already_AddRefed<Promise>
MediaKeySession::GenerateRequest(const nsAString& aInitDataType,
const ArrayBufferViewOrArrayBuffer& aInitData,
ErrorResult& aRv)
{
RefPtr<DetailedPromise> promise(MakePromise(aRv,
NS_LITERAL_CSTRING("MediaKeySession.generateRequest")));
if (aRv.Failed()) {
return nullptr;
}
if (!mUninitialized) {
EME_LOG("MediaKeySession[%p,'%s'] GenerateRequest() failed, uninitialized",
this, NS_ConvertUTF16toUTF8(mSessionId).get());
promise->MaybeReject(NS_ERROR_DOM_INVALID_ACCESS_ERR,
NS_LITERAL_CSTRING("Session is already initialized in MediaKeySession.generateRequest()"));
return promise.forget();
}
mUninitialized = false;
if (aInitDataType.IsEmpty()) {
promise->MaybeReject(NS_ERROR_DOM_TYPE_ERR,
NS_LITERAL_CSTRING("Empty initDataType passed to MediaKeySession.generateRequest()"));
EME_LOG("MediaKeySession[%p,'%s'] GenerateRequest() failed, empty initDataType",
this, NS_ConvertUTF16toUTF8(mSessionId).get());
return promise.forget();
}
nsTArray<uint8_t> data;
CopyArrayBufferViewOrArrayBufferData(aInitData, data);
if (data.IsEmpty()) {
promise->MaybeReject(NS_ERROR_DOM_TYPE_ERR,
NS_LITERAL_CSTRING("Empty initData passed to MediaKeySession.generateRequest()"));
EME_LOG("MediaKeySession[%p,'%s'] GenerateRequest() failed, empty initData",
this, NS_ConvertUTF16toUTF8(mSessionId).get());
return promise.forget();
}
// Convert initData to base64 for easier logging.
// Note: CreateSession() Move()s the data out of the array, so we have
// to copy it here.
nsAutoCString base64InitData(ToBase64(data));
PromiseId pid = mKeys->StorePromise(promise);
mKeys->GetCDMProxy()->CreateSession(Token(),
mSessionType,
pid,
aInitDataType, data);
EME_LOG("MediaKeySession[%p,'%s'] GenerateRequest() sent, "
"promiseId=%d initData(base64)='%s' initDataType='%s'",
this,
NS_ConvertUTF16toUTF8(mSessionId).get(),
pid,
base64InitData.get(),
NS_ConvertUTF16toUTF8(aInitDataType).get());
return promise.forget();
}
// Generates a license request based on the initData. A message of type
// "license-request" or "individualization-request" will always be queued
// if the algorithm succeeds and the promise is resolved.
already_AddRefed<Promise>
MediaKeySession::GenerateRequest(const nsAString& aInitDataType,
const ArrayBufferViewOrArrayBuffer& aInitData,
ErrorResult& aRv)
{
RefPtr<DetailedPromise> promise(MakePromise(aRv,
NS_LITERAL_CSTRING("MediaKeySession.generateRequest")));
if (aRv.Failed()) {
return nullptr;
}
// If this object is closed, return a promise rejected with an InvalidStateError.
if (IsClosed()) {
EME_LOG("MediaKeySession[%p,'%s'] GenerateRequest() failed, closed",
this, NS_ConvertUTF16toUTF8(mSessionId).get());
promise->MaybeReject(NS_ERROR_DOM_INVALID_STATE_ERR,
NS_LITERAL_CSTRING("Session is closed in MediaKeySession.generateRequest()"));
return promise.forget();
}
// If this object's uninitialized value is false, return a promise rejected
// with an InvalidStateError.
if (!mUninitialized) {
EME_LOG("MediaKeySession[%p,'%s'] GenerateRequest() failed, uninitialized",
this, NS_ConvertUTF16toUTF8(mSessionId).get());
promise->MaybeReject(NS_ERROR_DOM_INVALID_STATE_ERR,
NS_LITERAL_CSTRING("Session is already initialized in MediaKeySession.generateRequest()"));
return promise.forget();
}
// Let this object's uninitialized value be false.
