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tif_dirread.c
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/* $Id: tif_dirread.c,v 1.174 2012-02-01 02:24:47 fwarmerdam Exp $ */
/*
* Copyright (c) 1988-1997 Sam Leffler
* Copyright (c) 1991-1997 Silicon Graphics, Inc.
*
* Permission to use, copy, modify, distribute, and sell this software and
* its documentation for any purpose is hereby granted without fee, provided
* that (i) the above copyright notices and this permission notice appear in
* all copies of the software and related documentation, and (ii) the names of
* Sam Leffler and Silicon Graphics may not be used in any advertising or
* publicity relating to the software without the specific, prior written
* permission of Sam Leffler and Silicon Graphics.
*
* THE SOFTWARE IS PROVIDED "AS-IS" AND WITHOUT WARRANTY OF ANY KIND,
* EXPRESS, IMPLIED OR OTHERWISE, INCLUDING WITHOUT LIMITATION, ANY
* WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.
*
* IN NO EVENT SHALL SAM LEFFLER OR SILICON GRAPHICS BE LIABLE FOR
* ANY SPECIAL, INCIDENTAL, INDIRECT OR CONSEQUENTIAL DAMAGES OF ANY KIND,
* OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
* WHETHER OR NOT ADVISED OF THE POSSIBILITY OF DAMAGE, AND ON ANY THEORY OF
* LIABILITY, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE
* OF THIS SOFTWARE.
*/
/*
* TIFF Library.
*
* Directory Read Support Routines.
*/
/* Suggested pending improvements:
* - add a field 'ignore' to the TIFFDirEntry structure, to flag status,
* eliminating current use of the IGNORE value, and therefore eliminating
* current irrational behaviour on tags with tag id code 0
* - add a field 'field_info' to the TIFFDirEntry structure, and set that with
* the pointer to the appropriate TIFFField structure early on in
* TIFFReadDirectory, so as to eliminate current possibly repetitive lookup.
*/
#include "tiffiop.h"
#define IGNORE 0 /* tag placeholder used below */
#define FAILED_FII ((uint32) -1)
#ifdef HAVE_IEEEFP
# define TIFFCvtIEEEFloatToNative(tif, n, fp)
# define TIFFCvtIEEEDoubleToNative(tif, n, dp)
#else
extern void TIFFCvtIEEEFloatToNative(TIFF*, uint32, float*);
extern void TIFFCvtIEEEDoubleToNative(TIFF*, uint32, double*);
#endif
enum TIFFReadDirEntryErr {
TIFFReadDirEntryErrOk = 0,
TIFFReadDirEntryErrCount = 1,
TIFFReadDirEntryErrType = 2,
TIFFReadDirEntryErrIo = 3,
TIFFReadDirEntryErrRange = 4,
TIFFReadDirEntryErrPsdif = 5,
TIFFReadDirEntryErrSizesan = 6,
TIFFReadDirEntryErrAlloc = 7,
};
static enum TIFFReadDirEntryErr TIFFReadDirEntryByte(TIFF* tif, TIFFDirEntry* direntry, uint8* value);
static enum TIFFReadDirEntryErr TIFFReadDirEntryShort(TIFF* tif, TIFFDirEntry* direntry, uint16* value);
static enum TIFFReadDirEntryErr TIFFReadDirEntryLong(TIFF* tif, TIFFDirEntry* direntry, uint32* value);
static enum TIFFReadDirEntryErr TIFFReadDirEntryLong8(TIFF* tif, TIFFDirEntry* direntry, uint64* value);
static enum TIFFReadDirEntryErr TIFFReadDirEntryFloat(TIFF* tif, TIFFDirEntry* direntry, float* value);
static enum TIFFReadDirEntryErr TIFFReadDirEntryDouble(TIFF* tif, TIFFDirEntry* direntry, double* value);
static enum TIFFReadDirEntryErr TIFFReadDirEntryIfd8(TIFF* tif, TIFFDirEntry* direntry, uint64* value);
static enum TIFFReadDirEntryErr TIFFReadDirEntryArray(TIFF* tif, TIFFDirEntry* direntry, uint32* count, uint32 desttypesize, void** value);
static enum TIFFReadDirEntryErr TIFFReadDirEntryByteArray(TIFF* tif, TIFFDirEntry* direntry, uint8** value);
