From 5a079a2d114f96d4847d1ee305d5b7c16eeec50e Mon Sep 17 00:00:00 2001 From: 3gg <3gg@shellblade.net> Date: Sat, 27 Dec 2025 12:03:39 -0800 Subject: Initial commit --- .../core/freebsd/SDL_evdev_kbd_default_keyaccmap.h | 167 ++++++ .../src/core/freebsd/SDL_evdev_kbd_freebsd.c | 613 +++++++++++++++++++++ 2 files changed, 780 insertions(+) create mode 100644 contrib/SDL-3.2.8/src/core/freebsd/SDL_evdev_kbd_default_keyaccmap.h create mode 100644 contrib/SDL-3.2.8/src/core/freebsd/SDL_evdev_kbd_freebsd.c (limited to 'contrib/SDL-3.2.8/src/core/freebsd') diff --git a/contrib/SDL-3.2.8/src/core/freebsd/SDL_evdev_kbd_default_keyaccmap.h b/contrib/SDL-3.2.8/src/core/freebsd/SDL_evdev_kbd_default_keyaccmap.h new file mode 100644 index 0000000..fc6e5e8 --- /dev/null +++ b/contrib/SDL-3.2.8/src/core/freebsd/SDL_evdev_kbd_default_keyaccmap.h @@ -0,0 +1,167 @@ +#include + +/* *INDENT-OFF* */ // clang-format off +/* + * Automatically generated from /usr/share/vt/keymaps/us.acc.kbd. + * DO NOT EDIT! + */ +static keymap_t keymap_default_us_acc = { 0x6d, { +/* alt + * scan cntrl alt alt cntrl + * code base shift cntrl shift alt shift cntrl shift spcl flgs + * --------------------------------------------------------------------------- + */ +/*00*/{{ NOP, NOP, NOP, NOP, NOP, NOP, NOP, NOP, }, 0xFF,0x00 }, +/*01*/{{ 0x1B, 0x1B, 0x1B, 0x1B, 0x1B, 0x1B, DBG, DBG, }, 0x03,0x00 }, +/*02*/{{ '1', '!', NOP, NOP, '1', '!', NOP, NOP, }, 0x33,0x00 }, +/*03*/{{ '2', '@', 0x00, 0x00, '2', '@', 0x00, 0x00, }, 0x00,0x00 }, +/*04*/{{ '3', '#', NOP, NOP, '3', '#', NOP, NOP, }, 0x33,0x00 }, +/*05*/{{ '4', '$', NOP, NOP, '4', '$', NOP, NOP, }, 0x33,0x00 }, +/*06*/{{ '5', '%', NOP, NOP, '5', '%', NOP, NOP, }, 0x33,0x00 }, +/*07*/{{ '6', '^', 0x1E, 0x1E, '6', DCIR, 0x1E, 0x1E, }, 0x04,0x00 }, +/*08*/{{ '7', '&', NOP, NOP, '7', '&', NOP, NOP, }, 0x33,0x00 }, +/*09*/{{ '8', '*', NOP, NOP, '8', DRIN, NOP, NOP, }, 0x37,0x00 }, +/*0a*/{{ '9', '(', NOP, NOP, '9', '(', NOP, NOP, }, 0x33,0x00 }, +/*0b*/{{ '0', ')', NOP, NOP, '0', ')', NOP, NOP, }, 0x33,0x00 }, +/*0c*/{{ '-', '_', 0x1F, 0x1F, '-', '_', 0x1F, 0x1F, }, 0x00,0x00 }, +/*0d*/{{ '=', '+', NOP, NOP, '=', '+', NOP, NOP, }, 0x33,0x00 }, +/*0e*/{{ 0x08, 0x08, 0x7F, 0x7F, 0x08, 0x08, 0x7F, 0x7F, }, 0x00,0x00 }, +/*0f*/{{ 0x09, BTAB, NEXT, NEXT, 0x09, BTAB, NOP, NOP, }, 0x77,0x00 }, +/*10*/{{ 'q', 'Q', 0x11, 0x11, 'q', 'Q', 0x11, 0x11, }, 0x00,0x01 }, +/*11*/{{ 'w', 'W', 0x17, 0x17, 'w', 'W', 0x17, 0x17, }, 0x00,0x01 }, +/*12*/{{ 'e', 'E', 0x05, 0x05, 'e', 'E', 0x05, 0x05, }, 0x00,0x01 }, +/*13*/{{ 'r', 'R', 0x12, 0x12, 'r', 'R', 0x12, 0x12, }, 0x00,0x01 }, +/*14*/{{ 't', 'T', 0x14, 0x14, 't', 'T', 0x14, 0x14, }, 0x00,0x01 }, +/*15*/{{ 'y', 'Y', 0x19, 0x19, 'y', 'Y', 0x19, 0x19, }, 0x00,0x01 }, +/*16*/{{ 'u', 'U', 0x15, 0x15, 'u', 'U', 0x15, 0x15, }, 0x00,0x01 }, +/*17*/{{ 'i', 'I', 0x09, 0x09, 'i', 'I', 0x09, 0x09, }, 0x00,0x01 }, +/*18*/{{ 'o', 'O', 0x0F, 0x0F, 'o', 'O', 0x0F, 0x0F, }, 0x00,0x01 }, +/*19*/{{ 'p', 'P', 0x10, 0x10, 'p', 'P', 0x10, 0x10, }, 0x00,0x01 }, +/*1a*/{{ '[', '{', 0x1B, 0x1B, '[', '{', 0x1B, 0x1B, }, 0x00,0x00 }, +/*1b*/{{ ']', '}', 0x1D, 0x1D, ']', '}', 0x1D, 0x1D, }, 0x00,0x00 }, +/*1c*/{{ 0x0D, 0x0D, 0x0A, 0x0A, 0x0D, 0x0D, 0x0A, 0x0A, }, 0x00,0x00 }, +/*1d*/{{ LCTR, LCTR, LCTR, LCTR, LCTR, LCTR, LCTR, LCTR, }, 