/* * 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 '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 "tiffconf.h" #include "tiffiop.h" #include <float.h> #include <limits.h> #include <stdlib.h> #include <string.h> #define FAILED_FII … #ifdef HAVE_IEEEFP #define TIFFCvtIEEEFloatToNative(tif, n, fp) … #define TIFFCvtIEEEDoubleToNative(tif, n, dp) … #else extern void TIFFCvtIEEEFloatToNative(TIFF *, uint32_t, float *); extern void TIFFCvtIEEEDoubleToNative(TIFF *, uint32_t, double *); #endif enum TIFFReadDirEntryErr { … }; static enum TIFFReadDirEntryErr TIFFReadDirEntryByte(TIFF *tif, TIFFDirEntry *direntry, uint8_t *value); static enum TIFFReadDirEntryErr TIFFReadDirEntrySbyte(TIFF *tif, TIFFDirEntry *direntry, int8_t *value); static enum TIFFReadDirEntryErr TIFFReadDirEntryShort(TIFF *tif, TIFFDirEntry *direntry, uint16_t *value); static enum TIFFReadDirEntryErr TIFFReadDirEntrySshort(TIFF *tif, TIFFDirEntry *direntry, int16_t *value); static enum TIFFReadDirEntryErr TIFFReadDirEntryLong(TIFF *tif, TIFFDirEntry *direntry, uint32_t *value); static enum TIFFReadDirEntryErr TIFFReadDirEntrySlong(TIFF *tif, TIFFDirEntry *direntry, int32_t *value); static enum TIFFReadDirEntryErr TIFFReadDirEntryLong8(TIFF *tif, TIFFDirEntry *direntry, uint64_t *value); static enum TIFFReadDirEntryErr TIFFReadDirEntrySlong8(TIFF *tif, TIFFDirEntry *direntry, int64_t *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_t *value); static enum TIFFReadDirEntryErr TIFFReadDirEntryArray(TIFF *tif, TIFFDirEntry *direntry, uint32_t *count, uint32_t desttypesize, void **value); static enum TIFFReadDirEntryErr TIFFReadDirEntryByteArray(TIFF *tif, TIFFDirEntry *direntry, uint8_t **value); static enum TIFFReadDirEntryErr TIFFReadDirEntrySbyteArray(TIFF *tif, TIFFDirEntry *direntry, int8_t **value); static enum TIFFReadDirEntryErr TIFFReadDirEntryShortArray(TIFF *tif, TIFFDirEntry *direntry, uint16_t **value); static enum TIFFReadDirEntryErr TIFFReadDirEntrySshortArray(TIFF *tif, TIFFDirEntry *direntry, int16_t **value); static enum TIFFReadDirEntryErr TIFFReadDirEntryLongArray(TIFF *tif, TIFFDirEntry *direntry, uint32_t **value); static enum TIFFReadDirEntryErr TIFFReadDirEntrySlongArray(TIFF *tif, TIFFDirEntry *direntry, int32_t **value); static enum TIFFReadDirEntryErr TIFFReadDirEntryLong8Array(TIFF *tif, TIFFDirEntry *direntry, uint64_t **value); static enum TIFFReadDirEntryErr TIFFReadDirEntrySlong8Array(TIFF *tif, TIFFDirEntry *direntry, int64_t **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_t **value); static enum TIFFReadDirEntryErr TIFFReadDirEntryPersampleShort(TIFF *tif, TIFFDirEntry *direntry, uint16_t *value); static void TIFFReadDirEntryCheckedByte(TIFF *tif, TIFFDirEntry *direntry, uint8_t *value); static void TIFFReadDirEntryCheckedSbyte(TIFF *tif, TIFFDirEntry *direntry, int8_t *value); static void TIFFReadDirEntryCheckedShort(TIFF *tif, TIFFDirEntry *direntry, uint16_t *value); static void TIFFReadDirEntryCheckedSshort(TIFF *tif, TIFFDirEntry *direntry, int16_t *value); static void TIFFReadDirEntryCheckedLong(TIFF *tif, TIFFDirEntry *direntry, uint32_t *value); static void TIFFReadDirEntryCheckedSlong(TIFF *tif, TIFFDirEntry *direntry, int32_t *value); static enum TIFFReadDirEntryErr TIFFReadDirEntryCheckedLong8(TIFF *tif, TIFFDirEntry *direntry, uint64_t *value); static enum TIFFReadDirEntryErr TIFFReadDirEntryCheckedSlong8(TIFF *tif, TIFFDirEntry *direntry, int64_t *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); #if 0 static enum TIFFReadDirEntryErr TIFFReadDirEntryCheckedRationalDirect(TIFF *tif, TIFFDirEntry *direntry, TIFFRational_t *value); #endif static enum TIFFReadDirEntryErr TIFFReadDirEntryCheckRangeByteSbyte(int8_t value); static enum TIFFReadDirEntryErr TIFFReadDirEntryCheckRangeByteShort(uint16_t value); static enum TIFFReadDirEntryErr TIFFReadDirEntryCheckRangeByteSshort(int16_t value); static enum TIFFReadDirEntryErr TIFFReadDirEntryCheckRangeByteLong(uint32_t value); static enum TIFFReadDirEntryErr TIFFReadDirEntryCheckRangeByteSlong(int32_t value); static enum TIFFReadDirEntryErr TIFFReadDirEntryCheckRangeByteLong8(uint64_t value); static enum TIFFReadDirEntryErr TIFFReadDirEntryCheckRangeByteSlong8(int64_t value); static enum TIFFReadDirEntryErr TIFFReadDirEntryCheckRangeSbyteByte(uint8_t value); static enum TIFFReadDirEntryErr TIFFReadDirEntryCheckRangeSbyteShort(uint16_t value); static enum TIFFReadDirEntryErr TIFFReadDirEntryCheckRangeSbyteSshort(int16_t value); static enum TIFFReadDirEntryErr TIFFReadDirEntryCheckRangeSbyteLong(uint32_t value); static enum TIFFReadDirEntryErr TIFFReadDirEntryCheckRangeSbyteSlong(int32_t value); static enum TIFFReadDirEntryErr TIFFReadDirEntryCheckRangeSbyteLong8(uint64_t value); static enum TIFFReadDirEntryErr TIFFReadDirEntryCheckRangeSbyteSlong8(int64_t value); static enum TIFFReadDirEntryErr TIFFReadDirEntryCheckRangeShortSbyte(int8_t value); static enum TIFFReadDirEntryErr TIFFReadDirEntryCheckRangeShortSshort(int16_t value); static enum TIFFReadDirEntryErr TIFFReadDirEntryCheckRangeShortLong(uint32_t value); static enum TIFFReadDirEntryErr TIFFReadDirEntryCheckRangeShortSlong(int32_t value); static enum TIFFReadDirEntryErr TIFFReadDirEntryCheckRangeShortLong8(uint64_t value); static enum TIFFReadDirEntryErr TIFFReadDirEntryCheckRangeShortSlong8(int64_t value); static enum TIFFReadDirEntryErr TIFFReadDirEntryCheckRangeSshortShort(uint16_t value); static enum TIFFReadDirEntryErr TIFFReadDirEntryCheckRangeSshortLong(uint32_t value); static enum TIFFReadDirEntryErr TIFFReadDirEntryCheckRangeSshortSlong(int32_t value); static enum TIFFReadDirEntryErr TIFFReadDirEntryCheckRangeSshortLong8(uint64_t value); static enum TIFFReadDirEntryErr TIFFReadDirEntryCheckRangeSshortSlong8(int64_t value); static enum TIFFReadDirEntryErr TIFFReadDirEntryCheckRangeLongSbyte(int8_t value); static enum TIFFReadDirEntryErr TIFFReadDirEntryCheckRangeLongSshort(int16_t value); static enum TIFFReadDirEntryErr TIFFReadDirEntryCheckRangeLongSlong(int32_t value); static enum TIFFReadDirEntryErr TIFFReadDirEntryCheckRangeLongLong8(uint64_t value); static enum TIFFReadDirEntryErr TIFFReadDirEntryCheckRangeLongSlong8(int64_t value); static enum TIFFReadDirEntryErr TIFFReadDirEntryCheckRangeSlongLong(uint32_t value); static enum TIFFReadDirEntryErr TIFFReadDirEntryCheckRangeSlongLong8(uint64_t value); static enum TIFFReadDirEntryErr TIFFReadDirEntryCheckRangeSlongSlong8(int64_t value); static enum TIFFReadDirEntryErr TIFFReadDirEntryCheckRangeLong8Sbyte(int8_t value); static enum TIFFReadDirEntryErr TIFFReadDirEntryCheckRangeLong8Sshort(int16_t value); static enum TIFFReadDirEntryErr TIFFReadDirEntryCheckRangeLong8Slong(int32_t value); static enum TIFFReadDirEntryErr TIFFReadDirEntryCheckRangeLong8Slong8(int64_t value); static enum TIFFReadDirEntryErr TIFFReadDirEntryCheckRangeSlong8Long8(uint64_t value); static enum TIFFReadDirEntryErr