74dbd24466
Use struct preboot * and not void * for handle. All users updated. (grub_loader_unregister_preboot_hook): Likewise.
386 lines
11 KiB
C
386 lines
11 KiB
C
/* sendkey.c - fake keystroke. */
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/*
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* GRUB -- GRand Unified Bootloader
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* Copyright (C) 2009 Free Software Foundation, Inc.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*/
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#include <grub/types.h>
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#include <grub/misc.h>
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#include <grub/mm.h>
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#include <grub/err.h>
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#include <grub/dl.h>
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#include <grub/extcmd.h>
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#include <grub/cpu/io.h>
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#include <grub/loader.h>
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#include <grub/i18n.h>
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GRUB_MOD_LICENSE ("GPLv2+");
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static char sendkey[0x20];
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/* Length of sendkey. */
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static int keylen = 0;
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static int noled = 0;
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static const struct grub_arg_option options[] =
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{
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{"num", 'n', 0, N_("set numlock mode"), "[on|off]", ARG_TYPE_STRING},
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{"caps", 'c', 0, N_("set capslock mode"), "[on|off]", ARG_TYPE_STRING},
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{"scroll", 's', 0, N_("set scrolllock mode"), "[on|off]", ARG_TYPE_STRING},
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{"insert", 0, 0, N_("set insert mode"), "[on|off]", ARG_TYPE_STRING},
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{"pause", 0, 0, N_("set pause mode"), "[on|off]", ARG_TYPE_STRING},
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{"left-shift", 0, 0, N_("press left shift"), "[on|off]", ARG_TYPE_STRING},
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{"right-shift", 0, 0, N_("press right shift"), "[on|off]", ARG_TYPE_STRING},
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{"sysrq", 0, 0, N_("press SysRq"), "[on|off]", ARG_TYPE_STRING},
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{"numkey", 0, 0, N_("press NumLock key"), "[on|off]", ARG_TYPE_STRING},
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{"capskey", 0, 0, N_("press CapsLock key"), "[on|off]", ARG_TYPE_STRING},
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{"scrollkey", 0, 0, N_("press ScrollLock key"), "[on|off]", ARG_TYPE_STRING},
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{"insertkey", 0, 0, N_("press Insert key"), "[on|off]", ARG_TYPE_STRING},
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{"left-alt", 0, 0, N_("press left alt"), "[on|off]", ARG_TYPE_STRING},
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{"right-alt", 0, 0, N_("press right alt"), "[on|off]", ARG_TYPE_STRING},
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{"left-ctrl", 0, 0, N_("press left ctrl"), "[on|off]", ARG_TYPE_STRING},
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{"right-ctrl", 0, 0, N_("press right ctrl"), "[on|off]", ARG_TYPE_STRING},
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{"no-led", 0, 0, N_("don't update LED state"), 0, 0},
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{0, 0, 0, 0, 0, 0}
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};
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static int simple_flag_offsets[]
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= {5, 6, 4, 7, 11, 1, 0, 10, 13, 14, 12, 15, 9, 3, 8, 2};
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static grub_uint32_t andmask = 0xffffffff, ormask = 0;
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struct
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keysym
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{
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const char *unshifted_name; /* the name in unshifted state */
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const char *shifted_name; /* the name in shifted state */
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unsigned char unshifted_ascii; /* the ascii code in unshifted state */
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unsigned char shifted_ascii; /* the ascii code in shifted state */
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unsigned char keycode; /* keyboard scancode */
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};
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/* The table for key symbols. If the "shifted" member of an entry is
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NULL, the entry does not have shifted state. Copied from GRUB Legacy setkey fuction */
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static struct keysym keysym_table[] =
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{
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{"escape", 0, 0x1b, 0, 0x01},
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{"1", "exclam", '1', '!', 0x02},
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{"2", "at", '2', '@', 0x03},
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{"3", "numbersign", '3', '#', 0x04},
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{"4", "dollar", '4', '$', 0x05},
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{"5", "percent", '5', '%', 0x06},
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{"6", "caret", '6', '^', 0x07},
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{"7", "ampersand", '7', '&', 0x08},
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{"8", "asterisk", '8', '*', 0x09},
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{"9", "parenleft", '9', '(', 0x0a},
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{"0", "parenright", '0', ')', 0x0b},
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{"minus", "underscore", '-', '_', 0x0c},
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{"equal", "plus", '=', '+', 0x0d},
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{"backspace", 0, '\b', 0, 0x0e},
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{"tab", 0, '\t', 0, 0x0f},
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{"q", "Q", 'q', 'Q', 0x10},
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{"w", "W", 'w', 'W', 0x11},
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{"e", "E", 'e', 'E', 0x12},
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{"r", "R", 'r', 'R', 0x13},
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{"t", "T", 't', 'T', 0x14},
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{"y", "Y", 'y', 'Y', 0x15},
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{"u", "U", 'u', 'U', 0x16},
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{"i", "I", 'i', 'I', 0x17},
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{"o", "O", 'o', 'O', 0x18},
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{"p", "P", 'p', 'P', 0x19},
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{"bracketleft", "braceleft", '[', '{', 0x1a},
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{"bracketright", "braceright", ']', '}', 0x1b},
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{"enter", 0, '\r', 0, 0x1c},
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{"control", 0, 0, 0, 0x1d},
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{"a", "A", 'a', 'A', 0x1e},
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{"s", "S", 's', 'S', 0x1f},
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{"d", "D", 'd', 'D', 0x20},
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{"f", "F", 'f', 'F', 0x21},
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{"g", "G", 'g', 'G', 0x22},
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{"h", "H", 'h', 'H', 0x23},
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{"j", "J", 'j', 'J', 0x24},
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{"k", "K", 'k', 'K', 0x25},
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{"l", "L", 'l', 'L', 0x26},
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{"semicolon", "colon", ';', ':', 0x27},
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{"quote", "doublequote", '\'', '"', 0x28},
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{"backquote", "tilde", '`', '~', 0x29},
