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// Copyright 2014 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "third_party/blink/renderer/modules/encryptedmedia/content_decryption_module_result_promise.h"
#include "media/base/key_systems.h"
#include "services/metrics/public/cpp/ukm_builders.h"
#include "services/metrics/public/cpp/ukm_recorder.h"
#include "third_party/blink/public/platform/web_content_decryption_module.h"
#include "third_party/blink/public/platform/web_string.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/bindings/core/v8/v8_throw_dom_exception.h"
#include "third_party/blink/renderer/core/dom/document.h"
#include "third_party/blink/renderer/core/dom/dom_exception.h"
#include "third_party/blink/renderer/core/dom/quota_exceeded_error.h"
#include "third_party/blink/renderer/core/execution_context/execution_context.h"
#include "third_party/blink/renderer/core/frame/local_dom_window.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/wtf/text/string_builder.h"
namespace blink {
void WebCdmExceptionToPromiseRejection(
ScriptPromiseResolverBase* resolver,
WebContentDecryptionModuleException cdm_exception,
const String& message) {
switch (cdm_exception) {
case kWebContentDecryptionModuleExceptionTypeError:
resolver->RejectWithTypeError(message);
return;
case kWebContentDecryptionModuleExceptionNotSupportedError:
resolver->RejectWithDOMException(DOMExceptionCode::kNotSupportedError,
message);
return;
case kWebContentDecryptionModuleExceptionInvalidStateError:
resolver->RejectWithDOMException(DOMExceptionCode::kInvalidStateError,
message);
return;
case kWebContentDecryptionModuleExceptionQuotaExceededError:
QuotaExceededError::Reject(resolver, message);
return;
}
NOTREACHED();
}
ContentDecryptionModuleResultPromise::ContentDecryptionModuleResultPromise(
ScriptPromiseResolverBase* resolver,
const MediaKeysConfig& config,
EmeApiType api_type)
: resolver_(resolver), config_(config), api_type_(api_type) {}
ContentDecryptionModuleResultPromise::~ContentDecryptionModuleResultPromise() =
default;
void ContentDecryptionModuleResultPromise::Complete() {
NOTREACHED();
}
void ContentDecryptionModuleResultPromise::CompleteWithContentDecryptionModule(
std::unique_ptr<WebContentDecryptionModule> cdm) {
NOTREACHED();
}
void ContentDecryptionModuleResultPromise::CompleteWithSession(
WebContentDecryptionModuleResult::SessionStatus status) {
NOTREACHED();
}
void ContentDecryptionModuleResultPromise::CompleteWithKeyStatus(
WebEncryptedMediaKeyInformation::KeyStatus) {
if (!IsValidToFulfillPromise())
return;
resolver_->RejectWithDOMException(DOMExceptionCode::kInvalidStateError,
"Unexpected completion.");
resolver_.Clear();
}
void ContentDecryptionModuleResultPromise::CompleteWithError(
WebContentDecryptionModuleException exception_code,
uint32_t system_code,
const WebString& error_message) {
if (!IsValidToFulfillPromise())
return;
// Report Media.EME.ApiPromiseRejection UKM.
auto* execution_context = GetExecutionContext();
if (IsA<LocalDOMWindow>(execution_context)) {
Document* document = To<LocalDOMWindow>(execution_context)->document();
if (document) {
ukm::builders::Media_EME_ApiPromiseRejection builder(
document->UkmSourceID());
builder.SetKeySystem(
media::GetKeySystemIntForUKM(config_.key_system.Ascii()));
builder.SetUseHardwareSecureCodecs(
static_cast<int>(config_.use_hardware_secure_codecs));
builder.SetApi(static_cast<int>(api_type_));
builder.SetSystemCode(system_code);
builder.Record(document->UkmRecorder());
}
}
// Non-zero |system_code| is appended to the |error_message|. If the
// |error_message| is empty, we'll report "Rejected with system code
// (|system_code|)".
StringBuilder result;
result.Append(error_message);
if (system_code != 0) {
if (result.empty())
result.Append("Rejected with system code");
result.Append(" (");
result.AppendNumber(system_code);
result.Append(')');
}
WebCdmExceptionToPromiseRejection(resolver_, exception_code,
result.ToString());
resolver_.Clear();
}
ExecutionContext* ContentDecryptionModuleResultPromise::GetExecutionContext()
const {
return resolver_->GetExecutionContext();
}
bool ContentDecryptionModuleResultPromise::IsValidToFulfillPromise() {
// getExecutionContext() is no longer valid once the context is destroyed.
// isContextDestroyed() is called to see if the context is in the
// process of being destroyed. If it is, there is no need to fulfill this
// promise which is about to go away anyway.
return GetExecutionContext() && !GetExecutionContext()->IsContextDestroyed();
}
MediaKeysConfig ContentDecryptionModuleResultPromise::GetMediaKeysConfig() {
return config_;
}
void ContentDecryptionModuleResultPromise::Trace(Visitor* visitor) const {
visitor->Trace(resolver_);
ContentDecryptionModuleResult::Trace(visitor);
}
} // namespace blink
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