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https://git.hardenedbsd.org/hardenedbsd/HardenedBSD.git
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af01fff37b
them as ints. Among other bugs, doing so at best caused benign overflow followed by fatal sign extension on machines with 32-bit ints and 64-bit longs.
455 lines
9.5 KiB
C
455 lines
9.5 KiB
C
/*-
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* Copyright (c) 1994-1996 Søren Schmidt
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer,
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* in this position and unchanged.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. The name of the author may not be used to endorse or promote products
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* derived from this software withough specific prior written permission
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifndef lint
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static const char rcsid[] =
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"$Id: vidcontrol.c,v 1.18 1997/10/27 07:52:10 charnier Exp $";
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#endif /* not lint */
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#include <ctype.h>
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#include <err.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <unistd.h>
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#include <machine/console.h>
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#include <sys/errno.h>
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#include "path.h"
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#include "decode.h"
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char legal_colors[16][16] = {
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"black", "blue", "green", "cyan",
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"red", "magenta", "brown", "white",
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"grey", "lightblue", "lightgreen", "lightcyan",
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"lightred", "lightmagenta", "yellow", "lightwhite"
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};
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int hex = 0;
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int number;
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char letter;
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struct vid_info info;
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static void
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usage()
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{
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fprintf(stderr, "%s\n%s\n%s\n",
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"usage: vidcontrol [-r fg bg] [-b color] [-c appearance] [-d] [-l scrmap]",
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" [-L] [-m on|off] [-f size file] [-s number] [-t N|off]",
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" [-x] [mode] [fgcol [bgcol]] [show]");
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exit(1);
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}
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char *
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nextarg(int ac, char **av, int *indp, int oc)
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{
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if (*indp < ac)
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return(av[(*indp)++]);
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errx(1, "option requires two arguments -- %c", oc);
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return("");
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}
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char *
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mkfullname(const char *s1, const char *s2, const char *s3)
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{
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static char *buf = NULL;
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static int bufl = 0;
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int f;
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f = strlen(s1) + strlen(s2) + strlen(s3) + 1;
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if (f > bufl)
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if (buf)
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buf = (char *)realloc(buf, f);
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else
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buf = (char *)malloc(f);
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if (!buf) {
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bufl = 0;
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return(NULL);
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}
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bufl = f;
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strcpy(buf, s1);
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strcat(buf, s2);
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strcat(buf, s3);
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return(buf);
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}
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void
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load_scrnmap(char *filename)
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{
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FILE *fd = 0;
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int i, size;
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char *name;
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scrmap_t scrnmap;
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char *prefix[] = {"", "", SCRNMAP_PATH, SCRNMAP_PATH, NULL};
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char *postfix[] = {"", ".scm", "", ".scm"};
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for (i=0; prefix[i]; i++) {
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name = mkfullname(prefix[i], filename, postfix[i]);
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fd = fopen(name, "r");
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if (fd)
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break;
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}
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if (fd == NULL) {
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warn("screenmap file not found");
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return;
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}
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size = sizeof(scrnmap);
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if (decode(fd, (char *)&scrnmap) != size) {
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rewind(fd);
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if (fread(&scrnmap, 1, size, fd) != size) {
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warnx("bad screenmap file");
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fclose(fd);
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return;
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}
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}
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if (ioctl(0, PIO_SCRNMAP, &scrnmap) < 0)
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warn("can't load screenmap");
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fclose(fd);
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}
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void
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load_default_scrnmap()
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{
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scrmap_t scrnmap;
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int i;
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for (i=0; i<256; i++)
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*((char*)&scrnmap + i) = i;
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if (ioctl(0, PIO_SCRNMAP, &scrnmap) < 0)
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warn("can't load default screenmap");
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}
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void
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print_scrnmap()
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{
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unsigned char map[256];
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int i;
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if (ioctl(0, GIO_SCRNMAP, &map) < 0) {
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warn("getting screenmap");
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return;
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}
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for (i=0; i<sizeof(map); i++) {
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if (i > 0 && i % 16 == 0)
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fprintf(stdout, "\n");
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if (hex)
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fprintf(stdout, " %02x", map[i]);
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else
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fprintf(stdout, " %03d", map[i]);