static enum TIFFReadDirEntryErr TIFFReadDirEntrySbyteArray(TIFF* tif, TIFFDirEntry* direntry, int8** value);
static enum TIFFReadDirEntryErr TIFFReadDirEntryShortArray(TIFF* tif, TIFFDirEntry* direntry, uint16** value);
static enum TIFFReadDirEntryErr TIFFReadDirEntrySshortArray(TIFF* tif, TIFFDirEntry* direntry, int16** value);
static enum TIFFReadDirEntryErr TIFFReadDirEntryLongArray(TIFF* tif, TIFFDirEntry* direntry, uint32** value);
static enum TIFFReadDirEntryErr TIFFReadDirEntrySlongArray(TIFF* tif, TIFFDirEntry* direntry, int32** value);
static enum TIFFReadDirEntryErr TIFFReadDirEntryLong8Array(TIFF* tif, TIFFDirEntry* direntry, uint64** value);
static enum TIFFReadDirEntryErr TIFFReadDirEntrySlong8Array(TIFF* tif, TIFFDirEntry* direntry, int64** value);
static enum TIFFReadDirEntryErr TIFFReadDirEntryFloatArray(TIFF* tif, TIFFDirEntry* direntry, float** value);
static enum TIFFReadDirEntryErr TIFFReadDirEntryDoubleArray(TIFF* tif, TIFFDirEntry* direntry, double** value);
static enum TIFFReadDirEntryErr TIFFReadDirEntryIfd8Array(TIFF* tif, TIFFDirEntry* direntry, uint64** value);
static enum TIFFReadDirEntryErr TIFFReadDirEntryPersampleShort(TIFF* tif, TIFFDirEntry* direntry, uint16* value);
#if 0
static enum TIFFReadDirEntryErr TIFFReadDirEntryPersampleDouble(TIFF* tif, TIFFDirEntry* direntry, double* value);
#endif
static void TIFFReadDirEntryCheckedByte(TIFF* tif, TIFFDirEntry* direntry, uint8* value);
static void TIFFReadDirEntryCheckedSbyte(TIFF* tif, TIFFDirEntry* direntry, int8* value);
static void TIFFReadDirEntryCheckedShort(TIFF* tif, TIFFDirEntry* direntry, uint16* value);
static void TIFFReadDirEntryCheckedSshort(TIFF* tif, TIFFDirEntry* direntry, int16* value);
static void TIFFReadDirEntryCheckedLong(TIFF* tif, TIFFDirEntry* direntry, uint32* value);
static void TIFFReadDirEntryCheckedSlong(TIFF* tif, TIFFDirEntry* direntry, int32* value);
static enum TIFFReadDirEntryErr TIFFReadDirEntryCheckedLong8(TIFF* tif, TIFFDirEntry* direntry, uint64* value);
static enum TIFFReadDirEntryErr TIFFReadDirEntryCheckedSlong8(TIFF* tif, TIFFDirEntry* direntry, int64* value);
static enum TIFFReadDirEntryErr TIFFReadDirEntryCheckedRational(TIFF* tif, TIFFDirEntry* direntry, double* value);
static enum TIFFReadDirEntryErr TIFFReadDirEntryCheckedSrational(TIFF* tif, TIFFDirEntry* direntry, double* value);
static void TIFFReadDirEntryCheckedFloat(TIFF* tif, TIFFDirEntry* direntry, float* value);
static enum TIFFReadDirEntryErr TIFFReadDirEntryCheckedDouble(TIFF* tif, TIFFDirEntry* direntry, double* value);
static enum TIFFReadDirEntryErr TIFFReadDirEntryCheckRangeByteSbyte(int8 value);
static enum TIFFReadDirEntryErr TIFFReadDirEntryCheckRangeByteShort(uint16 value);
static enum TIFFReadDirEntryErr TIFFReadDirEntryCheckRangeByteSshort(int16 value);
static enum TIFFReadDirEntryErr TIFFReadDirEntryCheckRangeByteLong(uint32 value);
static enum TIFFReadDirEntryErr TIFFReadDirEntryCheckRangeByteSlong(int32 value);
static enum TIFFReadDirEntryErr TIFFReadDirEntryCheckRangeByteLong8(uint64 value);
static enum TIFFReadDirEntryErr TIFFReadDirEntryCheckRangeByteSlong8(int64 value);
static enum TIFFReadDirEntryErr TIFFReadDirEntryCheckRangeSbyteByte(uint8 value);
static enum TIFFReadDirEntryErr TIFFReadDirEntryCheckRangeSbyteShort(uint16 value);
static enum TIFFReadDirEntryErr TIFFReadDirEntryCheckRangeSbyteSshort(int16 value);
static enum TIFFReadDirEntryErr TIFFReadDirEntryCheckRangeSbyteLong(uint32 value);
static enum TIFFReadDirEntryErr TIFFReadDirEntryCheckRangeSbyteSlong(int32 value);
