usr.sbin/bluetooth/bthidd/kbd.c

   1 /*
   2  * kbd.c
   3  */
   4
   5 /*-
   6  * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
   7  *
   8  * Copyright (c) 2006 Maksim Yevmenkin <m_evmenkin@yahoo.com>
   9  * All rights reserved.
  10  *
  11  * Redistribution and use in source and binary forms, with or without
  12  * modification, are permitted provided that the following conditions
  13  * are met:
  14  * 1. Redistributions of source code must retain the above copyright
  15  *    notice, this list of conditions and the following disclaimer.
  16  * 2. Redistributions in binary form must reproduce the above copyright
  17  *    notice, this list of conditions and the following disclaimer in the
  18  *    documentation and/or other materials provided with the distribution.
  19  *
  20  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
  21  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  22  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  23  * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
  24  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  25  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  26  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  27  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  28  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  29  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  30  * SUCH DAMAGE.
  31  *
  32  * $Id: kbd.c,v 1.4 2006/09/07 21:06:53 max Exp $
  33  * $FreeBSD$
  34  */
  35
  36 #include <sys/consio.h>
  37 #include <sys/ioctl.h>
  38 #include <sys/kbio.h>
  39 #include <sys/queue.h>
  40 #include <sys/wait.h>
  41 #include <assert.h>
  42 #define L2CAP_SOCKET_CHECKED
  43 #include <bluetooth.h>
  44 #include <dev/usb/usb.h>
  45 #include <dev/usb/usbhid.h>
  46 #include <dev/vkbd/vkbd_var.h>
  47 #include <errno.h>
  48 #include <fcntl.h>
  49 #include <limits.h>
  50 #include <stdarg.h>
  51 #include <stdio.h>
  52 #include <stdlib.h>
  53 #include <string.h>
  54 #include <syslog.h>
  55 #include <unistd.h>
  56 #include <usbhid.h>
  57 #include "bthid_config.h"
  58 #include "bthidd.h"
  59 #include "kbd.h"
  60
  61 static void     kbd_write(bitstr_t *m, int32_t fb, int32_t make, int32_t fd);
  62 static int32_t  kbd_xlate(int32_t code, int32_t make, int32_t *b, int32_t const *eob);
  63
  64 /*
  65  * HID code to PS/2 set 1 code translation table.
  66  *
  67  * http://www.microsoft.com/whdc/device/input/Scancode.mspx
  68  *
  69  * The table only contains "make" (key pressed) codes.
  70  * The "break" (key released) code is generated as "make" | 0x80
  71  */
  72
  73 #define E0PREFIX        (1U << 31)
  74 #define NOBREAK         (1 << 30)
  75 #define CODEMASK        (~(E0PREFIX|NOBREAK))
  76
  77 static int32_t const    x[] =
  78 {
  79 /*==================================================*/
  80 /* Name                   HID code    Make     Break*/
  81 /*==================================================*/
  82 /* No Event                     00 */ -1,   /* None */
  83 /* Overrun Error                01 */ NOBREAK|0xFF, /* None */
  84 /* POST Fail                    02 */ NOBREAK|0xFC, /* None */
  85 /* ErrorUndefined               03 */ -1,   /* Unassigned */
  86 /* a A                          04 */ 0x1E, /* 9E */
  87 /* b B                          05 */ 0x30, /* B0 */
  88 /* c C                          06 */ 0x2E, /* AE */
  89 /* d D                          07 */ 0x20, /* A0 */
  90 /* e E                          08 */ 0x12, /* 92 */
