Re: Xid - Pid establishment
Carsten Haitzler (The Rasterman) <[email protected]>
| Newsgroups | gmane.comp.xfree86.devel |
|---|---|
| Organization | You expect me to be organized? |
| Message-ID | <20050212202059.678d37ba@icky> |
On Sat, 12 Feb 2005 16:17:33 +0530 Kala B <[email protected]> babbled: > Hi, > > I am trying to develop an application, which needs to know the owner ( > process id ) of every window that is being created on the system. As, > setting of _NET_WM_PID is not mandated for applications, is there some > other way through which I could get to know the pid of a window? > > I am only interested in the scenario, when both the xserver and > xclient are on the same machine, so the XServer uses a Unix domain > socket. So, in this case, the XServer would anyway get to know the pid > of the connecting client by using the SO_PEERCRED option. Can the > xserver propagate the pid of the client ? (Probably by adding another > specific property to every window being created?). Would there be any > issues with this approach. > > These are my very very initial thoughts and am also new to X, so > request you all to give me your suggestions. see attached source and Makefile.am - use it as an LD_PRELOAD (i did this a long time ago) and then u guarantee properties on everything you run with the LD_PRELOAD active. > Thanks a lot > Kala > _______________________________________________ > Devel mailing list > [email protected] > http://XFree86.Org/mailman/listinfo/devel > -- ------------- Codito, ergo sum - "I code, therefore I am" -------------- The Rasterman (Carsten Haitzler) [email protected] 裸好多 [email protected] Tokyo, Japan (東京 日本)
e_hack.c
(text/x-csrc, 6.3 KB)
#include "config.h"
#include "e_hack.h"
/* prototypes */
static void __e_hack_set_properties(Display *display, Window window);
/* dlopened xlib so we can find the symbols in the real xlib to call them */
static void *lib_xlib = NULL;
/* the function that actually sets the properties on toplevel window */
static void
__e_hack_set_properties(Display *display, Window window)
{
static Atom a_launch_id = 0;
static Atom a_launch_path = 0;
static Atom a_user_id = 0;
static Atom a_process_id = 0;
static Atom a_p_process_id = 0;
static Atom a_machine_name = 0;
static Atom a_user_name = 0;
char *env = NULL;
if (!a_launch_id) a_launch_id = XInternAtom(display, "_E_HACK_LAUNCH_ID", False);
if (!a_launch_path) a_launch_path = XInternAtom(display, "_E_HACK_LAUNCH_PATH", False);
if (!a_user_id) a_user_id = XInternAtom(display, "_E_HACK_USER_ID", False);
if (!a_process_id) a_process_id = XInternAtom(display, "_E_HACK_PROCESS_ID", False);
if (!a_p_process_id) a_p_process_id = XInternAtom(display, "_E_HACK_PARENT_PROCESS_ID", False);
if (!a_machine_name) a_machine_name = XInternAtom(display, "_E_HACK_MACHINE_NAME", False);
if (!a_user_name) a_user_name = XInternAtom(display, "_E_HACK_USER_NAME", False);
if ((env = getenv("E_HACK_LAUNCH_ID")))
XChangeProperty(display, window, a_launch_id, XA_STRING, 8, PropModeReplace, env, strlen(env));
if ((env = getenv("E_HACK_LAUNCH_PATH")))
XChangeProperty(display, window, a_launch_path, XA_STRING, 8, PropModeReplace, env, strlen(env));
{
uid_t uid;
pid_t pid, ppid;
struct utsname ubuf;
char buf[4096];
uid = getuid();
pid = getpid();
ppid = getppid();
snprintf(buf, sizeof(buf), "%i", uid);
XChangeProperty(display, window, a_user_id, XA_STRING, 8, PropModeReplace, buf, strlen(buf));
snprintf(buf, sizeof(buf), "%i", pid);
XChangeProperty(display, window, a_process_id, XA_STRING, 8, PropModeReplace, buf, strlen(buf));
snprintf(buf, sizeof(buf), "%i", ppid);
XChangeProperty(display, window, a_p_process_id, XA_STRING, 8, PropModeReplace, buf, strlen(buf));
if (!uname(&ubuf))
{
snprintf(buf, sizeof(buf), "%s", ubuf.nodename);
XChangeProperty(display, window, a_machine_name, XA_STRING, 8, PropModeReplace, buf, strlen(buf));
