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08f059c3b5
openbsd-ports/x11/lesstif/patches/patch-lib_Xm_LTXpm_c
pvalchev 8f7192dd7a sync xpm with XF4; by matthieu and me
2004-09-01 22:57:36 +00:00

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$OpenBSD: patch-lib_Xm_LTXpm_c,v 1.1 2004/09/01 22:57:36 pvalchev Exp $
--- lib/Xm/LTXpm.c.orig Fri Sep 22 22:35:11 2000
+++ lib/Xm/LTXpm.c Wed Sep 1 20:33:45 2004
@@ -53,7 +53,7 @@ int _LtxpmParseDataAndCreate(Display *di
_LtXpmAttributes *attributes);
/* 3.2 backward compatibility code */
-LFUNC(CreateOldColorTable, int, (_LtXpmColor *ct, int ncolors,
+LFUNC(CreateOldColorTable, int, (_LtXpmColor *ct, unsigned int ncolors,
_LtXpmColor ***oldct));
LFUNC(FreeOldColorTable, void, (_LtXpmColor **colorTable, int ncolors));
@@ -64,12 +64,15 @@ LFUNC(FreeOldColorTable, void, (_LtXpmCo
static int
CreateOldColorTable(ct, ncolors, oldct)
_LtXpmColor *ct;
- int ncolors;
+ unsigned int ncolors;
_LtXpmColor ***oldct;
{
_LtXpmColor **colorTable, **color;
int a;
+ if (ncolors >= SIZE_MAX / sizeof(_LtXpmColor *))
+ return _LtXpmNoMemory;
+
colorTable = (_LtXpmColor **) _LtXpmMalloc(ncolors * sizeof(_LtXpmColor *));
if (!colorTable) {
*oldct = NULL;
@@ -2290,6 +2293,9 @@ _LtXpmCreateImageFromXpmImage(display, i
ErrorStatus = _LtXpmSuccess;
+ if (image->ncolors >= SIZE_MAX / sizeof(Pixel))
+ return (_LtXpmNoMemory);
+
/* malloc pixels index tables */
image_pixels = (Pixel *) _LtXpmMalloc(sizeof(Pixel) * image->ncolors);
if (!image_pixels)
@@ -2462,6 +2468,8 @@ CreateXImage(display, visual, depth, for
return (_LtXpmNoMemory);
#if !defined(FOR_MSW) && !defined(AMIGA)
+ if (height != 0 && (*image_return)->bytes_per_line >= SIZE_MAX / height)
+ return _LtXpmNoMemory;
/* now that bytes_per_line must have been set properly alloc data */
(*image_return)->data =
(char *) _LtXpmMalloc((*image_return)->bytes_per_line * height);
@@ -3532,6 +3540,9 @@ _LtxpmParseDataAndCreate(display, data,
_LtxpmGetCmt(data, &colors_cmt);
/* malloc pixels index tables */
+ if (ncolors >= SIZE_MAX / sizeof(Pixel))
+ return _LtXpmNoMemory;
+
image_pixels = (Pixel *) _LtXpmMalloc(sizeof(Pixel) * ncolors);
if (!image_pixels)
RETURN(_LtXpmNoMemory);
@@ -3790,8 +3801,9 @@ ParseAndPutPixels(
}
obm = SelectObject(*dc, image->bitmap);
#endif
+ if (ncolors > 256)
+ return (_LtXpmFileInvalid);
-
memset((char *)colidx, 0, 256 * sizeof(short));
for (a = 0; a < ncolors; a++)
colidx[(unsigned char)colorTable[a].string[0]] = a + 1;
@@ -3895,6 +3907,9 @@ if (cidx[f]) _LtXpmFree(cidx[f]);}
char *s;
char buf[BUFSIZ];
+ if (cpp >= sizeof(buf))
+ return (_LtXpmFileInvalid);
+
buf[cpp] = '\0';
if (USE_HASHTABLE) {
xpmHashAtom *slot;
@@ -4301,7 +4316,7 @@ _LtxpmGetCmt(mdata, cmt)
{
if (!mdata->type)
*cmt = NULL;
- else if (mdata->CommentLength) {
+ else if (mdata->CommentLength != 0 && mdata->CommentLength < SIZE_MAX - 1) {
*cmt = (char *) _LtXpmMalloc(mdata->CommentLength + 1);
strncpy(*cmt, mdata->Comment, mdata->CommentLength);
(*cmt)[mdata->CommentLength] = '\0';
@@ -4511,7 +4526,7 @@ HashTableGrows(table)
xpmHashTable *table;
{
xpmHashAtom *atomTable = table->atomTable;
- int size = table->size;
+ unsigned int size = table->size;
xpmHashAtom *t, *p;
int i;
int oldSize = size;
@@ -4520,6 +4535,8 @@ HashTableGrows(table)
HASH_TABLE_GROWS
table->size = size;
table->limit = size / 3;
+ if (size >= SIZE_MAX / sizeof(*atomTable))
+ return (_LtXpmNoMemory);
