|
|
already_AddRefed<nsIDOMBlob>
|
|
Blob<ActorFlavor>::GetBlob()
|
|
{
|
|
MOZ_ASSERT(NS_IsMainThread());
|
|
MOZ_ASSERT(mBlob);
|
|
|
|
nsCOMPtr<nsIDOMBlob> blob;
|
|
|
|
// Remote blobs are held alive until the first call to GetBlob. Thereafter we
|
|
// only hold a weak reference. Normal blobs are held alive until the actor is
|
|
// destroyed.
|
|
if (mRemoteBlob && mOwnsBlob) {
|
|
blob = dont_AddRef(mBlob);
|
|
mOwnsBlob = false;
|
|
}
|
|
else {
|
|
blob = mBlob;
|
|
}
|
|
|
|
MOZ_ASSERT(blob);
|
|
|
|
return blob.forget();
|
|
}
|
|
|
|
template <ActorFlavorEnum ActorFlavor>
|
|
bool
|
|
Blob<ActorFlavor>::SetMysteryBlobInfo(const nsString& aName,
|
|
const nsString& aContentType,
|
|
uint64_t aLength,
|
|
uint64_t aLastModifiedDate)
|
|
{
|
|
MOZ_ASSERT(NS_IsMainThread());
|
|
MOZ_ASSERT(mBlob);
|
|
MOZ_ASSERT(mRemoteBlob);
|
|
MOZ_ASSERT(aLastModifiedDate != UINT64_MAX);
|
|
|
|
ToConcreteBlob(mBlob)->SetLazyData(aName, aContentType,
|
|
aLength, aLastModifiedDate);
|
|
|
|
FileBlobConstructorParams params(aName, aContentType,
|
|
aLength, aLastModifiedDate);
|
|
return ProtocolType::SendResolveMystery(params);
|
|
}
|
|
|
|
template <ActorFlavorEnum ActorFlavor>
|
|
bool
|
|
Blob<ActorFlavor>::SetMysteryBlobInfo(const nsString& aContentType,
|
|
uint64_t aLength)
|
|
{
|
|
MOZ_ASSERT(NS_IsMainThread());
|
|
MOZ_ASSERT(mBlob);
|
|
MOZ_ASSERT(mRemoteBlob);
|
|
|
|
nsString voidString;
|
|
voidString.SetIsVoid(true);
|
|
|
|
ToConcreteBlob(mBlob)->SetLazyData(voidString, aContentType,
|
|
aLength, UINT64_MAX);
|
|
|
|
NormalBlobConstructorParams params(aContentType, aLength);
|
|
return ProtocolType::SendResolveMystery(params);
|
|
}
|
|
|
|
template <ActorFlavorEnum ActorFlavor>
|
|
already_AddRefed<typename Blob<ActorFlavor>::RemoteBlobType>
|
|
Blob<ActorFlavor>::CreateRemoteBlob(const ConstructorParamsType& aParams)
|
|
{
|
|
MOZ_ASSERT(NS_IsMainThread());
|
|
|
|
const ChildBlobConstructorParams& blobParams =
|
|
BaseType::GetBlobConstructorParams(aParams);
|
|
|
|
nsRefPtr<RemoteBlobType> remoteBlob;
|
|
|
|
switch (blobParams.type()) {
|
|
case ChildBlobConstructorParams::TNormalBlobConstructorParams: {
|
|
const NormalBlobConstructorParams& params =
|
|
blobParams.get_NormalBlobConstructorParams();
|
|
remoteBlob = new RemoteBlobType(params.contentType(), params.length());
|
|
break;
|
|
}
|
|
|
|
case ChildBlobConstructorParams::TFileBlobConstructorParams: {
|
|
const FileBlobConstructorParams& params =
|
|
blobParams.get_FileBlobConstructorParams();
|
|
remoteBlob =
|
|
new RemoteBlobType(params.name(), params.contentType(),
|
|
params.length(), params.modDate());
|
|
break;
|
|
}
|
|
|
|
case ChildBlobConstructorParams::TMysteryBlobConstructorParams: {
|
|
remoteBlob = new RemoteBlobType();
|
|
break;
|
|
}
|
|
|
|
default:
|
|
MOZ_CRASH("Unknown params!");
|
|
}
|
|
|
|
MOZ_ASSERT(remoteBlob);
|
|
|
|
if (NS_FAILED(remoteBlob->SetMutable(false))) {
|
|
MOZ_CRASH("Failed to make remote blob immutable!");
|
|
}
|
|
|
|
return remoteBlob.forget();
|
|
}
|
|
|
|
template <ActorFlavorEnum ActorFlavor>
|
|
void
|
|
Blob<ActorFlavor>::NoteDyingRemoteBlob()
|
|
{
|
|
MOZ_ASSERT(mBlob);
|
|
MOZ_ASSERT(mRemoteBlob);
|
|
MOZ_ASSERT(!mOwnsBlob);
|
|
|
|
// This may be called on any thread due to the fact that RemoteBlob is
|
|
// designed to be passed between threads. We must start the shutdown process
|
|
// on the main thread, so we proxy here if necessary.
