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Fixed crash when reading malformed tags.

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This commit is contained in:
Andrey Kiselev 2005-09-28 12:10:22 +00:00
parent 7e352b10d6
commit ad6776b90d
1 changed files with 3 additions and 3 deletions
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6
tools/tiffdump.c
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@ -1,4 +1,4 @@
/* $Id: tiffdump.c,v 1.10 2005-09-13 14:09:10 dron Exp $ */ /* $Id: tiffdump.c,v 1.11 2005-09-28 12:10:22 dron Exp $ */
/* /*
* Copyright (c) 1988-1997 Sam Leffler * Copyright (c) 1988-1997 Sam Leffler
@ -702,8 +702,8 @@ TIFFFetchData(int fd, TIFFDirEntry* dir, void* cp)
w = (dir->tdir_type < NWIDTHS ? datawidth[dir->tdir_type] : 0); w = (dir->tdir_type < NWIDTHS ? datawidth[dir->tdir_type] : 0);
cc = dir->tdir_count * w; cc = dir->tdir_count * w;
if (lseek(fd, (off_t)dir->tdir_offset, 0) == (off_t)dir->tdir_offset && if (lseek(fd, (off_t)dir->tdir_offset, 0) != (off_t)-1
read(fd, cp, cc) == cc) { && read(fd, cp, cc) != -1) {
if (swabflag) { if (swabflag) {
switch (dir->tdir_type) { switch (dir->tdir_type) {
case TIFF_SHORT: case TIFF_SHORT: