git.gag.com Git - debian/elilo/blob - choosers/textmenu.c

   1 /*
   2  *  Copyright (C) 2001-2003 Hewlett-Packard Co.
   3  *      Contributed by Richard Hirst <rhirst@linuxcare.com>
   4  *
   5  * This file is part of the ELILO, the EFI Linux boot loader.
   6  *
   7  *  ELILO is free software; you can redistribute it and/or modify
   8  *  it under the terms of the GNU General Public License as published by
   9  *  the Free Software Foundation; either version 2, or (at your option)
  10  *  any later version.
  11  *
  12  *  ELILO is distributed in the hope that it will be useful,
  13  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15  *  GNU General Public License for more details.
  16  *
  17  *  You should have received a copy of the GNU General Public License
  18  *  along with ELILO; see the file COPYING.  If not, write to the Free
  19  *  Software Foundation, 59 Temple Place - Suite 330, Boston, MA
  20  *  02111-1307, USA.
  21  *
  22  * Please check out the elilo.txt for complete documentation on how
  23  * to use this program.
  24  */
  25
  26 #include <efi.h>
  27 #include <efilib.h>
  28
  29 #include "elilo.h"
  30
  31 #define MAX_LABELS      16
  32 #define MSGBUFLEN       4096
  33
  34 static UINT8 msgbuf[MSGBUFLEN];
  35 static CHAR16 *labels[MAX_LABELS];
  36 static CHAR16 *descriptions[MAX_LABELS];
  37 static INTN nlabels;
  38 static INTN CursorRow, CursorCol, PromptRow, PromptCol;
  39 static INTN MenuRow, MenuCol, MenuWidth, MenuHeight;
  40 static INTN DisplayParsed, CurrentAttr, PromptAttr;
  41 static INTN PromptWidth, MenuHiAttr, MenuLoAttr;
  42 static INTN PromptLen, MenuActive, MenuFirst;
  43 static CHAR16 PromptBuf[CMDLINE_MAXLEN];
  44
  45 #define DEF_ATTR        EFI_TEXT_ATTR(EFI_LIGHTGRAY,EFI_BLACK)
  46
  47
  48 #define ClearScreen()   ST->ConOut->ClearScreen(ST->ConOut)
  49 #define SetTextAttr(a)  ST->ConOut->SetAttribute(ST->ConOut, a)
  50
  51 static INTN
  52 tohex(INTN c)
  53 {
  54         if (c >= '0' && c <= '9')
  55                 return c - '0';
  56         else if (c >= 'A' && c <= 'F')
  57                 return c = c - 'A' + 10;
  58         else if (c >= 'a' && c <= 'f')
  59                 return c = c - 'a' + 10;
  60         else
  61                 return 16;
  62 }
  63
  64 static VOID
  65 paint_msg(UINT8 *msg)
  66 {
  67         INTN c;
  68
  69         CursorCol = CursorRow = 0;
  70         CurrentAttr = DEF_ATTR;
  71         SetTextAttr(CurrentAttr);
  72         ClearScreen();
  73         while ((c = *msg++)) {
  74                 /* First map VGA to EFI line drawing chars */
  75                 if      (c == 0xda) c = BOXDRAW_DOWN_RIGHT;
  76                 else if (c == 0xc4) c = BOXDRAW_HORIZONTAL;
  77                 else if (c == 0xbf) c = BOXDRAW_DOWN_LEFT;
  78                 else if (c == 0xb3) c = BOXDRAW_VERTICAL;
  79                 else if (c == 0xd9) c = BOXDRAW_UP_LEFT;
  80                 else if (c == 0xc0) c = BOXDRAW_UP_RIGHT;
  81                 else if (c == 0xb4) c = BOXDRAW_VERTICAL_LEFT;
  82                 else if (c == 0xc3) c = BOXDRAW_VERTICAL_RIGHT;
  83                 else if (c == 0x1e) c = GEOMETRICSHAPE_UP_TRIANGLE;
  84                 else if (c == 0x1f) c = GEOMETRICSHAPE_DOWN_TRIANGLE;
  85                 else if (c > 0x7f)  c = '?';
  86
  87                 /* Now print the printable chars, then process controls */
  88                 if (c >= ' ') {
  89                         Print(L"%c", c);
  90                         CursorCol++;
  91                 }
  92                 else {
  93                         switch (c) {
  94                         case '\r':              /* Ignore CR */
  95                                 break;
  96                         case '\n':              /* LF treated as cr/lf */
  97                                 CursorRow++;
  98                                 CursorCol = 0;
  99                                 Print(L"\n");
 100                                 break;
 101                         case 0x0c:              /* FF - Clear screen */
 102                                 CursorCol = CursorRow = 0;
 103                                 ClearScreen();
 104                                 break;
 105                         case 0x0f:              /* ^O - Attributes */
 106                                 if (msg[0] && msg[1]) {
 107                                         INTN bg = tohex(*msg++);
 108                                         INTN fg = tohex(*msg++);
 109
 110                                         if (bg < 16 || fg < 16) {
