151 lines
3.8 KiB
C
151 lines
3.8 KiB
C
/*
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* Copyright (c) 2014 Jonas 'Sortie' Termansen.
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* Copyright (c) 2023 Juhani 'nortti' Krekelä.
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*
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* Permission to use, copy, modify, and distribute this software for any
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* purpose with or without fee is hereby granted, provided that the above
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* copyright notice and this permission notice appear in all copies.
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*
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* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
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* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*
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* chkblayout.c
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* Changes the current keyboard layout.
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*/
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#include <sys/stat.h>
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#include <display.h>
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#include <err.h>
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#include <errno.h>
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#include <error.h>
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#include <fcntl.h>
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#include <getopt.h>
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#include <ioleast.h>
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#include <locale.h>
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#include <stdbool.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <unistd.h>
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#include <termios.h>
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#define CHKBLAYOUT_ID 0
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static bool chkblayout_ack_received = false;
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static int chkblayout_error;
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static void on_ack(void* ctx, uint32_t id, int32_t error)
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{
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(void) ctx;
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if ( id != CHKBLAYOUT_ID )
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return;
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chkblayout_error = error;
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chkblayout_ack_received = true;
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}
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int main(int argc, char* argv[])
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{
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bool list = false;
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setlocale(LC_ALL, "");
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const struct option longopts[] =
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{
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{"list", no_argument, NULL, 'l'},
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{0, 0, 0, 0}
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};
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const char* opts = "l";
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int opt;
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while ( (opt = getopt_long(argc, argv, opts, longopts, NULL)) != -1 )
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{
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switch ( opt )
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{
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case 'l': list = true; break;
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default: return 1;
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}
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}
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if ( list )
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{
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if ( 0 < argc - optind )
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errx(1, "unexpected extra operand");
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execlp("ls", "ls", "/share/kblayout", (const char*) NULL);
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err(127, "ls");
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}
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const char* tty_path = "/dev/tty";
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int tty_fd = open(tty_path, O_WRONLY);
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if ( tty_fd < 0 )
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err(1, "%s", tty_path);
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if ( !isatty(tty_fd) )
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err(1, "%s", tty_path);
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if ( argc - optind == 0 )
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errx(1, "expected new keyboard layout");
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if ( 1 < argc - optind )
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errx(1, "unexpected extra operand");
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const char* kblayout_path = argv[optind];
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if ( !strchr(kblayout_path, '/') )
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{
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char* new_kblayout_path;
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if ( asprintf(&new_kblayout_path, "/share/kblayout/%s", kblayout_path) < 0 )
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err(1, "asprintf");
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kblayout_path = new_kblayout_path;
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}
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int kblayout_fd = open(kblayout_path, O_RDONLY);
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if ( kblayout_fd < 0 )
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err(1, "%s", kblayout_path);
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struct stat kblayout_st;
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if ( fstat(kblayout_fd, &kblayout_st) < 0 )
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err(1, "stat: %s", kblayout_path);
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if ( (size_t) kblayout_st.st_size != (uintmax_t) kblayout_st.st_size )
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error(1, EFBIG, "%s", kblayout_path);
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size_t kblayout_size = (size_t) kblayout_st.st_size;
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unsigned char* kblayout = (unsigned char*) malloc(kblayout_size);
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if ( !kblayout )
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err(1, "malloc");
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if ( readall(kblayout_fd, kblayout, kblayout_size) != kblayout_size )
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err(1, "read: %s", kblayout_path);
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close(kblayout_fd);
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if ( getenv("DISPLAY_SOCKET") )
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{
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struct display_connection* connection = display_connect_default();
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if ( !connection )
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err(1, "Could not connect to display server");
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display_chkblayout(connection, CHKBLAYOUT_ID, kblayout, kblayout_size);
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struct display_event_handlers handlers = {0};
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handlers.ack_handler = on_ack;
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while ( !chkblayout_ack_received )
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display_wait_event(connection, &handlers);
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if ( chkblayout_error )
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{
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errno = chkblayout_error;
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err(1, "tcsetblob: kblayout: %s", kblayout_path);
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}
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display_disconnect(connection);
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}
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else if ( tcsetblob(tty_fd, "kblayout", kblayout, kblayout_size) < 0 )
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err(1, "tcsetblob: kblayout: %s", kblayout_path);
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free(kblayout);
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close(tty_fd);
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return 0;
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}
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