void test_create_device(struct uinput_device **uidev_return,
struct libevdev **dev_return,
...)
{
int rc, fd;
struct uinput_device *uidev;
struct libevdev *dev;
va_list args;
va_start(args, dev_return);
rc = uinput_device_new_with_events_v(&uidev, TEST_DEVICE_NAME, DEFAULT_IDS, args);
va_end(args);
ck_assert_msg(rc == 0, "Failed to create uinput device: %s", strerror(-rc));
fd = uinput_device_get_fd(uidev);
rc = libevdev_new_from_fd(fd, &dev);
ck_assert_msg(rc == 0, "Failed to init device device: %s", strerror(-rc));
rc = fcntl(fd, F_SETFL, O_NONBLOCK);
ck_assert_msg(rc == 0, "fcntl failed: %s", strerror(errno));
*uidev_return = uidev;
*dev_return = dev;
}
struct adhoc* adhoc_init(int fd) {
struct adhoc *adhoc = calloc(1, sizeof(struct adhoc));
int r = libevdev_new_from_fd(fd, &adhoc->dev);
if (r) {
error(0, -r, "libevdev_new_from_fd failed");
goto creation_error;
}
const char *name = libevdev_get_name(adhoc->dev);
if (strcmp(name, "SMART SB680 Interactive Whiteboard") == 0)
adhoc->internal_calls = internal_calls_sb680;
else if (strcmp(name, "SMART SB885 Interactive Whiteboard") == 0)
adhoc->internal_calls = internal_calls_sb885;
else {
fprintf(stderr, "unknown device: %s\n", name);
goto device_error;
}
#ifdef DEBUG
fprintf(stderr, "device: %s\n", name);
#endif
if (adhoc->internal_calls.init(adhoc))
goto device_error;
return adhoc;
device_error:
libevdev_free(adhoc->dev);
creation_error:
free(adhoc);
return NULL;
}
int
main (int argc, char **argv) {
int rc;
int fd;
const char *path;
struct libevdev *dev;
struct measurements measurements = {0};
if (argc < 2)
return usage();
path = argv[1];
if (path[0] == '-')
return usage();
fd = open(path, O_RDONLY|O_NONBLOCK);
if (fd < 0) {
fprintf(stderr, "Error opening the device: %s\n", strerror(errno));
return 1;
}
rc = libevdev_new_from_fd(fd, &dev);
if (rc != 0) {
fprintf(stderr, "Error fetching the device info: %s\n", strerror(-rc));
return 1;
}
if (libevdev_grab(dev, LIBEVDEV_GRAB) != 0) {
fprintf(stderr, "Error: cannot grab the device, something else is grabbing it.\n");
fprintf(stderr, "Use 'fuser -v %s' to find processes with an open fd\n", path);
return 1;
}
libevdev_grab(dev, LIBEVDEV_UNGRAB);
printf("Mouse %s on %s\n", libevdev_get_name(dev), path);
printf("Move the device 250mm/10in or more along the x-axis.\n");
printf("Pause 3 seconds before movement to reset, Ctrl+C to exit.\n");
setbuf(stdout, NULL);
rc = mainloop(dev, &measurements);
printf("\n");
print_summary(&measurements);
printf("\n");
printf("Entry for hwdb match (replace XXX with the resolution in DPI):\n"
"mouse:%s:v%04xp%04x:name:%s:\n"
" MOUSE_DPI=XXX@%d\n",
bustype(libevdev_get_id_bustype(dev)),
libevdev_get_id_vendor(dev),
libevdev_get_id_product(dev),
libevdev_get_name(dev),
(int)measurements.max_frequency);
libevdev_free(dev);
close(fd);
return rc;
}
void joystick_linux::open_joystick(const char *p_path) {
int joy_num = get_free_joy_slot();
int fd = open(p_path, O_RDONLY | O_NONBLOCK);
if (fd != -1 && joy_num != -1) {
int rc = libevdev_new_from_fd(fd, &joysticks[joy_num].dev);
if (rc < 0) {
fprintf(stderr, "Failed to init libevdev (%s)\n", strerror(-rc));
return;
}
libevdev *dev = joysticks[joy_num].dev;
//check if the device supports basic gamepad events, prevents certain keyboards from
//being detected as joysticks
if (libevdev_has_event_type(dev, EV_ABS) && libevdev_has_event_type(dev, EV_KEY) &&
(libevdev_has_event_code(dev, EV_KEY, BTN_A) || libevdev_has_event_code(dev, EV_KEY, BTN_THUMBL) || libevdev_has_event_code(dev, EV_KEY, BTN_TOP))) {
char uid[128];
String name = libevdev_get_name(dev);