|
|
if (!NS_IsMainThread()) {
|
|
nsCOMPtr<nsIRunnable> runnable =
|
|
NS_NewNonOwningRunnableMethod(this,
|
|
&Blob<ActorFlavor>::NoteDyingRemoteBlob);
|
|
if (NS_FAILED(NS_DispatchToMainThread(runnable))) {
|
|
MOZ_ASSERT(false, "Should never fail!");
|
|
}
|
|
|
|
return;
|
|
}
|
|
|
|
// Must do this before calling Send__delete__ or we'll crash there trying to
|
|
// access a dangling pointer.
|
|
mBlob = nullptr;
|
|
mRemoteBlob = nullptr;
|
|
|
|
mozilla::unused << ProtocolType::Send__delete__(this);
|
|
}
|
|
|
|
template <ActorFlavorEnum ActorFlavor>
|
|
void
|
|
Blob<ActorFlavor>::ActorDestroy(ActorDestroyReason aWhy)
|
|
{
|
|
MOZ_ASSERT(NS_IsMainThread());
|
|
|
|
if (mRemoteBlob) {
|
|
mRemoteBlob->SetActor(nullptr);
|
|
}
|
|
|
|
if (mBlob && mOwnsBlob) {
|
|
mBlob->Release();
|
|
}
|
|
|
|
mManager = nullptr;
|
|
}
|
|
|
|
template <ActorFlavorEnum ActorFlavor>
|
|
bool
|
|
Blob<ActorFlavor>::RecvResolveMystery(const ResolveMysteryParams& aParams)
|
|
{
|
|
MOZ_ASSERT(NS_IsMainThread());
|
|
MOZ_ASSERT(mBlob);
|
|
MOZ_ASSERT(!mRemoteBlob);
|
|
MOZ_ASSERT(mOwnsBlob);
|
|
|
|
if (!mBlobIsFile) {
|
|
MOZ_ASSERT(false, "Must always be a file!");
|
|
return false;
|
|
}
|
|
|
|
nsDOMFileBase* blob = ToConcreteBlob(mBlob);
|
|
|
|
switch (aParams.type()) {
|
|
case ResolveMysteryParams::TNormalBlobConstructorParams: {
|
|
const NormalBlobConstructorParams& params =
|
|
aParams.get_NormalBlobConstructorParams();
|
|
nsString voidString;
|
|
voidString.SetIsVoid(true);
|
|
blob->SetLazyData(voidString, params.contentType(),
|
|
params.length(), UINT64_MAX);
|
|
break;
|
|
}
|
|
|
|
case ResolveMysteryParams::TFileBlobConstructorParams: {
|
|
const FileBlobConstructorParams& params =
|
|
aParams.get_FileBlobConstructorParams();
|
|
blob->SetLazyData(params.name(), params.contentType(),
|
|
params.length(), params.modDate());
|
|
break;
|
|
}
|
|
|
|
default:
|
|
MOZ_CRASH("Unknown params!");
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
template <>
|
|
bool
|
|
Blob<Parent>::RecvPBlobStreamConstructor(StreamType* aActor)
|
|
{
|
|
MOZ_ASSERT(NS_IsMainThread());
|
|
MOZ_ASSERT(mBlob);
|
|
MOZ_ASSERT(!mRemoteBlob);
|
|
|
|
nsCOMPtr<nsIInputStream> stream;
|
|
nsresult rv = mBlob->GetInternalStream(getter_AddRefs(stream));
|
|
NS_ENSURE_SUCCESS(rv, false);
|
|
|
|
nsCOMPtr<nsIRemoteBlob> remoteBlob = do_QueryInterface(mBlob);
|
|
|
|
nsCOMPtr<IPrivateRemoteInputStream> remoteStream;
|
|
if (remoteBlob) {
|
|
remoteStream = do_QueryInterface(stream);
|
|
}
|
|
|
|
// There are three cases in which we can use the stream obtained from the blob
|
|
// directly as our serialized stream:
|
|
//
|
|
// 1. The blob is not a remote blob.
|
|
// 2. The blob is a remote blob that represents this actor.
|
|
// 3. The blob is a remote blob representing a different actor but we
|
|
// already have a non-remote, i.e. serialized, serialized stream.
