| /* |
| * 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 Tag Get & Set Routines. |
| * (and also some miscellaneous stuff) |
| */ |
| #include "tiffiop.h" |
| #include <float.h> /*--: for Rational2Double */ |
| #include <limits.h> |
| |
| /* |
| * These are used in the backwards compatibility code... |
| */ |
| #define DATATYPE_VOID 0 /* !untyped data */ |
| #define DATATYPE_INT 1 /* !signed integer data */ |
| #define DATATYPE_UINT 2 /* !unsigned integer data */ |
| #define DATATYPE_IEEEFP 3 /* !IEEE floating point data */ |
| |
| static void setByteArray(TIFF *tif, void **vpp, const void *vp, size_t nmemb, |
| size_t elem_size) |
| { |
| if (*vpp) |
| { |
| _TIFFfreeExt(tif, *vpp); |
| *vpp = 0; |
| } |
| if (vp) |
| { |
| tmsize_t bytes = _TIFFMultiplySSize(NULL, nmemb, elem_size, NULL); |
| if (bytes) |
| *vpp = (void *)_TIFFmallocExt(tif, bytes); |
| if (*vpp) |
| _TIFFmemcpy(*vpp, vp, bytes); |
| } |
| } |
| void _TIFFsetByteArray(void **vpp, const void *vp, uint32_t n) |
| { |
| setByteArray(NULL, vpp, vp, n, 1); |
| } |
| void _TIFFsetByteArrayExt(TIFF *tif, void **vpp, const void *vp, uint32_t n) |
| { |
| setByteArray(tif, vpp, vp, n, 1); |
| } |
| |
| static void _TIFFsetNString(TIFF *tif, char **cpp, const char *cp, uint32_t n) |
| { |
| setByteArray(tif, (void **)cpp, cp, n, 1); |
| } |
| |
| void _TIFFsetShortArray(uint16_t **wpp, const uint16_t *wp, uint32_t n) |
| { |
| setByteArray(NULL, (void **)wpp, wp, n, sizeof(uint16_t)); |
| } |
| void _TIFFsetShortArrayExt(TIFF *tif, uint16_t **wpp, const uint16_t *wp, |
| uint32_t n) |
| { |
| setByteArray(tif, (void **)wpp, wp, n, sizeof(uint16_t)); |
| } |
| |
| void _TIFFsetLongArray(uint32_t **lpp, const uint32_t *lp, uint32_t n) |
| { |
| setByteArray(NULL, (void **)lpp, lp, n, sizeof(uint32_t)); |
| } |
| void _TIFFsetLongArrayExt(TIFF *tif, uint32_t **lpp, const uint32_t *lp, |
| uint32_t n) |
| { |
| setByteArray(tif, (void **)lpp, lp, n, sizeof(uint32_t)); |
| } |
| |
| static void _TIFFsetLong8Array(TIFF *tif, uint64_t **lpp, const uint64_t *lp, |
| uint32_t n) |
| { |
| setByteArray(tif, (void **)lpp, lp, n, sizeof(uint64_t)); |
| } |
| |
| void _TIFFsetFloatArray(float **fpp, const float *fp, uint32_t n) |
| { |
| setByteArray(NULL, (void **)fpp, fp, n, sizeof(float)); |
| } |
| void _TIFFsetFloatArrayExt(TIFF *tif, float **fpp, const float *fp, uint32_t n) |
| { |
| setByteArray(tif, (void **)fpp, fp, n, sizeof(float)); |
| } |
| |
| void _TIFFsetDoubleArray(double **dpp, const double *dp, uint32_t n) |
| { |
| setByteArray(NULL, (void **)dpp, dp, n, sizeof(double)); |
| } |
| void _TIFFsetDoubleArrayExt(TIFF *tif, double **dpp, const double *dp, |
| uint32_t n) |
| { |
| setByteArray(tif, (void **)dpp, dp, n, sizeof(double)); |
| } |
| |
| static void setDoubleArrayOneValue(TIFF *tif, double **vpp, double value, |
| size_t nmemb) |
| { |
| if (*vpp) |
| _TIFFfreeExt(tif, *vpp); |
| *vpp = _TIFFmallocExt(tif, nmemb * sizeof(double)); |
| if (*vpp) |
| { |
| while (nmemb--) |
| ((double *)*vpp)[nmemb] = value; |
| } |
| } |
| |
| /* |
| * Install extra samples information. |
| */ |
| static int setExtraSamples(TIFF *tif, va_list ap, uint32_t *v) |
| { |
| /* XXX: Unassociated alpha data == 999 is a known Corel Draw bug, see below */ |
| #define EXTRASAMPLE_COREL_UNASSALPHA 999 |
| |
| uint16_t *va; |
| uint32_t i; |
| TIFFDirectory *td = &tif->tif_dir; |
| static const char module[] = "setExtraSamples"; |
| |
| *v = (uint16_t)va_arg(ap, uint16_vap); |
| if ((uint16_t)*v > td->td_samplesperpixel) |
| return 0; |
| va = va_arg(ap, uint16_t *); |
| if (*v > 0 && va == NULL) /* typically missing param */ |
| return 0; |
| for (i = 0; i < *v; i++) |
| { |
| if (va[i] > EXTRASAMPLE_UNASSALPHA) |
| { |
| /* |
| * XXX: Corel Draw is known to produce incorrect |
| * ExtraSamples tags which must be patched here if we |
| * want to be able to open some of the damaged TIFF |
| * files: |
| */ |
| if (va[i] == EXTRASAMPLE_COREL_UNASSALPHA) |
| va[i] = EXTRASAMPLE_UNASSALPHA; |
| else |
| return 0; |
| } |
| } |
| |
| if (td->td_transferfunction[0] != NULL && |
| (td->td_samplesperpixel - *v > 1) && |
| !(td->td_samplesperpixel - td->td_extrasamples > 1)) |
| { |
| TIFFWarningExtR(tif, module, |
| "ExtraSamples tag value is changing, " |
| "but TransferFunction was read with a different value. " |
| "Canceling it"); |
| TIFFClrFieldBit(tif, FIELD_TRANSFERFUNCTION); |
| _TIFFfreeExt(tif, td->td_transferfunction[0]); |
| td->td_transferfunction[0] = NULL; |
| } |
| |
| td->td_extrasamples = (uint16_t)*v; |
| _TIFFsetShortArrayExt(tif, &td->td_sampleinfo, va, td->td_extrasamples); |
| return 1; |
| |
| #undef EXTRASAMPLE_COREL_UNASSALPHA |
| } |
| |
| /* |
| * Count ink names separated by \0. Returns |
| * zero if the ink names are not as expected. |
| */ |
| static uint16_t countInkNamesString(TIFF *tif, uint32_t slen, const char *s) |
| { |
| uint16_t i = 0; |
| |
| if (slen > 0) |
| { |
| const char *ep = s + slen; |
| const char *cp = s; |
| do |
| { |
| for (; cp < ep && *cp != '\0'; cp++) |
| { |
| } |
| if (cp >= ep) |
| goto bad; |
| cp++; /* skip \0 */ |
| i++; |
| } while (cp < ep); |
| return (i); |
| } |
| bad: |
| TIFFErrorExtR(tif, "TIFFSetField", |
| "%s: Invalid InkNames value; no null at given buffer end " |
| "location %" PRIu32 ", after %" PRIu16 " ink", |
| tif->tif_name, slen, i); |
| return (0); |
| } |
| |
| static int _TIFFVSetField(TIFF *tif, uint32_t tag, va_list ap) |
| { |
| static const char module[] = "_TIFFVSetField"; |
| |
| TIFFDirectory *td = &tif->tif_dir; |
| int status = 1; |
| uint32_t v32, v; |
| double dblval; |
| char *s; |
| const TIFFField *fip = TIFFFindField(tif, tag, TIFF_ANY); |
| uint32_t standard_tag = tag; |
| if (fip == NULL) /* cannot happen since OkToChangeTag() already checks it */ |
| return 0; |
| /* |
| * We want to force the custom code to be used for custom |
| * fields even if the tag happens to match a well known |
| * one - important for reinterpreted handling of standard |
| * tag values in custom directories (i.e. EXIF) |
| */ |
| if (fip->field_bit == FIELD_CUSTOM) |
| { |
| standard_tag = 0; |
| } |
| |
| switch (standard_tag) |
| { |
| case TIFFTAG_SUBFILETYPE: |
| td->td_subfiletype = (uint32_t)va_arg(ap, uint32_t); |
| break; |
| case TIFFTAG_IMAGEWIDTH: |
| td->td_imagewidth = (uint32_t)va_arg(ap, uint32_t); |
| break; |
| case TIFFTAG_IMAGELENGTH: |
| td->td_imagelength = (uint32_t)va_arg(ap, uint32_t); |
| break; |
| case TIFFTAG_BITSPERSAMPLE: |
| td->td_bitspersample = (uint16_t)va_arg(ap, uint16_vap); |
| /* |
| * If the data require post-decoding processing to byte-swap |
| * samples, set it up here. Note that since tags are required |
| * to be ordered, compression code can override this behavior |
| * in the setup method if it wants to roll the post decoding |
| * work in with its normal work. |
| */ |
| if (tif->tif_flags & TIFF_SWAB) |
| { |
| if (td->td_bitspersample == 8) |
| tif->tif_postdecode = _TIFFNoPostDecode; |
| else if (td->td_bitspersample == 16) |
| tif->tif_postdecode = _TIFFSwab16BitData; |
| else if (td->td_bitspersample == 24) |
| tif->tif_postdecode = _TIFFSwab24BitData; |
| else if (td->td_bitspersample == 32) |
| tif->tif_postdecode = _TIFFSwab32BitData; |
| else if (td->td_bitspersample == 64) |
| tif->tif_postdecode = _TIFFSwab64BitData; |
| else if (td->td_bitspersample == 128) /* two 64's */ |
| tif->tif_postdecode = _TIFFSwab64BitData; |
| } |
| break; |
| case TIFFTAG_COMPRESSION: |
| v = (uint16_t)va_arg(ap, uint16_vap); |
| /* |
| * If we're changing the compression scheme, notify the |
| * previous module so that it can cleanup any state it's |
| * setup. |
| */ |
| if (TIFFFieldSet(tif, FIELD_COMPRESSION)) |
| { |
| if ((uint32_t)td->td_compression == v) |
| break; |
| (*tif->tif_cleanup)(tif); |
| tif->tif_flags &= ~TIFF_CODERSETUP; |
| } |
| /* |
| * Setup new compression routine state. |
| */ |
| if ((status = TIFFSetCompressionScheme(tif, v)) != 0) |
| td->td_compression = (uint16_t)v; |
| else |
| status = 0; |
| break; |
| case TIFFTAG_PHOTOMETRIC: |
| td->td_photometric = (uint16_t)va_arg(ap, uint16_vap); |
| break; |
| case TIFFTAG_THRESHHOLDING: |
| td->td_threshholding = (uint16_t)va_arg(ap, uint16_vap); |
| break; |
| case TIFFTAG_FILLORDER: |
| v = (uint16_t)va_arg(ap, uint16_vap); |
| if (v != FILLORDER_LSB2MSB && v != FILLORDER_MSB2LSB) |
| goto badvalue; |
| td->td_fillorder = (uint16_t)v; |
| break; |
| case TIFFTAG_ORIENTATION: |
