/*-
 * Copyright (c) 2010-2011 Monthadar Al Jaberi, TerraNet AB
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer,
 *    without modification.
 * 2. Redistributions in binary form must reproduce at minimum a disclaimer
 *    similar to the "NO WARRANTY" disclaimer below ("Disclaimer") and any
 *    redistribution must be conditioned upon including a substantially
 *    similar Disclaimer requirement for further binary redistribution.
 *
 * NO WARRANTY
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 * LIMITED TO, THE IMPLIED WARRANTIES OF NONINFRINGEMENT, MERCHANTIBILITY
 * AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
 * THE COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY,
 * OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER
 * IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
 * THE POSSIBILITY OF SUCH DAMAGES.
 */
#include <stdio.h>
#include <stdlib.h>
#include <fcntl.h>
#include <sys/ioctl.h>

/*
 * From the driver itself
 */
#include <plugins/visibility_ioctl.h>

static int dev = -1;

static void
toggle_medium(int op)
{
        if (ioctl(dev, VISIOCTLOPEN, &op) < 0) {
                printf("error opening/closing medium\n");
        }
}

static void
link_op(struct link *l)
{
        if (ioctl(dev, VISIOCTLLINK, l) < 0) {
                printf("error making a link operation\n");
        }
}

static void
usage(const char *argv[])
{
        printf("usage: %s [o | c | [ [a|d]  wtap_id1  wtap_id2]]\n",
            argv[0]);
}

int
main(int argc, const char* argv[])
{
        struct link l;
        char cmd;

        if (argc < 2) {
                usage(argv);
                exit(1);
        }

        dev = open("/dev/visctl", O_RDONLY);
                if (dev < 0) {
                        printf("error opening visctl cdev\n");
                        exit(1);
        }

        cmd = (char)*argv[1];

        switch (cmd) {
        case 'o':
                toggle_medium(1);
                break;
        case 'c':
                toggle_medium(0);
                break;
        case 'a':
                if (argc < 4) {
                        usage(argv);
                        exit(1);
                }
                l.op = 1;
                l.id1 = atoi(argv[2]);
                l.id2 = atoi(argv[3]);
                link_op(&l);
                break;
        case 'd':
                if (argc < 4) {
                        usage(argv);
                        exit(1);
                }
                l.op = 0;
                l.id1 = atoi(argv[2]);
                l.id2 = atoi(argv[3]);
                link_op(&l);
                break;
        default:
                printf("wtap ioctl: unknown command '%c'\n", *argv[1]);
                exit(1);
        }
        exit(0);
}