summaryrefslogtreecommitdiff
path: root/src/glx/x11
diff options
context:
space:
mode:
authorBrian Paul <brian.paul@tungstengraphics.com>2008-11-10 14:27:42 -0700
committerBrian Paul <brian.paul@tungstengraphics.com>2008-11-10 14:27:42 -0700
commit13f96c5401ffe3869f08fecb2baf5bff2438b02e (patch)
treea7b3e9c73b980cb9cb744d656c918eea69a3f66b /src/glx/x11
parent6186e7a20676c5df30b1b4bffeec87afa1550e25 (diff)
GLX: fix out-of-bounds memory issue in indirect glAreTexturesResident()
See bug 18445. When getting array results, __glXReadReply() always reads a multiple of four bytes. This can cause writing to invalid memory when 'n' is not a multiple of four. Special-case the glAreTexturesResident() functions now. To fix the bug, we use a temporary buffer that's a multiple of four bytes in length. NOTE: this commit also reverts part of commit 919ec22ecf72aa163e1b97d8c7381002131ed32c (glx/x11: Added some #ifdef GLX_DIRECT_RENDERING protection) which directly edited the indirect.c file rather than the python generator! I'm not repairing that issue at this time.
Diffstat (limited to 'src/glx/x11')
-rw-r--r--src/glx/x11/indirect.c154
-rw-r--r--src/glx/x11/single2.c103
2 files changed, 118 insertions, 139 deletions
diff --git a/src/glx/x11/indirect.c b/src/glx/x11/indirect.c
index 3228e2d6fc..1fcd5ca1bb 100644
--- a/src/glx/x11/indirect.c
+++ b/src/glx/x11/indirect.c
@@ -5075,85 +5075,6 @@ __indirect_glPolygonOffset(GLfloat factor, GLfloat units)
}
}
-#define X_GLsop_AreTexturesResident 143
-GLboolean
-__indirect_glAreTexturesResident(GLsizei n, const GLuint * textures,
- GLboolean * residences)
-{
- __GLXcontext *const gc = __glXGetCurrentContext();
- Display *const dpy = gc->currentDpy;
- GLboolean retval = (GLboolean) 0;
-#ifndef USE_XCB
- const GLuint cmdlen = 4 + __GLX_PAD((n * 4));
-#endif
- if (n < 0) {
- __glXSetError(gc, GL_INVALID_VALUE);
- return 0;
- }
- if (__builtin_expect((n >= 0) && (dpy != NULL), 1)) {
-#ifdef USE_XCB
- xcb_connection_t *c = XGetXCBConnection(dpy);
- (void) __glXFlushRenderBuffer(gc, gc->pc);
- xcb_glx_are_textures_resident_reply_t *reply =
- xcb_glx_are_textures_resident_reply(c,
- xcb_glx_are_textures_resident
- (c, gc->currentContextTag, n,
- textures), NULL);
- (void) memcpy(residences, xcb_glx_are_textures_resident_data(reply),
- xcb_glx_are_textures_resident_data_length(reply) *
- sizeof(GLboolean));
- retval = reply->ret_val;
- free(reply);
-#else
- GLubyte const *pc =
- __glXSetupSingleRequest(gc, X_GLsop_AreTexturesResident, cmdlen);
- (void) memcpy((void *) (pc + 0), (void *) (&n), 4);
- (void) memcpy((void *) (pc + 4), (void *) (textures), (n * 4));
- retval = (GLboolean) __glXReadReply(dpy, 1, residences, GL_TRUE);
- UnlockDisplay(dpy);
- SyncHandle();
-#endif /* USE_XCB */
- }
- return retval;
-}
-
-#define X_GLvop_AreTexturesResidentEXT 11
-GLboolean
-glAreTexturesResidentEXT(GLsizei n, const GLuint * textures,
- GLboolean * residences)
-{
- __GLXcontext *const gc = __glXGetCurrentContext();
-
-#ifdef GLX_DIRECT_RENDERING
- if (gc->driContext) {
- return CALL_AreTexturesResident(GET_DISPATCH(),
- (n, textures, residences));
- } else
-#endif
- {
- __GLXcontext *const gc = __glXGetCurrentContext();
- Display *const dpy = gc->currentDpy;
- GLboolean retval = (GLboolean) 0;
- const GLuint cmdlen = 4 + __GLX_PAD((n * 4));
- if (n < 0) {
- __glXSetError(gc, GL_INVALID_VALUE);
- return 0;
- }
- if (__builtin_expect((n >= 0) && (dpy != NULL), 1)) {
- GLubyte const *pc =
- __glXSetupVendorRequest(gc, X_GLXVendorPrivateWithReply,
- X_GLvop_AreTexturesResidentEXT,
- cmdlen);
