/src/gdal/frmts/gtiff/libtiff/tif_dirwrite.c
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1 | | /* |
2 | | * Copyright (c) 1988-1997 Sam Leffler |
3 | | * Copyright (c) 1991-1997 Silicon Graphics, Inc. |
4 | | * |
5 | | * Permission to use, copy, modify, distribute, and sell this software and |
6 | | * its documentation for any purpose is hereby granted without fee, provided |
7 | | * that (i) the above copyright notices and this permission notice appear in |
8 | | * all copies of the software and related documentation, and (ii) the names of |
9 | | * Sam Leffler and Silicon Graphics may not be used in any advertising or |
10 | | * publicity relating to the software without the specific, prior written |
11 | | * permission of Sam Leffler and Silicon Graphics. |
12 | | * |
13 | | * THE SOFTWARE IS PROVIDED "AS-IS" AND WITHOUT WARRANTY OF ANY KIND, |
14 | | * EXPRESS, IMPLIED OR OTHERWISE, INCLUDING WITHOUT LIMITATION, ANY |
15 | | * WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. |
16 | | * |
17 | | * IN NO EVENT SHALL SAM LEFFLER OR SILICON GRAPHICS BE LIABLE FOR |
18 | | * ANY SPECIAL, INCIDENTAL, INDIRECT OR CONSEQUENTIAL DAMAGES OF ANY KIND, |
19 | | * OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, |
20 | | * WHETHER OR NOT ADVISED OF THE POSSIBILITY OF DAMAGE, AND ON ANY THEORY OF |
21 | | * LIABILITY, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE |
22 | | * OF THIS SOFTWARE. |
23 | | */ |
24 | | |
25 | | /* |
26 | | * TIFF Library. |
27 | | * |
28 | | * Directory Write Support Routines. |
29 | | */ |
30 | | #include "tiffiop.h" |
31 | | #include <float.h> /*--: for Rational2Double */ |
32 | | #include <math.h> /*--: for Rational2Double */ |
33 | | |
34 | | #ifdef HAVE_IEEEFP |
35 | | #define TIFFCvtNativeToIEEEFloat(tif, n, fp) |
36 | | #define TIFFCvtNativeToIEEEDouble(tif, n, dp) |
37 | | #else |
38 | | /* If your machine does not support IEEE floating point then you will need to |
39 | | * add support to tif_machdep.c to convert between the native format and |
40 | | * IEEE format. */ |
41 | | extern void TIFFCvtNativeToIEEEFloat(TIFF *tif, uint32_t n, float *fp); |
42 | | extern void TIFFCvtNativeToIEEEDouble(TIFF *tif, uint32_t n, double *dp); |
43 | | #endif |
44 | | |
45 | | static int TIFFWriteDirectorySec(TIFF *tif, int isimage, int imagedone, |
46 | | uint64_t *pdiroff); |
47 | | |
48 | | static int TIFFWriteDirectoryTagSampleformatArray(TIFF *tif, uint32_t *ndir, |
49 | | TIFFDirEntry *dir, |
50 | | uint16_t tag, uint32_t count, |
51 | | double *value); |
52 | | |
53 | | static int TIFFWriteDirectoryTagAscii(TIFF *tif, uint32_t *ndir, |
54 | | TIFFDirEntry *dir, uint16_t tag, |
55 | | uint32_t count, char *value); |
56 | | static int TIFFWriteDirectoryTagUndefinedArray(TIFF *tif, uint32_t *ndir, |
57 | | TIFFDirEntry *dir, uint16_t tag, |
58 | | uint32_t count, uint8_t *value); |
59 | | static int TIFFWriteDirectoryTagByteArray(TIFF *tif, uint32_t *ndir, |
60 | | TIFFDirEntry *dir, uint16_t tag, |
61 | | uint32_t count, uint8_t *value); |
62 | | static int TIFFWriteDirectoryTagSbyteArray(TIFF *tif, uint32_t *ndir, |
63 | | TIFFDirEntry *dir, uint16_t tag, |
64 | | uint32_t count, int8_t *value); |
65 | | static int TIFFWriteDirectoryTagShort(TIFF *tif, uint32_t *ndir, |
66 | | TIFFDirEntry *dir, uint16_t tag, |
67 | | uint16_t value); |
68 | | static int TIFFWriteDirectoryTagShortArray(TIFF *tif, uint32_t *ndir, |
69 | | TIFFDirEntry *dir, uint16_t tag, |
70 | | uint32_t count, uint16_t *value); |
