int _XConnectDisplay (
char *display_name,
char **fullnamep, /* RETURN */
int *dpynump, /* RETURN */
int *screenp, /* RETURN */
char **auth_namep, /* RETURN */
int *auth_namelenp, /* RETURN */
char **auth_datap, /* RETURN */
int *auth_datalenp) /* RETURN */
{
XtransConnInfo trans_conn;
trans_conn = _X11TransConnectDisplay (
display_name, fullnamep, dpynump, screenp,
auth_namep, auth_namelenp, auth_datap, auth_datalenp);
if (trans_conn)
{
int fd = _X11TransGetConnectionNumber (trans_conn);
_X11TransFreeConnInfo (trans_conn);
return (fd);
}
else
return (-1);
}
static Boolean
display_exists_p (int number)
{
char buf[64];
void *conn;
char *fullname = NULL;
int idisplay, iscreen;
char *conn_auth_name, *conn_auth_data;
int conn_auth_namelen, conn_auth_datalen;
#ifdef USE_XTRANS_INTERNALS
extern void *_X11TransConnectDisplay ();
extern void _XDisconnectDisplay ();
#endif
/* Since connecting to the display waits for a few seconds if the
display doesn't exist, check for trivial non-existence - if the
socket in /tmp exists or not.. (note: if the socket exists, the
server may still not, so we need to try to connect in that case..) */
sprintf (buf, "/tmp/.X11-unix/X%d", number);
if (access (buf, F_OK) != 0)
return FALSE;
#ifdef USE_XTRANS_INTERNALS
/* This is a private function that we shouldn't really be calling,
but it's the best way to see if the server exists (without
needing to hold the necessary authentication to use it) */
sprintf (buf, ":%d", number);
conn = _X11TransConnectDisplay (buf, &fullname, &idisplay, &iscreen,
&conn_auth_name, &conn_auth_namelen,
&conn_auth_data, &conn_auth_datalen);
if (conn == NULL)
return FALSE;
_XDisconnectDisplay (conn);
#endif
return TRUE;
}