- (void) memcpy((void *) (pc + 0), (void *) (&n), 4);
- (void) memcpy((void *) (pc + 4), (void *) (textures), (n * 4));
- retval = (GLboolean) __glXReadReply(dpy, 1, residences, GL_TRUE);
- UnlockDisplay(dpy);
- SyncHandle();
- }
- return retval;
- }
-}
-
#define X_GLrop_CopyTexImage1D 4119
void
__indirect_glCopyTexImage1D(GLenum target, GLint level, GLenum internalformat,
@@ -5277,12 +5198,9 @@ glDeleteTexturesEXT(GLsizei n, const GLuint * textures)
{
__GLXcontext *const gc = __glXGetCurrentContext();
-#ifdef GLX_DIRECT_RENDERING
if (gc->driContext) {
CALL_DeleteTextures(GET_DISPATCH(), (n, textures));
- } else
-#endif
- {
+ } else {
__GLXcontext *const gc = __glXGetCurrentContext();
Display *const dpy = gc->currentDpy;
const GLuint cmdlen = 4 + __GLX_PAD((n * 4));
@@ -5348,12 +5266,9 @@ glGenTexturesEXT(GLsizei n, GLuint * textures)
{
__GLXcontext *const gc = __glXGetCurrentContext();
-#ifdef GLX_DIRECT_RENDERING
if (gc->driContext) {
CALL_GenTextures(GET_DISPATCH(), (n, textures));
- } else
-#endif
- {
+ } else {
__GLXcontext *const gc = __glXGetCurrentContext();
Display *const dpy = gc->currentDpy;
const GLuint cmdlen = 4;
@@ -5413,12 +5328,9 @@ glIsTextureEXT(GLuint texture)
{
__GLXcontext *const gc = __glXGetCurrentContext();
-#ifdef GLX_DIRECT_RENDERING
if (gc->driContext) {
return CALL_IsTexture(GET_DISPATCH(), (texture));
- } else
-#endif
- {
+ } else {
__GLXcontext *const gc = __glXGetCurrentContext();
Display *const dpy = gc->currentDpy;
GLboolean retval = (GLboolean) 0;
@@ -5730,12 +5642,9 @@ glGetColorTableEXT(GLenum target, GLenum format, GLenum type, GLvoid * table)
{
__GLXcontext *const gc = __glXGetCurrentContext();
-#ifdef GLX_DIRECT_RENDERING
if (gc->driContext) {
CALL_GetColorTable(GET_DISPATCH(), (target, format, type, table));
- } else
-#endif
- {
+ } else {
__GLXcontext *const gc = __glXGetCurrentContext();
const __GLXattribute *const state = gc->client_state_private;
Display *const dpy = gc->currentDpy;
@@ -5806,13 +5715,10 @@ glGetColorTableParameterfvEXT(GLenum target, GLenum pname, GLfloat * params)
{
__GLXcontext *const gc = __glXGetCurrentContext();
-#ifdef GLX_DIRECT_RENDERING
if (gc->driContext) {
CALL_GetColorTableParameterfv(GET_DISPATCH(),
(target, pname, params));
- } else
-#endif
- {
+ } else {
__GLXcontext *const gc = __glXGetCurrentContext();
Display *const dpy = gc->currentDpy;
const GLuint cmdlen = 8;
@@ -5879,13 +5785,10 @@ glGetColorTableParameterivEXT(GLenum target, GLenum pname, GLint * params)
{
__GLXcontext *const gc = __glXGetCurrentContext();
-#ifdef GLX_DIRECT_RENDERING
if (gc->driContext) {
CALL_GetColorTableParameteriv(GET_DISPATCH(),
(target, pname, params));
- } else
-#endif
- {
+ } else {
__GLXcontext *const gc = __glXGetCurrentContext();
Display *const dpy = gc->currentDpy;
const GLuint cmdlen = 8;
@@ -6205,13 +6108,10 @@ gl_dispatch_stub_356(GLenum target, GLenum format, GLenum type,
{
__GLXcontext *const gc = __glXGetCurrentContext();
-#ifdef GLX_DIRECT_RENDERING
if (gc->driContext) {
CALL_GetConvolutionFilter(GET_DISPATCH(),
(target, format, type, image));
- } else
-#endif
- {
+ } else {
__GLXcontext *const gc = __glXGetCurrentContext();
const __GLXattribute *const state = gc->client_state_private;
Display *const dpy = gc->currentDpy;
@@ -6283,13 +6183,10 @@ gl_dispatch_stub_357(GLenum target, GLenum pname, GLfloat * params)
{
__GLXcontext *const gc = __glXGetCurrentContext();
-#ifdef GLX_DIRECT_RENDERING
if (gc->driContext) {
CALL_GetConvolutionParameterfv(GET_DISPATCH(),
(target, pname, params));
- } else
-#endif
- {
+ } else {
__GLXcontext *const gc = __glXGetCurrentContext();
Display *const dpy = gc->currentDpy;
