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// SPDX-License-Identifier: MIT
/*
* Copyright © 2013 Red Hat, Inc.
*/
#include "config.h"
#include <assert.h>
#include <errno.h>
#include <fcntl.h>
#include <linux/input.h>
#include <stdio.h>
#include <string.h>
#include <sys/stat.h>
#include <sys/types.h>
#include "libevdev/libevdev.h"
static void
print_abs_bits(struct libevdev *dev, int axis)
{
const struct input_absinfo *abs;
if (!libevdev_has_event_code(dev, EV_ABS, axis))
return;
abs = libevdev_get_abs_info(dev, axis);
printf(" Value %6d\n", abs->value);
printf(" Min %6d\n", abs->minimum);
printf(" Max %6d\n", abs->maximum);
if (abs->fuzz)
printf(" Fuzz %6d\n", abs->fuzz);
if (abs->flat)
printf(" Flat %6d\n", abs->flat);
if (abs->resolution)
printf(" Resolution %6d\n", abs->resolution);
}
static void
print_code_bits(struct libevdev *dev, unsigned int type, unsigned int max)
{
unsigned int i;
for (i = 0; i <= max; i++) {
if (!libevdev_has_event_code(dev, type, i))
continue;
printf(" Event code %i (%s)\n", i, libevdev_event_code_get_name(type, i));
if (type == EV_ABS)
print_abs_bits(dev, i);
}
}
static void
print_bits(struct libevdev *dev)
{
unsigned int i;
printf("Supported events:\n");
for (i = 0; i <= EV_MAX; i++) {
if (libevdev_has_event_type(dev, i))
printf(" Event type %d (%s)\n", i, libevdev_event_type_get_name(i));
switch(i) {
case EV_KEY:
print_code_bits(dev, EV_KEY, KEY_MAX);
break;
case EV_REL:
print_code_bits(dev, EV_REL, REL_MAX);
break;
case EV_ABS:
print_code_bits(dev, EV_ABS, ABS_MAX);
break;
case EV_LED:
print_code_bits(dev, EV_LED, LED_MAX);
break;
}
}
}
static void
print_props(struct libevdev *dev)
{
unsigned int i;
printf("Properties:\n");
for (i = 0; i <= INPUT_PROP_MAX; i++) {
if (libevdev_has_property(dev, i))
printf(" Property type %d (%s)\n", i,
libevdev_property_get_name(i));
}
}
static int
print_event(struct input_event *ev)
{
if (ev->type == EV_SYN)
printf("Event: time %ld.%06ld, ++++++++++++++++++++ %s +++++++++++++++\n",
ev->input_event_sec,
ev->input_event_usec,
libevdev_event_type_get_name(ev->type));
else
printf("Event: time %ld.%06ld, type %d (%s), code %d (%s), value %d\n",
ev->input_event_sec,
ev->input_event_usec,
ev->type,
libevdev_event_type_get_name(ev->type),
ev->code,
libevdev_event_code_get_name(ev->type, ev->code),
ev->value);
return 0;
}
static int
print_sync_event(struct input_event *ev)
{
printf("SYNC: ");
print_event(ev);
return 0;
}
int
main(int argc, char **argv)
{
struct libevdev *dev = NULL;
const char *file;
int fd;
int rc = 1;
if (argc < 2)
goto out;
file = argv[1];
fd = open(file, O_RDONLY);
if (fd < 0) {
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;
}
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));
printf("Evdev version: %x\n", libevdev_get_driver_version(dev));
printf("Input device name: \"%s\"\n", libevdev_get_name(dev));
printf("Phys location: %s\n", libevdev_get_phys(dev));
printf("Uniq identifier: %s\n", libevdev_get_uniq(dev));
print_bits(dev);
print_props(dev);
do {
struct input_event ev;
rc = libevdev_next_event(dev, LIBEVDEV_READ_FLAG_NORMAL|LIBEVDEV_READ_FLAG_BLOCKING, &ev);
if (rc == LIBEVDEV_READ_STATUS_SYNC) {
printf("::::::::::::::::::::: dropped ::::::::::::::::::::::\n");
while (rc == LIBEVDEV_READ_STATUS_SYNC) {
print_sync_event(&ev);
rc = libevdev_next_event(dev, LIBEVDEV_READ_FLAG_SYNC, &ev);
}
printf("::::::::::::::::::::: re-synced ::::::::::::::::::::::\n");
} else if (rc == LIBEVDEV_READ_STATUS_SUCCESS)
print_event(&ev);
} while (rc == LIBEVDEV_READ_STATUS_SYNC || rc == LIBEVDEV_READ_STATUS_SUCCESS || rc == -EAGAIN);
if (rc != LIBEVDEV_READ_STATUS_SUCCESS && rc != -EAGAIN)
fprintf(stderr, "Failed to handle events: %s\n", strerror(-rc));
rc = 0;
out:
libevdev_free(dev);
return rc;
}
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