uint16_t bus = __bswap_16(libevdev_get_id_bustype(dev));
uint16_t vendor = __bswap_16(libevdev_get_id_vendor(dev));
uint16_t product = __bswap_16(libevdev_get_id_product(dev));
uint16_t version = __bswap_16(libevdev_get_id_version(dev));
joysticks[joy_num].reset();
Joystick &joy = joysticks[joy_num];
joy.fd = fd;
joy.devpath = String(p_path);
setup_joystick_properties(joy_num);
sprintf(uid, "%04x%04x", bus, 0);
if (vendor && product && version) {
sprintf(uid + String(uid).length(), "%04x%04x%04x%04x%04x%04x", vendor,0,product,0,version,0);
input->joy_connection_changed(joy_num, true, name, uid);
}
else {
String uidname = uid;
int uidlen = MIN(name.length(), 11);
for (int i=0; i<uidlen; i++) {
uidname = uidname + _hex_str(name[i]);
}
uidname += "00";
input->joy_connection_changed(joy_num, true, name, uidname);
}
}
else {
//device is not a gamepad, clean up
libevdev_free(dev);
close(fd);
}
}
}
int _libevdev_new_from_fd(lua_State* const state)
{
libevdev* dev;
lua::push(state, libevdev_new_from_fd(
lua::get<int>(state, 1),
&dev
));
lua::push(state, dev);
return 2;
}
END_TEST
START_TEST(test_uinput_create_device_from_fd)
{
struct libevdev *dev, *dev2;
struct libevdev_uinput *uidev;
int fd, fd2;
unsigned int type, code;
int rc;
const char *devnode;
dev = libevdev_new();
ck_assert(dev != NULL);
libevdev_set_name(dev, TEST_DEVICE_NAME);
libevdev_enable_event_type(dev, EV_SYN);
libevdev_enable_event_type(dev, EV_REL);
libevdev_enable_event_code(dev, EV_REL, REL_X, NULL);
libevdev_enable_event_code(dev, EV_REL, REL_Y, NULL);
fd = open(UINPUT_NODE, O_RDWR);
ck_assert_int_gt(fd, -1);
rc = libevdev_uinput_create_from_device(dev, fd, &uidev);
ck_assert_int_eq(rc, 0);
ck_assert(uidev != NULL);
ck_assert_int_eq(libevdev_uinput_get_fd(uidev), fd);
devnode = libevdev_uinput_get_devnode(uidev);
ck_assert(devnode != NULL);
fd2 = open(devnode, O_RDONLY);
ck_assert_int_gt(fd2, -1);
rc = libevdev_new_from_fd(fd2, &dev2);
ck_assert_int_eq(rc, 0);
for (type = 0; type < EV_CNT; type++) {
int max = libevdev_event_type_get_max(type);
if (max == -1)
continue;
for (code = 0; code < max; code++) {
ck_assert_int_eq(libevdev_has_event_code(dev, type, code),
libevdev_has_event_code(dev2, type, code));
}
}
libevdev_free(dev);
libevdev_free(dev2);
libevdev_uinput_destroy(uidev);
close(fd);
close(fd2);
}
int power_key_resume_handler_init(void)
{
const char *node_path;
char *full_path;
GDir *input_dir;
int rc = 1;
struct libevdev *dev = NULL;
input_dir = g_dir_open("/dev/input", 0, NULL);
if (!input_dir) {
g_warning("Failed to reach /dev/input directory");
return -ENODEV;
}
while ((node_path = g_dir_read_name(input_dir)) != NULL) {
full_path = g_strdup_printf("/dev/input/%s", node_path);
if (g_file_test(node_path, G_FILE_TEST_IS_DIR))
continue;
input_source_fd = open(full_path, O_RDONLY|O_NONBLOCK);
g_free(full_path);
if (input_source_fd < 0)
continue;
rc = libevdev_new_from_fd(input_source_fd, &dev);
if (rc < 0) {
fprintf(stderr, "Failed to init libevdev (%s)\n", strerror(-rc));
close(input_source_fd);
input_source_fd = -1;
continue;
}
if (libevdev_has_event_code(dev, EV_KEY, KEY_POWER)) {
libevdev_free(dev);
break;
}
libevdev_free(dev);
close(input_source_fd);
input_source_fd = -1;
}
if (input_source_fd < 0)
return -ENODEV;
channel = g_io_channel_unix_new(input_source_fd);
g_io_channel_set_encoding(channel, NULL, NULL);
readwatch = g_io_add_watch(channel, G_IO_IN | G_IO_HUP | G_IO_NVAL, _handle_input_event, NULL);
return 0;
}
evdevDevice::evdevDevice(const std::string& devnode) : m_devfile(devnode)
{
// The device file will be read on one of the main threads, so we open in non-blocking mode.
m_fd = open(devnode.c_str(), O_RDWR | O_NONBLOCK);
int ret = libevdev_new_from_fd(m_fd, &m_dev);
if (ret != 0)
{
// This useally fails because the device node isn't an evdev device, such as /dev/input/js0
m_initialized = false;
close(m_fd);
return;
}
m_name = StripSpaces(libevdev_get_name(m_dev));
// Controller buttons (and keyboard keys)
int num_buttons = 0;
for (int key = 0; key < KEY_MAX; key++)
if (libevdev_has_event_code(m_dev, EV_KEY, key))
AddInput(new Button(num_buttons++, key, m_dev));
// Absolute axis (thumbsticks)
int num_axis = 0;
for (int axis = 0; axis < 0x100; axis++)
if (libevdev_has_event_code(m_dev, EV_ABS, axis))
{
AddAnalogInputs(new Axis(num_axis, axis, false, m_dev),
new Axis(num_axis, axis, true, m_dev));
num_axis++;
}
// Force feedback
if (libevdev_has_event_code(m_dev, EV_FF, FF_PERIODIC))
{
for (auto type : {FF_SINE, FF_SQUARE, FF_TRIANGLE, FF_SAW_UP, FF_SAW_DOWN})
if (libevdev_has_event_code(m_dev, EV_FF, type))
AddOutput(new ForceFeedback(type, m_dev));
}
if (libevdev_has_event_code(m_dev, EV_FF, FF_RUMBLE))
{
AddOutput(new ForceFeedback(FF_RUMBLE, m_dev));
}
// TODO: Add leds as output devices
m_initialized = true;
m_interesting = num_axis >= 2 || num_buttons >= 8;
}
bool evdevDevice::IsValid() const
{
int current_fd = libevdev_get_fd(m_dev);
if (current_fd == -1)
return false;
libevdev* device;
if (libevdev_new_from_fd(current_fd, &device) != 0)
{
close(current_fd);
return false;
}
libevdev_free(device);
return true;
}
void test_create_abs_device(struct uinput_device **uidev_return,
struct libevdev **dev_return,
int nabs,
const struct input_absinfo *abs,
...)
{
int rc, fd;
struct uinput_device *uidev;
struct libevdev *dev;
va_list args;
uidev = uinput_device_new(TEST_DEVICE_NAME);
ck_assert(uidev != NULL);
va_start(args, abs);
rc = uinput_device_set_event_bits_v(uidev, args);
va_end(args);
while (--nabs >= 0) {
int code;
struct input_absinfo a;
code = abs[nabs].value;
a = abs[nabs];
a.value = 0;
rc = uinput_device_set_abs_bit(uidev, code, &a);
ck_assert_msg(rc == 0, "for abs field %d\n", nabs);
}
rc = uinput_device_create(uidev);
ck_assert_msg(rc == 0, "Failed to create uinput device: %s", strerror(-rc));
fd = uinput_device_get_fd(uidev);
rc = libevdev_new_from_fd(fd, &dev);
ck_assert_msg(rc == 0, "Failed to init device device: %s", strerror(-rc));
rc = fcntl(fd, F_SETFL, O_NONBLOCK);
ck_assert_msg(rc == 0, "fcntl failed: %s", strerror(errno));
*uidev_return = uidev;
*dev_return = dev;
}
END_TEST
START_TEST(test_uinput_properties)
{
struct libevdev *dev, *dev2;
struct libevdev_uinput *uidev;
int fd;
int rc;
const char *devnode;
dev = libevdev_new();
ck_assert(dev != NULL);
libevdev_set_name(dev, TEST_DEVICE_NAME);
libevdev_enable_event_type(dev, EV_SYN);
libevdev_enable_event_type(dev, EV_REL);
libevdev_enable_event_type(dev, EV_KEY);
libevdev_enable_event_code(dev, EV_REL, REL_X, NULL);
libevdev_enable_event_code(dev, EV_REL, REL_Y, NULL);
libevdev_enable_event_code(dev, EV_KEY, BTN_LEFT, NULL);
libevdev_enable_property(dev, INPUT_PROP_BUTTONPAD);
libevdev_enable_property(dev, INPUT_PROP_MAX);
rc = libevdev_uinput_create_from_device(dev, LIBEVDEV_UINPUT_OPEN_MANAGED, &uidev);
ck_assert_int_eq(rc, 0);
ck_assert(uidev != NULL);
devnode = libevdev_uinput_get_devnode(uidev);
ck_assert(devnode != NULL);
fd = open(devnode, O_RDONLY);
ck_assert_int_gt(fd, -1);
rc = libevdev_new_from_fd(fd, &dev2);
ck_assert_int_eq(rc, 0);
ck_assert(libevdev_has_property(dev2, INPUT_PROP_BUTTONPAD));
ck_assert(libevdev_has_property(dev2, INPUT_PROP_MAX));
libevdev_free(dev);
libevdev_free(dev2);
libevdev_uinput_destroy(uidev);
close(fd);
}
int main(int argc, char **argv)
{
struct libevdev *dev = NULL;
struct libevdev_uinput *uidev = NULL;
int fd, ret;
if (argc < 2){
fprintf(stderr, "Usage: %s <event device>\n", argv[0]);
return 1;
}
//open the event device file descriptor
fd = open(argv[1], O_RDONLY);
if (fd < 0) {perror("Failed to open device"); return fd;}
//create a libevdev device from the event file descriptor
ret = libevdev_new_from_fd(fd, &dev);
if (ret < 0) {perror("Failed to create libevdev device"); return ret;}
//create a device connected to the virtual device interface /dev/uinput
ret = libevdev_uinput_create_from_device(
dev,
LIBEVDEV_UINPUT_OPEN_MANAGED,
&uidev);
if (ret < 0) {perror("Failed to create uinput device"); return ret;}
sleep(1);
//EVIOCGRAB the event, this means no other client will receive the events from the device, including your window manager.
// "This is generally a bad idea. Don't do this." - libevdev documentation
//We need to do this to avoid douplicate keyboard events.
