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//===-- GDBRemoteCommunicationServer.cpp ------------------------*- C++ -*-===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
#include <errno.h>
#include "lldb/Host/Config.h"
#include "GDBRemoteCommunicationServer.h"
// C Includes
// C++ Includes
#include <cstring>
// Project includes
#include "ProcessGDBRemoteLog.h"
#include "Utility/StringExtractorGDBRemote.h"
using namespace lldb;
using namespace lldb_private;
using namespace lldb_private::process_gdb_remote;
GDBRemoteCommunicationServer::GDBRemoteCommunicationServer(const char *comm_name,
const char *listener_name) :
GDBRemoteCommunication (comm_name, listener_name),
m_exit_now (false)
{
}
GDBRemoteCommunicationServer::~GDBRemoteCommunicationServer()
{
}
void GDBRemoteCommunicationServer::RegisterPacketHandler(
StringExtractorGDBRemote::ServerPacketType packet_type,
PacketHandler handler)
{
m_packet_handlers[packet_type] = std::move(handler);
}
GDBRemoteCommunication::PacketResult
GDBRemoteCommunicationServer::GetPacketAndSendResponse (uint32_t timeout_usec,
Error &error,
bool &interrupt,
bool &quit)
{
StringExtractorGDBRemote packet;
PacketResult packet_result = WaitForPacketWithTimeoutMicroSecondsNoLock (packet, timeout_usec, false);
if (packet_result == PacketResult::Success)
{
const StringExtractorGDBRemote::ServerPacketType packet_type = packet.GetServerPacketType ();
switch (packet_type)
{
case StringExtractorGDBRemote::eServerPacketType_nack:
case StringExtractorGDBRemote::eServerPacketType_ack:
break;
case StringExtractorGDBRemote::eServerPacketType_invalid:
error.SetErrorString("invalid packet");
quit = true;
break;
case StringExtractorGDBRemote::eServerPacketType_unimplemented:
packet_result = SendUnimplementedResponse (packet.GetStringRef().c_str());
break;
default:
auto handler_it = m_packet_handlers.find(packet_type);
if (handler_it == m_packet_handlers.end())
packet_result = SendUnimplementedResponse (packet.GetStringRef().c_str());
else
packet_result = handler_it->second (packet, error, interrupt, quit);
break;
}
}
else
{
if (!IsConnected())
{
error.SetErrorString("lost connection");
quit = true;
}
else
{
error.SetErrorString("timeout");
}
}
// Check if anything occurred that would force us to want to exit.
if (m_exit_now)
quit = true;
return packet_result;
}
GDBRemoteCommunication::PacketResult
GDBRemoteCommunicationServer::SendUnimplementedResponse (const char *)
{
// TODO: Log the packet we aren't handling...
return SendPacketNoLock ("", 0);
}
GDBRemoteCommunication::PacketResult
GDBRemoteCommunicationServer::SendErrorResponse (uint8_t err)
{
char packet[16];
int packet_len = ::snprintf (packet, sizeof(packet), "E%2.2x", err);
assert (packet_len < (int)sizeof(packet));
return SendPacketNoLock (packet, packet_len);
}
GDBRemoteCommunication::PacketResult
GDBRemoteCommunicationServer::SendIllFormedResponse (const StringExtractorGDBRemote &failed_packet, const char *message)
{
Log *log (ProcessGDBRemoteLog::GetLogIfAllCategoriesSet(GDBR_LOG_PACKETS));
if (log)
log->Printf ("GDBRemoteCommunicationServer::%s: ILLFORMED: '%s' (%s)", __FUNCTION__, failed_packet.GetStringRef ().c_str (), message ? message : "");
return SendErrorResponse (0x03);
}
GDBRemoteCommunication::PacketResult
GDBRemoteCommunicationServer::SendOKResponse ()
{
return SendPacketNoLock ("OK", 2);
}
bool
GDBRemoteCommunicationServer::HandshakeWithClient()
{
return GetAck() == PacketResult::Success;
}
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