 111                                                 CurrentAttr = EFI_TEXT_ATTR(fg, bg);
 112                                                 SetTextAttr(CurrentAttr);
 113                                         }
 114                                 }
 115                                 break;
 116                         case 0x01:              /* ^A - Prompt */
 117                                 if (!DisplayParsed) {
 118                                         if (!PromptRow) {
 119                                                 PromptRow = CursorRow;
 120                                                 PromptCol = CursorCol;
 121                                                 PromptAttr = CurrentAttr;
 122                                         }
 123                                         else if (!PromptWidth)
 124                                                 PromptWidth = CursorCol - PromptCol;
 125                                         /* else bad syntax */
 126                                 }
 127                                 break;
 128                         case 0x02:              /* ^B - Menu */
 129                                 if (!DisplayParsed) {
 130                                         if (!MenuRow) {
 131                                                 MenuRow = CursorRow;
 132                                                 MenuCol = CursorCol;
 133                                                 MenuLoAttr = CurrentAttr;
 134                                         }
 135                                         else if (!MenuWidth) {
 136                                                 MenuWidth = CursorCol - MenuCol;
 137                                                 MenuHeight = CursorRow - MenuRow + 1;
 138                                                 MenuHiAttr = CurrentAttr;
 139                                         }
 140                                         /* else bad syntax */
 141                                 }
 142                                 break;
 143                         default:
 144                                 Print(L"?");
 145                                 CursorCol++;
 146                         }
 147                 }
 148         }
 149 }
 150
 151
 152 static VOID
 153 paint_prompt(VOID)
 154 {
 155         INTN offset = PromptLen > PromptWidth - 1 ? PromptLen - PromptWidth + 1: 0;
 156         SetTextAttr(PromptAttr);
 157         PrintAt(PromptCol, PromptRow, L"%s%s", PromptBuf + offset, L" \b");
 158         SetTextAttr(CurrentAttr);
 159 }
 160
 161 static VOID
 162 paint_menu(VOID)
 163 {
 164         INTN i, j;
 165
 166         for (i = 0; i < MenuHeight; i++) {
 167                 INTN attr = (i + MenuFirst == MenuActive) ? MenuHiAttr: MenuLoAttr;
 168                 CHAR16 description[80];
 169
 170                 for (j = 0; j < MenuWidth; j++)
 171                         description[j] = ' ';
 172                 description[MenuWidth] = '\0';
 173                 if (i + MenuFirst < nlabels) {
 174                         for (j = 0; descriptions[i + MenuFirst][j] && j < MenuWidth; j++)
 175                                 description[j+1] = descriptions[i + MenuFirst][j];
 176                 }
 177                 SetTextAttr(attr);
 178                 PrintAt(MenuCol, MenuRow + i, L"%-.*s", MenuWidth, description);
 179                 SetTextAttr(CurrentAttr);
 180         }
 181         paint_prompt();
 182 }
 183
 184 static INTN
 185 read_message_file(INTN msg, INT8 *buf, INTN max)
 186 {
 187         CHAR16 *filename;
 188         fops_fd_t message_fd;
 189         EFI_STATUS status;
 190         INTN len = max;
 191
 192         if (msg > 10) return 0;
 193
 194         if ((filename = get_message_filename(msg)) == NULL) {
 195                 VERB_PRT(3, Print(L"no message file specified\n"));
 196                 return 0;
 197         }
 198
 199         VERB_PRT(3, Print(L"opening message file %s\n", filename));
 200
 201         status = fops_open(filename, &message_fd);
 202         if (EFI_ERROR(status)) {
 203                 VERB_PRT(3, Print(L"message file %s not found\n", filename));
 204                 return 0;
 205         }
 206
 207         status = fops_read(message_fd, buf, &len);
 208         if (EFI_ERROR(status)) {
 209                 VERB_PRT(3, Print(L"Error reading message file\n"));
 210                 len = 0;
 211         }
 212
 213         fops_close(message_fd);
 214
 215         VERB_PRT(3, Print(L"done reading message file %s\n", filename));
 216
 217         return len;
 218 }
 219
 220
 221 /*
 222  * interactively select a kernel image and options.