  91 /* f F                          09 */ 0x21, /* A1 */
  92 /* g G                          0A */ 0x22, /* A2 */
  93 /* h H                          0B */ 0x23, /* A3 */
  94 /* i I                          0C */ 0x17, /* 97 */
  95 /* j J                          0D */ 0x24, /* A4 */
  96 /* k K                          0E */ 0x25, /* A5 */
  97 /* l L                          0F */ 0x26, /* A6 */
  98 /* m M                          10 */ 0x32, /* B2 */
  99 /* n N                          11 */ 0x31, /* B1 */
 100 /* o O                          12 */ 0x18, /* 98 */
 101 /* p P                          13 */ 0x19, /* 99 */
 102 /* q Q                          14 */ 0x10, /* 90 */
 103 /* r R                          15 */ 0x13, /* 93 */
 104 /* s S                          16 */ 0x1F, /* 9F */
 105 /* t T                          17 */ 0x14, /* 94 */
 106 /* u U                          18 */ 0x16, /* 96 */
 107 /* v V                          19 */ 0x2F, /* AF */
 108 /* w W                          1A */ 0x11, /* 91 */
 109 /* x X                          1B */ 0x2D, /* AD */
 110 /* y Y                          1C */ 0x15, /* 95 */
 111 /* z Z                          1D */ 0x2C, /* AC */
 112 /* 1 !                          1E */ 0x02, /* 82 */
 113 /* 2 @                          1F */ 0x03, /* 83 */
 114 /* 3 #                          20 */ 0x04, /* 84 */
 115 /* 4 $                          21 */ 0x05, /* 85 */
 116 /* 5 %                          22 */ 0x06, /* 86 */
 117 /* 6 ^                          23 */ 0x07, /* 87 */
 118 /* 7 &                          24 */ 0x08, /* 88 */
 119 /* 8 *                          25 */ 0x09, /* 89 */
 120 /* 9 (                          26 */ 0x0A, /* 8A */
 121 /* 0 )                          27 */ 0x0B, /* 8B */
 122 /* Return                       28 */ 0x1C, /* 9C */
 123 /* Escape                       29 */ 0x01, /* 81 */
 124 /* Backspace                    2A */ 0x0E, /* 8E */
 125 /* Tab                          2B */ 0x0F, /* 8F */
 126 /* Space                        2C */ 0x39, /* B9 */
 127 /* - _                          2D */ 0x0C, /* 8C */
 128 /* = +                          2E */ 0x0D, /* 8D */
 129 /* [ {                          2F */ 0x1A, /* 9A */
 130 /* ] }                          30 */ 0x1B, /* 9B */
 131 /* \ |                          31 */ 0x2B, /* AB */
 132 /* Europe 1                     32 */ 0x2B, /* AB */
 133 /* ; :                          33 */ 0x27, /* A7 */
 134 /* " '                          34 */ 0x28, /* A8 */
 135 /* ` ~                          35 */ 0x29, /* A9 */
 136 /* comma <                      36 */ 0x33, /* B3 */
 137 /* . >                          37 */ 0x34, /* B4 */
 138 /* / ?                          38 */ 0x35, /* B5 */
 139 /* Caps Lock                    39 */ 0x3A, /* BA */
 140 /* F1                           3A */ 0x3B, /* BB */
 141 /* F2                           3B */ 0x3C, /* BC */
 142 /* F3                           3C */ 0x3D, /* BD */
 143 /* F4                           3D */ 0x3E, /* BE */
 144 /* F5                           3E */ 0x3F, /* BF */
 145 /* F6                           3F */ 0x40, /* C0 */
 146 /* F7                           40 */ 0x41, /* C1 */
 147 /* F8                           41 */ 0x42, /* C2 */
 148 /* F9                           42 */ 0x43, /* C3 */
 149 /* F10                          43 */ 0x44, /* C4 */
 150 /* F11                          44 */ 0x57, /* D7 */
 151 /* F12                          45 */ 0x58, /* D8 */
