1 files changed, 331 insertions, 327 deletions
diff --git a/xorg-server/Xext/xace.c b/xorg-server/Xext/xace.c
index 28c51687c..ef69fe363 100644
--- a/xorg-server/Xext/xace.c
+++ b/xorg-server/Xext/xace.c
@@ -1,327 +1,331 @@
-/************************************************************
-
-Author: Eamon Walsh <ewalsh@tycho.nsa.gov>
-
-Permission to use, copy, modify, distribute, and sell this software and its
-documentation for any purpose is hereby granted without fee, provided that
-this permission notice appear in supporting documentation.  This permission
-notice 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 NONINFRINGEMENT.  IN NO EVENT SHALL THE
-AUTHOR 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.
-
-********************************************************/
-
-#ifdef HAVE_DIX_CONFIG_H
-#include <dix-config.h>
-#endif
-
-#include <stdarg.h>
-#include "scrnintstr.h"
-#include "extnsionst.h"
-#include "pixmapstr.h"
-#include "regionstr.h"
-#include "gcstruct.h"
-#include "xacestr.h"
-
-#define XSERV_t
-#define TRANS_SERVER
-#include <X11/Xtrans/Xtrans.h>
-#include "../os/osdep.h"
-
-_X_EXPORT CallbackListPtr XaceHooks[XACE_NUM_HOOKS] = {0};
-
-/* Special-cased hook functions.  Called by Xserver.
- */
-int XaceHookDispatch(ClientPtr client, int major)
-{
-    /* Call the audit begin callback, there is no return value. */
-    XaceAuditRec rec = { client, 0 };
-    CallCallbacks(&XaceHooks[XACE_AUDIT_BEGIN], &rec);
-
-    if (major < 128) {
-	/* Call the core dispatch hook */
-	XaceCoreDispatchRec rec = { client, Success /* default allow */ };
-	CallCallbacks(&XaceHooks[XACE_CORE_DISPATCH], &rec);
-	return rec.status;
-    } else {
-	/* Call the extension dispatch hook */
-	ExtensionEntry *ext = GetExtensionEntry(major);
-	XaceExtAccessRec rec = { client, ext, DixUseAccess, Success };
-	if (ext)
-	    CallCallbacks(&XaceHooks[XACE_EXT_DISPATCH], &rec);
-	/* On error, pretend extension doesn't exist */
-	return (rec.status == Success) ? Success : BadRequest;
-    }
-}
-
-int XaceHookPropertyAccess(ClientPtr client, WindowPtr pWin,
-			   PropertyPtr *ppProp, Mask access_mode)
-{
-    XacePropertyAccessRec rec = { client, pWin, ppProp, access_mode, Success };
-    CallCallbacks(&XaceHooks[XACE_PROPERTY_ACCESS], &rec);
-    return rec.status;
-}
-
-int XaceHookSelectionAccess(ClientPtr client,
-			    Selection **ppSel, Mask access_mode)
-{
-    XaceSelectionAccessRec rec = { client, ppSel, access_mode, Success };
-    CallCallbacks(&XaceHooks[XACE_SELECTION_ACCESS], &rec);
-    return rec.status;
-}
-
-void XaceHookAuditEnd(ClientPtr ptr, int result)
-{
-    XaceAuditRec rec = { ptr, result };
-    /* call callbacks, there is no return value. */
-    CallCallbacks(&XaceHooks[XACE_AUDIT_END], &rec);
-}
-
-/* Entry point for hook functions.  Called by Xserver.
- */
-int XaceHook(int hook, ...)
-{
-    union {
-	XaceResourceAccessRec res;
-	XaceDeviceAccessRec dev;
-	XaceSendAccessRec send;
-	XaceReceiveAccessRec recv;
-	XaceClientAccessRec client;
-	XaceExtAccessRec ext;
-	XaceServerAccessRec server;
-	XaceScreenAccessRec screen;
-	XaceAuthAvailRec auth;
-	XaceKeyAvailRec key;
-    } u;
-    int *prv = NULL;	/* points to return value from callback */
-    va_list ap;		/* argument list */
-    va_start(ap, hook);
-
-    /* Marshal arguments for passing to callback.
