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/*
* Copyright (C) 2020 Apple Inc. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS''
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
* THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
* THE POSSIBILITY OF SUCH DAMAGE.
*/
#include "config.h"
#include "RemoteLegacyCDMSession.h"
#if ENABLE(GPU_PROCESS) && ENABLE(LEGACY_ENCRYPTED_MEDIA)
#include "GPUProcessConnection.h"
#include "RemoteLegacyCDMFactory.h"
#include "RemoteLegacyCDMSessionProxyMessages.h"
#include <JavaScriptCore/GenericTypedArrayViewInlines.h>
#include <JavaScriptCore/JSGenericTypedArrayViewInlines.h>
#include <JavaScriptCore/TypedArrayType.h>
#include <WebCore/SharedBuffer.h>
namespace WebKit {
using namespace WebCore;
static RefPtr<ArrayBuffer> convertToArrayBuffer(RefPtr<const SharedBuffer>&& buffer)
{
if (buffer)
return buffer->tryCreateArrayBuffer();
return nullptr;
}
static RefPtr<Uint8Array> convertToUint8Array(RefPtr<const SharedBuffer>&& buffer)
{
auto arrayBuffer = convertToArrayBuffer(WTFMove(buffer));
if (!arrayBuffer)
return nullptr;
size_t sizeInBytes = arrayBuffer->byteLength();
return Uint8Array::create(WTFMove(arrayBuffer), 0, sizeInBytes);
}
template <typename T>
static RefPtr<SharedBuffer> convertToSharedBuffer(T array)
{
if (!array)
return nullptr;
return SharedBuffer::create(array->data(), array->byteLength());
}
std::unique_ptr<RemoteLegacyCDMSession> RemoteLegacyCDMSession::create(WeakPtr<RemoteLegacyCDMFactory> factory, RemoteLegacyCDMSessionIdentifier&& identifier, LegacyCDMSessionClient& client)
{
auto session = std::unique_ptr<RemoteLegacyCDMSession>(new RemoteLegacyCDMSession(WTFMove(factory), WTFMove(identifier), client));
if (session->m_factory)
session->m_factory->addSession(identifier, *session);
return session;
}
RemoteLegacyCDMSession::RemoteLegacyCDMSession(WeakPtr<RemoteLegacyCDMFactory> factory, RemoteLegacyCDMSessionIdentifier&& identifier, LegacyCDMSessionClient& client)
: m_factory(WTFMove(factory))
, m_identifier(WTFMove(identifier))
, m_client(client)
{
}
RemoteLegacyCDMSession::~RemoteLegacyCDMSession()
{
if (m_factory)
m_factory->removeSession(m_identifier);
}
RefPtr<Uint8Array> RemoteLegacyCDMSession::generateKeyRequest(const String& mimeType, Uint8Array* initData, String& destinationURL, unsigned short& errorCode, uint32_t& systemCode)
{
if (!m_factory || !initData)
return nullptr;
auto ipcInitData = convertToSharedBuffer(initData);
auto sendResult = m_factory->gpuProcessConnection().connection().sendSync(Messages::RemoteLegacyCDMSessionProxy::GenerateKeyRequest(mimeType, ipcInitData), m_identifier);
RefPtr<SharedBuffer> ipcNextMessage;
if (sendResult.succeeded())
std::tie(ipcNextMessage, destinationURL, errorCode, systemCode) = sendResult.takeReply();
if (!ipcNextMessage)
return nullptr;
return convertToUint8Array(WTFMove(ipcNextMessage));
}
void RemoteLegacyCDMSession::releaseKeys()
{
if (!m_factory)
return;
m_factory->gpuProcessConnection().connection().send(Messages::RemoteLegacyCDMSessionProxy::ReleaseKeys(), m_identifier);
m_cachedKeyCache.clear();
}
bool RemoteLegacyCDMSession::update(Uint8Array* keyData, RefPtr<Uint8Array>& nextMessage, unsigned short& errorCode, uint32_t& systemCode)
{
if (!m_factory || !keyData)
return false;
auto ipcKeyData = convertToSharedBuffer(keyData);
auto sendResult = m_factory->gpuProcessConnection().connection().sendSync(Messages::RemoteLegacyCDMSessionProxy::Update(ipcKeyData), m_identifier);
bool succeeded { false };
RefPtr<SharedBuffer> ipcNextMessage;
if (sendResult.succeeded())
std::tie(succeeded, ipcNextMessage, errorCode, systemCode) = sendResult.takeReply();
if (ipcNextMessage)
nextMessage = convertToUint8Array(WTFMove(ipcNextMessage));
return succeeded;
}
RefPtr<ArrayBuffer> RemoteLegacyCDMSession::cachedKeyForKeyID(const String& keyId) const
{
if (!m_factory)
return nullptr;
auto foundInCache = m_cachedKeyCache.find(keyId);
if (foundInCache != m_cachedKeyCache.end())
return foundInCache->value;
auto sendResult = m_factory->gpuProcessConnection().connection().sendSync(Messages::RemoteLegacyCDMSessionProxy::CachedKeyForKeyID(keyId), m_identifier);
auto [ipcKey] = sendResult.takeReplyOr(nullptr);
if (!ipcKey)
return nullptr;
auto ipcKeyBuffer = convertToArrayBuffer(WTFMove(ipcKey));
m_cachedKeyCache.set(keyId, ipcKeyBuffer);
return ipcKeyBuffer;
}
void RemoteLegacyCDMSession::sendMessage(RefPtr<SharedBuffer>&& message, const String& destinationURL)
{
if (!m_client)
return;
if (!message) {
m_client->sendMessage(nullptr, destinationURL);
return;
}
m_client->sendMessage(convertToUint8Array(WTFMove(message)).get(), destinationURL);
}
void RemoteLegacyCDMSession::sendError(WebCore::LegacyCDMSessionClient::MediaKeyErrorCode errorCode, uint32_t systemCode)
{
if (m_client)
m_client->sendError(errorCode, systemCode);
}
}
#endif
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