422 lines
16 KiB
C
422 lines
16 KiB
C
/**
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* Copyright (C) 2022 Matt Burt, all xrdp contributors
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*
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*/
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/**
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* @file common/scancode.c
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* @brief Scancode handling
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*/
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#if defined(HAVE_CONFIG_H)
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#include <config_ac.h>
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#endif
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#include <stddef.h>
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#include <string.h>
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#include "scancode.h"
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struct scancode_to_keycode
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{
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unsigned short scancode; // 0x1xx implies an extended key
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unsigned char keycode;
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};
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#define ELEMENTS(x) (sizeof(x) / sizeof(x[0]))
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// Sources:-
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// file:/usr/share/X11/xkb/keycodes/evdev
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// https://wiki.osdev.org/PS/2_Keyboard
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// https://www.kbdlayout.info/
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static const struct scancode_to_keycode
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evdev_scancode_to_keycode_map[] =
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{
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// Virtual XKB
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// Key (US) Symbol
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// -------- ------
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{ 0x001, 9 }, // VK_ESCAPE ESC
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{ 0x002, 10 }, // VK_1 AE01
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{ 0x003, 11 }, // VK_2 AE02
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{ 0x004, 12 }, // VK_3 AE03
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{ 0x005, 13 }, // VK_4 AE04
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{ 0x006, 14 }, // VK_5 AE05
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{ 0x007, 15 }, // VK_6 AE06
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{ 0x008, 16 }, // VK_7 AE07
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{ 0x009, 17 }, // VK_8 AE08
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{ 0x00a, 18 }, // VK_9 AE09
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{ 0x00b, 19 }, // VK_0 AE10
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{ 0x00c, 20 }, // VK_OEM_MINUS AE11
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{ 0x00d, 21 }, // VK_OEM_PLUS AE12
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{ 0x00e, 22 }, // VK_BACK BKSP
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{ 0x00f, 23 }, // VK_TAB TAB
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{ 0x010, 24 }, // VK_Q AD01
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{ 0x011, 25 }, // VK_W AD02
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{ 0x012, 26 }, // VK_E AD03
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{ 0x013, 27 }, // VK_R AD04
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{ 0x014, 28 }, // VK_T AD05
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{ 0x015, 29 }, // VK_Y AD06
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{ 0x016, 30 }, // VK_U AD07
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{ 0x017, 31 }, // VK_I AD08
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{ 0x018, 32 }, // VK_O AD09
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{ 0x019, 33 }, // VK_P AD10
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{ 0x01a, 34 }, // VK_OEM_4 AD11
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{ 0x01b, 35 }, // VK_OEM_6 AD12
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{ 0x01c, 36 }, // VK_RETURN RTRN
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{ 0x01d, 37 }, // VK_LCONTROL LCTL
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{ 0x01e, 38 }, // VK_A AC01
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{ 0x01f, 39 }, // VK_S AC02
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{ 0x020, 40 }, // VK_D AC03
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{ 0x021, 41 }, // VK_F AC04
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{ 0x022, 42 }, // VK_G AC05
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{ 0x023, 43 }, // VK_H AC06
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{ 0x024, 44 }, // VK_J AC07
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{ 0x025, 45 }, // VK_K AC08
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{ 0x026, 46 }, // VK_L AC09
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{ 0x027, 47 }, // VK_OEM_1 AC10
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{ 0x028, 48 }, // VK_OEM_7 AC11
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{ 0x029, 49 }, // VK_OEM_3 TLDE
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{ 0x02a, 50 }, // VK_LSHIFT LFSH
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{ 0x02b, 51 }, // VK_OEM_5 BKSL
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{ 0x02c, 52 }, // VK_Z AB01
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{ 0x02d, 53 }, // VK_X AB02
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{ 0x02e, 54 }, // VK_C AB03
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{ 0x02f, 55 }, // VK_V AB04
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{ 0x030, 56 }, // VK_B AB05
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{ 0x031, 57 }, // VK_N AB06