mUninitialized = false;
// If initDataType is the empty string, return a promise rejected
// with a newly created TypeError.
if (aInitDataType.IsEmpty()) {
promise->MaybeReject(NS_ERROR_DOM_TYPE_ERR,
NS_LITERAL_CSTRING("Empty initDataType passed to MediaKeySession.generateRequest()"));
EME_LOG("MediaKeySession[%p,'%s'] GenerateRequest() failed, empty initDataType",
this, NS_ConvertUTF16toUTF8(mSessionId).get());
return promise.forget();
}
// If initData is an empty array, return a promise rejected with
// a newly created TypeError.
nsTArray<uint8_t> data;
CopyArrayBufferViewOrArrayBufferData(aInitData, data);
if (data.IsEmpty()) {
promise->MaybeReject(NS_ERROR_DOM_TYPE_ERR,
NS_LITERAL_CSTRING("Empty initData passed to MediaKeySession.generateRequest()"));
EME_LOG("MediaKeySession[%p,'%s'] GenerateRequest() failed, empty initData",
this, NS_ConvertUTF16toUTF8(mSessionId).get());
return promise.forget();
}
// If the Key System implementation represented by this object's
// cdm implementation value does not support initDataType as an
// Initialization Data Type, return a promise rejected with a
// NotSupportedError. String comparison is case-sensitive.
if (!MediaKeySystemAccess::KeySystemSupportsInitDataType(mKeySystem, aInitDataType)) {
promise->MaybeReject(NS_ERROR_DOM_NOT_SUPPORTED_ERR,
NS_LITERAL_CSTRING("Unsupported initDataType passed to MediaKeySession.generateRequest()"));
EME_LOG("MediaKeySession[%p,'%s'] GenerateRequest() failed, unsupported initDataType",
this, NS_ConvertUTF16toUTF8(mSessionId).get());
return promise.forget();
}
// Let init data be a copy of the contents of the initData parameter.
// Note: Handled by the CopyArrayBufferViewOrArrayBufferData call above.
// Let session type be this object's session type.
// Let promise be a new promise.
// Run the following steps in parallel:
// If the init data is not valid for initDataType, reject promise with
// a newly created TypeError.
if (!ValidateInitData(data, aInitDataType)) {
// If the preceding step failed, reject promise with a newly created TypeError.
promise->MaybeReject(NS_ERROR_DOM_TYPE_ERR,
NS_LITERAL_CSTRING("initData sanitization failed in MediaKeySession.generateRequest()"));
EME_LOG("MediaKeySession[%p,'%s'] GenerateRequest() initData sanitization failed",
this, NS_ConvertUTF16toUTF8(mSessionId).get());
return promise.forget();
}
// Let sanitized init data be a validated and sanitized version of init data.
// If sanitized init data is empty, reject promise with a NotSupportedError.
// Note: Remaining steps of generateRequest method continue in CDM.
Telemetry::Accumulate(Telemetry::VIDEO_CDM_GENERATE_REQUEST_CALLED,
ToCDMTypeTelemetryEnum(mKeySystem));
// Convert initData to base64 for easier logging.
// Note: CreateSession() Move()s the data out of the array, so we have
// to copy it here.
nsAutoCString base64InitData(ToBase64(data));
PromiseId pid = mKeys->StorePromise(promise);
mKeys->ConnectPendingPromiseIdWithToken(pid, Token());
mKeys->GetCDMProxy()->CreateSession(Token(),
mSessionType,
pid,
aInitDataType, data);
EME_LOG("MediaKeySession[%p,'%s'] GenerateRequest() sent, "
"promiseId=%d initData(base64)='%s' initDataType='%s'",
this,
NS_ConvertUTF16toUTF8(mSessionId).get(),
pid,
base64InitData.get(),
NS_ConvertUTF16toUTF8(aInitDataType).get());
return promise.forget();
}