static enum TIFFReadDirEntryErr TIFFReadDirEntryCheckRangeSbyteLong8(uint64 value);
static enum TIFFReadDirEntryErr TIFFReadDirEntryCheckRangeSbyteSlong8(int64 value);
static enum TIFFReadDirEntryErr TIFFReadDirEntryCheckRangeShortSbyte(int8 value);
static enum TIFFReadDirEntryErr TIFFReadDirEntryCheckRangeShortSshort(int16 value);
static enum TIFFReadDirEntryErr TIFFReadDirEntryCheckRangeShortLong(uint32 value);
static enum TIFFReadDirEntryErr TIFFReadDirEntryCheckRangeShortSlong(int32 value);
static enum TIFFReadDirEntryErr TIFFReadDirEntryCheckRangeShortLong8(uint64 value);
static enum TIFFReadDirEntryErr TIFFReadDirEntryCheckRangeShortSlong8(int64 value);
static enum TIFFReadDirEntryErr TIFFReadDirEntryCheckRangeSshortShort(uint16 value);
static enum TIFFReadDirEntryErr TIFFReadDirEntryCheckRangeSshortLong(uint32 value);
static enum TIFFReadDirEntryErr TIFFReadDirEntryCheckRangeSshortSlong(int32 value);
static enum TIFFReadDirEntryErr TIFFReadDirEntryCheckRangeSshortLong8(uint64 value);
static enum TIFFReadDirEntryErr TIFFReadDirEntryCheckRangeSshortSlong8(int64 value);
static enum TIFFReadDirEntryErr TIFFReadDirEntryCheckRangeLongSbyte(int8 value);
static enum TIFFReadDirEntryErr TIFFReadDirEntryCheckRangeLongSshort(int16 value);
static enum TIFFReadDirEntryErr TIFFReadDirEntryCheckRangeLongSlong(int32 value);
static enum TIFFReadDirEntryErr TIFFReadDirEntryCheckRangeLongLong8(uint64 value);
static enum TIFFReadDirEntryErr TIFFReadDirEntryCheckRangeLongSlong8(int64 value);
static enum TIFFReadDirEntryErr TIFFReadDirEntryCheckRangeSlongLong(uint32 value);
static enum TIFFReadDirEntryErr TIFFReadDirEntryCheckRangeSlongLong8(uint64 value);
static enum TIFFReadDirEntryErr TIFFReadDirEntryCheckRangeSlongSlong8(int64 value);
static enum TIFFReadDirEntryErr TIFFReadDirEntryCheckRangeLong8Sbyte(int8 value);
static enum TIFFReadDirEntryErr TIFFReadDirEntryCheckRangeLong8Sshort(int16 value);
static enum TIFFReadDirEntryErr TIFFReadDirEntryCheckRangeLong8Slong(int32 value);
static enum TIFFReadDirEntryErr TIFFReadDirEntryCheckRangeLong8Slong8(int64 value);
static enum TIFFReadDirEntryErr TIFFReadDirEntryCheckRangeSlong8Long8(uint64 value);
static enum TIFFReadDirEntryErr TIFFReadDirEntryData(TIFF* tif, uint64 offset, tmsize_t size, void* dest);
static void TIFFReadDirEntryOutputErr(TIFF* tif, enum TIFFReadDirEntryErr err, const char* module, const char* tagname, int recover);
static void TIFFReadDirectoryCheckOrder(TIFF* tif, TIFFDirEntry* dir, uint16 dircount);
static TIFFDirEntry* TIFFReadDirectoryFindEntry(TIFF* tif, TIFFDirEntry* dir, uint16 dircount, uint16 tagid);
static void TIFFReadDirectoryFindFieldInfo(TIFF* tif, uint16 tagid, uint32* fii);
static int EstimateStripByteCounts(TIFF* tif, TIFFDirEntry* dir, uint16 dircount);
static void MissingRequired(TIFF*, const char*);
static int TIFFCheckDirOffset(TIFF* tif, uint64 diroff);
static int CheckDirCount(TIFF*, TIFFDirEntry*, uint32);
static uint16 TIFFFetchDirectory(TIFF* tif, uint64 diroff, TIFFDirEntry** pdir, uint64* nextdiroff);
static int TIFFFetchNormalTag(TIFF*, TIFFDirEntry*, int recover);
static int TIFFFetchStripThing(TIFF* tif, TIFFDirEntry* dir, uint32 nstrips, uint64** lpp);
static int TIFFFetchSubjectDistance(TIFF*, TIFFDirEntry*);
static void ChopUpSingleUncompressedStrip(TIFF*);
static uint64 TIFFReadUInt64(const uint8 *value);
typedef union _UInt64Aligned_t
{
double d;
uint64 l;
uint32 i[2];
uint16 s[4];
uint8 c[8];
} UInt64Aligned_t;
/*
Unaligned safe copy of a uint64 value from an octet array.