 152 /* Print Screen                 46 */ E0PREFIX|0x37, /* E0 B7 */
 153 /* Scroll Lock                  47 */ 0x46, /* C6 */
 154 #if 0
 155 /* Break (Ctrl-Pause)           48 */ E0 46 E0 C6, /* None */
 156 /* Pause                        48 */ E1 1D 45 E1 9D C5, /* None */
 157 #else
 158 /* Break (Ctrl-Pause)/Pause     48 */ NOBREAK /* Special case */, /* None */
 159 #endif
 160 /* Insert                       49 */ E0PREFIX|0x52, /* E0 D2 */
 161 /* Home                         4A */ E0PREFIX|0x47, /* E0 C7 */
 162 /* Page Up                      4B */ E0PREFIX|0x49, /* E0 C9 */
 163 /* Delete                       4C */ E0PREFIX|0x53, /* E0 D3 */
 164 /* End                          4D */ E0PREFIX|0x4F, /* E0 CF */
 165 /* Page Down                    4E */ E0PREFIX|0x51, /* E0 D1 */
 166 /* Right Arrow                  4F */ E0PREFIX|0x4D, /* E0 CD */
 167 /* Left Arrow                   50 */ E0PREFIX|0x4B, /* E0 CB */
 168 /* Down Arrow                   51 */ E0PREFIX|0x50, /* E0 D0 */
 169 /* Up Arrow                     52 */ E0PREFIX|0x48, /* E0 C8 */
 170 /* Num Lock                     53 */ 0x45, /* C5 */
 171 /* Keypad /                     54 */ E0PREFIX|0x35, /* E0 B5 */
 172 /* Keypad *                     55 */ 0x37, /* B7 */
 173 /* Keypad -                     56 */ 0x4A, /* CA */
 174 /* Keypad +                     57 */ 0x4E, /* CE */
 175 /* Keypad Enter                 58 */ E0PREFIX|0x1C, /* E0 9C */
 176 /* Keypad 1 End                 59 */ 0x4F, /* CF */
 177 /* Keypad 2 Down                5A */ 0x50, /* D0 */
 178 /* Keypad 3 PageDn              5B */ 0x51, /* D1 */
 179 /* Keypad 4 Left                5C */ 0x4B, /* CB */
 180 /* Keypad 5                     5D */ 0x4C, /* CC */
 181 /* Keypad 6 Right               5E */ 0x4D, /* CD */
 182 /* Keypad 7 Home                5F */ 0x47, /* C7 */
 183 /* Keypad 8 Up                  60 */ 0x48, /* C8 */
 184 /* Keypad 9 PageUp              61 */ 0x49, /* C9 */
 185 /* Keypad 0 Insert              62 */ 0x52, /* D2 */
 186 /* Keypad . Delete              63 */ 0x53, /* D3 */
 187 /* Europe 2                     64 */ 0x56, /* D6 */
 188 /* App                          65 */ E0PREFIX|0x5D, /* E0 DD */
 189 /* Keyboard Power               66 */ E0PREFIX|0x5E, /* E0 DE */
 190 /* Keypad =                     67 */ 0x59, /* D9 */
 191 /* F13                          68 */ 0x64, /* E4 */
 192 /* F14                          69 */ 0x65, /* E5 */
 193 /* F15                          6A */ 0x66, /* E6 */
 194 /* F16                          6B */ 0x67, /* E7 */
 195 /* F17                          6C */ 0x68, /* E8 */
 196 /* F18                          6D */ 0x69, /* E9 */
 197 /* F19                          6E */ 0x6A, /* EA */
 198 /* F20                          6F */ 0x6B, /* EB */
 199 /* F21                          70 */ 0x6C, /* EC */
 200 /* F22                          71 */ 0x6D, /* ED */
 201 /* F23                          72 */ 0x6E, /* EE */
 202 /* F24                          73 */ 0x76, /* F6 */
 203 /* Keyboard Execute             74 */ -1,   /* Unassigned */
 204 /* Keyboard Help                75 */ -1,   /* Unassigned */
 205 /* Keyboard Menu                76 */ -1,   /* Unassigned */
 206 /* Keyboard Select              77 */ -1,   /* Unassigned */
 207 /* Keyboard Stop                78 */ -1,   /* Unassigned */
 208 /* Keyboard Again               79 */ -1,   /* Unassigned */
 209 /* Keyboard Undo                7A */ -1,   /* Unassigned */
 210 /* Keyboard Cut                 7B */ -1,   /* Unassigned */