atomTable = (xpmHashAtom *) _LtXpmMalloc(size * sizeof(*atomTable));
if (!atomTable)
return (_LtXpmNoMemory);
@@ -4580,6 +4597,8 @@ _LtxpmHashTableInit(table)
table->size = INITIAL_HASH_SIZE;
table->limit = table->size / 3;
table->used = 0;
+ if (table->size >= SIZE_MAX / sizeof(*atomTable))
+ return (_LtXpmNoMemory);
atomTable = (xpmHashAtom *) _LtXpmMalloc(table->size * sizeof(*atomTable));
if (!atomTable)
return (_LtXpmNoMemory);
@@ -4900,7 +4919,7 @@ _LtxpmParseValues(data, width, height, n
unsigned int *extensions;
{
unsigned int l;
- char buf[BUFSIZ];
+ char buf[BUFSIZ + 1];
if (!data->format) { /* XPM 2 or 3 */
@@ -5009,10 +5028,10 @@ _LtxpmParseColors(data, ncolors, cpp, co
_LtXpmColor **colorTablePtr;
xpmHashTable *hashtable;
{
- unsigned int key, l, a, b;
+ unsigned int key, l, a, b, len;
unsigned int curkey; /* current color key */
unsigned int lastwaskey; /* key read */
- char buf[BUFSIZ];
+ char buf[BUFSIZ+1];
char curbuf[BUFSIZ]; /* current buffer */
char **sptr, *s;
_LtXpmColor *color;
@@ -5020,6 +5039,8 @@ _LtxpmParseColors(data, ncolors, cpp, co
char **defaults;
int ErrorStatus;
+ if (ncolors >= SIZE_MAX / sizeof(_LtXpmColor))
+ return (_LtXpmNoMemory);
colorTable = (_LtXpmColor *) _LtXpmCalloc(ncolors, sizeof(_LtXpmColor));
if (!colorTable)
return (_LtXpmNoMemory);
@@ -5031,6 +5052,10 @@ _LtxpmParseColors(data, ncolors, cpp, co
/*
* read pixel value
*/
+ if (cpp >= SIZE_MAX - 1) {
+ _LtxpmFreeColorTable(colorTable, ncolors);
+ return (_LtXpmNoMemory);
+ }
color->string = (char *) _LtXpmMalloc(cpp + 1);
if (!color->string) {
_LtxpmFreeColorTable(colorTable, ncolors);
@@ -5068,13 +5093,14 @@ _LtxpmParseColors(data, ncolors, cpp, co
}
if (!lastwaskey && key < NKEYS) { /* open new key */
if (curkey) { /* flush string */
- s = (char *) _LtXpmMalloc(strlen(curbuf) + 1);
+ len = strlen(curbuf) + 1;
+ s = (char *) _LtXpmMalloc(len);
if (!s) {
_LtxpmFreeColorTable(colorTable, ncolors);
return (_LtXpmNoMemory);
}
defaults[curkey] = s;
- strcpy(s, curbuf);
+ memcpy(s, curbuf, len);
}
curkey = key + 1; /* set new key */
*curbuf = '\0'; /* reset curbuf */
@@ -5085,9 +5111,9 @@ _LtxpmParseColors(data, ncolors, cpp, co
return (_LtXpmFileInvalid);
}
if (!lastwaskey)
- strcat(curbuf, " "); /* append space */
+ strlcat(curbuf, " ", sizeof(curbuf)); /* append space */
buf[l] = '\0';
- strcat(curbuf, buf);/* append buf */
+ strlcat(curbuf, buf, sizeof(curbuf));/* append buf */
lastwaskey = 0;
}
}
@@ -5095,12 +5121,13 @@ _LtxpmParseColors(data, ncolors, cpp, co
_LtxpmFreeColorTable(colorTable, ncolors);
return (_LtXpmFileInvalid);
}
- s = defaults[curkey] = (char *) _LtXpmMalloc(strlen(curbuf) + 1);
+ len = strlen(curbuf) + 1;
+ s = defaults[curkey] = (char *) _LtXpmMalloc(len);
if (!s) {
_LtxpmFreeColorTable(colorTable, ncolors);
return (_LtXpmNoMemory);
}
- strcpy(s, curbuf);
+ memcpy(s, curbuf, len);
}
} else { /* XPM 1 */
/* get to the beginning of the first string */
@@ -5113,6 +5140,10 @@ _LtxpmParseColors(data, ncolors, cpp, co
/*
* read pixel value
*/
+ if (cpp >= SIZE_MAX - 1) {
+ _LtxpmFreeColorTable(colorTable, ncolors);
+ return (_LtXpmNoMemory);
+ }
color->string = (char *) _LtXpmMalloc(cpp + 1);
if (!color->string) {
_LtxpmFreeColorTable(colorTable, ncolors);
@@ -5141,16 +5172,17 @@ _LtxpmParseColors(data, ncolors, cpp, co
*curbuf = '\0'; /* init curbuf */
while ((l = _LtxpmNextWord(data, buf, BUFSIZ))) {
if (*curbuf != '\0')
- strcat(curbuf, " ");/* append space */
