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authorMike Gabriel <mike.gabriel@das-netzwerkteam.de>2016-10-13 14:02:51 +0200
committerMike Gabriel <mike.gabriel@das-netzwerkteam.de>2016-10-13 14:02:51 +0200
commit133c91f732c6259fa9099100cd5b781d5b1cbfa1 (patch)
tree478aa88a8c42cbcb8221dd6680a16131556b49be /nx-X11
parent051d521f6e20761ba6831cecd91883da960fa931 (diff)
parenta9f623f0a63372ca0705e8394fadf514dec55b1c (diff)
downloadnx-libs-133c91f732c6259fa9099100cd5b781d5b1cbfa1.tar.gz
nx-libs-133c91f732c6259fa9099100cd5b781d5b1cbfa1.tar.bz2
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Merge branch 'uli42-pr/libX11_debian_backports' into 3.6.x
Attributes GH PR #215: https://github.com/ArcticaProject/nx-libs/pull/215
Diffstat (limited to 'nx-X11')
-rw-r--r--nx-X11/lib/X11/AllCells.c9
-rw-r--r--nx-X11/lib/X11/Font.c80
-rw-r--r--nx-X11/lib/X11/FontInfo.c120
-rw-r--r--nx-X11/lib/X11/FontNames.c35
-rw-r--r--nx-X11/lib/X11/GetAtomNm.c4
-rw-r--r--nx-X11/lib/X11/GetDflt.c25
-rw-r--r--nx-X11/lib/X11/GetFPath.c36
-rw-r--r--nx-X11/lib/X11/GetImage.c12
-rw-r--r--nx-X11/lib/X11/GetMoEv.c26
-rw-r--r--nx-X11/lib/X11/GetPntMap.c31
-rw-r--r--nx-X11/lib/X11/GetProp.c33
-rw-r--r--nx-X11/lib/X11/Imakefile2
-rw-r--r--nx-X11/lib/X11/LiHosts.c22
-rw-r--r--nx-X11/lib/X11/LiICmaps.c8
-rw-r--r--nx-X11/lib/X11/LiProps.c8
-rw-r--r--nx-X11/lib/X11/ListExt.c36
-rw-r--r--nx-X11/lib/X11/ModMap.c13
-rw-r--r--nx-X11/lib/X11/OpenDis.c15
-rw-r--r--nx-X11/lib/X11/QuColors.c10
-rw-r--r--nx-X11/lib/X11/QuTree.c8
-rw-r--r--nx-X11/lib/X11/XKBExtDev.c6
-rw-r--r--nx-X11/lib/X11/XKBGeom.c15
-rw-r--r--nx-X11/lib/X11/XKBGetMap.c33
-rw-r--r--nx-X11/lib/X11/XKBNames.c2
-rw-r--r--nx-X11/lib/X11/Xrm.c30
-rw-r--r--nx-X11/lib/X11/XrmI.h4
-rw-r--r--nx-X11/lib/X11/cmsColNm.c27
-rw-r--r--nx-X11/lib/X11/imLcPrs.c73
-rw-r--r--nx-X11/lib/X11/imTrX.c2
-rw-r--r--nx-X11/lib/X11/lcFile.c24
-rw-r--r--nx-X11/lib/X11/pathmax.h82
31 files changed, 528 insertions, 303 deletions
diff --git a/nx-X11/lib/X11/AllCells.c b/nx-X11/lib/X11/AllCells.c
index bbc977059..6d9548f0d 100644
--- a/nx-X11/lib/X11/AllCells.c
+++ b/nx-X11/lib/X11/AllCells.c
@@ -54,8 +54,13 @@ Status XAllocColorCells(
status = _XReply(dpy, (xReply *)&rep, 0, xFalse);
if (status) {
- _XRead32 (dpy, (long *) pixels, 4L * (long) (rep.nPixels));
- _XRead32 (dpy, (long *) masks, 4L * (long) (rep.nMasks));
+ if ((rep.nPixels > ncolors) || (rep.nMasks > nplanes)) {
+ _XEatDataWords(dpy, rep.length);
+ status = 0; /* Failure */
+ } else {
+ _XRead32 (dpy, (long *) pixels, 4L * (long) (rep.nPixels));
+ _XRead32 (dpy, (long *) masks, 4L * (long) (rep.nMasks));
+ }
}
UnlockDisplay(dpy);
diff --git a/nx-X11/lib/X11/Font.c b/nx-X11/lib/X11/Font.c
index f60a8a874..d311cd0f7 100644
--- a/nx-X11/lib/X11/Font.c
+++ b/nx-X11/lib/X11/Font.c
@@ -31,6 +31,7 @@ authorization from the X Consortium and the XFree86 Project.
#include <config.h>
#endif
#include "Xlibint.h"
+#include <limits.h>
#if defined(XF86BIGFONT)
#define USE_XF86BIGFONT
@@ -183,7 +184,8 @@ _XQueryFont (
unsigned long seq)
{
register XFontStruct *fs;
- register long nbytes;
+ unsigned long nbytes;
+ unsigned long reply_left; /* unused data words left in reply buffer */
xQueryFontReply reply;
register xResourceReq *req;
register _XExtension *ext;
@@ -211,9 +213,10 @@ _XQueryFont (
}
if (seq)
DeqAsyncHandler(dpy, &async);
+ reply_left = reply.length -
+ ((SIZEOF(xQueryFontReply) - SIZEOF(xReply)) >> 2);
if (! (fs = (XFontStruct *) Xmalloc (sizeof (XFontStruct)))) {
- _XEatData(dpy, (unsigned long)(reply.nFontProps * SIZEOF(xFontProp) +
- reply.nCharInfos * SIZEOF(xCharInfo)));
+ _XEatDataWords(dpy, reply_left);
return (XFontStruct *)NULL;
}
fs->ext_data = NULL;
@@ -239,32 +242,42 @@ _XQueryFont (
*/
fs->properties = NULL;
if (fs->n_properties > 0) {
- nbytes = reply.nFontProps * sizeof(XFontProp);
- fs->properties = (XFontProp *) Xmalloc ((unsigned) nbytes);
+ /* nFontProps is a CARD16 */
nbytes = reply.nFontProps * SIZEOF(xFontProp);
+ if ((nbytes >> 2) <= reply_left) {
+ size_t pbytes = reply.nFontProps * sizeof(XFontProp);
+ fs->properties = Xmalloc (pbytes);
+ }
if (! fs->properties) {
Xfree((char *) fs);
- _XEatData(dpy, (unsigned long)
- (nbytes + reply.nCharInfos * SIZEOF(xCharInfo)));
+ _XEatDataWords(dpy, reply_left);
return (XFontStruct *)NULL;
}
_XRead32 (dpy, (long *)fs->properties, nbytes);
+ reply_left -= (nbytes >> 2);
}
/*
* If no characters in font, then it is a bad font, but
* shouldn't try to read nothing.
*/
+ /* have to unpack charinfos on some machines (CRAY) */
fs->per_char = NULL;
if (reply.nCharInfos > 0){
- nbytes = reply.nCharInfos * sizeof(XCharStruct);
- if (! (fs->per_char = (XCharStruct *) Xmalloc ((unsigned) nbytes))) {
+ /* nCharInfos is a CARD32 */
+ if (reply.nCharInfos < (INT_MAX / sizeof(XCharStruct))) {
+ nbytes = reply.nCharInfos * SIZEOF(xCharInfo);
+ if ((nbytes >> 2) <= reply_left) {
+ size_t cibytes = reply.nCharInfos * sizeof(XCharStruct);
+ fs->per_char = Xmalloc (cibytes);
+ }
+ }
+ if (! fs->per_char) {
if (fs->properties) Xfree((char *) fs->properties);
Xfree((char *) fs);
- _XEatData(dpy, (unsigned long)
- (reply.nCharInfos * SIZEOF(xCharInfo)));
+ _XEatDataWords(dpy, reply_left);
return (XFontStruct *)NULL;
}
- nbytes = reply.nCharInfos * SIZEOF(xCharInfo);
+
_XRead16 (dpy, (char *)fs->per_char, nbytes);
}
@@ -391,7 +404,8 @@ _XF86BigfontQueryFont (
unsigned long seq)
{
register XFontStruct *fs;
- register long nbytes;
+ unsigned long nbytes;
+ unsigned long reply_left; /* unused data left in reply buffer */
xXF86BigfontQueryFontReply reply;
register xXF86BigfontQueryFontReq *req;
register _XExtension *ext;
@@ -444,13 +458,10 @@ _XF86BigfontQueryFont (
DeqAsyncHandler(dpy, &async2);
if (seq)
DeqAsyncHandler(dpy, &async1);
+ reply_left = reply.length -
+ ((SIZEOF(xXF86BigfontQueryFontReply) - SIZEOF(xReply)) >> 2);
if (! (fs = (XFontStruct *) Xmalloc (sizeof (XFontStruct)))) {
- _XEatData(dpy,
- reply.nFontProps * SIZEOF(xFontProp)
- + (reply.nCharInfos > 0 && reply.shmid == (CARD32)(-1)
- ? reply.nUniqCharInfos * SIZEOF(xCharInfo)
- + (reply.nCharInfos+1)/2 * 2 * sizeof(CARD16)
- : 0));
+ _XEatDataWords(dpy, reply_left);
return (XFontStruct *)NULL;
}
fs->ext_data = NULL;
@@ -476,23 +487,33 @@ _XF86BigfontQueryFont (
*/
fs->properties = NULL;
if (fs->n_properties > 0) {
- nbytes = reply.nFontProps * sizeof(XFontProp);
- fs->properties = (XFontProp *) Xmalloc ((unsigned) nbytes);
+ /* nFontProps is a CARD16 */
nbytes = reply.nFontProps * SIZEOF(xFontProp);
+ if ((nbytes >> 2) <= reply_left) {
+ size_t pbytes = reply.nFontProps * sizeof(XFontProp);
+ fs->properties = Xmalloc (pbytes);
+ }
if (! fs->properties) {
Xfree((char *) fs);
- _XEatData(dpy,
- nbytes
- + (reply.nCharInfos > 0 && reply.shmid == (CARD32)(-1)
- ? reply.nUniqCharInfos * SIZEOF(xCharInfo)
- + (reply.nCharInfos+1)/2 * 2 * sizeof(CARD16)
- : 0));
+ _XEatDataWords(dpy, reply_left);
return (XFontStruct *)NULL;
}
_XRead32 (dpy, (long *)fs->properties, nbytes);
+ reply_left -= (nbytes >> 2);
}
fs->per_char = NULL;
+#ifndef LONG64
+ /* compares each part to half the maximum, which should be far more than
+ any real font needs, so the combined total doesn't overflow either */
+ if (reply.nUniqCharInfos > ((ULONG_MAX / 2) / SIZEOF(xCharInfo)) ||
+ reply.nCharInfos > ((ULONG_MAX / 2) / sizeof(CARD16))) {
+ Xfree(fs->properties);
+ Xfree((char *) fs);
+ _XEatDataWords(dpy, reply_left);
+ return (XFontStruct *)NULL;
+ }
+#endif
if (reply.nCharInfos > 0) {
/* fprintf(stderr, "received font metrics, nCharInfos = %d, nUniqCharInfos = %d, shmid = %d\n", reply.nCharInfos, reply.nUniqCharInfos, reply.shmid); */
if (reply.shmid == (CARD32)(-1)) {
@@ -506,14 +527,14 @@ _XF86BigfontQueryFont (
if (!pUniqCI) {
if (fs->properties) Xfree((char *) fs->properties);
Xfree((char *) fs);
- _XEatData(dpy, nbytes);
+ _XEatDataWords(dpy, reply_left);
return (XFontStruct *)NULL;
}
if (! (fs->per_char = (XCharStruct *) Xmalloc (reply.nCharInfos * sizeof(XCharStruct)))) {
Xfree((char *) pUniqCI);
if (fs->properties) Xfree((char *) fs->properties);
Xfree((char *) fs);
- _XEatData(dpy, nbytes);
+ _XEatDataWords(dpy, reply_left);
return (XFontStruct *)NULL;
}
_XRead16 (dpy, (char *) pUniqCI, nbytes);
@@ -568,6 +589,7 @@ _XF86BigfontQueryFont (
if (!(extcodes->serverCapabilities & CAP_VerifiedLocal)) {
struct shmid_ds buf;
if (!(shmctl(reply.shmid, IPC_STAT, &buf) >= 0
+ && reply.nCharInfos < (LONG_MAX / sizeof(XCharStruct))
&& buf.shm_segsz >= reply.shmsegoffset + reply.nCharInfos * sizeof(XCharStruct) + sizeof(CARD32)
&& *(CARD32 *)(addr + reply.shmsegoffset + reply.nCharInfos * sizeof(XCharStruct)) == extcodes->serverSignature)) {
shmdt(addr);
diff --git a/nx-X11/lib/X11/FontInfo.c b/nx-X11/lib/X11/FontInfo.c
index 368beebe4..0cb5b1910 100644
--- a/nx-X11/lib/X11/FontInfo.c
+++ b/nx-X11/lib/X11/FontInfo.c
@@ -28,6 +28,7 @@ in this Software without prior written authorization from The Open Group.
#include <config.h>
#endif
#include "Xlibint.h"
+#include <limits.h>
#if defined(XF86BIGFONT)
#define USE_XF86BIGFONT
@@ -45,10 +46,11 @@ int maxNames,
int *actualCount, /* RETURN */
XFontStruct **info) /* RETURN */
{
- register long nbytes;
+ unsigned long nbytes;
+ unsigned long reply_left; /* unused data left in reply buffer */
register int i;
register XFontStruct *fs;
- register int size = 0;
+ unsigned int size = 0;
XFontStruct *finfo = NULL;
char **flist = NULL;
xListFontsWithInfoReply reply;
@@ -67,51 +69,44 @@ XFontStruct **info) /* RETURN */
if (!_XReply (dpy, (xReply *) &reply,
((SIZEOF(xListFontsWithInfoReply) -
SIZEOF(xGenericReply)) >> 2), xFalse)) {
- for (j=(i-1); (j >= 0); j--) {
- Xfree(flist[j]);
- if (finfo[j].properties) Xfree((char *) finfo[j].properties);
- }
- if (flist) Xfree((char *) flist);
- if (finfo) Xfree((char *) finfo);
- UnlockDisplay(dpy);
- SyncHandle();
- return ((char **) NULL);
+ reply.nameLength = 0; /* avoid trying to read more replies */
+ reply_left = 0;
+ goto badmem;
}
- if (reply.nameLength == 0)
+ reply_left = reply.length -
+ ((SIZEOF(xListFontsWithInfoReply) - SIZEOF(xGenericReply)) >> 2);
+ if (reply.nameLength == 0) {
+ _XEatDataWords(dpy, reply_left);
break;
+ }
+ if (reply.nReplies >= (INT_MAX - i)) /* avoid overflowing size */
+ goto badmem;
if ((i + reply.nReplies) >= size) {
size = i + reply.nReplies + 1;
+ if (size >= (INT_MAX / sizeof(XFontStruct)))
+ goto badmem;
+
if (finfo) {
- XFontStruct * tmp_finfo = (XFontStruct *)
- Xrealloc ((char *) finfo,
- (unsigned) (sizeof(XFontStruct) * size));
- char ** tmp_flist = (char **)
- Xrealloc ((char *) flist,
- (unsigned) (sizeof(char *) * (size+1)));
-
- if ((! tmp_finfo) || (! tmp_flist)) {
- /* free all the memory that we allocated */
- for (j=(i-1); (j >= 0); j--) {
- Xfree(flist[j]);
- if (finfo[j].properties)
- Xfree((char *) finfo[j].properties);
- }
- if (tmp_flist) Xfree((char *) tmp_flist);
- else Xfree((char *) flist);
- if (tmp_finfo) Xfree((char *) tmp_finfo);
- else Xfree((char *) finfo);
- goto clearwire;
- }
- finfo = tmp_finfo;
- flist = tmp_flist;
+ XFontStruct * tmp_finfo;
+ char ** tmp_flist;
+
+ tmp_finfo = Xrealloc (finfo, sizeof(XFontStruct) * size);
+ if (tmp_finfo)
+ finfo = tmp_finfo;
+ else
+ goto badmem;
+
+ tmp_flist = Xrealloc (flist, sizeof(char *) * (size+1));
+ if (tmp_flist)
+ flist = tmp_flist;
+ else
+ goto badmem;
}
else {
- if (! (finfo = (XFontStruct *)
- Xmalloc((unsigned) (sizeof(XFontStruct) * size))))
+ if (! (finfo = Xmalloc(sizeof(XFontStruct) * size)))
goto clearwire;
- if (! (flist = (char **)
- Xmalloc((unsigned) (sizeof(char *) * (size+1))))) {
+ if (! (flist = Xmalloc(sizeof(char *) * (size+1)))) {
Xfree((char *) finfo);
goto clearwire;
}
@@ -137,24 +132,27 @@ XFontStruct **info) /* RETURN */
fs->max_bounds = * (XCharStruct *) &reply.maxBounds;
fs->n_properties = reply.nFontProps;
+ fs->properties = NULL;
if (fs->n_properties > 0) {
- nbytes = reply.nFontProps * sizeof(XFontProp);
- if (! (fs->properties = (XFontProp *) Xmalloc((unsigned) nbytes)))
- goto badmem;
+ /* nFontProps is a CARD16 */
nbytes = reply.nFontProps * SIZEOF(xFontProp);
+ if ((nbytes >> 2) <= reply_left) {
+ size_t pbytes = reply.nFontProps * sizeof(XFontProp);
+ fs->properties = Xmalloc (pbytes);
+ }
+ if (! fs->properties)
+ goto badmem;
_XRead32 (dpy, (long *)fs->properties, nbytes);
+ reply_left -= (nbytes >> 2);
+ }
- } else
- fs->properties = NULL;
-
- j = reply.nameLength + 1;
+ /* nameLength is a CARD8 */
+ nbytes = reply.nameLength + 1;
if (!i)
- j++; /* make first string 1 byte longer, to match XListFonts */
- flist[i] = (char *) Xmalloc ((unsigned int) j);
+ nbytes++; /* make first string 1 byte longer, to match XListFonts */
+ flist[i] = Xmalloc (nbytes);
if (! flist[i]) {
if (finfo[i].properties) Xfree((char *) finfo[i].properties);
- nbytes = (reply.nameLength + 3) & ~3;
- _XEatData(dpy, (unsigned long) nbytes);
goto badmem;
}
if (!i) {
@@ -176,27 +174,25 @@ XFontStruct **info) /* RETURN */
badmem:
/* Free all memory allocated by this function. */
for (j=(i-1); (j >= 0); j--) {
- Xfree(flist[j]);
- if (finfo[j].properties) Xfree((char *) finfo[j].properties);
+ if (j == 0)
+ flist[j]--; /* was incremented above */
+ Xfree(flist[j]);
+ if (finfo[j].properties) Xfree((char *) finfo[j].properties);
}
if (flist) Xfree((char *) flist);
if (finfo) Xfree((char *) finfo);
clearwire:
/* Clear the wire. */
- do {
- if (reply.nFontProps)
- _XEatData(dpy, (unsigned long)
- (reply.nFontProps * SIZEOF(xFontProp)));
- nbytes = (reply.nameLength + 3) & ~3;
- _XEatData(dpy, (unsigned long) nbytes);
- }
- while (_XReply(dpy,(xReply *) &reply, ((SIZEOF(xListFontsWithInfoReply) -
- SIZEOF(xGenericReply)) >> 2),
- xFalse) && (reply.nameLength != 0));
-
+ _XEatDataWords(dpy, reply_left);
+ while ((reply.nameLength != 0) &&
+ _XReply(dpy, (xReply *) &reply,
+ ((SIZEOF(xListFontsWithInfoReply) - SIZEOF(xGenericReply))
+ >> 2), xTrue));
UnlockDisplay(dpy);
SyncHandle();
+ *info = NULL;
+ *actualCount = 0;
return (char **) NULL;
}
diff --git a/nx-X11/lib/X11/FontNames.c b/nx-X11/lib/X11/FontNames.c
index 3018cf2cf..b5bc7b4ba 100644
--- a/nx-X11/lib/X11/FontNames.c
+++ b/nx-X11/lib/X11/FontNames.c
@@ -29,6 +29,7 @@ in this Software without prior written authorization from The Open Group.
