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#include "config.h"
#include <stdio.h>
#include <stdlib.h>
#include <errno.h>
#include <unistd.h>
#include <getopt.h>
#include <fcntl.h>
#include <signal.h>
#include <termios.h>
#include <sys/ioctl.h>
#include <linux/kd.h>
#include <linux/keyboard.h>
#include "getfd.h"
#include "kbd_error.h"
#include "nls.h"
#include "version.h"
int tmp; /* for debugging */
int fd;
int oldkbmode;
struct termios old;
/*
* version 0.81 of showkey would restore kbmode unconditially to XLATE,
* thus making the console unusable when it was called under X.
*/
static void
get_mode(void)
{
char *m;
if (ioctl(fd, KDGKBMODE, &oldkbmode)) {
kbd_error(EXIT_FAILURE, errno, "ioctl KDGKBMODE");
}
switch (oldkbmode) {
case K_RAW:
m = "RAW";
break;
case K_XLATE:
m = "XLATE";
break;
case K_MEDIUMRAW:
m = "MEDIUMRAW";
break;
case K_UNICODE:
m = "UNICODE";
break;
default:
m = _("?UNKNOWN?");
break;
}
printf(_("kb mode was %s\n"), m);
if (oldkbmode != K_XLATE) {
printf(_("[ if you are trying this under X, it might not work\n"
"since the X server is also reading /dev/console ]\n"));
}
printf("\n");
}
static void
clean_up(void)
{
if (ioctl(fd, KDSKBMODE, oldkbmode)) {
kbd_error(EXIT_FAILURE, errno, "ioctl KDSKBMODE");
}
if (tcsetattr(fd, 0, &old) == -1)
kbd_warning(errno, "tcsetattr");
close(fd);
}
static void __attribute__((noreturn))
die(int x)
{
printf(_("caught signal %d, cleaning up...\n"), x);
clean_up();
exit(EXIT_FAILURE);
}
static void __attribute__((noreturn))
watch_dog(int x __attribute__((unused)))
{
clean_up();
exit(EXIT_SUCCESS);
}
static void __attribute__((noreturn))
usage(void)
{
fprintf(stderr, _(
"showkey version %s\n\n"
"usage: showkey [options...]\n"
"\n"
"valid options are:\n"
"\n"
" -h --help display this help text\n"
" -a --ascii display the decimal/octal/hex values of the keys\n"
" -s --scancodes display only the raw scan-codes\n"
" -k --keycodes display only the interpreted keycodes (default)\n"
" -V --version print version number\n"),
PACKAGE_VERSION);
exit(EXIT_FAILURE);
}
int main(int argc, char *argv[])
{
const char *short_opts = "haskV";
const struct option long_opts[] = {
{ "help", no_argument, NULL, 'h' },
{ "ascii", no_argument, NULL, 'a' },
{ "scancodes", no_argument, NULL, 's' },
{ "keycodes", no_argument, NULL, 'k' },
{ "version", no_argument, NULL, 'V' },
{ NULL, 0, NULL, 0 }
};
int c;
int show_keycodes = 1;
int print_ascii = 0;
struct termios new;
unsigned char buf[18]; /* divisible by 3 */
int i, n;
set_progname(argv[0]);
setlocale(LC_ALL, "");
bindtextdomain(PACKAGE_NAME, LOCALEDIR);
textdomain(PACKAGE_NAME);
while ((c = getopt_long(argc, argv,
short_opts, long_opts, NULL)) != -1) {
switch (c) {
case 's':
show_keycodes = 0;
break;
case 'k':
show_keycodes = 1;
break;
case 'a':
print_ascii = 1;
break;
case 'V':
print_version_and_exit();
case 'h':
