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-rw-r--r--dom/media/eme/MediaKeySession.cpp622
1 files changed, 622 insertions, 0 deletions
diff --git a/dom/media/eme/MediaKeySession.cpp b/dom/media/eme/MediaKeySession.cpp
new file mode 100644
index 0000000000..908df5f7c8
--- /dev/null
+++ b/dom/media/eme/MediaKeySession.cpp
@@ -0,0 +1,622 @@
+/* -*- 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/dom/MediaKeySession.h"
+
+#include <ctime>
+#include <utility>
+
+#include "GMPUtils.h"
+#include "mozilla/AsyncEventDispatcher.h"
+#include "mozilla/CDMProxy.h"
+#include "mozilla/EMEUtils.h"
+#include "mozilla/Encoding.h"
+#include "mozilla/dom/HTMLMediaElement.h"
+#include "mozilla/dom/KeyIdsInitDataBinding.h"
+#include "mozilla/dom/MediaEncryptedEvent.h"
+#include "mozilla/dom/MediaKeyError.h"
+#include "mozilla/dom/MediaKeyMessageEvent.h"
+#include "mozilla/dom/MediaKeyStatusMap.h"
+#include "mozilla/dom/MediaKeySystemAccess.h"
+#include "nsCycleCollectionParticipant.h"
+#include "nsPrintfCString.h"
+#include "psshparser/PsshParser.h"
+
+namespace mozilla::dom {
+
+NS_IMPL_CYCLE_COLLECTION_INHERITED(MediaKeySession, DOMEventTargetHelper,
+ mMediaKeyError, mKeys, mKeyStatusMap,
+ mClosed)
+
+NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION(MediaKeySession)
+NS_INTERFACE_MAP_END_INHERITING(DOMEventTargetHelper)
+
+NS_IMPL_ADDREF_INHERITED(MediaKeySession, DOMEventTargetHelper)
+NS_IMPL_RELEASE_INHERITED(MediaKeySession, DOMEventTargetHelper)
+
+// Count of number of instances. Used to give each instance a
+// unique token.
+static uint32_t sMediaKeySessionNum = 0;
+
+// Max length of keyId in EME "keyIds" or WebM init data format, as enforced
+// by web platform tests.
+static const uint32_t MAX_KEY_ID_LENGTH = 512;
+
+// Max length of CENC PSSH init data tolerated, as enforced by web
+// platform tests.
+static const uint32_t MAX_CENC_INIT_DATA_LENGTH = 64 * 1024;
+
+MediaKeySession::MediaKeySession(nsPIDOMWindowInner* aParent, MediaKeys* aKeys,
+ const nsAString& aKeySystem,
+ MediaKeySessionType aSessionType,
+ ErrorResult& aRv)
+ : DOMEventTargetHelper(aParent),
+ mKeys(aKeys),
+ mKeySystem(aKeySystem),
+ mSessionType(aSessionType),
+ mToken(sMediaKeySessionNum++),
+ mIsClosed(false),
+ mUninitialized(true),
+ mKeyStatusMap(new MediaKeyStatusMap(aParent)),
+ mExpiration(JS::GenericNaN()) {
+ EME_LOG("MediaKeySession[%p,''] ctor", this);
+
+ MOZ_ASSERT(aParent);
+ if (aRv.Failed()) {
+ return;
+ }
+ mClosed = MakePromise(aRv, "MediaKeys.createSession"_ns);
+}
+
+void MediaKeySession::SetSessionId(const nsAString& aSessionId) {
+ EME_LOG("MediaKeySession[%p,'%s'] session Id set", this,
+ NS_ConvertUTF16toUTF8(aSessionId).get());
+
+ if (NS_WARN_IF(!mSessionId.IsEmpty())) {
+ return;
+ }
+ mSessionId = aSessionId;
+ mKeys->OnSessionIdReady(this);
+}
+
+MediaKeySession::~MediaKeySession() {
+ EME_LOG("MediaKeySession[%p,'%s'] dtor", this,
+ NS_ConvertUTF16toUTF8(mSessionId).get());
+}
+