#include <config.h>
#endif
#include "Xlibint.h"
+#include <limits.h>
char **
XListFonts(
@@ -40,11 +41,13 @@ int *actualCount) /* RETURN */
register long nbytes;
register unsigned i;
register int length;
- char **flist;
- char *ch;
+ char **flist = NULL;
+ char *ch = NULL;
+ char *chend;
+ int count = 0;
xListFontsReply rep;
register xListFontsReq *req;
- register long rlen;
+ unsigned long rlen;
LockDisplay(dpy);
GetReq(ListFonts, req);
@@ -62,15 +65,17 @@ int *actualCount) /* RETURN */
}
if (rep.nFonts) {
- flist = (char **)Xmalloc ((unsigned)rep.nFonts * sizeof(char *));
- rlen = rep.length << 2;
- ch = (char *) Xmalloc((unsigned) (rlen + 1));
+ flist = Xmalloc (rep.nFonts * sizeof(char *));
+ if (rep.length < (LONG_MAX >> 2)) {
+ rlen = rep.length << 2;
+ ch = Xmalloc(rlen + 1);
/* +1 to leave room for last null-terminator */
+ }
if ((! flist) || (! ch)) {
if (flist) Xfree((char *) flist);
if (ch) Xfree(ch);
- _XEatData(dpy, (unsigned long) rlen);
+ _XEatDataWords(dpy, rep.length);
*actualCount = 0;
UnlockDisplay(dpy);
SyncHandle();
@@ -81,17 +86,21 @@ int *actualCount) /* RETURN */
/*
* unpack into null terminated strings.
*/
+ chend = ch + (rlen + 1);
length = *(unsigned char *)ch;
*ch = 1; /* make sure it is non-zero for XFreeFontNames */
for (i = 0; i < rep.nFonts; i++) {
- flist[i] = ch + 1; /* skip over length */
- ch += length + 1; /* find next length ... */
- length = *(unsigned char *)ch;
- *ch = '\0'; /* and replace with null-termination */
+ if (ch + length < chend) {
+ flist[i] = ch + 1; /* skip over length */
+ ch += length + 1; /* find next length ... */
+ length = *(unsigned char *)ch;
+ *ch = '\0'; /* and replace with null-termination */
+ count++;
+ } else
+ flist[i] = NULL;
}
}
- else flist = (char **) NULL;
- *actualCount = rep.nFonts;
+ *actualCount = count;
UnlockDisplay(dpy);
SyncHandle();
return (flist);
diff --git a/nx-X11/lib/X11/GetAtomNm.c b/nx-X11/lib/X11/GetAtomNm.c
index 9823c690c..996f7ebf9 100644
--- a/nx-X11/lib/X11/GetAtomNm.c
+++ b/nx-X11/lib/X11/GetAtomNm.c
@@ -78,7 +78,7 @@ char *XGetAtomName(
name[rep.nameLength] = '\0';
_XUpdateAtomCache(dpy, name, atom, 0, -1, 0);
} else {
- _XEatData(dpy, (unsigned long) (rep.nameLength + 3) & ~3);
+ _XEatDataWords(dpy, rep.length);
name = (char *) NULL;
}
UnlockDisplay(dpy);
@@ -176,7 +176,7 @@ XGetAtomNames (
_XUpdateAtomCache(dpy, names_return[missed], atoms[missed],
0, -1, 0);
} else {
- _XEatData(dpy, (unsigned long) (rep.nameLength + 3) & ~3);
+ _XEatDataWords(dpy, rep.length);
async_state.status = 0;
}
}
diff --git a/nx-X11/lib/X11/GetDflt.c b/nx-X11/lib/X11/GetDflt.c
index 0c00b3c94..749893c7e 100644
--- a/nx-X11/lib/X11/GetDflt.c
+++ b/nx-X11/lib/X11/GetDflt.c
@@ -52,30 +52,7 @@ SOFTWARE.
#include "Xlibint.h"
#include <nx-X11/Xos.h>
#include <nx-X11/Xresource.h>
-
-#ifndef X_NOT_POSIX
-#ifdef _POSIX_SOURCE
-#include <limits.h>
-#else
-#define _POSIX_SOURCE
-#include <limits.h>
-#undef _POSIX_SOURCE
-#endif
-#endif
-#ifndef PATH_MAX
-#ifdef WIN32
-#define PATH_MAX 512
-#else
-#include <sys/param.h>
-#endif
-#ifndef PATH_MAX
-#ifdef MAXPATHLEN
-#define PATH_MAX MAXPATHLEN
-#else
-#define PATH_MAX 1024
-#endif
-#endif
-#endif
+#include "pathmax.h"
#ifdef XTHREADS
#include <nx-X11/Xthreads.h>
diff --git a/nx-X11/lib/X11/GetFPath.c b/nx-X11/lib/X11/GetFPath.c
index 7d497c92e..abd4a5dbd 100644
--- a/nx-X11/lib/X11/GetFPath.c
+++ b/nx-X11/lib/X11/GetFPath.c
@@ -28,15 +28,18 @@ in this Software without prior written authorization from The Open Group.
#include <config.h>
#endif
#include "Xlibint.h"
+#include <limits.h>
char **XGetFontPath(
register Display *dpy,
int *npaths) /* RETURN */
{
xGetFontPathReply rep;
- register long nbytes;
- char **flist;
- char *ch;
+ unsigned long nbytes;
+ char **flist = NULL;
+ char *ch = NULL;
+ char *chend;
+ int count = 0;
register unsigned i;
register int length;
register xReq *req;
@@ -46,16 +49,17 @@ char **XGetFontPath(
(void) _XReply (dpy, (xReply *) &rep, 0, xFalse);
if (rep.nPaths) {
- flist = (char **)
- Xmalloc((unsigned) rep.nPaths * sizeof (char *));
- nbytes = (long)rep.length << 2;
- ch = (char *) Xmalloc ((unsigned) (nbytes + 1));
+ flist = Xmalloc(rep.nPaths * sizeof (char *));
+ if (rep.length < (LONG_MAX >> 2)) {
+ nbytes = (unsigned long) rep.length << 2;
+ ch = Xmalloc (nbytes + 1);
/* +1 to leave room for last null-terminator */
+ }
if ((! flist) || (! ch)) {
if (flist) Xfree((char *) flist);
if (ch) Xfree(ch);
- _XEatData(dpy, (unsigned long) nbytes);
+ _XEatDataWords(dpy, rep.length);
UnlockDisplay(dpy);
SyncHandle();
return (char **) NULL;
@@ -65,16 +69,20 @@ char **XGetFontPath(
/*
* unpack into null terminated strings.
*/
+ chend = ch + (nbytes + 1);
length = *ch;
for (i = 0; i < rep.nPaths; i++) {
- flist[i] = ch+1; /* skip over length */
- ch += length + 1; /* find next length ... */
- length = *ch;
- *ch = '\0'; /* and replace with null-termination */
+ if (ch + length < chend) {
+ flist[i] = ch+1; /* skip over length */
+ ch += length + 1; /* find next length ... */
+ length = *ch;
+ *ch = '\0'; /* and replace with null-termination */
+ count++;
+ } else
+ flist[i] = NULL;
}
}
- else flist = NULL;
- *npaths = rep.nPaths;
+ *npaths = count;
UnlockDisplay(dpy);
SyncHandle();
return (flist);
diff --git a/nx-X11/lib/X11/GetImage.c b/nx-X11/lib/X11/GetImage.c
index ddd434a81..59fb45eb1 100644
--- a/nx-X11/lib/X11/GetImage.c
+++ b/nx-X11/lib/X11/GetImage.c
@@ -30,6 +30,7 @@ in this Software without prior written authorization from The Open Group.
