usr.sbin/vidcontrol/vidcontrol.c

   1 /*-
   2  * Copyright (c) 1994-1996 Søren Schmidt
   3  * All rights reserved.
   4  *
   5  * Redistribution and use in source and binary forms, with or without
   6  * modification, are permitted provided that the following conditions
   7  * are met:
   8  * 1. Redistributions of source code must retain the above copyright
   9  *    notice, this list of conditions and the following disclaimer,
  10  *    in this position and unchanged.
  11  * 2. Redistributions in binary form must reproduce the above copyright
  12  *    notice, this list of conditions and the following disclaimer in the
  13  *    documentation and/or other materials provided with the distribution.
  14  * 3. The name of the author may not be used to endorse or promote products
  15  *    derived from this software withough specific prior written permission
  16  *
  17  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
  18  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
  19  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
  20  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
  21  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  22  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  23  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  24  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  25  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  26  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  27  */
  28
  29 #ifndef lint
  30 static const char rcsid[] =
  31   "$FreeBSD: src/usr.sbin/vidcontrol/vidcontrol.c,v 1.32.2.7 2002/09/15 22:31:50 dd Exp $";
  32 #endif /* not lint */
  33
  34 #include <ctype.h>
  35 #include <err.h>
  36 #include <limits.h>
  37 #include <stdio.h>
  38 #include <stdlib.h>
  39 #include <string.h>
  40 #include <unistd.h>
  41 #include <machine/console.h>
  42 #include <sys/consio.h>
  43 #include <sys/errno.h>
  44 #include <sys/types.h>
  45 #include <sys/stat.h>
  46 #include "path.h"
  47 #include "decode.h"
  48
  49 #define _VESA_800x600_DFL_COLS 80
  50 #define _VESA_800x600_DFL_ROWS 25
  51 #define _VESA_800x600_DFL_FNSZ 16
  52
  53 #define DUMP_RAW        0
  54 #define DUMP_TXT        1
  55
  56 #define DUMP_FMT_REV    1
  57
  58 char    legal_colors[16][16] = {
  59         "black", "blue", "green", "cyan",
  60         "red", "magenta", "brown", "white",
  61         "grey", "lightblue", "lightgreen", "lightcyan",
  62         "lightred", "lightmagenta", "yellow", "lightwhite"
  63 };
  64 int     hex = 0;
  65 int     number;
  66 int     vesa_cols = _VESA_800x600_DFL_COLS;
  67 int     vesa_rows = _VESA_800x600_DFL_ROWS;
  68 char    letter;
  69 struct  vid_info info;
  70
  71
  72 static void
  73 usage()
  74 {
  75         fprintf(stderr, "%s\n%s\n%s\n%s\n%s\n",
  76 "usage: vidcontrol [-CdLPpx] [-b color] [-c appearance] [-f [size] file]",
  77 "                  [-g geometry] [-h size] [-i adapter | mode] [-l screen_map]",
  78 "                  [-M char] [-m on | off] [-r foreground background]",
  79 "                  [-S on | off] [-s number] [-t N | off] [mode]",
  80 "                  [foreground [background]] [show]");
  81         exit(1);
  82 }
  83
  84 char *
  85 nextarg(int ac, char **av, int *indp, int oc, int strict)
  86 {
  87         if (*indp < ac)
  88                 return(av[(*indp)++]);
  89         if (strict != 0)
  90                 errx(1, "option requires two arguments -- %c", oc);
  91         return(NULL);
  92 }
  93
  94 FILE *
  95 openguess(char *a[], char *b[], char *c[], char *d[], char **name)
  96 {
  97         FILE *f;
  98         int i, j, k, l;
  99
 100         for (i = 0; a[i] != NULL; i++) {
 101                 for (j = 0; b[j] != NULL; j++) {
 102                         for (k = 0; c[k] != NULL; k++) {
 103                                 for (l = 0; d[l] != NULL; l++) {
 104                                         asprintf(name, "%s%s%s%s", a[i], b[j],
 105                                             c[k], d[l]);
 106                                         f = fopen(*name, "r");
 107                                         if (f != NULL)
 108                                                 return (f);
 109                                         free(*name);
 110                                 }
 111                         }
 112                 }
 113         }
 114         return (NULL);
 115 }
 116
 117 void