+MediaKeyError* MediaKeySession::GetError() const { return mMediaKeyError; }
+
+void MediaKeySession::GetSessionId(nsString& aSessionId) const {
+ aSessionId = GetSessionId();
+}
+
+const nsString& MediaKeySession::GetSessionId() const { return mSessionId; }
+
+JSObject* MediaKeySession::WrapObject(JSContext* aCx,
+ JS::Handle<JSObject*> aGivenProto) {
+ return MediaKeySession_Binding::Wrap(aCx, this, aGivenProto);
+}
+
+double MediaKeySession::Expiration() const { return mExpiration; }
+
+Promise* MediaKeySession::Closed() const { return mClosed; }
+
+void MediaKeySession::UpdateKeyStatusMap() {
+ MOZ_ASSERT(!IsClosed());
+ if (!mKeys->GetCDMProxy()) {
+ return;
+ }
+
+ nsTArray<CDMCaps::KeyStatus> keyStatuses;
+ {
+ auto caps = mKeys->GetCDMProxy()->Capabilites().Lock();
+ caps->GetKeyStatusesForSession(mSessionId, keyStatuses);
+ }
+
+ mKeyStatusMap->Update(keyStatuses);
+
+ if (EME_LOG_ENABLED()) {
+ nsAutoCString message(
+ nsPrintfCString("MediaKeySession[%p,'%s'] key statuses change {", this,
+ NS_ConvertUTF16toUTF8(mSessionId).get()));
+ for (const CDMCaps::KeyStatus& status : keyStatuses) {
+ message.AppendPrintf(
+ " (%s,%s)", ToHexString(status.mId).get(),
+ nsCString(MediaKeyStatusValues::GetString(status.mStatus)).get());
+ }
+ message.AppendLiteral(" }");
+ // Use %s so we aren't exposing random strings to printf interpolation.
+ EME_LOG("%s", message.get());
+ }
+}
+
+MediaKeyStatusMap* MediaKeySession::KeyStatuses() const {
+ return mKeyStatusMap;
+}
+
+// The user agent MUST thoroughly validate the Initialization Data before
+// passing it to the CDM. This includes verifying that the length and
+// values of fields are reasonable, verifying that values are within
+// reasonable limits, and stripping irrelevant, unsupported, or unknown
+// data or fields. It is RECOMMENDED that user agents pre-parse, sanitize,
+// and/or generate a fully sanitized version of the Initialization Data.
+// If the Initialization Data format specified by initDataType supports
+// multiple entries, the user agent SHOULD remove entries that are not
+// needed by the CDM. The user agent MUST NOT re-order entries within
+// the Initialization Data.
+static bool ValidateInitData(const nsTArray<uint8_t>& aInitData,
+ const nsAString& aInitDataType) {
+ if (aInitDataType.LowerCaseEqualsLiteral("webm")) {
+ // WebM initData consists of a single keyId. Ensure it's of reasonable
+ // length.
+ return aInitData.Length() <= MAX_KEY_ID_LENGTH;
+ } else if (aInitDataType.LowerCaseEqualsLiteral("cenc")) {
+ // Limit initData to less than 64KB.
+ if (aInitData.Length() > MAX_CENC_INIT_DATA_LENGTH) {
+ return false;
+ }
+ std::vector<std::vector<uint8_t>> keyIds;
+ return ParseCENCInitData(aInitData.Elements(), aInitData.Length(), keyIds);
+ } else if (aInitDataType.LowerCaseEqualsLiteral("keyids")) {
+ if (aInitData.Length() > MAX_KEY_ID_LENGTH) {
+ return false;
+ }
+ // Ensure that init data matches the expected JSON format.
