Adding upstream version 124.0.1.upstream/124.0.1

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

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