 118 load_scrnmap(char *filename)
 119 {
 120         FILE *fd;
 121         int size;
 122         char *name;
 123         scrmap_t scrnmap;
 124         char *a[] = {"", SCRNMAP_PATH, NULL};
 125         char *b[] = {filename, NULL};
 126         char *c[] = {"", ".scm", NULL};
 127         char *d[] = {"", NULL};
 128
 129         fd = openguess(a, b, c, d, &name);
 130         if (fd == NULL) {
 131                 warn("screenmap file not found");
 132                 return;
 133         }
 134         size = sizeof(scrnmap);
 135         if (decode(fd, (char *)&scrnmap, size) != size) {
 136                 rewind(fd);
 137                 if (fread(&scrnmap, 1, size, fd) != size) {
 138                         warnx("bad screenmap file");
 139                         fclose(fd);
 140                         return;
 141                 }
 142         }
 143         if (ioctl(0, PIO_SCRNMAP, &scrnmap) < 0)
 144                 warn("can't load screenmap");
 145         fclose(fd);
 146 }
 147
 148 void
 149 load_default_scrnmap()
 150 {
 151         scrmap_t scrnmap;
 152         int i;
 153
 154         for (i=0; i<256; i++)
 155                 *((char*)&scrnmap + i) = i;
 156         if (ioctl(0, PIO_SCRNMAP, &scrnmap) < 0)
 157                 warn("can't load default screenmap");
 158 }
 159
 160 void
 161 print_scrnmap()
 162 {
 163         unsigned char map[256];
 164         int i;
 165
 166         if (ioctl(0, GIO_SCRNMAP, &map) < 0) {
 167                 warn("getting screenmap");
 168                 return;
 169         }
 170         for (i=0; i<sizeof(map); i++) {
 171                 if (i > 0 && i % 16 == 0)
 172                         fprintf(stdout, "\n");
 173                 if (hex)
 174                         fprintf(stdout, " %02x", map[i]);
 175                 else
 176                         fprintf(stdout, " %03d", map[i]);
 177         }
 178         fprintf(stdout, "\n");
 179
 180 }
 181
 182 int
 183 fsize(FILE *file)
 184 {
 185         struct stat sb;
 186
 187         if (fstat(fileno(file), &sb) == 0)
 188                 return sb.st_size;
 189         else
 190                 return -1;
 191 }
 192
 193 #define DATASIZE(x) ((x).w * (x).h * 256 / 8)
 194
 195 void
 196 load_font(char *type, char *filename)
 197 {
 198         FILE    *fd;
 199         int     h, i, size, w;
 200         unsigned long io = 0;   /* silence stupid gcc(1) in the Wall mode */
 201         char    *name, *fontmap, size_sufx[6];
 202         char    *a[] = {"", FONT_PATH, NULL};
 203         char    *b[] = {filename, NULL};
 204         char    *c[] = {"", size_sufx, NULL};
 205         char    *d[] = {"", ".fnt", NULL};
 206         vid_info_t info;
 207
 208         struct sizeinfo {
 209                 int w;
 210                 int h;
 211                 unsigned long io;
 212         } sizes[] = {{8, 16, PIO_FONT8x16},
 213                      {8, 14, PIO_FONT8x14},
 214                      {8,  8,  PIO_FONT8x8},
 215                      {0,  0,            0}};
 216
 217         info.size = sizeof(info);
 218         if (ioctl(0, CONS_GETINFO, &info) == -1) {
 219                 warn("failed to obtain current video mode parameters");
 220                 return;
 221         }
 222         snprintf(size_sufx, sizeof(size_sufx), "-8x%d", info.font_size);
 223         fd = openguess(a, b, c, d, &name);
 224         if (fd == NULL) {
 225                 warn("%s: can't load font file", filename);
 226                 return;
 227         }
 228         if (type != NULL) {
 229                 size = 0;
 230                 if (sscanf(type, "%dx%d", &w, &h) == 2)
 231                         for (i = 0; sizes[i].w != 0; i++)
 232                                 if (sizes[i].w == w && sizes[i].h == h) {
 233                                         size = DATASIZE(sizes[i]);
 234                                         io = sizes[i].io;
 235                                 }
 236
 237                 if (size == 0) {
 238                         warnx("%s: bad font size specification", type);
 239                         fclose(fd);
 240                         return;
 241                 }
 242         } else {
 243                 /* Apply heuristics */
 244                 int j;
 245                 int dsize[2];
 246
 247                 size = DATASIZE(sizes[0]);
 248                 fontmap = (char*) malloc(size);
 249                 dsize[0] = decode(fd, fontmap, size);
