/* * 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 "CDM.h" #if ENABLE(ENCRYPTED_MEDIA) #include "CDMFactory.h" #include "CDMPrivate.h" #include "Document.h" #include "FileSystem.h" #include "InitDataRegistry.h" #include "MediaKeysRequirement.h" #include "MediaPlayer.h" #include "NotImplemented.h" #include "Page.h" #include "ParsedContentType.h" #include "ScriptExecutionContext.h" #include "SecurityOrigin.h" #include "SecurityOriginData.h" #include "Settings.h" #include <wtf/NeverDestroyed.h> namespace WebCore { bool CDM::supportsKeySystem(const String& keySystem) { for (auto* factory : CDMFactory::registeredFactories()) { if (factory->supportsKeySystem(keySystem)) return true; } return false; } Ref<CDM> CDM::create(Document& document, const String& keySystem) { return adoptRef(*new CDM(document, keySystem)); } CDM::CDM(Document& document, const String& keySystem) : ContextDestructionObserver(&document) , m_keySystem(keySystem) { ASSERT(supportsKeySystem(keySystem)); for (auto* factory : CDMFactory::registeredFactories()) { if (factory->supportsKeySystem(keySystem)) { m_private = factory->createCDM(keySystem); break; } } } CDM::~CDM() = default; void CDM::getSupportedConfiguration(MediaKeySystemConfiguration&& candidateConfiguration, SupportedConfigurationCallback&& callback) { // https://w3c.github.io/encrypted-media/#get-supported-configuration // W3C Editor's Draft 09 November 2016 // 3.1.1.1 Get Supported Configuration // Given a Key Systems implementation implementation, MediaKeySystemConfiguration candidate configuration, and origin, // this algorithm returns a supported configuration or NotSupported as appropriate. // 1. Let supported configuration be ConsentDenied. // 2. Initialize restrictions to indicate that no configurations have had user consent denied. MediaKeysRestrictions restrictions { }; doSupportedConfigurationStep(WTFMove(candidateConfiguration), WTFMove(restrictions), WTFMove(callback)); } void CDM::doSupportedConfigurationStep(MediaKeySystemConfiguration&& candidateConfiguration, MediaKeysRestrictions&& restrictions, SupportedConfigurationCallback&& callback) { // https://w3c.github.io/encrypted-media/#get-supported-configuration // W3C Editor's Draft 09 November 2016, ctd. // 3.1.1.1 Get Supported Configuration // 3. Repeat the following step while supported configuration is ConsentDenied: // 3.1. Let supported configuration and, if provided, restrictions be the result of executing the // Get Supported Configuration and Consent algorithm with implementation, candidate configuration, // restrictions and origin. auto optionalConfiguration = getSupportedConfiguration(candidateConfiguration, restrictions); if (!optionalConfiguration) { callback(std::nullopt); return; } auto consentCallback = [weakThis = makeWeakPtr(*this), callback = WTFMove(callback)] (ConsentStatus status, MediaKeySystemConfiguration&& configuration, MediaKeysRestrictions&& restrictions) mutable { if (!weakThis) { callback(std::nullopt); return; } // 3.1.1.2 Get Supported Configuration and Consent, ctd. // 22. Let consent status and updated restrictions be the result of running the Get Consent Status algorithm on accumulated configuration, // restrictions and origin and follow the steps for the value of consent status from the following list: switch (status) { case ConsentStatus::ConsentDenied: // ↳ ConsentDenied: // Return ConsentDenied and updated restrictions. weakThis->doSupportedConfigurationStep(WTFMove(configuration), WTFMove(restrictions), WTFMove(callback)); return; case ConsentStatus::InformUser: // ↳ InformUser // Inform the user that accumulated configuration is in use in the origin including, specifically, the information that // Distinctive Identifier(s) and/or Distinctive Permanent Identifier(s) as appropriate will be used if the // distinctiveIdentifier member of accumulated configuration is "required". Continue to the next step. // NOTE: Implement. break; case ConsentStatus::Allowed: // ↳ Allowed: // Continue to the next step. break; } // 23. Return accumulated configuration. callback(WTFMove(configuration)); }; getConsentStatus(WTFMove(optionalConfiguration.value()), WTFMove(restrictions), WTFMove(consentCallback)); } bool CDM::isPersistentType(MediaKeySessionType sessionType) { // https://w3c.github.io/encrypted-media/#is-persistent-session-type // W3C Editor's Draft 09 November 2016 // 5.1.1. Is persistent session type? // 1. Let the session type be the specified MediaKeySessionType value. // 2. Follow the steps for the value of session type from the following list: switch (sessionType) { case MediaKeySessionType::Temporary: // ↳ "temporary" return false; case MediaKeySessionType::PersistentLicense: case MediaKeySessionType::PersistentUsageRecord: // ↳ "persistent-license" return true; } ASSERT_NOT_REACHED(); return false; } std::optional<MediaKeySystemConfiguration> CDM::getSupportedConfiguration(const MediaKeySystemConfiguration& candidateConfiguration, MediaKeysRestrictions& restrictions) { // https://w3c.github.io/encrypted-media/#get-supported-configuration-and-consent // W3C Editor's Draft 09 November 2016 ASSERT(m_private); if (!m_private) return std::nullopt; // 3.1.1.2 Get Supported Configuration and Consent // Given a Key Systems implementation implementation, MediaKeySystemConfiguration candidate configuration, // restrictions and origin, this algorithm returns a supported configuration, NotSupported, or ConsentDenied // as appropriate and, in the ConsentDenied case, restrictions. // 1. Let accumulated configuration be a new MediaKeySystemConfiguration dictionary. MediaKeySystemConfiguration accumulatedConfiguration { }; // 2. Set the label member of accumulated configuration to equal the label member of candidate configuration. accumulatedConfiguration.label = candidateConfiguration.label; // 3. If the initDataTypes member of candidate configuration is non-empty, run the following steps: if (!candidateConfiguration.initDataTypes.isEmpty()) { // 3.1. Let supported types be an empty sequence of DOMStrings. Vector<String> supportedTypes; // 3.2. For each value in candidate configuration's initDataTypes member: for (auto initDataType : candidateConfiguration.initDataTypes) { // 3.2.1. Let initDataType be the value. // 3.2.2. If the implementation supports generating requests based on initDataType, add initDataType // to supported types. String comparison is case-sensitive. The empty string is never supported. if (initDataType.isEmpty()) continue; if (m_private && m_private->supportsInitDataType(initDataType)) supportedTypes.append(initDataType); } // 3.3. If supported types is empty, return NotSupported. if (supportedTypes.isEmpty()) return std::nullopt; // 3.4. Set the initDataTypes member of accumulated configuration to supported types. accumulatedConfiguration.initDataTypes = WTFMove(supportedTypes); } // 4. Let distinctive identifier requirement be the value of candidate configuration's distinctiveIdentifier member. MediaKeysRequirement distinctiveIdentifierRequirement = candidateConfiguration.distinctiveIdentifier; // 5. If distinctive identifier requirement is "optional" and Distinctive Identifiers are not allowed according to // restrictions, set distinctive identifier requirement to "not-allowed". if (distinctiveIdentifierRequirement == MediaKeysRequirement::Optional && restrictions.distinctiveIdentifierDenied) distinctiveIdentifierRequirement = MediaKeysRequirement::NotAllowed; // 6. Follow the steps for distinctive identifier requirement from the following list: switch (distinctiveIdentifierRequirement) { case MediaKeysRequirement::Required: // ↳ "required" // If the implementation does not support use of Distinctive Identifier(s) in combination // with accumulated configuration and restrictions, return NotSupported. if (m_private->distinctiveIdentifiersRequirement(accumulatedConfiguration, restrictions) == MediaKeysRequirement::NotAllowed) return std::nullopt; break; case MediaKeysRequirement::Optional: // ↳ "optional" // Continue with the following steps. break; case MediaKeysRequirement::NotAllowed: // ↳ "not-allowed" // If the implementation requires use Distinctive Identifier(s) or Distinctive Permanent Identifier(s) // in combination with accumulated configuration and restrictions, return NotSupported. if (m_private->distinctiveIdentifiersRequirement(accumulatedConfiguration, restrictions) == MediaKeysRequirement::Required) return std::nullopt; break; } // 7. Set the distinctiveIdentifier member of accumulated configuration to equal distinctive identifier requirement. accumulatedConfiguration.distinctiveIdentifier = distinctiveIdentifierRequirement; // 8. Let persistent state requirement be equal to the value of candidate configuration's persistentState member. MediaKeysRequirement persistentStateRequirement = candidateConfiguration.persistentState; // 9. If persistent state requirement is "optional" and persisting state is not allowed according to restrictions, // set persistent state requirement to "not-allowed". if (persistentStateRequirement == MediaKeysRequirement::Optional && restrictions.persistentStateDenied) persistentStateRequirement = MediaKeysRequirement::NotAllowed; // 10. Follow the steps for persistent state requirement from the following list: switch (persistentStateRequirement) { case MediaKeysRequirement::Required: // ↳ "required" // If the implementation does