-     * Each callback has its own case, which sets up a structure to hold
-     * the arguments and integer return parameter, or in some cases just
-     * sets calldata directly to a single argument (with no return result)
-     */
-    switch (hook)
-    {
-	case XACE_RESOURCE_ACCESS:
-	    u.res.client = va_arg(ap, ClientPtr);
-	    u.res.id = va_arg(ap, XID);
-	    u.res.rtype = va_arg(ap, RESTYPE);
-	    u.res.res = va_arg(ap, pointer);
-	    u.res.ptype = va_arg(ap, RESTYPE);
-	    u.res.parent = va_arg(ap, pointer);
-	    u.res.access_mode = va_arg(ap, Mask);
-	    u.res.status = Success; /* default allow */
-	    prv = &u.res.status;
-	    break;
-	case XACE_DEVICE_ACCESS:
-	    u.dev.client = va_arg(ap, ClientPtr);
-	    u.dev.dev = va_arg(ap, DeviceIntPtr);
-	    u.dev.access_mode = va_arg(ap, Mask);
-	    u.dev.status = Success; /* default allow */
-	    prv = &u.dev.status;
-	    break;
-	case XACE_SEND_ACCESS:
-	    u.send.client = va_arg(ap, ClientPtr);
-	    u.send.dev = va_arg(ap, DeviceIntPtr);
-	    u.send.pWin = va_arg(ap, WindowPtr);
-	    u.send.events = va_arg(ap, xEventPtr);
-	    u.send.count = va_arg(ap, int);
-	    u.send.status = Success; /* default allow */
-	    prv = &u.send.status;
-	    break;
-	case XACE_RECEIVE_ACCESS:
-	    u.recv.client = va_arg(ap, ClientPtr);
-	    u.recv.pWin = va_arg(ap, WindowPtr);
-	    u.recv.events = va_arg(ap, xEventPtr);
-	    u.recv.count = va_arg(ap, int);
-	    u.recv.status = Success; /* default allow */
-	    prv = &u.recv.status;
-	    break;
-	case XACE_CLIENT_ACCESS:
-	    u.client.client = va_arg(ap, ClientPtr);
-	    u.client.target = va_arg(ap, ClientPtr);
-	    u.client.access_mode = va_arg(ap, Mask);
-	    u.client.status = Success; /* default allow */
-	    prv = &u.client.status;
-	    break;
-	case XACE_EXT_ACCESS:
-	    u.ext.client = va_arg(ap, ClientPtr);
-	    u.ext.ext = va_arg(ap, ExtensionEntry*);
-	    u.ext.access_mode = DixGetAttrAccess;
-	    u.ext.status = Success; /* default allow */
-	    prv = &u.ext.status;
-	    break;
-	case XACE_SERVER_ACCESS:
-	    u.server.client = va_arg(ap, ClientPtr);
-	    u.server.access_mode = va_arg(ap, Mask);
-	    u.server.status = Success; /* default allow */
-	    prv = &u.server.status;
-	    break;
-	case XACE_SCREEN_ACCESS:
-	case XACE_SCREENSAVER_ACCESS:
-	    u.screen.client = va_arg(ap, ClientPtr);
-	    u.screen.screen = va_arg(ap, ScreenPtr);
-	    u.screen.access_mode = va_arg(ap, Mask);
-	    u.screen.status = Success; /* default allow */
-	    prv = &u.screen.status;
-	    break;
-	case XACE_AUTH_AVAIL:
-	    u.auth.client = va_arg(ap, ClientPtr);
-	    u.auth.authId = va_arg(ap, XID);
-	    break;
-	case XACE_KEY_AVAIL:
-	    u.key.event = va_arg(ap, xEventPtr);
-	    u.key.keybd = va_arg(ap, DeviceIntPtr);
-	    u.key.count = va_arg(ap, int);
-	    break;
-	default:
-	    va_end(ap);
-	    return 0;	/* unimplemented hook number */
-    }
-    va_end(ap);
- 
-    /* call callbacks and return result, if any. */
-    CallCallbacks(&XaceHooks[hook], &u);
-    return prv ? *prv : Success;
-}
-
-/* XaceCensorImage
- *
- * Called after pScreen->GetImage to prevent pieces or trusted windows from
- * being returned in image data from an untrusted window.
- *
- * Arguments:
- *	client is the client doing the GetImage.
- *      pVisibleRegion is the visible region of the window.
