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/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=8 sts=2 et sw=2 tw=80: */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this file,
* You can obtain one at http://mozilla.org/MPL/2.0/. */
#include "mozilla/EMEUtils.h"
#include "jsfriendapi.h"
#include "MediaData.h"
#include "KeySystemConfig.h"
#include "mozilla/StaticPrefs_media.h"
#include "mozilla/dom/Document.h"
#include "mozilla/dom/KeySystemNames.h"
#include "mozilla/dom/UnionTypes.h"
#include "nsContentUtils.h"
#ifdef MOZ_WMF_CDM
# include "mozilla/PMFCDM.h"
#endif
namespace mozilla {
LogModule* GetEMELog() {
static LazyLogModule log("EME");
return log;
}
LogModule* GetEMEVerboseLog() {
static LazyLogModule log("EMEV");
return log;
}
void CopyArrayBufferViewOrArrayBufferData(
const dom::ArrayBufferViewOrArrayBuffer& aBufferOrView,
nsTArray<uint8_t>& aOutData) {
aOutData.Clear();
Unused << dom::AppendTypedArrayDataTo(aBufferOrView, aOutData);
}
bool IsClearkeyKeySystem(const nsAString& aKeySystem) {
if (StaticPrefs::media_clearkey_test_key_systems_enabled()) {
return aKeySystem.EqualsLiteral(kClearKeyKeySystemName) ||
aKeySystem.EqualsLiteral(kClearKeyWithProtectionQueryKeySystemName);
}
return aKeySystem.EqualsLiteral(kClearKeyKeySystemName);
}
bool IsWidevineKeySystem(const nsAString& aKeySystem) {
return aKeySystem.EqualsLiteral(kWidevineKeySystemName);
}
#ifdef MOZ_WMF_CDM
bool IsPlayReadyEnabled() {
// 1=enabled encrypted and clear, 2=enabled encrytped.
return StaticPrefs::media_eme_playready_enabled() &&
(StaticPrefs::media_wmf_media_engine_enabled() == 1 ||
StaticPrefs::media_wmf_media_engine_enabled() == 2);
}
bool IsPlayReadyKeySystemAndSupported(const nsAString& aKeySystem) {
if (!IsPlayReadyEnabled()) {
return false;
}
return aKeySystem.EqualsLiteral(kPlayReadyKeySystemName) ||
aKeySystem.EqualsLiteral(kPlayReadyKeySystemHardware) ||
aKeySystem.EqualsLiteral(kPlayReadyHardwareClearLeadKeySystemName);
}
bool IsWidevineHardwareDecryptionEnabled() {
// 1=enabled encrypted and clear, 2=enabled encrytped.
return StaticPrefs::media_eme_widevine_experiment_enabled() &&
(StaticPrefs::media_wmf_media_engine_enabled() == 1 ||
StaticPrefs::media_wmf_media_engine_enabled() == 2);
}
bool IsWidevineExperimentKeySystemAndSupported(const nsAString& aKeySystem) {
if (!IsWidevineHardwareDecryptionEnabled()) {
return false;
}
return aKeySystem.EqualsLiteral(kWidevineExperimentKeySystemName) ||
aKeySystem.EqualsLiteral(kWidevineExperiment2KeySystemName);
}
bool IsWMFClearKeySystemAndSupported(const nsAString& aKeySystem) {
if (!StaticPrefs::media_eme_wmf_clearkey_enabled()) {
return false;
}
// 1=enabled encrypted and clear, 2=enabled encrytped.
if (StaticPrefs::media_wmf_media_engine_enabled() != 1 &&
StaticPrefs::media_wmf_media_engine_enabled() != 2) {
return false;
}
return aKeySystem.EqualsLiteral(kClearKeyKeySystemName);
}
#endif
nsString KeySystemToProxyName(const nsAString& aKeySystem) {
if (IsClearkeyKeySystem(aKeySystem)) {
#ifdef MOZ_WMF_CDM
if (StaticPrefs::media_eme_wmf_clearkey_enabled()) {
return u"mfcdm-clearkey"_ns;
}
#endif
return u"gmp-clearkey"_ns;
}
if (IsWidevineKeySystem(aKeySystem)) {
return u"gmp-widevinecdm"_ns;
}
#ifdef MOZ_WMF_CDM
if (IsPlayReadyKeySystemAndSupported(aKeySystem)) {
return u"mfcdm-playready"_ns;
}
if (IsWidevineExperimentKeySystemAndSupported(aKeySystem)) {
return u"mfcdm-widevine"_ns;
}
#endif
MOZ_ASSERT_UNREACHABLE("Not supported key system!");
return u""_ns;
}
bool IsHardwareDecryptionSupported(
const dom::MediaKeySystemConfiguration& aConfig) {
for (const auto& capabilities : aConfig.mAudioCapabilities) {
if (capabilities.mRobustness.EqualsLiteral("HW_SECURE_ALL")) {
return true;
}
}
for (const auto& capabilities : aConfig.mVideoCapabilities) {
if (capabilities.mRobustness.EqualsLiteral("3000") ||
capabilities.mRobustness.EqualsLiteral("HW_SECURE_ALL") ||
capabilities.mRobustness.EqualsLiteral("HW_SECURE_DECODE")) {
return true;
}
}
return false;
}
bool IsHardwareDecryptionSupported(const KeySystemConfig& aConfig) {
for (const auto& robustness : aConfig.mAudioRobustness) {
if (robustness.EqualsLiteral("HW_SECURE_ALL")) {
