ScriptPromise NavigatorRequestMediaKeySystemAccess::requestMediaKeySystemAccess(
ScriptState* scriptState,
Navigator& navigator,
const String& keySystem,
const HeapVector<MediaKeySystemConfiguration>& supportedConfigurations)
{
WTF_LOG(Media, "NavigatorRequestMediaKeySystemAccess::requestMediaKeySystemAccess()");
// From https://w3c.github.io/encrypted-media/#requestMediaKeySystemAccess
// When this method is invoked, the user agent must run the following steps:
// 1. If keySystem is an empty string, return a promise rejected with a
// new DOMException whose name is InvalidAccessError.
if (keySystem.isEmpty()) {
return ScriptPromise::rejectWithDOMException(
scriptState, DOMException::create(InvalidAccessError, "The keySystem parameter is empty."));
}
// 2. If supportedConfigurations was provided and is empty, return a
// promise rejected with a new DOMException whose name is
// InvalidAccessError.
if (!supportedConfigurations.size()) {
return ScriptPromise::rejectWithDOMException(
scriptState, DOMException::create(InvalidAccessError, "The supportedConfigurations parameter is empty."));
}
// 3-4. 'May Document use powerful features?' check.
ExecutionContext* executionContext = scriptState->executionContext();
String errorMessage;
if (executionContext->isPrivilegedContext(errorMessage)) {
UseCounter::count(executionContext, UseCounter::EncryptedMediaSecureOrigin);
} else {
UseCounter::countDeprecation(executionContext, UseCounter::EncryptedMediaInsecureOrigin);
// TODO(ddorwin): Implement the following:
// Reject promise with a new DOMException whose name is NotSupportedError.
}
// 5. Let origin be the origin of document.
// (Passed with the execution context in step 7.)
// 6. Let promise be a new promise.
Document* document = toDocument(executionContext);
if (!document->page()) {
return ScriptPromise::rejectWithDOMException(
scriptState, DOMException::create(InvalidStateError, "The context provided is not associated with a page."));
}
MediaKeySystemAccessInitializer* initializer = new MediaKeySystemAccessInitializer(scriptState, keySystem, supportedConfigurations);
ScriptPromise promise = initializer->promise();
// 7. Asynchronously determine support, and if allowed, create and
// initialize the MediaKeySystemAccess object.
MediaKeysController* controller = MediaKeysController::from(document->page());
WebEncryptedMediaClient* mediaClient = controller->encryptedMediaClient(executionContext);
mediaClient->requestMediaKeySystemAccess(WebEncryptedMediaRequest(initializer));
// 8. Return promise.
return promise;
}