 211 /* Keyboard Copy                7C */ -1,   /* Unassigned */
 212 /* Keyboard Paste               7D */ -1,   /* Unassigned */
 213 /* Keyboard Find                7E */ -1,   /* Unassigned */
 214 /* Keyboard Mute                7F */ -1,   /* Unassigned */
 215 /* Keyboard Volume Up           80 */ -1,   /* Unassigned */
 216 /* Keyboard Volume Dn           81 */ -1,   /* Unassigned */
 217 /* Keyboard Locking Caps Lock   82 */ -1,   /* Unassigned */
 218 /* Keyboard Locking Num Lock    83 */ -1,   /* Unassigned */
 219 /* Keyboard Locking Scroll Lock 84 */ -1,   /* Unassigned */
 220 /* Keypad comma                 85 */ 0x7E, /* FE */
 221 /* Keyboard Equal Sign          86 */ -1,   /* Unassigned */
 222 /* Keyboard Int'l 1             87 */ 0x73, /* F3 */
 223 /* Keyboard Int'l 2             88 */ 0x70, /* F0 */
 224 /* Keyboard Int'l 2             89 */ 0x7D, /* FD */
 225 /* Keyboard Int'l 4             8A */ 0x79, /* F9 */
 226 /* Keyboard Int'l 5             8B */ 0x7B, /* FB */
 227 /* Keyboard Int'l 6             8C */ 0x5C, /* DC */
 228 /* Keyboard Int'l 7             8D */ -1,   /* Unassigned */
 229 /* Keyboard Int'l 8             8E */ -1,   /* Unassigned */
 230 /* Keyboard Int'l 9             8F */ -1,   /* Unassigned */
 231 /* Keyboard Lang 1              90 */ 0x71, /* Kana */
 232 /* Keyboard Lang 2              91 */ 0x72, /* Eisu */
 233 /* Keyboard Lang 3              92 */ 0x78, /* F8 */
 234 /* Keyboard Lang 4              93 */ 0x77, /* F7 */
 235 /* Keyboard Lang 5              94 */ 0x76, /* F6 */
 236 /* Keyboard Lang 6              95 */ -1,   /* Unassigned */
 237 /* Keyboard Lang 7              96 */ -1,   /* Unassigned */
 238 /* Keyboard Lang 8              97 */ -1,   /* Unassigned */
 239 /* Keyboard Lang 9              98 */ -1,   /* Unassigned */
 240 /* Keyboard Alternate Erase     99 */ -1,   /* Unassigned */
 241 /* Keyboard SysReq/Attention    9A */ -1,   /* Unassigned */
 242 /* Keyboard Cancel              9B */ -1,   /* Unassigned */
 243 /* Keyboard Clear               9C */ -1,   /* Unassigned */
 244 /* Keyboard Prior               9D */ -1,   /* Unassigned */
 245 /* Keyboard Return              9E */ -1,   /* Unassigned */
 246 /* Keyboard Separator           9F */ -1,   /* Unassigned */
 247 /* Keyboard Out                 A0 */ -1,   /* Unassigned */
 248 /* Keyboard Oper                A1 */ -1,   /* Unassigned */
 249 /* Keyboard Clear/Again         A2 */ -1,   /* Unassigned */
 250 /* Keyboard CrSel/Props         A3 */ -1,   /* Unassigned */
 251 /* Keyboard ExSel               A4 */ -1,   /* Unassigned */
 252 /* Reserved                     A5 */ -1,   /* Reserved */
 253 /* Reserved                     A6 */ -1,   /* Reserved */
 254 /* Reserved                     A7 */ -1,   /* Reserved */
 255 /* Reserved                     A8 */ -1,   /* Reserved */
 256 /* Reserved                     A9 */ -1,   /* Reserved */
 257 /* Reserved                     AA */ -1,   /* Reserved */
 258 /* Reserved                     AB */ -1,   /* Reserved */
 259 /* Reserved                     AC */ -1,   /* Reserved */
 260 /* Reserved                     AD */ -1,   /* Reserved */
 261 /* Reserved                     AE */ -1,   /* Reserved */
 262 /* Reserved                     AF */ -1,   /* Reserved */
 263 /* Reserved                     B0 */ -1,   /* Reserved */
 264 /* Reserved                     B1 */ -1,   /* Reserved */
 265 /* Reserved                     B2 */ -1,   /* Reserved */
 266 /* Reserved                     B3 */ -1,   /* Reserved */