return true;
}
}
for (const auto& robustness : aConfig.mVideoRobustness) {
if (robustness.EqualsLiteral("3000") ||
robustness.EqualsLiteral("HW_SECURE_ALL") ||
robustness.EqualsLiteral("HW_SECURE_DECODE")) {
return true;
}
}
return false;
}
const char* EncryptionSchemeStr(const CryptoScheme& aScheme) {
switch (aScheme) {
case CryptoScheme::None:
return "none";
case CryptoScheme::Cenc:
return "cenc";
case CryptoScheme::Cbcs:
return "cbcs";
default:
return "not-defined!";
}
}
#ifdef MOZ_WMF_CDM
void MFCDMCapabilitiesIPDLToKeySystemConfig(
const MFCDMCapabilitiesIPDL& aCDMConfig,
KeySystemConfig& aKeySystemConfig) {
aKeySystemConfig.mKeySystem = aCDMConfig.keySystem();
for (const auto& type : aCDMConfig.initDataTypes()) {
aKeySystemConfig.mInitDataTypes.AppendElement(type);
}
for (const auto& type : aCDMConfig.sessionTypes()) {
aKeySystemConfig.mSessionTypes.AppendElement(type);
}
for (const auto& c : aCDMConfig.videoCapabilities()) {
if (!c.robustness().IsEmpty() &&
!aKeySystemConfig.mVideoRobustness.Contains(c.robustness())) {
aKeySystemConfig.mVideoRobustness.AppendElement(c.robustness());
}
aKeySystemConfig.mMP4.SetCanDecryptAndDecode(
NS_ConvertUTF16toUTF8(c.contentType()));
}
for (const auto& c : aCDMConfig.audioCapabilities()) {
if (!c.robustness().IsEmpty() &&
!aKeySystemConfig.mAudioRobustness.Contains(c.robustness())) {
aKeySystemConfig.mAudioRobustness.AppendElement(c.robustness());
}
aKeySystemConfig.mMP4.SetCanDecryptAndDecode(
NS_ConvertUTF16toUTF8(c.contentType()));
}
aKeySystemConfig.mPersistentState = aCDMConfig.persistentState();
aKeySystemConfig.mDistinctiveIdentifier = aCDMConfig.distinctiveID();
for (const auto& scheme : aCDMConfig.encryptionSchemes()) {
aKeySystemConfig.mEncryptionSchemes.AppendElement(
NS_ConvertUTF8toUTF16(EncryptionSchemeStr(scheme)));
}
aKeySystemConfig.mIsHDCP22Compatible = aCDMConfig.isHDCP22Compatible()
? *aCDMConfig.isHDCP22Compatible()
: false;
EME_LOG("New Capabilities=%s",
NS_ConvertUTF16toUTF8(aKeySystemConfig.GetDebugInfo()).get());
}
#endif
bool DoesKeySystemSupportClearLead(const nsAString& aKeySystem) {
// I believe that Widevine L3 supports clear-lead, but I couldn't find any
// official documentation to prove that. The only one I can find is that Shaka
// player mentions the clear lead feature. So we expect L3 should have that as
// well. But for HWDRM, Widevine L1 and SL3000 needs to rely on special checks
// to know whether clearlead is supported. That will be implemented by
// querying for special key system names.
// https://shaka-project.github.io/shaka-packager/html/documentation.html
#ifdef MOZ_WMF_CDM
if (aKeySystem.EqualsLiteral(kWidevineExperiment2KeySystemName) ||
aKeySystem.EqualsLiteral(kPlayReadyHardwareClearLeadKeySystemName)) {
return true;
}
#endif
return aKeySystem.EqualsLiteral(kWidevineKeySystemName);
}
bool CheckIfHarewareDRMConfigExists(
const nsTArray<dom::MediaKeySystemConfiguration>& aConfigs) {
bool foundHWDRMconfig = false;
for (const auto& config : aConfigs) {
if (IsHardwareDecryptionSupported(config)) {
foundHWDRMconfig = true;
break;
}
}
return foundHWDRMconfig;
}
bool DoesKeySystemSupportHardwareDecryption(const nsAString& aKeySystem) {
#ifdef MOZ_WMF_CDM
if (aKeySystem.EqualsLiteral(kPlayReadyKeySystemHardware) ||
aKeySystem.EqualsLiteral(kPlayReadyHardwareClearLeadKeySystemName) ||
aKeySystem.EqualsLiteral(kWidevineExperimentKeySystemName) ||
aKeySystem.EqualsLiteral(kWidevineExperiment2KeySystemName)) {
return true;
}
#endif
return false;
}
void DeprecationWarningLog(const dom::Document* aDocument,
const char* aMsgName) {
if (!aDocument || !aMsgName) {
return;
}
EME_LOG("DeprecationWarning Logging deprecation warning '%s' to WebConsole.",
aMsgName);
nsTHashMap<nsCharPtrHashKey, bool> warnings;
warnings.InsertOrUpdate(aMsgName, true);
AutoTArray<nsString, 1> params;
nsString& uri = *params.AppendElement();
Unused << aDocument->GetDocumentURI(uri);
nsContentUtils::ReportToConsole(nsIScriptError::warningFlag, "Media"_ns,
aDocument, nsContentUtils::eDOM_PROPERTIES,
aMsgName, params);
}
} // namespace mozilla
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