 250                 dsize[1] = fsize(fd);
 251                 free(fontmap);
 252
 253                 size = 0;
 254                 for (j = 0; j < 2; j++)
 255                         for (i = 0; sizes[i].w != 0; i++)
 256                                 if (DATASIZE(sizes[i]) == dsize[j]) {
 257                                         size = dsize[j];
 258                                         io = sizes[i].io;
 259                                         j = 2;  /* XXX */
 260                                         break;
 261                                 }
 262
 263                 if (size == 0) {
 264                         warnx("%s: can't guess font size", filename);
 265                         fclose(fd);
 266                         return;
 267                 }
 268                 rewind(fd);
 269         }
 270
 271         fontmap = (char*) malloc(size);
 272         if (decode(fd, fontmap, size) != size) {
 273                 rewind(fd);
 274                 if (fsize(fd) != size || fread(fontmap, 1, size, fd) != size) {
 275                         warnx("%s: bad font file", filename);
 276                         fclose(fd);
 277                         free(fontmap);
 278                         return;
 279                 }
 280         }
 281         if (ioctl(0, io, fontmap) < 0)
 282                 warn("can't load font");
 283         fclose(fd);
 284         free(fontmap);
 285 }
 286
 287 void
 288 set_screensaver_timeout(char *arg)
 289 {
 290         int nsec;
 291
 292         if (!strcmp(arg, "off"))
 293                 nsec = 0;
 294         else {
 295                 nsec = atoi(arg);
 296                 if ((*arg == '\0') || (nsec < 1)) {
 297                         warnx("argument must be a positive number");
 298                         return;
 299                 }
 300         }
 301         if (ioctl(0, CONS_BLANKTIME, &nsec) == -1)
 302                 warn("setting screensaver period");
 303 }
 304
 305 void
 306 set_cursor_type(char *appearence)
 307 {
 308         int type;
 309
 310         if (!strcmp(appearence, "normal"))
 311                 type = 0;
 312         else if (!strcmp(appearence, "blink"))
 313                 type = 1;
 314         else if (!strcmp(appearence, "destructive"))
 315                 type = 3;
 316         else {
 317                 warnx("argument to -c must be normal, blink or destructive");
 318                 return;
 319         }
 320         ioctl(0, CONS_CURSORTYPE, &type);
 321 }
 322
 323 void
 324 video_mode(int argc, char **argv, int *index)
 325 {
 326         static struct {
 327                 char *name;
 328                 unsigned long mode;
 329         } modes[] = {
 330                 { "80x25",              SW_TEXT_80x25 },
 331                 { "80x30",              SW_TEXT_80x30 },
 332                 { "80x43",              SW_TEXT_80x43 },
 333                 { "80x50",              SW_TEXT_80x50 },
 334                 { "80x60",              SW_TEXT_80x60 },
 335                 { "132x25",             SW_TEXT_132x25 },
 336                 { "132x30",             SW_TEXT_132x30 },
 337                 { "132x43",             SW_TEXT_132x43 },
 338                 { "132x50",             SW_TEXT_132x50 },
 339                 { "132x60",             SW_TEXT_132x60 },
 340                 { "VGA_40x25",          SW_VGA_C40x25 },
 341                 { "VGA_80x25",          SW_VGA_C80x25 },
 342                 { "VGA_80x30",          SW_VGA_C80x30 },
 343                 { "VGA_80x50",          SW_VGA_C80x50 },
 344                 { "VGA_80x60",          SW_VGA_C80x60 },
 345 #ifdef SW_VGA_C90x25
 346                 { "VGA_90x25",          SW_VGA_C90x25 },
 347                 { "VGA_90x30",          SW_VGA_C90x30 },
 348                 { "VGA_90x43",          SW_VGA_C90x43 },
 349                 { "VGA_90x50",          SW_VGA_C90x50 },
 350                 { "VGA_90x60",          SW_VGA_C90x60 },
 351 #endif
 352                 { "VGA_320x200",        SW_VGA_CG320 },
 353                 { "EGA_80x25",          SW_ENH_C80x25 },
 354                 { "EGA_80x43",          SW_ENH_C80x43 },
 355                 { "VESA_132x25",        SW_VESA_C132x25 },
 356                 { "VESA_132x43",        SW_VESA_C132x43 },
 357                 { "VESA_132x50",        SW_VESA_C132x50 },
 358                 { "VESA_132x60",        SW_VESA_C132x60 },
