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/*
* Copyright (C) 2016 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 "MockCDMFactory.h"
#if ENABLE(ENCRYPTED_MEDIA)
#include "InitDataRegistry.h"
#include "ParsedContentType.h"
#include "SharedBuffer.h"
#include <JavaScriptCore/ArrayBuffer.h>
#include <algorithm>
#include <wtf/NeverDestroyed.h>
#include <wtf/TZoneMallocInlines.h>
#include <wtf/UUID.h>
#include <wtf/WeakHashSet.h>
#include <wtf/text/StringHash.h>
#include <wtf/text/StringView.h>
namespace WebCore {
WTF_MAKE_TZONE_ALLOCATED_IMPL(MockCDM);
static WeakHashSet<MockCDMFactory>& allMockFactories()
{
static NeverDestroyed<WeakHashSet<MockCDMFactory>> factories;
return factories;
}
void MockCDMFactory::unregisterAllMockFactories()
{
for (auto& weakFactory : copyToVector(allMockFactories())) {
if (RefPtr factory = weakFactory.get())
factory->unregister();
}
}
MockCDMFactory::MockCDMFactory()
: m_supportedSessionTypes({ MediaKeySessionType::Temporary, MediaKeySessionType::PersistentUsageRecord, MediaKeySessionType::PersistentLicense })
, m_supportedEncryptionSchemes({ MediaKeyEncryptionScheme::cenc })
{
CDMFactory::registerFactory(*this);
allMockFactories().add(*this);
}
MockCDMFactory::~MockCDMFactory()
{
unregister();
allMockFactories().remove(*this);
}
void MockCDMFactory::unregister()
{
if (m_registered) {
CDMFactory::unregisterFactory(*this);
m_registered = false;
}
}
bool MockCDMFactory::supportsKeySystem(const String& keySystem)
{
return keySystem == "org.webkit.mock"_s;
}
bool MockCDMFactory::hasSessionWithID(const String& id)
{
if (id.isEmpty())
return false;
return m_sessions.contains(id);
}
void MockCDMFactory::removeSessionWithID(const String& id)
{
if (id.isEmpty())
return;
m_sessions.remove(id);
m_sessionTypes.remove(id);
}
void MockCDMFactory::addKeysToSessionWithID(const String& id, Vector<Ref<SharedBuffer>>&& keys)
{
if (id.isEmpty())
return;
auto addResult = m_sessions.add(id, WTF::move(keys));
if (addResult.isNewEntry)
return;
auto& value = addResult.iterator->value;
for (auto& key : keys)
value.append(WTF::move(key));
}
Vector<Ref<SharedBuffer>> MockCDMFactory::removeKeysFromSessionWithID(const String& id)
{
if (id.isEmpty())
return { };
auto it = m_sessions.find(id);
if (it == m_sessions.end())
return { };
return WTF::move(it->value);
}
const Vector<Ref<SharedBuffer>>* MockCDMFactory::keysForSessionWithID(const String& id) const
{
if (id.isEmpty())
return { };
auto it = m_sessions.find(id);
if (it == m_sessions.end())
return nullptr;
return &it->value;
}
size_t MockCDMFactory::keyCountForSession(const String& id) const
{
if (id.isEmpty())
return 0;
auto it = m_sessions.find(id);
if (it == m_sessions.end())
return 0;
return it->value.size();
}
std::optional<CDMSessionType> MockCDMFactory::sessionType(const String& id) const
{
if (id.isEmpty())
return std::nullopt;
auto it = m_sessionTypes.find(id);
if (it == m_sessionTypes.end())
return std::nullopt;
return it->value;
}
void MockCDMFactory::setSupportedDataTypes(Vector<String>&& types)
{
m_supportedDataTypes.clear();
for (auto& type : types)
m_supportedDataTypes.append(type);
}
std::unique_ptr<CDMPrivate> MockCDMFactory::createCDM(const String&, const String& mediaKeysHashSalt, const CDMPrivateClient&)
{
return makeUnique<MockCDM>(*this, mediaKeysHashSalt);
}
MockCDM::MockCDM(WeakPtr<MockCDMFactory> factory, const String& mediaKeysHashSalt)
: m_factory(WTF::move(factory))
, m_mediaKeysHashSalt { mediaKeysHashSalt }
{
}
Vector<String> MockCDM::supportedInitDataTypes() const
{
if (RefPtr factory = this->factory())
return factory->supportedDataTypes();
return { };
}
Vector<String> MockCDM::supportedRobustnesses() const
{
if (RefPtr factory = this->factory())
return factory->supportedRobustness();
return { };
}
bool MockCDM::supportsConfiguration(const MediaKeySystemConfiguration& configuration) const
{
RefPtr factory = this->factory();
if (!factory)
return false;
auto capabilityHasSupportedEncryptionScheme = [factory = factory.releaseNonNull()] (auto& capability) {
if (capability.encryptionScheme)
return factory->supportedEncryptionSchemes().contains(capability.encryptionScheme.value());
return true;
};
if (!configuration.audioCapabilities.isEmpty() && std::ranges::none_of(configuration.audioCapabilities, capabilityHasSupportedEncryptionScheme))
return false;
if (!configuration.videoCapabilities.isEmpty() && std::ranges::none_of(configuration.videoCapabilities, capabilityHasSupportedEncryptionScheme))
return false;
return true;
}
bool MockCDM::supportsConfigurationWithRestrictions(const MediaKeySystemConfiguration& configuration, const MediaKeysRestrictions&) const
