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Replace XC-SECURITY code with XACE security hooks 

(cherry picked from 8526cd6395 commit)
This commit is contained in:
Eamon Walsh 2004-05-05 20:04:52 +00:00 committed by Alan Coopersmith
parent 8d9ccc90a5
commit 37f0ae0245
14 changed files with 133 additions and 185 deletions
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22
dix/devices.c
View File

@ -72,9 +72,8 @@ SOFTWARE.
#ifdef XKB #ifdef XKB
#include <X11/extensions/XKBsrv.h> #include <X11/extensions/XKBsrv.h>
#endif #endif
#ifdef XCSECURITY #ifdef XACE
#define _SECURITY_SERVER #include "xace.h"
#include <X11/extensions/security.h>
#endif #endif
#include "dispatch.h" #include "dispatch.h"
@ -956,8 +955,8 @@ ProcSetModifierMapping(ClientPtr client)
} }
} }
#ifdef XCSECURITY #ifdef XACE
if (!SecurityCheckDeviceAccess(client, keybd, TRUE)) if (!XaceHook(XACE_DEVICE_ACCESS, client, keybd, TRUE))
return BadAccess; return BadAccess;
#endif #endif
@ -1073,9 +1072,8 @@ ProcChangeKeyboardMapping(ClientPtr client)
client->errorValue = stuff->keySymsPerKeyCode; client->errorValue = stuff->keySymsPerKeyCode;
return BadValue; return BadValue;
} }
#ifdef XCSECURITY #ifdef XACE
if (!SecurityCheckDeviceAccess(client, inputInfo.keyboard, if (!XaceHook(XACE_DEVICE_ACCESS, client, inputInfo.keyboard, TRUE))
TRUE))
return BadAccess; return BadAccess;
#endif #endif
keysyms.minKeyCode = stuff->firstKeyCode; keysyms.minKeyCode = stuff->firstKeyCode;
@ -1221,8 +1219,8 @@ ProcChangeKeyboardControl (ClientPtr client)
vmask = stuff->mask; vmask = stuff->mask;
if (client->req_len != (sizeof(xChangeKeyboardControlReq)>>2)+Ones(vmask)) if (client->req_len != (sizeof(xChangeKeyboardControlReq)>>2)+Ones(vmask))
return BadLength; return BadLength;
#ifdef XCSECURITY #ifdef XACE
if (!SecurityCheckDeviceAccess(client, keybd, TRUE)) if (!XaceHook(XACE_DEVICE_ACCESS, client, keybd, TRUE))
return BadAccess; return BadAccess;
#endif #endif
vlist = (XID *)&stuff[1]; /* first word of values */ vlist = (XID *)&stuff[1]; /* first word of values */
@ -1610,8 +1608,8 @@ ProcQueryKeymap(ClientPtr client)
rep.type = X_Reply; rep.type = X_Reply;
rep.sequenceNumber = client->sequence; rep.sequenceNumber = client->sequence;
rep.length = 2; rep.length = 2;
#ifdef XCSECURITY #ifdef XACE
if (!SecurityCheckDeviceAccess(client, inputInfo.keyboard, TRUE)) if (!XaceHook(XACE_DEVICE_ACCESS, client, inputInfo.keyboard, TRUE))
{ {
bzero((char *)&rep.map[0], 32); bzero((char *)&rep.map[0], 32);
} }

41
dix/dispatch.c
View File

@ -107,9 +107,8 @@ int ProcInitialConnection();
#include "panoramiX.h" #include "panoramiX.h"
#include "panoramiXsrv.h" #include "panoramiXsrv.h"
#endif #endif
#ifdef XCSECURITY #ifdef XACE
#define _SECURITY_SERVER #include "xace.h"
#include <X11/extensions/security.h>
#endif #endif
#ifdef XAPPGROUP #ifdef XAPPGROUP
#include <X11/extensions/Xagsrv.h> #include <X11/extensions/Xagsrv.h>
@ -1103,11 +1102,10 @@ ProcConvertSelection(register ClientPtr client)
CurrentSelections[i].selection != stuff->selection) i++; CurrentSelections[i].selection != stuff->selection) i++;
if ((i < NumCurrentSelections) && if ((i < NumCurrentSelections) &&
(CurrentSelections[i].window != None) (CurrentSelections[i].window != None)
#ifdef XCSECURITY #ifdef XACE
&& (!client->CheckAccess || && XaceHook(XACE_RESOURCE_ACCESS, client,
(* client->CheckAccess)(client, CurrentSelections[i].window, CurrentSelections[i].window, RT_WINDOW,
RT_WINDOW, SecurityReadAccess, SecurityReadAccess, CurrentSelections[i].pWin)
CurrentSelections[i].pWin))
#endif #endif
) )
{ {
@ -2205,9 +2203,9 @@ DoGetImage(register ClientPtr client, int format, Drawable drawable,
WriteReplyToClient(client, sizeof (xGetImageReply), &xgi); WriteReplyToClient(client, sizeof (xGetImageReply), &xgi);
} }
#ifdef XCSECURITY #ifdef XACE
if (client->trustLevel != XSecurityClientTrusted && if (pDraw->type == DRAWABLE_WINDOW &&
pDraw->type == DRAWABLE_WINDOW) !XaceHook(XACE_DRAWABLE_ACCESS, client, pDraw))
{ {
pVisibleRegion = NotClippedByChildren((WindowPtr)pDraw); pVisibleRegion = NotClippedByChildren((WindowPtr)pDraw);
if (pVisibleRegion) if (pVisibleRegion)
@ -2235,9 +2233,9 @@ DoGetImage(register ClientPtr client, int format, Drawable drawable,
format, format,
planemask, planemask,
(pointer) pBuf); (pointer) pBuf);
#ifdef XCSECURITY #ifdef XACE
if (pVisibleRegion) if (pVisibleRegion)
SecurityCensorImage(client, pVisibleRegion, widthBytesLine, XaceCensorImage(client, pVisibleRegion, widthBytesLine,
pDraw, x, y + linesDone, width, pDraw, x, y + linesDone, width,
nlines, format, pBuf); nlines, format, pBuf);
#endif #endif
@ -2276,9 +2274,9 @@ DoGetImage(register ClientPtr client, int format, Drawable drawable,
format, format,
plane, plane,
(pointer)pBuf); (pointer)pBuf);
#ifdef XCSECURITY #ifdef XACE
if (pVisibleRegion) if (pVisibleRegion)
SecurityCensorImage(client, pVisibleRegion, XaceCensorImage(client, pVisibleRegion,
widthBytesLine, widthBytesLine,
pDraw, x, y + linesDone, width, pDraw, x, y + linesDone, width,
nlines, format, pBuf); nlines, format, pBuf);
@ -2304,7 +2302,7 @@ DoGetImage(register ClientPtr client, int format, Drawable drawable,
} }
} }
} }
#ifdef XCSECURITY #ifdef XACE
if (pVisibleRegion) if (pVisibleRegion)
REGION_DESTROY(pDraw->pScreen, pVisibleRegion); REGION_DESTROY(pDraw->pScreen, pVisibleRegion);
#endif #endif
@ -3278,11 +3276,10 @@ ProcListHosts(register ClientPtr client)
/* REQUEST(xListHostsReq); */ /* REQUEST(xListHostsReq); */
REQUEST_SIZE_MATCH(xListHostsReq); REQUEST_SIZE_MATCH(xListHostsReq);
#ifdef XCSECURITY #ifdef XACE
/* untrusted clients can't list hosts */ /* untrusted clients can't list hosts */
if (client->trustLevel != XSecurityClientTrusted) if (!XaceHook(XACE_HOSTLIST_ACCESS, client, SecurityReadAccess))
{ {
SecurityAudit("client %d attempted to list hosts\n", client->index);
return BadAccess; return BadAccess;
} }
#endif #endif
@ -3650,10 +3647,8 @@ void InitClient(ClientPtr client, int i, pointer ospriv)
} }
#endif #endif
client->replyBytesRemaining = 0; client->replyBytesRemaining = 0;
#ifdef XCSECURITY #ifdef XACE
client->trustLevel = XSecurityClientTrusted; XACE_STATE_INIT(client->securityState);
client->CheckAccess = NULL;
client->authId = 0;
#endif #endif
#ifdef XAPPGROUP #ifdef XAPPGROUP
client->appgroup = NULL; client->appgroup = NULL;