 359                 { "VESA_800x600",       SW_VESA_800x600 },
 360                 { NULL },
 361         };
 362         unsigned long mode = 0;
 363         int cur_mode;
 364         int ioerr;
 365         int size[3];
 366         int i;
 367
 368         if (ioctl(0, CONS_GET, &cur_mode) < 0)
 369                 err(1, "cannot get the current video mode");
 370         if (*index < argc) {
 371                 for (i = 0; modes[i].name != NULL; ++i) {
 372                         if (!strcmp(argv[*index], modes[i].name)) {
 373                                 mode = modes[i].mode;
 374                                 break;
 375                         }
 376                 }
 377                 if (modes[i].name == NULL)
 378                         return;
 379                 if (ioctl(0, mode, NULL) < 0)
 380                         warn("cannot set videomode");
 381                 if (mode == SW_VESA_800x600) {
 382                         /* columns */
 383                         if ((vesa_cols * 8 > 800) || (vesa_cols <= 0)) {
 384                                 warnx("incorrect number of columns: %d",
 385                                       vesa_cols);
 386                                 size[0] = _VESA_800x600_DFL_COLS;
 387                         } else {
 388                                 size[0] = vesa_cols;
 389                         }
 390                         /* rows */
 391                         if ((vesa_rows * _VESA_800x600_DFL_FNSZ > 600) ||
 392                             (vesa_rows <=0)) {
 393                                 warnx("incorrect number of rows: %d",
 394                                       vesa_rows);
 395                                 size[1] = _VESA_800x600_DFL_ROWS;
 396                         } else {
 397                                 size[1] = vesa_rows;
 398                         }
 399                         /* font size */
 400                         size[2] = _VESA_800x600_DFL_FNSZ;
 401                         if (ioctl(0, KDRASTER, size)) {
 402                                 ioerr = errno;
 403                                 if (cur_mode >= M_VESA_BASE)
 404                                         ioctl(0,
 405                                             _IO('V', cur_mode - M_VESA_BASE),
 406                                             NULL);
 407                                 else
 408                                         ioctl(0, _IO('S', cur_mode), NULL);
 409                                 warnc(ioerr, "cannot activate raster display");
 410                         }
 411                 }
 412                 (*index)++;
 413         }
 414         return;
 415 }
 416
 417 int
 418 get_color_number(char *color)
 419 {
 420         int i;
 421
 422         for (i=0; i<16; i++)
 423                 if (!strcmp(color, legal_colors[i]))
 424                         return i;
 425         return -1;
 426 }
 427
 428 void
 429 set_normal_colors(int argc, char **argv, int *index)
 430 {
 431         int color;
 432
 433         if (*index < argc && (color = get_color_number(argv[*index])) != -1) {
 434                 (*index)++;
 435                 fprintf(stderr, "\e[=%dF", color);
 436                 if (*index < argc
 437                     && (color = get_color_number(argv[*index])) != -1
 438                     && color < 8) {
 439                         (*index)++;
 440                         fprintf(stderr, "\e[=%dG", color);
 441                 }
 442         }
 443 }
 444
 445 void
 446 set_reverse_colors(int argc, char **argv, int *index)
 447 {
 448         int color;
 449
 450         if ((color = get_color_number(argv[*(index)-1])) != -1) {
 451                 fprintf(stderr, "\e[=%dH", color);
 452                 if (*index < argc
 453                     && (color = get_color_number(argv[*index])) != -1
 454                     && color < 8) {
 455                         (*index)++;
 456                         fprintf(stderr, "\e[=%dI", color);
 457                 }
 458         }
 459 }
 460
 461 void
 462 set_console(char *arg)
 463 {
 464         int n;
 465
 466         if( !arg || strspn(arg,"0123456789") != strlen(arg)) {
 467                 warnx("bad console number");
 468                 return;
 469         }
 470
 471         n = atoi(arg);
 472         if (n < 1 || n > 16) {
 473                 warnx("console number out of range");
 474         } else if (ioctl(0, VT_ACTIVATE, (caddr_t) (long) n) == -1)