 267 /* Reserved                     B4 */ -1,   /* Reserved */
 268 /* Reserved                     B5 */ -1,   /* Reserved */
 269 /* Reserved                     B6 */ -1,   /* Reserved */
 270 /* Reserved                     B7 */ -1,   /* Reserved */
 271 /* Reserved                     B8 */ -1,   /* Reserved */
 272 /* Reserved                     B9 */ -1,   /* Reserved */
 273 /* Reserved                     BA */ -1,   /* Reserved */
 274 /* Reserved                     BB */ -1,   /* Reserved */
 275 /* Reserved                     BC */ -1,   /* Reserved */
 276 /* Reserved                     BD */ -1,   /* Reserved */
 277 /* Reserved                     BE */ -1,   /* Reserved */
 278 /* Reserved                     BF */ -1,   /* Reserved */
 279 /* Reserved                     C0 */ -1,   /* Reserved */
 280 /* Reserved                     C1 */ -1,   /* Reserved */
 281 /* Reserved                     C2 */ -1,   /* Reserved */
 282 /* Reserved                     C3 */ -1,   /* Reserved */
 283 /* Reserved                     C4 */ -1,   /* Reserved */
 284 /* Reserved                     C5 */ -1,   /* Reserved */
 285 /* Reserved                     C6 */ -1,   /* Reserved */
 286 /* Reserved                     C7 */ -1,   /* Reserved */
 287 /* Reserved                     C8 */ -1,   /* Reserved */
 288 /* Reserved                     C9 */ -1,   /* Reserved */
 289 /* Reserved                     CA */ -1,   /* Reserved */
 290 /* Reserved                     CB */ -1,   /* Reserved */
 291 /* Reserved                     CC */ -1,   /* Reserved */
 292 /* Reserved                     CD */ -1,   /* Reserved */
 293 /* Reserved                     CE */ -1,   /* Reserved */
 294 /* Reserved                     CF */ -1,   /* Reserved */
 295 /* Reserved                     D0 */ -1,   /* Reserved */
 296 /* Reserved                     D1 */ -1,   /* Reserved */
 297 /* Reserved                     D2 */ -1,   /* Reserved */
 298 /* Reserved                     D3 */ -1,   /* Reserved */
 299 /* Reserved                     D4 */ -1,   /* Reserved */
 300 /* Reserved                     D5 */ -1,   /* Reserved */
 301 /* Reserved                     D6 */ -1,   /* Reserved */
 302 /* Reserved                     D7 */ -1,   /* Reserved */
 303 /* Reserved                     D8 */ -1,   /* Reserved */
 304 /* Reserved                     D9 */ -1,   /* Reserved */
 305 /* Reserved                     DA */ -1,   /* Reserved */
 306 /* Reserved                     DB */ -1,   /* Reserved */
 307 /* Reserved                     DC */ -1,   /* Reserved */
 308 /* Reserved                     DD */ -1,   /* Reserved */
 309 /* Reserved                     DE */ -1,   /* Reserved */
 310 /* Reserved                     DF */ -1,   /* Reserved */
 311 /* Left Control                 E0 */ 0x1D, /* 9D */
 312 /* Left Shift                   E1 */ 0x2A, /* AA */
 313 /* Left Alt                     E2 */ 0x38, /* B8 */
 314 /* Left GUI                     E3 */ E0PREFIX|0x5B, /* E0 DB */
 315 /* Right Control                E4 */ E0PREFIX|0x1D, /* E0 9D */
 316 /* Right Shift                  E5 */ 0x36, /* B6 */
 317 /* Right Alt                    E6 */ E0PREFIX|0x38, /* E0 B8 */
 318 /* Right GUI                    E7 */ E0PREFIX|0x5C  /* E0 DC */
 319 };
 320
 321 #define xsize   ((int32_t)(sizeof(x)/sizeof(x[0])))
 322
 323 /*
 324  * Get a max HID keycode (aligned)
 325  */
 326
 327 int32_t
 328 kbd_maxkey(void)
 329 {