- *	widthBytesLine is the width in bytes of one horizontal line in pBuf.
- *	pDraw is the source window.
- *	x, y, w, h is the rectangle of image data from pDraw in pBuf.
- *	format is the format of the image data in pBuf: ZPixmap or XYPixmap.
- *	pBuf is the image data.
- *
- * Returns: nothing.
- *
- * Side Effects:
- *	Any part of the rectangle (x, y, w, h) that is outside the visible
- *	region of the window will be destroyed (overwritten) in pBuf.
- */
-void
-XaceCensorImage(
-	ClientPtr client,
-	RegionPtr pVisibleRegion,
-	long widthBytesLine,
-	DrawablePtr pDraw,
-	int x, int y, int w, int h,
-	unsigned int format,
-	char *pBuf)
-{
-    RegionRec imageRegion;  /* region representing x,y,w,h */
-    RegionRec censorRegion; /* region to obliterate */
-    BoxRec imageBox;
-    int nRects;
-
-    imageBox.x1 = x;
-    imageBox.y1 = y;
-    imageBox.x2 = x + w;
-    imageBox.y2 = y + h;
-    RegionInit(&imageRegion, &imageBox, 1);
-    RegionNull(&censorRegion);
-
-    /* censorRegion = imageRegion - visibleRegion */
-    RegionSubtract(&censorRegion, &imageRegion, pVisibleRegion);
-    nRects = RegionNumRects(&censorRegion);
-    if (nRects > 0)
-    { /* we have something to censor */
-	GCPtr pScratchGC = NULL;
-	PixmapPtr pPix = NULL;
-	xRectangle *pRects = NULL;
-	Bool failed = FALSE;
-	int depth = 1;
-	int bitsPerPixel = 1;
-	int i;
-	BoxPtr pBox;
-
-	/* convert region to list-of-rectangles for PolyFillRect */
-
-	pRects = malloc(nRects * sizeof(xRectangle));
-	if (!pRects)
-	{
-	    failed = TRUE;
-	    goto failSafe;
-	}
-	for (pBox = RegionRects(&censorRegion), i = 0;
-	     i < nRects;
-	     i++, pBox++)
-	{
-	    pRects[i].x = pBox->x1;
-	    pRects[i].y = pBox->y1 - imageBox.y1;
-	    pRects[i].width  = pBox->x2 - pBox->x1;
-	    pRects[i].height = pBox->y2 - pBox->y1;
-	}
-
-	/* use pBuf as a fake pixmap */
-
-	if (format == ZPixmap)
-	{
-	    depth = pDraw->depth;
-	    bitsPerPixel = pDraw->bitsPerPixel;
-	}
-
-	pPix = GetScratchPixmapHeader(pDraw->pScreen, w, h,
-		    depth, bitsPerPixel,
-		    widthBytesLine, (pointer)pBuf);
-	if (!pPix)
-	{
-	    failed = TRUE;
-	    goto failSafe;
-	}
-
-	pScratchGC = GetScratchGC(depth, pPix->drawable.pScreen);
-	if (!pScratchGC)
-	{
-	    failed = TRUE;
-	    goto failSafe;
-	}
-
-	ValidateGC(&pPix->drawable, pScratchGC);
-	(* pScratchGC->ops->PolyFillRect)(&pPix->drawable,
-			    pScratchGC, nRects, pRects);
-
-    failSafe:
-	if (failed)
-	{
-	    /* Censoring was not completed above.  To be safe, wipe out
-	     * all the image data so that nothing trusted gets out.
-	     */
-	    memset(pBuf, 0, (int)(widthBytesLine * h));
-	}
-	free(pRects);
-	if (pScratchGC) FreeScratchGC(pScratchGC);
-	if (pPix)       FreeScratchPixmapHeader(pPix);
-    }
-    RegionUninit(&imageRegion);
-    RegionUninit(&censorRegion);
-} /* XaceCensorImage */
-
-/*
- * Xtrans wrappers for use by modules
- */
-int XaceGetConnectionNumber(ClientPtr client)
-{
-    XtransConnInfo ci = ((OsCommPtr)client->osPrivate)->trans_conn;
-    return _XSERVTransGetConnectionNumber(ci);
-}
-
-int XaceIsLocal(ClientPtr client)
-{
-    XtransConnInfo ci = ((OsCommPtr)client->osPrivate)->trans_conn;
-    return _XSERVTransIsLocal(ci);
-}
+/************************************************************
+
+Author: Eamon Walsh <ewalsh@tycho.nsa.gov>
+
+Permission to use, copy, modify, distribute, and sell this software and its
+documentation for any purpose is hereby granted without fee, provided that
+this permission notice appear in supporting documentation.  This permission
+notice 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 NONINFRINGEMENT.  IN NO EVENT SHALL THE
+AUTHOR 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.