*/
static uint64 TIFFReadUInt64(const uint8 *value)
{
UInt64Aligned_t result;
result.c[0]=value[0];
result.c[1]=value[1];
result.c[2]=value[2];
result.c[3]=value[3];
result.c[4]=value[4];
result.c[5]=value[5];
result.c[6]=value[6];
result.c[7]=value[7];
return result.l;
}
static enum TIFFReadDirEntryErr TIFFReadDirEntryByte(TIFF* tif, TIFFDirEntry* direntry, uint8* value)
{
enum TIFFReadDirEntryErr err;
if (direntry->tdir_count!=1)
return(TIFFReadDirEntryErrCount);
switch (direntry->tdir_type)
{
case TIFF_BYTE:
TIFFReadDirEntryCheckedByte(tif,direntry,value);
return(TIFFReadDirEntryErrOk);
case TIFF_SBYTE:
{
int8 m;
TIFFReadDirEntryCheckedSbyte(tif,direntry,&m);
err=TIFFReadDirEntryCheckRangeByteSbyte(m);
if (err!=TIFFReadDirEntryErrOk)
return(err);
*value=(uint8)m;
return(TIFFReadDirEntryErrOk);
}
case TIFF_SHORT:
{
uint16 m;
TIFFReadDirEntryCheckedShort(tif,direntry,&m);
err=TIFFReadDirEntryCheckRangeByteShort(m);
if (err!=TIFFReadDirEntryErrOk)
return(err);
*value=(uint8)m;
return(TIFFReadDirEntryErrOk);
}
case TIFF_SSHORT:
{
int16 m;
TIFFReadDirEntryCheckedSshort(tif,direntry,&m);
err=TIFFReadDirEntryCheckRangeByteSshort(m);
if (err!=TIFFReadDirEntryErrOk)
return(err);
*value=(uint8)m;
return(TIFFReadDirEntryErrOk);
}
case TIFF_LONG:
{
uint32 m;
TIFFReadDirEntryCheckedLong(tif,direntry,&m);
err=TIFFReadDirEntryCheckRangeByteLong(m);
if (err!=TIFFReadDirEntryErrOk)
return(err);
*value=(uint8)m;
return(TIFFReadDirEntryErrOk);
}
case TIFF_SLONG:
{
int32 m;
TIFFReadDirEntryCheckedSlong(tif,direntry,&m);
err=TIFFReadDirEntryCheckRangeByteSlong(m);
if (err!=TIFFReadDirEntryErrOk)
return(err);
*value=(uint8)m;
return(TIFFReadDirEntryErrOk);
}
case TIFF_LONG8:
{
uint64 m;
err=TIFFReadDirEntryCheckedLong8(tif,direntry,&m);
if (err!=TIFFReadDirEntryErrOk)
return(err);
err=TIFFReadDirEntryCheckRangeByteLong8(m);
if (err!=TIFFReadDirEntryErrOk)
return(err);
*value=(uint8)m;
return(TIFFReadDirEntryErrOk);
}
case TIFF_SLONG8:
{
int64 m;
err=TIFFReadDirEntryCheckedSlong8(tif,direntry,&m);
if (err!=TIFFReadDirEntryErrOk)
return(err);
err=TIFFReadDirEntryCheckRangeByteSlong8(m);
if (err!=TIFFReadDirEntryErrOk)
return(err);
*value=(uint8)m;
return(TIFFReadDirEntryErrOk);
}
default:
return(TIFFReadDirEntryErrType);
}
}
static enum TIFFReadDirEntryErr TIFFReadDirEntryShort(TIFF* tif, TIFFDirEntry* direntry, uint16* value)
{
enum TIFFReadDirEntryErr err;
if (direntry->tdir_count!=1)
return(TIFFReadDirEntryErrCount);
switch (direntry->tdir_type)
{
case TIFF_BYTE:
{
uint8 m;
TIFFReadDirEntryCheckedByte(tif,direntry,&m);
*value=(uint16)m;
return(TIFFReadDirEntryErrOk);
}
case TIFF_SBYTE:
{
int8 m;
TIFFReadDirEntryCheckedSbyte(tif,direntry,&m);
err=TIFFReadDirEntryCheckRangeShortSbyte(m);
if (err!=TIFFReadDirEntryErrOk)
return(err);
*value=(uint16)m;
return(TIFFReadDirEntryErrOk);
}
case TIFF_SHORT:
TIFFReadDirEntryCheckedShort(tif,direntry,value);
return(TIFFReadDirEntryErrOk);
case TIFF_SSHORT:
{
int16 m;
TIFFReadDirEntryCheckedSshort(tif,direntry,&m);
err=TIFFReadDirEntryCheckRangeShortSshort(m);
if (err!=TIFFReadDirEntryErrOk)
return(err);
*value=(uint16)m;
return(TIFFReadDirEntryErrOk);
}
case TIFF_LONG:
{
uint32 m;
TIFFReadDirEntryCheckedLong(tif,direntry,&m);
err=TIFFReadDirEntryCheckRangeShortLong(m);
if (err!=TIFFReadDirEntryErrOk)
return(err);
*value=(uint16)m;
return(TIFFReadDirEntryErrOk);
}
case TIFF_SLONG:
{
int32 m;
TIFFReadDirEntryCheckedSlong(tif,direntry,&m);
err=TIFFReadDirEntryCheckRangeShortSlong(m);
if (err!=TIFFReadDirEntryErrOk)
return(err);
*value=(uint16)m;
return(TIFFReadDirEntryErrOk);
}
case TIFF_LONG8:
{
uint64 m;
err=TIFFReadDirEntryCheckedLong8(tif,direntry,&m);
if (err!=TIFFReadDirEntryErrOk)
return(err);