#include "Xlibint.h"
#include <nx-X11/Xutil.h> /* for XDestroyImage */
#include "ImUtil.h"
+#include <limits.h>
#define ROUNDUP(nbytes, pad) (((((nbytes) - 1) + (pad)) / (pad)) * (pad))
@@ -56,7 +57,7 @@ XImage *XGetImage (
xGetImageReply rep;
register xGetImageReq *req;
char *data;
- long nbytes;
+ unsigned long nbytes;
XImage *image;
LockDisplay(dpy);
GetReq (GetImage, req);
@@ -78,10 +79,13 @@ XImage *XGetImage (
return (XImage *)NULL;
}
- nbytes = (long)rep.length << 2;
- data = (char *) Xmalloc((unsigned) nbytes);
+ if (rep.length < (INT_MAX >> 2)) {
+ nbytes = (unsigned long)rep.length << 2;
+ data = Xmalloc(nbytes);
+ } else
+ data = NULL;
if (! data) {
- _XEatData(dpy, (unsigned long) nbytes);
+ _XEatDataWords(dpy, rep.length);
UnlockDisplay(dpy);
SyncHandle();
return (XImage *) NULL;
diff --git a/nx-X11/lib/X11/GetMoEv.c b/nx-X11/lib/X11/GetMoEv.c
index 3db176feb..ad9c77277 100644
--- a/nx-X11/lib/X11/GetMoEv.c
+++ b/nx-X11/lib/X11/GetMoEv.c
@@ -28,6 +28,7 @@ in this Software without prior written authorization from The Open Group.
#include <config.h>
#endif
#include "Xlibint.h"
+#include <limits.h>
XTimeCoord *XGetMotionEvents(
register Display *dpy,
@@ -39,7 +40,6 @@ XTimeCoord *XGetMotionEvents(
xGetMotionEventsReply rep;
register xGetMotionEventsReq *req;
XTimeCoord *tc = NULL;
- long nbytes;
LockDisplay(dpy);
GetReq(GetMotionEvents, req);
req->window = w;
@@ -52,26 +52,22 @@ XTimeCoord *XGetMotionEvents(
return (NULL);
}
- if (rep.nEvents) {
- if (! (tc = (XTimeCoord *)
- Xmalloc( (unsigned)
- (nbytes = (long) rep.nEvents * sizeof(XTimeCoord))))) {
- _XEatData (dpy, (unsigned long) nbytes);
- UnlockDisplay(dpy);
- SyncHandle();
- return (NULL);
- }
+ if (rep.nEvents && (rep.nEvents < (INT_MAX / sizeof(XTimeCoord))))
+ tc = Xmalloc(rep.nEvents * sizeof(XTimeCoord));
+ if (tc == NULL) {
+ /* server returned either no events or a bad event count */
+ *nEvents = 0;
+ _XEatDataWords (dpy, rep.length);
}
-
- *nEvents = rep.nEvents;
- nbytes = SIZEOF (xTimecoord);
+ else
{
register XTimeCoord *tcptr;
- register int i;
+ unsigned int i;
xTimecoord xtc;
+ *nEvents = (int) rep.nEvents;
for (i = rep.nEvents, tcptr = tc; i > 0; i--, tcptr++) {
- _XRead (dpy, (char *) &xtc, nbytes);
+ _XRead (dpy, (char *) &xtc, SIZEOF (xTimecoord));
tcptr->time = xtc.time;
tcptr->x = cvtINT16toShort (xtc.x);
tcptr->y = cvtINT16toShort (xtc.y);
diff --git a/nx-X11/lib/X11/GetPntMap.c b/nx-X11/lib/X11/GetPntMap.c
index 0fcdb6696..29fdf21f0 100644
--- a/nx-X11/lib/X11/GetPntMap.c
+++ b/nx-X11/lib/X11/GetPntMap.c
@@ -29,6 +29,7 @@ in this Software without prior written authorization from The Open Group.
#include <config.h>
#endif
#include "Xlibint.h"
+#include <limits.h>
#ifdef MIN /* some systems define this in <sys/param.h> */
#undef MIN
@@ -42,7 +43,7 @@ int XGetPointerMapping (
{
unsigned char mapping[256]; /* known fixed size */
- long nbytes, remainder = 0;
+ unsigned long nbytes, remainder = 0;
xGetPointerMappingReply rep;
register xReq *req;
@@ -54,9 +55,15 @@ int XGetPointerMapping (
return 0;
}
- nbytes = (long)rep.length << 2;
-
/* Don't count on the server returning a valid value */
+ if (rep.length >= (INT_MAX >> 2)) {
+ _XEatDataWords(dpy, rep.length);
+ UnlockDisplay(dpy);
+ SyncHandle();
+ return 0;
+ }
+
+ nbytes = (unsigned long) rep.length << 2;
if (nbytes > sizeof mapping) {
remainder = nbytes - sizeof mapping;
nbytes = sizeof mapping;
@@ -69,7 +76,7 @@ int XGetPointerMapping (
}
if (remainder)
- _XEatData(dpy, (unsigned long)remainder);
+ _XEatData(dpy, remainder);
UnlockDisplay(dpy);
SyncHandle();
@@ -86,8 +93,8 @@ XGetKeyboardMapping (Display *dpy,
int count,
int *keysyms_per_keycode)
{
- long nbytes;
- unsigned long nkeysyms;
+ unsigned long nbytes;
+ CARD32 nkeysyms;
register KeySym *mapping = NULL;
xGetKeyboardMappingReply rep;
register xGetKeyboardMappingReq *req;
@@ -102,17 +109,19 @@ XGetKeyboardMapping (Display *dpy,
return (KeySym *) NULL;
}
- nkeysyms = (unsigned long) rep.length;
+ nkeysyms = rep.length;
if (nkeysyms > 0) {
- nbytes = nkeysyms * sizeof (KeySym);
- mapping = (KeySym *) Xmalloc ((unsigned) nbytes);
- nbytes = nkeysyms << 2;
+ if (nkeysyms < (INT_MAX / sizeof (KeySym))) {
+ nbytes = nkeysyms * sizeof (KeySym);
+ mapping = Xmalloc (nbytes);
+ }
if (! mapping) {
- _XEatData(dpy, (unsigned long) nbytes);
+ _XEatDataWords(dpy, rep.length);
UnlockDisplay(dpy);
SyncHandle();
return (KeySym *) NULL;
}
+ nbytes = nkeysyms << 2;
_XRead32 (dpy, (long *) mapping, nbytes);
}
*keysyms_per_keycode = rep.keySymsPerKeyCode;
diff --git a/nx-X11/lib/X11/GetProp.c b/nx-X11/lib/X11/GetProp.c
index a80c19c50..4149199f5 100644
--- a/nx-X11/lib/X11/GetProp.c
+++ b/nx-X11/lib/X11/GetProp.c
@@ -28,6 +28,7 @@ in this Software without prior written authorization from The Open Group.
#include <config.h>
#endif
#include "Xlibint.h"
+#include <limits.h>
int
XGetWindowProperty(
@@ -48,6 +49,13 @@ XGetWindowProperty(
register xGetPropertyReq *req;
xError error;
+ /* Always initialize return values, in case callers fail to initialize
+ them and fail to check the return code for an error. */
+ *actual_type = None;
+ *actual_format = 0;
+ *nitems = *bytesafter = 0L;
+ *prop = (unsigned char *) NULL;
+
LockDisplay(dpy);
GetReq (GetProperty, req);
req->window = w;
@@ -64,10 +72,18 @@ XGetWindowProperty(
return (1); /* not Success */
}
- *prop = (unsigned char *) NULL;
if (reply.propertyType != None) {
- long nbytes, netbytes;
- switch (reply.format) {
+ unsigned long nbytes, netbytes;
+ int format = reply.format;
+
+ /*
+ * Protect against both integer overflow and just plain oversized
+ * memory allocation - no server should ever return this many props.
+ */
+ if (reply.nItems >= (INT_MAX >> 4))
+ format = -1; /* fall through to default error case */
+
+ switch (format) {
/*
* One extra byte is malloced than is needed to contain the property
* data, but this last byte is null terminated and convenient for
@@ -76,24 +92,21 @@ XGetWindowProperty(
*/
case 8:
nbytes = netbytes = reply.nItems;
- if (nbytes + 1 > 0 &&
- (*prop = (unsigned char *) Xmalloc ((unsigned)nbytes + 1)))
+ if (nbytes + 1 > 0 && (*prop = Xmalloc (nbytes + 1)))
_XReadPad (dpy, (char *) *prop, netbytes);
break;
case 16:
nbytes = reply.nItems * sizeof (short);
netbytes = reply.nItems << 1;
- if (nbytes + 1 > 0 &&
- (*prop = (unsigned char *) Xmalloc ((unsigned)nbytes + 1)))
+ if (nbytes + 1 > 0 && (*prop = Xmalloc (nbytes + 1)))
_XRead16Pad (dpy, (short *) *prop, netbytes);
break;
case 32:
nbytes = reply.nItems * sizeof (long);
netbytes = reply.nItems << 2;
- if (nbytes + 1 > 0 &&
- (*prop = (unsigned char *) Xmalloc ((unsigned)nbytes + 1)))
+ if (nbytes + 1 > 0 && (*prop = Xmalloc (nbytes + 1)))
_XRead32 (dpy, (long *) *prop, netbytes);
break;
@@ -115,7 +128,7 @@ XGetWindowProperty(
break;
}
if (! *prop) {
- _XEatData(dpy, (unsigned long) netbytes);
+ _XEatDataWords(dpy, reply.length);
UnlockDisplay(dpy);
SyncHandle();
return(BadAlloc); /* not Success */
diff --git a/nx-X11/lib/X11/Imakefile b/nx-X11/lib/X11/Imakefile
index d4045b615..5a1fc5ff2 100644
--- a/nx-X11/lib/X11/Imakefile
+++ b/nx-X11/lib/X11/Imakefile
@@ -1146,7 +1146,7 @@ MakeLintSubdirs($(LINTSUBDIRS),install.ln,install.ln)
#endif
#endif
-includes:: XlibConf.h
+includes:: XlibConf.h pathmax.h
#include <Threads.tmpl>
diff --git a/nx-X11/lib/X11/LiHosts.c b/nx-X11/lib/X11/LiHosts.c
index 63ecc508a..6ec956e72 100644
--- a/nx-X11/lib/X11/LiHosts.c
+++ b/nx-X11/lib/X11/LiHosts.c
@@ -62,6 +62,8 @@ X Window System is a trademark of The Open Group.