 475                 warn("ioctl(VT_ACTIVATE)");
 476 }
 477
 478 void
 479 set_border_color(char *arg)
 480 {
 481         int color;
 482
 483         if ((color = get_color_number(arg)) != -1) {
 484                 fprintf(stderr, "\e[=%dA", color);
 485         }
 486         else
 487                 usage();
 488 }
 489
 490 void
 491 set_mouse_char(char *arg)
 492 {
 493         struct mouse_info mouse;
 494         long l;
 495
 496         l = strtol(arg, NULL, 0);
 497         if ((l < 0) || (l > UCHAR_MAX)) {
 498                 warnx("argument to -M must be 0 through %d", UCHAR_MAX);
 499                 return;
 500         }
 501         mouse.operation = MOUSE_MOUSECHAR;
 502         mouse.u.mouse_char = (int)l;
 503         ioctl(0, CONS_MOUSECTL, &mouse);
 504 }
 505
 506 void
 507 set_mouse(char *arg)
 508 {
 509         struct mouse_info mouse;
 510
 511         if (!strcmp(arg, "on"))
 512                 mouse.operation = MOUSE_SHOW;
 513         else if (!strcmp(arg, "off"))
 514                 mouse.operation = MOUSE_HIDE;
 515         else {
 516                 warnx("argument to -m must be either on or off");
 517                 return;
 518         }
 519         ioctl(0, CONS_MOUSECTL, &mouse);
 520 }
 521
 522 void
 523 set_lockswitch(char *arg)
 524 {
 525         int data;
 526
 527         if (!strcmp(arg, "off"))
 528                 data = 0x01;
 529         else if (!strcmp(arg, "on"))
 530                 data = 0x02;
 531         else {
 532                 warnx("argument to -S must be either on or off");
 533                 return;
 534         }
 535         if (ioctl(0, VT_LOCKSWITCH, &data) == -1)
 536                 warn("ioctl(VT_LOCKSWITCH)");
 537 }
 538
 539 static char
 540 *adapter_name(int type)
 541 {
 542     static struct {
 543         int type;
 544         char *name;
 545     } names[] = {
 546         { KD_MONO,      "MDA" },
 547         { KD_HERCULES,  "Hercules" },
 548         { KD_CGA,       "CGA" },
 549         { KD_EGA,       "EGA" },
 550         { KD_VGA,       "VGA" },
 551         { KD_PC98,      "PC-98xx" },
 552         { KD_TGA,       "TGA" },
 553         { -1,           "Unknown" },
 554     };
 555     int i;
 556
 557     for (i = 0; names[i].type != -1; ++i)
 558         if (names[i].type == type)
 559             break;
 560     return names[i].name;
 561 }
 562
 563 void
 564 show_adapter_info(void)
 565 {
 566         struct video_adapter_info ad;
 567
 568         ad.va_index = 0;
 569         if (ioctl(0, CONS_ADPINFO, &ad)) {
 570                 warn("failed to obtain adapter information");
 571                 return;
 572         }
 573
 574         printf("fb%d:\n", ad.va_index);
 575         printf("    %.*s%d, type:%s%s (%d), flags:0x%x\n",
 576                (int)sizeof(ad.va_name), ad.va_name, ad.va_unit,
 577                (ad.va_flags & V_ADP_VESA) ? "VESA " : "",
 578                adapter_name(ad.va_type), ad.va_type, ad.va_flags);
 579         printf("    initial mode:%d, current mode:%d, BIOS mode:%d\n",
 580                ad.va_initial_mode, ad.va_mode, ad.va_initial_bios_mode);
 581         printf("    frame buffer window:0x%x, buffer size:0x%x\n",
 582                ad.va_window, ad.va_buffer_size);
 583         printf("    window size:0x%x, origin:0x%x\n",
 584                ad.va_window_size, ad.va_window_orig);
 585         printf("    display start address (%d, %d), scan line width:%d\n",
 586                ad.va_disp_start.x, ad.va_disp_start.y, ad.va_line_width);
 587         printf("    reserved:0x%x\n", ad.va_unused0);
 588 }
 589
 590 void
 591 show_mode_info(void)
 592 {
 593         struct video_info info;
 594         char buf[80];
 595         int mode;
 596         int c;
 597
 598         printf("    mode#     flags   type    size       "
 599                "font      window      linear buffer\n");
 600         printf("---------------------------------------"
 601                "---------------------------------------\n");
 602         for (mode = 0; mode < M_VESA_MODE_MAX; ++mode) {
 603                 info.vi_mode = mode;
 604                 if (ioctl(0, CONS_MODEINFO, &info))
 605                         continue;
 606                 if (info.vi_mode != mode)
 607                         continue;
 608
 609                 printf("%3d (0x%03x)", mode, mode);
 610                 printf(" 0x%08x", info.vi_flags);