71 | | static int TIFFWriteDirectoryTagShortPerSample(TIFF *tif, uint32_t *ndir, |
72 | | TIFFDirEntry *dir, uint16_t tag, |
73 | | uint16_t value); |
74 | | static int TIFFWriteDirectoryTagSshortArray(TIFF *tif, uint32_t *ndir, |
75 | | TIFFDirEntry *dir, uint16_t tag, |
76 | | uint32_t count, int16_t *value); |
77 | | static int TIFFWriteDirectoryTagLong(TIFF *tif, uint32_t *ndir, |
78 | | TIFFDirEntry *dir, uint16_t tag, |
79 | | uint32_t value); |
80 | | static int TIFFWriteDirectoryTagLongArray(TIFF *tif, uint32_t *ndir, |
81 | | TIFFDirEntry *dir, uint16_t tag, |
82 | | uint32_t count, uint32_t *value); |
83 | | static int TIFFWriteDirectoryTagSlongArray(TIFF *tif, uint32_t *ndir, |
84 | | TIFFDirEntry *dir, uint16_t tag, |
85 | | uint32_t count, int32_t *value); |
86 | | static int TIFFWriteDirectoryTagLong8Array(TIFF *tif, uint32_t *ndir, |
87 | | TIFFDirEntry *dir, uint16_t tag, |
88 | | uint32_t count, uint64_t *value); |
89 | | static int TIFFWriteDirectoryTagSlong8Array(TIFF *tif, uint32_t *ndir, |
90 | | TIFFDirEntry *dir, uint16_t tag, |
91 | | uint32_t count, int64_t *value); |
92 | | static int TIFFWriteDirectoryTagRational(TIFF *tif, uint32_t *ndir, |
93 | | TIFFDirEntry *dir, uint16_t tag, |
94 | | double value); |
95 | | static int TIFFWriteDirectoryTagRationalArray(TIFF *tif, uint32_t *ndir, |
96 | | TIFFDirEntry *dir, uint16_t tag, |
97 | | uint32_t count, float *value); |
98 | | static int TIFFWriteDirectoryTagSrationalArray(TIFF *tif, uint32_t *ndir, |
99 | | TIFFDirEntry *dir, uint16_t tag, |
100 | | uint32_t count, float *value); |
101 | | static int TIFFWriteDirectoryTagFloatArray(TIFF *tif, uint32_t *ndir, |
102 | | TIFFDirEntry *dir, uint16_t tag, |
103 | | uint32_t count, float *value); |
104 | | static int TIFFWriteDirectoryTagDoubleArray(TIFF *tif, uint32_t *ndir, |
105 | | TIFFDirEntry *dir, uint16_t tag, |
106 | | uint32_t count, double *value); |
107 | | static int TIFFWriteDirectoryTagIfdArray(TIFF *tif, uint32_t *ndir, |
108 | | TIFFDirEntry *dir, uint16_t tag, |
109 | | uint32_t count, uint32_t *value); |
110 | | static int TIFFWriteDirectoryTagShortLong(TIFF *tif, uint32_t *ndir, |
111 | | TIFFDirEntry *dir, uint16_t tag, |
112 | | uint32_t value); |
113 | | static int TIFFWriteDirectoryTagLongLong8Array(TIFF *tif, uint32_t *ndir, |
114 | | TIFFDirEntry *dir, uint16_t tag, |
115 | | uint32_t count, uint64_t *value); |
116 | | static int TIFFWriteDirectoryTagIfdIfd8Array(TIFF *tif, uint32_t *ndir, |
117 | | TIFFDirEntry *dir, uint16_t tag, |
118 | | uint32_t count, uint64_t *value); |
119 | | static int TIFFWriteDirectoryTagColormap(TIFF *tif, uint32_t *ndir, |
120 | | TIFFDirEntry *dir); |
121 | | static int TIFFWriteDirectoryTagTransferfunction(TIFF *tif, uint32_t *ndir, |
122 | | TIFFDirEntry *dir); |
123 | | static int TIFFWriteDirectoryTagSubifd(TIFF *tif, uint32_t *ndir, |
124 | | TIFFDirEntry *dir); |
125 | | |
126 | | static int TIFFWriteDirectoryTagCheckedAscii(TIFF *tif, uint32_t *ndir, |
127 | | TIFFDirEntry *dir, uint16_t tag, |
128 | | uint32_t count, char *value); |
129 | | static int TIFFWriteDirectoryTagCheckedUndefinedArray(TIFF *tif, uint32_t *ndir, |
130 | | TIFFDirEntry *dir, |
131 | | uint16_t tag, |
132 | | uint32_t count, |
133 | | uint8_t *value); |
134 | | static int TIFFWriteDirectoryTagCheckedByteArray(TIFF *tif, uint32_t *ndir, |
135 | | TIFFDirEntry *dir, |
136 | | uint16_t tag, uint32_t count, |
137 | | uint8_t *value); |
138 | | static int TIFFWriteDirectoryTagCheckedSbyteArray(TIFF *tif, uint32_t *ndir, |