36
dix/dixutils.c
View File

@ -97,9 +97,8 @@ Author: Adobe Systems Incorporated
#include "scrnintstr.h" #include "scrnintstr.h"
#define XK_LATIN1 #define XK_LATIN1
#include <X11/keysymdef.h> #include <X11/keysymdef.h>
#ifdef XCSECURITY #ifdef XACE
#define _SECURITY_SERVER #include "xace.h"
#include <X11/extensions/security.h>
#endif #endif
/* /*
@ -199,7 +198,7 @@ CompareISOLatin1Lowered(unsigned char *s1, int s1len,
return (int) c1 - (int) c2; return (int) c1 - (int) c2;
} }
#ifdef XCSECURITY #ifdef XACE
/* SecurityLookupWindow and SecurityLookupDrawable: /* SecurityLookupWindow and SecurityLookupDrawable:
* Look up the window/drawable taking into account the client doing * Look up the window/drawable taking into account the client doing
@ -207,32 +206,16 @@ CompareISOLatin1Lowered(unsigned char *s1, int s1len,
* if it exists and the client is allowed access, else return NULL. * if it exists and the client is allowed access, else return NULL.
* Most Proc* functions should be calling these instead of * Most Proc* functions should be calling these instead of
* LookupWindow and LookupDrawable, which do no access checks. * LookupWindow and LookupDrawable, which do no access checks.
* XACE note: need to see if client->lastDrawableID can still be used here.
*/ */
_X_EXPORT WindowPtr _X_EXPORT WindowPtr
SecurityLookupWindow(XID rid, ClientPtr client, Mask access_mode) SecurityLookupWindow(XID rid, ClientPtr client, Mask access_mode)
{ {
WindowPtr pWin;
client->errorValue = rid; client->errorValue = rid;
if(rid == INVALID) if(rid == INVALID)
return NULL; return NULL;
if (client->trustLevel != XSecurityClientTrusted) return (WindowPtr)SecurityLookupIDByType(client, rid, RT_WINDOW, access_mode);
return (WindowPtr)SecurityLookupIDByType(client, rid, RT_WINDOW, access_mode);
if (client->lastDrawableID == rid)
{
if (client->lastDrawable->type == DRAWABLE_WINDOW)
return ((WindowPtr) client->lastDrawable);
return (WindowPtr) NULL;
}
pWin = (WindowPtr)SecurityLookupIDByType(client, rid, RT_WINDOW, access_mode);
if (pWin && pWin->drawable.type == DRAWABLE_WINDOW) {
client->lastDrawable = (DrawablePtr) pWin;
client->lastDrawableID = rid;
client->lastGCID = INVALID;
client->lastGC = (GCPtr)NULL;
}
return pWin;
} }
@ -243,11 +226,6 @@ SecurityLookupDrawable(XID rid, ClientPtr client, Mask access_mode)
if(rid == INVALID) if(rid == INVALID)
return (pointer) NULL; return (pointer) NULL;
if (client->trustLevel != XSecurityClientTrusted)
return (DrawablePtr)SecurityLookupIDByClass(client, rid, RC_DRAWABLE,
access_mode);
if (client->lastDrawableID == rid)
return ((pointer) client->lastDrawable);
pDraw = (DrawablePtr)SecurityLookupIDByClass(client, rid, RC_DRAWABLE, pDraw = (DrawablePtr)SecurityLookupIDByClass(client, rid, RC_DRAWABLE,
access_mode); access_mode);
if (pDraw && (pDraw->type != UNDRAWABLE_WINDOW)) if (pDraw && (pDraw->type != UNDRAWABLE_WINDOW))
@ -271,7 +249,7 @@ LookupDrawable(XID rid, ClientPtr client)
return SecurityLookupDrawable(rid, client, SecurityUnknownAccess); return SecurityLookupDrawable(rid, client, SecurityUnknownAccess);
} }
#else /* not XCSECURITY */ #else /* not XACE */
WindowPtr WindowPtr
LookupWindow(XID rid, ClientPtr client) LookupWindow(XID rid, ClientPtr client)
@ -313,7 +291,7 @@ LookupDrawable(XID rid, ClientPtr client)
return (pointer)NULL; return (pointer)NULL;
} }
#endif /* XCSECURITY */ #endif /* XACE */
_X_EXPORT ClientPtr _X_EXPORT ClientPtr
LookupClient(XID rid, ClientPtr client) LookupClient(XID rid, ClientPtr client)

25
dix/events.c
View File

@ -138,9 +138,8 @@ of the copyright holder.
extern Bool XkbFilterEvents(ClientPtr, int, xEvent *); extern Bool XkbFilterEvents(ClientPtr, int, xEvent *);
#endif #endif
#ifdef XCSECURITY #ifdef XACE
#define _SECURITY_SERVER #include "xace.h"
#include <X11/extensions/security.h>
#endif #endif
#ifdef XEVIE #ifdef XEVIE
@ -2541,8 +2540,8 @@ CheckPassiveGrabsOnWindow(
(grab->confineTo->realized && (grab->confineTo->realized &&
BorderSizeNotEmpty(grab->confineTo)))) BorderSizeNotEmpty(grab->confineTo))))
{ {
#ifdef XCSECURITY #ifdef XACE
if (!SecurityCheckDeviceAccess(wClient(pWin), device, FALSE)) if (!XaceHook(XACE_DEVICE_ACCESS, wClient(pWin), device, FALSE))
return FALSE; return FALSE;
#endif #endif
#ifdef XKB #ifdef XKB
@ -3350,10 +3349,10 @@ EnterLeaveEvent(
{ {
xKeymapEvent ke; xKeymapEvent ke;
#ifdef XCSECURITY #ifdef XACE
ClientPtr client = grab ? rClient(grab) ClientPtr client = grab ? rClient(grab)
: clients[CLIENT_ID(pWin->drawable.id)]; : clients[CLIENT_ID(pWin->drawable.id)];
if (!SecurityCheckDeviceAccess(client, keybd, FALSE)) if (!XaceHook(XACE_DEVICE_ACCESS, client, keybd, FALSE))
{ {
bzero((char *)&ke.map[0], 31); bzero((char *)&ke.map[0], 31);
} }
@ -3445,9 +3444,9 @@ FocusEvent(DeviceIntPtr dev, int type, int mode, int detail, register WindowPtr
((pWin->eventMask | wOtherEventMasks(pWin)) & KeymapStateMask)) ((pWin->eventMask | wOtherEventMasks(pWin)) & KeymapStateMask))
{ {
xKeymapEvent ke; xKeymapEvent ke;
#ifdef XCSECURITY #ifdef XACE
ClientPtr client = clients[CLIENT_ID(pWin->drawable.id)]; ClientPtr client = clients[CLIENT_ID(pWin->drawable.id)];
if (!SecurityCheckDeviceAccess(client, dev, FALSE)) if (!XaceHook(XACE_DEVICE_ACCESS, client, dev, FALSE))
{ {
bzero((char *)&ke.map[0], 31); bzero((char *)&ke.map[0], 31);
} }
@ -3716,8 +3715,8 @@ ProcSetInputFocus(client)
REQUEST(xSetInputFocusReq); REQUEST(xSetInputFocusReq);
REQUEST_SIZE_MATCH(xSetInputFocusReq); REQUEST_SIZE_MATCH(xSetInputFocusReq);
#ifdef XCSECURITY #ifdef XACE
if (!SecurityCheckDeviceAccess(client, inputInfo.keyboard, TRUE)) if (!XaceHook(XACE_DEVICE_ACCESS, client, inputInfo.keyboard, TRUE))
return Success; return Success;
#endif #endif
return SetInputFocus(client, inputInfo.keyboard, stuff->focus, return SetInputFocus(client, inputInfo.keyboard, stuff->focus,
@ -3981,8 +3980,8 @@ ProcGrabKeyboard(ClientPtr client)
int result; int result;
REQUEST_SIZE_MATCH(xGrabKeyboardReq); REQUEST_SIZE_MATCH(xGrabKeyboardReq);
#ifdef XCSECURITY #ifdef XACE
if (!SecurityCheckDeviceAccess(client, inputInfo.keyboard, TRUE)) if (!XaceHook(XACE_DEVICE_ACCESS, client, inputInfo.keyboard, TRUE))
{ {
result = Success; result = Success;
rep.status = AlreadyGrabbed; rep.status = AlreadyGrabbed;