#include <config.h>
#endif
#include "Xlibint.h"
+#include <limits.h>
+
/*
* can be freed using XFree.
*/
@@ -73,7 +75,6 @@ XHostAddress *XListHosts (
{
register XHostAddress *outbuf = NULL, *op;
xListHostsReply reply;
- long nbytes;
unsigned char *buf, *bp;
register unsigned i;
register xListHostsReq *req;
@@ -90,19 +91,26 @@ XHostAddress *XListHosts (
}
if (reply.nHosts) {
- nbytes = reply.length << 2; /* compute number of bytes in reply */
+ unsigned long nbytes = reply.length << 2; /* number of bytes in reply */
+ const unsigned long max_hosts = INT_MAX /
+ (sizeof(XHostAddress) + sizeof(XServerInterpretedAddress));
+
+ if (reply.nHosts < max_hosts) {
+ unsigned long hostbytes = reply.nHosts *
+ (sizeof(XHostAddress) + sizeof(XServerInterpretedAddress));
- op = outbuf = (XHostAddress *)
- Xmalloc((unsigned) (nbytes +
- (reply.nHosts * sizeof(XHostAddress)) +
- (reply.nHosts * sizeof(XServerInterpretedAddress))));
+ if (reply.length < (INT_MAX >> 2) &&
+ (hostbytes >> 2) < ((INT_MAX >> 2) - reply.length))
+ outbuf = Xmalloc(nbytes + hostbytes);
+ }
if (! outbuf) {
- _XEatData(dpy, (unsigned long) nbytes);
+ _XEatDataWords(dpy, reply.length);
UnlockDisplay(dpy);
SyncHandle();
return (XHostAddress *) NULL;
}
+ op = outbuf;
sip = (XServerInterpretedAddress *)
(((unsigned char *) outbuf) + (reply.nHosts * sizeof(XHostAddress)));
bp = buf = ((unsigned char *) sip)
diff --git a/nx-X11/lib/X11/LiICmaps.c b/nx-X11/lib/X11/LiICmaps.c
index e98161916..45a2f2fd3 100644
--- a/nx-X11/lib/X11/LiICmaps.c
+++ b/nx-X11/lib/X11/LiICmaps.c
@@ -34,7 +34,7 @@ Colormap *XListInstalledColormaps(
Window win,
int *n) /* RETURN */
{
- long nbytes;
+ unsigned long nbytes;
Colormap *cmaps;
xListInstalledColormapsReply rep;
register xResourceReq *req;
@@ -51,14 +51,14 @@ Colormap *XListInstalledColormaps(
if (rep.nColormaps) {
nbytes = rep.nColormaps * sizeof(Colormap);
- cmaps = (Colormap *) Xmalloc((unsigned) nbytes);
- nbytes = rep.nColormaps << 2;
+ cmaps = Xmalloc(nbytes);
if (! cmaps) {
- _XEatData(dpy, (unsigned long) nbytes);
+ _XEatDataWords(dpy, rep.length);
UnlockDisplay(dpy);
SyncHandle();
return((Colormap *) NULL);
}
+ nbytes = rep.nColormaps << 2;
_XRead32 (dpy, (long *) cmaps, nbytes);
}
else cmaps = (Colormap *) NULL;
diff --git a/nx-X11/lib/X11/LiProps.c b/nx-X11/lib/X11/LiProps.c
index 72560aba7..d9c746563 100644
--- a/nx-X11/lib/X11/LiProps.c
+++ b/nx-X11/lib/X11/LiProps.c
@@ -34,7 +34,7 @@ Atom *XListProperties(
Window window,
int *n_props) /* RETURN */
{
- long nbytes;
+ unsigned long nbytes;
xListPropertiesReply rep;
Atom *properties;
register xResourceReq *req;
@@ -50,14 +50,14 @@ Atom *XListProperties(
if (rep.nProperties) {
nbytes = rep.nProperties * sizeof(Atom);
- properties = (Atom *) Xmalloc ((unsigned) nbytes);
- nbytes = rep.nProperties << 2;
+ properties = Xmalloc (nbytes);
if (! properties) {
- _XEatData(dpy, (unsigned long) nbytes);
+ _XEatDataWords(dpy, rep.length);
UnlockDisplay(dpy);
SyncHandle();
return (Atom *) NULL;
}
+ nbytes = rep.nProperties << 2;
_XRead32 (dpy, (long *) properties, nbytes);
}
else properties = (Atom *) NULL;
diff --git a/nx-X11/lib/X11/ListExt.c b/nx-X11/lib/X11/ListExt.c
index 16b522e88..e925c4773 100644
--- a/nx-X11/lib/X11/ListExt.c
+++ b/nx-X11/lib/X11/ListExt.c
@@ -28,18 +28,21 @@ in this Software without prior written authorization from The Open Group.
#include <config.h>
#endif
#include "Xlibint.h"
+#include <limits.h>
char **XListExtensions(
register Display *dpy,
int *nextensions) /* RETURN */
{
xListExtensionsReply rep;
- char **list;
- char *ch;
+ char **list = NULL;
+ char *ch = NULL;
+ char *chend;
+ int count = 0;
register unsigned i;
register int length;
register xReq *req;
- register long rlen;
+ unsigned long rlen;
LockDisplay(dpy);
GetEmptyReq (ListExtensions, req);
@@ -51,16 +54,17 @@ char **XListExtensions(
}
if (rep.nExtensions) {
- list = (char **) Xmalloc (
- (unsigned)(rep.nExtensions * sizeof (char *)));
- rlen = rep.length << 2;
- ch = (char *) Xmalloc ((unsigned) rlen + 1);
+ list = Xmalloc (rep.nExtensions * sizeof (char *));
+ if (rep.length < (LONG_MAX >> 2)) {
+ rlen = rep.length << 2;
+ ch = Xmalloc (rlen + 1);
/* +1 to leave room for last null-terminator */
+ }
if ((!list) || (!ch)) {
if (list) Xfree((char *) list);
if (ch) Xfree((char *) ch);
- _XEatData(dpy, (unsigned long) rlen);
+ _XEatDataWords(dpy, rep.length);
UnlockDisplay(dpy);
SyncHandle();
return (char **) NULL;
@@ -70,17 +74,21 @@ char **XListExtensions(
/*
* unpack into null terminated strings.
*/
+ chend = ch + (rlen + 1);
length = *ch;
for (i = 0; i < rep.nExtensions; i++) {
- list[i] = ch+1; /* skip over length */
- ch += length + 1; /* find next length ... */
- length = *ch;
- *ch = '\0'; /* and replace with null-termination */
+ if (ch + length < chend) {
+ list[i] = ch+1; /* skip over length */
+ ch += length + 1; /* find next length ... */
+ length = *ch;
+ *ch = '\0'; /* and replace with null-termination */
+ count++;
+ } else
+ list[i] = NULL;
}
}
- else list = (char **) NULL;
- *nextensions = rep.nExtensions;
+ *nextensions = count;
UnlockDisplay(dpy);
SyncHandle();
return (list);
diff --git a/nx-X11/lib/X11/ModMap.c b/nx-X11/lib/X11/ModMap.c
index c99bfdd5f..122ca80db 100644
--- a/nx-X11/lib/X11/ModMap.c
+++ b/nx-X11/lib/X11/ModMap.c
@@ -28,6 +28,7 @@ in this Software without prior written authorization from The Open Group.
#include <config.h>
#endif
#include "Xlibint.h"
+#include <limits.h>
XModifierKeymap *
XGetModifierMapping(register Display *dpy)
@@ -41,13 +42,17 @@ XGetModifierMapping(register Display *dpy)
GetEmptyReq(GetModifierMapping, req);
(void) _XReply (dpy, (xReply *)&rep, 0, xFalse);
- nbytes = (unsigned long)rep.length << 2;
- res = (XModifierKeymap *) Xmalloc(sizeof (XModifierKeymap));
- if (res) res->modifiermap = (KeyCode *) Xmalloc ((unsigned) nbytes);
+ if (rep.length < (LONG_MAX >> 2)) {
+ nbytes = (unsigned long)rep.length << 2;
+ res = Xmalloc(sizeof (XModifierKeymap));
+ if (res)
+ res->modifiermap = Xmalloc (nbytes);
+ } else
+ res = NULL;
if ((! res) || (! res->modifiermap)) {
if (res) Xfree((char *) res);
res = (XModifierKeymap *) NULL;
- _XEatData(dpy, nbytes);
+ _XEatDataWords(dpy, rep.length);
} else {
_XReadPad(dpy, (char *) res->modifiermap, (long) nbytes);
res->max_keypermod = rep.numKeyPerModifier;
diff --git a/nx-X11/lib/X11/OpenDis.c b/nx-X11/lib/X11/OpenDis.c
index a17b8b161..4036572a8 100644
--- a/nx-X11/lib/X11/OpenDis.c
+++ b/nx-X11/lib/X11/OpenDis.c
@@ -549,9 +549,7 @@ fallback_success:
/*
* Now iterate down setup information.....
