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/*
* Copyright (C) 2019 Sony Interactive Entertainment Inc.
*
* 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.
*/
#pragma once
#if ENABLE(REMOTE_INSPECTOR)
#include "RemoteInspectorSocket.h"
#include <wtf/Condition.h>
#include <wtf/Function.h>
#include <wtf/HashMap.h>
#include <wtf/Lock.h>
#include <wtf/TZoneMalloc.h>
#include <wtf/Threading.h>
#include <wtf/Vector.h>
#include <wtf/text/WTFString.h>
namespace Inspector {
class RemoteInspectorSocketEndpoint {
WTF_MAKE_TZONE_ALLOCATED_EXPORT(RemoteInspectorSocketEndpoint, JS_EXPORT_PRIVATE);
public:
class Client {
public:
virtual ~Client() { }
// These callbacks are not guaranteed to be called from the main thread.
virtual void didReceive(RemoteInspectorSocketEndpoint&, ConnectionID, Vector<uint8_t>&&) = 0;
virtual void didClose(RemoteInspectorSocketEndpoint&, ConnectionID) = 0;
};
class Listener {
public:
enum class Status : uint8_t {
Listening,
Invalid,
Closed,
};
virtual ~Listener() { }
// These callbacks are not guaranteed to be called from the main thread.
virtual std::optional<ConnectionID> doAccept(RemoteInspectorSocketEndpoint&, PlatformSocketType) = 0;
virtual void didChangeStatus(RemoteInspectorSocketEndpoint&, ConnectionID, Status) = 0;
};
JS_EXPORT_PRIVATE static RemoteInspectorSocketEndpoint& singleton();
RemoteInspectorSocketEndpoint();
JS_EXPORT_PRIVATE ~RemoteInspectorSocketEndpoint();
std::optional<ConnectionID> connectInet(const char* serverAddr, uint16_t serverPort, Client&);
JS_EXPORT_PRIVATE std::optional<ConnectionID> listenInet(const char* address, uint16_t port, Listener&);
void invalidateClient(Client&);
void invalidateListener(Listener&);
JS_EXPORT_PRIVATE void send(ConnectionID, std::span<const uint8_t>);
JS_EXPORT_PRIVATE std::optional<ConnectionID> createClient(PlatformSocketType, Client&);
std::optional<uint16_t> getPort(ConnectionID) const;
JS_EXPORT_PRIVATE void disconnect(ConnectionID);
protected:
struct BaseConnection {
WTF_MAKE_STRUCT_TZONE_ALLOCATED(BaseConnection);
BaseConnection(ConnectionID id)
: id { id }
, socket { INVALID_SOCKET_VALUE }
{
}
bool setSocket(PlatformSocketType newSocket)
{
ASSERT(Socket::isValid(newSocket));
if (!Socket::setup(newSocket))
return false;
if (Socket::isValid(socket))
Socket::close(socket);
socket = newSocket;
poll = Socket::preparePolling(socket);
return true;
}
ConnectionID id;
PlatformSocketType socket;
PollingDescriptor poll;
};
struct ClientConnection : public BaseConnection {
WTF_MAKE_STRUCT_TZONE_ALLOCATED(ClientConnection);
ClientConnection(ConnectionID id, PlatformSocketType socket, Client& client)
: BaseConnection(id)
, client { client }
{
setSocket(socket);
}
Client& client;
Vector<uint8_t> sendBuffer;
};
struct ListenerConnection : public BaseConnection {
static constexpr Seconds initialRetryInterval { 200_ms };
static constexpr Seconds maxRetryInterval { 5_s };
ListenerConnection(ConnectionID id, Listener& listener, const char* address, uint16_t port)
: BaseConnection(id)
, address { String::fromLatin1(address) }
, port { port }
, listener { listener }
{
listen();
}
bool listen()
{
ASSERT(!isListening());
if (nextRetryTime && *nextRetryTime > MonotonicTime::now())
return false;
if (auto newSocket = Socket::listen(address.utf8().data(), port)) {
if (setSocket(*newSocket)) {
retryInterval = initialRetryInterval;
return true;
}
Socket::close(*newSocket);
}
nextRetryTime = MonotonicTime::now() + retryInterval;
retryInterval = std::min<Seconds>(retryInterval * 2, maxRetryInterval);
return false;
}
bool isListening()
{
return Socket::isListening(socket);
}
String address;
uint16_t port;
Listener& listener;
std::optional<MonotonicTime> nextRetryTime;
Seconds retryInterval { initialRetryInterval };
};
ConnectionID generateConnectionID();
void recvIfEnabled(ConnectionID);
void sendIfEnabled(ConnectionID);
void workerThread();
void wakeupWorkerThread();
void acceptInetSocketIfEnabled(ConnectionID);
bool isListening(ConnectionID);
int pollingTimeout();
mutable Lock m_connectionsLock;
UncheckedKeyHashMap<ConnectionID, std::unique_ptr<ClientConnection>> m_clients WTF_GUARDED_BY_LOCK(m_connectionsLock);
UncheckedKeyHashMap<ConnectionID, std::unique_ptr<ListenerConnection>> m_listeners WTF_GUARDED_BY_LOCK(m_connectionsLock);
PlatformSocketType m_wakeupSendSocket { INVALID_SOCKET_VALUE };
PlatformSocketType m_wakeupReceiveSocket { INVALID_SOCKET_VALUE };
RefPtr<Thread> m_workerThread;
std::atomic<bool> m_shouldAbortWorkerThread { false };
};
} // namespace Inspector
#endif // ENABLE(REMOTE_INSPECTOR)
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