60 lines
1.7 KiB
C
60 lines
1.7 KiB
C
/*
|
||
* vim:ts=4:sw=4:expandtab
|
||
*
|
||
* i3 - an improved dynamic tiling window manager
|
||
*
|
||
* © 2009-2011 Michael Stapelberg and contributors
|
||
*
|
||
* See file LICENSE for license information.
|
||
*
|
||
*/
|
||
#include <stdio.h>
|
||
#include <string.h>
|
||
#include <stdbool.h>
|
||
#include <limits.h>
|
||
|
||
#include <xcb/xcb.h>
|
||
#include <xcb/xcb_aux.h>
|
||
|
||
/*
|
||
* Try to get the socket path from X11 and return NULL if it doesn’t work.
|
||
*
|
||
* The memory for the socket path is dynamically allocated and has to be
|
||
* free()d by the caller.
|
||
*
|
||
*/
|
||
char *socket_path_from_x11() {
|
||
xcb_connection_t *conn;
|
||
xcb_intern_atom_cookie_t atom_cookie;
|
||
xcb_intern_atom_reply_t *atom_reply;
|
||
int screen;
|
||
char *socket_path;
|
||
|
||
if ((conn = xcb_connect(NULL, &screen)) == NULL ||
|
||
xcb_connection_has_error(conn))
|
||
return NULL;
|
||
|
||
atom_cookie = xcb_intern_atom(conn, 0, strlen("I3_SOCKET_PATH"), "I3_SOCKET_PATH");
|
||
|
||
xcb_screen_t *root_screen = xcb_aux_get_screen(conn, screen);
|
||
xcb_window_t root = root_screen->root;
|
||
|
||
atom_reply = xcb_intern_atom_reply(conn, atom_cookie, NULL);
|
||
if (atom_reply == NULL)
|
||
return NULL;
|
||
|
||
xcb_get_property_cookie_t prop_cookie;
|
||
xcb_get_property_reply_t *prop_reply;
|
||
prop_cookie = xcb_get_property_unchecked(conn, false, root, atom_reply->atom,
|
||
XCB_GET_PROPERTY_TYPE_ANY, 0, PATH_MAX);
|
||
prop_reply = xcb_get_property_reply(conn, prop_cookie, NULL);
|
||
if (prop_reply == NULL || xcb_get_property_value_length(prop_reply) == 0)
|
||
return NULL;
|
||
if (asprintf(&socket_path, "%.*s", xcb_get_property_value_length(prop_reply),
|
||
(char*)xcb_get_property_value(prop_reply)) == -1)
|
||
return NULL;
|
||
xcb_disconnect(conn);
|
||
return socket_path;
|
||
}
|
||
|