 330         return (xsize);
 331 }
 332
 333 /*
 334  * Process keys
 335  */
 336
 337 int32_t
 338 kbd_process_keys(bthid_session_p s)
 339 {
 340         bitstr_t        diff[bitstr_size(xsize)];
 341         int32_t         f1, f2, i;
 342
 343         assert(s != NULL);
 344         assert(s->srv != NULL);
 345
 346         /* Check if the new keys have been pressed */
 347         bit_ffs(s->keys1, xsize, &f1);
 348
 349         /* Check if old keys still pressed */
 350         bit_ffs(s->keys2, xsize, &f2);
 351
 352         if (f1 == -1) {
 353                 /* no new key pressed */
 354                 if (f2 != -1) {
 355                         /* release old keys */
 356                         kbd_write(s->keys2, f2, 0, s->vkbd);
 357                         memset(s->keys2, 0, bitstr_size(xsize));
 358                 }
 359
 360                 return (0);
 361         }
 362
 363         if (f2 == -1) {
 364                 /* no old keys, but new keys pressed */
 365                 assert(f1 != -1);
 366
 367                 memcpy(s->keys2, s->keys1, bitstr_size(xsize));
 368                 kbd_write(s->keys1, f1, 1, s->vkbd);
 369                 memset(s->keys1, 0, bitstr_size(xsize));
 370
 371                 return (0);
 372         }
 373
 374         /* new keys got pressed, old keys got released */
 375         memset(diff, 0, bitstr_size(xsize));
 376
 377         for (i = f2; i < xsize; i ++) {
 378                 if (bit_test(s->keys2, i)) {
 379                         if (!bit_test(s->keys1, i)) {
 380                                 bit_clear(s->keys2, i);
 381                                 bit_set(diff, i);
 382                         }
 383                 }
 384         }
 385
 386         for (i = f1; i < xsize; i++) {
 387                 if (bit_test(s->keys1, i)) {
 388                         if (!bit_test(s->keys2, i))
 389                                 bit_set(s->keys2, i);
 390                         else
 391                                 bit_clear(s->keys1, i);
 392                 }
 393         }
 394
 395         bit_ffs(diff, xsize, &f2);
 396         if (f2 > 0)
 397                 kbd_write(diff, f2, 0, s->vkbd);
 398
 399         bit_ffs(s->keys1, xsize, &f1);
 400         if (f1 > 0) {
 401                 kbd_write(s->keys1, f1, 1, s->vkbd);
 402                 memset(s->keys1, 0, bitstr_size(xsize));
 403         }
 404
 405         return (0);
 406 }
 407
 408 /*
 409  * Translate given keymap and write keyscodes
 410  */
 411
 412 static void
 413 kbd_write(bitstr_t *m, int32_t fb, int32_t make, int32_t fd)
 414 {
 415         int32_t i, *b, *eob, n, buf[64];
 416
 417         b = buf;
 418         eob = b + sizeof(buf)/sizeof(buf[0]);
 419         i = fb;
 420
 421         while (i < xsize) {
 422                 if (bit_test(m, i)) {
 423                         n = kbd_xlate(i, make, b, eob);
 424                         if (n == -1) {
 425                                 write(fd, buf, (b - buf) * sizeof(buf[0]));
 426                                 b = buf;
 427                                 continue;
 428                         }
 429
 430                         b += n;
 431                 }
 432
 433                 i ++;
 434         }
 435
 436         if (b != buf)
 437                 write(fd, buf, (b - buf) * sizeof(buf[0]));
 438 }
 439
 440 /*
 441  * Translate HID code into PS/2 code and put codes into buffer b.
 442  * Returns the number of codes put in b. Return -1 if buffer has not
 443  * enough space.