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{ 0x032, 58 }, // VK_M AB07
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{ 0x033, 59 }, // VK_OEM_COMMA AB08
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{ 0x034, 60 }, // VK_OEM_PERIOD AB09
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{ 0x035, 61 }, // VK_OEM_2 AB10
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{ 0x036, 62 }, // VK_RSHIFT RTSH
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{ 0x037, 63 }, // VK_MULTIPLY KPMU
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{ 0x038, 64 }, // VK_LMENU LALT
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{ 0x039, 65 }, // VK_SPACE SPCE
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{ 0x03a, 66 }, // VK_CAPITAL CAPS
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{ 0x03b, 67 }, // VK_F1 FK01
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{ 0x03c, 68 }, // VK_F2 FK02
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{ 0x03d, 69 }, // VK_F3 FK03
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{ 0x03e, 70 }, // VK_F4 FK04
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{ 0x03f, 71 }, // VK_F5 FK05
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{ 0x040, 72 }, // VK_F6 FK06
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{ 0x041, 73 }, // VK_F7 FK07
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{ 0x042, 74 }, // VK_F8 FK08
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{ 0x043, 75 }, // VK_F9 FK09
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{ 0x044, 76 }, // VK_F10 FK10
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{ 0x045, 77 }, // VK_NUMLOCK NMLK
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{ 0x046, 78 }, // VK_SCROLL SCLK
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{ 0x047, 79 }, // VK_HOME KP7
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{ 0x048, 80 }, // VK_UP KP8
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{ 0x049, 81 }, // VK_PRIOR KP9
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{ 0x04a, 82 }, // VK_SUBTRACT KPSU
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{ 0x04b, 83 }, // VK_LEFT KP4
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{ 0x04c, 84 }, // VK_CLEAR KP5
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{ 0x04d, 85 }, // VK_RIGHT KP6
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{ 0x04e, 86 }, // VK_ADD KPAD
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{ 0x04f, 87 }, // VK_END KP1
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{ 0x050, 88 }, // VK_DOWN KP2
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{ 0x051, 89 }, // VK_NEXT KP3
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{ 0x052, 90 }, // VK_INSERT KP0
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{ 0x053, 91 }, // VK_DELETE KPDL
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{ 0x056, 94 }, // VK_OEM_102 LSGT
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{ 0x057, 95 }, // VK_F11 FK11
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{ 0x058, 96 }, // VK_F12 FK12
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{ 0x070, 101 }, // - HKTG
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{ 0x073, 97 }, // VK_ABNT_C1 AB11
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{ 0x079, 100 }, // - HENK
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{ 0x07b, 102 }, // VK_OEM_PA1 MUHE
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{ 0x07d, 132 }, // - AE13
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{ 0x110, 173 }, // VK_MEDIA_PREV_TRACK I173 (KEY_PREVIOUSSONG)
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{ 0x119, 171 }, // VK_MEDIA_NEXT_TRACK I171 (KEY_NEXTSONG)
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{ 0x11c, 104 }, // VK_RETURN KPEN
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{ 0x11d, 105 }, // VK_RCONTROL RCTL
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{ 0x120, 121 }, // VK_VOLUME_MUTE MUTE
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{ 0x121, 148 }, // VK_LAUNCH_APP2 I148 (KEY_CALC)
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{ 0x122, 172 }, // VK_PLAY_PAUSE I172 (KEY_PLAYPAUSE)
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{ 0x124, 174 }, // VK_MEDIA_STOP I174 (KEY_STOPCD)
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{ 0x12e, 122 }, // VK_VOLUME_DOWN VOL-
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{ 0x130, 123 }, // VK_VOLUME_UP VOL+
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{ 0x132, 180 }, // VK_BROWSER_HOME I180 (KEY_HOMEPAGE)
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{ 0x135, 106 }, // VK_DIVIDE KPDV
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{ 0x137, 107 }, // VK_SNAPSHOT PRSC
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{ 0x138, 108 }, // VK_RMENU RALT
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{ 0x147, 110 }, // VK_HOME HOME
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{ 0x148, 111 }, // VK_UP UP
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{ 0x149, 112 }, // VK_PRIOR PGUP (KEY_COMPUTER)
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{ 0x14b, 113 }, // VK_LEFT LEFT
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{ 0x14d, 114 }, // VK_RIGHT RGHT
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{ 0x14f, 115 }, // VK_END END
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{ 0x150, 116 }, // VK_DOWN DOWN
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{ 0x151, 117 }, // VK_NEXT PGDN
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{ 0x152, 118 }, // VK_INSERT INS
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{ 0x153, 119 }, // VK_DELETE DELE
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{ 0x15b, 133 }, // VK_LWIN LWIN
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{ 0x15c, 134 }, // VK_RWIN RWIN
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{ 0x15d, 135 }, // VK_APPS COMP
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{ 0x165, 225 }, // VK_BROWSER_SEARCH I225 (KEY_SEARCH)
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{ 0x166, 164 }, // VK_BROWSER_FAVORITES I164 (KEY_BOOKMARKS)