+ strlcat(curbuf, " ", sizeof(curbuf));/* append space */
buf[l] = '\0';
- strcat(curbuf, buf); /* append buf */
+ strlcat(curbuf, buf, sizeof(curbuf)); /* append buf */
}
- s = (char *) _LtXpmMalloc(strlen(curbuf) + 1);
+ len = strlen(curbuf) + 1;
+ s = (char *) _LtXpmMalloc(len);
if (!s) {
_LtxpmFreeColorTable(colorTable, ncolors);
return (_LtXpmNoMemory);
}
- strcpy(s, curbuf);
+ memcpy(s, curbuf, len);
color->c_color = s;
*curbuf = '\0'; /* reset curbuf */
if (a < ncolors - 1)
@@ -5175,6 +5207,9 @@ ParsePixels(data, width, height, ncolors
unsigned int *iptr, *iptr2;
unsigned int a, x, y;
+ if ((height > 0 && width >= SIZE_MAX / height) ||
+ width * height >= SIZE_MAX / sizeof(unsigned int))
+ return _LtXpmNoMemory;
#ifndef FOR_MSW
iptr2 = (unsigned int *) _LtXpmMalloc(sizeof(unsigned int) * width * height);
#else
@@ -5198,6 +5233,9 @@ ParsePixels(data, width, height, ncolors
{
unsigned short colidx[256];
+ if (ncolors > 256)
+ return (_LtXpmFileInvalid);
+
memset((char *)colidx, 0, 256 * sizeof(short));
for (a = 0; a < ncolors; a++)
colidx[(unsigned char)colorTable[a].string[0]] = a + 1;
@@ -5275,6 +5313,9 @@ if (cidx[f]) _LtXpmFree(cidx[f]);}
char *s;
char buf[BUFSIZ];
+ if (cpp >= sizeof(buf))
+ return (_LtXpmFileInvalid);
+
buf[cpp] = '\0';
if (USE_HASHTABLE) {
xpmHashAtom *slot;
@@ -5758,7 +5799,8 @@ LFUNC(MSWGetImagePixels, int, (Display *
LFUNC(ScanTransparentColor, int, (_LtXpmColor *color, unsigned int cpp,
_LtXpmAttributes *attributes));
-LFUNC(ScanOtherColors, int, (Display *display, _LtXpmColor *colors, int ncolors,
+LFUNC(ScanOtherColors, int, (Display *display, _LtXpmColor *colors,
+ unsigned int ncolors,
Pixel *pixels, unsigned int mask,
unsigned int cpp, _LtXpmAttributes *attributes));
@@ -5883,11 +5925,17 @@ _LtXpmCreateXpmImageFromImage(display, i
else
cpp = 0;
+ if ((height > 0 && width >= SIZE_MAX / height) ||
+ width * height >= SIZE_MAX / sizeof(unsigned int))
+ RETURN(_LtXpmNoMemory);
pmap.pixelindex =
(unsigned int *) _LtXpmCalloc(width * height, sizeof(unsigned int));
if (!pmap.pixelindex)
RETURN(_LtXpmNoMemory);
+ if (pmap.size >= SIZE_MAX / sizeof(Pixel))
+ RETURN(_LtXpmNoMemory);
+
pmap.pixels = (Pixel *) _LtXpmMalloc(sizeof(Pixel) * pmap.size);
if (!pmap.pixels)
RETURN(_LtXpmNoMemory);
@@ -5953,6 +6001,8 @@ _LtXpmCreateXpmImageFromImage(display, i
* color
*/
+ if (pmap.ncolors >= SIZE_MAX / sizeof(_LtXpmColor))
+ RETURN(_LtXpmNoMemory);
colorTable = (_LtXpmColor *) _LtXpmCalloc(pmap.ncolors, sizeof(_LtXpmColor));
if (!colorTable)
RETURN(_LtXpmNoMemory);
@@ -6011,6 +6061,8 @@ ScanTransparentColor(color, cpp, attribu
/* first get a character string */
a = 0;
+ if (cpp >= SIZE_MAX - 1)
+ return (_LtXpmNoMemory);
if (!(s = color->string = (char *) _LtXpmMalloc(cpp + 1)))
return (_LtXpmNoMemory);
*s++ = printable[c = a % MAXPRINTABLE];
@@ -6058,7 +6110,7 @@ static int
ScanOtherColors(display, colors, ncolors, pixels, mask, cpp, attributes)
Display *display;
_LtXpmColor *colors;
- int ncolors;
+ unsigned int ncolors;
Pixel *pixels;
unsigned int mask;
unsigned int cpp;
@@ -6102,6 +6154,8 @@ ScanOtherColors(display, colors, ncolors
}
/* first get character strings and rgb values */
+ if (ncolors >= SIZE_MAX / sizeof(XColor) || cpp >= SIZE_MAX - 1)
+ return (_LtXpmNoMemory);
xcolors = (XColor *) _LtXpmMalloc(sizeof(XColor) * ncolors);
if (!xcolors)
return (_LtXpmNoMemory);
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