| v = (uint16_t)va_arg(ap, uint16_vap); |
| if (v < ORIENTATION_TOPLEFT || ORIENTATION_LEFTBOT < v) |
| goto badvalue; |
| else |
| td->td_orientation = (uint16_t)v; |
| break; |
| case TIFFTAG_SAMPLESPERPIXEL: |
| v = (uint16_t)va_arg(ap, uint16_vap); |
| if (v == 0) |
| goto badvalue; |
| if (v != td->td_samplesperpixel) |
| { |
| /* See http://bugzilla.maptools.org/show_bug.cgi?id=2500 */ |
| if (td->td_sminsamplevalue != NULL) |
| { |
| TIFFWarningExtR(tif, module, |
| "SamplesPerPixel tag value is changing, " |
| "but SMinSampleValue tag was read with a " |
| "different value. Canceling it"); |
| TIFFClrFieldBit(tif, FIELD_SMINSAMPLEVALUE); |
| _TIFFfreeExt(tif, td->td_sminsamplevalue); |
| td->td_sminsamplevalue = NULL; |
| } |
| if (td->td_smaxsamplevalue != NULL) |
| { |
| TIFFWarningExtR(tif, module, |
| "SamplesPerPixel tag value is changing, " |
| "but SMaxSampleValue tag was read with a " |
| "different value. Canceling it"); |
| TIFFClrFieldBit(tif, FIELD_SMAXSAMPLEVALUE); |
| _TIFFfreeExt(tif, td->td_smaxsamplevalue); |
| td->td_smaxsamplevalue = NULL; |
| } |
| /* Test if 3 transfer functions instead of just one are now |
| needed See http://bugzilla.maptools.org/show_bug.cgi?id=2820 |
| */ |
| if (td->td_transferfunction[0] != NULL && |
| (v - td->td_extrasamples > 1) && |
| !(td->td_samplesperpixel - td->td_extrasamples > 1)) |
| { |
| TIFFWarningExtR(tif, module, |
| "SamplesPerPixel tag value is changing, " |
| "but TransferFunction was read with a " |
| "different value. Canceling it"); |
| TIFFClrFieldBit(tif, FIELD_TRANSFERFUNCTION); |
| _TIFFfreeExt(tif, td->td_transferfunction[0]); |
| td->td_transferfunction[0] = NULL; |
| } |
| } |
| td->td_samplesperpixel = (uint16_t)v; |
| break; |
| case TIFFTAG_ROWSPERSTRIP: |
| v32 = (uint32_t)va_arg(ap, uint32_t); |
| if (v32 == 0) |
| goto badvalue32; |
| td->td_rowsperstrip = v32; |
| if (!TIFFFieldSet(tif, FIELD_TILEDIMENSIONS)) |
| { |
| td->td_tilelength = v32; |
| td->td_tilewidth = td->td_imagewidth; |
| } |
| break; |
| case TIFFTAG_MINSAMPLEVALUE: |
| td->td_minsamplevalue = (uint16_t)va_arg(ap, uint16_vap); |
| break; |
| case TIFFTAG_MAXSAMPLEVALUE: |
| td->td_maxsamplevalue = (uint16_t)va_arg(ap, uint16_vap); |
| break; |
| case TIFFTAG_SMINSAMPLEVALUE: |
| if (tif->tif_flags & TIFF_PERSAMPLE) |
| _TIFFsetDoubleArrayExt(tif, &td->td_sminsamplevalue, |
| va_arg(ap, double *), |
| td->td_samplesperpixel); |
| else |
| setDoubleArrayOneValue(tif, &td->td_sminsamplevalue, |
| va_arg(ap, double), |
| td->td_samplesperpixel); |
| break; |
| case TIFFTAG_SMAXSAMPLEVALUE: |
| if (tif->tif_flags & TIFF_PERSAMPLE) |
| _TIFFsetDoubleArrayExt(tif, &td->td_smaxsamplevalue, |
| va_arg(ap, double *), |
| td->td_samplesperpixel); |
| else |
| setDoubleArrayOneValue(tif, &td->td_smaxsamplevalue, |
| va_arg(ap, double), |
| td->td_samplesperpixel); |
| break; |
| case TIFFTAG_XRESOLUTION: |
| dblval = va_arg(ap, double); |
| if (dblval != dblval || dblval < 0) |
| goto badvaluedouble; |
| td->td_xresolution = _TIFFClampDoubleToFloat(dblval); |
| break; |
| case TIFFTAG_YRESOLUTION: |
| dblval = va_arg(ap, double); |
| if (dblval != dblval || dblval < 0) |
| goto badvaluedouble; |
| td->td_yresolution = _TIFFClampDoubleToFloat(dblval); |
| break; |
| case TIFFTAG_PLANARCONFIG: |
| v = (uint16_t)va_arg(ap, uint16_vap); |
| if (v != PLANARCONFIG_CONTIG && v != PLANARCONFIG_SEPARATE) |
| goto badvalue; |
| td->td_planarconfig = (uint16_t)v; |
| break; |
| case TIFFTAG_XPOSITION: |
| td->td_xposition = _TIFFClampDoubleToFloat(va_arg(ap, double)); |
| break; |
| case TIFFTAG_YPOSITION: |
| td->td_yposition = _TIFFClampDoubleToFloat(va_arg(ap, double)); |
| break; |
| case TIFFTAG_RESOLUTIONUNIT: |
| v = (uint16_t)va_arg(ap, uint16_vap); |
| if (v < RESUNIT_NONE || RESUNIT_CENTIMETER < v) |
| goto badvalue; |
| td->td_resolutionunit = (uint16_t)v; |
| break; |
| case TIFFTAG_PAGENUMBER: |
| td->td_pagenumber[0] = (uint16_t)va_arg(ap, uint16_vap); |
| td->td_pagenumber[1] = (uint16_t)va_arg(ap, uint16_vap); |
| break; |
| case TIFFTAG_HALFTONEHINTS: |
| td->td_halftonehints[0] = (uint16_t)va_arg(ap, uint16_vap); |
| td->td_halftonehints[1] = (uint16_t)va_arg(ap, uint16_vap); |
| break; |
| case TIFFTAG_COLORMAP: |
| v32 = (uint32_t)(1L << td->td_bitspersample); |
| _TIFFsetShortArrayExt(tif, &td->td_colormap[0], |
| va_arg(ap, uint16_t *), v32); |
| _TIFFsetShortArrayExt(tif, &td->td_colormap[1], |
| va_arg(ap, uint16_t *), v32); |
| _TIFFsetShortArrayExt(tif, &td->td_colormap[2], |
| va_arg(ap, uint16_t *), v32); |
| break; |
| case TIFFTAG_EXTRASAMPLES: |
| if (!setExtraSamples(tif, ap, &v)) |
| goto badvalue; |
| break; |
| case TIFFTAG_MATTEING: |
| td->td_extrasamples = (((uint16_t)va_arg(ap, uint16_vap)) != 0); |
| if (td->td_extrasamples) |
| { |
| uint16_t sv = EXTRASAMPLE_ASSOCALPHA; |
| _TIFFsetShortArrayExt(tif, &td->td_sampleinfo, &sv, 1); |
| } |
| break; |
| case TIFFTAG_TILEWIDTH: |
| v32 = (uint32_t)va_arg(ap, uint32_t); |
| if (v32 % 16) |
| { |
| if (tif->tif_mode != O_RDONLY) |
| goto badvalue32; |
| TIFFWarningExtR( |
| tif, tif->tif_name, |
| "Nonstandard tile width %" PRIu32 ", convert file", v32); |
| } |
| td->td_tilewidth = v32; |
| tif->tif_flags |= TIFF_ISTILED; |
| break; |
| case TIFFTAG_TILELENGTH: |
| v32 = (uint32_t)va_arg(ap, uint32_t); |
| if (v32 % 16) |
| { |
| if (tif->tif_mode != O_RDONLY) |
| goto badvalue32; |
| TIFFWarningExtR( |
| tif, tif->tif_name, |
| "Nonstandard tile length %" PRIu32 ", convert file", v32); |
| } |
| td->td_tilelength = v32; |
| tif->tif_flags |= TIFF_ISTILED; |
| break; |
| case TIFFTAG_TILEDEPTH: |
| v32 = (uint32_t)va_arg(ap, uint32_t); |
| if (v32 == 0) |
| goto badvalue32; |
| td->td_tiledepth = v32; |
| break; |
| case TIFFTAG_DATATYPE: |
| v = (uint16_t)va_arg(ap, uint16_vap); |
| switch (v) |
| { |
| case DATATYPE_VOID: |
| v = SAMPLEFORMAT_VOID; |
| break; |
| case DATATYPE_INT: |
| v = SAMPLEFORMAT_INT; |
| break; |
| case DATATYPE_UINT: |
| v = SAMPLEFORMAT_UINT; |
| break; |
| case DATATYPE_IEEEFP: |
| v = SAMPLEFORMAT_IEEEFP; |
| break; |
| default: |
| goto badvalue; |
| } |
| td->td_sampleformat = (uint16_t)v; |
| break; |
| case TIFFTAG_SAMPLEFORMAT: |
| v = (uint16_t)va_arg(ap, uint16_vap); |
| if (v < SAMPLEFORMAT_UINT || SAMPLEFORMAT_COMPLEXIEEEFP < v) |
| goto badvalue; |
| td->td_sampleformat = (uint16_t)v; |
| |
| /* Try to fix up the SWAB function for complex data. */ |
| if (td->td_sampleformat == SAMPLEFORMAT_COMPLEXINT && |
| td->td_bitspersample == 32 && |
| tif->tif_postdecode == _TIFFSwab32BitData) |
| tif->tif_postdecode = _TIFFSwab16BitData; |
| else if ((td->td_sampleformat == SAMPLEFORMAT_COMPLEXINT || |
| td->td_sampleformat == SAMPLEFORMAT_COMPLEXIEEEFP) && |
| td->td_bitspersample == 64 && |
| tif->tif_postdecode == _TIFFSwab64BitData) |
| tif->tif_postdecode = _TIFFSwab32BitData; |
| break; |
| case TIFFTAG_IMAGEDEPTH: |
| td->td_imagedepth = (uint32_t)va_arg(ap, uint32_t); |
| break; |
| case TIFFTAG_SUBIFD: |
| if ((tif->tif_flags & TIFF_INSUBIFD) == 0) |
| { |
| td->td_nsubifd = (uint16_t)va_arg(ap, uint16_vap); |
| _TIFFsetLong8Array(tif, &td->td_subifd, |
| (uint64_t *)va_arg(ap, uint64_t *), |
| (uint32_t)td->td_nsubifd); |
| } |
| else |
| { |
| TIFFErrorExtR(tif, module, "%s: Sorry, cannot nest SubIFDs", |
| tif->tif_name); |
| status = 0; |
| } |
| break; |
| case TIFFTAG_YCBCRPOSITIONING: |
| td->td_ycbcrpositioning = (uint16_t)va_arg(ap, uint16_vap); |
| break; |
| case TIFFTAG_YCBCRSUBSAMPLING: |
| td->td_ycbcrsubsampling[0] = (uint16_t)va_arg(ap, uint16_vap); |
| td->td_ycbcrsubsampling[1] = (uint16_t)va_arg(ap, uint16_vap); |
| break; |
| case TIFFTAG_TRANSFERFUNCTION: |
| { |
| uint32_t i; |
| v = (td->td_samplesperpixel - td->td_extrasamples) > 1 ? 3 : 1; |
| for (i = 0; i < v; i++) |
| _TIFFsetShortArrayExt(tif, &td->td_transferfunction[i], |
| va_arg(ap, uint16_t *), |
| 1U << td->td_bitspersample); |
| break; |
| } |
| case TIFFTAG_REFERENCEBLACKWHITE: |
| /* XXX should check for null range */ |
| _TIFFsetFloatArrayExt(tif, &td->td_refblackwhite, |
| va_arg(ap, float *), 6); |
| break; |
| case TIFFTAG_INKNAMES: |
| { |
| v = (uint16_t)va_arg(ap, uint16_vap); |
| s = va_arg(ap, char *); |
| uint16_t ninksinstring; |
| ninksinstring = countInkNamesString(tif, v, s); |
| status = ninksinstring > 0; |
| if (ninksinstring > 0) |
| { |
| _TIFFsetNString(tif, &td->td_inknames, s, v); |
| td->td_inknameslen = v; |
| /* Set NumberOfInks to the value ninksinstring */ |