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}
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fprintf(stdout, "\n");
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}
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void
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load_font(char *type, char *filename)
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{
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FILE *fd = 0;
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int i, size;
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unsigned long io;
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char *name, *fontmap;
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char *prefix[] = {"", "", FONT_PATH, FONT_PATH, NULL};
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char *postfix[] = {"", ".fnt", "", ".fnt"};
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for (i=0; prefix[i]; i++) {
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name = mkfullname(prefix[i], filename, postfix[i]);
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fd = fopen(name, "r");
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if (fd)
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break;
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}
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if (fd == NULL) {
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warn("font file not found");
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return;
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}
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if (!strcmp(type, "8x8")) {
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size = 8*256;
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io = PIO_FONT8x8;
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}
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else if (!strcmp(type, "8x14")) {
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size = 14*256;
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io = PIO_FONT8x14;
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}
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else if (!strcmp(type, "8x16")) {
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size = 16*256;
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io = PIO_FONT8x16;
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}
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else {
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warn("bad font size specification");
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fclose(fd);
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return;
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}
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fontmap = (char*) malloc(size);
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if (decode(fd, fontmap) != size) {
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rewind(fd);
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if (fread(fontmap, 1, size, fd) != size) {
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warnx("bad font file");
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fclose(fd);
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free(fontmap);
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return;
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}
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}
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if (ioctl(0, io, fontmap) < 0)
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warn("can't load font");
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fclose(fd);
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free(fontmap);
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}
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void
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set_screensaver_timeout(char *arg)
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{
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int nsec;
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if (!strcmp(arg, "off"))
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nsec = 0;
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else {
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nsec = atoi(arg);
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if ((*arg == '\0') || (nsec < 1)) {
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warnx("argument must be a positive number");
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return;
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}
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}
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if (ioctl(0, CONS_BLANKTIME, &nsec) == -1)
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warn("setting screensaver period");
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}
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void
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set_cursor_type(char *appearence)
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{
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int type;
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if (!strcmp(appearence, "normal"))
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type = 0;
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else if (!strcmp(appearence, "blink"))
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type = 1;
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else if (!strcmp(appearence, "destructive"))
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type = 3;
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else {
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warnx("argument to -c must be normal, blink or destructive");
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return;
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}
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ioctl(0, CONS_CURSORTYPE, &type);
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}
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void
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video_mode(int argc, char **argv, int *index)
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{
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unsigned long mode;
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if (*index < argc) {
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if (!strcmp(argv[*index], "VGA_40x25"))
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mode = SW_VGA_C40x25;
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else if (!strcmp(argv[*index], "VGA_80x25"))
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mode = SW_VGA_C80x25;
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else if (!strcmp(argv[*index], "VGA_80x30"))
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mode = SW_VGA_C80x30;
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else if (!strcmp(argv[*index], "VGA_80x50"))
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mode = SW_VGA_C80x50;
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else if (!strcmp(argv[*index], "VGA_80x60"))
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mode = SW_VGA_C80x60;
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else if (!strcmp(argv[*index], "VGA_320x200"))
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mode = SW_VGA_CG320;
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else if (!strcmp(argv[*index], "EGA_80x25"))
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mode = SW_ENH_C80x25;
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else if (!strcmp(argv[*index], "EGA_80x43"))
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mode = SW_ENH_C80x43;
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else
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return;
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if (ioctl(0, mode, NULL) < 0)
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warn("cannot set videomode");
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(*index)++;
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}
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return;
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}
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int
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get_color_number(char *color)
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{
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int i;
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for (i=0; i<16; i++)
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if (!strcmp(color, legal_colors[i]))
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return i;
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return -1;
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}
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void
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set_normal_colors(int argc, char **argv, int *index)
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{
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int color;
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if (*index < argc && (color = get_color_number(argv[*index])) != -1) {
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(*index)++;
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fprintf(stderr, "[=%dF", color);