 611                 if (info.vi_flags & V_INFO_GRAPHICS) {
 612                         c = 'G';
 613                         snprintf(buf, sizeof(buf), "%dx%dx%d %d",
 614                                  info.vi_width, info.vi_height,
 615                                  info.vi_depth, info.vi_planes);
 616                 } else {
 617                         c = 'T';
 618                         snprintf(buf, sizeof(buf), "%dx%d",
 619                                  info.vi_width, info.vi_height);
 620                 }
 621                 printf(" %c %-15s", c, buf);
 622                 snprintf(buf, sizeof(buf), "%dx%d",
 623                          info.vi_cwidth, info.vi_cheight);
 624                 printf(" %-5s", buf);
 625                 printf(" 0x%05x %2dk %2dk",
 626                        info.vi_window, (int)info.vi_window_size/1024,
 627                        (int)info.vi_window_gran/1024);
 628                 printf(" 0x%08x %dk\n",
 629                        info.vi_buffer, (int)info.vi_buffer_size/1024);
 630         }
 631 }
 632
 633 void
 634 show_info(char *arg)
 635 {
 636         if (!strcmp(arg, "adapter"))
 637                 show_adapter_info();
 638         else if (!strcmp(arg, "mode"))
 639                 show_mode_info();
 640         else {
 641                 warnx("argument to -i must be either adapter or mode");
 642                 return;
 643         }
 644 }
 645
 646 void
 647 test_frame()
 648 {
 649         int i;
 650
 651         fprintf(stdout, "\e[=0G\n\n");
 652         for (i=0; i<8; i++) {
 653                 fprintf(stdout, "\e[=15F\e[=0G        %2d \e[=%dF%-16s"
 654                                 "\e[=15F\e[=0G        %2d \e[=%dF%-16s        "
 655                                 "\e[=15F %2d \e[=%dGBACKGROUND\e[=0G\n",
 656                         i, i, legal_colors[i], i+8, i+8,
 657                         legal_colors[i+8], i, i);
 658         }
 659         fprintf(stdout, "\e[=%dF\e[=%dG\e[=%dH\e[=%dI\n",
 660                 info.mv_norm.fore, info.mv_norm.back,
 661                 info.mv_rev.fore, info.mv_rev.back);
 662 }
 663
 664 /*
 665  * Snapshot the video memory of that terminal, using the CONS_SCRSHOT
 666  * ioctl, and writes the results to stdout either in the special
 667  * binary format (see manual page for details), or in the plain
 668  * text format.
 669  */
 670 void
 671 dump_screen(int mode)
 672 {
 673         scrshot_t shot;
 674         vid_info_t info;
 675
 676         info.size = sizeof(info);
 677         if (ioctl(0, CONS_GETINFO, &info) == -1) {
 678                 warn("failed to obtain current video mode parameters");
 679                 return;
 680         }
 681
 682         shot.buf = alloca(info.mv_csz * info.mv_rsz * sizeof(u_int16_t));
 683         if (shot.buf == NULL) {
 684                 warn("failed to allocate memory for dump");
 685                 return;
 686         }
 687
 688         shot.xsize = info.mv_csz;
 689         shot.ysize = info.mv_rsz;
 690         if (ioctl(0, CONS_SCRSHOT, &shot) == -1) {
 691                 warn("failed to get dump of the screen");
 692                 return;
 693         }
 694
 695         if (mode == DUMP_RAW) {
 696                 printf("SCRSHOT_%c%c%c%c", DUMP_FMT_REV, 2,
 697                        shot.xsize, shot.ysize);
 698                 fflush(stdout);
 699
 700                 (void)write(STDOUT_FILENO, shot.buf,
 701                             shot.xsize * shot.ysize * sizeof(u_int16_t));
 702         } else {
 703                 char *line;
 704                 int x, y;
 705                 u_int16_t ch;
 706
 707                 line = alloca(shot.xsize + 1);
 708                 if (line == NULL) {
 709                         warn("failed to allocate memory for line buffer");
 710                         return;
 711                 }
 712
 713                 for (y = 0; y < shot.ysize; y++) {
 714                         for (x = 0; x < shot.xsize; x++) {
 715                                 ch = shot.buf[x + (y * shot.xsize)];
 716                                 ch &= 0xff;
 717                                 if (isprint(ch) == 0)
 718                                         ch = ' ';
 719                                 line[x] = (char)ch;
 720                         }
 721
 722                         /* Trim trailing spaces */
 723                         do {
 724                                 line[x--] = '\0';