| if (TIFFFieldSet(tif, FIELD_NUMBEROFINKS)) |
| { |
| if (td->td_numberofinks != ninksinstring) |
| { |
| TIFFErrorExtR( |
| tif, module, |
| "Warning %s; Tag %s:\n Value %" PRIu16 |
| " of NumberOfInks is different from the number of " |
| "inks %" PRIu16 |
| ".\n -> NumberOfInks value adapted to %" PRIu16 "", |
| tif->tif_name, fip->field_name, td->td_numberofinks, |
| ninksinstring, ninksinstring); |
| td->td_numberofinks = ninksinstring; |
| } |
| } |
| else |
| { |
| td->td_numberofinks = ninksinstring; |
| TIFFSetFieldBit(tif, FIELD_NUMBEROFINKS); |
| } |
| if (TIFFFieldSet(tif, FIELD_SAMPLESPERPIXEL)) |
| { |
| if (td->td_numberofinks != td->td_samplesperpixel) |
| { |
| TIFFErrorExtR(tif, module, |
| "Warning %s; Tag %s:\n Value %" PRIu16 |
| " of NumberOfInks is different from the " |
| "SamplesPerPixel value %" PRIu16 "", |
| tif->tif_name, fip->field_name, |
| td->td_numberofinks, |
| td->td_samplesperpixel); |
| } |
| } |
| } |
| } |
| break; |
| case TIFFTAG_NUMBEROFINKS: |
| v = (uint16_t)va_arg(ap, uint16_vap); |
| /* If InkNames already set also NumberOfInks is set accordingly and |
| * should be equal */ |
| if (TIFFFieldSet(tif, FIELD_INKNAMES)) |
| { |
| if (v != td->td_numberofinks) |
| { |
| TIFFErrorExtR( |
| tif, module, |
| "Error %s; Tag %s:\n It is not possible to set the " |
| "value %" PRIu32 |
| " for NumberOfInks\n which is different from the " |
| "number of inks in the InkNames tag (%" PRIu16 ")", |
| tif->tif_name, fip->field_name, v, td->td_numberofinks); |
| /* Do not set / overwrite number of inks already set by |
| * InkNames case accordingly. */ |
| status = 0; |
| } |
| } |
| else |
| { |
| td->td_numberofinks = (uint16_t)v; |
| if (TIFFFieldSet(tif, FIELD_SAMPLESPERPIXEL)) |
| { |
| if (td->td_numberofinks != td->td_samplesperpixel) |
| { |
| TIFFErrorExtR(tif, module, |
| "Warning %s; Tag %s:\n Value %" PRIu32 |
| " of NumberOfInks is different from the " |
| "SamplesPerPixel value %" PRIu16 "", |
| tif->tif_name, fip->field_name, v, |
| td->td_samplesperpixel); |
| } |
| } |
| } |
| break; |
| case TIFFTAG_PERSAMPLE: |
| v = (uint16_t)va_arg(ap, uint16_vap); |
| if (v == PERSAMPLE_MULTI) |
| tif->tif_flags |= TIFF_PERSAMPLE; |
| else |
| tif->tif_flags &= ~TIFF_PERSAMPLE; |
| break; |
| default: |
| { |
| TIFFTagValue *tv; |
| int tv_size, iCustom; |
| |
| /* |
| * This can happen if multiple images are open with different |
| * codecs which have private tags. The global tag information |
| * table may then have tags that are valid for one file but not |
| * the other. If the client tries to set a tag that is not valid |
| * for the image's codec then we'll arrive here. This |
| * happens, for example, when tiffcp is used to convert between |
| * compression schemes and codec-specific tags are blindly copied. |
| * |
| * This also happens when a FIELD_IGNORE tag is written. |
| */ |
| if (fip->field_bit == FIELD_IGNORE) |
| { |
| TIFFErrorExtR( |
| tif, module, |
| "%s: Ignored %stag \"%s\" (not supported by libtiff)", |
| tif->tif_name, isPseudoTag(tag) ? "pseudo-" : "", |
| fip->field_name); |
| status = 0; |
| break; |
| } |
| if (fip->field_bit != FIELD_CUSTOM) |
| { |
| TIFFErrorExtR( |
| tif, module, |
| "%s: Invalid %stag \"%s\" (not supported by codec)", |
| tif->tif_name, isPseudoTag(tag) ? "pseudo-" : "", |
| fip->field_name); |
| status = 0; |
| break; |
| } |
| |
| /* |
| * Find the existing entry for this custom value. |
| */ |
| tv = NULL; |
| for (iCustom = 0; iCustom < td->td_customValueCount; iCustom++) |
| { |
| if (td->td_customValues[iCustom].info->field_tag == tag) |
| { |
| tv = td->td_customValues + iCustom; |
| if (tv->value != NULL) |
| { |
| _TIFFfreeExt(tif, tv->value); |
| tv->value = NULL; |
| } |
| break; |
| } |
| } |
| |
| /* |
| * Grow the custom list if the entry was not found. |
| */ |
| if (tv == NULL) |
| { |
| TIFFTagValue *new_customValues; |
| |
| td->td_customValueCount++; |
| new_customValues = (TIFFTagValue *)_TIFFreallocExt( |
| tif, td->td_customValues, |
| sizeof(TIFFTagValue) * td->td_customValueCount); |
| if (!new_customValues) |
| { |
| TIFFErrorExtR(tif, module, |
| "%s: Failed to allocate space for list of " |
| "custom values", |
| tif->tif_name); |
| status = 0; |
| goto end; |
| } |
| |
| td->td_customValues = new_customValues; |
| |
| tv = td->td_customValues + (td->td_customValueCount - 1); |
| tv->info = fip; |
| tv->value = NULL; |
| tv->count = 0; |
| } |
| |
| /* |
| * Set custom value ... save a copy of the custom tag value. |
| */ |
| /*--: Rational2Double: For Rationals evaluate "set_field_type" to |
| * determine internal storage size. */ |
| tv_size = TIFFFieldSetGetSize(fip); |
| if (tv_size == 0) |
| { |
| status = 0; |
| TIFFErrorExtR(tif, module, "%s: Bad field type %d for \"%s\"", |
| tif->tif_name, fip->field_type, fip->field_name); |
| goto end; |
| } |
| |
| if (fip->field_type == TIFF_ASCII) |
| { |
| uint32_t ma; |
| const char *mb; |
| if (fip->field_passcount) |
| { |
| assert(fip->field_writecount == TIFF_VARIABLE2); |
| ma = (uint32_t)va_arg(ap, uint32_t); |
| mb = (const char *)va_arg(ap, const char *); |
| } |
| else |
| { |
| mb = (const char *)va_arg(ap, const char *); |
| size_t len = strlen(mb) + 1; |
| if (len >= 0x80000000U) |
| { |
| status = 0; |
| TIFFErrorExtR(tif, module, |
| "%s: Too long string value for \"%s\". " |
| "Maximum supported is 2147483647 bytes", |
| tif->tif_name, fip->field_name); |
| goto end; |
| } |
| ma = (uint32_t)len; |
| } |
| tv->count = ma; |
| setByteArray(tif, &tv->value, mb, ma, 1); |
| } |
| else |
| { |
| if (fip->field_passcount) |
| { |
| if (fip->field_writecount == TIFF_VARIABLE2) |
| tv->count = (uint32_t)va_arg(ap, uint32_t); |
| else |
| tv->count = (int)va_arg(ap, int); |
| } |
| else if (fip->field_writecount == TIFF_VARIABLE || |
| fip->field_writecount == TIFF_VARIABLE2) |
| tv->count = 1; |
| else if (fip->field_writecount == TIFF_SPP) |
| tv->count = td->td_samplesperpixel; |
| else |
| tv->count = fip->field_writecount; |
| |
| if (tv->count == 0) |
| { |
| status = 0; |
| TIFFErrorExtR(tif, module, |
| "%s: Null count for \"%s\" (type " |
| "%d, writecount %d, passcount %d)", |
| tif->tif_name, fip->field_name, |
| fip->field_type, fip->field_writecount, |
| fip->field_passcount); |
| goto end; |
| } |
| |
| tv->value = _TIFFCheckMalloc(tif, tv->count, tv_size, |
| "custom tag binary object"); |
| if (!tv->value) |
| { |
| status = 0; |
| goto end; |
| } |
| |
| if (fip->field_tag == TIFFTAG_DOTRANGE && |
| strcmp(fip->field_name, "DotRange") == 0) |
| { |
| /* TODO: This is an evil exception and should not have been |
| handled this way ... likely best if we move it into |
| the directory structure with an explicit field in |
| libtiff 4.1 and assign it a FIELD_ value */ |
| uint16_t v2[2]; |
| v2[0] = (uint16_t)va_arg(ap, int); |
| v2[1] = (uint16_t)va_arg(ap, int); |
| _TIFFmemcpy(tv->value, &v2, 4); |
| } |
| |
| else if (fip->field_passcount || |
| fip->field_writecount == TIFF_VARIABLE || |
| fip->field_writecount == TIFF_VARIABLE2 || |
| fip->field_writecount == TIFF_SPP || tv->count > 1) |
| { |
| /*--: Rational2Double: For Rationals tv_size is set above to |
| * 4 or 8 according to fip->set_field_type! */ |
| _TIFFmemcpy(tv->value, va_arg(ap, void *), |
| tv->count * tv_size); |
| /* Test here for too big values for LONG8, SLONG8 in |
| * ClassicTIFF and delete custom field from custom list */ |
| if (!(tif->tif_flags & TIFF_BIGTIFF)) |
| { |
| if (tv->info->field_type == TIFF_LONG8) |
| { |
| uint64_t *pui64 = (uint64_t *)tv->value; |
| for (int i = 0; i < tv->count; i++) |
| { |
| if (pui64[i] > 0xffffffffu) |
| { |
| TIFFErrorExtR( |
| tif, module, |
| "%s: Bad LONG8 value %" PRIu64 |
| " at %d. array position for \"%s\" tag " |
| "%d in ClassicTIFF. Tag won't be " |
| "written to file", |
| tif->tif_name, pui64[i], i, |
| fip->field_name, tag); |
| goto badvalueifd8long8; |
| } |
| } |
| } |
| else if (tv->info->field_type == TIFF_SLONG8) |
| { |
| int64_t *pi64 = (int64_t *)tv->value; |
| for (int i = 0; i < tv->count; i++) |
| { |
| if (pi64[i] > 2147483647 || |
| pi64[i] < (-2147483647 - 1)) |
| { |
| TIFFErrorExtR( |
| tif, module, |
| "%s: Bad SLONG8 value %" PRIi64 |
| " at %d. array position for \"%s\" tag " |
| "%d in ClassicTIFF. Tag won't be " |
| "written to file", |
| tif->tif_name, pi64[i], i, |
| fip->field_name, tag); |
| goto badvalueifd8long8; |
| } |
| } |
| } |
| } |
| } |
| else |