|
|
//
|
|
// In all other cases we need to be on a background thread before we can get
|
|
// to the real stream.
|
|
nsCOMPtr<nsIIPCSerializableInputStream> serializableStream;
|
|
if (!remoteBlob ||
|
|
static_cast<ProtocolType*>(remoteBlob->GetPBlob()) == this ||
|
|
!remoteStream) {
|
|
serializableStream = do_QueryInterface(stream);
|
|
if (!serializableStream) {
|
|
MOZ_ASSERT(false, "Must be serializable!");
|
|
return false;
|
|
}
|
|
}
|
|
|
|
nsCOMPtr<nsIEventTarget> target =
|
|
do_GetService(NS_STREAMTRANSPORTSERVICE_CONTRACTID);
|
|
NS_ENSURE_TRUE(target, false);
|
|
|
|
nsRefPtr<BaseType::OpenStreamRunnable> runnable =
|
|
new BaseType::OpenStreamRunnable(this, aActor, stream, serializableStream,
|
|
target);
|
|
|
|
rv = runnable->Dispatch();
|
|
NS_ENSURE_SUCCESS(rv, false);
|
|
|
|
nsRevocableEventPtr<BaseType::OpenStreamRunnable>* arrayMember =
|
|
mOpenStreamRunnables.AppendElement();
|
|
*arrayMember = runnable;
|
|
return true;
|
|
}
|
|
|
|
template <>
|
|
bool
|
|
Blob<Child>::RecvPBlobStreamConstructor(StreamType* aActor)
|
|
{
|
|
MOZ_ASSERT(NS_IsMainThread());
|
|
MOZ_ASSERT(mBlob);
|
|
MOZ_ASSERT(!mRemoteBlob);
|
|
|
|
nsCOMPtr<nsIInputStream> stream;
|
|
nsresult rv = mBlob->GetInternalStream(getter_AddRefs(stream));
|
|
NS_ENSURE_SUCCESS(rv, false);
|
|
|
|
nsCOMPtr<nsIIPCSerializableInputStream> serializable =
|
|
do_QueryInterface(stream);
|
|
if (!serializable) {
|
|
MOZ_ASSERT(false, "Must be serializable!");
|
|
return false;
|
|
}
|
|
|
|
InputStreamParams params;
|
|
serializable->Serialize(params);
|
|
|
|
MOZ_ASSERT(params.type() != InputStreamParams::T__None);
|
|
|
|
return aActor->Send__delete__(aActor, params);
|
|
}
|
|
|
|
BlobTraits<Parent>::StreamType*
|
|
BlobTraits<Parent>::BaseType::AllocPBlobStreamParent()
|
|
{
|
|
MOZ_ASSERT(NS_IsMainThread());
|
|
return new InputStreamActor<Parent>();
|
|
}
|
|
|
|
BlobTraits<Child>::StreamType*
|
|
BlobTraits<Child>::BaseType::AllocPBlobStreamChild()
|
|
{
|
|
MOZ_ASSERT(NS_IsMainThread());
|
|
return new InputStreamActor<Child>();
|
|
}
|
|
|
|
bool
|
|
BlobTraits<Parent>::BaseType::DeallocPBlobStreamParent(BlobTraits<Parent>::StreamType* aActor)
|
|
{
|
|
MOZ_ASSERT(NS_IsMainThread());
|
|
delete aActor;
|
|
return true;
|
|
}
|
|
|
|
bool
|
|
BlobTraits<Child>::BaseType::DeallocPBlobStreamChild(BlobTraits<Child>::StreamType* aActor)
|
|
{
|
|
MOZ_ASSERT(NS_IsMainThread());
|
|
delete aActor;
|
|
return true;
|
|
}
|
|
|
|
template <ActorFlavorEnum ActorFlavor>
|
|
NS_IMPL_ADDREF_INHERITED(RemoteBlob<ActorFlavor>, nsDOMFile)
|
|
|
|
template <ActorFlavorEnum ActorFlavor>
|
|
NS_IMPL_RELEASE_INHERITED(RemoteBlob<ActorFlavor>, nsDOMFile)
|
|
|
|
template <ActorFlavorEnum ActorFlavor>
|
|
NS_IMPL_QUERY_INTERFACE_INHERITED1(RemoteBlob<ActorFlavor>, nsDOMFile,
|
|
nsIRemoteBlob)
|
|
|
|
// Explicit instantiation of both classes.
|
|
template class Blob<Parent>;
|
|
template class Blob<Child>;
|
|
|
|
} // namespace ipc
|
|
} // namespace dom
|
|
} // namespace mozilla
|