 725                         } while (line[x] == ' ' && x != 0);
 726
 727                         puts(line);
 728                 }
 729                 fflush(stdout);
 730         }
 731
 732         return;
 733 }
 734
 735 void
 736 set_history(char *opt)
 737 {
 738         int size;
 739
 740         size = atoi(opt);
 741         if ((*opt == '\0') || size < 0) {
 742                 warnx("argument must be a positive number");
 743                 return;
 744         }
 745         if (ioctl(0, CONS_HISTORY, &size) == -1)
 746                 warn("setting history buffer size");
 747 }
 748
 749 void
 750 clear_history()
 751 {
 752
 753         if (ioctl(0, CONS_CLRHIST) == -1)
 754                 warn("clear history buffer");
 755 }
 756
 757 int
 758 main(int argc, char **argv)
 759 {
 760         char    *font, *type;
 761         int     opt;
 762
 763
 764         info.size = sizeof(info);
 765         if (argc == 1)
 766                 usage();
 767                 /* Not reached */
 768         if (ioctl(0, CONS_GETINFO, &info) < 0)
 769                 err(1, "must be on a virtual console");
 770         while((opt = getopt(argc, argv, "b:Cc:df:g:h:i:l:LM:m:pPr:S:s:t:x")) != -1)
 771                 switch(opt) {
 772                 case 'b':
 773                         set_border_color(optarg);
 774                         break;
 775                 case 'C':
 776                         clear_history();
 777                         break;
 778                 case 'c':
 779                         set_cursor_type(optarg);
 780                         break;
 781                 case 'd':
 782                         print_scrnmap();
 783                         break;
 784                 case 'f':
 785                         type = optarg;
 786                         font = nextarg(argc, argv, &optind, 'f', 0);
 787                         if (font == NULL) {
 788                                 type = NULL;
 789                                 font = optarg;
 790                         }
 791                         load_font(type, font);
 792                         break;
 793                 case 'g':
 794                         if (sscanf(optarg, "%dx%d", &vesa_cols,
 795                             &vesa_rows) != 2) {
 796                                 warnx("incorrect geometry: %s", optarg);
 797                                 usage();
 798                         }
 799                         break;
 800                 case 'h':
 801                         set_history(optarg);
 802                         break;
 803                 case 'i':
 804                         show_info(optarg);
 805                         break;
 806                 case 'l':
 807                         load_scrnmap(optarg);
 808                         break;
 809                 case 'L':
 810                         load_default_scrnmap();
 811                         break;
 812                 case 'M':
 813                         set_mouse_char(optarg);
 814                         break;
 815                 case 'm':
 816                         set_mouse(optarg);
 817                         break;
 818                 case 'p':
 819                         dump_screen(DUMP_RAW);
 820                         break;
 821                 case 'P':
 822                         dump_screen(DUMP_TXT);
 823                         break;
 824                 case 'r':
 825                         set_reverse_colors(argc, argv, &optind);
 826                         break;
 827                 case 'S':
 828                         set_lockswitch(optarg);
 829                         break;
 830                 case 's':
 831                         set_console(optarg);
 832                         break;
 833                 case 't':
 834                         set_screensaver_timeout(optarg);
 835                         break;
 836                 case 'x':
 837                         hex = 1;
 838                         break;
 839                 default:
 840                         usage();
 841                 }
 842         video_mode(argc, argv, &optind);
 843         set_normal_colors(argc, argv, &optind);
 844         if (optind < argc && !strcmp(argv[optind], "show")) {
 845                 test_frame();
 846                 optind++;
 847         }
 848         if ((optind != argc) || (argc == 1))
 849                 usage();
 850         return 0;
 851 }
 852