| { |
| char *val = (char *)tv->value; |
| assert(tv->count == 1); |
| |
| switch (fip->field_type) |
| { |
| case TIFF_BYTE: |
| case TIFF_UNDEFINED: |
| { |
| uint8_t v2 = (uint8_t)va_arg(ap, int); |
| _TIFFmemcpy(val, &v2, tv_size); |
| } |
| break; |
| case TIFF_SBYTE: |
| { |
| int8_t v2 = (int8_t)va_arg(ap, int); |
| _TIFFmemcpy(val, &v2, tv_size); |
| } |
| break; |
| case TIFF_SHORT: |
| { |
| uint16_t v2 = (uint16_t)va_arg(ap, int); |
| _TIFFmemcpy(val, &v2, tv_size); |
| } |
| break; |
| case TIFF_SSHORT: |
| { |
| int16_t v2 = (int16_t)va_arg(ap, int); |
| _TIFFmemcpy(val, &v2, tv_size); |
| } |
| break; |
| case TIFF_LONG: |
| case TIFF_IFD: |
| { |
| uint32_t v2 = va_arg(ap, uint32_t); |
| _TIFFmemcpy(val, &v2, tv_size); |
| } |
| break; |
| case TIFF_SLONG: |
| { |
| int32_t v2 = va_arg(ap, int32_t); |
| _TIFFmemcpy(val, &v2, tv_size); |
| } |
| break; |
| case TIFF_LONG8: |
| case TIFF_IFD8: |
| { |
| uint64_t v2 = va_arg(ap, uint64_t); |
| _TIFFmemcpy(val, &v2, tv_size); |
| /* Test here for too big values for ClassicTIFF and |
| * delete custom field from custom list */ |
| if (!(tif->tif_flags & TIFF_BIGTIFF) && |
| (v2 > 0xffffffffu)) |
| { |
| TIFFErrorExtR( |
| tif, module, |
| "%s: Bad LONG8 or IFD8 value %" PRIu64 |
| " for \"%s\" tag %d in ClassicTIFF. Tag " |
| "won't be written to file", |
| tif->tif_name, v2, fip->field_name, tag); |
| goto badvalueifd8long8; |
| } |
| } |
| break; |
| case TIFF_SLONG8: |
| { |
| int64_t v2 = va_arg(ap, int64_t); |
| _TIFFmemcpy(val, &v2, tv_size); |
| /* Test here for too big values for ClassicTIFF and |
| * delete custom field from custom list */ |
| if (!(tif->tif_flags & TIFF_BIGTIFF) && |
| ((v2 > 2147483647) || (v2 < (-2147483647 - 1)))) |
| { |
| TIFFErrorExtR( |
| tif, module, |
| "%s: Bad SLONG8 value %" PRIi64 |
| " for \"%s\" tag %d in ClassicTIFF. Tag " |
| "won't be written to file", |
| tif->tif_name, v2, fip->field_name, tag); |
| goto badvalueifd8long8; |
| } |
| } |
| break; |
| case TIFF_RATIONAL: |
| case TIFF_SRATIONAL: |
| /*-- Rational2Double: For Rationals tv_size is set |
| * above to 4 or 8 according to fip->set_field_type! |
| */ |
| { |
| if (tv_size == 8) |
| { |
| double v2 = va_arg(ap, double); |
| _TIFFmemcpy(val, &v2, tv_size); |
| } |
| else |
| { |
| /*-- default should be tv_size == 4 */ |
| float v3 = (float)va_arg(ap, double); |
| _TIFFmemcpy(val, &v3, tv_size); |
| /*-- ToDo: After Testing, this should be |
| * removed and tv_size==4 should be set as |
| * default. */ |
| if (tv_size != 4) |
| { |
| TIFFErrorExtR( |
| tif, module, |
| "Rational2Double: .set_field_type " |
| "in not 4 but %d", |
| tv_size); |
| } |
| } |
| } |
| break; |
| case TIFF_FLOAT: |
| { |
| float v2 = |
| _TIFFClampDoubleToFloat(va_arg(ap, double)); |
| _TIFFmemcpy(val, &v2, tv_size); |
| } |
| break; |
| case TIFF_DOUBLE: |
| { |
| double v2 = va_arg(ap, double); |
| _TIFFmemcpy(val, &v2, tv_size); |
| } |
| break; |
| default: |
| _TIFFmemset(val, 0, tv_size); |
| status = 0; |
| break; |
| } |
| } |
| } |
| } |
| } |
| if (status) |
| { |
| const TIFFField *fip2 = TIFFFieldWithTag(tif, tag); |
| if (fip2) |
| TIFFSetFieldBit(tif, fip2->field_bit); |
| tif->tif_flags |= TIFF_DIRTYDIRECT; |
| } |
| |
| end: |
| va_end(ap); |
| return (status); |
| badvalue: |
| { |
| const TIFFField *fip2 = TIFFFieldWithTag(tif, tag); |
| TIFFErrorExtR(tif, module, "%s: Bad value %" PRIu32 " for \"%s\" tag", |
| tif->tif_name, v, fip2 ? fip2->field_name : "Unknown"); |
| va_end(ap); |
| } |
| return (0); |
| badvalue32: |
| { |
| const TIFFField *fip2 = TIFFFieldWithTag(tif, tag); |
| TIFFErrorExtR(tif, module, "%s: Bad value %" PRIu32 " for \"%s\" tag", |
| tif->tif_name, v32, fip2 ? fip2->field_name : "Unknown"); |
| va_end(ap); |
| } |
| return (0); |
| badvaluedouble: |
| { |
| const TIFFField *fip2 = TIFFFieldWithTag(tif, tag); |
| TIFFErrorExtR(tif, module, "%s: Bad value %f for \"%s\" tag", tif->tif_name, |
| dblval, fip2 ? fip2->field_name : "Unknown"); |
| va_end(ap); |
| } |
| return (0); |
| badvalueifd8long8: |
| { |
| /* Error message issued already above. */ |
| TIFFTagValue *tv2 = NULL; |
| int iCustom2, iC2; |
| /* Find the existing entry for this custom value. */ |
| for (iCustom2 = 0; iCustom2 < td->td_customValueCount; iCustom2++) |
| { |
| if (td->td_customValues[iCustom2].info->field_tag == tag) |
| { |
| tv2 = td->td_customValues + (iCustom2); |
| break; |
| } |
| } |
| if (tv2 != NULL) |
| { |
| /* Remove custom field from custom list */ |
| if (tv2->value != NULL) |
| { |
| _TIFFfreeExt(tif, tv2->value); |
| tv2->value = NULL; |
| } |
| /* Shorten list and close gap in customValues list. |
| * Re-allocation of td_customValues not necessary here. */ |
| td->td_customValueCount--; |
| for (iC2 = iCustom2; iC2 < td->td_customValueCount; iC2++) |
| { |
| td->td_customValues[iC2] = td->td_customValues[iC2 + 1]; |
| } |
| } |
| else |
| { |
| assert(0); |
| } |
| va_end(ap); |
| } |
| return (0); |
| } /*-- _TIFFVSetField() --*/ |
| |
| /* |
| * Return 1/0 according to whether or not |
| * it is permissible to set the tag's value. |
| * Note that we allow ImageLength to be changed |
| * so that we can append and extend to images. |
| * Any other tag may not be altered once writing |
| * has commenced, unless its value has no effect |
| * on the format of the data that is written. |
| */ |
| static int OkToChangeTag(TIFF *tif, uint32_t tag) |
| { |
| const TIFFField *fip = TIFFFindField(tif, tag, TIFF_ANY); |
| if (!fip) |
| { /* unknown tag */ |
| TIFFErrorExtR(tif, "TIFFSetField", "%s: Unknown %stag %" PRIu32, |
| tif->tif_name, isPseudoTag(tag) ? "pseudo-" : "", tag); |
| return (0); |
| } |
| if (tag != TIFFTAG_IMAGELENGTH && (tif->tif_flags & TIFF_BEENWRITING) && |
| !fip->field_oktochange) |
| { |
| /* |
| * Consult info table to see if tag can be changed |
| * after we've started writing. We only allow changes |
| * to those tags that don't/shouldn't affect the |
| * compression and/or format of the data. |
| */ |
| TIFFErrorExtR(tif, "TIFFSetField", |
| "%s: Cannot modify tag \"%s\" while writing", |
| tif->tif_name, fip->field_name); |
| return (0); |
| } |
| return (1); |
| } |
| |
| /* |
| * Record the value of a field in the |
| * internal directory structure. The |
| * field will be written to the file |
| * when/if the directory structure is |
| * updated. |
| */ |
| int TIFFSetField(TIFF *tif, uint32_t tag, ...) |
| { |
| va_list ap; |
| int status; |
| |
| va_start(ap, tag); |
| status = TIFFVSetField(tif, tag, ap); |
| va_end(ap); |
| return (status); |
| } |
| |
| /* |
| * Clear the contents of the field in the internal structure. |
| */ |
| int TIFFUnsetField(TIFF *tif, uint32_t tag) |
| { |
| const TIFFField *fip = TIFFFieldWithTag(tif, tag); |
| TIFFDirectory *td = &tif->tif_dir; |
| |
| if (!fip) |
| return 0; |
| |
| if (fip->field_bit != FIELD_CUSTOM) |
| TIFFClrFieldBit(tif, fip->field_bit); |
| else |
| { |
| TIFFTagValue *tv = NULL; |
| int i; |
| |
| for (i = 0; i < td->td_customValueCount; i++) |
| { |
| |
| tv = td->td_customValues + i; |
| if (tv->info->field_tag == tag) |
| break; |
| } |
| |
| if (i < td->td_customValueCount) |
| { |
| _TIFFfreeExt(tif, tv->value); |
| for (; i < td->td_customValueCount - 1; i++) |
| { |
| td->td_customValues[i] = td->td_customValues[i + 1]; |
| } |
| td->td_customValueCount--; |
| } |
| } |
| |
| tif->tif_flags |= TIFF_DIRTYDIRECT; |
| |
| return (1); |
| } |
| |
| /* |
| * Like TIFFSetField, but taking a varargs |
| * parameter list. This routine is useful |
| * for building higher-level interfaces on |
| * top of the library. |
| */ |
| int TIFFVSetField(TIFF *tif, uint32_t tag, va_list ap) |
| { |
| return OkToChangeTag(tif, tag) |
| ? (*tif->tif_tagmethods.vsetfield)(tif, tag, ap) |
| : 0; |
| } |
| |
| static int _TIFFVGetField(TIFF *tif, uint32_t tag, va_list ap) |
| { |
| TIFFDirectory *td = &tif->tif_dir; |
| int ret_val = 1; |
| uint32_t standard_tag = tag; |
| const TIFFField *fip = TIFFFindField(tif, tag, TIFF_ANY); |
| if (fip == NULL) /* cannot happen since TIFFGetField() already checks it */ |
| return 0; |
| |
| /* |
| * We want to force the custom code to be used for custom |
| * fields even if the tag happens to match a well known |
| * one - important for reinterpreted handling of standard |
| * tag values in custom directories (i.e. EXIF) |
| */ |
| if (fip->field_bit == FIELD_CUSTOM) |
| { |
| standard_tag = 0; |
| } |
| |
| switch (standard_tag) |
| { |