*/
- dpy->pixmap_format =
- (ScreenFormat *)Xmalloc(
- (unsigned) (dpy->nformats *sizeof(ScreenFormat)));
+ dpy->pixmap_format = Xcalloc(dpy->nformats, sizeof(ScreenFormat));
if (dpy->pixmap_format == NULL) {
OutOfMemory (dpy, setup);
return(NULL);
@@ -579,8 +577,7 @@ fallback_success:
/*
* next the Screen structures.
*/
- dpy->screens =
- (Screen *)Xmalloc((unsigned) dpy->nscreens*sizeof(Screen));
+ dpy->screens = Xcalloc(dpy->nscreens, sizeof(Screen));
if (dpy->screens == NULL) {
OutOfMemory (dpy, setup);
return(NULL);
@@ -622,8 +619,7 @@ fallback_success:
/*
* lets set up the depth structures.
*/
- sp->depths = (Depth *)Xmalloc(
- (unsigned)sp->ndepths*sizeof(Depth));
+ sp->depths = Xcalloc(sp->ndepths, sizeof(Depth));
if (sp->depths == NULL) {
OutOfMemory (dpy, setup);
return(NULL);
@@ -645,8 +641,7 @@ fallback_success:
dp->nvisuals = u.dp->nVisuals;
u.dp = (xDepth *) (((char *) u.dp) + sz_xDepth);
if (dp->nvisuals > 0) {
- dp->visuals =
- (Visual *)Xmalloc((unsigned)dp->nvisuals*sizeof(Visual));
+ dp->visuals = Xcalloc(dp->nvisuals, sizeof(Visual));
if (dp->visuals == NULL) {
OutOfMemory (dpy, setup);
return(NULL);
@@ -788,7 +783,7 @@ fallback_success:
dpy->xdefaults[reply.nItems] = '\0';
}
else if (reply.propertyType != None)
- _XEatData(dpy, reply.nItems * (reply.format >> 3));
+ _XEatDataWords(dpy, reply.length);
}
#if !USE_XCB
DeqAsyncHandler(dpy, &async);
diff --git a/nx-X11/lib/X11/QuColors.c b/nx-X11/lib/X11/QuColors.c
index e51375fa0..a8bc8837b 100644
--- a/nx-X11/lib/X11/QuColors.c
+++ b/nx-X11/lib/X11/QuColors.c
@@ -37,9 +37,7 @@ XQueryColors(
int ncolors)
{
register int i;
- xrgb *color;
xQueryColorsReply rep;
- long nbytes;
register xQueryColorsReq *req;
LockDisplay(dpy);
@@ -53,8 +51,9 @@ XQueryColors(
/* XXX this isn't very efficient */
if (_XReply(dpy, (xReply *) &rep, 0, xFalse) != 0) {
- if ((color = (xrgb *)
- Xmalloc((unsigned) (nbytes = (long) ncolors * SIZEOF(xrgb))))) {
+ unsigned long nbytes = (long) ncolors * SIZEOF(xrgb);
+ xrgb *color = Xmalloc(nbytes);
+ if (color != NULL) {
_XRead(dpy, (char *) color, nbytes);
@@ -68,7 +67,8 @@ XQueryColors(
}
Xfree((char *)color);
}
- else _XEatData(dpy, (unsigned long) nbytes);
+ else
+ _XEatDataWords(dpy, rep.length);
}
UnlockDisplay(dpy);
SyncHandle();
diff --git a/nx-X11/lib/X11/QuTree.c b/nx-X11/lib/X11/QuTree.c
index 3cea282fa..8da2ae261 100644
--- a/nx-X11/lib/X11/QuTree.c
+++ b/nx-X11/lib/X11/QuTree.c
@@ -37,7 +37,7 @@ Status XQueryTree (
Window **children, /* RETURN */
unsigned int *nchildren) /* RETURN */
{
- long nbytes;
+ unsigned long nbytes;
xQueryTreeReply rep;
register xResourceReq *req;
@@ -52,14 +52,14 @@ Status XQueryTree (
*children = (Window *) NULL;
if (rep.nChildren != 0) {
nbytes = rep.nChildren * sizeof(Window);
- *children = (Window *) Xmalloc((unsigned) nbytes);
- nbytes = rep.nChildren << 2;
+ *children = Xmalloc(nbytes);
if (! *children) {
- _XEatData(dpy, (unsigned long) nbytes);
+ _XEatDataWords(dpy, rep.length);
UnlockDisplay(dpy);
SyncHandle();
return (0);
}
+ nbytes = rep.nChildren << 2;
_XRead32 (dpy, (long *) *children, nbytes);
}
*parent = rep.parent;
diff --git a/nx-X11/lib/X11/XKBExtDev.c b/nx-X11/lib/X11/XKBExtDev.c
index de5570337..47b94a3aa 100644
--- a/nx-X11/lib/X11/XKBExtDev.c
+++ b/nx-X11/lib/X11/XKBExtDev.c
@@ -181,6 +181,9 @@ int tmp;
return tmp;
}
if (rep->nBtnsWanted>0) {
+ if (((unsigned short) rep->firstBtnWanted + rep->nBtnsWanted)
+ >= devi->num_btns)
+ goto BAILOUT;
act= &devi->btn_acts[rep->firstBtnWanted];
bzero((char *)act,(rep->nBtnsWanted*sizeof(XkbAction)));
}
@@ -190,6 +193,9 @@ int tmp;
goto BAILOUT;
if (rep->nBtnsRtrn>0) {
int size;
+ if (((unsigned short) rep->firstBtnRtrn + rep->nBtnsRtrn)
+ >= devi->num_btns)
+ goto BAILOUT;
act= &devi->btn_acts[rep->firstBtnRtrn];
size= rep->nBtnsRtrn*SIZEOF(xkbActionWireDesc);
if (!_XkbCopyFromReadBuffer(&buf,(char *)act,size))
diff --git a/nx-X11/lib/X11/XKBGeom.c b/nx-X11/lib/X11/XKBGeom.c
index 5ab51b682..1f9628bea 100644
--- a/nx-X11/lib/X11/XKBGeom.c
+++ b/nx-X11/lib/X11/XKBGeom.c
@@ -364,12 +364,16 @@ Status rtrn;
}
ol->num_points= olWire->nPoints;
}
- if (shapeWire->primaryNdx!=XkbNoShape)
+ if ((shapeWire->primaryNdx!=XkbNoShape) &&
+ (shapeWire->primaryNdx < shapeWire->nOutlines))
shape->primary= &shape->outlines[shapeWire->primaryNdx];
- else shape->primary= NULL;
- if (shapeWire->approxNdx!=XkbNoShape)
+ else
+ shape->primary= NULL;
+ if ((shapeWire->approxNdx!=XkbNoShape) &&
+ (shapeWire->approxNdx < shapeWire->nOutlines))
shape->approx= &shape->outlines[shapeWire->approxNdx];
- else shape->approx= NULL;
+ else
+ shape->approx= NULL;
XkbComputeShapeBounds(shape);
}
return Success;
@@ -615,6 +619,9 @@ XkbGeometryPtr geom;
if (status==Success)
status= _XkbReadGeomKeyAliases(&buf,geom,rep);
left= _XkbFreeReadBuffer(&buf);
+ if ((rep->baseColorNdx > geom->num_colors) ||
+ (rep->labelColorNdx > geom->num_colors))
+ status = BadLength;
if ((status!=Success) || left || buf.error) {
if (status==Success)
status= BadLength;
diff --git a/nx-X11/lib/X11/XKBGetMap.c b/nx-X11/lib/X11/XKBGetMap.c
index a38907671..391d7aa89 100644
--- a/nx-X11/lib/X11/XKBGetMap.c
+++ b/nx-X11/lib/X11/XKBGetMap.c
@@ -152,9 +152,12 @@ XkbClientMapPtr map;
map= xkb->map;
if (map->key_sym_map==NULL) {
register int offset;
+ int size = xkb->max_key_code + 1;
XkbSymMapPtr oldMap;
xkbSymMapWireDesc *newMap;
- map->key_sym_map= _XkbTypedCalloc((xkb->max_key_code+1),XkbSymMapRec);
+ if (((unsigned short)rep->firstKeySym + rep->nKeySyms) > size)
+ return BadLength;
+ map->key_sym_map= _XkbTypedCalloc(size,XkbSymMapRec);
if (map->key_sym_map==NULL)
return BadAlloc;
if (map->syms==NULL) {
@@ -210,6 +213,8 @@ XkbClientMapPtr map;
KeySym * newSyms;
int tmp;
+ if (((unsigned short)rep->firstKeySym + rep->nKeySyms) > map->num_syms)
+ return BadLength;
oldMap = &map->key_sym_map[rep->firstKeySym];
for (i=0;i<(int)rep->nKeySyms;i++,oldMap++) {
newMap= (xkbSymMapWireDesc *)
@@ -265,6 +270,10 @@ Status ret = Success;
symMap = &info->map->key_sym_map[rep->firstKeyAct];
for (i=0;i<(int)rep->nKeyActs;i++,symMap++) {
if (numDesc[i]==0) {
+ if ((i + rep->firstKeyAct) > (info->max_key_code + 1)) {
+ ret = BadLength;
+ goto done;
+ }
info->server->key_acts[i+rep->firstKeyAct]= 0;
}
else {
@@ -297,8 +306,10 @@ register int i;
xkbBehaviorWireDesc *wire;
if ( rep->totalKeyBehaviors>0 ) {
+ int size = xkb->max_key_code + 1;
+ if ( ((int) rep->firstKeyBehavior + rep->nKeyBehaviors) > size)
+ return BadLength;
if ( xkb->server->behaviors == NULL ) {
- int size = xkb->max_key_code+1;
xkb->server->behaviors = _XkbTypedCalloc(size,XkbBehavior);
if (xkb->server->behaviors==NULL)
return BadAlloc;
@@ -310,7 +321,7 @@ xkbBehaviorWireDesc *wire;
for (i=0;i<rep->totalKeyBehaviors;i++) {
wire= (xkbBehaviorWireDesc *)_XkbGetReadBufferPtr(buf,
SIZEOF(xkbBehaviorWireDesc));
- if (wire==NULL)
+ if (wire==NULL || wire->key >= size)
return BadLength;
xkb->server->behaviors[wire->key].type= wire->type;