TIFFReadDirEntryData(TIFF *tif, uint64_t 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_t dircount); static TIFFDirEntry *TIFFReadDirectoryFindEntry(TIFF *tif, TIFFDirEntry *dir, uint16_t dircount, uint16_t tagid); static void TIFFReadDirectoryFindFieldInfo(TIFF *tif, uint16_t tagid, uint32_t *fii); static int EstimateStripByteCounts(TIFF *tif, TIFFDirEntry *dir, uint16_t dircount); static void MissingRequired(TIFF *, const char *); static int CheckDirCount(TIFF *, TIFFDirEntry *, uint32_t); static uint16_t TIFFFetchDirectory(TIFF *tif, uint64_t diroff, TIFFDirEntry **pdir, uint64_t *nextdiroff); static int TIFFFetchNormalTag(TIFF *, TIFFDirEntry *, int recover); static int TIFFFetchStripThing(TIFF *tif, TIFFDirEntry *dir, uint32_t nstrips, uint64_t **lpp); static int TIFFFetchSubjectDistance(TIFF *, TIFFDirEntry *); static void ChopUpSingleUncompressedStrip(TIFF *); static void TryChopUpUncompressedBigTiff(TIFF *); static uint64_t TIFFReadUInt64(const uint8_t *value); static int _TIFFGetMaxColorChannels(uint16_t photometric); static int _TIFFFillStrilesInternal(TIFF *tif, int loadStripByteCount); UInt64Aligned_t; /* Unaligned safe copy of a uint64_t value from an octet array. */ static uint64_t TIFFReadUInt64(const uint8_t *value) { … } static enum TIFFReadDirEntryErr TIFFReadDirEntryByte(TIFF *tif, TIFFDirEntry *direntry, uint8_t *value) { … } static enum TIFFReadDirEntryErr TIFFReadDirEntrySbyte(TIFF *tif, TIFFDirEntry *direntry, int8_t *value) { … } /*-- TIFFReadDirEntrySbyte() --*/ static enum TIFFReadDirEntryErr TIFFReadDirEntryShort(TIFF *tif, TIFFDirEntry *direntry, uint16_t *value) { … } /*-- TIFFReadDirEntryShort() --*/ static enum TIFFReadDirEntryErr TIFFReadDirEntrySshort(TIFF *tif, TIFFDirEntry *direntry, int16_t *value) { … } /*-- TIFFReadDirEntrySshort() --*/ static enum TIFFReadDirEntryErr TIFFReadDirEntryLong(TIFF *tif, TIFFDirEntry *direntry, uint32_t *value) { … } /*-- TIFFReadDirEntryLong() --*/ static enum TIFFReadDirEntryErr TIFFReadDirEntrySlong(TIFF *tif, TIFFDirEntry *direntry, int32_t *value) { … } /*-- TIFFReadDirEntrySlong() --*/ static enum TIFFReadDirEntryErr TIFFReadDirEntryLong8(TIFF *tif, TIFFDirEntry *direntry, uint64_t *value) { … } /*-- TIFFReadDirEntryLong8() --*/ static enum TIFFReadDirEntryErr TIFFReadDirEntrySlong8(TIFF *tif, TIFFDirEntry *direntry, int64_t *value) { … } /*-- TIFFReadDirEntrySlong8() --*/ 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_t *value) { … } #define INITIAL_THRESHOLD … #define THRESHOLD_MULTIPLIER … #define MAX_THRESHOLD … static enum TIFFReadDirEntryErr TIFFReadDirEntryDataAndRealloc(TIFF *tif, uint64_t offset, tmsize_t size, void **pdest) { … } /* Caution: if raising that value, make sure int32 / uint32 overflows can't * occur elsewhere */ #define MAX_SIZE_TAG_DATA … static enum TIFFReadDirEntryErr TIFFReadDirEntryArrayWithLimit(TIFF *tif, TIFFDirEntry *direntry, uint32_t *count, uint32_t desttypesize, void **value, uint64_t maxcount) { … } static enum TIFFReadDirEntryErr TIFFReadDirEntryArray(TIFF *tif, TIFFDirEntry *direntry, uint32_t *count, uint32_t desttypesize, void **value) { … } static enum TIFFReadDirEntryErr TIFFReadDirEntryByteArray(TIFF *tif, TIFFDirEntry *direntry, uint8_t **value) { … } static enum TIFFReadDirEntryErr TIFFReadDirEntrySbyteArray(TIFF *tif, TIFFDirEntry *direntry, int8_t **value) { … } static enum TIFFReadDirEntryErr TIFFReadDirEntryShortArray(TIFF *tif, TIFFDirEntry *direntry, uint16_t **value) { … } static enum TIFFReadDirEntryErr TIFFReadDirEntrySshortArray(TIFF *tif, TIFFDirEntry *direntry, int16_t **value) { … } static enum TIFFReadDirEntryErr TIFFReadDirEntryLongArray(TIFF *tif, TIFFDirEntry *direntry, uint32_t **value) { … } static enum TIFFReadDirEntryErr TIFFReadDirEntrySlongArray(TIFF *tif, TIFFDirEntry *direntry, int32_t **value) { … } static enum TIFFReadDirEntryErr TIFFReadDirEntryLong8ArrayWithLimit(TIFF *tif, TIFFDirEntry *direntry, uint64_t **value, uint64_t maxcount) { … } static enum TIFFReadDirEntryErr TIFFReadDirEntryLong8Array(TIFF *tif, TIFFDirEntry *direntry, uint64_t **value) { … } static enum TIFFReadDirEntryErr TIFFReadDirEntrySlong8Array(TIFF *tif, TIFFDirEntry *direntry, int64_t **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_t **value) { … } static enum TIFFReadDirEntryErr TIFFReadDirEntryPersampleShort(TIFF *tif, TIFFDirEntry *direntry, uint16_t *value) { … } static void TIFFReadDirEntryCheckedByte(TIFF *tif, TIFFDirEntry *direntry, uint8_t *value) { … } static void TIFFReadDirEntryCheckedSbyte(TIFF *tif, TIFFDirEntry *direntry, int8_t *value) { … } static void TIFFReadDirEntryCheckedShort(TIFF *tif, TIFFDirEntry *direntry, uint16_t *value) { … } static void TIFFReadDirEntryCheckedSshort(TIFF *tif, TIFFDirEntry *direntry, int16_t *value) { … } static void TIFFReadDirEntryCheckedLong(TIFF *tif, TIFFDirEntry *direntry, uint32_t *value) { … } static void TIFFReadDirEntryCheckedSlong(TIFF *tif, TIFFDirEntry *direntry, int32_t *value) { … } static enum TIFFReadDirEntryErr TIFFReadDirEntryCheckedLong8(TIFF *tif, TIFFDirEntry *direntry, uint64_t *value) { … } static enum TIFFReadDirEntryErr TIFFReadDirEntryCheckedSlong8(TIFF *tif, TIFFDirEntry *direntry, int64_t *value) { … } static enum TIFFReadDirEntryErr TIFFReadDirEntryCheckedRational(TIFF *tif, TIFFDirEntry *direntry, double *value) { … } static enum TIFFReadDirEntryErr TIFFReadDirEntryCheckedSrational(TIFF *tif, TIFFDirEntry *direntry, double *value) { … } #if 0 static enum TIFFReadDirEntryErr TIFFReadDirEntryCheckedRationalDirect(TIFF *tif, TIFFDirEntry *direntry, TIFFRational_t *value) { /*--: SetGetRATIONAL_directly:_CustomTag: Read rational (and signed rationals) directly --*/ UInt64Aligned_t m; assert(sizeof(double) == 8); assert(sizeof(uint64_t) == 8); assert(sizeof(uint32_t) == 4); if (direntry->tdir_count != 1) return (TIFFReadDirEntryErrCount); if (direntry->tdir_type != TIFF_RATIONAL && direntry->tdir_type != TIFF_SRATIONAL) return (TIFFReadDirEntryErrType); if (!(tif->tif_flags & TIFF_BIGTIFF)) { enum TIFFReadDirEntryErr err; uint32_t offset = direntry->tdir_offset.toff_long; if (tif->tif_flags & TIFF_SWAB) TIFFSwabLong(&offset); err = TIFFReadDirEntryData(tif, offset, 8, m.i); if (err != TIFFReadDirEntryErrOk) return (err); } else { m.l = direntry->tdir_offset.toff_long8; } if (tif->tif_flags & TIFF_SWAB) TIFFSwabArrayOfLong(m.i, 2); value->uNum = m.i[0]; value->uDenom = m.i[1]; return (TIFFReadDirEntryErrOk); } /*-- TIFFReadDirEntryCheckedRationalDirect() --*/ #endif static void TIFFReadDirEntryCheckedFloat(TIFF *tif, TIFFDirEntry *direntry, float *value) { … } static enum TIFFReadDirEntryErr TIFFReadDirEntryCheckedDouble(TIFF *tif, TIFFDirEntry *direntry, double *value) { … } static enum TIFFReadDirEntryErr TIFFReadDirEntryCheckRangeByteSbyte(int8_t value) { … } static enum TIFFReadDirEntryErr TIFFReadDirEntryCheckRangeByteShort(uint16_t value) { … } static enum