 223  * The kernel can be an actual filename or a label in the config file
 224  * Return:
 225  *      -1: if unsucessful
 226  *       0: otherwise
 227  */
 228 static INTN
 229 select_kernel(CHAR16 *label, INTN lsize)
 230 {
 231 #define CHAR_CTRL_C     (L'\003') /* Unicode CTRL-C */
 232 #define CHAR_CTRL_D     (L'\004') /* Unicode CTRL-D */
 233 #define CHAR_CTRL_F     (L'\006') /* Unicode CTRL-F */
 234 #define CHAR_DEL        (L'\177') /* Unicode DEL */
 235         SIMPLE_INPUT_INTERFACE *ip = systab->ConIn;
 236         EFI_INPUT_KEY key;
 237         EFI_STATUS status;
 238         INT8 first_time = 1;
 239         INTN i;
 240         INT8 fn = 0;
 241
 242 reprint:
 243         i = read_message_file(0, msgbuf, MSGBUFLEN-1);
 244         msgbuf[i] = 0;
 245         paint_msg(msgbuf);
 246         DisplayParsed = 1;
 247         paint_menu();
 248         CurrentAttr = PromptAttr;
 249         SetTextAttr(CurrentAttr);
 250
 251         for (;;) {
 252                 while ((status=ip->ReadKeyStroke(ip, &key)) == EFI_NOT_READY);
 253                 if (EFI_ERROR(status)) {
 254                         SetTextAttr(EFI_TEXT_ATTR(EFI_LIGHTGRAY,EFI_BLACK));
 255                         ClearScreen();
 256                         ERR_PRT((L"select_kernel readkey: %r", status));
 257                         return -1;
 258                 }
 259                 if (key.UnicodeChar == CHAR_CTRL_F) {
 260                         fn = 1;
 261                         continue;
 262                 }
 263                 if (fn) {
 264                         if (key.UnicodeChar >= '0' && key.UnicodeChar <= '9') {
 265                                 if (key.UnicodeChar == '0')
 266                                         key.ScanCode = SCAN_F10;
 267                                 else
 268                                         key.ScanCode = SCAN_F1 + key.UnicodeChar - '1';
 269                                 key.UnicodeChar = 0;
 270                         }
 271                         fn = 0;
 272                 }
 273                 if (key.ScanCode == SCAN_UP) {
 274                         if (MenuActive)
 275                                 MenuActive--;
 276                         else
 277                                 continue;
 278                         if (MenuActive < MenuFirst)
 279                                 MenuFirst = MenuActive;
 280                         paint_menu();
 281                         continue;
 282                 }
 283                 else if (key.ScanCode == SCAN_DOWN) {
 284                         if (MenuActive < nlabels - 1)
 285                                 MenuActive++;
 286                         else
 287                                 continue;
 288                         if (MenuActive >= MenuFirst + MenuHeight)
 289                                 MenuFirst = MenuActive - MenuHeight + 1;
 290                         paint_menu();
 291                         continue;
 292                 }
 293                 else if (key.ScanCode >= SCAN_F1 && key.ScanCode <= SCAN_F10) {
 294                         i = read_message_file(key.ScanCode - SCAN_F1 + 1, msgbuf, MSGBUFLEN-1);
 295                         if (i) {
 296                                 msgbuf[i] = 0;
 297                                 paint_msg(msgbuf);
 298                                 while ((status=ip->ReadKeyStroke(ip, &key)) == EFI_NOT_READY);
 299                                 goto reprint;
 300                         }
 301                 }
 302
 303                 switch (key.UnicodeChar) {
 304                         /* XXX Do we really want this in textmenual mode? */
 305                         case L'?':
 306                                 Print(L"\n");
 307                                 print_devices();
 308                                 first_time = 0;
 309                                 goto reprint;
 310                         case CHAR_BACKSPACE:
 311                         case CHAR_DEL:
 312                                 if (PromptLen == 0) break;
 313                                 PromptLen--;
 314                                 PromptBuf[PromptLen] = 0;
 315                                 if (PromptLen >= PromptWidth-2)
 316                                         paint_prompt();
 317                                 else
