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@epitron
Created September 30, 2013 06:46
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#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <fcntl.h>
#include <errno.h>
#include <linux/input.h>
#include <linux/uinput.h>
#define die(str, args...) do { \
perror(str); \
exit(EXIT_FAILURE); \
} while(0)
int
main(void)
{
int fd;
struct uinput_user_dev uidev;
struct input_event ev;
int dx, dy;
int i;
fd = open("/dev/uinput", O_WRONLY | O_NONBLOCK);
if(fd < 0)
die("error: open");
if(ioctl(fd, UI_SET_EVBIT, EV_KEY) < 0)
die("error: ioctl");
if(ioctl(fd, UI_SET_KEYBIT, BTN_LEFT) < 0)
die("error: ioctl");
if(ioctl(fd, UI_SET_EVBIT, EV_REL) < 0)
die("error: ioctl");
if(ioctl(fd, UI_SET_RELBIT, REL_X) < 0)
die("error: ioctl");
if(ioctl(fd, UI_SET_RELBIT, REL_Y) < 0)
die("error: ioctl");
memset(&uidev, 0, sizeof(uidev));
snprintf(uidev.name, UINPUT_MAX_NAME_SIZE, "uinput-sample");
uidev.id.bustype = BUS_USB;
uidev.id.vendor = 0x1;
uidev.id.product = 0x1;
uidev.id.version = 1;
if(write(fd, &uidev, sizeof(uidev)) < 0)
die("error: write");
if(ioctl(fd, UI_DEV_CREATE) < 0)
die("error: ioctl");
sleep(2);
srand(time(NULL));
while(1) {
switch(rand() % 4) {
case 0:
dx = -10;
dy = -1;
break;
case 1:
dx = 10;
dy = 1;
break;
case 2:
dx = -1;
dy = 10;
break;
case 3:
dx = 1;
dy = -10;
break;
}
for(i = 0; i < 20; i++) {
memset(&ev, 0, sizeof(struct input_event));
ev.type = EV_REL;
ev.code = REL_X;
ev.value = dx;
if(write(fd, &ev, sizeof(struct input_event)) < 0)
die("error: write");
memset(&ev, 0, sizeof(struct input_event));
ev.type = EV_REL;
ev.code = REL_Y;
ev.value = dy;
if(write(fd, &ev, sizeof(struct input_event)) < 0)
die("error: write");
memset(&ev, 0, sizeof(struct input_event));
ev.type = EV_SYN;
ev.code = 0;
ev.value = 0;
if(write(fd, &ev, sizeof(struct input_event)) < 0)
die("error: write");
usleep(15000);
}
sleep(5);
}
sleep(2);
if(ioctl(fd, UI_DEV_DESTROY) < 0)
die("error: ioctl");
close(fd);
return 0;
}
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