C++ StreamGDBRemote::PutChar方法代码示例

GDBRemoteCommunication::PacketResult
GDBRemoteCommunicationServerCommon::Handle_qModuleInfo(
    StringExtractorGDBRemote &packet) {
  packet.SetFilePos(::strlen("qModuleInfo:"));

  std::string module_path;
  packet.GetHexByteStringTerminatedBy(module_path, ';');
  if (module_path.empty())
    return SendErrorResponse(1);

  if (packet.GetChar() != ';')
    return SendErrorResponse(2);

  std::string triple;
  packet.GetHexByteString(triple);

  ModuleSpec matched_module_spec = GetModuleInfo(module_path, triple);
  if (!matched_module_spec.GetFileSpec())
    return SendErrorResponse(3);

  const auto file_offset = matched_module_spec.GetObjectOffset();
  const auto file_size = matched_module_spec.GetObjectSize();
  const auto uuid_str = matched_module_spec.GetUUID().GetAsString("");

  StreamGDBRemote response;

  if (uuid_str.empty()) {
    std::string md5_hash;
    if (!FileSystem::CalculateMD5AsString(matched_module_spec.GetFileSpec(),
                                          file_offset, file_size, md5_hash))
      return SendErrorResponse(5);
    response.PutCString("md5:");
    response.PutCStringAsRawHex8(md5_hash.c_str());
  } else {
    response.PutCString("uuid:");
    response.PutCStringAsRawHex8(uuid_str.c_str());
  }
  response.PutChar(';');

  const auto &module_arch = matched_module_spec.GetArchitecture();
  response.PutCString("triple:");
  response.PutCStringAsRawHex8(module_arch.GetTriple().getTriple().c_str());
  response.PutChar(';');

  response.PutCString("file_path:");
  response.PutCStringAsRawHex8(matched_module_spec.GetFileSpec().GetCString());
  response.PutChar(';');
  response.PutCString("file_offset:");
  response.PutHex64(file_offset);
  response.PutChar(';');
  response.PutCString("file_size:");
  response.PutHex64(file_size);
  response.PutChar(';');

  return SendPacketNoLock(response.GetString());
}

GDBRemoteCommunication::PacketResult
GDBRemoteCommunicationServerCommon::Handle_vFile_pWrite(
    StringExtractorGDBRemote &packet) {
#ifdef _WIN32
  return SendUnimplementedResponse("GDBRemoteCommunicationServerCommon::Handle_"
                                   "vFile_pWrite() unimplemented");
#else
  packet.SetFilePos(::strlen("vFile:pwrite:"));

  StreamGDBRemote response;
  response.PutChar('F');

  int fd = packet.GetU32(UINT32_MAX);
  if (packet.GetChar() == ',') {
    off_t offset = packet.GetU64(UINT32_MAX);
    if (packet.GetChar() == ',') {
      std::string buffer;
      if (packet.GetEscapedBinaryData(buffer)) {
        const ssize_t bytes_written =
            ::pwrite(fd, buffer.data(), buffer.size(), offset);
        const int save_errno = bytes_written == -1 ? errno : 0;
        response.Printf("%zi", bytes_written);
        if (save_errno)
          response.Printf(",%i", save_errno);
      } else {
        response.Printf("-1,%i", EINVAL);
      }
      return SendPacketNoLock(response.GetString());
    }
  }
  return SendErrorResponse(27);
#endif
}

GDBRemoteCommunication::PacketResult
GDBRemoteCommunicationServerPlatform::Handle_qLaunchGDBServer (StringExtractorGDBRemote &packet)
{
#ifdef _WIN32
    return SendErrorResponse(9);
#else
    // Spawn a local debugserver as a platform so we can then attach or launch
    // a process...