 444  */
 445
 446 #undef  PUT
 447 #define PUT(c, n, b, eob)       \
 448 do {                            \
 449         if ((b) >= (eob))       \
 450                 return (-1);    \
 451         *(b) = (c);             \
 452         (b) ++;                 \
 453         (n) ++;                 \
 454 } while (0)
 455
 456 static int32_t
 457 kbd_xlate(int32_t code, int32_t make, int32_t *b, int32_t const *eob)
 458 {
 459         int32_t c, n;
 460
 461         n = 0;
 462
 463         if (code >= xsize)
 464                 return (0); /* HID code is not in the table */
 465
 466         /* Handle special case - Pause/Break */
 467         if (code == 0x48) {
 468                 if (!make)
 469                         return (0); /* No break code */
 470
 471 #if 0
 472 XXX FIXME
 473                 if (ctrl_is_pressed) {
 474                         /* Break (Ctrl-Pause) */
 475                         PUT(0xe0, n, b, eob);
 476                         PUT(0x46, n, b, eob);
 477                         PUT(0xe0, n, b, eob);
 478                         PUT(0xc6, n, b, eob);
 479                 } else {
 480                         /* Pause */
 481                         PUT(0xe1, n, b, eob);
 482                         PUT(0x1d, n, b, eob);
 483                         PUT(0x45, n, b, eob);
 484                         PUT(0xe1, n, b, eob);
 485                         PUT(0x9d, n, b, eob);
 486                         PUT(0xc5, n, b, eob);
 487                 }
 488 #endif
 489
 490                 return (n);
 491         }
 492
 493         if ((c = x[code]) == -1)
 494                 return (0); /* HID code translation is not defined */
 495
 496         if (make) {
 497                 if (c & E0PREFIX)
 498                         PUT(0xe0, n, b, eob);
 499
 500                 PUT((c & CODEMASK), n, b, eob);
 501         } else if (!(c & NOBREAK)) {
 502                 if (c & E0PREFIX)
 503                         PUT(0xe0, n, b, eob);
 504
 505                 PUT((0x80|(c & CODEMASK)), n, b, eob);
 506         }
 507
 508         return (n);
 509 }
 510
 511 /*
 512  * Process status change from vkbd(4)
 513  */
 514
 515 int32_t
 516 kbd_status_changed(bthid_session_p s, uint8_t *data, int32_t len)
 517 {
 518         vkbd_status_t   st;
 519         uint8_t         found, report_id;
 520         hid_device_p    hid_device;
 521         hid_data_t      d;
 522         hid_item_t      h;
 523
 524         assert(s != NULL);
 525         assert(len == sizeof(vkbd_status_t));
 526
 527         memcpy(&st, data, sizeof(st));
 528         found = 0;
 529         report_id = NO_REPORT_ID;
 530
 531         hid_device = get_hid_device(&s->bdaddr);
 532         assert(hid_device != NULL);
 533
 534         data[0] = 0xa2; /* DATA output (HID output report) */
 535         data[1] = 0x00;
 536         data[2] = 0x00;
 537
 538         for (d = hid_start_parse(hid_device->desc, 1 << hid_output, -1);
 539              hid_get_item(d, &h) > 0; ) {
 540                 if (HID_PAGE(h.usage) == HUP_LEDS) {
 541                         found++;
 542
 543                         if (report_id == NO_REPORT_ID)
 544                                 report_id = h.report_ID;
 545                         else if (h.report_ID != report_id)
 546                                 syslog(LOG_WARNING, "Output HID report IDs " \
 547                                         "for %s do not match: %d vs. %d. " \
 548                                         "Please report",
 549                                         bt_ntoa(&s->bdaddr, NULL),
 550                                         h.report_ID, report_id);
 551
 552                         switch(HID_USAGE(h.usage)) {
 553                         case 0x01: /* Num Lock LED */
 554                                 if (st.leds & LED_NUM)
 555                                         hid_set_data(&data[1], &h, 1);
 556                                 break;
 557
 558                         case 0x02: /* Caps Lock LED */
 559                                 if (st.leds & LED_CAP)
 560                                         hid_set_data(&data[1], &h, 1);
 561                                 break;
 562
 563                         case 0x03: /* Scroll Lock LED */
 564                                 if (st.leds & LED_SCR)
 565                                         hid_set_data(&data[1], &h, 1);
 566                                 break;
 567
 568                         /* XXX add other LEDs ? */
 569                         }
 570                 }
 571         }
 572         hid_end_parse(d);
 573
 574         if (report_id != NO_REPORT_ID) {
 575                 data[2] = data[1];
 576                 data[1] = report_id;
 577         }
 578
 579         if (found)
 580                 write(s->intr, data, (report_id != NO_REPORT_ID) ? 3 : 2);
 581
 582         return (0);
 583 }
 584