}
else
XChangeProperty(display, window, a_machine_name, XA_STRING, 8, PropModeReplace, " ", 1);
}
if ((env = getenv("USER")))
XChangeProperty(display, window, a_user_name, XA_STRING, 8, PropModeReplace, env, strlen(env));
}
/* XCreateWindow intercept hack */
Window
XCreateWindow(
Display *display,
Window parent,
int x, int y,
unsigned int width, unsigned int height,
unsigned int border_width,
int depth,
unsigned int class,
Visual *visual,
unsigned long valuemask,
XSetWindowAttributes *attributes
)
{
static Window (*func)
(
Display *display,
Window parent,
int x, int y,
unsigned int width, unsigned int height,
unsigned int border_width,
int depth,
unsigned int class,
Visual *visual,
unsigned long valuemask,
XSetWindowAttributes *attributes
) = NULL;
int i;
/* find the real Xlib and the real X function */
if (!lib_xlib) lib_xlib = dlopen("libX11.so", RTLD_GLOBAL | RTLD_LAZY);
if (!func) func = dlsym (lib_xlib, "XCreateWindow");
/* multihead screen handling loop */
for (i = 0; i < ScreenCount(display); i++)
{
/* if the window is created as a toplevel window */
if (parent == RootWindow(display, i))
{
Window window;
/* create it */
window = (*func) (display, parent, x, y, width, height,
border_width, depth, class, visual, valuemask,
attributes);
/* set properties */
__e_hack_set_properties(display, window);
/* return it */
return window;
}
}
/* normal child window - create as usual */
return (*func) (display, parent, x, y, width, height, border_width, depth,
class, visual, valuemask, attributes);
}
/* XCreateSimpleWindow intercept hack */
Window
XCreateSimpleWindow(
Display *display,
Window parent,
int x, int y,
unsigned int width, unsigned int height,
unsigned int border_width,
unsigned long border,
unsigned long background
)
{
static Window (*func)
(
Display *display,
Window parent,
int x, int y,
unsigned int width, unsigned int height,
unsigned int border_width,
unsigned long border,
unsigned long background
) = NULL;
int i;
/* find the real Xlib and the real X function */
if (!lib_xlib) lib_xlib = dlopen("libX11.so", RTLD_GLOBAL | RTLD_LAZY);
if (!func) func = dlsym (lib_xlib, "XCreateSimpleWindow");
/* multihead screen handling loop */
for (i = 0; i < ScreenCount(display); i++)
{
/* if the window is created as a toplevel window */
if (parent == RootWindow(display, i))
{
Window window;
/* create it */
window = (*func) (display, parent, x, y, width, height,
border_width, border, background);
/* set properties */
__e_hack_set_properties(display, window);
/* return it */
return window;
}
}
/* normal child window - create as usual */
return (*func) (display, parent, x, y, width, height,
border_width, border, background);
}
/* XReparentWindow intercept hack */
int
XReparentWindow(
Display *display,
Window window,
Window parent,
int x, int y
)
{
static int (*func)
(
Display *display,
Window window,
Window parent,
int x, int y
) = NULL;
int i;
/* find the real Xlib and the real X function */
if (!lib_xlib) lib_xlib = dlopen("libX11.so", RTLD_GLOBAL | RTLD_LAZY);
if (!func) func = dlsym (lib_xlib, "XReparentWindow");
/* multihead screen handling loop */
for (i = 0; i < ScreenCount(display); i++)
{
/* if the window is created as a toplevel window */
if (parent == RootWindow(display, i))
{
/* set properties */
__e_hack_set_properties(display, window);
/* reparent it */
return (*func) (display, window, parent, x, y);
}
}
/* normal child window reparenting - reparent as usual */
return (*func) (display, window, parent, x, y);
}
e_hack.h
(text/x-chdr, 252 B)
#include <stdio.h> #include <stdlib.h> #include <stdarg.h> #include <string.h> #include <dlfcn.h> #include <unistd.h> #include <sys/types.h> #include <sys/stat.h> #include <sys/utsname.h> #include <X11/Xlib.h> #include <X11/X.h> #include <X11/Xatom.h>
Makefile.am
(application/octet-stream, 604 B) - not displayed