59
dix/extension.c
View File

@ -61,9 +61,8 @@ SOFTWARE.
#include "gcstruct.h" #include "gcstruct.h"
#include "scrnintstr.h" #include "scrnintstr.h"
#include "dispatch.h" #include "dispatch.h"
#ifdef XCSECURITY #ifdef XACE
#define _SECURITY_SERVER #include "xace.h"
#include <X11/extensions/security.h>
#endif #endif
#define EXTENSION_BASE 128 #define EXTENSION_BASE 128
@ -147,8 +146,8 @@ AddExtension(char *name, int NumEvents, int NumErrors,
ext->errorBase = 0; ext->errorBase = 0;
ext->errorLast = 0; ext->errorLast = 0;
} }
#ifdef XCSECURITY #ifdef XACE
ext->secure = FALSE; XACE_STATE_INIT(ext->securityState);
#endif #endif
return(ext); return(ext);
@ -210,26 +209,27 @@ CheckExtension(const char *extname)
return NULL; return NULL;
} }
/*
* Added as part of Xace.
*/
ExtensionEntry *
GetExtensionEntry(int major)
{
if (major < EXTENSION_BASE)
return NULL;
major -= EXTENSION_BASE;
if (major >= NumExtensions)
return NULL;
return extensions[major];
}
_X_EXPORT void _X_EXPORT void
DeclareExtensionSecurity(char *extname, Bool secure) DeclareExtensionSecurity(char *extname, Bool secure)
{ {
#ifdef XCSECURITY #ifdef XACE
int i = FindExtension(extname, strlen(extname)); int i = FindExtension(extname, strlen(extname));
if (i >= 0) if (i >= 0)
{ XaceHook(XACE_DECLARE_EXT_SECURE, extensions[i], secure);
int majorop = extensions[i]->base;
extensions[i]->secure = secure;
if (secure)
{
UntrustedProcVector[majorop] = ProcVector[majorop];
SwappedUntrustedProcVector[majorop] = SwappedProcVector[majorop];
}
else
{
UntrustedProcVector[majorop] = ProcBadRequest;
SwappedUntrustedProcVector[majorop] = ProcBadRequest;
}
}
#endif #endif
} }
@ -307,10 +307,9 @@ ProcQueryExtension(ClientPtr client)
{ {
i = FindExtension((char *)&stuff[1], stuff->nbytes); i = FindExtension((char *)&stuff[1], stuff->nbytes);
if (i < 0 if (i < 0
#ifdef XCSECURITY #ifdef XACE
/* don't show insecure extensions to untrusted clients */ /* call callbacks to find out whether to show extension */
|| (client->trustLevel == XSecurityClientUntrusted && || !XaceHook(XACE_EXT_ACCESS, client, extensions[i])
!extensions[i]->secure)
#endif #endif
) )
reply.present = xFalse; reply.present = xFalse;
@ -347,10 +346,9 @@ ProcListExtensions(ClientPtr client)
for (i=0; i<NumExtensions; i++) for (i=0; i<NumExtensions; i++)
{ {
#ifdef XCSECURITY #ifdef XACE
/* don't show insecure extensions to untrusted clients */ /* call callbacks to find out whether to show extension */
if (client->trustLevel == XSecurityClientUntrusted && if (!XaceHook(XACE_EXT_ACCESS, client, extensions[i]))
!extensions[i]->secure)
continue; continue;
#endif #endif
total_length += strlen(extensions[i]->name) + 1; total_length += strlen(extensions[i]->name) + 1;
@ -365,9 +363,8 @@ ProcListExtensions(ClientPtr client)
for (i=0; i<NumExtensions; i++) for (i=0; i<NumExtensions; i++)
{ {
int len; int len;
#ifdef XCSECURITY #ifdef XACE
if (client->trustLevel == XSecurityClientUntrusted && if (!XaceHook(XACE_EXT_ACCESS, client, extensions[i]))
!extensions[i]->secure)
continue; continue;
#endif #endif
*bufptr++ = len = strlen(extensions[i]->name); *bufptr++ = len = strlen(extensions[i]->name);