+ mozilla::dom::KeyIdsInitData keyIds;
+ nsString json;
+ nsDependentCSubstring raw(
+ reinterpret_cast<const char*>(aInitData.Elements()),
+ aInitData.Length());
+ if (NS_FAILED(UTF_8_ENCODING->DecodeWithBOMRemoval(raw, json))) {
+ return false;
+ }
+ if (!keyIds.Init(json)) {
+ return false;
+ }
+ if (keyIds.mKids.Length() == 0) {
+ return false;
+ }
+ for (const auto& kid : keyIds.mKids) {
+ if (kid.IsEmpty()) {
+ return false;
+ }
+ }
+ }
+ return true;
+}
+
+// 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, "MediaKeySession.generateRequest"_ns));
+ 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->MaybeRejectWithInvalidStateError(
+ "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->MaybeRejectWithInvalidStateError(
+ "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->MaybeRejectWithTypeError(
+ "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->MaybeRejectWithTypeError(
+ "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->MaybeRejectWithNotSupportedError(
+ "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->MaybeRejectWithTypeError(
+ "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.
+
+ // Convert initData to hex for easier logging.
+ // Note: CreateSession() std::move()s the data out of the array, so we have
+ // to copy it here.
+ nsAutoCString hexInitData(ToHexString(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='%s' initDataType='%s'",
+ this, NS_ConvertUTF16toUTF8(mSessionId).get(), pid, hexInitData.get(),
+ NS_ConvertUTF16toUTF8(aInitDataType).get());
+
+ return promise.forget();
+}
+
+already_AddRefed<Promise> MediaKeySession::Load(const nsAString& aSessionId,
+ ErrorResult& aRv) {
+ RefPtr<DetailedPromise> promise(MakePromise(aRv, "MediaKeySession.load"_ns));
+ if (aRv.Failed()) {
+ return nullptr;
+ }
+
+ // 1. If this object is closed, return a promise rejected with an
+ // InvalidStateError.
+ if (IsClosed()) {
+ promise->MaybeRejectWithInvalidStateError(
+ "Session is closed in MediaKeySession.load()");
+ EME_LOG("MediaKeySession[%p,'%s'] Load() failed, closed", this,
+ NS_ConvertUTF16toUTF8(aSessionId).get());
+ return promise.forget();
+ }
+
+ // 2.If this object's uninitialized value is false, return a promise rejected
+ // with an InvalidStateError.
+ if (!mUninitialized) {
+ promise->MaybeRejectWithInvalidStateError(
+ "Session is already initialized in MediaKeySession.load()");
+ EME_LOG("MediaKeySession[%p,'%s'] Load() failed, uninitialized", this,
+ NS_ConvertUTF16toUTF8(aSessionId).get());
+ return promise.forget();
+ }
+
+ // 3.Let this object's uninitialized value be false.
+ mUninitialized = false;
+
+ // 4. If sessionId is the empty string, return a promise rejected with a newly
+ // created TypeError.
+ if (aSessionId.IsEmpty()) {
+ promise->MaybeRejectWithTypeError(
+ "Trying to load a session with empty session ID");
+ // "The sessionId parameter is empty."
+ EME_LOG("MediaKeySession[%p,''] Load() failed, no sessionId", this);
+ return promise.forget();
+ }
+
+ // 5. If the result of running the Is persistent session type? algorithm
+ // on this object's session type is false, return a promise rejected with
+ // a newly created TypeError.
+ if (mSessionType == MediaKeySessionType::Temporary) {
+ promise->MaybeRejectWithTypeError(
+ "Trying to load() into a non-persistent session");
+ EME_LOG(
+ "MediaKeySession[%p,''] Load() failed, can't load in a non-persistent "
+ "session",
+ this);
+ return promise.forget();
+ }
+
+ // Note: We don't support persistent sessions in any keysystem, so all calls
+ // to Load() should reject with a TypeError in the preceding check. Omitting
+ // implementing the rest of the specified MediaKeySession::Load() algorithm.
+
+ // We now know the sessionId being loaded into this session. Remove the
+ // session from its owning MediaKey's set of sessions awaiting a sessionId.
+ RefPtr<MediaKeySession> session(mKeys->GetPendingSession(Token()));
+ MOZ_ASSERT(session == this, "Session should be awaiting id on its own token");
+
+ // Associate with the known sessionId.
+ SetSessionId(aSessionId);
+
+ PromiseId pid = mKeys->StorePromise(promise);
+ mKeys->GetCDMProxy()->LoadSession(pid, mSessionType, aSessionId);
+
+ EME_LOG("MediaKeySession[%p,'%s'] Load() sent to CDM, promiseId=%d", this,
+ NS_ConvertUTF16toUTF8(mSessionId).get(), pid);
+
+ return promise.forget();
+}
+
+already_AddRefed<Promise> MediaKeySession::Update(
+ const ArrayBufferViewOrArrayBuffer& aResponse, ErrorResult& aRv) {
+ RefPtr<DetailedPromise> promise(
+ MakePromise(aRv, "MediaKeySession.update"_ns));
+ if (aRv.Failed()) {
+ return nullptr;
+ }
+
+ if (!IsCallable()) {
+ // If this object's callable value is false, return a promise rejected
+ // with a new DOMException whose name is InvalidStateError.
+ EME_LOG(
+ "MediaKeySession[%p,''] Update() called before sessionId set by CDM",
+ this);
+ promise->MaybeRejectWithInvalidStateError(
+ "MediaKeySession.Update() called before sessionId set by CDM");
+ return promise.forget();
+ }
+
+ nsTArray<uint8_t> data;
+ if (IsClosed() || !mKeys->GetCDMProxy()) {
+ promise->MaybeRejectWithInvalidStateError(
+ "Session is closed or was not properly initialized");
+ EME_LOG(
+ "MediaKeySession[%p,'%s'] Update() failed, session is closed or was "
+ "not properly initialised.",
+ this, NS_ConvertUTF16toUTF8(mSessionId).get());
+ return promise.forget();
+ }
+ CopyArrayBufferViewOrArrayBufferData(aResponse, data);
+ if (data.IsEmpty()) {
+ promise->MaybeRejectWithTypeError(
+ "Empty response buffer passed to MediaKeySession.update()");
+ EME_LOG("MediaKeySession[%p,'%s'] Update() failed, empty response buffer",
+ this, NS_ConvertUTF16toUTF8(mSessionId).get());
+ return promise.forget();
+ }
+
+ // Convert response to hex for easier logging.
+ // Note: UpdateSession() std::move()s the data out of the array, so we have
+ // to copy it here.
+ nsAutoCString hexResponse(ToHexString(data));
+
+ PromiseId pid = mKeys->StorePromise(promise);
+ mKeys->GetCDMProxy()->UpdateSession(mSessionId, pid, data);
+
+ EME_LOG(
+ "MediaKeySession[%p,'%s'] Update() sent to CDM, "
+ "promiseId=%d Response='%s'",
+ this, NS_ConvertUTF16toUTF8(mSessionId).get(), pid, hexResponse.get());
+
+ return promise.forget();
+}
+
+already_AddRefed<Promise> MediaKeySession::Close(ErrorResult& aRv) {
+ RefPtr<DetailedPromise> promise(MakePromise(aRv, "MediaKeySession.close"_ns));
+ if (aRv.Failed()) {
+ return nullptr;
+ }
+ // 1. Let session be the associated MediaKeySession object.
+ // 2. If session is closed, return a resolved promise.
+ if (IsClosed()) {
+ EME_LOG("MediaKeySession[%p,'%s'] Close() already closed", this,
+ NS_ConvertUTF16toUTF8(mSessionId).get());
+ promise->MaybeResolveWithUndefined();
+ return promise.forget();
+ }
+ // 3. If session's callable value is false, return a promise rejected
+ // with an InvalidStateError.
