2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
4 * Copyright (c) 1997 Sandro Sigala, Brescia, Italy.
5 * Copyright (c) 1997 Chris Shenton
6 * Copyright (c) 1995 Søren Schmidt
9 * Redistribution and use in source and binary forms, with or without
10 * modification, are permitted provided that the following conditions
12 * 1. Redistributions of source code must retain the above copyright
13 * notice, this list of conditions and the following disclaimer
14 * in this position and unchanged.
15 * 2. Redistributions in binary form must reproduce the above copyright
16 * notice, this list of conditions and the following disclaimer in the
17 * documentation and/or other materials provided with the distribution.
19 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
20 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
21 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
22 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
23 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
24 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
25 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
26 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
27 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
28 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
33 #include <sys/param.h>
34 #include <sys/systm.h>
35 #include <sys/module.h>
36 #include <sys/malloc.h>
38 #include <sys/kernel.h>
39 #include <sys/sysctl.h>
40 #include <sys/consio.h>
43 #include <machine/pc/display.h>
45 #include <dev/fb/fbreg.h>
46 #include <dev/fb/splashreg.h>
47 #include <dev/syscons/syscons.h>
49 #define DAEMON_MAX_WIDTH 32
50 #define DAEMON_MAX_HEIGHT 19
52 static u_char *message;
53 static int messagelen;
57 #define ATTR(attr) (((attr) & attr_mask) << 8)
59 /* Who is the author of this ASCII pic? */
61 static u_char *daemon_pic[] = {
74 "<----|====O)))==) \\) /====",
75 "<----' `--' `.__,' \\",
78 " ______( (_ / \\______/",
84 static u_char *daemon_attr[] = {
97 "YYYYYYYYYYRRRRYYR RR RYYYY",
98 "YYYYYY RRRR RRRRRR R",
101 " CCCCCCR RR R RRRRRRRR",
108 * Reverse a graphics character, or return unaltered if no mirror;
109 * should do alphanumerics too, but I'm too lazy. <cshenton@it.hq.nasa.gov>
113 xflip_symbol(u_char symbol)
115 static const u_char lchars[] = "`'(){}[]\\/<>";
116 static const u_char rchars[] = "'`)(}{][/\\><";
119 for (pos = 0; lchars[pos] != '\0'; pos++)
120 if (lchars[pos] == symbol)
127 clear_daemon(sc_softc_t *sc, int xpos, int ypos, int dxdir, int xoff, int yoff,
134 for (y = yoff; y < ylen; y++) {
135 sc_vtb_erase(&sc->cur_scp->scr,
136 (ypos + y)*sc->cur_scp->xsize + xpos + xoff,
138 sc->scr_map[0x20], ATTR(FG_LIGHTGREY | BG_BLACK));
143 draw_daemon(sc_softc_t *sc, int xpos, int ypos, int dxdir, int xoff, int yoff,
150 for (y = yoff; y < ylen; y++) {
154 px = DAEMON_MAX_WIDTH - xlen;
155 if (px >= strlen(daemon_pic[y]))
157 for (x = xoff; (x < xlen) && (daemon_pic[y][px] != '\0'); x++, px++) {
158 switch (daemon_attr[y][px]) {
159 case 'R': attr = FG_LIGHTRED | BG_BLACK; break;
160 case 'Y': attr = FG_YELLOW | BG_BLACK; break;
161 case 'B': attr = FG_LIGHTBLUE | BG_BLACK; break;
162 case 'W': attr = FG_LIGHTGREY | BG_BLACK; break;
163 case 'C': attr = FG_CYAN | BG_BLACK; break;
164 default: attr = FG_WHITE | BG_BLACK; break;
166 if (dxdir < 0) { /* Moving left */
167 sc_vtb_putc(&sc->cur_scp->scr,
168 (ypos + y)*sc->cur_scp->xsize
170 sc->scr_map[daemon_pic[y][px]],
172 } else { /* Moving right */
173 sc_vtb_putc(&sc->cur_scp->scr,
174 (ypos + y)*sc->cur_scp->xsize
