0,0 → 1,172 |
/* |
* Copyright (c) 2012 Intel Corporation. All Rights Reserved. |
* |
* Permission is hereby granted, free of charge, to any person obtaining a |
* copy of this software and associated documentation files (the |
* "Software"), to deal in the Software without restriction, including |
* without limitation the rights to use, copy, modify, merge, publish, |
* distribute, sub license, and/or sell copies of the Software, and to |
* permit persons to whom the Software is furnished to do so, subject to |
* the following conditions: |
* |
* The above copyright notice and this permission notice (including the |
* next paragraph) shall be included in all copies or substantial portions |
* of the Software. |
* |
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS |
* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF |
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. |
* IN NO EVENT SHALL PRECISION INSIGHT AND/OR ITS SUPPLIERS BE LIABLE FOR |
* ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, |
* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE |
* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. |
*/ |
|
#define _GNU_SOURCE 1 |
#include "sysdeps.h" |
#include <dlfcn.h> |
#include <X11/Xlib.h> |
#include "va_drm_auth_x11.h" |
|
#define LIBVA_MAJOR_VERSION 1 |
|
typedef struct drm_auth_x11 DRMAuthX11; |
typedef struct drm_auth_x11_vtable DRMAuthX11VTable; |
|
typedef void (*VAGenericFunc)(void); |
typedef Display *(*X11OpenDisplayFunc)(const char *display_name); |
typedef int (*X11CloseDisplayFunc)(Display *display); |
typedef Bool (*VADRI2QueryExtensionFunc)( |
Display *display, int *event_base, int *error_base); |
typedef Bool (*VADRI2QueryVersionFunc)( |
Display *display, int *major, int *minor); |
typedef Bool (*VADRI2AuthenticateFunc)( |
Display *display, XID window, uint32_t magic); |
|
struct drm_auth_x11_vtable { |
X11OpenDisplayFunc x11_open_display; |
X11CloseDisplayFunc x11_close_display; |
VADRI2QueryExtensionFunc va_dri2_query_extension; |
VADRI2QueryVersionFunc va_dri2_query_version; |
VADRI2AuthenticateFunc va_dri2_authenticate; |
}; |
|
struct drm_auth_x11 { |
void *handle; /* libva-x11.so.1 */ |
DRMAuthX11VTable vtable; |
Display *display; |
Window window; |
}; |
|
static bool |
get_symbol(void *handle, void *func_vptr, const char *name) |
{ |
VAGenericFunc func, *func_ptr = func_vptr; |
const char *error; |
|
dlerror(); |
func = (VAGenericFunc)dlsym(handle, name); |
error = dlerror(); |
|
if (error) { |
fprintf(stderr, "error: failed to resolve %s() function: %s\n", |
name, error); |
return false; |
} |
|
*func_ptr = func; |
return true; |
} |
|
static bool |
drm_auth_x11_init(DRMAuthX11 *auth) |
{ |
struct drm_auth_x11_vtable *vtable; |
char libva_x11_name[16]; |
int ret; |
|
ret = snprintf( |
libva_x11_name, sizeof(libva_x11_name), |
"libva-x11.so.%d", LIBVA_MAJOR_VERSION |
); |
if (ret < 0 || ret >= sizeof(libva_x11_name)) |
return false; |
|
auth->handle = dlopen(libva_x11_name, RTLD_LAZY | RTLD_GLOBAL); |
if (!auth->handle) { |
perror("open lib"); |
return false; |
} |
|
vtable = &auth->vtable; |
if (!get_symbol(RTLD_DEFAULT, &vtable->x11_open_display, "XOpenDisplay")) |
return false; |
if (!get_symbol(RTLD_DEFAULT, &vtable->x11_close_display, "XCloseDisplay")) |
return false; |
if (!get_symbol(auth->handle, &vtable->va_dri2_query_extension, |
"VA_DRI2QueryExtension")) |
return false; |
if (!get_symbol(auth->handle, &vtable->va_dri2_query_version, |
"VA_DRI2QueryVersion")) |
return false; |
if (!get_symbol(auth->handle, &vtable->va_dri2_authenticate, |
"VA_DRI2Authenticate")) |
return false; |
|
auth->display = vtable->x11_open_display(NULL); |
if (!auth->display) |
return false; |
|
auth->window = DefaultRootWindow(auth->display); |
return true; |
} |
|
static void |
drm_auth_x11_terminate(DRMAuthX11 *auth) |
{ |
if (!auth) |
return; |
|
if (auth->display) { |
auth->vtable.x11_close_display(auth->display); |
auth->display = NULL; |
auth->window = None; |
} |
|
if (auth->handle) { |
dlclose(auth->handle); |
auth->handle = NULL; |
} |
} |
|
static bool |
drm_auth_x11_authenticate(DRMAuthX11 *auth, int fd, uint32_t magic) |
{ |
DRMAuthX11VTable * const vtable = &auth->vtable; |
int evt_base, err_base, v_major, v_minor; |
|
if (!vtable->va_dri2_query_extension(auth->display, &evt_base, &err_base)) |
return false; |
if (!vtable->va_dri2_query_version(auth->display, &v_major, &v_minor)) |
return false; |
if (!vtable->va_dri2_authenticate(auth->display, auth->window, magic)) |
return false; |
return true; |
} |
|
/* Try to authenticate the DRM connection with the supplied magic through X11 */ |
bool |
va_drm_authenticate_x11(int fd, uint32_t magic) |
{ |
DRMAuthX11 auth; |
bool success = false; |
|
memset(&auth, 0, sizeof(auth)); |
if (!drm_auth_x11_init(&auth)) |
goto end; |
success = drm_auth_x11_authenticate(&auth, fd, magic); |
|
end: |
drm_auth_x11_terminate(&auth); |
return success; |
} |