0xFF,0x00 }, +/*1e*/{{ 'a', 'A', 0x01, 0x01, 'a', 'A', 0x01, 0x01, }, 0x00,0x01 }, +/*1f*/{{ 's', 'S', 0x13, 0x13, 's', 'S', 0x13, 0x13, }, 0x00,0x01 }, +/*20*/{{ 'd', 'D', 0x04, 0x04, 'd', 'D', 0x04, 0x04, }, 0x00,0x01 }, +/*21*/{{ 'f', 'F', 0x06, 0x06, 'f', 'F', 0x06, 0x06, }, 0x00,0x01 }, +/*22*/{{ 'g', 'G', 0x07, 0x07, 'g', 'G', 0x07, 0x07, }, 0x00,0x01 }, +/*23*/{{ 'h', 'H', 0x08, 0x08, 'h', 'H', 0x08, 0x08, }, 0x00,0x01 }, +/*24*/{{ 'j', 'J', 0x0A, 0x0A, 'j', 'J', 0x0A, 0x0A, }, 0x00,0x01 }, +/*25*/{{ 'k', 'K', 0x0B, 0x0B, 'k', 'K', 0x0B, 0x0B, }, 0x00,0x01 }, +/*26*/{{ 'l', 'L', 0x0C, 0x0C, 'l', 'L', 0x0C, 0x0C, }, 0x00,0x01 }, +/*27*/{{ ';', ':', NOP, NOP, ';', ':', NOP, NOP, }, 0x33,0x00 }, +/*28*/{{ '\'', '"', NOP, NOP, DACU, DUML, NOP, NOP, }, 0x3F,0x00 }, +/*29*/{{ '`', '~', NOP, NOP, DGRA, DTIL, NOP, NOP, }, 0x3F,0x00 }, +/*2a*/{{ LSH, LSH, LSH, LSH, LSH, LSH, LSH, LSH, }, 0xFF,0x00 }, +/*2b*/{{ '\\', '|', 0x1C, 0x1C, '\\', '|', 0x1C, 0x1C, }, 0x00,0x00 }, +/*2c*/{{ 'z', 'Z', 0x1A, 0x1A, 'z', 'Z', 0x1A, 0x1A, }, 0x00,0x01 }, +/*2d*/{{ 'x', 'X', 0x18, 0x18, 'x', 'X', 0x18, 0x18, }, 0x00,0x01 }, +/*2e*/{{ 'c', 'C', 0x03, 0x03, 'c', 'C', 0x03, 0x03, }, 0x00,0x01 }, +/*2f*/{{ 'v', 'V', 0x16, 0x16, 'v', 'V', 0x16, 0x16, }, 0x00,0x01 }, +/*30*/{{ 'b', 'B', 0x02, 0x02, 'b', 'B', 0x02, 0x02, }, 0x00,0x01 }, +/*31*/{{ 'n', 'N', 0x0E, 0x0E, 'n', 'N', 0x0E, 0x0E, }, 0x00,0x01 }, +/*32*/{{ 'm', 'M', 0x0D, 0x0D, 'm', 'M', 0x0D, 0x0D, }, 0x00,0x01 }, +/*33*/{{ ',', '<', NOP, NOP, DCED, '<', NOP, NOP, }, 0x3B,0x00 }, +/*34*/{{ '.', '>', NOP, NOP, '.', '>', NOP, NOP, }, 0x33,0x00 }, +/*35*/{{ '/', '?', NOP, NOP, '/', '?', NOP, NOP, }, 0x33,0x00 }, +/*36*/{{ RSH, RSH, RSH, RSH, RSH, RSH, RSH, RSH, }, 0xFF,0x00 }, +/*37*/{{ '*', '*', '*', '*', '*', '*', '*', '*', }, 0x00,0x00 }, +/*38*/{{ LALT, LALT, LALT, LALT, LALT, LALT, LALT, LALT, }, 0xFF,0x00 }, +/*39*/{{ ' ', ' ', 0x00, 0x00, ' ', ' ', SUSP, SUSP, }, 0x03,0x00 }, +/*3a*/{{ CLK, CLK, CLK, CLK, CLK, CLK, CLK, CLK, }, 0xFF,0x00 }, +/*3b*/{{ F( 1), F(13), F(25), F(37), S( 1), S(11), S( 1), S(11),}, 0xFF,0x00 }, +/*3c*/{{ F( 2), F(14), F(26), F(38), S( 2), S(12), S( 2), S(12),}, 0xFF,0x00 }, +/*3d*/{{ F( 3), F(15), F(27), F(39), S( 3), S(13), S( 3), S(13),}, 0xFF,0x00 }, +/*3e*/{{ F( 4), F(16), F(28), F(40), S( 4), S(14), S( 4), S(14),}, 0xFF,0x00 }, +/*3f*/{{ F( 5), F(17), F(29), F(41), S( 5), S(15), S( 5), S(15),}, 0xFF,0x00 }, +/*40*/{{ F( 6), F(18), F(30), F(42), S( 6), S(16), S( 6), S(16),}, 0xFF,0x00 }, +/*41*/{{ F( 7), F(19), F(31), F(43), S( 7), S( 7), S( 7), S( 7),}, 0xFF,0x00 }, +/*42*/{{ F( 8), F(20), F(32), F(44), S( 8), S( 8), S( 8), S( 8),}, 0xFF,0x00 }, +/*43*/{{ F( 9), F(21), F(33), F(45), S( 9), S( 9), S( 9), S( 9),}, 0xFF,0x00 }, +/*44*/{{ F(10), F(22), F(34), F(46), S(10), S(10), S(10), S(10),}, 0xFF,0x00 }, +/*45*/{{ NLK, NLK, NLK, NLK, NLK, NLK, NLK, NLK, }, 0xFF,0x00 }, +/*46*/{{ SLK, SLK, SLK, SLK, SLK, SLK, SLK, SLK, }, 0xFF,0x00 }, +/*47*/{{ F(49), '7', '7', '7', '7', '7', '7', '7', }, 0x80,0x02 }, +/*48*/{{ F(50), '8', '8', '8', '8', '8', '8', '8', }, 0x80,0x02 }, +/*49*/{{ F(51), '9', '9', '9', '9', '9', '9', '9', }, 0x80,0x02 }, +/*4a*/{{ F(52), '-', '-', '-', '-', '-', '-', '-', }, 0x80,0x02 }, +/*4b*/{{ F(53), '4', '4', '4', '4', '4', '4', '4', }, 