/* $NetBSD: wsconscfg.c,v 1.18 2017/05/04 16:26:10 sevan Exp $ */

/*
* Copyright (c) 1999
*      Matthias Drochner.  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.
* 2. Redistributions in binary form must reproduce the above copyright
*    notice, this list of conditions and the following disclaimer in the
*    documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, 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 DAMAGE.
*
*/

#include <sys/cdefs.h>
#include <stdio.h>
#include <stdlib.h>
#include <fcntl.h>
#include <unistd.h>
#include <sys/types.h>
#include <sys/ioctl.h>
#include <err.h>
#include <errno.h>

#include <dev/wscons/wsconsio.h>
#include <dev/wscons/wsdisplay_usl_io.h>

#define DEFDEV "/dev/ttyEcfg"

static void usage(void) __dead;

static void
usage(void)
{
       const char *p = getprogname();
       (void)fprintf(stderr,
            "Usage: %s [-e emul] [-f ctldev] [-t type] index\n"
            "\t%s -d [-F] [-f ctldev] index\n"
            "\t%s -g [-f ctldev]\n"
            "\t%s -k | -m [-d] [-f ctldev] [index]\n"
            "\t%s -s [-f ctldev] index\n", p, p, p, p, p);
       exit(1);
}

int
main(int argc, char **argv)
{
       const char *wsdev;
       int c, delete, kbd, idx, wsfd, swtch, get, mux;
       struct wsdisplay_addscreendata asd;
       struct wsdisplay_delscreendata dsd;
       struct wsmux_device wmd;

       setprogname(argv[0]);
       wsdev = DEFDEV;
       delete = 0;
       kbd = 0;
       mux = 0;
       swtch = 0;
       idx = -1;
       get = 0;
       asd.screentype = 0;
       asd.emul = 0;
       dsd.flags = 0;

       while ((c = getopt(argc, argv, "de:Ff:gkmst:")) != -1) {
               switch (c) {
               case 'd':
                       delete++;
                       break;
               case 'e':
                       asd.emul = optarg;
                       break;
               case 'F':
                       dsd.flags |= WSDISPLAY_DELSCR_FORCE;
                       break;
               case 'f':
                       wsdev = optarg;
                       break;
               case 'g':
                       get++;
                       break;
               case 'k':
                       kbd++;
                       break;
               case 'm':
                       mux++;
                       kbd++;
                       break;
               case 's':
                       swtch++;
                       break;
               case 't':
                       asd.screentype = optarg;
                       break;
               case '?':
               default:
                       usage();
                       break;
               }
       }
       argc -= optind;
       argv += optind;

       if (!get || argc != 0) {
               if ((kbd || swtch) ? (argc > 1) : (argc != 1))
                       usage();

               if (argc > 0 && sscanf(argv[0], "%d", &idx) != 1)
                       errx(1, "invalid index");
       }
       if ((wsfd = open(wsdev, get ? O_RDONLY : O_RDWR)) == -1)
               err(EXIT_FAILURE, "Cannot open `%s'", wsdev);


       if (swtch) {
               if (ioctl(wsfd, VT_ACTIVATE, idx) == -1)
                   err(EXIT_FAILURE, "Cannot switch to %d", idx);
       } else if (get) {
               if (ioctl(wsfd, VT_GETACTIVE, &idx) == -1)
                   err(EXIT_FAILURE, "Cannot get current screen");
               (void)printf("%d\n", idx);
       } else if (kbd) {
               wmd.type = mux ? WSMUX_MUX : WSMUX_KBD;
               wmd.idx = idx;
               if (delete) {
                       if (ioctl(wsfd, WSMUX_REMOVE_DEVICE, &wmd) == -1)
                               err(EXIT_FAILURE, "WSMUX_REMOVE_DEVICE");
               } else {
                       if (ioctl(wsfd, WSMUX_ADD_DEVICE, &wmd) == -1)
                               err(EXIT_FAILURE, "WSMUX_ADD_DEVICE");
               }
       } else if (delete) {
               dsd.idx = idx;
               if (ioctl(wsfd, WSDISPLAYIO_DELSCREEN, &dsd) == -1)
                       err(EXIT_FAILURE, "WSDISPLAYIO_DELSCREEN");
       } else {
               asd.idx = idx;
               if (ioctl(wsfd, WSDISPLAYIO_ADDSCREEN, &asd) == -1) {
                       if (errno == EBUSY)
                               errx(EXIT_FAILURE,
                                   "screen %d is already configured", idx);
                       else
                               err(EXIT_FAILURE, "WSDISPLAYIO_ADDSCREEN");
               }
       }

       return 0;
}