 318                                         Print(L"\b \b");
 319                                 break;
 320
 321                         case CHAR_LINEFEED:
 322                         case CHAR_CARRIAGE_RETURN:
 323                                 StrCpy(label, labels[MenuActive]);
 324                                 SetTextAttr(EFI_TEXT_ATTR(EFI_LIGHTGRAY,EFI_BLACK));
 325                                 ClearScreen();
 326                                 return 0;
 327
 328                         default:
 329                                 if ( key.UnicodeChar == CHAR_CTRL_D
 330                                                 || key.UnicodeChar == CHAR_CTRL_C) {
 331                                         SetTextAttr(EFI_TEXT_ATTR(EFI_LIGHTGRAY,EFI_BLACK));
 332                                         ClearScreen();
 333                                         Print(L"\nGiving up then...\n");
 334                                         return  -1;
 335                                 }
 336                                 if (key.UnicodeChar == CHAR_NULL) break;
 337
 338                                 if (PromptLen > CMDLINE_MAXLEN-1) break;
 339
 340                                 if (key.UnicodeChar < ' ' || key.UnicodeChar > 0x7e)
 341                                         key.UnicodeChar = '?';
 342                                 PromptBuf[PromptLen++] = key.UnicodeChar;
 343                                 PromptBuf[PromptLen]   = 0;
 344
 345                                 /* Write the character out */
 346                                 if (PromptLen >= PromptWidth-1)
 347                                         paint_prompt();
 348                                 else
 349                                         Print(L"%c", key.UnicodeChar);
 350                 }
 351         }
 352         return 0;
 353 }
 354
 355 INTN
 356 textmenu_choose(CHAR16 **argv, INTN argc, INTN index, CHAR16 *kname, CHAR16 *cmdline)
 357 {
 358 #       define BOOT_IMG_STR     L"BOOT_IMAGE="
 359         CHAR16 label[CMDLINE_MAXLEN];
 360         CHAR16 initrd_name[CMDLINE_MAXLEN];
 361         CHAR16 args[CMDLINE_MAXLEN];
 362         CHAR16 devname[CMDLINE_MAXLEN];
 363         CHAR16 dpath[FILENAME_MAXLEN];
 364         CHAR16 *slash_pos, *colon_pos, *backslash_pos;
 365         UINTN len;
 366         INTN ret;
 367         VOID *handle = NULL;
 368
 369         /* Clear all static variables, as we might be called more than once */
 370
 371         CursorRow = CursorCol = PromptRow = PromptCol = 0;
 372         MenuRow = MenuCol = MenuWidth = MenuHeight = 0;
 373         DisplayParsed = CurrentAttr = PromptAttr = 0;
 374         PromptWidth = MenuHiAttr = MenuLoAttr = 0;
 375         PromptLen = MenuActive = MenuFirst = 0;
 376         PromptBuf[0] = CHAR_NULL;
 377
 378         nlabels = 0;
 379         while (nlabels < MAX_LABELS && (handle = get_next_description(handle, labels + nlabels, descriptions + nlabels))) {
 380                 if (descriptions[nlabels][0] == 0)
 381                         descriptions[nlabels] = labels[nlabels];
 382                 nlabels++;
 383         }
 384 restart:
 385         initrd_name[0] = kname[0] = cmdline[0] = args[0] = CHAR_NULL;
 386
 387         /* reset per image loader options */
 388         Memset(&elilo_opt.img_opt, 0, sizeof(elilo_opt.img_opt));
 389
 390         if (elilo_opt.prompt) {
 391                 ret = select_kernel(label, sizeof(label));
 392                 if (ret == -1) return -1;
 393                 argc    = argify(PromptBuf,sizeof(PromptBuf), argv);
 394                 index   = 0;
 395         }
 396
 397         /*
 398          * check for alternate kernel image and params in EFI variable
 399          */
 400         if (elilo_opt.alt_check && alternate_kernel(PromptBuf, sizeof(PromptBuf)) == 0) {
 401                 argc    = argify(PromptBuf,sizeof(PromptBuf), argv);
 402                 index   = 0;
 403                 label[0] = args[0] = initrd_name[0] = 0;
 404         }
 405
 406         /*
 407          * First search for matching label in the config file
 408          * if options were specified on command line, they take
 409          * precedence over the ones in the config file
 410          *
 411          * if no match is found, the args and initrd arguments may
 412          * still be modified by global options in the config file.
