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Fix divide-by-zero in readSeparateStripsIntoBuffer():
http://bugzilla.maptools.org/show_bug.cgi?id=2619
2016-12-03 Even Rouault <even.rouault at spatialys.com>
* tools/tiffcrop.c: fix integer division by zero when BitsPerSample is
missing.
Reported by Agostina Sarubo.
Fixes http://bugzilla.maptools.org/show_bug.cgi?id=2619
/cvs/maptools/cvsroot/libtiff/ChangeLog,v <-- ChangeLog
new revision: 1.1180; previous revision: 1.1179
/cvs/maptools/cvsroot/libtiff/tools/tiffcrop.c,v <-- tools/tiffcrop.c
new revision: 1.49; previous revision: 1.48
Index: libtiff/tools/tiffcrop.c
===================================================================
RCS file: /cvs/maptools/cvsroot/libtiff/tools/tiffcrop.c,v
retrieving revision 1.48
retrieving revision 1.49
diff -u -r1.48 -r1.49
--- libtiff/tools/tiffcrop.c 3 Dec 2016 12:19:32 -0000 1.48
+++ libtiff/tools/tiffcrop.c 3 Dec 2016 13:00:04 -0000 1.49
@@ -1,4 +1,4 @@
-/* $Id: tiffcrop.c,v 1.48 2016-12-03 12:19:32 erouault Exp $ */
+/* $Id: tiffcrop.c,v 1.49 2016-12-03 13:00:04 erouault Exp $ */
/* tiffcrop.c -- a port of tiffcp.c extended to include manipulations of
* the image data through additional options listed below
@@ -1164,7 +1164,7 @@
tdata_t obuf;
(void) TIFFGetFieldDefaulted(out, TIFFTAG_ROWSPERSTRIP, &rowsperstrip);
- (void) TIFFGetField(out, TIFFTAG_BITSPERSAMPLE, &bps);
+ (void) TIFFGetFieldDefaulted(out, TIFFTAG_BITSPERSAMPLE, &bps);
bytes_per_sample = (bps + 7) / 8;
if( width == 0 ||
(uint32)bps * (uint32)spp > TIFF_UINT32_MAX / width ||
@@ -4760,7 +4760,7 @@
int i, bytes_per_sample, bytes_per_pixel, shift_width, result = 1;
uint32 j;
int32 bytes_read = 0;
- uint16 bps, planar;
+ uint16 bps = 0, planar;
uint32 nstrips;
uint32 strips_per_sample;
uint32 src_rowsize, dst_rowsize, rows_processed, rps;
@@ -4780,7 +4780,7 @@
}
memset (srcbuffs, '\0', sizeof(srcbuffs));
- TIFFGetField(in, TIFFTAG_BITSPERSAMPLE, &bps);
+ TIFFGetFieldDefaulted(in, TIFFTAG_BITSPERSAMPLE, &bps);
TIFFGetFieldDefaulted(in, TIFFTAG_PLANARCONFIG, &planar);
TIFFGetFieldDefaulted(in, TIFFTAG_ROWSPERSTRIP, &rps);
if (rps > length)
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