ret = libevdev_grab(dev, LIBEVDEV_GRAB);
//start the interceptor and never return
intercept(uidev, dev);
libevdev_uinput_destroy(uidev);
libevdev_grab(dev, LIBEVDEV_UNGRAB);
libevdev_free(dev);
return ret;
}
int
main(int argc, char **argv)
{
struct libevdev *dev = NULL;
int fd = -1;
int rc = EXIT_FAILURE;
enum mode mode;
const char *path;
struct input_absinfo absinfo;
int axis = -1;
int led = -1;
int led_state = -1;
unsigned int changes = 0; /* bitmask of changes */
int xres = 0,
yres = 0;
mode = parse_options_mode(argc, argv);
switch (mode) {
case MODE_HELP:
rc = EXIT_SUCCESS;
/* fallthrough */
case MODE_NONE:
usage();
goto out;
case MODE_ABS:
rc = parse_options_abs(argc, argv, &changes, &axis,
&absinfo);
break;
case MODE_LED:
rc = parse_options_led(argc, argv, &led, &led_state);
break;
case MODE_RESOLUTION:
rc = parse_options_resolution(argc, argv, &xres,
&yres);
break;
default:
fprintf(stderr,
"++?????++ Out of Cheese Error. Redo From Start.\n");
goto out;
}
if (rc != EXIT_SUCCESS)
goto out;
if (optind >= argc) {
rc = EXIT_FAILURE;
usage();
goto out;
}
path = argv[optind];
fd = open(path, O_RDWR);
if (fd < 0) {
rc = EXIT_FAILURE;
perror("Failed to open device");
goto out;
}
rc = libevdev_new_from_fd(fd, &dev);
if (rc < 0) {
fprintf(stderr, "Failed to init libevdev (%s)\n", strerror(-rc));
goto out;
}
switch (mode) {
case MODE_ABS:
set_abs(dev, changes, axis, &absinfo);
break;
case MODE_LED:
set_led(dev, led, led_state);
break;
case MODE_RESOLUTION:
set_resolution(dev, xres, yres);
break;
default:
break;
}
out:
libevdev_free(dev);
if (fd != -1)
close(fd);
return rc;
}
int main(int argc, char const *argv[])
{
if (argc < 5) {
printf("Usage: evmpd HOSTNAME PORT DEVICE HALT_COMMAND\n");
return EXIT_FAILURE;
}
struct mpd_connection *client = connect(argv[1], strtol(argv[2], NULL, 10));
struct libevdev *dev = NULL;
int fd;
int rc = 1;
fd = open(argv[3], O_RDONLY | O_NONBLOCK);
rc = libevdev_new_from_fd(fd, &dev);
if (rc < 0) {
fprintf(stderr, "Failed to init libevdev (%d)\n", strerror(-rc));
return EXIT_FAILURE;
}
printf("Input device name: \"%s\"\n", libevdev_get_name(dev));
printf("Input device ID: bus %#x vendor %#x product %#x\n",
libevdev_get_id_bustype(dev),
libevdev_get_id_vendor(dev), libevdev_get_id_product(dev));
do {
struct input_event ev;
rc = libevdev_next_event(dev, LIBEVDEV_READ_FLAG_NORMAL, &ev);
if (rc == 0 && ev.value == 0) {
if (libevdev_event_is_code(&ev, EV_KEY, KEY_F4)) {
system(argv[4]);
printf("shutdown\n");
} else if (libevdev_event_is_code(&ev, EV_KEY, KEY_PLAYPAUSE)) {
struct mpd_status *status = mpd_run_status(client);
enum mpd_state state = mpd_status_get_state(status);
if (state != MPD_STATE_PLAY && state != MPD_STATE_PAUSE) {
mpd_run_play(client);
printf("play\n");
} else {
mpd_run_toggle_pause(client);
printf("toggle-pause\n");
}
} else if (libevdev_event_is_code(&ev, EV_KEY, KEY_STOPCD)) {
mpd_run_stop(client);
printf("stop\n");
} else if (libevdev_event_is_code(&ev, EV_KEY, KEY_PREVIOUSSONG)) {
mpd_run_previous(client);
printf("previous\n");
} else if (libevdev_event_is_code(&ev, EV_KEY, KEY_NEXTSONG)) {
mpd_run_next(client);
printf("next\n");
} else if (libevdev_event_is_code(&ev, EV_KEY, KEY_VOLUMEUP)) {
struct mpd_status *status = mpd_run_status(client);
int volume = mpd_status_get_volume(status);
volume += 5;
if (volume > 100) {
volume = 100;
}
mpd_run_set_volume(client, volume);
printf("set-volume %d\n", volume);
} else if (libevdev_event_is_code(&ev, EV_KEY, KEY_VOLUMEDOWN)) {
struct mpd_status *status = mpd_run_status(client);
int volume = mpd_status_get_volume(status);
volume -= 5;
if (volume < 0) {
volume = 0;
}
mpd_run_set_volume(client, volume);
printf("set-volume %d\n", volume);
} else {
printf("Event: %s %s %d\n",
libevdev_event_type_get_name(ev.type),