0x80,0x02 }, +/*4c*/{{ F(54), '5', '5', '5', '5', '5', '5', '5', }, 0x80,0x02 }, +/*4d*/{{ F(55), '6', '6', '6', '6', '6', '6', '6', }, 0x80,0x02 }, +/*4e*/{{ F(56), '+', '+', '+', '+', '+', '+', '+', }, 0x80,0x02 }, +/*4f*/{{ F(57), '1', '1', '1', '1', '1', '1', '1', }, 0x80,0x02 }, +/*50*/{{ F(58), '2', '2', '2', '2', '2', '2', '2', }, 0x80,0x02 }, +/*51*/{{ F(59), '3', '3', '3', '3', '3', '3', '3', }, 0x80,0x02 }, +/*52*/{{ F(60), '0', '0', '0', '0', '0', '0', '0', }, 0x80,0x02 }, +/*53*/{{ 0x7F, '.', '.', '.', '.', '.', RBT, RBT, }, 0x03,0x02 }, +/*54*/{{ NOP, NOP, NOP, NOP, NOP, NOP, NOP, NOP, }, 0xFF,0x00 }, +/*55*/{{ NOP, NOP, NOP, NOP, NOP, NOP, NOP, NOP, }, 0xFF,0x00 }, +/*56*/{{ NOP, NOP, NOP, NOP, NOP, NOP, NOP, NOP, }, 0xFF,0x00 }, +/*57*/{{ F(11), F(23), F(35), F(47), S(11), S(11), S(11), S(11),}, 0xFF,0x00 }, +/*58*/{{ F(12), F(24), F(36), F(48), S(12), S(12), S(12), S(12),}, 0xFF,0x00 }, +/*59*/{{ 0x0D, 0x0D, 0x0A, 0x0A, 0x0D, 0x0D, 0x0A, 0x0A, }, 0x00,0x00 }, +/*5a*/{{ RCTR, RCTR, RCTR, RCTR, RCTR, RCTR, RCTR, RCTR, }, 0xFF,0x00 }, +/*5b*/{{ '/', '/', '/', '/', '/', '/', '/', '/', }, 0x00,0x02 }, +/*5c*/{{ NEXT, NEXT, NOP, NOP, DBG, DBG, DBG, DBG, }, 0xFF,0x00 }, +/*5d*/{{ RALT, RALT, RALT, RALT, RALT, RALT, RALT, RALT, }, 0xFF,0x00 }, +/*5e*/{{ F(49), F(49), F(49), F(49), F(49), F(49), F(49), F(49),}, 0xFF,0x00 }, +/*5f*/{{ F(50), F(50), F(50), F(50), F(50), F(50), F(50), F(50),}, 0xFF,0x00 }, +/*60*/{{ F(51), F(51), F(51), F(51), F(51), F(51), F(51), F(51),}, 0xFF,0x00 }, +/*61*/{{ F(53), F(53), F(53), F(53), F(53), F(53), F(53), F(53),}, 0xFF,0x00 }, +/*62*/{{ F(55), F(55), F(55), F(55), F(55), F(55), F(55), F(55),}, 0xFF,0x00 }, +/*63*/{{ F(57), F(57), F(57), F(57), F(57), F(57), F(57), F(57),}, 0xFF,0x00 }, +/*64*/{{ F(58), F(58), F(58), F(58), F(58), F(58), F(58), F(58),}, 0xFF,0x00 }, +/*65*/{{ F(59), F(59), F(59), F(59), F(59), F(59), F(59), F(59),}, 0xFF,0x00 }, +/*66*/{{ F(60), F(60), F(60), F(60), F(60), F(60), F(60), F(60),}, 0xFF,0x00 }, +/*67*/{{ F(61), F(61), F(61), F(61), F(61), F(61), RBT, F(61),}, 0xFF,0x00 }, +/*68*/{{ SPSC, SPSC, SUSP, SUSP, NOP, NOP, SUSP, SUSP, }, 0xFF,0x00 }, +/*69*/{{ F(62), F(62), F(62), F(62), F(62), F(62), F(62), F(62),}, 0xFF,0x00 }, +/*6a*/{{ F(63), F(63), F(63), F(63), F(63), F(63), F(63), F(63),}, 0xFF,0x00 }, +/*6b*/{{ F(64), F(64), F(64), F(64), F(64), F(64), F(64), F(64),}, 0xFF,0x00 }, +/*6c*/{{ NOP, NOP, NOP, NOP, NOP, NOP, NOP, NOP, }, 0xFF,0x00 }, +} }; + +static accentmap_t accentmap_default_us_acc = { 11, { + // dgra=0 + { '`', { { 'a',0xe0 }, { 'A',0xc0 }, { 'e',0xe8 }, { 'E',0xc8 }, + { 'i',0xec }, { 'I',0xcc }, { 'o',0xf2 }, { 'O',0xd2 }, + { 'u',0xf9 }, { 'U',0xd9 }, }, }, + // dacu=1 + { 0xb4, { { 'a',0xe1 }, { 'A',0xc1 }, { 'e',0xe9 }, { 'E',0xc9 }, + { 'i',0xed }, { 'I',0xcd }, { 'o',0xf3 }, { 'O',0xd3 }, + { 'u',0xfa }, { 'U',0xda }, { 'y',0xfd }, { 'Y',0xdd }, }, }, + // dcir=2 + { '^', { { 'a',0xe2 }, { 'A',0xc2 }, { 'e',0xea }, { 'E',0xca }, + { 'i',0xee }, { 'I',0xce }, { 'o',0xf4 }, { 'O',0xd4 }, + { 'u',0xfb }, { 'U',0xdb }, }, }, + // dtil=3 + { '~', { { 'a',0xe3 }, { 'A',0xc3 }, { 'n',0xf1 }, { 'N',0xd1 }, + { 'o',0xf5 }, { 'O',0xd5 }, }, }, + // dmac=4 + { 0x00 }, + // dbre=5 + { 0x00 }, + // ddot=6 + { 0x00 }, + // duml=7 + { 0xa8, { { 