xkb->server->behaviors[wire->key].data= wire->data;
@@ -352,8 +363,10 @@ register int i;
unsigned char *wire;
if ( rep->totalKeyExplicit>0 ) {
+ int size = xkb->max_key_code + 1;
+ if ( ((int) rep->firstKeyExplicit + rep->nKeyExplicit) > size)
+ return BadLength;
if ( xkb->server->explicit == NULL ) {
- int size = xkb->max_key_code+1;
xkb->server->explicit = _XkbTypedCalloc(size,unsigned char);
if (xkb->server->explicit==NULL)
return BadAlloc;
@@ -367,6 +380,8 @@ unsigned char *wire;
if (!wire)
return BadLength;
for (i=0;i<rep->totalKeyExplicit;i++,wire+=2) {
+ if (wire[0] > xkb->max_key_code || wire[1] > xkb->max_key_code)
+ return BadLength;
xkb->server->explicit[wire[0]]= wire[1];
}
}
@@ -380,6 +395,9 @@ register int i;
unsigned char *wire;
if ( rep->totalModMapKeys>0 ) {
+ if ( ((int)rep->firstModMapKey + rep->nModMapKeys) >
+ (xkb->max_key_code + 1))
+ return BadLength;
if ((xkb->map->modmap==NULL)&&
(XkbAllocClientMap(xkb,XkbModifierMapMask,0)!=Success)) {
return BadAlloc;
@@ -392,6 +410,8 @@ unsigned char *wire;
if (!wire)
return BadLength;
for (i=0;i<rep->totalModMapKeys;i++,wire+=2) {
+ if (wire[0] > xkb->max_key_code || wire[1] > xkb->max_key_code)
+ return BadLength;
xkb->map->modmap[wire[0]]= wire[1];
}
}
@@ -406,6 +426,9 @@ xkbVModMapWireDesc * wire;
XkbServerMapPtr srv;
if ( rep->totalVModMapKeys>0 ) {
+ if (((int) rep->firstVModMapKey + rep->nVModMapKeys)
+ > xkb->max_key_code + 1)
+ return BadLength;
if (((xkb->server==NULL)||(xkb->server->vmodmap==NULL))&&
(XkbAllocServerMap(xkb,XkbVirtualModMapMask,0)!=Success)) {
return BadAlloc;
@@ -462,6 +485,8 @@ unsigned mask;
if ( xkb->device_spec == XkbUseCoreKbd )
xkb->device_spec= rep->deviceID;
+ if ( rep->maxKeyCode < rep->minKeyCode )
+ return BadImplementation;
xkb->min_key_code = rep->minKeyCode;
xkb->max_key_code = rep->maxKeyCode;
diff --git a/nx-X11/lib/X11/XKBNames.c b/nx-X11/lib/X11/XKBNames.c
index 04cd6f3e3..c82b59e30 100644
--- a/nx-X11/lib/X11/XKBNames.c
+++ b/nx-X11/lib/X11/XKBNames.c
@@ -180,6 +180,8 @@ _XkbReadGetNamesReply( Display * dpy,
nKeys= xkb->max_key_code+1;
names->keys= _XkbTypedCalloc(nKeys,XkbKeyNameRec);
}
+ else if ( ((int)rep->firstKey + rep->nKeys) > xkb->max_key_code + 1)
+ goto BAILOUT;
if (names->keys!=NULL) {
if (!_XkbCopyFromReadBuffer(&buf,
(char *)&names->keys[rep->firstKey],
diff --git a/nx-X11/lib/X11/Xrm.c b/nx-X11/lib/X11/Xrm.c
index d88442c6e..818e72906 100644
--- a/nx-X11/lib/X11/Xrm.c
+++ b/nx-X11/lib/X11/Xrm.c
@@ -1087,13 +1087,15 @@ static void GetIncludeFile(
XrmDatabase db,
_Xconst char *base,
_Xconst char *fname,
- int fnamelen);
+ int fnamelen,
+ int depth);
static void GetDatabase(
XrmDatabase db,
_Xconst register char *str,
_Xconst char *filename,
- Bool doall)
+ Bool doall,
+ int depth)
{
char *rhs;
char *lhs, lhs_s[DEF_BUFF_SIZE];
@@ -1203,7 +1205,8 @@ static void GetDatabase(
} while (c != '"' && !is_EOL(bits));
/* must have an ending " */
if (c == '"')
- GetIncludeFile(db, filename, fname, str - len - fname);
+ GetIncludeFile(db, filename, fname, str - len - fname,
+ depth);
}
}
/* spin to next newline */
@@ -1544,7 +1547,7 @@ XrmPutLineResource(
{
if (!*pdb) *pdb = NewDatabase();
_XLockMutex(&(*pdb)->linfo);
- GetDatabase(*pdb, line, (char *)NULL, False);
+ GetDatabase(*pdb, line, (char *)NULL, False, 0);
_XUnlockMutex(&(*pdb)->linfo);
}
@@ -1556,7 +1559,7 @@ XrmGetStringDatabase(
db = NewDatabase();
_XLockMutex(&db->linfo);
- GetDatabase(db, data, (char *)NULL, True);
+ GetDatabase(db, data, (char *)NULL, True, 0);
_XUnlockMutex(&db->linfo);
return db;
}
@@ -1594,6 +1597,12 @@ ReadInFile(_Xconst char *filename)
*/
GetSizeOfFile(fd, size);
+ /* There might have been a problem trying to stat a file */
+ if (size == -1) {
+ close (fd);
+ return (char *)NULL;
+ }
+
if (!(filebuf = Xmalloc(size + 1))) { /* leave room for '\0' */
close(fd);
return (char *)NULL;
@@ -1627,7 +1636,8 @@ GetIncludeFile(
XrmDatabase db,
_Xconst char *base,
_Xconst char *fname,
- int fnamelen)
+ int fnamelen,
+ int depth)
{
int len;
char *str;
@@ -1635,6 +1645,8 @@ GetIncludeFile(
if (fnamelen <= 0 || fnamelen >= BUFSIZ)
return;
+ if (depth >= MAXDBDEPTH)
+ return;
if (*fname != '/' && base && (str = strrchr(base, '/'))) {
len = str - base + 1;
if (len + fnamelen >= BUFSIZ)
@@ -1648,7 +1660,7 @@ GetIncludeFile(
}
if (!(str = ReadInFile(realfname)))
return;
- GetDatabase(db, str, realfname, True);
+ GetDatabase(db, str, realfname, True, depth + 1);
Xfree(str);
}
@@ -1664,7 +1676,7 @@ XrmGetFileDatabase(
db = NewDatabase();
_XLockMutex(&db->linfo);
- GetDatabase(db, str, filename, True);
+ GetDatabase(db, str, filename, True, 0);
_XUnlockMutex(&db->linfo);
Xfree(str);
return db;
@@ -1688,7 +1700,7 @@ XrmCombineFileDatabase(
} else
db = NewDatabase();
_XLockMutex(&db->linfo);
- GetDatabase(db, str, filename, True);
+ GetDatabase(db, str, filename, True, 0);
_XUnlockMutex(&db->linfo);
Xfree(str);
if (!override)
diff --git a/nx-X11/lib/X11/XrmI.h b/nx-X11/lib/X11/XrmI.h
index a1615f4e5..63ed257ed 100644
--- a/nx-X11/lib/X11/XrmI.h
+++ b/nx-X11/lib/X11/XrmI.h
@@ -35,11 +35,13 @@ from The Open Group.
#include <nx-X11/Xos.h>
#include <sys/stat.h>
+#include <limits.h>
#define GetSizeOfFile(fd,size) \
{ \
struct stat status_buffer; \
- if ( (fstat((fd), &status_buffer)) == -1 ) \
+ if ( ((fstat((fd), &status_buffer)) == -1 ) || \
+ (status_buffer.st_size >= INT_MAX) ) \
size = -1; \
else \
size = status_buffer.st_size; \
diff --git a/nx-X11/lib/X11/cmsColNm.c b/nx-X11/lib/X11/cmsColNm.c
index 82ffab5f6..5f9724822 100644
--- a/nx-X11/lib/X11/cmsColNm.c
+++ b/nx-X11/lib/X11/cmsColNm.c
@@ -40,6 +40,7 @@
#include <sys/stat.h>
#include <stdio.h>
#include <ctype.h>
+#include <limits.h>
#define XK_LATIN1
#include <nx-X11/keysymdef.h>
#include "Cv.h"
@@ -542,7 +543,10 @@ stringSectionSize(
char *pBuf;
char *f1;
char *f2;
- int i;
+ size_t i;
+
+ unsigned int numEntries = 0;
+ unsigned int sectionSize = 0;
*pNumEntries = 0;
*pSectionSize = 0;
@@ -576,26 +580,37 @@ stringSectionSize(
return(XcmsFailure);
}
- (*pNumEntries)++;
+ numEntries++;
+ if (numEntries >= INT_MAX)
+ return(XcmsFailure);
- (*pSectionSize) += (i = strlen(f1)) + 1;
+ i = strlen(f1);
+ if (i >= INT_MAX - sectionSize)
+ return(XcmsFailure);
+ sectionSize += i + 1;
for (; i; i--, f1++) {
/* REMOVE SPACES FROM COUNT */
if (isspace(*f1)) {
- (*pSectionSize)--;
+ sectionSize--;
}
}
- (*pSectionSize) += (i = strlen(f2)) + 1;
+ i = strlen(f2);
+ if (i >= INT_MAX - sectionSize)
+ return(XcmsFailure);
+ sectionSize += i + 1;
for (; i; i--, f2++) {
/* REMOVE SPACES FROM COUNT */
if (isspace(*f2)) {
- (*pSectionSize)--;
+ sectionSize--;
}
}
}
+ *pNumEntries = (int) numEntries;
+ *pSectionSize = (int) sectionSize;
+
return(XcmsSuccess);
}
diff --git a/nx-X11/lib/X11/imLcPrs.c b/nx-X11/lib/X11/imLcPrs.c
index 4dbcbbed4..ad65da694 100644
--- a/nx-X11/lib/X11/imLcPrs.c
+++ b/nx-X11/lib/X11/imLcPrs.c
@@ -41,6 +41,8 @@ OR PERFORMANCE OF THIS SOFTWARE.