25
dix/property.c
View File

@ -60,9 +60,8 @@ SOFTWARE.
#include "dixstruct.h" #include "dixstruct.h"
#include "dispatch.h" #include "dispatch.h"
#include "swaprep.h" #include "swaprep.h"
#ifdef XCSECURITY #ifdef XACE
#define _SECURITY_SERVER #include "xace.h"
#include <X11/extensions/security.h>
#endif #endif
/***************************************************************** /*****************************************************************
@ -121,12 +120,12 @@ ProcRotateProperties(ClientPtr client)
return(BadAlloc); return(BadAlloc);
for (i = 0; i < stuff->nAtoms; i++) for (i = 0; i < stuff->nAtoms; i++)
{ {
#ifdef XCSECURITY #ifdef XACE
char action = SecurityCheckPropertyAccess(client, pWin, atoms[i], char action = XaceHook(XACE_PROPERTY_ACCESS, client, pWin, atoms[i],
SecurityReadAccess|SecurityWriteAccess); SecurityReadAccess|SecurityWriteAccess);
#endif #endif
if (!ValidAtom(atoms[i]) if (!ValidAtom(atoms[i])
#ifdef XCSECURITY #ifdef XACE
|| (SecurityErrorOperation == action) || (SecurityErrorOperation == action)
#endif #endif
) )
@ -135,7 +134,7 @@ ProcRotateProperties(ClientPtr client)
client->errorValue = atoms[i]; client->errorValue = atoms[i];
return BadAtom; return BadAtom;
} }
#ifdef XCSECURITY #ifdef XACE
if (SecurityIgnoreOperation == action) if (SecurityIgnoreOperation == action)
{ {
DEALLOCATE_LOCAL(props); DEALLOCATE_LOCAL(props);
@ -236,8 +235,8 @@ ProcChangeProperty(ClientPtr client)
return(BadAtom); return(BadAtom);
} }
#ifdef XCSECURITY #ifdef XACE
switch (SecurityCheckPropertyAccess(client, pWin, stuff->property, switch (XaceHook(XACE_PROPERTY_ACCESS, client, pWin, stuff->property,
SecurityWriteAccess)) SecurityWriteAccess))
{ {
case SecurityErrorOperation: case SecurityErrorOperation:
@ -504,13 +503,13 @@ ProcGetProperty(ClientPtr client)
if (!pProp) if (!pProp)
return NullPropertyReply(client, None, 0, &reply); return NullPropertyReply(client, None, 0, &reply);
#ifdef XCSECURITY #ifdef XACE
{ {
Mask access_mode = SecurityReadAccess; Mask access_mode = SecurityReadAccess;
if (stuff->delete) if (stuff->delete)
access_mode |= SecurityDestroyAccess; access_mode |= SecurityDestroyAccess;
switch(SecurityCheckPropertyAccess(client, pWin, stuff->property, switch(XaceHook(XACE_PROPERTY_ACCESS, client, pWin, stuff->property,
access_mode)) access_mode))
{ {
case SecurityErrorOperation: case SecurityErrorOperation:
@ -666,8 +665,8 @@ ProcDeleteProperty(register ClientPtr client)
return (BadAtom); return (BadAtom);
} }
#ifdef XCSECURITY #ifdef XACE
switch(SecurityCheckPropertyAccess(client, pWin, stuff->property, switch(XaceHook(XACE_PROPERTY_ACCESS, client, pWin, stuff->property,
SecurityDestroyAccess)) SecurityDestroyAccess))
{ {
case SecurityErrorOperation: case SecurityErrorOperation:

