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/*
* Copyright © 2008 Red Hat, Inc.
*
* Permission to use, copy, modify, distribute, and sell this software
* and its documentation for any purpose is hereby granted without
* fee, provided that the above copyright notice appear in all copies
* and that both that copyright notice and this permission notice
* appear in supporting documentation, and that the name of Red Hat
* not be used in advertising or publicity pertaining to distribution
* of the software without specific, written prior permission. Red
* Hat makes no representations about the suitability of this software
* for any purpose. It is provided "as is" without express or implied
* warranty.
*
* THE AUTHORS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
* INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN
* NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY SPECIAL, INDIRECT OR
* CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS
* OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT,
* NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
* CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*
* Authors:
* Peter Hutterer (peter.hutterer@redhat.com)
*/
#include <stdio.h>
#include <string.h>
#include <errno.h>
#include <fcntl.h>
#include <signal.h>
#include <unistd.h>
#include <linux/input.h>
#include <linux/uinput.h>
#include <dlfcn.h>
#include "fakedev.h"
/* "public interfaces" */
void send_event(int fd, int type, int code, int value)
{
struct input_event event;
event.type = type;
event.code = code;
event.value = value;
gettimeofday(&event.time, NULL);
if (write(fd, &event, sizeof(event)) < sizeof(event))
perror("Send event failed.");
}
void move(int fd, int x, int y)
{
if (!x && !y)
return;
send_event(fd, EV_REL, REL_X, x);
send_event(fd, EV_REL, REL_Y, y);
send_event(fd, EV_SYN, SYN_REPORT, 0);
}
void absmove(int fd, int x, int y)
{
send_event(fd, EV_ABS, ABS_X, x);
send_event(fd, EV_ABS, ABS_Y, y);
send_event(fd, EV_SYN, SYN_REPORT, 0);
}
void click(int fd, int btn, int down)
{
send_event(fd, EV_KEY, btn, down);
send_event(fd, EV_SYN, SYN_REPORT, 0);
}
/* end public interfaces */
static int fd = -1;
static int stop = 0;
static void sighandler(int signum)
{
printf("Stopping.\n");
stop = 1;
}
static void init_signal(void)
{
struct sigaction action;
sigset_t mask;
sigfillset(&mask);
action.sa_handler = sighandler;
action.sa_mask = mask;
action.sa_flags = 0;
sigaction(SIGTERM, &action, NULL);
sigaction(SIGINT, &action, NULL);
sigprocmask(SIG_UNBLOCK, &mask, 0);
}
static int init_uinput(struct test_device* test_dev)
{
struct uinput_user_dev dev;
fd = open("/dev/input/uinput", O_RDWR);
if (fd < 0)
goto error;
memset(&dev, 0, sizeof(dev));
strcpy(dev.name, test_dev->name);
dev.id.bustype = 0;
dev.id.vendor = 0x1F;
dev.id.product = 0x1F;
dev.id.version = 0;
test_dev->setup(&dev, fd);
if (write(fd, &dev, sizeof(dev)) < sizeof(dev))
goto error;
if (ioctl(fd, UI_DEV_CREATE, NULL) == -1) goto error;
return 0;
error:
fprintf(stderr, "Error: %s\n", strerror(errno));
if (fd != -1)
close(fd);
return -1;
}
static void cleanup_uinput(void)
{
if (fd == -1)
return;
ioctl(fd, UI_DEV_DESTROY, NULL);
close(fd);
fd = -1;
}
int main (int argc, char **argv)
{
struct test_device *dev;
void *dlhandle = NULL;
struct test_device* (*get_device)(void);
if (argc <= 1)
{
fprintf(stderr, "Usage: %s test_dev\n", argv[0]);
return -1;
}
printf("Loading %s.\n", argv[1]);
dlhandle = dlopen(argv[1], RTLD_NOW | RTLD_GLOBAL);
if (!dlhandle)
{
fprintf(stderr, "Error: %s\n", dlerror());
return -1;
}
*(void**)(&get_device) = dlsym(dlhandle, "get_device");
if (!get_device)
{
fprintf(stderr, "Error getting the symbol: %s.\n", dlerror());
return -1;
}
dev = (*get_device)();
if (init_uinput(dev) < 0) {
fprintf(stderr, "Failed to initialize /dev/uinput. Exiting.\n");
return -1;
}
init_signal();
printf("Device created. Press CTRL+C to terminate.\n");
while (!stop) {
if (dev->run(fd))
break;
}
cleanup_uinput();
return 0;
}
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