libxkbcommon/test/interactive-evdev.c

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/*
* Copyright © 2012 Ran Benita <ran234@gmail.com>
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice (including the next
* paragraph) shall be included in all copies or substantial portions of the
* Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
* DEALINGS IN THE SOFTWARE.
*/
#include <dirent.h>
#include <errno.h>
#include <fcntl.h>
#include <fnmatch.h>
#include <limits.h>
#include <locale.h>
#include <signal.h>
#include <string.h>
#include <unistd.h>
#include <sys/epoll.h>
#include <linux/input.h>
#include "test.h"
struct keyboard {
char *path;
int fd;
struct xkb_state *state;
struct xkb_compose_state *compose_state;
struct keyboard *next;
};
static bool terminate;
static int evdev_offset = 8;
static bool report_state_changes;
static bool with_compose;
#define NLONGS(n) (((n) + LONG_BIT - 1) / LONG_BIT)
static bool
evdev_bit_is_set(const unsigned long *array, int bit)
{
return array[bit / LONG_BIT] & (1LL << (bit % LONG_BIT));
}
/* Some heuristics to see if the device is a keyboard. */
static bool
is_keyboard(int fd)
{
int i;
unsigned long evbits[NLONGS(EV_CNT)] = { 0 };
unsigned long keybits[NLONGS(KEY_CNT)] = { 0 };
errno = 0;
ioctl(fd, EVIOCGBIT(0, sizeof(evbits)), evbits);
if (errno)
return false;
if (!evdev_bit_is_set(evbits, EV_KEY))
return false;
errno = 0;
ioctl(fd, EVIOCGBIT(EV_KEY, sizeof(keybits)), keybits);
if (errno)
return false;
for (i = KEY_RESERVED; i <= KEY_MIN_INTERESTING; i++)
if (evdev_bit_is_set(keybits, i))
return true;
return false;
}
static int
keyboard_new(struct dirent *ent, struct xkb_keymap *keymap,
struct xkb_compose_table *compose_table, struct keyboard **out)
{
int ret;
char *path;
int fd;
struct xkb_state *state;
struct xkb_compose_state *compose_state = NULL;
struct keyboard *kbd;
ret = asprintf(&path, "/dev/input/%s", ent->d_name);
if (ret < 0)
return -ENOMEM;
fd = open(path, O_NONBLOCK | O_CLOEXEC | O_RDONLY);
if (fd < 0) {
ret = -errno;
goto err_path;
}
if (!is_keyboard(fd)) {
/* Dummy "skip this device" value. */
ret = -ENOTSUP;
goto err_fd;
}
state = xkb_state_new(keymap);
if (!state) {
fprintf(stderr, "Couldn't create xkb state for %s\n", path);
ret = -EFAULT;
goto err_fd;
}
if (with_compose) {
compose_state = xkb_compose_state_new(compose_table,
XKB_COMPOSE_STATE_NO_FLAGS);
if (!compose_state) {
fprintf(stderr, "Couldn't create compose state for %s\n", path);
ret = -EFAULT;
goto err_state;
}
}
kbd = calloc(1, sizeof(*kbd));
if (!kbd) {
ret = -ENOMEM;
goto err_compose_state;
}
kbd->path = path;
kbd->fd = fd;
kbd->state = state;
kbd->compose_state = compose_state;
*out = kbd;
return 0;
err_compose_state:
xkb_compose_state_unref(compose_state);
err_state:
xkb_state_unref(state);
err_fd:
close(fd);
err_path:
free(path);
return ret;
}
static void
keyboard_free(struct keyboard *kbd)
{
if (!kbd)
return;
if (kbd->fd >= 0)
close(kbd->fd);
free(kbd->path);
xkb_state_unref(kbd->state);
xkb_compose_state_unref(kbd->compose_state);
free(kbd);
}
static int
filter_device_name(const struct dirent *ent)
{
return !fnmatch("event*", ent->d_name, 0);
}
static struct keyboard *
get_keyboards(struct xkb_keymap *keymap,
struct xkb_compose_table *compose_table)
{
int ret, i, nents;
struct dirent **ents;