19
dix/resource.c
View File

@ -123,6 +123,9 @@ Equipment Corporation.
#include "panoramiX.h" #include "panoramiX.h"
#include "panoramiXsrv.h" #include "panoramiXsrv.h"
#endif #endif
#ifdef XACE
#include "xace.h"
#endif
#include <assert.h> #include <assert.h>
static void RebuildTable( static void RebuildTable(
@ -821,7 +824,7 @@ LegalNewID(XID id, register ClientPtr client)
!LookupIDByClass(id, RC_ANY))); !LookupIDByClass(id, RC_ANY)));
} }
#ifdef XCSECURITY #ifdef XACE
/* SecurityLookupIDByType and SecurityLookupIDByClass: /* SecurityLookupIDByType and SecurityLookupIDByClass:
* These are the heart of the resource ID security system. They take * These are the heart of the resource ID security system. They take
@ -854,8 +857,9 @@ SecurityLookupIDByType(ClientPtr client, XID id, RESTYPE rtype, Mask mode)
break; break;
} }
} }
if (retval && client && client->CheckAccess) if (retval && client &&
retval = (* client->CheckAccess)(client, id, rtype, mode, retval); !XaceHook(XACE_RESOURCE_ACCESS, client, id, rtype, mode, retval))
retval = NULL;
return retval; return retval;
} }
@ -883,8 +887,9 @@ SecurityLookupIDByClass(ClientPtr client, XID id, RESTYPE classes, Mask mode)
break; break;
} }
} }
if (retval && client && client->CheckAccess) if (retval && client &&
retval = (* client->CheckAccess)(client, id, res->type, mode, retval); !XaceHook(XACE_RESOURCE_ACCESS, client, id, res->type, mode, retval))
retval = NULL;
return retval; return retval;
} }
@ -906,7 +911,7 @@ LookupIDByClass(XID id, RESTYPE classes)
SecurityUnknownAccess); SecurityUnknownAccess);
} }
#else /* not XCSECURITY */ #else /* not XACE */
/* /*
* LookupIDByType returns the object with the given id and type, else NULL. * LookupIDByType returns the object with the given id and type, else NULL.
@ -951,4 +956,4 @@ LookupIDByClass(XID id, RESTYPE classes)
return (pointer)NULL; return (pointer)NULL;
} }
#endif /* XCSECURITY */ #endif /* XACE */

25
dix/window.c
View File

@ -129,9 +129,8 @@ Equipment Corporation.
#ifdef XAPPGROUP #ifdef XAPPGROUP
#include <X11/extensions/Xagsrv.h> #include <X11/extensions/Xagsrv.h>
#endif #endif
#ifdef XCSECURITY #ifdef XACE
#define _SECURITY_SERVER #include "xace.h"
#include <X11/extensions/security.h>
#endif #endif
/****** /******
@ -726,11 +725,11 @@ CreateWindow(Window wid, register WindowPtr pParent, int x, int y, unsigned w,
} }
pWin->borderWidth = bw; pWin->borderWidth = bw;
#ifdef XCSECURITY #ifdef XACE
/* can't let untrusted clients have background None windows; /* can't let untrusted clients have background None windows;
* they make it too easy to steal window contents * they make it too easy to steal window contents
*/ */
if (client->trustLevel != XSecurityClientTrusted) if (!XaceHook(XACE_BACKGRND_ACCESS, client, pWin))
{ {
pWin->backgroundState = BackgroundPixel; pWin->backgroundState = BackgroundPixel;
pWin->background.pixel = 0; pWin->background.pixel = 0;
@ -1020,9 +1019,9 @@ ChangeWindowAttributes(register WindowPtr pWin, Mask vmask, XID *vlist, ClientPt
borderRelative = TRUE; borderRelative = TRUE;
if (pixID == None) if (pixID == None)
{ {
#ifdef XCSECURITY #ifdef XACE
/* can't let untrusted clients have background None windows */ /* can't let untrusted clients have background None windows */
if (client->trustLevel == XSecurityClientTrusted) if (XaceHook(XACE_BACKGRND_ACCESS, client, pWin))
{ {
#endif #endif
if (pWin->backgroundState == BackgroundPixmap) if (pWin->backgroundState == BackgroundPixmap)
@ -1031,7 +1030,7 @@ ChangeWindowAttributes(register WindowPtr pWin, Mask vmask, XID *vlist, ClientPt
MakeRootTile(pWin); MakeRootTile(pWin);
else else
pWin->backgroundState = None; pWin->backgroundState = None;
#ifdef XCSECURITY #ifdef XACE
} }
else else
{ /* didn't change the background to None, so don't tell ddx */ { /* didn't change the background to None, so don't tell ddx */
@ -2719,13 +2718,9 @@ MapWindow(register WindowPtr pWin, ClientPtr client)
if (pWin->mapped) if (pWin->mapped)
return(Success); return(Success);
#ifdef XCSECURITY #ifdef XACE
/* don't let an untrusted client map a child-of-trusted-window, InputOnly /* general check for permission to map window */
* window; too easy to steal device input if (!XaceHook(XACE_MAP_ACCESS, client, pWin))
*/
if ( (client->trustLevel != XSecurityClientTrusted) &&
(pWin->drawable.class == InputOnly) &&
(wClient(pWin->parent)->trustLevel == XSecurityClientTrusted) )
return Success; return Success;
#endif #endif

