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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(
Timeout<std::micro> timeout, Error &error, bool &interrupt, bool &quit) {
StringExtractorGDBRemote packet;
PacketResult packet_result = WaitForPacketNoLock(packet, timeout, 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("");
}
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(llvm::StringRef(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");
}
bool GDBRemoteCommunicationServer::HandshakeWithClient() {
return GetAck() == PacketResult::Success;
}
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