struct keyboard *kbds = NULL, *kbd = NULL;
nents = scandir("/dev/input", &ents, filter_device_name, alphasort);
if (nents < 0) {
fprintf(stderr, "Couldn't scan /dev/input: %s\n", strerror(errno));
return NULL;
}
for (i = 0; i < nents; i++) {
ret = keyboard_new(ents[i], keymap, compose_table, &kbd);
if (ret) {
if (ret == -EACCES) {
fprintf(stderr, "Couldn't open /dev/input/%s: %s. "
"You probably need root to run this.\n",
ents[i]->d_name, strerror(-ret));
break;
}
if (ret != -ENOTSUP) {
fprintf(stderr, "Couldn't open /dev/input/%s: %s. Skipping.\n",
ents[i]->d_name, strerror(-ret));
}
continue;
}
kbd->next = kbds;
kbds = kbd;
}
if (!kbds) {
fprintf(stderr, "Couldn't find any keyboards I can use! Quitting.\n");
goto err;
}
err:
for (i = 0; i < nents; i++)
free(ents[i]);
free(ents);
return kbds;
}
static void
free_keyboards(struct keyboard *kbds)
{
struct keyboard *next;
while (kbds) {
next = kbds->next;
keyboard_free(kbds);
kbds = next;
}
}
/* The meaning of the input_event 'value' field. */
enum {
KEY_STATE_RELEASE = 0,
KEY_STATE_PRESS = 1,
KEY_STATE_REPEAT = 2,
};
static void
process_event(struct keyboard *kbd, uint16_t type, uint16_t code, int32_t value)
{
xkb_keycode_t keycode;
struct xkb_keymap *keymap;
enum xkb_state_component changed;
enum xkb_compose_status status;
if (type != EV_KEY)
return;
keycode = evdev_offset + code;
keymap = xkb_state_get_keymap(kbd->state);
if (value == KEY_STATE_REPEAT && !xkb_keymap_key_repeats(keymap, keycode))
return;
if (with_compose && value != KEY_STATE_RELEASE) {
xkb_keysym_t keysym = xkb_state_key_get_one_sym(kbd->state, keycode);
xkb_compose_state_feed(kbd->compose_state, keysym);
}
if (value != KEY_STATE_RELEASE)
test_print_keycode_state(kbd->state, kbd->compose_state, keycode);
if (with_compose) {
status = xkb_compose_state_get_status(kbd->compose_state);
if (status == XKB_COMPOSE_CANCELLED || status == XKB_COMPOSE_COMPOSED)
xkb_compose_state_reset(kbd->compose_state);
}
if (value == KEY_STATE_RELEASE)
changed = xkb_state_update_key(kbd->state, keycode, XKB_KEY_UP);
else
changed = xkb_state_update_key(kbd->state, keycode, XKB_KEY_DOWN);
if (report_state_changes)
test_print_state_changes(changed);
}
static int
read_keyboard(struct keyboard *kbd)
{
ssize_t len;
struct input_event evs[16];
/* No fancy error checking here. */
while ((len = read(kbd->fd, &evs, sizeof(evs))) > 0) {
Fix some cppcheck warnings Someone was nice enough to run this for us: ftp://ftp.sunet.se/pub/Linux/distributions/Debian/debian/pool/main/libx/libxkbcommon/libxkbcommon_0.3.1.orig.tar.gz [libxkbcommon-0.3.1/src/keymap.c:86]: (style) The scope of the variable 'j' can be reduced. [libxkbcommon-0.3.1/src/keymap.c:87]: (style) The scope of the variable 'key' can be reduced. [libxkbcommon-0.3.1/src/keysym-utf.c:843]: (style) The scope of the variable 'mid' can be reduced. [libxkbcommon-0.3.1/src/state.c:992]: (style) The scope of the variable 'str' can be reduced. [libxkbcommon-0.3.1/src/xkbcomp/action.c:467]: (style) The scope of the variable 'absolute' can be reduced. [libxkbcommon-0.3.1/src/xkbcomp/rules.c:468]: (style) The scope of the variable 'consumed' can be reduced. [libxkbcommon-0.3.1/src/xkbcomp/rules.c:862]: (style) The scope of the variable 'mlvo' can be reduced. [libxkbcommon-0.3.1/src/xkbcomp/rules.c:863]: (style) The scope of