19
include/dix.h
View File

@ -89,12 +89,9 @@ SOFTWARE.
((client->lastDrawableID == did) ? \ ((client->lastDrawableID == did) ? \
client->lastDrawable : (DrawablePtr)LookupDrawable(did, client)) client->lastDrawable : (DrawablePtr)LookupDrawable(did, client))
#ifdef XCSECURITY #ifdef XACE
#define SECURITY_VERIFY_DRAWABLE(pDraw, did, client, mode)\ #define SECURITY_VERIFY_DRAWABLE(pDraw, did, client, mode)\
if (client->lastDrawableID == did && !client->trustLevel)\
pDraw = client->lastDrawable;\
else \
{\ {\
pDraw = (DrawablePtr) SecurityLookupIDByClass(client, did, \ pDraw = (DrawablePtr) SecurityLookupIDByClass(client, did, \
RC_DRAWABLE, mode);\ RC_DRAWABLE, mode);\
@ -108,9 +105,6 @@ SOFTWARE.
} }
#define SECURITY_VERIFY_GEOMETRABLE(pDraw, did, client, mode)\ #define SECURITY_VERIFY_GEOMETRABLE(pDraw, did, client, mode)\
if (client->lastDrawableID == did && !client->trustLevel)\
pDraw = client->lastDrawable;\
else \
{\ {\
pDraw = (DrawablePtr) SecurityLookupIDByClass(client, did, \ pDraw = (DrawablePtr) SecurityLookupIDByClass(client, did, \
RC_DRAWABLE, mode);\ RC_DRAWABLE, mode);\
@ -122,9 +116,6 @@ SOFTWARE.
} }
#define SECURITY_VERIFY_GC(pGC, rid, client, mode)\ #define SECURITY_VERIFY_GC(pGC, rid, client, mode)\
if (client->lastGCID == rid && !client->trustLevel)\
pGC = client->lastGC;\
else\
pGC = (GC *) SecurityLookupIDByType(client, rid, RT_GC, mode);\ pGC = (GC *) SecurityLookupIDByType(client, rid, RT_GC, mode);\
if (!pGC)\ if (!pGC)\
{\ {\
@ -141,7 +132,7 @@ SOFTWARE.
#define VERIFY_GC(pGC, rid, client)\ #define VERIFY_GC(pGC, rid, client)\
SECURITY_VERIFY_GC(pGC, rid, client, SecurityUnknownAccess) SECURITY_VERIFY_GC(pGC, rid, client, SecurityUnknownAccess)
#else /* not XCSECURITY */ #else /* not XACE */
#define VERIFY_DRAWABLE(pDraw, did, client)\ #define VERIFY_DRAWABLE(pDraw, did, client)\
if (client->lastDrawableID == did)\ if (client->lastDrawableID == did)\
@ -191,7 +182,7 @@ SOFTWARE.
#define SECURITY_VERIFY_GC(pGC, rid, client, mode)\ #define SECURITY_VERIFY_GC(pGC, rid, client, mode)\
VERIFY_GC(pGC, rid, client) VERIFY_GC(pGC, rid, client)
#endif /* XCSECURITY */ #endif /* XACE */
/* /*
* We think that most hardware implementations of DBE will want * We think that most hardware implementations of DBE will want
@ -386,7 +377,7 @@ extern int CompareISOLatin1Lowered(
unsigned char * /*b*/, unsigned char * /*b*/,
int blen); int blen);
#ifdef XCSECURITY #ifdef XACE
extern WindowPtr SecurityLookupWindow( extern WindowPtr SecurityLookupWindow(
XID /*rid*/, XID /*rid*/,
@ -422,7 +413,7 @@ extern pointer LookupDrawable(
#define SecurityLookupDrawable(rid, client, access_mode) \ #define SecurityLookupDrawable(rid, client, access_mode) \
LookupDrawable(rid, client) LookupDrawable(rid, client)
#endif /* XCSECURITY */ #endif /* XACE */
extern ClientPtr LookupClient( extern ClientPtr LookupClient(
XID /*rid*/, XID /*rid*/,

11
include/dixstruct.h
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@ -130,15 +130,8 @@ typedef struct _Client {
int requestLogIndex; int requestLogIndex;
#endif #endif
unsigned long replyBytesRemaining; unsigned long replyBytesRemaining;
#ifdef XCSECURITY #ifdef XACE
XID authId; pointer securityState[4]; /* 4 slots for use */
unsigned int trustLevel;
pointer (* CheckAccess)(
ClientPtr /*pClient*/,
XID /*id*/,
RESTYPE /*classes*/,
Mask /*access_mode*/,
pointer /*resourceval*/);
#endif #endif
#ifdef XAPPGROUP #ifdef XAPPGROUP
struct _AppGroupRec* appgroup; struct _AppGroupRec* appgroup;