{
RefPtr factory = this->factory();
if (!factory)
return true;
const auto& unsupportedVideoCodecs = factory->unsupportedVideoCodecs();
if (unsupportedVideoCodecs.isEmpty())
return true;
for (const auto& capability : configuration.videoCapabilities) {
auto contentType = ParsedContentType::create(capability.contentType);
if (!contentType)
continue;
auto codecs = contentType->parameterValueForName("codecs"_s);
if (!codecs.isEmpty() && unsupportedVideoCodecs.contains(codecs))
return false;
}
return true;
}
bool MockCDM::supportsSessionTypeWithConfiguration(const MediaKeySessionType& sessionType, const MediaKeySystemConfiguration&) const
{
if (RefPtr factory = this->factory(); !factory || !factory->supportedSessionTypes().contains(sessionType))
return false;
// NOTE: Implement configuration checking;
return true;
}
MediaKeysRequirement MockCDM::distinctiveIdentifiersRequirement(const MediaKeySystemConfiguration&, const MediaKeysRestrictions&) const
{
if (RefPtr factory = this->factory())
return factory->distinctiveIdentifiersRequirement();
return MediaKeysRequirement::Optional;
}
MediaKeysRequirement MockCDM::persistentStateRequirement(const MediaKeySystemConfiguration&, const MediaKeysRestrictions&) const
{
if (RefPtr factory = this->factory())
return factory->persistentStateRequirement();
return MediaKeysRequirement::Optional;
}
bool MockCDM::distinctiveIdentifiersAreUniquePerOriginAndClearable(const MediaKeySystemConfiguration&) const
{
// NOTE: Implement;
return true;
}
RefPtr<CDMInstance> MockCDM::createInstance()
{
if (RefPtr factory = this->factory(); factory && factory->canCreateInstances())
return MockCDMInstance::create(*this);
return nullptr;
}
void MockCDM::loadAndInitialize()
{
// No-op.
}
bool MockCDM::supportsServerCertificates() const
{
if (RefPtr factory = this->factory())
return factory->supportsServerCertificates();
return false;
}
bool MockCDM::supportsSessions() const
{
if (RefPtr factory = this->factory())
return factory->supportsSessions();
return false;
}
bool MockCDM::supportsInitData(const String& initDataType, const SharedBuffer& initData) const
{
if (!supportedInitDataTypes().contains(initDataType))
return false;
UNUSED_PARAM(initData);
return true;
}
RefPtr<SharedBuffer> MockCDM::sanitizeResponse(const SharedBuffer& response) const
{
auto contiguousResponse = response.makeContiguous();
if (!charactersAreAllASCII(contiguousResponse->span()))
return nullptr;
for (auto word : StringView(byteCast<Latin1Character>(contiguousResponse->span())).split(' ')) {
if (word == "valid-response"_s)
return contiguousResponse;
}
return nullptr;
}
std::optional<String> MockCDM::sanitizeSessionId(const String& sessionId) const
{
if (equalLettersIgnoringASCIICase(sessionId, "valid-loaded-session"_s))
return sessionId;
// Accept session IDs currently tracked by the factory so tests can round-trip
// (e.g. close a persistent-license session, then load() it again by the same ID).
if (RefPtr factory = this->factory(); factory && factory->hasSessionWithID(sessionId))
return sessionId;
return std::nullopt;
}
Ref<MockCDMInstance> MockCDMInstance::create(MockCDM& cdm)
{
return adoptRef(*new MockCDMInstance(cdm));
}
MockCDMInstance::MockCDMInstance(MockCDM& cdm)
: m_cdm(cdm)
{
}
void MockCDMInstance::initializeWithConfiguration(const MediaKeySystemConfiguration& configuration, AllowDistinctiveIdentifiers distinctiveIdentifiers, AllowPersistentState persistentState, SuccessCallback&& callback)
{
auto initialize = [&, this, protectedThis = Ref { *this }] {
CheckedPtr cdm = m_cdm.get();
if (!cdm || !cdm->supportsConfiguration(configuration))
return CDMInstanceSuccessValue::Failed;
RefPtr factory = cdm->factory();
if (!factory)
return CDMInstanceSuccessValue::Failed;
bool distinctiveIdentifiersAllowed = (distinctiveIdentifiers == AllowDistinctiveIdentifiers::Yes);
if (m_distinctiveIdentifiersAllowed != distinctiveIdentifiersAllowed) {
if (!distinctiveIdentifiersAllowed && factory->distinctiveIdentifiersRequirement() == MediaKeysRequirement::Required)
return CDMInstanceSuccessValue::Failed;
m_distinctiveIdentifiersAllowed = distinctiveIdentifiersAllowed;
}
bool persistentStateAllowed = (persistentState == AllowPersistentState::Yes);
if (m_persistentStateAllowed != persistentStateAllowed) {
if (!persistentStateAllowed && factory->persistentStateRequirement() == MediaKeysRequirement::Required)
return CDMInstanceSuccessValue::Failed;
m_persistentStateAllowed = persistentStateAllowed;
}
return CDMInstanceSuccessValue::Succeeded;
};
callback(initialize());
}