const GLuint cmdlen = 8;
@@ -6356,13 +6253,10 @@ gl_dispatch_stub_358(GLenum target, GLenum pname, GLint * params)
{
__GLXcontext *const gc = __glXGetCurrentContext();
-#ifdef GLX_DIRECT_RENDERING
if (gc->driContext) {
CALL_GetConvolutionParameteriv(GET_DISPATCH(),
(target, pname, params));
- } else
-#endif
- {
+ } else {
__GLXcontext *const gc = __glXGetCurrentContext();
Display *const dpy = gc->currentDpy;
const GLuint cmdlen = 8;
@@ -6436,13 +6330,10 @@ gl_dispatch_stub_361(GLenum target, GLboolean reset, GLenum format,
{
__GLXcontext *const gc = __glXGetCurrentContext();
-#ifdef GLX_DIRECT_RENDERING
if (gc->driContext) {
CALL_GetHistogram(GET_DISPATCH(),
(target, reset, format, type, values));
- } else
-#endif
- {
+ } else {
__GLXcontext *const gc = __glXGetCurrentContext();
const __GLXattribute *const state = gc->client_state_private;
Display *const dpy = gc->currentDpy;
@@ -6513,12 +6404,9 @@ gl_dispatch_stub_362(GLenum target, GLenum pname, GLfloat * params)
{
__GLXcontext *const gc = __glXGetCurrentContext();
-#ifdef GLX_DIRECT_RENDERING
if (gc->driContext) {
CALL_GetHistogramParameterfv(GET_DISPATCH(), (target, pname, params));
- } else
-#endif
- {
+ } else {
__GLXcontext *const gc = __glXGetCurrentContext();
Display *const dpy = gc->currentDpy;
const GLuint cmdlen = 8;
@@ -6584,12 +6472,9 @@ gl_dispatch_stub_363(GLenum target, GLenum pname, GLint * params)
{
__GLXcontext *const gc = __glXGetCurrentContext();
-#ifdef GLX_DIRECT_RENDERING
if (gc->driContext) {
CALL_GetHistogramParameteriv(GET_DISPATCH(), (target, pname, params));
- } else
-#endif
- {
+ } else {
__GLXcontext *const gc = __glXGetCurrentContext();
Display *const dpy = gc->currentDpy;
const GLuint cmdlen = 8;
@@ -6659,12 +6544,9 @@ gl_dispatch_stub_364(GLenum target, GLboolean reset, GLenum format,
{
__GLXcontext *const gc = __glXGetCurrentContext();
-#ifdef GLX_DIRECT_RENDERING
if (gc->driContext) {
CALL_GetMinmax(GET_DISPATCH(), (target, reset, format, type, values));
- } else
-#endif
- {
+ } else {
__GLXcontext *const gc = __glXGetCurrentContext();
const __GLXattribute *const state = gc->client_state_private;
Display *const dpy = gc->currentDpy;
@@ -6733,12 +6615,9 @@ gl_dispatch_stub_365(GLenum target, GLenum pname, GLfloat * params)
{
__GLXcontext *const gc = __glXGetCurrentContext();
-#ifdef GLX_DIRECT_RENDERING
if (gc->driContext) {
CALL_GetMinmaxParameterfv(GET_DISPATCH(), (target, pname, params));
- } else
-#endif
- {
+ } else {
__GLXcontext *const gc = __glXGetCurrentContext();
Display *const dpy = gc->currentDpy;
const GLuint cmdlen = 8;
@@ -6801,12 +6680,9 @@ gl_dispatch_stub_366(GLenum target, GLenum pname, GLint * params)
{
__GLXcontext *const gc = __glXGetCurrentContext();
-#ifdef GLX_DIRECT_RENDERING
if (gc->driContext) {
CALL_GetMinmaxParameteriv(GET_DISPATCH(), (target, pname, params));
- } else
-#endif
- {
+ } else {
__GLXcontext *const gc = __glXGetCurrentContext();
Display *const dpy = gc->currentDpy;
const GLuint cmdlen = 8;
diff --git a/src/glx/x11/single2.c b/src/glx/x11/single2.c
index 9732b6ef04..38fa6a536e 100644
--- a/src/glx/x11/single2.c
+++ b/src/glx/x11/single2.c
@@ -36,6 +36,8 @@
#include "glxextensions.h"
#include "indirect.h"
#include "indirect_vertex_array.h"
+#include "dispatch.h"
+#include "glapi.h"
/* Used for GL_ARB_transpose_matrix */
static void
@@ -863,3 +865,104 @@ __indirect_glGetPointerv(GLenum pname, void **params)
return;
}
}
+
+
+
+/**
+ * This was previously auto-generated, but we need to special-case
+ * how we handle writing into the 'residences' buffer when n%4!=0.