err=TIFFReadDirEntryCheckRangeShortLong8(m);
if (err!=TIFFReadDirEntryErrOk)
return(err);
*value=(uint16)m;
return(TIFFReadDirEntryErrOk);
}
case TIFF_SLONG8:
{
int64 m;
err=TIFFReadDirEntryCheckedSlong8(tif,direntry,&m);
if (err!=TIFFReadDirEntryErrOk)
return(err);
err=TIFFReadDirEntryCheckRangeShortSlong8(m);
if (err!=TIFFReadDirEntryErrOk)
return(err);
*value=(uint16)m;
return(TIFFReadDirEntryErrOk);
}
default:
return(TIFFReadDirEntryErrType);
}
}
static enum TIFFReadDirEntryErr TIFFReadDirEntryLong(TIFF* tif, TIFFDirEntry* direntry, uint32* value)
{
enum TIFFReadDirEntryErr err;
if (direntry->tdir_count!=1)
return(TIFFReadDirEntryErrCount);
switch (direntry->tdir_type)
{
case TIFF_BYTE:
{
uint8 m;
TIFFReadDirEntryCheckedByte(tif,direntry,&m);
*value=(uint32)m;
return(TIFFReadDirEntryErrOk);
}
case TIFF_SBYTE:
{
int8 m;
TIFFReadDirEntryCheckedSbyte(tif,direntry,&m);
err=TIFFReadDirEntryCheckRangeLongSbyte(m);
if (err!=TIFFReadDirEntryErrOk)
return(err);
*value=(uint32)m;
return(TIFFReadDirEntryErrOk);
}
case TIFF_SHORT:
{
uint16 m;
TIFFReadDirEntryCheckedShort(tif,direntry,&m);
*value=(uint32)m;
return(TIFFReadDirEntryErrOk);
}
case TIFF_SSHORT:
{
int16 m;
TIFFReadDirEntryCheckedSshort(tif,direntry,&m);
err=TIFFReadDirEntryCheckRangeLongSshort(m);
if (err!=TIFFReadDirEntryErrOk)
return(err);
*value=(uint32)m;
return(TIFFReadDirEntryErrOk);
}
case TIFF_LONG:
TIFFReadDirEntryCheckedLong(tif,direntry,value);
return(TIFFReadDirEntryErrOk);
case TIFF_SLONG:
{
int32 m;
TIFFReadDirEntryCheckedSlong(tif,direntry,&m);
err=TIFFReadDirEntryCheckRangeLongSlong(m);
if (err!=TIFFReadDirEntryErrOk)
return(err);
*value=(uint32)m;
return(TIFFReadDirEntryErrOk);
}
case TIFF_LONG8:
{
uint64 m;
err=TIFFReadDirEntryCheckedLong8(tif,direntry,&m);
if (err!=TIFFReadDirEntryErrOk)
return(err);
err=TIFFReadDirEntryCheckRangeLongLong8(m);
if (err!=TIFFReadDirEntryErrOk)
return(err);
*value=(uint32)m;
return(TIFFReadDirEntryErrOk);
}
case TIFF_SLONG8:
{
int64 m;
err=TIFFReadDirEntryCheckedSlong8(tif,direntry,&m);
if (err!=TIFFReadDirEntryErrOk)
return(err);
err=TIFFReadDirEntryCheckRangeLongSlong8(m);
if (err!=TIFFReadDirEntryErrOk)
return(err);
*value=(uint32)m;
return(TIFFReadDirEntryErrOk);
}
default:
return(TIFFReadDirEntryErrType);
}
}
static enum TIFFReadDirEntryErr TIFFReadDirEntryLong8(TIFF* tif, TIFFDirEntry* direntry, uint64* value)
{
enum TIFFReadDirEntryErr err;
if (direntry->tdir_count!=1)
return(TIFFReadDirEntryErrCount);
switch (direntry->tdir_type)
{
case TIFF_BYTE:
{
uint8 m;
TIFFReadDirEntryCheckedByte(tif,direntry,&m);
*value=(uint64)m;
return(TIFFReadDirEntryErrOk);
}
case TIFF_SBYTE:
{
int8 m;
TIFFReadDirEntryCheckedSbyte(tif,direntry,&m);
err=TIFFReadDirEntryCheckRangeLong8Sbyte(m);
if (err!=TIFFReadDirEntryErrOk)
return(err);
*value=(uint64)m;
return(TIFFReadDirEntryErrOk);
}
case TIFF_SHORT:
{
uint16 m;
TIFFReadDirEntryCheckedShort(tif,direntry,&m);
*value=(uint64)m;
return(TIFFReadDirEntryErrOk);
}
case TIFF_SSHORT:
{
int16 m;
TIFFReadDirEntryCheckedSshort(tif,direntry,&m);
err=TIFFReadDirEntryCheckRangeLong8Sshort(m);
if (err!=TIFFReadDirEntryErrOk)
return(err);
*value=(uint64)m;
return(TIFFReadDirEntryErrOk);
}
case TIFF_LONG:
{
uint32 m;
TIFFReadDirEntryCheckedLong(tif,direntry,&m);
*value=(uint64)m;
return(TIFFReadDirEntryErrOk);
}
case TIFF_SLONG:
{
int32 m;
TIFFReadDirEntryCheckedSlong(tif,direntry,&m);
err=TIFFReadDirEntryCheckRangeLong8Slong(m);
if (err!=TIFFReadDirEntryErrOk)
return(err);
*value=(uint64)m;
return(TIFFReadDirEntryErrOk);
}
case TIFF_LONG8:
err=TIFFReadDirEntryCheckedLong8(tif,direntry,value);
return(err);
case TIFF_SLONG8:
{
int64 m;
err=TIFFReadDirEntryCheckedSlong8(tif,direntry,&m);