| case TIFFTAG_SUBFILETYPE: |
| *va_arg(ap, uint32_t *) = td->td_subfiletype; |
| break; |
| case TIFFTAG_IMAGEWIDTH: |
| *va_arg(ap, uint32_t *) = td->td_imagewidth; |
| break; |
| case TIFFTAG_IMAGELENGTH: |
| *va_arg(ap, uint32_t *) = td->td_imagelength; |
| break; |
| case TIFFTAG_BITSPERSAMPLE: |
| *va_arg(ap, uint16_t *) = td->td_bitspersample; |
| break; |
| case TIFFTAG_COMPRESSION: |
| *va_arg(ap, uint16_t *) = td->td_compression; |
| break; |
| case TIFFTAG_PHOTOMETRIC: |
| *va_arg(ap, uint16_t *) = td->td_photometric; |
| break; |
| case TIFFTAG_THRESHHOLDING: |
| *va_arg(ap, uint16_t *) = td->td_threshholding; |
| break; |
| case TIFFTAG_FILLORDER: |
| *va_arg(ap, uint16_t *) = td->td_fillorder; |
| break; |
| case TIFFTAG_ORIENTATION: |
| *va_arg(ap, uint16_t *) = td->td_orientation; |
| break; |
| case TIFFTAG_SAMPLESPERPIXEL: |
| *va_arg(ap, uint16_t *) = td->td_samplesperpixel; |
| break; |
| case TIFFTAG_ROWSPERSTRIP: |
| *va_arg(ap, uint32_t *) = td->td_rowsperstrip; |
| break; |
| case TIFFTAG_MINSAMPLEVALUE: |
| *va_arg(ap, uint16_t *) = td->td_minsamplevalue; |
| break; |
| case TIFFTAG_MAXSAMPLEVALUE: |
| *va_arg(ap, uint16_t *) = td->td_maxsamplevalue; |
| break; |
| case TIFFTAG_SMINSAMPLEVALUE: |
| if (tif->tif_flags & TIFF_PERSAMPLE) |
| *va_arg(ap, double **) = td->td_sminsamplevalue; |
| else |
| { |
| /* libtiff historically treats this as a single value. */ |
| uint16_t i; |
| double v = td->td_sminsamplevalue[0]; |
| for (i = 1; i < td->td_samplesperpixel; ++i) |
| if (td->td_sminsamplevalue[i] < v) |
| v = td->td_sminsamplevalue[i]; |
| *va_arg(ap, double *) = v; |
| } |
| break; |
| case TIFFTAG_SMAXSAMPLEVALUE: |
| if (tif->tif_flags & TIFF_PERSAMPLE) |
| *va_arg(ap, double **) = td->td_smaxsamplevalue; |
| else |
| { |
| /* libtiff historically treats this as a single value. */ |
| uint16_t i; |
| double v = td->td_smaxsamplevalue[0]; |
| for (i = 1; i < td->td_samplesperpixel; ++i) |
| if (td->td_smaxsamplevalue[i] > v) |
| v = td->td_smaxsamplevalue[i]; |
| *va_arg(ap, double *) = v; |
| } |
| break; |
| case TIFFTAG_XRESOLUTION: |
| *va_arg(ap, float *) = td->td_xresolution; |
| break; |
| case TIFFTAG_YRESOLUTION: |
| *va_arg(ap, float *) = td->td_yresolution; |
| break; |
| case TIFFTAG_PLANARCONFIG: |
| *va_arg(ap, uint16_t *) = td->td_planarconfig; |
| break; |
| case TIFFTAG_XPOSITION: |
| *va_arg(ap, float *) = td->td_xposition; |
| break; |
| case TIFFTAG_YPOSITION: |
| *va_arg(ap, float *) = td->td_yposition; |
| break; |
| case TIFFTAG_RESOLUTIONUNIT: |
| *va_arg(ap, uint16_t *) = td->td_resolutionunit; |
| break; |
| case TIFFTAG_PAGENUMBER: |
| *va_arg(ap, uint16_t *) = td->td_pagenumber[0]; |
| *va_arg(ap, uint16_t *) = td->td_pagenumber[1]; |
| break; |
| case TIFFTAG_HALFTONEHINTS: |
| *va_arg(ap, uint16_t *) = td->td_halftonehints[0]; |
| *va_arg(ap, uint16_t *) = td->td_halftonehints[1]; |
| break; |
| case TIFFTAG_COLORMAP: |
| *va_arg(ap, const uint16_t **) = td->td_colormap[0]; |
| *va_arg(ap, const uint16_t **) = td->td_colormap[1]; |
| *va_arg(ap, const uint16_t **) = td->td_colormap[2]; |
| break; |
| case TIFFTAG_STRIPOFFSETS: |
| case TIFFTAG_TILEOFFSETS: |
| _TIFFFillStriles(tif); |
| *va_arg(ap, const uint64_t **) = td->td_stripoffset_p; |
| if (td->td_stripoffset_p == NULL) |
| ret_val = 0; |
| break; |
| case TIFFTAG_STRIPBYTECOUNTS: |
| case TIFFTAG_TILEBYTECOUNTS: |
| _TIFFFillStriles(tif); |
| *va_arg(ap, const uint64_t **) = td->td_stripbytecount_p; |
| if (td->td_stripbytecount_p == NULL) |
| ret_val = 0; |
| break; |
| case TIFFTAG_MATTEING: |
| *va_arg(ap, uint16_t *) = |
| (td->td_extrasamples == 1 && |
| td->td_sampleinfo[0] == EXTRASAMPLE_ASSOCALPHA); |
| break; |
| case TIFFTAG_EXTRASAMPLES: |
| *va_arg(ap, uint16_t *) = td->td_extrasamples; |
| *va_arg(ap, const uint16_t **) = td->td_sampleinfo; |
| break; |
| case TIFFTAG_TILEWIDTH: |
| *va_arg(ap, uint32_t *) = td->td_tilewidth; |
| break; |
| case TIFFTAG_TILELENGTH: |
| *va_arg(ap, uint32_t *) = td->td_tilelength; |
| break; |
| case TIFFTAG_TILEDEPTH: |
| *va_arg(ap, uint32_t *) = td->td_tiledepth; |
| break; |
| case TIFFTAG_DATATYPE: |
| switch (td->td_sampleformat) |
| { |
| case SAMPLEFORMAT_UINT: |
| *va_arg(ap, uint16_t *) = DATATYPE_UINT; |
| break; |
| case SAMPLEFORMAT_INT: |
| *va_arg(ap, uint16_t *) = DATATYPE_INT; |
| break; |
| case SAMPLEFORMAT_IEEEFP: |
| *va_arg(ap, uint16_t *) = DATATYPE_IEEEFP; |
| break; |
| case SAMPLEFORMAT_VOID: |
| *va_arg(ap, uint16_t *) = DATATYPE_VOID; |
| break; |
| } |
| break; |
| case TIFFTAG_SAMPLEFORMAT: |
| *va_arg(ap, uint16_t *) = td->td_sampleformat; |
| break; |
| case TIFFTAG_IMAGEDEPTH: |
| *va_arg(ap, uint32_t *) = td->td_imagedepth; |
| break; |
| case TIFFTAG_SUBIFD: |
| *va_arg(ap, uint16_t *) = td->td_nsubifd; |
| *va_arg(ap, const uint64_t **) = td->td_subifd; |
| break; |
| case TIFFTAG_YCBCRPOSITIONING: |
| *va_arg(ap, uint16_t *) = td->td_ycbcrpositioning; |
| break; |
| case TIFFTAG_YCBCRSUBSAMPLING: |
| *va_arg(ap, uint16_t *) = td->td_ycbcrsubsampling[0]; |
| *va_arg(ap, uint16_t *) = td->td_ycbcrsubsampling[1]; |
| break; |
| case TIFFTAG_TRANSFERFUNCTION: |
| *va_arg(ap, const uint16_t **) = td->td_transferfunction[0]; |
| if (td->td_samplesperpixel - td->td_extrasamples > 1) |
| { |
| *va_arg(ap, const uint16_t **) = td->td_transferfunction[1]; |
| *va_arg(ap, const uint16_t **) = td->td_transferfunction[2]; |
| } |
| else |
| { |
| *va_arg(ap, const uint16_t **) = NULL; |
| *va_arg(ap, const uint16_t **) = NULL; |
| } |
| break; |
| case TIFFTAG_REFERENCEBLACKWHITE: |
| *va_arg(ap, const float **) = td->td_refblackwhite; |
| break; |
| case TIFFTAG_INKNAMES: |
| *va_arg(ap, const char **) = td->td_inknames; |
| break; |
| case TIFFTAG_NUMBEROFINKS: |
| *va_arg(ap, uint16_t *) = td->td_numberofinks; |
| break; |
| default: |
| { |
| int i; |
| |
| /* |
| * This can happen if multiple images are open |
| * with different codecs which have private |
| * tags. The global tag information table may |
| * then have tags that are valid for one file |
| * but not the other. If the client tries to |
| * get a tag that is not valid for the image's |
| * codec then we'll arrive here. |
| */ |
| if (fip->field_bit != FIELD_CUSTOM) |
| { |
| TIFFErrorExtR(tif, "_TIFFVGetField", |
| "%s: Invalid %stag \"%s\" " |
| "(not supported by codec)", |
| tif->tif_name, isPseudoTag(tag) ? "pseudo-" : "", |
| fip->field_name); |
| ret_val = 0; |
| break; |
| } |
| |
| /* |
| * Do we have a custom value? |
| */ |
| ret_val = 0; |
| for (i = 0; i < td->td_customValueCount; i++) |
| { |
| TIFFTagValue *tv = td->td_customValues + i; |
| |
| if (tv->info->field_tag != tag) |
| continue; |
| |
| if (fip->field_passcount) |
| { |
| if (fip->field_readcount == TIFF_VARIABLE2) |
| *va_arg(ap, uint32_t *) = (uint32_t)tv->count; |
| else /* Assume TIFF_VARIABLE */ |
| *va_arg(ap, uint16_t *) = (uint16_t)tv->count; |
| *va_arg(ap, const void **) = tv->value; |
| ret_val = 1; |
| } |
| else if (fip->field_tag == TIFFTAG_DOTRANGE && |
| strcmp(fip->field_name, "DotRange") == 0) |
| { |
| /* TODO: This is an evil exception and should not have been |
| handled this way ... likely best if we move it into |
| the directory structure with an explicit field in |
| libtiff 4.1 and assign it a FIELD_ value */ |
| *va_arg(ap, uint16_t *) = ((uint16_t *)tv->value)[0]; |
| *va_arg(ap, uint16_t *) = ((uint16_t *)tv->value)[1]; |
| ret_val = 1; |
| } |
| else |
| { |
| if (fip->field_type == TIFF_ASCII || |
| fip->field_readcount == TIFF_VARIABLE || |
| fip->field_readcount == TIFF_VARIABLE2 || |
| fip->field_readcount == TIFF_SPP || tv->count > 1) |
| { |
| *va_arg(ap, void **) = tv->value; |
| ret_val = 1; |
| } |
| else |
| { |
| char *val = (char *)tv->value; |
| assert(tv->count == 1); |
| switch (fip->field_type) |
| { |
| case TIFF_BYTE: |
| case TIFF_UNDEFINED: |
| *va_arg(ap, uint8_t *) = *(uint8_t *)val; |
| ret_val = 1; |
| break; |
| case TIFF_SBYTE: |
| *va_arg(ap, int8_t *) = *(int8_t *)val; |
| ret_val = 1; |
| break; |
| case TIFF_SHORT: |
| *va_arg(ap, uint16_t *) = *(uint16_t *)val; |
| ret_val = 1; |
| break; |
| case TIFF_SSHORT: |
| *va_arg(ap, int16_t *) = *(int16_t *)val; |
| ret_val = 1; |
| break; |
| case TIFF_LONG: |
| case TIFF_IFD: |
| *va_arg(ap, uint32_t *) = *(uint32_t *)val; |
| ret_val = 1; |
| break; |
| case TIFF_SLONG: |
| *va_arg(ap, int32_t *) = *(int32_t *)val; |
| ret_val = 1; |
| break; |
| case TIFF_LONG8: |
| case TIFF_IFD8: |