#include "Ximint.h"
#include <sys/stat.h>
#include <stdio.h>
+#include <limits.h>
+#include "pathmax.h"
#define XLC_BUFSIZE 256
@@ -56,6 +58,8 @@ extern int _Xmbstoutf8(
int len
);
+static void parsestringfile(FILE *fp, Xim im, int depth);
+
/*
* Parsing File Format:
*
@@ -304,9 +308,9 @@ static char*
TransFileName(Xim im, char *name)
{
char *home = NULL, *lcCompose = NULL;
- char dir[XLC_BUFSIZE];
- char *i = name, *ret, *j;
- int l = 0;
+ char dir[XLC_BUFSIZE] = "";
+ char *i = name, *ret = NULL, *j;
+ size_t l = 0;
while (*i) {
if (*i == '%') {
@@ -316,29 +320,51 @@ TransFileName(Xim im, char *name)
l++;
break;
case 'H':
- home = getenv("HOME");
- if (home)
- l += strlen(home);
+ if (home == NULL)
+ home = getenv("HOME");
+ if (home) {
+ size_t Hsize = strlen(home);
+ if (Hsize > PATH_MAX)
+ /* your home directory length is ridiculous */
+ goto end;
+ l += Hsize;
+ }
break;
case 'L':
- lcCompose = _XlcFileName(im->core.lcd, COMPOSE_FILE);
- if (lcCompose)
- l += strlen(lcCompose);
+ if (lcCompose == NULL)
+ lcCompose = _XlcFileName(im->core.lcd, COMPOSE_FILE);
+ if (lcCompose) {
+ size_t Lsize = strlen(lcCompose);
+ if (Lsize > PATH_MAX)
+ /* your compose pathname length is ridiculous */
+ goto end;
+ l += Lsize;
+ }
break;
case 'S':
- xlocaledir(dir, XLC_BUFSIZE);
- l += strlen(dir);
+ if (dir[0] == '\0')
+ xlocaledir(dir, XLC_BUFSIZE);
+ if (dir[0]) {
+ size_t Ssize = strlen(dir);
+ if (Ssize > PATH_MAX)
+ /* your locale directory path length is ridiculous */
+ goto end;
+ l += Ssize;
+ }
break;
}
} else {
l++;
}
i++;
+ if (l > PATH_MAX)
+ /* your expanded path length is ridiculous */
+ goto end;
}
j = ret = Xmalloc(l+1);
if (ret == NULL)
- return ret;
+ goto end;
i = name;
while (*i) {
if (*i == '%') {
@@ -357,7 +383,6 @@ TransFileName(Xim im, char *name)
if (lcCompose) {
strcpy(j, lcCompose);
j += strlen(lcCompose);
- Xfree(lcCompose);
}
break;
case 'S':
@@ -371,6 +396,8 @@ TransFileName(Xim im, char *name)
}
}
*j = '\0';
+end:
+ Xfree(lcCompose);
return ret;
}
@@ -422,7 +449,8 @@ static int
parseline(
FILE *fp,
Xim im,
- char* tokenbuf)
+ char* tokenbuf,
+ int depth)
{
int token;
DTModifier modifier_mask;
@@ -469,11 +497,13 @@ parseline(
goto error;
if ((filename = TransFileName(im, tokenbuf)) == NULL)
goto error;
+ if (++depth > 100)
+ goto error;
infp = _XFopenFile(filename, "r");
Xfree(filename);
if (infp == NULL)
goto error;
- _XimParseStringFile(infp, im);
+ parsestringfile(infp, im, depth);
fclose(infp);
return (0);
} else if ((token == KEY) && (strcmp("None", tokenbuf) == 0)) {
@@ -667,17 +697,28 @@ _XimParseStringFile(
FILE *fp,
Xim im)
{
+ parsestringfile(fp, im, 0);
+}
+
+static void
+parsestringfile(
+ FILE *fp,
+ Xim im,
+ int depth)
+{
char tb[8192];
char* tbp;
struct stat st;
if (fstat (fileno (fp), &st) != -1) {
unsigned long size = (unsigned long) st.st_size;
+ if (st.st_size >= INT_MAX)
+ return;
if (size <= sizeof tb) tbp = tb;
else tbp = malloc (size);
if (tbp != NULL) {
- while (parseline(fp, im, tbp) >= 0) {}
+ while (parseline(fp, im, tbp, depth) >= 0) {}
if (tbp != tb) free (tbp);
}
}
diff --git a/nx-X11/lib/X11/imTrX.c b/nx-X11/lib/X11/imTrX.c
index eba328057..2b5455f1b 100644
--- a/nx-X11/lib/X11/imTrX.c
+++ b/nx-X11/lib/X11/imTrX.c
@@ -372,7 +372,7 @@ _XimXGetReadData(
XFree(prop_ret);
return False;
}
- if (buf_len >= length) {
+ if (buf_len >= (int)nitems) {
(void)memcpy(buf, prop_ret, (int)nitems);
*ret_len = (int)nitems;
if (bytes_after_ret > 0) {
diff --git a/nx-X11/lib/X11/lcFile.c b/nx-X11/lib/X11/lcFile.c
index 50159f64b..8c2e7c062 100644
--- a/nx-X11/lib/X11/lcFile.c
+++ b/nx-X11/lib/X11/lcFile.c
@@ -54,29 +54,7 @@
#define XLC_BUFSIZE 256
-#ifndef X_NOT_POSIX
-#ifdef _POSIX_SOURCE
-#include <limits.h>
-#else
-#define _POSIX_SOURCE
-#include <limits.h>
-#undef _POSIX_SOURCE
-#endif
-#endif
-#ifndef PATH_MAX
-#ifdef WIN32
-#define PATH_MAX 512
-#else
-#include <sys/param.h>
-#endif
-#ifndef PATH_MAX
-#ifdef MAXPATHLEN
-#define PATH_MAX MAXPATHLEN
-#else
-#define PATH_MAX 1024
-#endif
-#endif
-#endif
+#include "pathmax.h"
#define NUM_LOCALEDIR 64
diff --git a/nx-X11/lib/X11/pathmax.h b/nx-X11/lib/X11/pathmax.h
new file mode 100644
index 000000000..ffec295e0
--- /dev/null
+++ b/nx-X11/lib/X11/pathmax.h
@@ -0,0 +1,82 @@
+
+/***********************************************************
+
+Copyright 1987, 1988, 1998 The Open Group
+
+Permission to use, copy, modify, distribute, and sell this software and its
+documentation for any purpose is hereby granted without fee, provided that
+the above copyright notice appear in all copies and that both that
+copyright notice and this permission notice appear in supporting
+documentation.
+
+The above copyright notice and 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
+OPEN GROUP 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.
+
+Except as contained in this notice, the name of The Open Group shall not be
+used in advertising or otherwise to promote the sale, use or other dealings
+in this Software without prior written authorization from The Open Group.
+
+
+Copyright 1987, 1988 by Digital Equipment Corporation, Maynard, Massachusetts.
+
+ All Rights Reserved
+
+Permission to use, copy, modify, and distribute this software and its
+documentation for any purpose and without fee is hereby granted,
+provided that the above copyright notice appear in all copies and that
+both that copyright notice and this permission notice appear in
+supporting documentation, and that the name of Digital not be
+used in advertising or publicity pertaining to distribution of the
+software without specific, written prior permission.
+
+DIGITAL DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING
+ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL
+DIGITAL BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR
+ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
+WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION,
+ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
+SOFTWARE.
+
+******************************************************************/
+
+/*
+ * Provides a single definition of PATH_MAX instead of replicating this mess
+ * in multiple files
+ */
+
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif
+#include <nx-X11/Xos.h>
+
+#ifndef X_NOT_POSIX
+#ifdef _POSIX_SOURCE
+#include <limits.h>
+#else
+#define _POSIX_SOURCE
+#include <limits.h>
+#undef _POSIX_SOURCE
+#endif
+#endif
+#ifndef PATH_MAX
+#ifdef WIN32
+#define PATH_MAX 512
+#else
+#include <sys/param.h>
+#endif
+#ifndef PATH_MAX
+#ifdef MAXPATHLEN
+#define PATH_MAX MAXPATHLEN
+#else
+#define PATH_MAX 1024
+#endif
+#endif
+#endif
+