+
+********************************************************/
+
+#ifdef HAVE_DIX_CONFIG_H
+#include <dix-config.h>
+#endif
+
+#include <stdarg.h>
+#include "scrnintstr.h"
+#include "extnsionst.h"
+#include "pixmapstr.h"
+#include "regionstr.h"
+#include "gcstruct.h"
+#include "xacestr.h"
+
+#define XSERV_t
+#define TRANS_SERVER
+#include <X11/Xtrans/Xtrans.h>
+#include "../os/osdep.h"
+
+_X_EXPORT CallbackListPtr XaceHooks[XACE_NUM_HOOKS] = {0};
+
+/* Special-cased hook functions.  Called by Xserver.
+ */
+int XaceHookDispatch(ClientPtr client, int major)
+{
+    /* Call the audit begin callback, there is no return value. */
+    XaceAuditRec rec = { client, 0 };
+    CallCallbacks(&XaceHooks[XACE_AUDIT_BEGIN], &rec);
+
+    if (major < 128) {
+	/* Call the core dispatch hook */
+	XaceCoreDispatchRec rec = { client, Success /* default allow */ };
+	CallCallbacks(&XaceHooks[XACE_CORE_DISPATCH], &rec);
+	return rec.status;
+    } else {
+	/* Call the extension dispatch hook */
+	ExtensionEntry *ext = GetExtensionEntry(major);
+	XaceExtAccessRec rec = { client, ext, DixUseAccess, Success };
+	if (ext)
+	    CallCallbacks(&XaceHooks[XACE_EXT_DISPATCH], &rec);
+	/* On error, pretend extension doesn't exist */
+	return (rec.status == Success) ? Success : BadRequest;
+    }
+}
+
+int XaceHookPropertyAccess(ClientPtr client, WindowPtr pWin,
+			   PropertyPtr *ppProp, Mask access_mode)
+{
+    XacePropertyAccessRec rec = { client, pWin, ppProp, access_mode, Success };
+    CallCallbacks(&XaceHooks[XACE_PROPERTY_ACCESS], &rec);
+    return rec.status;
+}
+
+int XaceHookSelectionAccess(ClientPtr client,
+			    Selection **ppSel, Mask access_mode)
+{
+    XaceSelectionAccessRec rec = { client, ppSel, access_mode, Success };
+    CallCallbacks(&XaceHooks[XACE_SELECTION_ACCESS], &rec);
+    return rec.status;
+}
+
+void XaceHookAuditEnd(ClientPtr ptr, int result)
+{
+    XaceAuditRec rec = { ptr, result };
+    /* call callbacks, there is no return value. */
+    CallCallbacks(&XaceHooks[XACE_AUDIT_END], &rec);
+}
+
+/* Entry point for hook functions.  Called by Xserver.
+ */
+int XaceHook(int hook, ...)
+{
+    union {
+	XaceResourceAccessRec res;
+	XaceDeviceAccessRec dev;
+	XaceSendAccessRec send;
+	XaceReceiveAccessRec recv;
+	XaceClientAccessRec client;
+	XaceExtAccessRec ext;
+	XaceServerAccessRec server;
+	XaceScreenAccessRec screen;
+	XaceAuthAvailRec auth;
+	XaceKeyAvailRec key;
+    } u;
+    int *prv = NULL;	/* points to return value from callback */
+    va_list ap;		/* argument list */
+
+    if (!XaceHooks[hook])
+	return Success;
+
+    va_start(ap, hook);
+
+    /* Marshal arguments for passing to callback.
