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/*-
* Copyright (c) 1997 Sandro Sigala, Brescia, Italy.
* Copyright (c) 1997 Chris Shenton
* Copyright (c) 1995 S ren Schmidt
* 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
* in this position and unchanged.
* 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.
*
* $Id: daemon_saver.c,v 1.5 1997/06/24 12:43:18 yokota Exp $
*/
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/exec.h>
#include <sys/sysent.h>
#include <sys/lkm.h>
#include <sys/malloc.h>
#include <sys/kernel.h>
#include <sys/sysctl.h>
#include <machine/md_var.h>
#include <i386/include/pc/display.h>
#include <saver.h>
#define CONSOLE_VECT(x, y) \
*((u_short*)(Crtat + (y)*cur_console->xsize + (x)))
#define DAEMON_MAX_WIDTH 32
#define DAEMON_MAX_HEIGHT 19
MOD_MISC(daemon_saver);
static char *message;
static int messagelen;
/* Who is the author of this ASCII pic? */
static char *daemon_pic[] = {
" , ,",
" /( )`",
" \\ \\___ / |",
" /- _ `-/ '",
" (/\\/ \\ \\ /\\",
" / / | ` \\",
" O O ) / |",
" `-^--'`< '",
" (_.) _ ) /",
" `.___/` /",
" `-----' /",
"<----. __ / __ \\",
"<----|====O)))==) \\) /====",
"<----' `--' `.__,' \\",
" | |",
" \\ / /\\",
" ______( (_ / \\______/",
" ,' ,-----' |",
" `--{__________)",
NULL
};
static char *daemon_attr[] = {
" R R",
" RR RR",
" R RRRR R R",
" RR W RRR R",
" RWWW W R RR",
" W W W R R",
" B B W R R",
" WWWWWWRR R",
" RRRR R R R",
" RRRRRRR R",
" RRRRRRR R",
"YYYYYY RR R RR R",
"YYYYYYYYYYRRRRYYR RR RYYYY",
"YYYYYY RRRR RRRRRR R",
" R R",
" R R RR",
" CCCCCCR RR R RRRRRRRR",
" CC CCCCCCC C",
" CCCCCCCCCCCCCCC",
NULL
};
/*
* Reverse a graphics character, or return unaltered if no mirror;
* should do alphanumerics too, but I'm too lazy. <cshenton@it.hq.nasa.gov>
*/
static char
xflip_symbol(char symbol)
{
static const char lchars[] = "`'(){}[]\\/<>";
static const char rchars[] = "'`)(}{][/\\><";
int pos;
for (pos = 0; lchars[pos] != '\0'; pos++)
if (lchars[pos] == symbol)
return rchars[pos];
return symbol;
}
static void
draw_daemon(int xpos, int ypos, int dxdir)
{
int x, y;
int attr;
for (y = 0; daemon_pic[y] != NULL; y++)
for (x = 0; daemon_pic[y][x] != '\0'; x++) {
switch (daemon_attr[y][x]) {
case 'R': attr = (FG_LIGHTRED|BG_BLACK)<<8; break;
case 'Y': attr = (FG_YELLOW|BG_BLACK)<<8; break;
case 'B': attr = (FG_LIGHTBLUE|BG_BLACK)<<8; break;
case 'W': attr = (FG_LIGHTGREY|BG_BLACK)<<8; break;
case 'C': attr = (FG_CYAN|BG_BLACK)<<8; break;
default: attr = (FG_WHITE|BG_BLACK)<<8; break;
}
if (dxdir < 0) { /* Moving left */
CONSOLE_VECT(xpos + x, ypos + y) =
scr_map[daemon_pic[y][x]]|attr;
} else { /* Moving right */
CONSOLE_VECT(xpos + DAEMON_MAX_WIDTH - x - 1, ypos + y) =
scr_map[xflip_symbol(daemon_pic[y][x])]|attr;
}
}
}
static void
draw_string(int xpos, int ypos, char *s, int len)
{
int x;
for (x = 0; x < len; x++)
CONSOLE_VECT(xpos + x, ypos) =
scr_map[s[x]]|(FG_LIGHTGREEN|BG_BLACK)<<8;
}
static void
daemon_saver(int blank)
{
static int txpos = 10, typos = 10;
static int txdir = -1, tydir = -1;
static int dxpos = 0, dypos = 0;
static int dxdir = 1, dydir = 1;
static int moved_daemon = 0;
scr_stat *scp = cur_console;
if (blank) {
if (scrn_blanked++ < 2)
return;
fillw((FG_LIGHTGREY|BG_BLACK)<<8|scr_map[0x20], Crtat,
scp->xsize * scp->ysize);
set_border(0);
scrn_blanked = 1;
if (++moved_daemon) {
if (dxdir > 0) {
if (dxpos == scp->xsize - DAEMON_MAX_WIDTH)
dxdir = -1;
} else {
if (dxpos == 0) dxdir = 1;
}
if (dydir > 0) {
if (dypos == scp->ysize - DAEMON_MAX_HEIGHT)
dydir = -1;
} else {
if (dypos == 0) dydir = 1;
}
moved_daemon = -1;
dxpos += dxdir; dypos += dydir;
}
if (txdir > 0) {
if (txpos == scp->xsize - messagelen)
txdir = -1;
} else {
if (txpos == 0) txdir = 1;
}
if (tydir > 0) {
if (typos == scp->ysize - 1)
tydir = -1;
} else {
if (typos == 0) tydir = 1;
}
txpos += txdir; typos += tydir;
draw_daemon(dxpos, dypos, dxdir);
draw_string(txpos, typos, (char *)message, messagelen);
} else {
if (scrn_blanked > 0) {
set_border(scp->border);
scrn_blanked = 0;
}
}
}
static int
daemon_saver_load(struct lkm_table *lkmtp, int cmd)
{
int err;
messagelen = strlen(hostname) + 3 + strlen(ostype) + 1 +
strlen(osrelease);
message = malloc(messagelen + 1, M_DEVBUF, M_WAITOK);
sprintf(message, "%s - %s %s", hostname, ostype, osrelease);
err = add_scrn_saver(daemon_saver);
if (err != 0)
free(message, M_DEVBUF);
return err;
}
static int
daemon_saver_unload(struct lkm_table *lkmtp, int cmd)
{
int err;
err = remove_scrn_saver(daemon_saver);
if (err == 0)
free(message, M_DEVBUF);
return err;
}
int
daemon_saver_mod(struct lkm_table *lkmtp, int cmd, int ver)
{
MOD_DISPATCH(daemon_saver, lkmtp, cmd, ver,
daemon_saver_load, daemon_saver_unload, lkm_nullcmd);
}
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