media_key_session.cc | Explore in Territory

/*
 * Copyright (C) 2013 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 "third_party/blink/renderer/modules/encryptedmedia/media_key_session.h"

#include <cmath>
#include <limits>

#include "base/compiler_specific.h"
#include "base/containers/span.h"
#include "base/numerics/safe_conversions.h"
#include "encrypted_media_utils.h"
#include "media/base/content_decryption_module.h"
#include "media/base/eme_constants.h"
#include "third_party/blink/public/platform/task_type.h"
#include "third_party/blink/public/platform/web_content_decryption_module.h"
#include "third_party/blink/public/platform/web_content_decryption_module_exception.h"
#include "third_party/blink/public/platform/web_content_decryption_module_session.h"
#include "third_party/blink/public/platform/web_encrypted_media_key_information.h"
#include "third_party/blink/public/platform/web_string.h"
#include "third_party/blink/public/platform/web_url.h"
#include "third_party/blink/renderer/bindings/core/v8/active_script_wrappable_creation_key.h"
#include "third_party/blink/renderer/bindings/core/v8/script_promise.h"
#include "third_party/blink/renderer/bindings/core/v8/script_promise_resolver.h"
#include "third_party/blink/renderer/core/dom/dom_exception.h"
#include "third_party/blink/renderer/core/dom/events/event.h"
#include "third_party/blink/renderer/core/dom/events/event_queue.h"
#include "third_party/blink/renderer/core/execution_context/execution_context.h"
#include "third_party/blink/renderer/core/typed_arrays/dom_array_buffer.h"
#include "third_party/blink/renderer/modules/encryptedmedia/content_decryption_module_result_promise.h"
#include "third_party/blink/renderer/modules/encryptedmedia/encrypted_media_utils.h"
#include "third_party/blink/renderer/modules/encryptedmedia/media_key_message_event.h"
#include "third_party/blink/renderer/modules/encryptedmedia/media_keys.h"
#include "third_party/blink/renderer/platform/bindings/dom_wrapper_world.h"
#include "third_party/blink/renderer/platform/bindings/exception_state.h"
#include "third_party/blink/renderer/platform/bindings/script_state.h"
#include "third_party/blink/renderer/platform/bindings/v8_throw_exception.h"
#include "third_party/blink/renderer/platform/content_decryption_module_result.h"
#include "third_party/blink/renderer/platform/heap/garbage_collected.h"
#include "third_party/blink/renderer/platform/instrumentation/instance_counters.h"
#include "third_party/blink/renderer/platform/network/mime/content_type.h"
#include "third_party/blink/renderer/platform/timer.h"
#include "third_party/blink/renderer/platform/wtf/text/ascii_ctype.h"

#define MEDIA_KEY_SESSION_LOG_LEVEL …

namespace {

// Minimum and maximum length for session ids.
enum { … };

}  // namespace

namespace blink {

// Checks that |sessionId| looks correct and returns whether all checks pass.
static bool IsValidSessionId(const String& session_id) { … }

static bool IsPersistentSessionType(WebEncryptedMediaSessionType session_type) { … }

V8MediaKeySessionClosedReason::Enum ConvertSessionClosedReason(
    media::CdmSessionClosedReason reason) { … }

static ScriptPromise<IDLUndefined> CreateRejectedPromiseNotCallable(
    ExceptionState& exception_state) { … }

static void ThrowAlreadyClosed(ExceptionState& exception_state) { … }

static void ThrowAlreadyInitialized(ExceptionState& exception_state) { … }

// A class holding a pending action.
class MediaKeySession::PendingAction final
    : public GarbageCollected<MediaKeySession::PendingAction> { … };

// This class wraps the promise resolver used when initializing a new session
// and is passed to Chromium to fullfill the promise. This implementation of
// completeWithSession() will resolve the promise with void, while
// completeWithError() will reject the promise with an exception. complete()
// is not expected to be called, and will reject the promise.
class NewSessionResultPromise : public ContentDecryptionModuleResultPromise { … };