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{ 0x16b, 165 }, // VK_LAUNCH_APP1 I165 (KEY_COMPUTER)
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{ 0x16c, 163 } // VK_LAUNCH_MAIL I163 (KEY_MAIL)
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};
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// Sources:-
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// file:/usr/share/X11/xkb/keycodes/xfree86
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// https://wiki.osdev.org/PS/2_Keyboard
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// https://www.kbdlayout.info/
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static const struct scancode_to_keycode
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base_scancode_to_keycode_map[] =
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{
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// Virtual XKB
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// Key (US) Symbol
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// -------- ------
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{ 0x001, 9 }, // VK_ESCAPE ESC
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{ 0x002, 10 }, // VK_1 AE01
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{ 0x003, 11 }, // VK_2 AE02
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{ 0x004, 12 }, // VK_3 AE03
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{ 0x005, 13 }, // VK_4 AE04
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{ 0x006, 14 }, // VK_5 AE05
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{ 0x007, 15 }, // VK_6 AE06
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{ 0x008, 16 }, // VK_7 AE07
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{ 0x009, 17 }, // VK_8 AE08
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{ 0x00a, 18 }, // VK_9 AE09
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{ 0x00b, 19 }, // VK_0 AE10
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{ 0x00c, 20 }, // VK_OEM_MINUS AE11
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{ 0x00d, 21 }, // VK_OEM_PLUS AE12
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{ 0x00e, 22 }, // VK_BACK BKSP
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{ 0x00f, 23 }, // VK_TAB TAB
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{ 0x010, 24 }, // VK_Q AD01
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{ 0x011, 25 }, // VK_W AD02
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{ 0x012, 26 }, // VK_E AD03
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{ 0x013, 27 }, // VK_R AD04
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{ 0x014, 28 }, // VK_T AD05
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{ 0x015, 29 }, // VK_Y AD06
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{ 0x016, 30 }, // VK_U AD07
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{ 0x017, 31 }, // VK_I AD08
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{ 0x018, 32 }, // VK_O AD09
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{ 0x019, 33 }, // VK_P AD10
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{ 0x01a, 34 }, // VK_OEM_4 AD11
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{ 0x01b, 35 }, // VK_OEM_6 AD12
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{ 0x01c, 36 }, // VK_RETURN RTRN
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{ 0x01d, 37 }, // VK_LCONTROL LCTL
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{ 0x01e, 38 }, // VK_A AC01
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{ 0x01f, 39 }, // VK_S AC02
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{ 0x020, 40 }, // VK_D AC03
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{ 0x021, 41 }, // VK_F AC04
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{ 0x022, 42 }, // VK_G AC05
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{ 0x023, 43 }, // VK_H AC06
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{ 0x024, 44 }, // VK_J AC07
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{ 0x025, 45 }, // VK_K AC08
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{ 0x026, 46 }, // VK_L AC09
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{ 0x027, 47 }, // VK_OEM_1 AC10
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{ 0x028, 48 }, // VK_OEM_7 AC11
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{ 0x029, 49 }, // VK_OEM_3 TLDE
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{ 0x02a, 50 }, // VK_LSHIFT LFSH
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{ 0x02b, 51 }, // VK_OEM_5 BKSL
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{ 0x02c, 52 }, // VK_Z AB01
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{ 0x02d, 53 }, // VK_X AB02
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{ 0x02e, 54 }, // VK_C AB03
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{ 0x02f, 55 }, // VK_V AB04
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{ 0x030, 56 }, // VK_B AB05
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{ 0x031, 57 }, // VK_N AB06
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{ 0x032, 58 }, // VK_M AB07
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{ 0x033, 59 }, // VK_OEM_COMMA AB08
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{ 0x034, 60 }, // VK_OEM_PERIOD AB09
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{ 0x035, 61 }, // VK_OEM_2 AB10
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{ 0x036, 62 }, // VK_RSHIFT RTSH
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{ 0x037, 63 }, // VK_MULTIPLY KPMU
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{ 0x038, 64 }, // VK_LMENU LALT
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{ 0x039, 65 }, // VK_SPACE SPCE
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{ 0x03a, 66 }, // VK_CAPITAL CAPS
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{ 0x03b, 67 }, // VK_F1 FK01
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{ 0x03c, 68 }, // VK_F2 FK02
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{ 0x03d, 69 }, // VK_F3 FK03
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{ 0x03e, 70 }, // VK_F4 FK04
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{ 0x03f, 71 }, // VK_F5 FK05