 413          */
 414         if (label[0])
 415                 ret = find_label(label, kname, args, initrd_name);
 416         else
 417                 ret = find_label(argv[index], kname, args, initrd_name);
 418
 419         /*
 420          * not found, so assume first argument is kernel name and
 421          * not label name
 422          */
 423         if (ret == -1) {
 424                 if (argv[index])
 425                         StrCpy(kname, argv[index]);
 426                 else
 427                         StrCpy(kname, elilo_opt.default_kernel);
 428         }
 429         /*
 430          * no matter what happened for kname, if user specified
 431          * additional options, they override the ones in the
 432          * config file
 433          */
 434         if (label[0])
 435                 index--;
 436         if (argc > 1+index) {
 437                 /*StrCpy(args, argv[++index]);*/
 438                 while (++index < argc) {
 439                         StrCat(args, L" ");
 440                         StrCat(args, argv[index]);
 441                 }
 442         }
 443         /*
 444          * if initrd specified on command line, it overrides
 445          * the one defined in config file, if any
 446          */
 447         if (elilo_opt.initrd[0] == CHAR_NULL && initrd_name[0] != CHAR_NULL) {
 448                 StrCpy(elilo_opt.initrd, initrd_name);
 449         }
 450
 451         VERB_PRT(1,  { Print(L"kernel     is  '%s'\n", kname);
 452                        Print(L"arguments  are '%s'\n", args);
 453                         if (elilo_opt.initrd[0]) Print(L"initrd      is '%s'\n", elilo_opt.initrd);
 454                       });
 455
 456         if (elilo_opt.prompt == 0) {
 457                 /* minimal printing */
 458                 Print(L"ELILO\n");
 459                 ret = wait_timeout(elilo_opt.delay);
 460                 if (ret != 0) {
 461                         elilo_opt.prompt = 1;
 462                         elilo_opt.timeout =  ELILO_TIMEOUT_INFINITY;
 463                         goto restart;
 464                 }
 465         }
 466
 467         /*
 468          * add the device name, if not already specified,
 469          * so that we know where we came from
 470          */
 471         slash_pos     = StrChr(kname, L'/');
 472         backslash_pos = StrChr(kname, L'\\');
 473         colon_pos     = StrChr(kname, L':');
 474
 475         if (backslash_pos && backslash_pos < slash_pos) slash_pos = backslash_pos;
 476
 477         if (colon_pos == NULL || (slash_pos && (slash_pos < colon_pos))) {
 478                 StrCpy(devname, fops_bootdev_name());
 479                 StrCat(devname, L":");
 480
 481                 /* the default path is always terminated with a separator */
 482                 if (kname[0] != L'/' && kname[0] != L'\\') {
 483                         fops_getdefault_path(dpath,FILENAME_MAXLEN);
 484                         StrCat(devname, dpath);
 485                 }
 486         } else {
 487                 devname[0] = CHAR_NULL;
 488         }
 489
 490         /*
 491          * create final argument list to the kernel
 492          */
 493         len = StrLen(BOOT_IMG_STR)      /* BOOT_IMAGE= */
 494              +StrLen(devname)           /* device name */
 495              +StrLen(kname)             /* kernel name */
 496              +1                         /* space */
 497              +StrLen(args);             /* args length */
 498
 499         if (len >= CMDLINE_MAXLEN-1) {
 500                 SetTextAttr(EFI_TEXT_ATTR(EFI_LIGHTGRAY,EFI_BLACK));
 501                 ClearScreen();
 502                 ERR_PRT((L" arguments list too long cannot fit BOOT_IMAGE\n"));
 503                 return -1;
 504         }
 505         StrCpy(cmdline, L"BOOT_IMAGE=");
 506         StrCat(cmdline, devname);
 507         StrCat(cmdline, kname);
 508         StrCat(cmdline, L" ");
 509         StrCat(cmdline, args);
 510
 511         VERB_PRT(3, Print(L"final command line is '%s'\n", cmdline));
 512
 513         return 0;
 514 }
 515
 516 static INTN
 517 textmenu_probe(EFI_HANDLE dev)
 518 {
 519         /* this chooser always works */
 520         return 0;
 521 }
 522
 523 chooser_t textmenu_chooser={
 524         L"textmenu",
 525         textmenu_probe,
 526         textmenu_choose
 527 };
 528