+ if (!IsCallable()) {
+ EME_LOG("MediaKeySession[%p,''] Close() called before sessionId set by CDM",
+ this);
+ promise->MaybeRejectWithInvalidStateError(
+ "MediaKeySession.Close() called before sessionId set by CDM");
+ return promise.forget();
+ }
+ if (!mKeys->GetCDMProxy()) {
+ EME_LOG("MediaKeySession[%p,'%s'] Close() null CDMProxy", this,
+ NS_ConvertUTF16toUTF8(mSessionId).get());
+ promise->MaybeRejectWithInvalidStateError(
+ "MediaKeySession.Close() lost reference to CDM");
+ return promise.forget();
+ }
+ // 4. Let promise be a new promise.
+ PromiseId pid = mKeys->StorePromise(promise);
+ // 5. Run the following steps in parallel:
+ // 5.1 Let cdm be the CDM instance represented by session's cdm instance
+ // value. 5.2 Use cdm to close the session associated with session.
+ mKeys->GetCDMProxy()->CloseSession(mSessionId, pid);
+
+ EME_LOG("MediaKeySession[%p,'%s'] Close() sent to CDM, promiseId=%d", this,
+ NS_ConvertUTF16toUTF8(mSessionId).get(), pid);
+
+ // Session Closed algorithm is run when CDM causes us to run
+ // OnSessionClosed().
+
+ // 6. Return promise.
+ return promise.forget();
+}
+
+void MediaKeySession::OnClosed() {
+ if (IsClosed()) {
+ return;
+ }
+ EME_LOG("MediaKeySession[%p,'%s'] session close operation complete.", this,
+ NS_ConvertUTF16toUTF8(mSessionId).get());
+ mIsClosed = true;
+ mKeys->OnSessionClosed(this);
+ mKeys = nullptr;
+ mClosed->MaybeResolveWithUndefined();
+}
+
+bool MediaKeySession::IsClosed() const { return mIsClosed; }
+
+already_AddRefed<Promise> MediaKeySession::Remove(ErrorResult& aRv) {
+ RefPtr<DetailedPromise> promise(
+ MakePromise(aRv, "MediaKeySession.remove"_ns));
+ if (aRv.Failed()) {
+ return nullptr;
+ }
+ if (!IsCallable()) {
+ // If this object's callable value is false, return a promise rejected
+ // with a new DOMException whose name is InvalidStateError.
+ EME_LOG(
+ "MediaKeySession[%p,''] Remove() called before sessionId set by CDM",
+ this);
+ promise->MaybeRejectWithInvalidStateError(
+ "MediaKeySession.Remove() called before sessionId set by CDM");
+ return promise.forget();
+ }
+ if (mSessionType != MediaKeySessionType::Persistent_license) {
+ promise->MaybeRejectWithInvalidAccessError(
+ "Calling MediaKeySession.remove() on non-persistent session");
+ // "The operation is not supported on session type sessions."
+ EME_LOG("MediaKeySession[%p,'%s'] Remove() failed, sesion not persisrtent.",
+ this, NS_ConvertUTF16toUTF8(mSessionId).get());
+ return promise.forget();
+ }
+ if (IsClosed() || !mKeys->GetCDMProxy()) {
+ promise->MaybeRejectWithInvalidStateError(
+ "MediaKeySession.remove() called but session is not active");
+ // "The session is closed."