// This class wraps the promise resolver used when loading a session
// and is passed to Chromium to fullfill the promise. This implementation of
// completeWithSession() will resolve the promise with true/false, while
// completeWithError() will reject the promise with an exception. complete()
// is not expected to be called, and will reject the promise.
class LoadSessionResultPromise : public ContentDecryptionModuleResultPromise { … };

// This class wraps the promise resolver used by close. The implementation of
// complete() will resolve the promise with void and call
// OnClosePromiseResolved() on |session_|. All other complete() methods are
// not expected to be called (and will reject the promise).
class CloseSessionResultPromise : public ContentDecryptionModuleResultPromise { … };

// This class wraps the promise resolver used by update/remove. The
// implementation of complete() will resolve the promise with void. All other
// complete() methods are not expected to be called (and will reject the
// promise).
class SimpleResultPromise : public ContentDecryptionModuleResultPromise { … };

MediaKeySession::MediaKeySession(ScriptState* script_state,
                                 MediaKeys* media_keys,
                                 WebEncryptedMediaSessionType session_type,
                                 const MediaKeysConfig& config)
    : … { … }

MediaKeySession::~MediaKeySession() { … }

void MediaKeySession::Dispose() { … }

String MediaKeySession::sessionId() const { … }

ScriptPromise<V8MediaKeySessionClosedReason> MediaKeySession::closed(
    ScriptState* script_state) { … }

MediaKeyStatusMap* MediaKeySession::keyStatuses() { … }

ScriptPromise<IDLUndefined> MediaKeySession::generateRequest(
    ScriptState* script_state,
    const String& init_data_type_string,
    const DOMArrayPiece& init_data,
    ExceptionState& exception_state) { … }

void MediaKeySession::GenerateRequestTask(ContentDecryptionModuleResult* result,
                                          media::EmeInitDataType init_data_type,
                                          DOMArrayBuffer* init_data_buffer) { … }

void MediaKeySession::FinishGenerateRequest() { … }

ScriptPromise<IDLBoolean> MediaKeySession::load(
    ScriptState* script_state,
    const String& session_id,
    ExceptionState& exception_state) { … }

void MediaKeySession::LoadTask(ContentDecryptionModuleResult* result,
                               const String& session_id) { … }

void MediaKeySession::FinishLoad() { … }

ScriptPromise<IDLUndefined> MediaKeySession::update(
    ScriptState* script_state,
    const DOMArrayPiece& response,
    ExceptionState& exception_state) { … }

void MediaKeySession::UpdateTask(ContentDecryptionModuleResult* result,
                                 DOMArrayBuffer* sanitized_response) { … }

ScriptPromise<IDLUndefined> MediaKeySession::close(
    ScriptState* script_state,
    ExceptionState& exception_state) { … }

void MediaKeySession::CloseTask(ContentDecryptionModuleResult* result) { … }

void MediaKeySession::OnClosePromiseResolved() { … }

ScriptPromise<IDLUndefined> MediaKeySession::remove(
    ScriptState* script_state,
    ExceptionState& exception_state) { … }

void MediaKeySession::RemoveTask(ContentDecryptionModuleResult* result) { … }

void MediaKeySession::ActionTimerFired(TimerBase*) { … }

// Queue a task to fire a simple event named keymessage at the new object.
void MediaKeySession::OnSessionMessage(media::CdmMessageType message_type,
                                       const unsigned char* message,
                                       size_t message_length) { … }

void MediaKeySession::OnSessionClosed(media::CdmSessionClosedReason reason) { … }

void MediaKeySession::OnSessionExpirationUpdate(
    double updated_expiry_time_in_ms) { … }

void MediaKeySession::OnSessionKeysChange(
    const WebVector<WebEncryptedMediaKeyInformation>& keys,
    bool has_additional_usable_key) { … }

const AtomicString& MediaKeySession::InterfaceName() const { … }

ExecutionContext* MediaKeySession::GetExecutionContext() const { … }

bool MediaKeySession::HasPendingActivity() const { … }

void MediaKeySession::ContextDestroyed() { … }

void MediaKeySession::Trace(Visitor* visitor) const { … }

}  // namespace blink
chromium/third_party/blink/renderer/modules/encryptedmedia/media_key_session.cc