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{ 0x040, 72 }, // VK_F6 FK06
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{ 0x041, 73 }, // VK_F7 FK07
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{ 0x042, 74 }, // VK_F8 FK08
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{ 0x043, 75 }, // VK_F9 FK09
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{ 0x044, 76 }, // VK_F10 FK10
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{ 0x045, 77 }, // VK_NUMLOCK NMLK
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{ 0x046, 78 }, // VK_SCROLL SCLK
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{ 0x047, 79 }, // VK_HOME KP7
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{ 0x048, 80 }, // VK_UP KP8
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{ 0x049, 81 }, // VK_PRIOR KP9
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{ 0x04a, 82 }, // VK_SUBTRACT KPSU
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{ 0x04b, 83 }, // VK_LEFT KP4
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{ 0x04c, 84 }, // VK_CLEAR KP5
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{ 0x04d, 85 }, // VK_RIGHT KP6
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{ 0x04e, 86 }, // VK_ADD KPAD
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{ 0x04f, 87 }, // VK_END KP1
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{ 0x050, 88 }, // VK_DOWN KP2
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{ 0x051, 89 }, // VK_NEXT KP3
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{ 0x052, 90 }, // VK_INSERT KP0
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{ 0x053, 91 }, // VK_DELETE KPDL
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{ 0x056, 94 }, // VK_OEM_102 LSGT
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{ 0x057, 95 }, // VK_F11 FK11
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{ 0x058, 96 }, // VK_F12 FK12
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{ 0x070, 208 }, // - HKTG
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{ 0x073, 211 }, // VK_ABNT_C1 AB11
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{ 0x079, 129 }, // - XFER
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{ 0x07b, 131 }, // VK_OEM_PA1 NFER
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{ 0x07d, 133 }, // - AE13
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{ 0x11c, 108 }, // VK_RETURN KPEN
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{ 0x11d, 109 }, // VK_RCONTROL RCTL
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{ 0x120, 141 }, // VK_VOLUME_MUTE MUTE
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{ 0x12e, 142 }, // VK_VOLUME_DOWN VOL-
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{ 0x130, 143 }, // VK_VOLUME_UP VOL+
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{ 0x135, 112 }, // VK_DIVIDE KPDV
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{ 0x137, 121 }, // VK_SNAPSHOT PRSC
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{ 0x138, 113 }, // VK_RMENU RALT
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{ 0x147, 97 }, // VK_HOME HOME
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{ 0x148, 98 }, // VK_UP UP
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{ 0x149, 99 }, // VK_PRIOR PGUP (KEY_COMPUTER)
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{ 0x14b, 100 }, // VK_LEFT LEFT
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{ 0x14d, 102 }, // VK_RIGHT RGHT
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{ 0x14f, 103 }, // VK_END END
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{ 0x150, 104 }, // VK_DOWN DOWN
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{ 0x151, 105 }, // VK_NEXT PGDN
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{ 0x152, 106 }, // VK_INSERT INS
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{ 0x153, 107 }, // VK_DELETE DELE
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{ 0x15b, 115 }, // VK_LWIN LWIN
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{ 0x15c, 116 }, // VK_RWIN RWIN
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{ 0x15d, 117 } // VK_APPS COMP
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};
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struct map_settings
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{
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const struct scancode_to_keycode *map;
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const char *name;
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unsigned int size;
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};
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enum settings_index
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{
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SI_EVDEV = 0,
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SI_BASE
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};
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const struct map_settings global_settings[] =
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{
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{
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// SI_EVDEV
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.map = evdev_scancode_to_keycode_map,
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.name = "evdev",
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.size = ELEMENTS(evdev_scancode_to_keycode_map),
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},
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{
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// SI_BASE
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.map = base_scancode_to_keycode_map,
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.name = "base",
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.size = ELEMENTS(base_scancode_to_keycode_map)
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}
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};
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// Default mapping set is "evdev"
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const struct map_settings *settings = &global_settings[SI_EVDEV];
