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/*
* Copyright (C) 2013-2017 Apple Inc. All Rights Reserved.
* Copyright (C) 2011 The Chromium Authors. 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. ``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
* 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.
*/
#pragma once
#include "InspectorFrontendRouter.h"
#include "InspectorProtocolTypes.h"
#include <functional>
#include <wtf/Function.h>
#include <wtf/RefCounted.h>
#include <wtf/RefPtr.h>
#include <wtf/text/WTFString.h>
namespace Inspector {
class BackendDispatcher;
typedef String ErrorString;
class JS_EXPORT_PRIVATE SupplementalBackendDispatcher : public RefCounted<SupplementalBackendDispatcher> {
public:
SupplementalBackendDispatcher(BackendDispatcher&);
virtual ~SupplementalBackendDispatcher();
virtual void dispatch(long requestId, const String& method, Ref<JSON::Object>&& message) = 0;
protected:
Ref<BackendDispatcher> m_backendDispatcher;
};
class JS_EXPORT_PRIVATE BackendDispatcher : public RefCounted<BackendDispatcher> {
public:
static Ref<BackendDispatcher> create(Ref<FrontendRouter>&&);
class JS_EXPORT_PRIVATE CallbackBase : public RefCounted<CallbackBase> {
public:
CallbackBase(Ref<BackendDispatcher>&&, long requestId);
bool isActive() const;
void disable() { m_alreadySent = true; }
void sendSuccess(Ref<JSON::Object>&&);
void sendFailure(const ErrorString&);
private:
Ref<BackendDispatcher> m_backendDispatcher;
long m_requestId;
bool m_alreadySent { false };
};
bool isActive() const;
bool hasProtocolErrors() const { return m_protocolErrors.size() > 0; }
enum CommonErrorCode {
ParseError = 0,
InvalidRequest,
MethodNotFound,
InvalidParams,
InternalError,
ServerError
};
void registerDispatcherForDomain(const String& domain, SupplementalBackendDispatcher*);
void dispatch(const String& message);
// Note that 'unused' is a workaround so the compiler can pick the right sendResponse based on arity.
// When <http://webkit.org/b/179847> is fixed or this class is renamed for the JSON::Object case,
// then this alternate method with a dummy parameter can be removed in favor of the one without it.
void sendResponse(long requestId, RefPtr<JSON::Object>&& result);
void sendResponse(long requestId, RefPtr<JSON::Object>&& result, bool unused);
void sendResponse(long requestId, Ref<JSON::Object>&& result);
void sendResponse(long requestId, Ref<JSON::Object>&& result, bool unused);
void sendPendingErrors();
void reportProtocolError(CommonErrorCode, const String& errorMessage);
void reportProtocolError(std::optional<long> relatedRequestId, CommonErrorCode, const String& errorMessage);
std::optional<bool> getBoolean(JSON::Object*, const String& name, bool required);
std::optional<int> getInteger(JSON::Object*, const String& name, bool required);
std::optional<double> getDouble(JSON::Object*, const String& name, bool required);
String getString(JSON::Object*, const String& name, bool required);
RefPtr<JSON::Value> getValue(JSON::Object*, const String& name, bool required);
RefPtr<JSON::Object> getObject(JSON::Object*, const String& name, bool required);
RefPtr<JSON::Array> getArray(JSON::Object*, const String& name, bool required);
private:
BackendDispatcher(Ref<FrontendRouter>&&);
template<typename T>
T getPropertyValue(JSON::Object*, const String& name, bool required, std::function<T(JSON::Value&)> converter, const char* typeName);
Ref<FrontendRouter> m_frontendRouter;
HashMap<String, SupplementalBackendDispatcher*> m_dispatchers;
// Protocol errors reported for the top-level request being processed.
// If processing a request triggers async responses, then any related errors will
// be attributed to the top-level request, but generate separate error messages.
Vector<std::tuple<CommonErrorCode, String>> m_protocolErrors;
// For synchronously handled requests, avoid plumbing requestId through every
// call that could potentially fail with a protocol error.
std::optional<long> m_currentRequestId { std::nullopt };
};
} // namespace Inspector
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