the variable 'kccgst' can be reduced. [libxkbcommon-0.3.1/src/xkbcomp/rules.c:865]: (style) The scope of the variable 'match_type' can be reduced. [libxkbcommon-0.3.1/src/xkbcomp/symbols.c:753]: (style) The scope of the variable 'toAct' can be reduced. [libxkbcommon-0.3.1/src/xkbcomp/symbols.c:1573]: (style) The scope of the variable 'key' can be reduced. [libxkbcommon-0.3.1/test/common.c:80]: (warning) %d in format string (no. 1) requires 'int' but the argument type is 'unsigned int'. [libxkbcommon-0.3.1/test/interactive.c:358]: (style) The scope of the variable 'nevs' can be reduced. [libxkbcommon-0.3.1/test/interactive.c:236]: (style) Checking if unsigned variable 'nsyms' is less than zero. [libxkbcommon-0.3.1/test/interactive.c:226]: (style) Unused variable: unicode Signed-off-by: Ran Benita <ran234@gmail.com>
2014-01-11 07:40:42 -07:00
const size_t nevs = len / sizeof(struct input_event);
for (size_t i = 0; i < nevs; i++)
process_event(kbd, evs[i].type, evs[i].code, evs[i].value);
}
if (len < 0 && errno != EWOULDBLOCK) {
Fix some cppcheck warnings Someone was nice enough to run this for us: ftp://ftp.sunet.se/pub/Linux/distributions/Debian/debian/pool/main/libx/libxkbcommon/libxkbcommon_0.3.1.orig.tar.gz [libxkbcommon-0.3.1/src/keymap.c:86]: (style) The scope of the variable 'j' can be reduced. [libxkbcommon-0.3.1/src/keymap.c:87]: (style) The scope of the variable 'key' can be reduced. [libxkbcommon-0.3.1/src/keysym-utf.c:843]: (style) The scope of the variable 'mid' can be reduced. [libxkbcommon-0.3.1/src/state.c:992]: (style) The scope of the variable 'str' can be reduced. [libxkbcommon-0.3.1/src/xkbcomp/action.c:467]: (style) The scope of the variable 'absolute' can be reduced. [libxkbcommon-0.3.1/src/xkbcomp/rules.c:468]: (style) The scope of the variable 'consumed' can be reduced. [libxkbcommon-0.3.1/src/xkbcomp/rules.c:862]: (style) The scope of the variable 'mlvo' can be reduced. [libxkbcommon-0.3.1/src/xkbcomp/rules.c:863]: (style) The scope of the variable 'kccgst' can be reduced. [libxkbcommon-0.3.1/src/xkbcomp/rules.c:865]: (style) The scope of the variable 'match_type' can be reduced. [libxkbcommon-0.3.1/src/xkbcomp/symbols.c:753]: (style) The scope of the variable 'toAct' can be reduced. [libxkbcommon-0.3.1/src/xkbcomp/symbols.c:1573]: (style) The scope of the variable 'key' can be reduced. [libxkbcommon-0.3.1/test/common.c:80]: (warning) %d in format string (no. 1) requires 'int' but the argument type is 'unsigned int'. [libxkbcommon-0.3.1/test/interactive.c:358]: (style) The scope of the variable 'nevs' can be reduced. [libxkbcommon-0.3.1/test/interactive.c:236]: (style) Checking if unsigned variable 'nsyms' is less than zero. [libxkbcommon-0.3.1/test/interactive.c:226]: (style) Unused variable: unicode Signed-off-by: Ran Benita <ran234@gmail.com>
2014-01-11 07:40:42 -07:00
fprintf(stderr, "Couldn't read %s: %s\n", kbd->path, strerror(errno));
return -errno;
}
return 0;
}
static int
loop(struct keyboard *kbds)
{
int i, ret;
int epfd;
struct keyboard *kbd;
struct epoll_event ev;
struct epoll_event evs[16];
epfd = epoll_create1(0);
if (epfd < 0) {
fprintf(stderr, "Couldn't create epoll instance: %s\n",
strerror(errno));
return -errno;
}
for (kbd = kbds; kbd; kbd = kbd->next) {
memset(&ev, 0, sizeof(ev));
ev.events = EPOLLIN;