+     * Each callback has its own case, which sets up a structure to hold
+     * the arguments and integer return parameter, or in some cases just
+     * sets calldata directly to a single argument (with no return result)
+     */
+    switch (hook)
+    {
+	case XACE_RESOURCE_ACCESS:
+	    u.res.client = va_arg(ap, ClientPtr);
+	    u.res.id = va_arg(ap, XID);
+	    u.res.rtype = va_arg(ap, RESTYPE);
+	    u.res.res = va_arg(ap, pointer);
+	    u.res.ptype = va_arg(ap, RESTYPE);
+	    u.res.parent = va_arg(ap, pointer);
+	    u.res.access_mode = va_arg(ap, Mask);
+	    u.res.status = Success; /* default allow */
+	    prv = &u.res.status;
+	    break;
+	case XACE_DEVICE_ACCESS:
+	    u.dev.client = va_arg(ap, ClientPtr);
+	    u.dev.dev = va_arg(ap, DeviceIntPtr);
+	    u.dev.access_mode = va_arg(ap, Mask);
+	    u.dev.status = Success; /* default allow */
+	    prv = &u.dev.status;
+	    break;
+	case XACE_SEND_ACCESS:
+	    u.send.client = va_arg(ap, ClientPtr);
+	    u.send.dev = va_arg(ap, DeviceIntPtr);
+	    u.send.pWin = va_arg(ap, WindowPtr);
+	    u.send.events = va_arg(ap, xEventPtr);
+	    u.send.count = va_arg(ap, int);
+	    u.send.status = Success; /* default allow */
+	    prv = &u.send.status;
+	    break;
+	case XACE_RECEIVE_ACCESS:
+	    u.recv.client = va_arg(ap, ClientPtr);
+	    u.recv.pWin = va_arg(ap, WindowPtr);
+	    u.recv.events = va_arg(ap, xEventPtr);
+	    u.recv.count = va_arg(ap, int);
+	    u.recv.status = Success; /* default allow */
+	    prv = &u.recv.status;
+	    break;
+	case XACE_CLIENT_ACCESS:
+	    u.client.client = va_arg(ap, ClientPtr);
+	    u.client.target = va_arg(ap, ClientPtr);
+	    u.client.access_mode = va_arg(ap, Mask);
+	    u.client.status = Success; /* default allow */
+	    prv = &u.client.status;
+	    break;
+	case XACE_EXT_ACCESS:
+	    u.ext.client = va_arg(ap, ClientPtr);
+	    u.ext.ext = va_arg(ap, ExtensionEntry*);
+	    u.ext.access_mode = DixGetAttrAccess;
+	    u.ext.status = Success; /* default allow */
+	    prv = &u.ext.status;
+	    break;
+	case XACE_SERVER_ACCESS:
+	    u.server.client = va_arg(ap, ClientPtr);
+	    u.server.access_mode = va_arg(ap, Mask);
+	    u.server.status = Success; /* default allow */
+	    prv = &u.server.status;
+	    break;
+	case XACE_SCREEN_ACCESS:
+	case XACE_SCREENSAVER_ACCESS:
+	    u.screen.client = va_arg(ap, ClientPtr);
+	    u.screen.screen = va_arg(ap, ScreenPtr);
+	    u.screen.access_mode = va_arg(ap, Mask);
+	    u.screen.status = Success; /* default allow */
+	    prv = &u.screen.status;
+	    break;
+	case XACE_AUTH_AVAIL:
+	    u.auth.client = va_arg(ap, ClientPtr);
+	    u.auth.authId = va_arg(ap, XID);
+	    break;
+	case XACE_KEY_AVAIL:
+	    u.key.event = va_arg(ap, xEventPtr);
+	    u.key.keybd = va_arg(ap, DeviceIntPtr);
+	    u.key.count = va_arg(ap, int);
+	    break;
+	default:
+	    va_end(ap);
+	    return 0;	/* unimplemented hook number */
+    }
+    va_end(ap);
+ 
+    /* call callbacks and return result, if any. */
+    CallCallbacks(&XaceHooks[hook], &u);
+    return prv ? *prv : Success;
+}
+
+/* XaceCensorImage
+ *
+ * Called after pScreen->GetImage to prevent pieces or trusted windows from
+ * being returned in image data from an untrusted window.
+ *
+ * Arguments:
+ *	client is the client doing the GetImage.
+ *      pVisibleRegion is the visible region of the window.
+ *	widthBytesLine is the width in bytes of one horizontal line in pBuf.
+ *	pDraw is the source window.
+ *	x, y, w, h is the rectangle of image data from pDraw in pBuf.