175 + xpos + DAEMON_MAX_WIDTH
177 sc->scr_map[xflip_symbol(daemon_pic[y][px])],
185 clear_string(sc_softc_t *sc, int xpos, int ypos, int xoff, char *s, int len)
189 sc_vtb_erase(&sc->cur_scp->scr,
190 ypos*sc->cur_scp->xsize + xpos + xoff, len - xoff,
191 sc->scr_map[0x20], ATTR(FG_LIGHTGREY | BG_BLACK));
195 draw_string(sc_softc_t *sc, int xpos, int ypos, int xoff, u_char *s, int len)
199 for (x = xoff; x < len; x++)
200 sc_vtb_putc(&sc->cur_scp->scr,
201 ypos*sc->cur_scp->xsize + xpos + x,
202 sc->scr_map[s[x]], ATTR(FG_LIGHTGREEN | BG_BLACK));
206 daemon_saver(video_adapter_t *adp, int blank)
208 static int txpos = 10, typos = 10;
209 static int txdir = -1, tydir = -1;
210 static int dxpos = 0, dypos = 0;
211 static int dxdir = 1, dydir = 1;
212 static int moved_daemon = 0;
213 static int xoff, yoff, toff;
214 static int xlen, ylen, tlen;
219 sc = sc_find_softc(adp, NULL);
225 if (adp->va_info.vi_flags & V_INFO_GRAPHICS)
228 /* clear the screen and set the border color */
229 sc_vtb_clear(&scp->scr, sc->scr_map[0x20],
230 ATTR(FG_LIGHTGREY | BG_BLACK));
231 vidd_set_hw_cursor(adp, -1, -1);
232 sc_set_border(scp, 0);
233 xlen = ylen = tlen = 0;
239 clear_daemon(sc, dxpos, dypos, dxdir, xoff, yoff, xlen, ylen);
240 clear_string(sc, txpos, typos, toff, message, tlen);
242 if (++moved_daemon) {
244 * The daemon picture may be off the screen, if
245 * screen size is chagened while the screen
246 * saver is inactive. Make sure the origin of
247 * the picture is between min and max.
249 if (scp->xsize <= DAEMON_MAX_WIDTH) {
251 * If the screen width is too narrow, we
252 * allow part of the picture go off
253 * the screen so that the daemon won't
256 min = scp->xsize - DAEMON_MAX_WIDTH - 10;
260 max = scp->xsize - DAEMON_MAX_WIDTH;
265 } else if (dxpos >= max) {
270 if (scp->ysize <= DAEMON_MAX_HEIGHT) {
271 min = scp->ysize - DAEMON_MAX_HEIGHT - 10;
275 max = scp->ysize - DAEMON_MAX_HEIGHT;
280 } else if (dypos >= max) {
286 dxpos += dxdir; dypos += dydir;
288 /* clip the picture */
290 xlen = DAEMON_MAX_WIDTH;
291 if (dxpos + xlen <= 0)
295 if (dxpos >= scp->xsize)
297 else if (dxpos + xlen > scp->xsize)
298 xlen = scp->xsize - dxpos;
300 ylen = DAEMON_MAX_HEIGHT;
301 if (dypos + ylen <= 0)
305 if (dypos >= scp->ysize)
307 else if (dypos + ylen > scp->ysize)
308 ylen = scp->ysize - dypos;
311 if (scp->xsize <= messagelen) {
312 min = scp->xsize - messagelen - 10;
316 max = scp->xsize - messagelen;
321 } else if (txpos >= max) {
328 } else if (typos >= scp->ysize - 1) {
329 typos = scp->ysize - 1;
332 txpos += txdir; typos += tydir;
336 if (txpos + tlen <= 0)
340 if (txpos >= scp->xsize)
342 else if (txpos + tlen > scp->xsize)
343 tlen = scp->xsize - txpos;
345 draw_daemon(sc, dxpos, dypos, dxdir, xoff, yoff, xlen, ylen);
346 draw_string(sc, txpos, typos, toff, message, tlen);
354 daemon_init(video_adapter_t *adp)
358 mtx_lock(&prison0.pr_mtx);
360 hostlen = strlen(prison0.pr_hostname);
361 mtx_unlock(&prison0.pr_mtx);
363 messagelen = hostlen + 3 + strlen(ostype) + 1 +
365 message = malloc(messagelen + 1, M_DEVBUF, M_WAITOK);
366 mtx_lock(&prison0.pr_mtx);
367 if (hostlen < strlen(prison0.pr_hostname)) {
368 free(message, M_DEVBUF);
373 sprintf(message, "%s - %s %s", prison0.pr_hostname, ostype, osrelease);
374 mtx_unlock(&prison0.pr_mtx);
382 daemon_term(video_adapter_t *adp)
384 free(message, M_DEVBUF);
388 static scrn_saver_t daemon_module = {
389 "daemon_saver", daemon_init, daemon_term, daemon_saver, NULL,
392 SAVER_MODULE(daemon_saver, daemon_module);