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