case '?':
usage();
}
}
if (optind < argc)
usage();
if (print_ascii) {
/* no mode and signal and timer stuff - just read stdin */
fd = 0;
if (tcgetattr(fd, &old) == -1)
kbd_warning(errno, "tcgetattr");
if (tcgetattr(fd, &new) == -1)
kbd_warning(errno, "tcgetattr");
new.c_lflag &= ~(ICANON | ISIG);
new.c_lflag |= (ECHO | ECHOCTL);
new.c_iflag = 0;
new.c_cc[VMIN] = 1;
new.c_cc[VTIME] = 0;
if (tcsetattr(fd, TCSAFLUSH, &new) == -1)
kbd_warning(errno, "tcgetattr");
printf(_("\nPress any keys - "
"Ctrl-D will terminate this program\n\n"));
while (1) {
n = read(fd, buf, 1);
if (n == 1)
printf(" \t%3d 0%03o 0x%02x\n",
buf[0], buf[0], buf[0]);
if (n != 1 || buf[0] == 04)
break;
}
if (tcsetattr(fd, 0, &old) == -1)
kbd_warning(errno, "tcsetattr");
return EXIT_SUCCESS;
}
if ((fd = getfd(NULL)) < 0)
kbd_error(EXIT_FAILURE, 0, _("Couldn't get a file descriptor referring to the console"));
/* the program terminates when there is no input for 10 secs */
signal(SIGALRM, watch_dog);
/*
if we receive a signal, we want to exit nicely, in
order not to leave the keyboard in an unusable mode
*/
signal(SIGHUP, die);
signal(SIGINT, die);
signal(SIGQUIT, die);
signal(SIGILL, die);
signal(SIGTRAP, die);
signal(SIGABRT, die);
signal(SIGIOT, die);
signal(SIGFPE, die);
signal(SIGKILL, die);
signal(SIGUSR1, die);
signal(SIGSEGV, die);
signal(SIGUSR2, die);
signal(SIGPIPE, die);
signal(SIGTERM, die);
#ifdef SIGSTKFLT
signal(SIGSTKFLT, die);
#endif
signal(SIGCHLD, die);
signal(SIGCONT, die);
signal(SIGSTOP, die);
signal(SIGTSTP, die);
signal(SIGTTIN, die);
signal(SIGTTOU, die);
get_mode();
if (tcgetattr(fd, &old) == -1)
kbd_warning(errno, "tcgetattr");
if (tcgetattr(fd, &new) == -1)
kbd_warning(errno, "tcgetattr");
new.c_lflag &= ~(ICANON | ECHO | ISIG);
new.c_iflag = 0;
new.c_cc[VMIN] = sizeof(buf);
new.c_cc[VTIME] = 1; /* 0.1 sec intercharacter timeout */
if (tcsetattr(fd, TCSAFLUSH, &new) == -1)
kbd_warning(errno, "tcsetattr");
if (ioctl(fd, KDSKBMODE, show_keycodes ? K_MEDIUMRAW : K_RAW)) {
kbd_error(EXIT_FAILURE, errno, "ioctl KDSKBMODE");
}
printf(_("press any key (program terminates 10s after last keypress)...\n"));
/* show scancodes */
if (!show_keycodes) {
while (1) {
alarm(10);
n = read(fd, buf, sizeof(buf));
for (i = 0; i < n; i++)
printf("0x%02x ", buf[i]);
printf("\n");
}
clean_up();
return EXIT_SUCCESS;
}
/* show keycodes - 2.6 allows 3-byte reports */
while (1) {
alarm(10);
n = read(fd, buf, sizeof(buf));
i = 0;
while (i < n) {
int kc;
char *s;
s = (buf[i] & 0x80) ? _("release") : _("press");
if (i + 2 < n && (buf[i] & 0x7f) == 0 && (buf[i + 1] & 0x80) != 0 && (buf[i + 2] & 0x80) != 0) {
kc = ((buf[i + 1] & 0x7f) << 7) |
(buf[i + 2] & 0x7f);
i += 3;
} else {
kc = (buf[i] & 0x7f);
i++;
}
printf(_("keycode %3d %s\n"), kc, s);
}
}
clean_up();
return EXIT_SUCCESS;
}
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