| *va_arg(ap, uint64_t *) = *(uint64_t *)val; |
| ret_val = 1; |
| break; |
| case TIFF_SLONG8: |
| *va_arg(ap, int64_t *) = *(int64_t *)val; |
| ret_val = 1; |
| break; |
| case TIFF_RATIONAL: |
| case TIFF_SRATIONAL: |
| { |
| /*-- Rational2Double: For Rationals evaluate |
| * "set_field_type" to determine internal |
| * storage size and return value size. */ |
| int tv_size = TIFFFieldSetGetSize(fip); |
| if (tv_size == 8) |
| { |
| *va_arg(ap, double *) = *(double *)val; |
| ret_val = 1; |
| } |
| else |
| { |
| /*-- default should be tv_size == 4 */ |
| *va_arg(ap, float *) = *(float *)val; |
| ret_val = 1; |
| /*-- ToDo: After Testing, this should be |
| * removed and tv_size==4 should be set as |
| * default. */ |
| if (tv_size != 4) |
| { |
| TIFFErrorExtR( |
| tif, "_TIFFVGetField", |
| "Rational2Double: .set_field_type " |
| "in not 4 but %d", |
| tv_size); |
| } |
| } |
| } |
| break; |
| case TIFF_FLOAT: |
| *va_arg(ap, float *) = *(float *)val; |
| ret_val = 1; |
| break; |
| case TIFF_DOUBLE: |
| *va_arg(ap, double *) = *(double *)val; |
| ret_val = 1; |
| break; |
| default: |
| ret_val = 0; |
| break; |
| } |
| } |
| } |
| break; |
| } |
| } |
| } |
| return (ret_val); |
| } |
| |
| /* |
| * Return the value of a field in the |
| * internal directory structure. |
| */ |
| int TIFFGetField(TIFF *tif, uint32_t tag, ...) |
| { |
| int status; |
| va_list ap; |
| |
| va_start(ap, tag); |
| status = TIFFVGetField(tif, tag, ap); |
| va_end(ap); |
| return (status); |
| } |
| |
| /* |
| * Like TIFFGetField, but taking a varargs |
| * parameter list. This routine is useful |
| * for building higher-level interfaces on |
| * top of the library. |
| */ |
| int TIFFVGetField(TIFF *tif, uint32_t tag, va_list ap) |
| { |
| const TIFFField *fip = TIFFFindField(tif, tag, TIFF_ANY); |
| return (fip && (isPseudoTag(tag) || TIFFFieldSet(tif, fip->field_bit)) |
| ? (*tif->tif_tagmethods.vgetfield)(tif, tag, ap) |
| : 0); |
| } |
| |
| #define CleanupField(member) \ |
| { \ |
| if (td->member) \ |
| { \ |
| _TIFFfreeExt(tif, td->member); \ |
| td->member = 0; \ |
| } \ |
| } |
| |
| /* |
| * Release storage associated with a directory. |
| */ |
| void TIFFFreeDirectory(TIFF *tif) |
| { |
| TIFFDirectory *td = &tif->tif_dir; |
| int i; |
| |
| _TIFFmemset(td->td_fieldsset, 0, sizeof(td->td_fieldsset)); |
| CleanupField(td_sminsamplevalue); |
| CleanupField(td_smaxsamplevalue); |
| CleanupField(td_colormap[0]); |
| CleanupField(td_colormap[1]); |
| CleanupField(td_colormap[2]); |
| CleanupField(td_sampleinfo); |
| CleanupField(td_subifd); |
| CleanupField(td_inknames); |
| CleanupField(td_refblackwhite); |
| CleanupField(td_transferfunction[0]); |
| CleanupField(td_transferfunction[1]); |
| CleanupField(td_transferfunction[2]); |
| CleanupField(td_stripoffset_p); |
| CleanupField(td_stripbytecount_p); |
| td->td_stripoffsetbyteallocsize = 0; |
| TIFFClrFieldBit(tif, FIELD_YCBCRSUBSAMPLING); |
| TIFFClrFieldBit(tif, FIELD_YCBCRPOSITIONING); |
| |
| /* Cleanup custom tag values */ |
| for (i = 0; i < td->td_customValueCount; i++) |
| { |
| if (td->td_customValues[i].value) |
| _TIFFfreeExt(tif, td->td_customValues[i].value); |
| } |
| |
| td->td_customValueCount = 0; |
| CleanupField(td_customValues); |
| |
| _TIFFmemset(&(td->td_stripoffset_entry), 0, sizeof(TIFFDirEntry)); |
| _TIFFmemset(&(td->td_stripbytecount_entry), 0, sizeof(TIFFDirEntry)); |
| |
| /* Reset some internal parameters for IFD data size checking. */ |
| tif->tif_dir.td_dirdatasize_read = 0; |
| tif->tif_dir.td_dirdatasize_write = 0; |
| if (tif->tif_dir.td_dirdatasize_offsets != NULL) |
| { |
| _TIFFfreeExt(tif, tif->tif_dir.td_dirdatasize_offsets); |
| tif->tif_dir.td_dirdatasize_offsets = NULL; |
| tif->tif_dir.td_dirdatasize_Noffsets = 0; |
| } |
| tif->tif_dir.td_iswrittentofile = FALSE; |
| } |
| #undef CleanupField |
| |
| /* |
| * Client Tag extension support (from Niles Ritter). |
| */ |
| static TIFFExtendProc _TIFFextender = (TIFFExtendProc)NULL; |
| |
| TIFFExtendProc TIFFSetTagExtender(TIFFExtendProc extender) |
| { |
| TIFFExtendProc prev = _TIFFextender; |
| _TIFFextender = extender; |
| return (prev); |
| } |
| |
| /* |
| * Setup for a new directory. Should we automatically call |
| * TIFFWriteDirectory() if the current one is dirty? |
| * |
| * The newly created directory will not exist on the file till |
| * TIFFWriteDirectory(), TIFFFlush() or TIFFClose() is called. |
| */ |
| int TIFFCreateDirectory(TIFF *tif) |
| { |
| /* Free previously allocated memory and setup default values. */ |
| TIFFFreeDirectory(tif); |
| TIFFDefaultDirectory(tif); |
| tif->tif_diroff = 0; |
| tif->tif_nextdiroff = 0; |
| tif->tif_curoff = 0; |
| tif->tif_row = (uint32_t)-1; |
| tif->tif_curstrip = (uint32_t)-1; |
| tif->tif_dir.td_iswrittentofile = FALSE; |
| |
| return 0; |
| } |
| |
| int TIFFCreateCustomDirectory(TIFF *tif, const TIFFFieldArray *infoarray) |
| { |
| /* Free previously allocated memory and setup default values. */ |
| TIFFFreeDirectory(tif); |
| TIFFDefaultDirectory(tif); |
| |
| /* |
| * Reset the field definitions to match the application provided list. |
| * Hopefully TIFFDefaultDirectory() won't have done anything irreversible |
| * based on it's assumption this is an image directory. |
| */ |
| _TIFFSetupFields(tif, infoarray); |
| |
| tif->tif_diroff = 0; |
| tif->tif_nextdiroff = 0; |
| tif->tif_curoff = 0; |
| tif->tif_row = (uint32_t)-1; |
| tif->tif_curstrip = (uint32_t)-1; |
| /* invalidate directory index */ |
| tif->tif_curdir = TIFF_NON_EXISTENT_DIR_NUMBER; |
| /* invalidate IFD loop lists */ |
| _TIFFCleanupIFDOffsetAndNumberMaps(tif); |
| /* To be able to return from SubIFD or custom-IFD to main-IFD */ |
| tif->tif_setdirectory_force_absolute = TRUE; |
| |
| return 0; |
| } |
| |
| int TIFFCreateEXIFDirectory(TIFF *tif) |
| { |
| const TIFFFieldArray *exifFieldArray; |
| exifFieldArray = _TIFFGetExifFields(); |
| return TIFFCreateCustomDirectory(tif, exifFieldArray); |
| } |
| |
| /* |
| * Creates the EXIF GPS custom directory |
| */ |
| int TIFFCreateGPSDirectory(TIFF *tif) |
| { |
| const TIFFFieldArray *gpsFieldArray; |
| gpsFieldArray = _TIFFGetGpsFields(); |
| return TIFFCreateCustomDirectory(tif, gpsFieldArray); |
| } |
| |
| /* |
| * Setup a default directory structure. |
| */ |
| int TIFFDefaultDirectory(TIFF *tif) |
| { |
| register TIFFDirectory *td = &tif->tif_dir; |
| const TIFFFieldArray *tiffFieldArray; |
| |
| tiffFieldArray = _TIFFGetFields(); |
| _TIFFSetupFields(tif, tiffFieldArray); |
| |
| _TIFFmemset(td, 0, sizeof(*td)); |
| td->td_fillorder = FILLORDER_MSB2LSB; |
| td->td_bitspersample = 1; |
| td->td_threshholding = THRESHHOLD_BILEVEL; |
| td->td_orientation = ORIENTATION_TOPLEFT; |
| td->td_samplesperpixel = 1; |
| td->td_rowsperstrip = (uint32_t)-1; |
| td->td_tilewidth = 0; |
| td->td_tilelength = 0; |
| td->td_tiledepth = 1; |
| #ifdef STRIPBYTECOUNTSORTED_UNUSED |
| td->td_stripbytecountsorted = 1; /* Our own arrays always sorted. */ |
| #endif |
| td->td_resolutionunit = RESUNIT_INCH; |
| td->td_sampleformat = SAMPLEFORMAT_UINT; |
| td->td_imagedepth = 1; |
| td->td_ycbcrsubsampling[0] = 2; |
| td->td_ycbcrsubsampling[1] = 2; |
| td->td_ycbcrpositioning = YCBCRPOSITION_CENTERED; |
| tif->tif_postdecode = _TIFFNoPostDecode; |
| tif->tif_foundfield = NULL; |
| tif->tif_tagmethods.vsetfield = _TIFFVSetField; |
| tif->tif_tagmethods.vgetfield = _TIFFVGetField; |
| tif->tif_tagmethods.printdir = NULL; |
| /* additional default values */ |
| td->td_planarconfig = PLANARCONFIG_CONTIG; |
| td->td_compression = COMPRESSION_NONE; |
| td->td_subfiletype = 0; |
| td->td_minsamplevalue = 0; |
| /* td_bitspersample=1 is always set in TIFFDefaultDirectory(). |
| * Therefore, td_maxsamplevalue has to be re-calculated in |
| * TIFFGetFieldDefaulted(). */ |
| td->td_maxsamplevalue = 1; /* Default for td_bitspersample=1 */ |
| td->td_extrasamples = 0; |
| td->td_sampleinfo = NULL; |
| |
| /* |
| * Give client code a chance to install their own |
| * tag extensions & methods, prior to compression overloads, |
| * but do some prior cleanup first. |
| * (http://trac.osgeo.org/gdal/ticket/5054) |
| */ |
| if (tif->tif_nfieldscompat > 0) |
| { |
| uint32_t i; |
| |
| for (i = 0; i < tif->tif_nfieldscompat; i++) |
| { |
| if (tif->tif_fieldscompat[i].allocated_size) |
| _TIFFfreeExt(tif, tif->tif_fieldscompat[i].fields); |
| } |
| _TIFFfreeExt(tif, tif->tif_fieldscompat); |
| tif->tif_nfieldscompat = 0; |