+ EME_LOG("MediaKeySession[%p,'%s'] Remove() failed, already session closed.",
+ this, NS_ConvertUTF16toUTF8(mSessionId).get());
+ return promise.forget();
+ }
+ PromiseId pid = mKeys->StorePromise(promise);
+ mKeys->GetCDMProxy()->RemoveSession(mSessionId, pid);
+ EME_LOG("MediaKeySession[%p,'%s'] Remove() sent to CDM, promiseId=%d.", this,
+ NS_ConvertUTF16toUTF8(mSessionId).get(), pid);
+
+ return promise.forget();
+}
+
+void MediaKeySession::DispatchKeyMessage(MediaKeyMessageType aMessageType,
+ const nsTArray<uint8_t>& aMessage) {
+ if (EME_LOG_ENABLED()) {
+ EME_LOG(
+ "MediaKeySession[%p,'%s'] DispatchKeyMessage() type=%s message='%s'",
+ this, NS_ConvertUTF16toUTF8(mSessionId).get(),
+ nsCString(MediaKeyMessageTypeValues::GetString(aMessageType)).get(),
+ ToHexString(aMessage).get());
+ }
+
+ RefPtr<MediaKeyMessageEvent> event(
+ MediaKeyMessageEvent::Constructor(this, aMessageType, aMessage));
+ RefPtr<AsyncEventDispatcher> asyncDispatcher =
+ new AsyncEventDispatcher(this, event.forget());
+ asyncDispatcher->PostDOMEvent();
+}
+
+void MediaKeySession::DispatchKeyError(uint32_t aSystemCode) {
+ EME_LOG("MediaKeySession[%p,'%s'] DispatchKeyError() systemCode=%u.", this,
+ NS_ConvertUTF16toUTF8(mSessionId).get(), aSystemCode);
+
+ auto event = MakeRefPtr<MediaKeyError>(this, aSystemCode);
+ RefPtr<AsyncEventDispatcher> asyncDispatcher =
+ new AsyncEventDispatcher(this, event.forget());
+ asyncDispatcher->PostDOMEvent();
+}
+
+void MediaKeySession::DispatchKeyStatusesChange() {
+ if (IsClosed()) {
+ return;
+ }
+
+ UpdateKeyStatusMap();
+
+ RefPtr<AsyncEventDispatcher> asyncDispatcher =
+ new AsyncEventDispatcher(this, u"keystatuseschange"_ns, CanBubble::eNo);
+ asyncDispatcher->PostDOMEvent();
+}
+
+uint32_t MediaKeySession::Token() const { return mToken; }
+
+already_AddRefed<DetailedPromise> MediaKeySession::MakePromise(
+ ErrorResult& aRv, const nsACString& aName) {
+ nsCOMPtr<nsIGlobalObject> global = GetParentObject();
+ if (!global) {
+ NS_WARNING("Passed non-global to MediaKeys ctor!");
+ aRv.Throw(NS_ERROR_UNEXPECTED);
+ return nullptr;
+ }
+ return DetailedPromise::Create(global, aRv, aName);
+}
+
+void MediaKeySession::SetExpiration(double aExpiration) {
+ EME_LOG("MediaKeySession[%p,'%s'] SetExpiry(%.12lf) (%.2lf hours from now)",
+ this, NS_ConvertUTF16toUTF8(mSessionId).get(), aExpiration,
+ (aExpiration - 1000.0 * double(time(0))) / (1000.0 * 60 * 60));
+ mExpiration = aExpiration;
+}
+
+EventHandlerNonNull* MediaKeySession::GetOnkeystatuseschange() {
+ return GetEventHandler(nsGkAtoms::onkeystatuseschange);
+}
+
+void MediaKeySession::SetOnkeystatuseschange(EventHandlerNonNull* aCallback) {
+ SetEventHandler(nsGkAtoms::onkeystatuseschange, aCallback);
+}
+
+EventHandlerNonNull* MediaKeySession::GetOnmessage() {
+ return GetEventHandler(nsGkAtoms::onmessage);
+}
+
+void MediaKeySession::SetOnmessage(EventHandlerNonNull* aCallback) {
+ SetEventHandler(nsGkAtoms::onmessage, aCallback);
+}
+
+nsCString ToCString(MediaKeySessionType aType) {
+ return nsCString(MediaKeySessionTypeValues::GetString(aType));
+}
+
+nsString ToString(MediaKeySessionType aType) {
+ return NS_ConvertUTF8toUTF16(ToCString(aType));
+}
+
+} // namespace mozilla::dom