    Log *log(GetLogIfAnyCategoriesSet(LIBLLDB_LOG_PLATFORM));
    if (log)
        log->Printf ("GDBRemoteCommunicationServerPlatform::%s() called", __FUNCTION__);

    ConnectionFileDescriptor file_conn;
    std::string hostname;
    packet.SetFilePos(::strlen ("qLaunchGDBServer;"));
    std::string name;
    std::string value;
    uint16_t port = UINT16_MAX;
    while (packet.GetNameColonValue(name, value))
    {
        if (name.compare ("host") == 0)
            hostname.swap(value);
        else if (name.compare ("port") == 0)
            port = StringConvert::ToUInt32(value.c_str(), 0, 0);
    }

    lldb::pid_t debugserver_pid = LLDB_INVALID_PROCESS_ID;
    std::string socket_name;
    Error error = LaunchGDBServer(Args(), hostname, debugserver_pid, port, socket_name);
    if (error.Fail())
    {
        if (log)
            log->Printf("GDBRemoteCommunicationServerPlatform::%s() debugserver launch failed: %s", __FUNCTION__, error.AsCString ());
        return SendErrorResponse(9);
    }

    if (log)
        log->Printf ("GDBRemoteCommunicationServerPlatform::%s() debugserver launched successfully as pid %" PRIu64, __FUNCTION__, debugserver_pid);

    StreamGDBRemote response;
    response.Printf("pid:%" PRIu64 ";port:%u;", debugserver_pid, port + m_port_offset);
    if (!socket_name.empty())
    {
        response.PutCString("socket_name:");
        response.PutCStringAsRawHex8(socket_name.c_str());
        response.PutChar(';');
    }

    PacketResult packet_result = SendPacketNoLock(response.GetData(), response.GetSize());
    if (packet_result != PacketResult::Success)
    {
        if (debugserver_pid != LLDB_INVALID_PROCESS_ID)
            ::kill (debugserver_pid, SIGINT);
    }
    return packet_result;
#endif
}

GDBRemoteCommunication::PacketResult
GDBRemoteCommunicationServer::Handle_qPlatform_shell (StringExtractorGDBRemote &packet)
{
    packet.SetFilePos(::strlen("qPlatform_shell:"));
    std::string path;
    std::string working_dir;
    packet.GetHexByteStringTerminatedBy(path,',');
    if (!path.empty())
    {
        if (packet.GetChar() == ',')
        {
            // FIXME: add timeout to qPlatform_shell packet
            // uint32_t timeout = packet.GetHexMaxU32(false, 32);
            uint32_t timeout = 10;
            if (packet.GetChar() == ',')
                packet.GetHexByteString(working_dir);
            int status, signo;
            std::string output;
            Error err = Host::RunShellCommand(path.c_str(),
                                              working_dir.empty() ? NULL : working_dir.c_str(),
                                              &status, &signo, &output, timeout);
            StreamGDBRemote response;
            if (err.Fail())
            {
                response.PutCString("F,");
                response.PutHex32(UINT32_MAX);
            }
            else
            {
                response.PutCString("F,");
                response.PutHex32(status);
                response.PutChar(',');
                response.PutHex32(signo);
                response.PutChar(',');
                response.PutEscapedBytes(output.c_str(), output.size());
            }
            return SendPacketNoLock(response.GetData(), response.GetSize());
        }
    }
    return SendErrorResponse(24);
}

GDBRemoteCommunication::PacketResult
GDBRemoteCommunicationServer::Handle_vFile_pRead (StringExtractorGDBRemote &packet)
{
#ifdef _WIN32
    // Not implemented on Windows
    return SendUnimplementedResponse("GDBRemoteCommunicationServer::Handle_vFile_pRead() unimplemented");
#else
    StreamGDBRemote response;
    packet.SetFilePos(::strlen("vFile:pread:"));
    int fd = packet.GetS32(-1);
    if (packet.GetChar() == ',')
    {
        uint64_t count = packet.GetU64(UINT64_MAX);
        if (packet.GetChar() == ',')
        {
            uint64_t offset = packet.GetU64(UINT32_MAX);
            if (count == UINT64_MAX)
            {
                response.Printf("F-1:%i", EINVAL);
                return SendPacketNoLock(response.GetData(), response.GetSize());
            }
            
            std::string buffer(count, 0);
            const ssize_t bytes_read = ::pread (fd, &buffer[0], buffer.size(), offset);
            const int save_errno = bytes_read == -1 ? errno : 0;
            response.PutChar('F');
            response.Printf("%zi", bytes_read);
            if (save_errno)
                response.Printf(",%i", save_errno);
            else
            {
                response.PutChar(';');
                response.PutEscapedBytes(&buffer[0], bytes_read);
            }
            return SendPacketNoLock(response.GetData(), response.GetSize());
        }
    }
    return SendErrorResponse(21);

#endif
}