if (err!=TIFFReadDirEntryErrOk)
return(err);
err=TIFFReadDirEntryCheckRangeLong8Slong8(m);
if (err!=TIFFReadDirEntryErrOk)
return(err);
*value=(uint64)m;
return(TIFFReadDirEntryErrOk);
}
default:
return(TIFFReadDirEntryErrType);
}
}
static enum TIFFReadDirEntryErr TIFFReadDirEntryFloat(TIFF* tif, TIFFDirEntry* direntry, float* value)
{
enum TIFFReadDirEntryErr err;
if (direntry->tdir_count!=1)
return(TIFFReadDirEntryErrCount);
switch (direntry->tdir_type)
{
case TIFF_BYTE:
{
uint8 m;
TIFFReadDirEntryCheckedByte(tif,direntry,&m);
*value=(float)m;
return(TIFFReadDirEntryErrOk);
}
case TIFF_SBYTE:
{
int8 m;
TIFFReadDirEntryCheckedSbyte(tif,direntry,&m);
*value=(float)m;
return(TIFFReadDirEntryErrOk);
}
case TIFF_SHORT:
{
uint16 m;
TIFFReadDirEntryCheckedShort(tif,direntry,&m);
*value=(float)m;
return(TIFFReadDirEntryErrOk);
}
case TIFF_SSHORT:
{
int16 m;
TIFFReadDirEntryCheckedSshort(tif,direntry,&m);
*value=(float)m;
return(TIFFReadDirEntryErrOk);
}
case TIFF_LONG:
{
uint32 m;
TIFFReadDirEntryCheckedLong(tif,direntry,&m);
*value=(float)m;
return(TIFFReadDirEntryErrOk);
}
case TIFF_SLONG:
{
int32 m;
TIFFReadDirEntryCheckedSlong(tif,direntry,&m);
*value=(float)m;
return(TIFFReadDirEntryErrOk);
}
case TIFF_LONG8:
{
uint64 m;
err=TIFFReadDirEntryCheckedLong8(tif,direntry,&m);
if (err!=TIFFReadDirEntryErrOk)
return(err);
#if defined(__WIN32__) && (_MSC_VER < 1500)
/*
* XXX: MSVC 6.0 does not support conversion
* of 64-bit integers into floating point
* values.
*/
*value = _TIFFUInt64ToFloat(m);
#else
*value=(float)m;
#endif
return(TIFFReadDirEntryErrOk);
}
case TIFF_SLONG8:
{
int64 m;
err=TIFFReadDirEntryCheckedSlong8(tif,direntry,&m);
if (err!=TIFFReadDirEntryErrOk)
return(err);
*value=(float)m;
return(TIFFReadDirEntryErrOk);
}
case TIFF_RATIONAL:
{
double m;
err=TIFFReadDirEntryCheckedRational(tif,direntry,&m);
if (err!=TIFFReadDirEntryErrOk)
return(err);
*value=(float)m;
return(TIFFReadDirEntryErrOk);
}
case TIFF_SRATIONAL:
{
double m;
err=TIFFReadDirEntryCheckedSrational(tif,direntry,&m);
if (err!=TIFFReadDirEntryErrOk)
return(err);
*value=(float)m;
return(TIFFReadDirEntryErrOk);
}
case TIFF_FLOAT:
TIFFReadDirEntryCheckedFloat(tif,direntry,value);
return(TIFFReadDirEntryErrOk);
case TIFF_DOUBLE:
{
double m;
err=TIFFReadDirEntryCheckedDouble(tif,direntry,&m);
if (err!=TIFFReadDirEntryErrOk)
return(err);
*value=(float)m;
return(TIFFReadDirEntryErrOk);
}
default:
return(TIFFReadDirEntryErrType);
}
}
static enum TIFFReadDirEntryErr TIFFReadDirEntryDouble(TIFF* tif, TIFFDirEntry* direntry, double* value)
{
enum TIFFReadDirEntryErr err;
if (direntry->tdir_count!=1)
return(TIFFReadDirEntryErrCount);
switch (direntry->tdir_type)
{
case TIFF_BYTE:
{
uint8 m;
TIFFReadDirEntryCheckedByte(tif,direntry,&m);
*value=(double)m;
return(TIFFReadDirEntryErrOk);
}
case TIFF_SBYTE:
{
int8 m;
TIFFReadDirEntryCheckedSbyte(tif,direntry,&m);
*value=(double)m;
return(TIFFReadDirEntryErrOk);
}
case TIFF_SHORT:
{
uint16 m;
TIFFReadDirEntryCheckedShort(tif,direntry,&m);
*value=(double)m;
return(TIFFReadDirEntryErrOk);
}
case TIFF_SSHORT:
{
int16 m;
TIFFReadDirEntryCheckedSshort(tif,direntry,&m);
*value=(double)m;
return(TIFFReadDirEntryErrOk);
}
case TIFF_LONG:
{
uint32 m;
TIFFReadDirEntryCheckedLong(tif,direntry,&m);
*value=(double)m;
return(TIFFReadDirEntryErrOk);
}
case TIFF_SLONG:
{
int32 m;
TIFFReadDirEntryCheckedSlong(tif,direntry,&m);
*value=(double)m;
return(TIFFReadDirEntryErrOk);
}
case TIFF_LONG8:
{
uint64 m;
err=TIFFReadDirEntryCheckedLong8(tif,direntry,&m);
if (err!=TIFFReadDirEntryErrOk)
return(err);
#if defined(__WIN32__) && (_MSC_VER < 1500)
/*
* XXX: MSVC 6.0 does not support conversion
* of 64-bit integers into floating point
* values.
