static void init(void)
{
/* Most file systems limit the size of filenames to 255 octets */
char *home_env, game_dir[256];
mode_t mode = S_IRUSR | S_IWUSR | S_IXUSR;
/* Get user HOME environment variable. Fail if we can't trust the
* environment, like if the setuid bit is set on the executable.
*/
if ((home_env = secure_getenv("HOME")) != NULL) {
strlcpy(game_dir, home_env, sizeof game_dir);
} else {
fprintf(stderr, "Environment variable $HOME does not exist, "
"or it is not what you think it is.\n");
exit(EXIT_FAILURE);
}
char *dirs[] = {
"/.local",
"/share",
"/tetris",
NULL,
};
int i;
for (i = 0; dirs[i]; i++) {
strlcat(game_dir, dirs[i], sizeof game_dir);
if (try_mkdir(game_dir, mode) < 0)
goto err_subdir;
}
/* open for writing in append mode ~/.local/share/tetris/logs */
strlcat(game_dir, "/logs", sizeof game_dir);
if (freopen(game_dir, "a", stderr) == NULL) {
fprintf(stderr, "Could not open: %s\n", game_dir);
exit(EXIT_FAILURE);
}
srand(time(NULL));
/* Create game context */
if (blocks_init() > 0) {
printf("Game successfully initialized\n");
printf("Appending logs to file: %s.\n", game_dir);
} else {
printf("Failed to initialize game\n");
exit(EXIT_FAILURE);
}
/* create ncurses display */
screen_init();
return;
err_subdir:
fprintf(stderr, "Unable to create sub directories. Cannot continue\n");
exit(EXIT_FAILURE);
}
int
get_xsockets (int *number, struct x_socket **sockets, int tcp_socket)
{
int dpy;
struct x_socket *s;
int n;
int i;
s = malloc (sizeof(*s) * 5);
if (s == NULL)
errx (1, "malloc: out of memory");
try_mkdir (X_UNIX_PATH);
try_mkdir (X_PIPE_PATH);
for(dpy = 4; dpy < 256; ++dpy) {
char **path;
int tmp = 0;
n = 0;
for (path = x_sockets; *path; ++path) {
tmp = try_socket (&s[n], dpy, *path);
if (tmp == -1) {
if (errno != ENOTDIR && errno != ENOENT)
err(1, "failed to open '%s'", *path);
} else if (tmp == 1) {
while(--n >= 0) {
close (s[n].fd);
free (s[n].pathname);
}
break;
} else if (tmp == 0)
++n;
}
if (tmp == 1)
continue;
#ifdef MAY_HAVE_X11_PIPES
for (path = x_pipes; *path; ++path) {
tmp = try_pipe (&s[n], dpy, *path);
if (tmp == -1) {
if (errno != ENOTDIR && errno != ENOENT && errno != ENOSYS)
err(1, "failed to open '%s'", *path);
} else if (tmp == 1) {
while (--n >= 0) {
close (s[n].fd);
free (s[n].pathname);
}
break;
} else if (tmp == 0)
++n;
}
if (tmp == 1)
continue;
#endif
if (tcp_socket) {
tmp = try_tcp (&s[n], dpy);
if (tmp == -1)
err(1, "failed to open tcp stocket");
else if (tmp == 1) {
while (--n >= 0) {
close (s[n].fd);
free (s[n].pathname);
}
break;
} else if (tmp == 0)
++n;
}
break;
}
if (dpy == 256)
errx (1, "no free x-servers");
for (i = 0; i < n; ++i)
if (s[i].flags & LISTENP
&& listen (s[i].fd, SOMAXCONN) < 0)
err (1, "listen %s", s[i].pathname ? s[i].pathname : "tcp");
*number = n;
*sockets = s;
return dpy;
}