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if (*index < argc
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&& (color = get_color_number(argv[*index])) != -1
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&& color < 8) {
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(*index)++;
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fprintf(stderr, "[=%dG", color);
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}
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}
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}
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void
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set_reverse_colors(int argc, char **argv, int *index)
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{
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int color;
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if ((color = get_color_number(argv[*(index)-1])) != -1) {
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fprintf(stderr, "[=%dH", color);
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if (*index < argc
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&& (color = get_color_number(argv[*index])) != -1
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&& color < 8) {
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(*index)++;
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fprintf(stderr, "[=%dI", color);
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}
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}
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}
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void
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set_console(char *arg)
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{
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int n;
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if( !arg || strspn(arg,"0123456789") != strlen(arg)) {
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warnx("bad console number");
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return;
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}
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n = atoi(arg);
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if (n < 1 || n > 12) {
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warnx("console number out of range");
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} else if (ioctl(0,VT_ACTIVATE,(char *)n) == -1)
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warn("ioctl(VT_ACTIVATE)");
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}
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void
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set_border_color(char *arg)
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{
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int color;
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if ((color = get_color_number(arg)) != -1) {
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fprintf(stderr, "[=%dA", color);
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}
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else
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usage();
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}
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void
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set_mouse(char *arg)
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{
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struct mouse_info mouse;
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if (!strcmp(arg, "on"))
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mouse.operation = MOUSE_SHOW;
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else if (!strcmp(arg, "off"))
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mouse.operation = MOUSE_HIDE;
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else {
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warnx("argument to -m must either on or off");
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return;
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}
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ioctl(0, CONS_MOUSECTL, &mouse);
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}
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void
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test_frame()
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{
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int i;
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fprintf(stdout, "[=0G\n\n");
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for (i=0; i<8; i++) {
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fprintf(stdout, "[=15F[=0G %2d [=%dF%-16s"
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"[=15F[=0G %2d [=%dF%-16s "
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"[=15F %2d [=%dGBACKGROUND[=0G\n",
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i, i, legal_colors[i], i+8, i+8,
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legal_colors[i+8], i, i);
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}
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fprintf(stdout, "[=%dF[=%dG[=%dH[=%dI\n",
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info.mv_norm.fore, info.mv_norm.back,
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info.mv_rev.fore, info.mv_rev.back);
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}
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int
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main(int argc, char **argv)
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{
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int opt;
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info.size = sizeof(info);
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if (ioctl(0, CONS_GETINFO, &info) < 0)
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err(1, "must be on a virtual console");
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while((opt = getopt(argc, argv, "b:c:df:l:Lm:r:s:t:x")) != -1)
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switch(opt) {
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case 'b':
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set_border_color(optarg);
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break;
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case 'c':
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set_cursor_type(optarg);
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break;
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case 'd':
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print_scrnmap();
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break;
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case 'f':
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load_font(optarg,
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nextarg(argc, argv, &optind, 'f'));
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break;
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case 'l':
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load_scrnmap(optarg);
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break;
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case 'L':
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load_default_scrnmap();
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break;
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case 'm':
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set_mouse(optarg);
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break;
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case 'r':
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set_reverse_colors(argc, argv, &optind);
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break;
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case 's':
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set_console(optarg);
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break;
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case 't':
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set_screensaver_timeout(optarg);
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break;
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case 'x':
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hex = 1;
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break;
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default:
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usage();
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}
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video_mode(argc, argv, &optind);
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set_normal_colors(argc, argv, &optind);
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if (optind < argc && !strcmp(argv[optind], "show")) {
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test_frame();
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optind++;
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}
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if ((optind != argc) || (argc == 1))
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usage();
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return 0;
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}
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