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#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <pwd.h>
#include <X11/Xlib.h>
#define BUFFSIZE 256
#define XPOSITIONFILE "/.xmousepos"
char *
gethomepath(char *dest, size_t size)
{
/*
* copy home path into dest with maximum length size
* get home path from $HOME first, if that is fails
* use the user database
*/
char *home;
home = getenv("HOME");
if (home)
strncpy(dest, home, size);
if (home == NULL || dest == NULL) /* last ditch attempt */
{
uid_t uid;
struct passwd *pw;
uid = getuid();
pw = getpwuid(uid);
if (pw == NULL)
return NULL;
strncpy(dest, pw->pw_dir, size);
}
return dest;
}
int
main(int argc, char *argv[])
{
char *path;
Display *display;
/* attempt to get path before anything */
path = malloc(BUFFSIZE);
gethomepath(path, BUFFSIZE);
if (path == NULL)
{
goto freeandexit;
}
strncat(path, XPOSITIONFILE, BUFFSIZE);
puts(path);
/* open display */
display = XOpenDisplay(NULL);
if (display == NULL)
fprintf(stderr, "cannot open x display\n");
freeandexit:
XCloseDisplay(display);
free(path);
return 0;
}
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