libevdev_event_code_get_name(ev.type, ev.code),
ev.value);
}
}
}
while (rc == LIBEVDEV_READ_STATUS_SUCCESS ||
rc == LIBEVDEV_READ_STATUS_SYNC ||
rc == -EAGAIN);
printf("rc: %d\n", rc);
if (client != NULL) {
mpd_connection_free(client);
}
return EXIT_SUCCESS;
}
static int consider_device(const char* devpath, internal_state_t* state)
{
int fd = -1;
struct libevdev* evdev = NULL;
if (!is_character_device(devpath))
{
goto mismatch;
}
if ((fd = open(devpath, O_RDWR)) < 0)
{
perror("open");
fprintf(stderr, "Unable to open device %s for inspection", devpath);
goto mismatch;
}
if (libevdev_new_from_fd(fd, &evdev) < 0)
{
fprintf(stderr, "Note: device %s is not supported by libevdev\n", devpath);
goto mismatch;
}
if (!is_multitouch_device(evdev))
{
goto mismatch;
}
int score = 10000;
if (libevdev_has_event_code(evdev, EV_ABS, ABS_MT_TOOL_TYPE))
{
int tool_min = libevdev_get_abs_minimum(evdev, ABS_MT_TOOL_TYPE);
int tool_max = libevdev_get_abs_maximum(evdev, ABS_MT_TOOL_TYPE);
if (tool_min > MT_TOOL_FINGER || tool_max < MT_TOOL_FINGER)
{
fprintf(stderr, "Note: device %s is a touch device, but doesn't"
" support fingers\n", devpath);
goto mismatch;
}
score -= tool_max - MT_TOOL_FINGER;
}
if (libevdev_has_event_code(evdev, EV_ABS, ABS_MT_SLOT))
{
score += 1000;
// Some devices, e.g. Blackberry PRIV (STV100) have more than one surface
// you can touch. On the PRIV, the keypad also acts as a touch screen
// that you can swipe and scroll with. The only differences between the
// touch devices are that one is named "touch_display" and the other
// "touch_keypad", the keypad only supports 3 contacts and the display
// up to 9, and the keypad has a much lower resolution. Therefore
// increasing the score by the number of contacts should be a relatively
// safe bet, though we may also want to decrease the score by, say, 1,
// if the device name contains "key" just in case they decide to start
// supporting more contacts on both touch surfaces in the future.
int num_slots = libevdev_get_abs_maximum(evdev, ABS_MT_SLOT);
score += num_slots;
}
// For Blackberry devices, see above.
const char* name = libevdev_get_name(evdev);
if (strstr(name, "key") != NULL)
{
score -= 1;
}
// Alcatel OneTouch Idol 3 has an `input_mt_wrapper` device in addition
// to direct input. It seems to be related to accessibility, as it shows
// a touchpoint that you can move around, and then tap to activate whatever
// is under the point. That wrapper device lacks the direct property.
if (libevdev_has_property(evdev, INPUT_PROP_DIRECT))
{
score += 10000;
}
// Some devices may have an additional screen. For example, Meizu Pro7 Plus
// has a small screen on the back side of the device called sub_touch, while
// the boring screen in the front is called main_touch. The resolution on
// the sub_touch device is much much lower. It seems like a safe bet
// to always prefer the larger device, as long as the score adjustment is
// likely to be lower than the adjustment we do for INPUT_PROP_DIRECT.
if (libevdev_has_event_code(evdev, EV_ABS, ABS_MT_POSITION_X))
{
int x = libevdev_get_abs_maximum(evdev, ABS_MT_POSITION_X);
int y = libevdev_get_abs_maximum(evdev, ABS_MT_POSITION_Y);
score += sqrt(x * y);
}
if (state->evdev != NULL)
{
if (state->score >= score)
{
fprintf(stderr, "Note: device %s was outscored by %s (%d >= %d)\n",
devpath, state->path, state->score, score);
goto mismatch;
}
else
{
fprintf(stderr, "Note: device %s was outscored by %s (%d >= %d)\n",
state->path, devpath, score, state->score);
}
}
libevdev_free(state->evdev);
state->fd = fd;
state->score = score;
strncpy(state->path, devpath, sizeof(state->path));
state->evdev = evdev;
return 1;
mismatch:
libevdev_free(evdev);
if (fd >= 0)
{
close(fd);
}
return 0;
}