*/
*value = _TIFFUInt64ToDouble(m);
#else
*value = (double)m;
#endif
return(TIFFReadDirEntryErrOk);
}
case TIFF_SLONG8:
{
int64 m;
err=TIFFReadDirEntryCheckedSlong8(tif,direntry,&m);
if (err!=TIFFReadDirEntryErrOk)
return(err);
*value=(double)m;
return(TIFFReadDirEntryErrOk);
}
case TIFF_RATIONAL:
err=TIFFReadDirEntryCheckedRational(tif,direntry,value);
return(err);
case TIFF_SRATIONAL:
err=TIFFReadDirEntryCheckedSrational(tif,direntry,value);
return(err);
case TIFF_FLOAT:
{
float m;
TIFFReadDirEntryCheckedFloat(tif,direntry,&m);
*value=(double)m;
return(TIFFReadDirEntryErrOk);
}
case TIFF_DOUBLE:
err=TIFFReadDirEntryCheckedDouble(tif,direntry,value);
return(err);
default:
return(TIFFReadDirEntryErrType);
}
}
static enum TIFFReadDirEntryErr TIFFReadDirEntryIfd8(TIFF* tif, TIFFDirEntry* direntry, uint64* value)
{
enum TIFFReadDirEntryErr err;
if (direntry->tdir_count!=1)
return(TIFFReadDirEntryErrCount);
switch (direntry->tdir_type)
{
case TIFF_LONG:
case TIFF_IFD:
{
uint32 m;
TIFFReadDirEntryCheckedLong(tif,direntry,&m);
*value=(uint64)m;
return(TIFFReadDirEntryErrOk);
}
case TIFF_LONG8:
case TIFF_IFD8:
err=TIFFReadDirEntryCheckedLong8(tif,direntry,value);
return(err);
default:
return(TIFFReadDirEntryErrType);
}
}
static enum TIFFReadDirEntryErr TIFFReadDirEntryArray(TIFF* tif, TIFFDirEntry* direntry, uint32* count, uint32 desttypesize, void** value)
{
int typesize;
uint32 datasize;
void* data;
typesize=TIFFDataWidth(direntry->tdir_type);
if ((direntry->tdir_count==0)||(typesize==0))
{
*value=0;
return(TIFFReadDirEntryErrOk);
}
(void) desttypesize;
/*
* As a sanity check, make sure we have no more than a 2GB tag array
* in either the current data type or the dest data type. This also
* avoids problems with overflow of tmsize_t on 32bit systems.