3
include/extnsionst.h
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@ -71,7 +71,7 @@ typedef struct _ExtensionEntry {
unsigned short (* MinorOpcode)( /* called for errors */ unsigned short (* MinorOpcode)( /* called for errors */
ClientPtr /* client */); ClientPtr /* client */);
#ifdef XCSECURITY #ifdef XCSECURITY
Bool secure; /* extension visible to untrusted clients? */ pointer securityState[4]; /* 4 slots for use */
#endif #endif
} ExtensionEntry; } ExtensionEntry;
@ -129,6 +129,7 @@ extern Bool AddExtensionAlias(
ExtensionEntry * /*extension*/); ExtensionEntry * /*extension*/);
extern ExtensionEntry *CheckExtension(const char *extname); extern ExtensionEntry *CheckExtension(const char *extname);
extern ExtensionEntry *GetExtensionEntry(int major);
extern ExtensionLookupProc LookupProc( extern ExtensionLookupProc LookupProc(
char* /*name*/, char* /*name*/,

6
include/resource.h
View File

@ -227,7 +227,7 @@ extern pointer LookupClientResourceComplex(
#define SecurityWriteAccess (1<<1) /* changing the object */ #define SecurityWriteAccess (1<<1) /* changing the object */
#define SecurityDestroyAccess (1<<2) /* destroying the object */ #define SecurityDestroyAccess (1<<2) /* destroying the object */
#ifdef XCSECURITY #ifdef XACE
extern pointer SecurityLookupIDByType( extern pointer SecurityLookupIDByType(
ClientPtr /*client*/, ClientPtr /*client*/,
@ -241,7 +241,7 @@ extern pointer SecurityLookupIDByClass(
RESTYPE /*classes*/, RESTYPE /*classes*/,
Mask /*access_mode*/); Mask /*access_mode*/);
#else /* not XCSECURITY */ #else /* not XACE */
#define SecurityLookupIDByType(client, id, rtype, access_mode) \ #define SecurityLookupIDByType(client, id, rtype, access_mode) \
LookupIDByType(id, rtype) LookupIDByType(id, rtype)
@ -249,7 +249,7 @@ extern pointer SecurityLookupIDByClass(
#define SecurityLookupIDByClass(client, id, classes, access_mode) \ #define SecurityLookupIDByClass(client, id, classes, access_mode) \
LookupIDByClass(id, classes) LookupIDByClass(id, classes)
#endif /* XCSECURITY */ #endif /* XACE */
extern void GetXIDRange( extern void GetXIDRange(
int /*client*/, int /*client*/,

19
os/access.c
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@ -202,9 +202,8 @@ SOFTWARE.
#include "dixstruct.h" #include "dixstruct.h"
#include "osdep.h" #include "osdep.h"
#ifdef XCSECURITY #ifdef XACE
#define _SECURITY_SERVER #include "xace.h"
#include <X11/extensions/security.h>
#endif #endif
#ifndef PATH_MAX #ifndef PATH_MAX
@ -1383,15 +1382,6 @@ _X_EXPORT Bool LocalClient(ClientPtr client)
pointer addr; pointer addr;
register HOST *host; register HOST *host;
#ifdef XCSECURITY
/* untrusted clients can't change host access */
if (client->trustLevel != XSecurityClientTrusted)
{
SecurityAudit("client %d attempted to change host access\n",
client->index);
return FALSE;
}
#endif
if (!_XSERVTransGetPeerAddr (((OsCommPtr)client->osPrivate)->trans_conn, if (!_XSERVTransGetPeerAddr (((OsCommPtr)client->osPrivate)->trans_conn,
&notused, &alen, &from)) &notused, &alen, &from))
{ {
@ -1534,6 +1524,11 @@ AuthorizedClient(ClientPtr client)
{ {
if (!client || defeatAccessControl) if (!client || defeatAccessControl)
return TRUE; return TRUE;
#ifdef XACE
/* untrusted clients can't change host access */
if (!XaceHook(XACE_HOSTLIST_ACCESS, client, SecurityWriteAccess))
return FALSE;
#endif
return LocalClient(client); return LocalClient(client);
} }

8
os/connection.c
View File

@ -150,6 +150,9 @@ extern __const__ int _nfiles;
#ifdef XAPPGROUP #ifdef XAPPGROUP
#include <X11/extensions/Xagsrv.h> #include <X11/extensions/Xagsrv.h>
#endif #endif
#ifdef XACE
#include "xace.h"
#endif
#ifdef XCSECURITY #ifdef XCSECURITY
#define _SECURITY_SERVER #define _SECURITY_SERVER
#include <X11/extensions/security.h> #include <X11/extensions/security.h>
@ -693,9 +696,8 @@ ClientAuthorized(ClientPtr client,
/* indicate to Xdmcp protocol that we've opened new client */ /* indicate to Xdmcp protocol that we've opened new client */
XdmcpOpenDisplay(priv->fd); XdmcpOpenDisplay(priv->fd);
#endif /* XDMCP */ #endif /* XDMCP */
#ifdef XAPPGROUP #ifdef XACE
if (ClientStateCallback) XaceHook(XACE_AUTH_AVAIL, client, auth_id);
XagCallClientStateChange (client);
#endif #endif
/* At this point, if the client is authorized to change the access control /* At this point, if the client is authorized to change the access control
* list, we should getpeername() information, and add the client to * list, we should getpeername() information, and add the client to