ev.data.ptr = kbd;
ret = epoll_ctl(epfd, EPOLL_CTL_ADD, kbd->fd, &ev);
if (ret) {
ret = -errno;
fprintf(stderr, "Couldn't add %s to epoll: %s\n",
kbd->path, strerror(errno));
goto err_epoll;
}
}
while (!terminate) {
ret = epoll_wait(epfd, evs, 16, -1);
if (ret < 0) {
if (errno == EINTR)
continue;
ret = -errno;
fprintf(stderr, "Couldn't poll for events: %s\n",
strerror(errno));
goto err_epoll;
}
for (i = 0; i < ret; i++) {
kbd = evs[i].data.ptr;
ret = read_keyboard(kbd);
if (ret) {
goto err_epoll;
}
}
}
close(epfd);
return 0;
err_epoll:
close(epfd);
return ret;
}
static void
sigintr_handler(int signum)
{
terminate = true;
}
int
main(int argc, char *argv[])
{
int ret;
int opt;
struct keyboard *kbds;
struct xkb_context *ctx;
struct xkb_keymap *keymap;
struct xkb_compose_table *compose_table = NULL;
const char *rules = NULL;
const char *model = NULL;
const char *layout = NULL;
const char *variant = NULL;
const char *options = NULL;
const char *keymap_path = NULL;
const char *locale;
struct sigaction act;
setlocale(LC_ALL, "");
while ((opt = getopt(argc, argv, "r:m:l:v:o:k:n:cd")) != -1) {
switch (opt) {
case 'r':
rules = optarg;
break;
case 'm':
model = optarg;
break;
case 'l':
layout = optarg;
break;
case 'v':
variant = optarg;
break;
case 'o':
options = optarg;
break;
case 'k':
keymap_path = optarg;
break;
case 'n':
errno = 0;
evdev_offset = strtol(optarg, NULL, 10);
if (errno) {
fprintf(stderr, "error: -n option expects a number\n");
exit(EXIT_FAILURE);
}
break;
case 'c':
report_state_changes = true;
break;
case 'd':
with_compose = true;
break;
case '?':
fprintf(stderr, " Usage: %s [-r <rules>] [-m <model>] "
"[-l <layout>] [-v <variant>] [-o <options>]\n",
argv[0]);
fprintf(stderr, " or: %s -k <path to keymap file>\n",
argv[0]);
fprintf(stderr, "For both: -n <evdev keycode offset>\n"
" -c (to report changes to the state)\n"
" -d (to enable compose)\n");
exit(2);
}
}
ctx = test_get_context(0);
if (!ctx) {
ret = -1;
fprintf(stderr, "Couldn't create xkb context\n");
goto err_out;
}
if (keymap_path) {
FILE *file = fopen(keymap_path, "r");
if (!file) {
ret = EXIT_FAILURE;
fprintf(stderr, "Couldn't open '%s': %s\n",
keymap_path, strerror(errno));
goto err_ctx;
}
keymap = xkb_keymap_new_from_file(ctx, file,
XKB_KEYMAP_FORMAT_TEXT_V1, 0);
fclose(file);
}
else {
keymap = test_compile_rules(ctx, rules, model, layout, variant,
options);
}
if (!keymap) {
ret = -1;
fprintf(stderr, "Couldn't create xkb keymap\n");
goto err_ctx;
}
if (with_compose) {
locale = setlocale(LC_CTYPE, NULL);
compose_table =
xkb_compose_table_new_from_locale(ctx, locale,
XKB_COMPOSE_COMPILE_NO_FLAGS);
if (!compose_table) {
ret = -1;
fprintf(stderr, "Couldn't create compose from locale\n");
goto err_xkb;
}
}
kbds = get_keyboards(keymap, compose_table);
if (!kbds) {
ret = -1;
goto err_compose;
}
act.sa_handler = sigintr_handler;
sigemptyset(&act.sa_mask);
act.sa_flags = 0;
sigaction(SIGINT, &act, NULL);
sigaction(SIGTERM, &act, NULL);
/* Instead of fiddling with termios.. */
(void) system("stty -echo");
ret = loop(kbds);
if (ret)
goto err_stty;
err_stty:
(void) system("stty echo");
free_keyboards(kbds);
err_compose:
xkb_compose_table_unref(compose_table);
err_xkb:
xkb_keymap_unref(keymap);
err_ctx:
xkb_context_unref(ctx);
err_out:
exit(ret == 0 ? EXIT_SUCCESS : EXIT_FAILURE);
}