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{"shift", 0, 0, 0, 0x2a},
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{"backslash", "bar", '\\', '|', 0x2b},
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{"z", "Z", 'z', 'Z', 0x2c},
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{"x", "X", 'x', 'X', 0x2d},
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{"c", "C", 'c', 'C', 0x2e},
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{"v", "V", 'v', 'V', 0x2f},
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{"b", "B", 'b', 'B', 0x30},
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{"n", "N", 'n', 'N', 0x31},
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{"m", "M", 'm', 'M', 0x32},
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{"comma", "less", ',', '<', 0x33},
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{"period", "greater", '.', '>', 0x34},
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{"slash", "question", '/', '?', 0x35},
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{"rshift", 0, 0, 0, 0x36},
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{"numasterisk", 0, '*', 0, 0x37},
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{"alt", 0, 0, 0, 0x38},
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{"space", 0, ' ', 0, 0x39},
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{"capslock", 0, 0, 0, 0x3a},
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{"F1", 0, 0, 0, 0x3b},
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{"F2", 0, 0, 0, 0x3c},
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{"F3", 0, 0, 0, 0x3d},
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{"F4", 0, 0, 0, 0x3e},
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{"F5", 0, 0, 0, 0x3f},
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{"F6", 0, 0, 0, 0x40},
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{"F7", 0, 0, 0, 0x41},
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{"F8", 0, 0, 0, 0x42},
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{"F9", 0, 0, 0, 0x43},
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{"F10", 0, 0, 0, 0x44},
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{"num7", "numhome", '7', 0, 0x47},
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{"num8", "numup", '8', 0, 0x48},
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{"num9", "numpgup", '9', 0, 0x49},
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{"numminus", 0, '-', 0, 0x4a},
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{"num4", "numleft", '4', 0, 0x4b},
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{"num5", "numcenter", '5', 0, 0x4c},
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{"num6", "numright", '6', 0, 0x4d},
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{"numplus", 0, '-', 0, 0x4e},
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{"num1", "numend", '1', 0, 0x4f},
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{"num2", "numdown", '2', 0, 0x50},
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{"num3", "numpgdown", '3', 0, 0x51},
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{"num0", "numinsert", '0', 0, 0x52},
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{"numperiod", "numdelete", 0, 0x7f, 0x53},
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{"F11", 0, 0, 0, 0x57},
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{"F12", 0, 0, 0, 0x58},
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{"numenter", 0, '\r', 0, 0xe0},
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{"numslash", 0, '/', 0, 0xe0},
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{"delete", 0, 0x7f, 0, 0xe0},
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{"insert", 0, 0xe0, 0, 0x52},
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{"home", 0, 0xe0, 0, 0x47},
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{"end", 0, 0xe0, 0, 0x4f},
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{"pgdown", 0, 0xe0, 0, 0x51},
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{"pgup", 0, 0xe0, 0, 0x49},
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{"down", 0, 0xe0, 0, 0x50},
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{"up", 0, 0xe0, 0, 0x48},
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{"left", 0, 0xe0, 0, 0x4b},
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{"right", 0, 0xe0, 0, 0x4d}
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};
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/* Set a simple flag in flags variable
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OUTOFFSET - offset of flag in FLAGS,
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OP - action id
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*/
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static void
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grub_sendkey_set_simple_flag (int outoffset, int op)
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{
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if (op == 2)
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{
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andmask |= (1 << outoffset);
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ormask &= ~(1 << outoffset);
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}
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else
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{
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andmask &= (~(1 << outoffset));
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if (op == 1)
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ormask |= (1 << outoffset);
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else
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ormask &= ~(1 << outoffset);
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}
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}
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static int
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grub_sendkey_parse_op (struct grub_arg_list state)
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{
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if (! state.set)
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return 2;
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if (grub_strcmp (state.arg, "off") == 0 || grub_strcmp (state.arg, "0") == 0
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|| grub_strcmp (state.arg, "unpress") == 0)
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return 0;
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if (grub_strcmp (state.arg, "on") == 0 || grub_strcmp (state.arg, "1") == 0
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|| grub_strcmp (state.arg, "press") == 0)
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return 1;
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return 2;
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}
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static grub_uint32_t oldflags;
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static grub_err_t
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grub_sendkey_postboot (void)
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{
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/* For convention: pointer to flags. */
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grub_uint32_t *flags = (grub_uint32_t *) 0x417;
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*flags = oldflags;
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*((char *) 0x41a) = 0x1e;
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*((char *) 0x41c) = 0x1e;
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return GRUB_ERR_NONE;
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}
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/* Set keyboard buffer to our sendkey */
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static grub_err_t
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grub_sendkey_preboot (int noret __attribute__ ((unused)))
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{
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/* For convention: pointer to flags. */
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grub_uint32_t *flags = (grub_uint32_t *) 0x417;
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oldflags = *flags;
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/* Set the sendkey. */
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*((char *) 0x41a) = 0x1e;
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*((char *) 0x41c) = keylen + 0x1e;
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grub_memcpy ((char *) 0x41e, sendkey, 0x20);
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/* Transform "any ctrl" to "right ctrl" flag. */