+ *	format is the format of the image data in pBuf: ZPixmap or XYPixmap.
+ *	pBuf is the image data.
+ *
+ * Returns: nothing.
+ *
+ * Side Effects:
+ *	Any part of the rectangle (x, y, w, h) that is outside the visible
+ *	region of the window will be destroyed (overwritten) in pBuf.
+ */
+void
+XaceCensorImage(
+	ClientPtr client,
+	RegionPtr pVisibleRegion,
+	long widthBytesLine,
+	DrawablePtr pDraw,
+	int x, int y, int w, int h,
+	unsigned int format,
+	char *pBuf)
+{
+    RegionRec imageRegion;  /* region representing x,y,w,h */
+    RegionRec censorRegion; /* region to obliterate */
+    BoxRec imageBox;
+    int nRects;
+
+    imageBox.x1 = x;
+    imageBox.y1 = y;
+    imageBox.x2 = x + w;
+    imageBox.y2 = y + h;
+    RegionInit(&imageRegion, &imageBox, 1);
+    RegionNull(&censorRegion);
+
+    /* censorRegion = imageRegion - visibleRegion */
+    RegionSubtract(&censorRegion, &imageRegion, pVisibleRegion);
+    nRects = RegionNumRects(&censorRegion);
+    if (nRects > 0)
+    { /* we have something to censor */
+	GCPtr pScratchGC = NULL;
+	PixmapPtr pPix = NULL;
+	xRectangle *pRects = NULL;
+	Bool failed = FALSE;
+	int depth = 1;
+	int bitsPerPixel = 1;
+	int i;
+	BoxPtr pBox;
+
+	/* convert region to list-of-rectangles for PolyFillRect */
+
+	pRects = malloc(nRects * sizeof(xRectangle));
+	if (!pRects)
+	{
+	    failed = TRUE;
+	    goto failSafe;
+	}
+	for (pBox = RegionRects(&censorRegion), i = 0;
+	     i < nRects;
+	     i++, pBox++)
+	{
+	    pRects[i].x = pBox->x1;
+	    pRects[i].y = pBox->y1 - imageBox.y1;
+	    pRects[i].width  = pBox->x2 - pBox->x1;
+	    pRects[i].height = pBox->y2 - pBox->y1;
+	}
+
+	/* use pBuf as a fake pixmap */
+
+	if (format == ZPixmap)
+	{
+	    depth = pDraw->depth;
+	    bitsPerPixel = pDraw->bitsPerPixel;
+	}
+
+	pPix = GetScratchPixmapHeader(pDraw->pScreen, w, h,
+		    depth, bitsPerPixel,
+		    widthBytesLine, (pointer)pBuf);
+	if (!pPix)
+	{
+	    failed = TRUE;
+	    goto failSafe;
+	}
+
+	pScratchGC = GetScratchGC(depth, pPix->drawable.pScreen);
+	if (!pScratchGC)
+	{
+	    failed = TRUE;
+	    goto failSafe;
+	}
+
+	ValidateGC(&pPix->drawable, pScratchGC);
+	(* pScratchGC->ops->PolyFillRect)(&pPix->drawable,
+			    pScratchGC, nRects, pRects);
+
+    failSafe:
+	if (failed)
+	{
+	    /* Censoring was not completed above.  To be safe, wipe out
+	     * all the image data so that nothing trusted gets out.
+	     */
+	    memset(pBuf, 0, (int)(widthBytesLine * h));
+	}
+	free(pRects);
+	if (pScratchGC) FreeScratchGC(pScratchGC);
+	if (pPix)       FreeScratchPixmapHeader(pPix);
+    }
+    RegionUninit(&imageRegion);
+    RegionUninit(&censorRegion);
+} /* XaceCensorImage */
+
+/*
+ * Xtrans wrappers for use by modules
+ */
+int XaceGetConnectionNumber(ClientPtr client)
+{
+    XtransConnInfo ci = ((OsCommPtr)client->osPrivate)->trans_conn;
+    return _XSERVTransGetConnectionNumber(ci);
+}
+
+int XaceIsLocal(ClientPtr client)
+{
+    XtransConnInfo ci = ((OsCommPtr)client->osPrivate)->trans_conn;
+    return _XSERVTransIsLocal(ci);
+}