not support persisting state in combination with accumulated configuration // and restrictions, return NotSupported. if (m_private->persistentStateRequirement(accumulatedConfiguration, restrictions) == MediaKeysRequirement::NotAllowed) return std::nullopt; break; case MediaKeysRequirement::Optional: // ↳ "optional" // Continue with the following steps. break; case MediaKeysRequirement::NotAllowed: // ↳ "not-allowed" // If the implementation requires persisting state in combination with accumulated configuration // and restrictions, return NotSupported if (m_private->persistentStateRequirement(accumulatedConfiguration, restrictions) == MediaKeysRequirement::Required) return std::nullopt; break; } // 11. Set the persistentState member of accumulated configuration to equal the value of persistent state requirement. accumulatedConfiguration.persistentState = persistentStateRequirement; // 12. Follow the steps for the first matching condition from the following list: Vector<MediaKeySessionType> sessionTypes; if (!candidateConfiguration.sessionTypes.isEmpty()) { // ↳ If the sessionTypes member is present [WebIDL] in candidate configuration // Let session types be candidate configuration's sessionTypes member. sessionTypes = candidateConfiguration.sessionTypes; } else { // ↳ Otherwise // Let session types be [ "temporary" ]. sessionTypes = { MediaKeySessionType::Temporary }; } // 13. For each value in session types: for (auto& sessionType : sessionTypes) { // 13.1. Let session type be the value. // 13.2. If accumulated configuration's persistentState value is "not-allowed" and the // Is persistent session type? algorithm returns true for session type return NotSupported. if (accumulatedConfiguration.persistentState == MediaKeysRequirement::NotAllowed && isPersistentType(sessionType)) return std::nullopt; // 13.3. If the implementation does not support session type in combination with accumulated configuration // and restrictions for other reasons, return NotSupported. if (!m_private->supportsSessionTypeWithConfiguration(sessionType, accumulatedConfiguration)) return std::nullopt; // 13.4 If accumulated configuration's persistentState value is "optional" and the result of running the Is // persistent session type? algorithm on session type is true, change accumulated configuration's persistentState // value to "required". if (accumulatedConfiguration.persistentState == MediaKeysRequirement::Optional && isPersistentType(sessionType)) accumulatedConfiguration.persistentState = MediaKeysRequirement::Required; } // 14. Set the sessionTypes member of accumulated configuration to session types. accumulatedConfiguration.sessionTypes = sessionTypes; // 15. If the videoCapabilities and audioCapabilities members in candidate configuration are both empty, return NotSupported. if (candidateConfiguration.videoCapabilities.isEmpty() && candidateConfiguration.audioCapabilities.isEmpty()) return std::nullopt; // 16. ↳ If the videoCapabilities member in candidate configuration is non-empty: if (!candidateConfiguration.videoCapabilities.isEmpty()) { // 16.1. Let video capabilities be the result of executing the Get Supported Capabilities for Audio/Video Type algorithm on // Video, candidate configuration's videoCapabilities member, accumulated configuration, and restrictions. auto videoCapabilities = getSupportedCapabilitiesForAudioVideoType(AudioVideoType::Video, candidateConfiguration.videoCapabilities, accumulatedConfiguration, restrictions); // 16.2. If video capabilities is null, return NotSupported. if (!videoCapabilities) return std::nullopt; // 16.3 Set the videoCapabilities member of accumulated configuration to video capabilities. accumulatedConfiguration.videoCapabilities = WTFMove(videoCapabilities.value()); } else { // 16. ↳ Otherwise: // Set the videoCapabilities member of accumulated configuration to an empty sequence. accumulatedConfiguration.videoCapabilities = { }; } // 17. ↳ If the audioCapabilities member in candidate configuration is non-empty: if (!candidateConfiguration.audioCapabilities.isEmpty()) { // 17.1. Let audio capabilities be the result of executing the Get Supported Capabilities for Audio/Video Type algorithm on // Audio, candidate configuration's audioCapabilities member, accumulated configuration, and restrictions. auto audioCapabilities = getSupportedCapabilitiesForAudioVideoType(AudioVideoType::Audio, candidateConfiguration.audioCapabilities, accumulatedConfiguration, restrictions); // 17.2. If audio capabilities is null, return NotSupported. if (!audioCapabilities) return std::nullopt; // 17.3 Set the audioCapabilities member of accumulated configuration to audio capabilities. accumulatedConfiguration.audioCapabilities = WTFMove(audioCapabilities.value()); } else { // 17. ↳ Otherwise: // Set the audioCapabilities member of accumulated configuration to an empty sequence. accumulatedConfiguration.audioCapabilities = { }; } // 18. If accumulated configuration's distinctiveIdentifier value is "optional", follow the steps for the first matching // condition from the following list: if (accumulatedConfiguration.distinctiveIdentifier == MediaKeysRequirement::Optional) { // ↳ If the implementation requires use Distinctive Identifier(s) or Distinctive Permanent Identifier(s) for any of the // combinations in accumulated configuration if (m_private->distinctiveIdentifiersRequirement(accumulatedConfiguration, restrictions) == MediaKeysRequirement::Required) { // Change accumulated configuration's distinctiveIdentifier value to "required". accumulatedConfiguration.distinctiveIdentifier = MediaKeysRequirement::Required; } else { // ↳ Otherwise // Change accumulated configuration's distinctiveIdentifier value to "not-allowed". accumulatedConfiguration.distinctiveIdentifier = MediaKeysRequirement::NotAllowed; } } // 19. If accumulated configuration's persistentState value is "optional", follow the steps for the first matching // condition from the following list: if (accumulatedConfiguration.persistentState == MediaKeysRequirement::Optional) { // ↳ If the implementation requires persisting state for any of the combinations in accumulated configuration if (m_private->persistentStateRequirement(accumulatedConfiguration, restrictions) == MediaKeysRequirement::Required) { // Change accumulated configuration's persistentState value to "required". accumulatedConfiguration.persistentState = MediaKeysRequirement::Required; } else { // ↳ Otherwise // Change accumulated configuration's persistentState value to "not-allowed". accumulatedConfiguration.persistentState = MediaKeysRequirement::NotAllowed; } } // 20. If implementation in the configuration specified by the combination of the values in accumulated configuration // is not supported or not allowed in the origin, return NotSupported. if (!m_private->supportsConfiguration(accumulatedConfiguration)) return std::nullopt; Document* document = downcast<Document>(m_scriptExecutionContext); if (!document) return std::nullopt; SecurityOrigin& origin = document->securityOrigin(); SecurityOrigin& topOrigin = document->topOrigin(); if ((accumulatedConfiguration.distinctiveIdentifier == MediaKeysRequirement::Required || accumulatedConfiguration.persistentState == MediaKeysRequirement::Required) && !origin.canAccessLocalStorage(&topOrigin)) return std::nullopt; return WTFMove(accumulatedConfiguration); // NOTE: Continued in getConsentStatus(). } std::optional<Vector<MediaKeySystemMediaCapability>> CDM::getSupportedCapabilitiesForAudioVideoType(CDM::AudioVideoType type, const Vector<MediaKeySystemMediaCapability>& requestedCapabilities, const MediaKeySystemConfiguration& partialConfiguration, MediaKeysRestrictions& restrictions) { // https://w3c.github.io/encrypted-media/#get-supported-capabilities-for-audio-video-type // W3C Editor's Draft 09 November 2016 ASSERT(m_private); if (!m_private) return std::nullopt; // 3.1.1.3 Get Supported Capabilities for Audio/Video Type // Given an audio/video type, MediaKeySystemMediaCapability sequence requested media capabilities, MediaKeySystemConfiguration // partial configuration, and restrictions, this algorithm returns a sequence of supported MediaKeySystemMediaCapability values // for this audio/video type or null as appropriate. // 1. Let local accumulated configuration be a local copy of partial configuration. MediaKeySystemConfiguration accumulatedConfiguration = partialConfiguration; // 2. Let supported media capabilities be an empty sequence of MediaKeySystemMediaCapability dictionaries. Vector<MediaKeySystemMediaCapability> supportedMediaCapabilities { }; // 3. For each requested media capability in requested media capabilities: for (auto& requestedCapability : requestedCapabilities) { // 3.1. Let content type be requested media capability's contentType member. // 3.2. Let robustness be requested media capability's robustness member. String robustness = requestedCapability.robustness; // 3.3. If content type is the empty string, return null. if (requestedCapability.contentType.isEmpty()) return std::nullopt; // 3.4. If content type is an invalid or unrecognized MIME type, continue to the next iteration. if (!isValidContentType(requestedCapability.contentType)) continue; // 3.5. Let container be the container type specified by content type. ParsedContentType contentType { requestedCapability.contentType }; String container = contentType.mimeType(); // 3.6. If the user agent does not support container, continue to the next iteration. The case-sensitivity // of string comparisons is determined by the appropriate RFC. // 3.7. Let parameters be the RFC 6381 [RFC6381] parameters, if any, specified by content type. // 3.8. If the user agent does not recognize one or more parameters, continue to the next iteration. // 3.9. Let media types be the set of codecs and codec constraints specified by parameters. The case-sensitivity // of string comparisons is determined by the appropriate RFC or other specification. String codecs = contentType.parameterValueForName("codecs"); if (contentType.parameterCount() > (codecs.isEmpty() ? 