'a',0xe4 }, { 'A',0xc4 }, { 'e',0xeb }, { 'E',0xcb }, + { 'i',0xef }, { 'I',0xcf }, { 'o',0xf6 }, { 'O',0xd6 }, + { 'u',0xfc }, { 'U',0xdc }, { 'y',0xff }, }, }, + // dsla=8 + { 0x00 }, + // drin=9 + { 0xb0, { { 'a',0xe5 }, { 'A',0xc5 }, }, }, + // dced=10 + { 0xb8, { { 'c',0xe7 }, { 'C',0xc7 }, }, }, + // dapo=11 + { 0x00 }, + // ddac=12 + { 0x00 }, + // dogo=13 + { 0x00 }, + // dcar=14 + { 0x00 }, +} }; + +/* *INDENT-ON* */ // clang-format on diff --git a/contrib/SDL-3.2.8/src/core/freebsd/SDL_evdev_kbd_freebsd.c b/contrib/SDL-3.2.8/src/core/freebsd/SDL_evdev_kbd_freebsd.c new file mode 100644 index 0000000..16a2171 --- /dev/null +++ b/contrib/SDL-3.2.8/src/core/freebsd/SDL_evdev_kbd_freebsd.c @@ -0,0 +1,613 @@ +/* + Simple DirectMedia Layer + Copyright (C) 1997-2025 Sam Lantinga + + This software is provided 'as-is', without any express or implied + warranty. In no event will the authors be held liable for any damages + arising from the use of this software. + + Permission is granted to anyone to use this software for any purpose, + including commercial applications, and to alter it and redistribute it + freely, subject to the following restrictions: + + 1. The origin of this software must not be misrepresented; you must not + claim that you wrote the original software. If you use this software + in a product, an acknowledgment in the product documentation would be + appreciated but is not required. + 2. Altered source versions must be plainly marked as such, and must not be + misrepresented as being the original software. + 3. This notice may not be removed or altered from any source distribution. +*/ + +#include "SDL_internal.h" + +#include "../linux/SDL_evdev_kbd.h" + +#ifdef SDL_INPUT_FBSDKBIO + +// This logic is adapted from drivers/tty/vt/keyboard.c in the Linux kernel source, slightly modified to work with FreeBSD + +#include +#include +#include +#include +#include + +#include + +#include "../../events/SDL_events_c.h" +#include "SDL_evdev_kbd_default_keyaccmap.h" + +typedef void(fn_handler_fn)(SDL_EVDEV_keyboard_state *kbd); + +/* + * Keyboard State + */ + +struct SDL_EVDEV_keyboard_state +{ + int console_fd; + int keyboard_fd; + unsigned long old_kbd_mode; + unsigned short **key_maps; + keymap_t *key_map; + keyboard_info_t *kbInfo; + unsigned char shift_down[4]; // shift state counters.. + bool dead_key_next; + int npadch; // -1 or number assembled on pad + accentmap_t *accents; + unsigned int diacr; + bool rep; // flag telling character repeat + unsigned char lockstate; + unsigned char ledflagstate; + char shift_state; + char text[128]; + unsigned int text_len; +}; + +static bool SDL_EVDEV_kbd_load_keymaps(SDL_EVDEV_keyboard_state *kbd) +{ + return ioctl(kbd->keyboard_fd, GIO_KEYMAP, kbd->key_map) >= 0; +} + +static SDL_EVDEV_keyboard_state *kbd_cleanup_state = NULL; +static int kbd_cleanup_sigactions_installed = 0; +static int kbd_cleanup_atexit_installed = 0; + +static struct sigaction old_sigaction[NSIG]; + +static int fatal_signals[] = { + // Handlers for SIGTERM and SIGINT are installed in SDL_InitQuit. + SIGHUP, SIGQUIT, SIGILL, SIGABRT, + SIGFPE, SIGSEGV, SIGPIPE, SIGBUS, + SIGSYS +}; + +static void kbd_cleanup(void) +{ + struct mouse_info mData; + SDL_EVDEV_keyboard_state *kbd = kbd_cleanup_state; + if (!kbd) { + return; + } + kbd_cleanup_state = NULL; + SDL_zero(mData); + mData.operation = MOUSE_SHOW; + ioctl(kbd->keyboard_fd, KDSKBMODE, kbd->old_kbd_mode); + if (kbd->keyboard_fd != kbd->console_fd) { + close(kbd->keyboard_fd); + } + ioctl(kbd->console_fd, CONS_SETKBD, (unsigned long)(kbd->kbInfo->kb_index)); + ioctl(kbd->console_fd, CONS_MOUSECTL, &mData); +} + +void SDL_EVDEV_kbd_reraise_signal(int sig) +{ + raise(sig); +} + +siginfo_t *SDL_EVDEV_kdb_cleanup_siginfo = NULL; +void *SDL_EVDEV_kdb_cleanup_ucontext = NULL; + +static void kbd_cleanup_signal_action(int signum, siginfo_t *info, void *ucontext) +{ + struct sigaction *old_action_p = &(old_sigaction[signum]); + sigset_t sigset; + + // Restore original signal handler before going any further. + sigaction(signum, old_action_p, NULL); + + // Unmask current signal. + sigemptyset(&sigset); + sigaddset(&sigset, signum); + sigprocmask(SIG_UNBLOCK, &sigset, NULL); + + // Save original signal info and context for archeologists. + SDL_EVDEV_kdb_cleanup_siginfo = info; + SDL_EVDEV_kdb_cleanup_ucontext = ucontext; + + // Restore keyboard. + kbd_cleanup(); + + // Reraise signal. + SDL_EVDEV_kbd_reraise_signal(signum); +} + +static void kbd_unregister_emerg_cleanup(void) +{ + int tabidx; + + kbd_cleanup_state = NULL; + + if (!kbd_cleanup_sigactions_installed) { + return; + } + kbd_cleanup_sigactions_installed = 0; + + for (tabidx = 0; tabidx < sizeof(fatal_signals) / sizeof(fatal_signals[0]); ++tabidx) { + struct sigaction *old_action_p; + struct sigaction cur_action; + int signum = fatal_signals[tabidx]; + old_action_p = &(old_sigaction[signum]); + + // Examine current signal action + if (sigaction(signum, NULL, &cur_action)) { + continue; + } + + // Check if action installed and not modified + if (!(cur_action.sa_flags & SA_SIGINFO) || cur_action.sa_sigaction != &kbd_cleanup_signal_action) { + continue; + } + + // Restore original action + sigaction(signum, old_action_p, NULL); + } +} + +static void kbd_cleanup_atexit(void) +{ + // Restore keyboard. + kbd_cleanup(); + + // Try to restore signal handlers in case shared library is being unloaded + kbd_unregister_emerg_cleanup(); +} + +static void kbd_register_emerg_cleanup(SDL_EVDEV_keyboard_state *kbd) +{ + int tabidx; + + if (kbd_cleanup_state) { + return; + } + kbd_cleanup_state = kbd; + + if (!kbd_cleanup_atexit_installed) { + /* Since glibc 2.2.3, atexit() (and on_exit(3)) can be used within a shared library to establish + * functions that are called when the shared library is unloaded. + * -- man atexit(3) + */ + atexit(kbd_cleanup_atexit); + kbd_cleanup_atexit_installed = 1; + } + + if (kbd_cleanup_sigactions_installed) { + return; + } + kbd_cleanup_sigactions_installed = 1; + + for (tabidx = 0; tabidx < sizeof(fatal_signals) / sizeof(fatal_signals[0]); ++tabidx) { + struct sigaction *old_action_p; + struct sigaction new_action; + int signum = fatal_signals[tabidx]; + old_action_p = &(old_sigaction[signum]); + if (sigaction(signum, NULL, old_action_p)) { + continue; + } + + /* Skip SIGHUP and SIGPIPE if handler is already installed + * - assume the handler will do the cleanup + */ + if ((signum == SIGHUP || signum == SIGPIPE) && (old_action_p->sa_handler != SIG_DFL || (void (*)(int))old_action_p->sa_sigaction != SIG_DFL)) { + continue; + } + + new_action = *old_action_p; + new_action.sa_flags |= SA_SIGINFO; + new_action.sa_sigaction = &kbd_cleanup_signal_action; + sigaction(signum, &new_action, NULL); + } +} + +SDL_EVDEV_keyboard_state *SDL_EVDEV_kbd_init(void) +{ + SDL_EVDEV_keyboard_state *kbd; + struct mouse_info mData; + char flag_state; + char *devicePath; + + SDL_zero(mData); + mData.operation = MOUSE_HIDE; + kbd = (SDL_EVDEV_keyboard_state *)SDL_calloc(1, sizeof(SDL_EVDEV_keyboard_state)); + if (!kbd) { + return NULL; + } + + kbd->npadch = -1; + + // This might fail if we're not connected to a tty (e.g. on the Steam Link) + kbd->keyboard_fd = kbd->console_fd = open("/dev/tty", O_RDONLY | O_CLOEXEC); + + kbd->shift_state = 0; + + kbd->accents = SDL_calloc(1, sizeof(accentmap_t)); + kbd->key_map = SDL_calloc(1, sizeof(keymap_t)); + kbd->kbInfo = SDL_calloc(1, sizeof(keyboard_info_t)); + + ioctl(kbd->console_fd, KDGKBINFO, kbd->kbInfo); + ioctl(kbd->console_fd, CONS_MOUSECTL, &mData); + + if (ioctl(kbd->console_fd, KDGKBSTATE, &flag_state) == 0) { + kbd->ledflagstate = flag_state; + } + + if (ioctl(kbd->console_fd, GIO_DEADKEYMAP, kbd->accents) < 0) { + SDL_free(kbd->accents); + kbd->accents = &accentmap_default_us_acc; + } + + if (ioctl(kbd->console_fd, KDGKBMODE, &kbd->old_kbd_mode) == 0) { + // Set the keyboard in XLATE mode and load the keymaps + ioctl(kbd->console_fd, KDSKBMODE, (unsigned long)(K_XLATE)); + if (!SDL_EVDEV_kbd_load_keymaps(kbd)) { + SDL_free(kbd->key_map); + kbd->key_map = &keymap_default_us_acc; + } + + if (SDL_GetHintBoolean(SDL_HINT_MUTE_CONSOLE_KEYBOARD, true)) { + /* Take keyboard from console and open the actual keyboard device. + * Ensures that the keystrokes do not leak through to the console. + */ + ioctl(kbd->console_fd, CONS_RELKBD, 1ul); + SDL_asprintf(&devicePath, "/dev/kbd%d", kbd->kbInfo->kb_index); + kbd->keyboard_fd = open(devicePath, O_WRONLY | O_CLOEXEC); + if (kbd->keyboard_fd == -1) { + // Give keyboard back. + ioctl(kbd->console_fd, CONS_SETKBD, (unsigned long)(kbd->kbInfo->kb_index)); + kbd->keyboard_fd = kbd->console_fd; + } + + /* Make sure to restore keyboard if application fails to call + * SDL_Quit before exit or fatal signal is raised. + */ + if (!SDL_GetHintBoolean(SDL_HINT_NO_SIGNAL_HANDLERS, false)) { + kbd_register_emerg_cleanup(kbd); + } + SDL_free(devicePath); + } else + kbd->keyboard_fd = kbd->console_fd; + } + + return kbd; +} + +void SDL_EVDEV_kbd_quit(SDL_EVDEV_keyboard_state *kbd) +{ + struct mouse_info mData; + + if (!kbd) { + return; + } + SDL_zero(mData); + mData.operation = MOUSE_SHOW; + ioctl(kbd->console_fd, CONS_MOUSECTL, &mData); + + kbd_unregister_emerg_cleanup(); + + if (kbd->keyboard_fd >= 0) { + // Restore the original keyboard mode + ioctl(kbd->keyboard_fd, KDSKBMODE, kbd->old_kbd_mode); + + close(kbd->keyboard_fd); + if (kbd->console_fd != kbd->keyboard_fd && kbd->console_fd >= 0) { + // Give back keyboard. + ioctl(kbd->console_fd, CONS_SETKBD, (unsigned long)(kbd->kbInfo->kb_index)); + } + kbd->console_fd = kbd->keyboard_fd = -1; + } + + SDL_free(kbd); +} + +void SDL_EVDEV_kbd_set_muted(SDL_EVDEV_keyboard_state *state, bool muted) +{ +} + +void SDL_EVDEV_kbd_set_vt_switch_callbacks(SDL_EVDEV_keyboard_state *state, void (*release_callback)(void*), void *release_callback_data, void (*acquire_callback)(void*), void *acquire_callback_data) +{ +} + +void SDL_EVDEV_kbd_update(SDL_EVDEV_keyboard_state *state) +{ +} + +/* + * Helper Functions. + */ +static void put_queue(SDL_EVDEV_keyboard_state *kbd, uint c) +{ + // c is already part of a UTF-8 sequence and safe to add as a character + if (kbd->text_len < (sizeof(kbd->text) - 1)) { + kbd->text[kbd->text_len++] = (char)c; + } +} + +static void put_utf8(SDL_EVDEV_keyboard_state *kbd, uint c) +{ + if (c < 0x80) + /* 0******* */ + put_queue(kbd, c); + else if (c < 0x800) { + /* 110***** 10****** */ + put_queue(kbd, 0xc0 | (c >> 6)); + put_queue(kbd, 0x80 | (c & 0x3f)); + } else if (c < 0x10000) { + if (c >= 0xD800 && c < 0xE000) { + return; + } + if (c == 0xFFFF) { + return; + } + /* 1110**** 10****** 10****** */ + put_queue(kbd, 0xe0 | (c >> 12)); + put_queue(kbd, 0x80 | ((c >> 6) & 0x3f)); + put_queue(kbd, 0x80 | (c & 0x3f)); + } else if (c < 0x110000) { + /* 11110*** 10****** 10****** 10****** */ + put_queue(kbd, 0xf0 | (c >> 18)); + put_queue(kbd, 0x80 | ((c >> 12) & 0x3f)); + put_queue(kbd, 0x80 | ((c >> 6) & 0x3f)); + put_queue(kbd, 0x80 | (c & 0x3f)); + } +} + +/* + * We have a combining character DIACR here, followed by the character CH. + * If the combination occurs in the table, return the corresponding value. + * Otherwise, if CH is a space or equals DIACR, return DIACR. + * Otherwise, conclude that DIACR was not combining after all, + * queue it and return CH. + */ +static unsigned int handle_diacr(SDL_EVDEV_keyboard_state *kbd, unsigned int ch) +{ + unsigned int d = kbd->diacr; + unsigned int i, j; + + kbd->diacr = 0; + + for (i = 0; i < kbd->accents->n_accs; i++) { + if (kbd->accents->acc[i].accchar == d) { + for (j = 0; j < NUM_ACCENTCHARS; ++j) { + if (kbd->accents->acc[i].map[j][0] == 0) { // end of table + break; + } + if (kbd->accents->acc[i].map[j][0] == ch) { + return kbd->accents->acc[i].map[j][1]; + } + } + } + } + + if (ch == ' ' || ch == d) { + put_utf8(kbd, d); + return 0; + } + put_utf8(kbd, d); + + return ch; +} + +static bool vc_kbd_led(SDL_EVDEV_keyboard_state *kbd, int flag) +{ + return (kbd->ledflagstate & flag) != 0; +} + +static void chg_vc_kbd_led(SDL_EVDEV_keyboard_state *kbd, int flag) +{ + kbd->ledflagstate ^= flag; + ioctl(kbd->keyboard_fd, KDSKBSTATE, (unsigned long)(kbd->ledflagstate)); +} + +/* + * Special function handlers + */ + +static void k_self(SDL_EVDEV_keyboard_state *kbd, unsigned int value, char up_flag) +{ + if (up_flag) { + return; // no action, if this is a key release + } + + if (kbd->diacr) { + value = handle_diacr(kbd, value); + } + + if (kbd->dead_key_next) { + kbd->dead_key_next = false; + kbd->diacr = value; + return; + } + put_utf8(kbd, value); +} + +static void k_deadunicode(SDL_EVDEV_keyboard_state *kbd, unsigned int value, char up_flag) +{ + if (up_flag) + return; + + kbd->diacr = (kbd->diacr ? handle_diacr(kbd, value) : value); +} + +static void k_shift(SDL_EVDEV_keyboard_state *kbd, unsigned char value, char up_flag) +{ + int old_state = kbd->shift_state; + + if (kbd->rep) + return; + + if (up_flag) { + /* + * handle the case that two shift or control + * keys are depressed simultaneously + */ + if (kbd->shift_down[value]) { + kbd->shift_down[value]--; + } + } else + kbd->shift_down[value]++; + + if (kbd->shift_down[value]) + kbd->shift_state |= (1 << value); + else + kbd->shift_state &= ~(1 << value); + + // kludge + if (up_flag && kbd->shift_state != old_state && kbd->npadch != -1) { + put_utf8(kbd, kbd->npadch); + kbd->npadch = -1; + } +} + +void SDL_EVDEV_kbd_keycode(SDL_EVDEV_keyboard_state *kbd, unsigned int keycode, int down) +{ + keymap_t key_map; + struct keyent_t keysym; + unsigned int final_key_state; + unsigned int map_from_key_sym; + + if (!kbd) { + return; + } + + key_map = *kbd->key_map; + + kbd->rep = (down == 2); + + if (keycode < NUM_KEYS) { + if (keycode >= 89 && keycode <= 95) { + // These constitute unprintable language-related keys, so ignore them. + return; + } + if (keycode > 95) { + keycode -= 7; + } + if (vc_kbd_led(kbd, ALKED) || (kbd->shift_state & 0x8)) { + keycode += ALTGR_OFFSET; + } + keysym = key_map.key[keycode]; + } else { + return; + } + + final_key_state = kbd->shift_state & 0x7; + if ((keysym.flgs & FLAG_LOCK_C) && vc_kbd_led(kbd, LED_CAP)) { + final_key_state ^= 0x1; + } + if ((keysym.flgs & FLAG_LOCK_N) && vc_kbd_led(kbd, LED_NUM)) { + final_key_state ^= 0x1; + } + + map_from_key_sym = keysym.map[final_key_state]; + if ((keysym.spcl & (0x80 >> final_key_state)) || (map_from_key_sym & SPCLKEY)) { + // Special function. + if (map_from_key_sym == 0) + return; // Nothing to do. + if (map_from_key_sym & SPCLKEY) { + map_from_key_sym &= ~SPCLKEY; + } + if (map_from_key_sym >= F_ACC && map_from_key_sym <= L_ACC) { + // Accent function. + unsigned int accent_index = map_from_key_sym - F_ACC; + if (kbd->accents->acc[accent_index].accchar != 0) { + k_deadunicode(kbd, kbd->accents->acc[accent_index].accchar, !down); + } + } else { + switch (map_from_key_sym) { + case ASH: // alt/meta shift + k_shift(kbd, 3, down == 0); + break; + case LSHA: // left shift + alt lock + case RSHA: // right shift + alt lock + if (down == 0) { + chg_vc_kbd_led(kbd, ALKED); + } + SDL_FALLTHROUGH; + case LSH: // left shift + case RSH: // right shift + k_shift(kbd, 0, down == 0); + break; + case LCTRA: // left ctrl + alt lock + case RCTRA: // right ctrl + alt lock + if (down == 0) { + chg_vc_kbd_led(kbd, ALKED); + } + SDL_FALLTHROUGH; + case LCTR: // left ctrl + case RCTR: // right ctrl + k_shift(kbd, 1, down == 0); + break; + case LALTA: // left alt + alt lock + case RALTA: // right alt + alt lock + if (down == 0) { + chg_vc_kbd_led(kbd, ALKED); + } + SDL_FALLTHROUGH; + case LALT: // left alt + case RALT: // right alt + k_shift(kbd, 2, down == 0); + break; + case ALK: // alt lock + if (down == 1) { + chg_vc_kbd_led(kbd, ALKED); + } + break; + case CLK: // caps lock + if (down == 1) { + chg_vc_kbd_led(kbd, CLKED); + } + break; + case NLK: // num lock + if (down == 1) { + chg_vc_kbd_led(kbd, NLKED); + } + break; + case SLK: // scroll lock + if (down == 1) { + chg_vc_kbd_led(kbd, SLKED); + } + break; + default: + return; + } + } + } else { + if (map_from_key_sym == '\n' || map_from_key_sym == '\r') { + if (kbd->diacr) { + kbd->diacr = 0; + return; + } + } + if (map_from_key_sym >= ' ' && map_from_key_sym != 127) { + k_self(kbd, map_from_key_sym, !down); + } + } + + if (kbd->text_len > 0) { + kbd->text[kbd->text_len] = '\0'; + SDL_SendKeyboardText(kbd->text); + kbd->text_len = 0; + } +} + +#endif // SDL_INPUT_FBSDKBIO -- cgit v1.2.3