TIFFReadDirEntryErr TIFFReadDirEntryCheckRangeByteSshort(int16_t value) { … } static enum TIFFReadDirEntryErr TIFFReadDirEntryCheckRangeByteLong(uint32_t value) { … } static enum TIFFReadDirEntryErr TIFFReadDirEntryCheckRangeByteSlong(int32_t value) { … } static enum TIFFReadDirEntryErr TIFFReadDirEntryCheckRangeByteLong8(uint64_t value) { … } static enum TIFFReadDirEntryErr TIFFReadDirEntryCheckRangeByteSlong8(int64_t value) { … } static enum TIFFReadDirEntryErr TIFFReadDirEntryCheckRangeSbyteByte(uint8_t value) { … } static enum TIFFReadDirEntryErr TIFFReadDirEntryCheckRangeSbyteShort(uint16_t value) { … } static enum TIFFReadDirEntryErr TIFFReadDirEntryCheckRangeSbyteSshort(int16_t value) { … } static enum TIFFReadDirEntryErr TIFFReadDirEntryCheckRangeSbyteLong(uint32_t value) { … } static enum TIFFReadDirEntryErr TIFFReadDirEntryCheckRangeSbyteSlong(int32_t value) { … } static enum TIFFReadDirEntryErr TIFFReadDirEntryCheckRangeSbyteLong8(uint64_t value) { … } static enum TIFFReadDirEntryErr TIFFReadDirEntryCheckRangeSbyteSlong8(int64_t value) { … } static enum TIFFReadDirEntryErr TIFFReadDirEntryCheckRangeShortSbyte(int8_t value) { … } static enum TIFFReadDirEntryErr TIFFReadDirEntryCheckRangeShortSshort(int16_t value) { … } static enum TIFFReadDirEntryErr TIFFReadDirEntryCheckRangeShortLong(uint32_t value) { … } static enum TIFFReadDirEntryErr TIFFReadDirEntryCheckRangeShortSlong(int32_t value) { … } static enum TIFFReadDirEntryErr TIFFReadDirEntryCheckRangeShortLong8(uint64_t value) { … } static enum TIFFReadDirEntryErr TIFFReadDirEntryCheckRangeShortSlong8(int64_t value) { … } static enum TIFFReadDirEntryErr TIFFReadDirEntryCheckRangeSshortShort(uint16_t value) { … } static enum TIFFReadDirEntryErr TIFFReadDirEntryCheckRangeSshortLong(uint32_t value) { … } static enum TIFFReadDirEntryErr TIFFReadDirEntryCheckRangeSshortSlong(int32_t value) { … } static enum TIFFReadDirEntryErr TIFFReadDirEntryCheckRangeSshortLong8(uint64_t value) { … } static enum TIFFReadDirEntryErr TIFFReadDirEntryCheckRangeSshortSlong8(int64_t value) { … } static enum TIFFReadDirEntryErr TIFFReadDirEntryCheckRangeLongSbyte(int8_t value) { … } static enum TIFFReadDirEntryErr TIFFReadDirEntryCheckRangeLongSshort(int16_t value) { … } static enum TIFFReadDirEntryErr TIFFReadDirEntryCheckRangeLongSlong(int32_t value) { … } static enum TIFFReadDirEntryErr TIFFReadDirEntryCheckRangeLongLong8(uint64_t value) { … } static enum TIFFReadDirEntryErr TIFFReadDirEntryCheckRangeLongSlong8(int64_t value) { … } static enum TIFFReadDirEntryErr TIFFReadDirEntryCheckRangeSlongLong(uint32_t value) { … } /* Check that the 8-byte unsigned value can fit in a 4-byte unsigned range */ static enum TIFFReadDirEntryErr TIFFReadDirEntryCheckRangeSlongLong8(uint64_t value) { … } /* Check that the 8-byte signed value can fit in a 4-byte signed range */ static enum TIFFReadDirEntryErr TIFFReadDirEntryCheckRangeSlongSlong8(int64_t value) { … } static enum TIFFReadDirEntryErr TIFFReadDirEntryCheckRangeLong8Sbyte(int8_t value) { … } static enum TIFFReadDirEntryErr TIFFReadDirEntryCheckRangeLong8Sshort(int16_t value) { … } static enum TIFFReadDirEntryErr TIFFReadDirEntryCheckRangeLong8Slong(int32_t value) { … } static enum TIFFReadDirEntryErr TIFFReadDirEntryCheckRangeLong8Slong8(int64_t value) { … } static enum TIFFReadDirEntryErr TIFFReadDirEntryCheckRangeSlong8Long8(uint64_t value) { … } static enum TIFFReadDirEntryErr TIFFReadDirEntryData(TIFF *tif, uint64_t offset, tmsize_t size, void *dest) { … } static void TIFFReadDirEntryOutputErr(TIFF *tif, enum TIFFReadDirEntryErr err, const char *module, const char *tagname, int recover) { … } /* * Return the maximum number of color channels specified for a given photometric * type. 0 is returned if photometric type isn't supported or no default value * is defined by the specification. */ static int _TIFFGetMaxColorChannels(uint16_t photometric) { … } static int ByteCountLooksBad(TIFF *tif) { … } /* * Read the next TIFF directory from a file and convert it to the internal * format. We read directories sequentially. */ int TIFFReadDirectory(TIFF *tif) { … } static void TIFFReadDirectoryCheckOrder(TIFF *tif, TIFFDirEntry *dir, uint16_t dircount) { … } static TIFFDirEntry *TIFFReadDirectoryFindEntry(TIFF *tif, TIFFDirEntry *dir, uint16_t dircount, uint16_t tagid) { … } static void TIFFReadDirectoryFindFieldInfo(TIFF *tif, uint16_t tagid, uint32_t *fii) { … } /* * Read custom directory from the arbitrary offset. * The code is very similar to TIFFReadDirectory(). */ int TIFFReadCustomDirectory(TIFF *tif, toff_t diroff, const TIFFFieldArray *infoarray) { … } /* * EXIF is important special case of custom IFD, so we have a special * function to read it. */ int TIFFReadEXIFDirectory(TIFF *tif, toff_t diroff) { … } /* *--: EXIF-GPS custom directory reading as another special case of custom IFD. */ int TIFFReadGPSDirectory(TIFF *tif, toff_t diroff) { … } static int EstimateStripByteCounts(TIFF *tif, TIFFDirEntry *dir, uint16_t dircount) { … } static void MissingRequired(TIFF *tif, const char *tagname) { … } static unsigned long hashFuncOffsetToNumber(const void *elt) { … } static bool equalFuncOffsetToNumber(const void *elt1, const void *elt2) { … } static unsigned long hashFuncNumberToOffset(const void *elt) { … } static bool equalFuncNumberToOffset(const void *elt1, const void *elt2) { … } /* * Check the directory number and offset against the list of already seen * directory numbers and offsets. This is a trick to prevent IFD looping. * The one can create TIFF file with looped directory pointers. We will * maintain a list of already seen directories and check every IFD offset * and its IFD number against that list. However, the offset of an IFD number * can change - e.g. when writing updates to file. * Returns 1 if all is ok; 0 if last directory or IFD loop is encountered, * or an error has occurred. */ int _TIFFCheckDirNumberAndOffset(TIFF *tif, tdir_t dirn, uint64_t diroff) { … } /* --- _TIFFCheckDirNumberAndOffset() ---*/ /* * Retrieve the matching IFD directory number of a given IFD offset * from the list of directories already seen. * Returns 1 if the offset was in the list and the directory number * can be returned. * Otherwise returns 0 or if an error occurred. */ int _TIFFGetDirNumberFromOffset(TIFF *tif, uint64_t diroff, tdir_t *dirn) { … } /*--- _TIFFGetDirNumberFromOffset() ---*/ /* * Retrieve the matching IFD directory offset of a given IFD number * from the list of directories already seen. * Returns 1 if the offset was in the list of already seen IFDs and the * directory offset can be returned. The directory list is not updated. * Otherwise returns 0 or if an error occurred. */ int _TIFFGetOffsetFromDirNumber(TIFF *tif, tdir_t dirn, uint64_t *diroff) { … } /*--- _TIFFGetOffsetFromDirNumber() ---*/ /* * Remove an entry from the directory list of already seen directories * by directory