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/*****************************************************************************/
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unsigned short
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scancode_to_keycode(unsigned short scancode)
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{
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unsigned int min = 0;
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unsigned int max = settings->size;
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unsigned short rv = 0;
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// Check scancode is in range of map
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if (scancode >= settings->map[min].scancode &&
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scancode <= settings->map[max - 1].scancode)
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{
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// Use a binary chop to locate the correct index
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// in logarithmic time.
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while (1)
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{
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unsigned int index = (min + max) / 2;
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if (scancode == settings->map[index].scancode)
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{
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rv = settings->map[index].keycode;
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break;
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}
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// Adjust min or max, checking for end
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// of iteration
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if (scancode < settings->map[index].scancode)
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{
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max = index;
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}
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else if (min == index)
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{
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// We've already checked this value
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break;
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}
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else
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{
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min = index;
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}
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}
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}
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return rv;
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}
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/*****************************************************************************/
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unsigned short
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scancode_get_next(unsigned int *iter)
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{
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unsigned short rv = 0;
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if (*iter < settings->size)
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{
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rv = settings->map[*iter].scancode;
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++(*iter);
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}
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return rv;
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}
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/*****************************************************************************/
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int
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scancode_set_keycode_set(const char *kk_set)
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{
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int rv = 0;
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if (kk_set == NULL)
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{
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rv = 1;
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}
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else if (strncmp(kk_set, "evdev", 5) == 0)
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{
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settings = &global_settings[SI_EVDEV];
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}
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else if (strncmp(kk_set, "base", 4) == 0)
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{
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settings = &global_settings[SI_BASE];
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}
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else if (strncmp(kk_set, "xfree86", 7) == 0)
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{
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settings = &global_settings[SI_BASE];
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}
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else
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{
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rv = 1;
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}
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return rv;
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}
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/*****************************************************************************/
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const char *
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scancode_get_keycode_set(void)
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{
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return settings->name;
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}
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