view rvinterf/lowlevel/clientcmd.c @ 407:19e5a3e2f9c0

fcup-settime: moved time() retrieval a little closer to the output A fundamental problem with all simple time transfer tools is that there is always some delay between the time retrieval on the source system and that transmitted time being set on the destination, and the resulting time on the destination system is off by that delay amount. This delay cannot be fully eliminated when working in a simple environment like ours, but we should make our best effort to minimize it. In the present case, moving the atinterf_init() call before the time() retrieval should make a teensy-tiny improvement.
author Mychaela Falconia <falcon@freecalypso.org>
date Sat, 11 Aug 2018 21:52:17 +0000
parents e7502631a0f9
children
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line source

/*
 * This rvinterf module implements the handling of client commands.
 */

#include <sys/types.h>
#include <stdio.h>
#include <string.h>
#include <strings.h>
#include <stdlib.h>
#include <unistd.h>
#include "../include/pktmux.h"
#include "../include/limits.h"
#include "../include/localsock.h"
#include "client.h"

void
process_msg_from_client(cli)
	struct client *cli;
{
	int c;

	switch (cli->rx_buf[0]) {
	case CLI2RVI_WANT_RVTRACE:
		if (cli->rx_msglen != 9) {
			send_local_msg_to_client(cli, "-Bad command length");
			return;
		}
		c = cli->int_rvt_count;
		if (c >= MAX_RVT_INTEREST) {
			send_local_msg_to_client(cli,
					"-Error: too many RVT interests");
			return;
		}
		cli->int_rvt_mask[c] = cli->rx_buf[1] << 24 |
					cli->rx_buf[2] << 16 |
					cli->rx_buf[3] << 8 | cli->rx_buf[4];
		cli->int_rvt_match[c] = cli->rx_buf[5] << 24 |
					cli->rx_buf[6] << 16 |
					cli->rx_buf[7] << 8 | cli->rx_buf[8];
		cli->int_rvt_count++;
		send_local_msg_to_client(cli, "+OK");
		return;
	case CLI2RVI_WANT_MUXPROTO:
		if (cli->rx_msglen != 2) {
			send_local_msg_to_client(cli, "-Bad command length");
			return;
		}
		if (cli->rx_buf[1] < 0x12 || cli->rx_buf[1] > 0x1D) {
			send_local_msg_to_client(cli,
					"-Unsupported protocol MUX value");
			return;
		}
		cli->int_proto[cli->rx_buf[1] - 0x12] = 1;
		send_local_msg_to_client(cli, "+OK");
		return;
	case CLI2RVI_DROP_MUXPROTO:
		if (cli->rx_msglen != 2) {
			send_local_msg_to_client(cli, "-Bad command length");
			return;
		}
		if (cli->rx_buf[1] < 0x12 || cli->rx_buf[1] > 0x1D) {
			send_local_msg_to_client(cli,
					"-Unsupported protocol MUX value");
			return;
		}
		cli->int_proto[cli->rx_buf[1] - 0x12] = 0;
		send_local_msg_to_client(cli, "+OK");
		return;
	case CLI2RVI_RESET_PACKET_RX:
		cli->int_rvt_count = 0;
		bzero(cli->int_proto, sizeof(cli->int_proto));
		send_local_msg_to_client(cli, "+OK");
		return;
	case CLI2RVI_PKT_TO_TARGET:
		c = cli->rx_msglen - 1;
		if (c < 1 || c > MAX_PKT_TO_TARGET) {
			send_local_msg_to_client(cli,
						 "-Invalid Tx packet length");
			return;
		}
		send_pkt_to_target(cli->rx_buf + 1, c);
		log_sent_packet(cli->rx_buf + 1, c);
		return;
	case CLI2RVI_RAWBYTES_TO_TARGET:
		/* To be implemented */
	default:
		send_local_msg_to_client(cli, "-Unimplemented command");
	}
}