Function receive_packet_with_callback

src/remote/client/interface.cpp:9221–9283

static void receive_packet_with_callback(rem_port* port, PACKET* packet)
{
/**************************************
 *
 *	r e c e i v e _ p a c k e t _ w i t h _ c a l l b a c k
 *
 **************************************
 *
 * Functional description
 *	If received packet is request from callback info from user,
 *	send requested info (or no data if callback is not set) and
 *	wait for next packet.
 *
 **************************************/

	UCharBuffer buf;
	for (;;)
	{
		if (!port->receive(packet))
		{
			Arg::Gds(isc_net_read_err).raise();
		}

		switch (packet->p_operation)
		{
		case op_crypt_key_callback:
			{
				P_CRYPT_CALLBACK* cc = &packet->p_cc;
				Cleanup ccData([&cc]() {
					cc->p_cc_data.cstr_length = 0;
					cc->p_cc_data.cstr_address = nullptr;
				});

				if (port->port_client_crypt_callback)
				{
					if (cc->p_cc_reply <= 0)
					{
						cc->p_cc_reply = 1;
					}
					UCHAR* reply = buf.getBuffer(cc->p_cc_reply);
					unsigned l = port->port_client_crypt_callback->callback(cc->p_cc_data.cstr_length,
						cc->p_cc_data.cstr_address, cc->p_cc_reply, reply);

					REMOTE_free_packet(port, packet, true);
					cc->p_cc_data.cstr_length = l;
					cc->p_cc_data.cstr_address = reply;
				}
				else
				{
					REMOTE_free_packet(port, packet, true);
					cc->p_cc_data.cstr_length = 0;
				}

				packet->p_operation = op_crypt_key_callback;
				cc->p_cc_reply = 0;
				port->send(packet);
			}
			break;