+ */
+#define X_GLsop_AreTexturesResident 143
+GLboolean
+__indirect_glAreTexturesResident(GLsizei n, const GLuint * textures,
+ GLboolean * residences)
+{
+ __GLXcontext *const gc = __glXGetCurrentContext();
+ Display *const dpy = gc->currentDpy;
+ GLboolean retval = (GLboolean) 0;
+ const GLuint cmdlen = 4 + __GLX_PAD((n * 4));
+ if (__builtin_expect((n >= 0) && (dpy != NULL), 1)) {
+#ifdef USE_XCB
+ xcb_connection_t *c = XGetXCBConnection(dpy);
+ (void) __glXFlushRenderBuffer(gc, gc->pc);
+ xcb_glx_are_textures_resident_reply_t *reply =
+ xcb_glx_are_textures_resident_reply(c,
+ xcb_glx_are_textures_resident
+ (c, gc->currentContextTag, n,
+ textures), NULL);
+ (void) memcpy(residences, xcb_glx_are_textures_resident_data(reply),
+ xcb_glx_are_textures_resident_data_length(reply) *
+ sizeof(GLboolean));
+ retval = reply->ret_val;
+ free(reply);
+#else
+ GLubyte const *pc =
+ __glXSetupSingleRequest(gc, X_GLsop_AreTexturesResident, cmdlen);
+ (void) memcpy((void *) (pc + 0), (void *) (&n), 4);
+ (void) memcpy((void *) (pc + 4), (void *) (textures), (n * 4));
+ if (n & 3) {
+ /* n is not a multiple of four.
+ * When reply_is_always_array is TRUE, __glXReadReply() will
+ * put a multiple of four bytes into the dest buffer. If the
+ * caller's buffer is not a multiple of four in size, we'll write
+ * out of bounds. So use a temporary buffer that's a few bytes
+ * larger.
+ */
+ GLboolean *res4 = malloc((n + 3) & ~3);
+ retval = (GLboolean) __glXReadReply(dpy, 1, res4, GL_TRUE);
+ memcpy(residences, res4, n);
+ free(res4);
+ }
+ else {
+ retval = (GLboolean) __glXReadReply(dpy, 1, residences, GL_TRUE);
+ }
+ UnlockDisplay(dpy);
+ SyncHandle();
+#endif /* USE_XCB */
+ }
+ return retval;
+}
+
+
+/**
+ * This was previously auto-generated, but we need to special-case
+ * how we handle writing into the 'residences' buffer when n%4!=0.
+ */
+#define X_GLvop_AreTexturesResidentEXT 11
+GLboolean
+glAreTexturesResidentEXT(GLsizei n, const GLuint * textures,
+ GLboolean * residences)
+{
+ __GLXcontext *const gc = __glXGetCurrentContext();
+
+ if (gc->isDirect) {
+ return CALL_AreTexturesResident(GET_DISPATCH(),
+ (n, textures, residences));
+ } else {
+ __GLXcontext *const gc = __glXGetCurrentContext();
+ Display *const dpy = gc->currentDpy;
+ GLboolean retval = (GLboolean) 0;
+ const GLuint cmdlen = 4 + __GLX_PAD((n * 4));
+ if (__builtin_expect((n >= 0) && (dpy != NULL), 1)) {
+ GLubyte const *pc =
+ __glXSetupVendorRequest(gc, X_GLXVendorPrivateWithReply,
+ X_GLvop_AreTexturesResidentEXT,
+ cmdlen);
+ (void) memcpy((void *) (pc + 0), (void *) (&n), 4);
+ (void) memcpy((void *) (pc + 4), (void *) (textures), (n * 4));
+ if (n & 3) {
+ /* see comments in __indirect_glAreTexturesResident() */
+ GLboolean *res4 = malloc((n + 3) & ~3);
+ retval = (GLboolean) __glXReadReply(dpy, 1, res4, GL_TRUE);
+ memcpy(residences, res4, n);
+ free(res4);
+ }
+ else {
+ retval = (GLboolean) __glXReadReply(dpy, 1, residences, GL_TRUE);
+ }
+ UnlockDisplay(dpy);
+ SyncHandle();
+ }
+ return retval;
+ }
+}