| tif->tif_fieldscompat = NULL; |
| } |
| if (_TIFFextender) |
| (*_TIFFextender)(tif); |
| (void)TIFFSetField(tif, TIFFTAG_COMPRESSION, COMPRESSION_NONE); |
| /* |
| * NB: The directory is marked dirty as a result of setting |
| * up the default compression scheme. However, this really |
| * isn't correct -- we want TIFF_DIRTYDIRECT to be set only |
| * if the user does something. We could just do the setup |
| * by hand, but it seems better to use the normal mechanism |
| * (i.e. TIFFSetField). |
| */ |
| tif->tif_flags &= ~TIFF_DIRTYDIRECT; |
| |
| /* |
| * As per http://bugzilla.remotesensing.org/show_bug.cgi?id=19 |
| * we clear the ISTILED flag when setting up a new directory. |
| * Should we also be clearing stuff like INSUBIFD? |
| */ |
| tif->tif_flags &= ~TIFF_ISTILED; |
| |
| return (1); |
| } |
| |
| static int TIFFAdvanceDirectory(TIFF *tif, uint64_t *nextdiroff, uint64_t *off, |
| tdir_t *nextdirnum) |
| { |
| static const char module[] = "TIFFAdvanceDirectory"; |
| |
| /* Add this directory to the directory list, if not already in. */ |
| if (!_TIFFCheckDirNumberAndOffset(tif, *nextdirnum, *nextdiroff)) |
| { |
| TIFFErrorExtR(tif, module, |
| "Starting directory %u at offset 0x%" PRIx64 " (%" PRIu64 |
| ") might cause an IFD loop", |
| *nextdirnum, *nextdiroff, *nextdiroff); |
| *nextdiroff = 0; |
| *nextdirnum = 0; |
| return (0); |
| } |
| |
| if (isMapped(tif)) |
| { |
| uint64_t poff = *nextdiroff; |
| if (!(tif->tif_flags & TIFF_BIGTIFF)) |
| { |
| tmsize_t poffa, poffb, poffc, poffd; |
| uint16_t dircount; |
| uint32_t nextdir32; |
| poffa = (tmsize_t)poff; |
| poffb = poffa + sizeof(uint16_t); |
| if (((uint64_t)poffa != poff) || (poffb < poffa) || |
| (poffb < (tmsize_t)sizeof(uint16_t)) || (poffb > tif->tif_size)) |
| { |
| TIFFErrorExtR(tif, module, |
| "%s:%d: %s: Error fetching directory count", |
| __FILE__, __LINE__, tif->tif_name); |
| *nextdiroff = 0; |
| return (0); |
| } |
| _TIFFmemcpy(&dircount, tif->tif_base + poffa, sizeof(uint16_t)); |
| if (tif->tif_flags & TIFF_SWAB) |
| TIFFSwabShort(&dircount); |
| poffc = poffb + dircount * 12; |
| poffd = poffc + sizeof(uint32_t); |
| if ((poffc < poffb) || (poffc < dircount * 12) || (poffd < poffc) || |
| (poffd < (tmsize_t)sizeof(uint32_t)) || (poffd > tif->tif_size)) |
| { |
| TIFFErrorExtR(tif, module, "Error fetching directory link"); |
| return (0); |
| } |
| if (off != NULL) |
| *off = (uint64_t)poffc; |
| _TIFFmemcpy(&nextdir32, tif->tif_base + poffc, sizeof(uint32_t)); |
| if (tif->tif_flags & TIFF_SWAB) |
| TIFFSwabLong(&nextdir32); |
| *nextdiroff = nextdir32; |
| } |
| else |
| { |
| tmsize_t poffa, poffb, poffc, poffd; |
| uint64_t dircount64; |
| uint16_t dircount16; |
| if (poff > (uint64_t)TIFF_TMSIZE_T_MAX - sizeof(uint64_t)) |
| { |
| TIFFErrorExtR(tif, module, |
| "%s:%d: %s: Error fetching directory count", |
| __FILE__, __LINE__, tif->tif_name); |
| return (0); |
| } |
| poffa = (tmsize_t)poff; |
| poffb = poffa + sizeof(uint64_t); |
| if (poffb > tif->tif_size) |
| { |
| TIFFErrorExtR(tif, module, |
| "%s:%d: %s: Error fetching directory count", |
| __FILE__, __LINE__, tif->tif_name); |
| return (0); |
| } |
| _TIFFmemcpy(&dircount64, tif->tif_base + poffa, sizeof(uint64_t)); |
| if (tif->tif_flags & TIFF_SWAB) |
| TIFFSwabLong8(&dircount64); |
| if (dircount64 > 0xFFFF) |
| { |
| TIFFErrorExtR(tif, module, |
| "Sanity check on directory count failed"); |
| return (0); |
| } |
| dircount16 = (uint16_t)dircount64; |
| if (poffb > TIFF_TMSIZE_T_MAX - (tmsize_t)(dircount16 * 20) - |
| (tmsize_t)sizeof(uint64_t)) |
| { |
| TIFFErrorExtR(tif, module, "Error fetching directory link"); |
| return (0); |
| } |
| poffc = poffb + dircount16 * 20; |
| poffd = poffc + sizeof(uint64_t); |
| if (poffd > tif->tif_size) |
| { |
| TIFFErrorExtR(tif, module, "Error fetching directory link"); |
| return (0); |
| } |
| if (off != NULL) |
| *off = (uint64_t)poffc; |
| _TIFFmemcpy(nextdiroff, tif->tif_base + poffc, sizeof(uint64_t)); |
| if (tif->tif_flags & TIFF_SWAB) |
| TIFFSwabLong8(nextdiroff); |
| } |
| } |
| else |
| { |
| if (!(tif->tif_flags & TIFF_BIGTIFF)) |
| { |
| uint16_t dircount; |
| uint32_t nextdir32; |
| if (!SeekOK(tif, *nextdiroff) || |
| !ReadOK(tif, &dircount, sizeof(uint16_t))) |
| { |
| TIFFErrorExtR(tif, module, |
| "%s:%d: %s: Error fetching directory count", |
| __FILE__, __LINE__, tif->tif_name); |
| return (0); |
| } |
| if (tif->tif_flags & TIFF_SWAB) |
| TIFFSwabShort(&dircount); |
| if (off != NULL) |
| *off = TIFFSeekFile(tif, dircount * 12, SEEK_CUR); |
| else |
| (void)TIFFSeekFile(tif, dircount * 12, SEEK_CUR); |
| if (!ReadOK(tif, &nextdir32, sizeof(uint32_t))) |
| { |
| TIFFErrorExtR(tif, module, "%s: Error fetching directory link", |
| tif->tif_name); |
| return (0); |
| } |
| if (tif->tif_flags & TIFF_SWAB) |
| TIFFSwabLong(&nextdir32); |
| *nextdiroff = nextdir32; |
| } |
| else |
| { |
| uint64_t dircount64; |
| uint16_t dircount16; |
| if (!SeekOK(tif, *nextdiroff) || |
| !ReadOK(tif, &dircount64, sizeof(uint64_t))) |
| { |
| TIFFErrorExtR(tif, module, |
| "%s:%d: %s: Error fetching directory count", |
| __FILE__, __LINE__, tif->tif_name); |
| return (0); |
| } |
| if (tif->tif_flags & TIFF_SWAB) |
| TIFFSwabLong8(&dircount64); |
| if (dircount64 > 0xFFFF) |
| { |
| TIFFErrorExtR(tif, module, |
| "%s:%d: %s: Error fetching directory count", |
| __FILE__, __LINE__, tif->tif_name); |
| return (0); |
| } |
| dircount16 = (uint16_t)dircount64; |
| if (off != NULL) |
| *off = TIFFSeekFile(tif, dircount16 * 20, SEEK_CUR); |
| else |
| (void)TIFFSeekFile(tif, dircount16 * 20, SEEK_CUR); |
| if (!ReadOK(tif, nextdiroff, sizeof(uint64_t))) |
| { |
| TIFFErrorExtR(tif, module, "%s: Error fetching directory link", |
| tif->tif_name); |
| return (0); |
| } |
| if (tif->tif_flags & TIFF_SWAB) |
| TIFFSwabLong8(nextdiroff); |
| } |
| } |
| if (*nextdiroff != 0) |
| { |
| (*nextdirnum)++; |
| /* Check next directory for IFD looping and if so, set it as last |
| * directory. */ |
| if (!_TIFFCheckDirNumberAndOffset(tif, *nextdirnum, *nextdiroff)) |
| { |
| TIFFWarningExtR( |
| tif, module, |
| "the next directory %u at offset 0x%" PRIx64 " (%" PRIu64 |
| ") might be an IFD loop. Treating directory %d as " |
| "last directory", |
| *nextdirnum, *nextdiroff, *nextdiroff, (int)(*nextdirnum) - 1); |
| *nextdiroff = 0; |
| (*nextdirnum)--; |
| } |
| } |
| return (1); |
| } |
| |
| /* |
| * Count the number of directories in a file. |
| */ |
| tdir_t TIFFNumberOfDirectories(TIFF *tif) |
| { |
| uint64_t nextdiroff; |
| tdir_t nextdirnum; |
| tdir_t n; |
| if (!(tif->tif_flags & TIFF_BIGTIFF)) |
| nextdiroff = tif->tif_header.classic.tiff_diroff; |
| else |
| nextdiroff = tif->tif_header.big.tiff_diroff; |
| nextdirnum = 0; |
| n = 0; |
| while (nextdiroff != 0 && |
| TIFFAdvanceDirectory(tif, &nextdiroff, NULL, &nextdirnum)) |
| { |
| ++n; |
| } |
| /* Update number of main-IFDs in file. */ |
| tif->tif_curdircount = n; |
| return (n); |
| } |
| |
| /* |
| * Set the n-th directory as the current directory. |
| * NB: Directories are numbered starting at 0. |
| */ |
| int TIFFSetDirectory(TIFF *tif, tdir_t dirn) |
| { |
| uint64_t nextdiroff; |
| tdir_t nextdirnum = 0; |
| tdir_t n; |
| |
| if (tif->tif_setdirectory_force_absolute) |
| { |
| /* tif_setdirectory_force_absolute=1 will force parsing the main IFD |
| * chain from the beginning, thus IFD directory list needs to be cleared |
| * from possible SubIFD offsets. |
| */ |
| _TIFFCleanupIFDOffsetAndNumberMaps(tif); /* invalidate IFD loop lists */ |
| } |
| |
| /* Even faster path, if offset is available within IFD loop hash list. */ |
| if (!tif->tif_setdirectory_force_absolute && |
| _TIFFGetOffsetFromDirNumber(tif, dirn, &nextdiroff)) |
| { |
| /* Set parameters for following TIFFReadDirectory() below. */ |
| tif->tif_nextdiroff = nextdiroff; |
| tif->tif_curdir = dirn; |
| /* Reset to relative stepping */ |
| tif->tif_setdirectory_force_absolute = FALSE; |
| } |
| else |
| { |
| |
| /* Fast path when we just advance relative to the current directory: |
| * start at the current dir offset and continue to seek from there. |
| * Check special cases when relative is not allowed: |
| * - jump back from SubIFD or custom directory |
| * - right after TIFFWriteDirectory() jump back to that directory |
| * using TIFFSetDirectory() */ |
| const int relative = (dirn >= tif->tif_curdir) && |
| (tif->tif_diroff != 0) && |
| !tif->tif_setdirectory_force_absolute; |
| |