*/
if ((uint64)(2147483647/typesize)<direntry->tdir_count)
return(TIFFReadDirEntryErrSizesan);
if ((uint64)(2147483647/desttypesize)<direntry->tdir_count)
return(TIFFReadDirEntryErrSizesan);
*count=(uint32)direntry->tdir_count;
datasize=(*count)*typesize;
assert((tmsize_t)datasize>0);
data=_TIFFCheckMalloc(tif, *count, typesize, "ReadDirEntryArray");
if (data==0)
return(TIFFReadDirEntryErrAlloc);
if (!(tif->tif_flags&TIFF_BIGTIFF))
{
if (datasize<=4)
_TIFFmemcpy(data,&direntry->tdir_offset,datasize);
else
{
enum TIFFReadDirEntryErr err;
uint32 offset = direntry->tdir_offset.toff_long;
if (tif->tif_flags&TIFF_SWAB)
TIFFSwabLong(&offset);
err=TIFFReadDirEntryData(tif,(uint64)offset,(tmsize_t)datasize,data);
if (err!=TIFFReadDirEntryErrOk)
{
_TIFFfree(data);
return(err);
}
}
}
else
{
if (datasize<=8)
_TIFFmemcpy(data,&direntry->tdir_offset,datasize);
else
{
enum TIFFReadDirEntryErr err;
uint64 offset = direntry->tdir_offset.toff_long8;
if (tif->tif_flags&TIFF_SWAB)
TIFFSwabLong8(&offset);
err=TIFFReadDirEntryData(tif,offset,(tmsize_t)datasize,data);
if (err!=TIFFReadDirEntryErrOk)
{
_TIFFfree(data);
return(err);
}
}
}
*value=data;
return(TIFFReadDirEntryErrOk);
}
static enum TIFFReadDirEntryErr TIFFReadDirEntryByteArray(TIFF* tif, TIFFDirEntry* direntry, uint8** value)
{
enum TIFFReadDirEntryErr err;
uint32 count;
void* origdata;
uint8* data;
switch (direntry->tdir_type)
{
case TIFF_ASCII:
case TIFF_UNDEFINED:
case TIFF_BYTE:
case TIFF_SBYTE:
case TIFF_SHORT:
case TIFF_SSHORT:
case TIFF_LONG:
case TIFF_SLONG:
case TIFF_LONG8:
case TIFF_SLONG8:
break;
default:
return(TIFFReadDirEntryErrType);
}
err=TIFFReadDirEntryArray(tif,direntry,&count,1,&origdata);
if ((err!=TIFFReadDirEntryErrOk)||(origdata==0))
{
*value=0;
return(err);
}
switch (direntry->tdir_type)
{
case TIFF_ASCII:
case TIFF_UNDEFINED:
case TIFF_BYTE:
*value=(uint8*)origdata;
return(TIFFReadDirEntryErrOk);
case TIFF_SBYTE:
{
int8* m;
uint32 n;
m=(int8*)origdata;
for (n=0; n<count; n++)
{
err=TIFFReadDirEntryCheckRangeByteSbyte(*m);
if (err!=TIFFReadDirEntryErrOk)
{
_TIFFfree(origdata);
return(err);
}
m++;
}
*value=(uint8*)origdata;
return(TIFFReadDirEntryErrOk);
}
}
data=(uint8*)_TIFFmalloc(count);
if (data==0)
{
_TIFFfree(origdata);
return(TIFFReadDirEntryErrAlloc);
}
switch (direntry->tdir_type)
{
case TIFF_SHORT:
{
uint16* ma;
uint8* mb;
uint32 n;
ma=(uint16*)origdata;
mb=data;
for (n=0; n<count; n++)
{
if (tif->tif_flags&TIFF_SWAB)
TIFFSwabShort(ma);
err=TIFFReadDirEntryCheckRangeByteShort(*ma);
if (err!=TIFFReadDirEntryErrOk)
break;
*mb++=(uint8)(*ma++);
}
}
break;
case TIFF_SSHORT:
{
int16* ma;
uint8* mb;
uint32 n;
ma=(int16*)origdata;
mb=data;
for (n=0; n<count; n++)
{
if (tif->tif_flags&TIFF_SWAB)
TIFFSwabShort((uint16*)ma);
err=TIFFReadDirEntryCheckRangeByteSshort(*ma);
if (err!=TIFFReadDirEntryErrOk)
break;
*mb++=(uint8)(*ma++);
}
}
break;
case TIFF_LONG:
{
uint32* ma;
uint8* mb;
uint32 n;
ma=(uint32*)origdata;
mb=data;
for (n=0; n<count; n++)
{
if (tif->tif_flags&TIFF_SWAB)
TIFFSwabLong(ma);
err=TIFFReadDirEntryCheckRangeByteLong(*ma);
if (err!=TIFFReadDirEntryErrOk)
break;
*mb++=(uint8)(*ma++);
}
}
break;
case TIFF_SLONG:
{
int32* ma;
uint8* mb;
uint32 n;
ma=(int32*)origdata;
mb=data;
for (n=0; n<count; n++)
{
if (tif->tif_flags&TIFF_SWAB)
TIFFSwabLong((uint32*)ma);
err=TIFFReadDirEntryCheckRangeByteSlong(*ma);
if (err!=TIFFReadDirEntryErrOk)
break;
*mb++=(uint8)(*ma++);
}
}
break;
case TIFF_LONG8:
{
uint64* ma;
uint8* mb;
uint32 n;
ma=(uint64*)origdata;
mb=data;
for (n=0; n<count; n++)
{
if (tif->tif_flags&TIFF_SWAB)
TIFFSwabLong8(ma);
err=TIFFReadDirEntryCheckRangeByteLong8(*ma);
if (err!=TIFFReadDirEntryErrOk)
break;
*mb++=(uint8)(*ma++);
}
}
break;
case TIFF_SLONG8:
{
int64* ma;
uint8* mb;
uint32 n;
ma=(int64*)origdata;
mb=data;
for (n=0; n<count; n++)
{
if (tif->tif_flags&TIFF_SWAB)
TIFFSwabLong8((uint64*)ma);
err=TIFFReadDirEntryCheckRangeByteSlong8(*ma);
if (err!=TIFFReadDirEntryErrOk)
break;
*mb++=(uint8)(*ma++);