offset. * If an entry is to be removed from the list, it is also okay if the entry * is not in the list or the list does not exist. */ int _TIFFRemoveEntryFromDirectoryListByOffset(TIFF *tif, uint64_t diroff) { … } /*--- _TIFFRemoveEntryFromDirectoryListByOffset() ---*/ /* * Check the count field of a directory entry against a known value. The * caller is expected to skip/ignore the tag if there is a mismatch. */ static int CheckDirCount(TIFF *tif, TIFFDirEntry *dir, uint32_t count) { … } /* * Read IFD structure from the specified offset. If the pointer to * nextdiroff variable has been specified, read it too. Function returns a * number of fields in the directory or 0 if failed. */ static uint16_t TIFFFetchDirectory(TIFF *tif, uint64_t diroff, TIFFDirEntry **pdir, uint64_t *nextdiroff) { … } /* * Fetch a tag that is not handled by special case code. */ static int TIFFFetchNormalTag(TIFF *tif, TIFFDirEntry *dp, int recover) { … } /* * Fetch a set of offsets or lengths. * While this routine says "strips", in fact it's also used for tiles. */ static int TIFFFetchStripThing(TIFF *tif, TIFFDirEntry *dir, uint32_t nstrips, uint64_t **lpp) { … } /* * Fetch and set the SubjectDistance EXIF tag. */ static int TIFFFetchSubjectDistance(TIFF *tif, TIFFDirEntry *dir) { … } static void allocChoppedUpStripArrays(TIFF *tif, uint32_t nstrips, uint64_t stripbytes, uint32_t rowsperstrip) { … } /* * Replace a single strip (tile) of uncompressed data by multiple strips * (tiles), each approximately STRIP_SIZE_DEFAULT bytes. This is useful for * dealing with large images or for dealing with machines with a limited * amount memory. */ static void ChopUpSingleUncompressedStrip(TIFF *tif) { … } /* * Replace a file with contiguous strips > 2 GB of uncompressed data by * multiple smaller strips. This is useful for * dealing with large images or for dealing with machines with a limited * amount memory. */ static void TryChopUpUncompressedBigTiff(TIFF *tif) { … } TIFF_NOSANITIZE_UNSIGNED_INT_OVERFLOW static uint64_t _TIFFUnsanitizedAddUInt64AndInt(uint64_t a, int b) { … } /* Read the value of [Strip|Tile]Offset or [Strip|Tile]ByteCount around * strip/tile of number strile. Also fetch the neighbouring values using a * 4096 byte page size. */ static int _TIFFPartialReadStripArray(TIFF *tif, TIFFDirEntry *dirent, int strile, uint64_t *panVals) { … } static int _TIFFFetchStrileValue(TIFF *tif, uint32_t strile, TIFFDirEntry *dirent, uint64_t **parray) { … } static uint64_t _TIFFGetStrileOffsetOrByteCountValue(TIFF *tif, uint32_t strile, TIFFDirEntry *dirent, uint64_t **parray, int *pbErr) { … } /* Return the value of the TileOffsets/StripOffsets array for the specified * tile/strile */ uint64_t TIFFGetStrileOffset(TIFF *tif, uint32_t strile) { … } /* Return the value of the TileOffsets/StripOffsets array for the specified * tile/strile */ uint64_t TIFFGetStrileOffsetWithErr(TIFF *tif, uint32_t strile, int *pbErr) { … } /* Return the value of the TileByteCounts/StripByteCounts array for the * specified tile/strile */ uint64_t TIFFGetStrileByteCount(TIFF *tif, uint32_t strile) { … } /* Return the value of the TileByteCounts/StripByteCounts array for the * specified tile/strile */ uint64_t TIFFGetStrileByteCountWithErr(TIFF *tif, uint32_t strile, int *pbErr) { … } int _TIFFFillStriles(TIFF *tif) { … } static int _TIFFFillStrilesInternal(TIFF *tif, int loadStripByteCount) { … }
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