| if (relative) |
| { |
| nextdiroff = tif->tif_diroff; |
| dirn -= tif->tif_curdir; |
| nextdirnum = tif->tif_curdir; |
| } |
| else if (!(tif->tif_flags & TIFF_BIGTIFF)) |
| nextdiroff = tif->tif_header.classic.tiff_diroff; |
| else |
| nextdiroff = tif->tif_header.big.tiff_diroff; |
| |
| /* Reset to relative stepping */ |
| tif->tif_setdirectory_force_absolute = FALSE; |
| |
| for (n = dirn; n > 0 && nextdiroff != 0; n--) |
| if (!TIFFAdvanceDirectory(tif, &nextdiroff, NULL, &nextdirnum)) |
| return (0); |
| /* If the n-th directory could not be reached (does not exist), |
| * return here without touching anything further. */ |
| if (nextdiroff == 0 || n > 0) |
| return (0); |
| |
| tif->tif_nextdiroff = nextdiroff; |
| |
| /* Set curdir to the actual directory index. */ |
| if (relative) |
| tif->tif_curdir += dirn - n; |
| else |
| tif->tif_curdir = dirn - n; |
| } |
| |
| /* The -1 decrement is because TIFFReadDirectory will increment |
| * tif_curdir after successfully reading the directory. */ |
| if (tif->tif_curdir == 0) |
| tif->tif_curdir = TIFF_NON_EXISTENT_DIR_NUMBER; |
| else |
| tif->tif_curdir--; |
| |
| tdir_t curdir = tif->tif_curdir; |
| |
| int retval = TIFFReadDirectory(tif); |
| |
| if (!retval && tif->tif_curdir == curdir) |
| { |
| /* If tif_curdir has not be incremented, TIFFFetchDirectory() in |
| * TIFFReadDirectory() has failed and tif_curdir shall be set |
| * specifically. */ |
| tif->tif_curdir = TIFF_NON_EXISTENT_DIR_NUMBER; |
| } |
| return (retval); |
| } |
| |
| /* |
| * Set the current directory to be the directory |
| * located at the specified file offset. This interface |
| * is used mainly to access directories linked with |
| * the SubIFD tag (e.g. thumbnail images). |
| */ |
| int TIFFSetSubDirectory(TIFF *tif, uint64_t diroff) |
| { |
| /* Match nextdiroff and curdir for consistent IFD-loop checking. |
| * Only with TIFFSetSubDirectory() the IFD list can be corrupted with |
| * invalid offsets within the main IFD tree. In the case of several subIFDs |
| * of a main image, there are two possibilities that are not even mutually |
| * exclusive. a.) The subIFD tag contains an array with all offsets of the |
| * subIFDs. b.) The SubIFDs are concatenated with their NextIFD parameters. |
| * (refer to |
| * https://www.awaresystems.be/imaging/tiff/specification/TIFFPM6.pdf.) |
| */ |
| int retval; |
| uint32_t curdir = 0; |
| int8_t probablySubIFD = 0; |
| if (diroff == 0) |
| { |
| /* Special case to set tif_diroff=0, which is done in |
| * TIFFReadDirectory() below to indicate that the currently read IFD is |
| * treated as a new, fresh IFD. */ |
| tif->tif_curdir = TIFF_NON_EXISTENT_DIR_NUMBER; |
| tif->tif_dir.td_iswrittentofile = FALSE; |
| } |
| else |
| { |
| if (!_TIFFGetDirNumberFromOffset(tif, diroff, &curdir)) |
| { |
| /* Non-existing offsets might point to a SubIFD or invalid IFD.*/ |
| probablySubIFD = 1; |
| } |
| /* -1 because TIFFReadDirectory() will increment tif_curdir. */ |
| if (curdir >= 1) |
| tif->tif_curdir = curdir - 1; |
| else |
| tif->tif_curdir = TIFF_NON_EXISTENT_DIR_NUMBER; |
| } |
| curdir = tif->tif_curdir; |
| |
| tif->tif_nextdiroff = diroff; |
| retval = TIFFReadDirectory(tif); |
| |
| /* tif_curdir is incremented in TIFFReadDirectory(), but if it has not been |
| * incremented, TIFFFetchDirectory() has failed there and tif_curdir shall |
| * be set specifically. */ |
| if (!retval && diroff != 0 && tif->tif_curdir == curdir) |
| { |
| tif->tif_curdir = TIFF_NON_EXISTENT_DIR_NUMBER; |
| } |
| |
| if (probablySubIFD) |
| { |
| if (retval) |
| { |
| /* Reset IFD list to start new one for SubIFD chain and also start |
| * SubIFD chain with tif_curdir=0 for IFD loop checking. */ |
| /* invalidate IFD loop lists */ |
| _TIFFCleanupIFDOffsetAndNumberMaps(tif); |
| tif->tif_curdir = 0; /* first directory of new chain */ |
| /* add this offset to new IFD list */ |
| _TIFFCheckDirNumberAndOffset(tif, tif->tif_curdir, diroff); |
| } |
| /* To be able to return from SubIFD or custom-IFD to main-IFD */ |
| tif->tif_setdirectory_force_absolute = TRUE; |
| } |
| |
| return (retval); |
| } |
| |
| /* |
| * Return file offset of the current directory. |
| */ |
| uint64_t TIFFCurrentDirOffset(TIFF *tif) { return (tif->tif_diroff); } |
| |
| /* |
| * Return an indication of whether or not we are |
| * at the last directory in the file. |
| */ |
| int TIFFLastDirectory(TIFF *tif) { return (tif->tif_nextdiroff == 0); } |
| |
| /* |
| * Unlink the specified directory from the directory chain. |
| * Note: First directory starts with number dirn=1. |
| * This is different to TIFFSetDirectory() where the first directory starts with |
| * zero. |
| */ |
| int TIFFUnlinkDirectory(TIFF *tif, tdir_t dirn) |
| { |
| static const char module[] = "TIFFUnlinkDirectory"; |
| uint64_t nextdir; |
| tdir_t nextdirnum; |
| uint64_t off; |
| tdir_t n; |
| |
| if (tif->tif_mode == O_RDONLY) |
| { |
| TIFFErrorExtR(tif, module, |
| "Can not unlink directory in read-only file"); |
| return (0); |
| } |
| if (dirn == 0) |
| { |
| TIFFErrorExtR(tif, module, |
| "For TIFFUnlinkDirectory() first directory starts with " |
| "number 1 and not 0"); |
| return (0); |
| } |
| /* |
| * Go to the directory before the one we want |
| * to unlink and nab the offset of the link |
| * field we'll need to patch. |
| */ |
| if (!(tif->tif_flags & TIFF_BIGTIFF)) |
| { |
| nextdir = tif->tif_header.classic.tiff_diroff; |
| off = 4; |
| } |
| else |
| { |
| nextdir = tif->tif_header.big.tiff_diroff; |
| off = 8; |
| } |
| nextdirnum = 0; /* First directory is dirn=0 */ |
| |
| for (n = dirn - 1; n > 0; n--) |
| { |
| if (nextdir == 0) |
| { |
| TIFFErrorExtR(tif, module, "Directory %u does not exist", dirn); |
| return (0); |
| } |
| if (!TIFFAdvanceDirectory(tif, &nextdir, &off, &nextdirnum)) |
| return (0); |
| } |
| /* |
| * Advance to the directory to be unlinked and fetch |
| * the offset of the directory that follows. |
| */ |
| if (!TIFFAdvanceDirectory(tif, &nextdir, NULL, &nextdirnum)) |
| return (0); |
| /* |
| * Go back and patch the link field of the preceding |
| * directory to point to the offset of the directory |
| * that follows. |
| */ |
| (void)TIFFSeekFile(tif, off, SEEK_SET); |
| if (!(tif->tif_flags & TIFF_BIGTIFF)) |
| { |
| uint32_t nextdir32; |
| nextdir32 = (uint32_t)nextdir; |
| assert((uint64_t)nextdir32 == nextdir); |
| if (tif->tif_flags & TIFF_SWAB) |
| TIFFSwabLong(&nextdir32); |
| if (!WriteOK(tif, &nextdir32, sizeof(uint32_t))) |
| { |
| TIFFErrorExtR(tif, module, "Error writing directory link"); |
| return (0); |
| } |
| } |
| else |
| { |
| /* Need local swap because nextdir has to be used unswapped below. */ |
| uint64_t nextdir64 = nextdir; |
| if (tif->tif_flags & TIFF_SWAB) |
| TIFFSwabLong8(&nextdir64); |
| if (!WriteOK(tif, &nextdir64, sizeof(uint64_t))) |
| { |
| TIFFErrorExtR(tif, module, "Error writing directory link"); |
| return (0); |
| } |
| } |
| |
| /* For dirn=1 (first directory) also update the libtiff internal |
| * base offset variables. */ |
| if (dirn == 1) |
| { |
| if (!(tif->tif_flags & TIFF_BIGTIFF)) |
| tif->tif_header.classic.tiff_diroff = (uint32_t)nextdir; |
| else |
| tif->tif_header.big.tiff_diroff = nextdir; |
| } |
| |
| /* |
| * Leave directory state setup safely. We don't have |
| * facilities for doing inserting and removing directories, |
| * so it's safest to just invalidate everything. This |
| * means that the caller can only append to the directory |
| * chain. |
| */ |
| (*tif->tif_cleanup)(tif); |
| if ((tif->tif_flags & TIFF_MYBUFFER) && tif->tif_rawdata) |
| { |
| _TIFFfreeExt(tif, tif->tif_rawdata); |
| tif->tif_rawdata = NULL; |
| tif->tif_rawcc = 0; |
| tif->tif_rawdataoff = 0; |
| tif->tif_rawdataloaded = 0; |
| } |
| tif->tif_flags &= ~(TIFF_BEENWRITING | TIFF_BUFFERSETUP | TIFF_POSTENCODE | |
| TIFF_BUF4WRITE); |
| TIFFFreeDirectory(tif); |
| TIFFDefaultDirectory(tif); |
| tif->tif_diroff = 0; /* force link on next write */ |
| tif->tif_nextdiroff = 0; /* next write must be at end */ |
| tif->tif_lastdiroff = 0; /* will be updated on next link */ |
| tif->tif_curoff = 0; |
| tif->tif_row = (uint32_t)-1; |
| tif->tif_curstrip = (uint32_t)-1; |
| tif->tif_curdir = TIFF_NON_EXISTENT_DIR_NUMBER; |
| if (tif->tif_curdircount > 0) |
| tif->tif_curdircount--; |
| else |
| tif->tif_curdircount = TIFF_NON_EXISTENT_DIR_NUMBER; |
| _TIFFCleanupIFDOffsetAndNumberMaps(tif); /* invalidate IFD loop lists */ |
| return (1); |
| } |