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if (*flags & (1 << 8))
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*flags &= ~(1 << 2);
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/* Transform "any alt" to "right alt" flag. */
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if (*flags & (1 << 9))
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*flags &= ~(1 << 3);
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*flags = (*flags & andmask) | ormask;
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/* Transform "right ctrl" to "any ctrl" flag. */
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if (*flags & (1 << 8))
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*flags |= (1 << 2);
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/* Transform "right alt" to "any alt" flag. */
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if (*flags & (1 << 9))
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*flags |= (1 << 3);
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/* Write new LED state */
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if (!noled)
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{
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int value = 0;
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int failed;
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/* Try 5 times */
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for (failed = 0; failed < 5; failed++)
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{
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value = 0;
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/* Send command change LEDs */
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grub_outb (0xed, 0x60);
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/* Wait */
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do
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value = grub_inb (0x60);
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while ((value != 0xfa) && (value != 0xfe));
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if (value == 0xfa)
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{
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/* Set new LEDs*/
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grub_outb ((*flags >> 4) & 7, 0x60);
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break;
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}
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}
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}
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return GRUB_ERR_NONE;
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}
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static grub_err_t
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grub_cmd_sendkey (grub_extcmd_context_t ctxt, int argc, char **args)
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{
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struct grub_arg_list *state = ctxt->state;
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auto int find_key_code (char *key);
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auto int find_ascii_code (char *key);
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int find_key_code (char *key)
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{
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unsigned i;
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for (i = 0; i < sizeof (keysym_table) / sizeof (keysym_table[0]); i++)
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{
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if (keysym_table[i].unshifted_name
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&& grub_strcmp (key, keysym_table[i].unshifted_name) == 0)
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return keysym_table[i].keycode;
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else if (keysym_table[i].shifted_name
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&& grub_strcmp (key, keysym_table[i].shifted_name) == 0)
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return keysym_table[i].keycode;
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}
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return 0;
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}
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int find_ascii_code (char *key)
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{
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unsigned i;
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for (i = 0; i < sizeof (keysym_table) / sizeof (keysym_table[0]); i++)
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{
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if (keysym_table[i].unshifted_name
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&& grub_strcmp (key, keysym_table[i].unshifted_name) == 0)
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return keysym_table[i].unshifted_ascii;
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else if (keysym_table[i].shifted_name
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&& grub_strcmp (key, keysym_table[i].shifted_name) == 0)
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return keysym_table[i].shifted_ascii;
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}
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return 0;
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}
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andmask = 0xffffffff;
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ormask = 0;
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{
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int i;
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keylen = 0;
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for (i = 0; i < argc && keylen < 0x20; i++)
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{
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int key_code;
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key_code = find_key_code (args[i]);
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if (key_code)
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{
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sendkey[keylen++] = find_ascii_code (args[i]);
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sendkey[keylen++] = key_code;
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}
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}
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}
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{
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unsigned i;
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for (i = 0; i < sizeof (simple_flag_offsets)
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/ sizeof (simple_flag_offsets[0]); i++)
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grub_sendkey_set_simple_flag (simple_flag_offsets[i],
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grub_sendkey_parse_op(state[i]));
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}
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/* Set noled. */
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noled = (state[sizeof (simple_flag_offsets)
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/ sizeof (simple_flag_offsets[0])].set);
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return GRUB_ERR_NONE;
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}
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static grub_extcmd_t cmd;
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static struct grub_preboot *preboot_hook;
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GRUB_MOD_INIT (sendkey)
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{
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cmd = grub_register_extcmd ("sendkey", grub_cmd_sendkey, 0,
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N_("[KEYSTROKE1] [KEYSTROKE2] ..."),
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N_("Emulate a keystroke"), options);
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preboot_hook
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= grub_loader_register_preboot_hook (grub_sendkey_preboot,
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grub_sendkey_postboot,
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GRUB_LOADER_PREBOOT_HOOK_PRIO_CONSOLE);
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}
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GRUB_MOD_FINI (sendkey)
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{
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grub_unregister_extcmd (cmd);
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grub_loader_unregister_preboot_hook (preboot_hook);
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}
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