184 lines
5.7 KiB
C++
184 lines
5.7 KiB
C++
/*
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* Copyright (C) 2016 Apple Inc. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS''
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
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* THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
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* THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include "config.h"
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#include "CDM.h"
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#if ENABLE(ENCRYPTED_MEDIA)
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#include "CDMFactory.h"
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#include "CDMPrivate.h"
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#include "Document.h"
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#include "InitDataRegistry.h"
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#include "MediaKeysRequirement.h"
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#include "MediaPlayer.h"
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#include "NotImplemented.h"
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#include "Page.h"
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#include "ParsedContentType.h"
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#include "ScriptExecutionContext.h"
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#include "SecurityOrigin.h"
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#include "SecurityOriginData.h"
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#include "Settings.h"
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#include <wtf/FileSystem.h>
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#include <wtf/Logger.h>
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#include <wtf/LoggerHelper.h>
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#include <wtf/NeverDestroyed.h>
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namespace WebCore {
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bool CDM::supportsKeySystem(const String& keySystem)
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{
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for (auto* factory : CDMFactory::registeredFactories()) {
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if (factory->supportsKeySystem(keySystem))
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return true;
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}
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return false;
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}
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Ref<CDM> CDM::create(Document& document, const String& keySystem)
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{
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return adoptRef(*new CDM(document, keySystem));
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}
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CDM::CDM(Document& document, const String& keySystem)
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: ContextDestructionObserver(&document)
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#if !RELEASE_LOG_DISABLED
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, m_logger(document.logger())
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, m_logIdentifier(LoggerHelper::uniqueLogIdentifier())
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#endif
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, m_keySystem(keySystem)
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{
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ASSERT(supportsKeySystem(keySystem));
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for (auto* factory : CDMFactory::registeredFactories()) {
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if (factory->supportsKeySystem(keySystem)) {
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m_private = factory->createCDM(keySystem);
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#if !RELEASE_LOG_DISABLED
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m_private->setLogger(m_logger, m_logIdentifier);
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#endif
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break;
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}
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}
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}
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CDM::~CDM() = default;
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void CDM::getSupportedConfiguration(MediaKeySystemConfiguration&& candidateConfiguration, SupportedConfigurationCallback&& callback)
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{
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// https://w3c.github.io/encrypted-media/#get-supported-configuration
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// W3C Editor's Draft 09 November 2016
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// Implemented in CDMPrivate::getSupportedConfiguration()
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Document* document = downcast<Document>(m_scriptExecutionContext);
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if (!document || !m_private) {
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callback(std::nullopt);
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return;
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}
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bool isEphemeral = !document->page() || document->page()->sessionID().isEphemeral();
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SecurityOrigin& origin = document->securityOrigin();
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SecurityOrigin& topOrigin = document->topOrigin();
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CDMPrivate::LocalStorageAccess access = !isEphemeral && origin.canAccessLocalStorage(&topOrigin) ? CDMPrivate::LocalStorageAccess::Allowed : CDMPrivate::LocalStorageAccess::NotAllowed;
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m_private->getSupportedConfiguration(WTFMove(candidateConfiguration), access, WTFMove(callback));
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}
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void CDM::loadAndInitialize()
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{
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if (m_private)
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m_private->loadAndInitialize();
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}
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RefPtr<CDMInstance> CDM::createInstance()
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{
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if (!m_private)
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return nullptr;
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auto instance = m_private->createInstance();
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if (instance)
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instance->setStorageDirectory(storageDirectory());
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return instance;
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}
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bool CDM::supportsServerCertificates() const
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{
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return m_private && m_private->supportsServerCertificates();
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}
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bool CDM::supportsSessions() const
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{
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return m_private && m_private->supportsSessions();
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}
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bool CDM::supportsInitDataType(const AtomString& initDataType) const
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{
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return m_private && m_private->supportedInitDataTypes().contains(initDataType);
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}
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RefPtr<SharedBuffer> CDM::sanitizeInitData(const AtomString& initDataType, const SharedBuffer& initData)
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{
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if (!m_private)
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return nullptr;
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return m_private->sanitizeInitData(initDataType, initData);
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}
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bool CDM::supportsInitData(const AtomString& initDataType, const SharedBuffer& initData)
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{
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return m_private && m_private->supportsInitData(initDataType, initData);
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}
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RefPtr<SharedBuffer> CDM::sanitizeResponse(const SharedBuffer& response)
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{
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if (!m_private)
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return nullptr;
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return m_private->sanitizeResponse(response);
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}
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std::optional<String> CDM::sanitizeSessionId(const String& sessionId)
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{
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if (!m_private)
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return std::nullopt;
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return m_private->sanitizeSessionId(sessionId);
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}
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String CDM::storageDirectory() const
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{
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auto* document = downcast<Document>(scriptExecutionContext());
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if (!document)
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return emptyString();
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auto* page = document->page();
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if (!page || page->usesEphemeralSession())
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return emptyString();
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auto storageDirectory = document->settings().mediaKeysStorageDirectory();
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if (storageDirectory.isEmpty())
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return emptyString();
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return FileSystem::pathByAppendingComponent(storageDirectory, document->securityOrigin().data().databaseIdentifier());
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}
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}
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#endif
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