0 : 1)) continue; // 3.10. If media types is empty: if (codecs.isEmpty()) { // ↳ If container normatively implies a specific set of codecs and codec constraints: // ↳ Otherwise: notImplemented(); } // 3.11. If content type is not strictly a audio/video type, continue to the next iteration. // 3.12. If robustness is not the empty string and contains an unrecognized value or a value not supported by // implementation, continue to the next iteration. String comparison is case-sensitive. if (!robustness.isEmpty() && !m_private->supportsRobustness(robustness)) continue; // 3.13. If the user agent and implementation definitely support playback of encrypted media data for the // combination of container, media types, robustness and local accumulated configuration in combination // with restrictions: MediaEngineSupportParameters parameters; parameters.type = ContentType(contentType.mimeType()); if (!MediaPlayer::supportsType(parameters)) { // Try with Media Source: parameters.isMediaSource = true; if (!MediaPlayer::supportsType(parameters)) continue; } if (!m_private->supportsConfigurationWithRestrictions(accumulatedConfiguration, restrictions)) continue; // 3.13.1. Add requested media capability to supported media capabilities. supportedMediaCapabilities.append(requestedCapability); // 3.13.2. ↳ If audio/video type is Video: // Add requested media capability to the videoCapabilities member of local accumulated configuration. if (type == AudioVideoType::Video) accumulatedConfiguration.videoCapabilities.append(requestedCapability); // 3.13.2. ↳ If audio/video type is Audio: // Add requested media capability to the audioCapabilities member of local accumulated configuration. else accumulatedConfiguration.audioCapabilities.append(requestedCapability); } // 4. If supported media capabilities is empty, return null. if (supportedMediaCapabilities.isEmpty()) return std::nullopt; // 5. Return supported media capabilities. return supportedMediaCapabilities; } void CDM::getConsentStatus(MediaKeySystemConfiguration&& accumulatedConfiguration, MediaKeysRestrictions&& restrictions, ConsentStatusCallback&& callback) { // https://w3c.github.io/encrypted-media/#get-supported-configuration-and-consent // W3C Editor's Draft 09 November 2016 if (!m_scriptExecutionContext) { callback(ConsentStatus::ConsentDenied, WTFMove(accumulatedConfiguration), WTFMove(restrictions)); return; } // NOTE: In the future, these checks belowe will involve asking the page client, possibly across a process boundary. // They will by necessity be asynchronous with callbacks. For now, imply this behavior by performing it in an async task. m_scriptExecutionContext->postTask([this, weakThis = makeWeakPtr(*this), accumulatedConfiguration = WTFMove(accumulatedConfiguration), restrictions = WTFMove(restrictions), callback = WTFMove(callback)] (ScriptExecutionContext&) mutable { if (!weakThis || !m_private) { callback(ConsentStatus::ConsentDenied, WTFMove(accumulatedConfiguration), WTFMove(restrictions)); return; } Document* document = downcast<Document>(m_scriptExecutionContext); if (!document) { callback(ConsentStatus::ConsentDenied, WTFMove(accumulatedConfiguration), WTFMove(restrictions)); return; } SecurityOrigin& origin = document->securityOrigin(); SecurityOrigin& topOrigin = document->topOrigin(); // 3.1.1.2 Get Supported Configuration and Consent, ctd. // 21. If accumulated configuration's distinctiveIdentifier value is "required" and the Distinctive Identifier(s) associated // with accumulated configuration are not unique per origin and profile and clearable: if (accumulatedConfiguration.distinctiveIdentifier == MediaKeysRequirement::Required && !m_private->distinctiveIdentifiersAreUniquePerOriginAndClearable(accumulatedConfiguration)) { // 21.1. Update restrictions to reflect that all configurations described by accumulated configuration do not have user consent. restrictions.distinctiveIdentifierDenied = true; callback(ConsentStatus::ConsentDenied, WTFMove(accumulatedConfiguration), WTFMove(restrictions)); return; } // https://w3c.github.io/encrypted-media/#get-consent-status // 3.1.1.4 Get Consent Status // Given an accumulated configuration, restrictions and origin, this algorithm returns the consent status for accumulated // configuration and origin as one of ConsentDenied, InformUser or Allowed, together with an updated value for restrictions // in the ConsentDenied case. // 1. If there is persisted denial for origin indicating that accumulated configuration is not allowed, run the following steps: // 1.1. Update restrictions to reflect the configurations for which consent has been denied. // 1.2. Return ConsentDenied and restrictions. // 2. If there is persisted consent for origin indicating accumulated configuration is allowed, return Allowed. // NOTE: persisted denial / consent unimplemented. // 3. If any of the following are true: // ↳ The distinctiveIdentifier member of accumulated configuration is not "not-allowed" and the combination of the User Agent, // implementation and accumulated configuration does not follow all the recommendations of Allow Persistent Data to Be Cleared // with respect to Distinctive Identifier(s). // NOTE: assume that implementations follow all recommendations. // ↳ The user agent requires explicit user consent for the accumulated configuration for other reasons. // NOTE: assume the user agent does not require explicit user consent. // 3.1. Request user consent to use accumulated configuration in the origin and wait for the user response. // The consent must include consent to use a Distinctive Identifier(s) and/or Distinctive Permanent Identifier(s) as appropriate // if accumulated configuration's distinctiveIdentifier member is "required". // 3.2. If consent was denied, run the following steps: // 3.2.1. Update restrictions to reflect the configurations for which consent was denied. // 3.2.1. Return ConsentDenied and restrictions. // NOTE: assume implied consent if the combination of origin and topOrigin allows it. if (accumulatedConfiguration.distinctiveIdentifier == MediaKeysRequirement::Required && !origin.canAccessLocalStorage(&topOrigin)) { restrictions.distinctiveIdentifierDenied = true; callback(ConsentStatus::ConsentDenied, WTFMove(accumulatedConfiguration), WTFMove(restrictions)); return; } // 4. If the distinctiveIdentifier member of accumulated configuration is not "not-allowed", return InformUser. if (accumulatedConfiguration.distinctiveIdentifier != MediaKeysRequirement::NotAllowed) { callback(ConsentStatus::InformUser, WTFMove(accumulatedConfiguration), WTFMove(restrictions)); return; } // 5. If the user agent requires informing the user for the accumulated configuration for other reasons, return InformUser. // NOTE: assume the user agent does not require informing the user. // 6. Return Allowed. callback(ConsentStatus::Allowed, WTFMove(accumulatedConfiguration), WTFMove(restrictions)); }); } void CDM::loadAndInitialize() { if (m_private) m_private->loadAndInitialize(); } RefPtr<CDMInstance> CDM::createInstance() { if (!m_private) return nullptr; auto instance = m_private->createInstance(); instance->setStorageDirectory(storageDirectory()); return instance; } bool CDM::supportsServerCertificates() const { return m_private && m_private->supportsServerCertificates(); } bool CDM::supportsSessions() const { return m_private && m_private->supportsSessions(); } bool CDM::supportsInitDataType(const AtomicString& initDataType) const { return m_private && m_private->supportsInitDataType(initDataType); } RefPtr<SharedBuffer> CDM::sanitizeInitData(const AtomicString& initDataType, const SharedBuffer& initData) { return InitDataRegistry::shared().sanitizeInitData(initDataType, initData); } bool CDM::supportsInitData(const AtomicString& initDataType, const SharedBuffer& initData) { return m_private && m_private->supportsInitData(initDataType, initData); } RefPtr<SharedBuffer> CDM::sanitizeResponse(const SharedBuffer& response) { if (!m_private) return nullptr; return m_private->sanitizeResponse(response); } std::optional<String> CDM::sanitizeSessionId(const String& sessionId) { if (!m_private) return std::nullopt; return m_private->sanitizeSessionId(sessionId); } String CDM::storageDirectory() const { auto* document = downcast<Document>(scriptExecutionContext()); if (!document) return emptyString(); auto* page = document->page(); if (!page || page->usesEphemeralSession()) return emptyString(); auto storageDirectory = document->settings().mediaKeysStorageDirectory(); if (storageDirectory.isEmpty()) return emptyString(); return FileSystem::pathByAppendingComponent(storageDirectory, document->securityOrigin().data().databaseIdentifier()); } } #endif