139 | | TIFFDirEntry *dir, |
140 | | uint16_t tag, uint32_t count, |
141 | | int8_t *value); |
142 | | static int TIFFWriteDirectoryTagCheckedShort(TIFF *tif, uint32_t *ndir, |
143 | | TIFFDirEntry *dir, uint16_t tag, |
144 | | uint16_t value); |
145 | | static int TIFFWriteDirectoryTagCheckedShortArray(TIFF *tif, uint32_t *ndir, |
146 | | TIFFDirEntry *dir, |
147 | | uint16_t tag, uint32_t count, |
148 | | uint16_t *value); |
149 | | static int TIFFWriteDirectoryTagCheckedSshortArray(TIFF *tif, uint32_t *ndir, |
150 | | TIFFDirEntry *dir, |
151 | | uint16_t tag, uint32_t count, |
152 | | int16_t *value); |
153 | | static int TIFFWriteDirectoryTagCheckedLong(TIFF *tif, uint32_t *ndir, |
154 | | TIFFDirEntry *dir, uint16_t tag, |
155 | | uint32_t value); |
156 | | static int TIFFWriteDirectoryTagCheckedLongArray(TIFF *tif, uint32_t *ndir, |
157 | | TIFFDirEntry *dir, |
158 | | uint16_t tag, uint32_t count, |
159 | | uint32_t *value); |
160 | | static int TIFFWriteDirectoryTagCheckedSlongArray(TIFF *tif, uint32_t *ndir, |
161 | | TIFFDirEntry *dir, |
162 | | uint16_t tag, uint32_t count, |
163 | | int32_t *value); |
164 | | static int TIFFWriteDirectoryTagCheckedLong8Array(TIFF *tif, uint32_t *ndir, |
165 | | TIFFDirEntry *dir, |
166 | | uint16_t tag, uint32_t count, |
167 | | uint64_t *value); |
168 | | static int TIFFWriteDirectoryTagCheckedSlong8Array(TIFF *tif, uint32_t *ndir, |
169 | | TIFFDirEntry *dir, |
170 | | uint16_t tag, uint32_t count, |
171 | | int64_t *value); |
172 | | static int TIFFWriteDirectoryTagCheckedRational(TIFF *tif, uint32_t *ndir, |
173 | | TIFFDirEntry *dir, uint16_t tag, |
174 | | double value); |
175 | | static int TIFFWriteDirectoryTagCheckedRationalArray(TIFF *tif, uint32_t *ndir, |
176 | | TIFFDirEntry *dir, |
177 | | uint16_t tag, |
178 | | uint32_t count, |
179 | | float *value); |
180 | | static int TIFFWriteDirectoryTagCheckedSrationalArray(TIFF *tif, uint32_t *ndir, |
181 | | TIFFDirEntry *dir, |
182 | | uint16_t tag, |
183 | | uint32_t count, |
184 | | float *value); |
185 | | |
186 | | /*--: Rational2Double: New functions to support true double-precision for custom |
187 | | * rational tag types. */ |
188 | | static int TIFFWriteDirectoryTagRationalDoubleArray(TIFF *tif, uint32_t *ndir, |
189 | | TIFFDirEntry *dir, |
190 | | uint16_t tag, |
191 | | uint32_t count, |
192 | | double *value); |
193 | | static int TIFFWriteDirectoryTagSrationalDoubleArray(TIFF *tif, uint32_t *ndir, |
194 | | TIFFDirEntry *dir, |
195 | | uint16_t tag, |
196 | | uint32_t count, |
197 | | double *value); |
198 | | static int |
199 | | TIFFWriteDirectoryTagCheckedRationalDoubleArray(TIFF *tif, uint32_t *ndir, |
200 | | TIFFDirEntry *dir, uint16_t tag, |
201 | | uint32_t count, double *value); |
202 | | static int TIFFWriteDirectoryTagCheckedSrationalDoubleArray( |
203 | | TIFF *tif, uint32_t *ndir, TIFFDirEntry *dir, uint16_t tag, uint32_t count, |
204 | | double *value); |
205 | | static void DoubleToRational(double value, uint32_t *num, uint32_t *denom); |
206 | | static void DoubleToSrational(double value, int32_t *num, int32_t *denom); |
207 | | |
208 | | static int TIFFWriteDirectoryTagCheckedFloatArray(TIFF *tif, uint32_t *ndir, |
209 | | TIFFDirEntry *dir, |
210 | | uint16_t tag, uint32_t count, |
211 | | float *value); |
212 | | static int TIFFWriteDirectoryTagCheckedDoubleArray(TIFF *tif, uint32_t *ndir, |
213 | | TIFFDirEntry *dir, |
214 | | uint16_t tag, uint32_t count, |
215 | | double *value); |
216 | | static int TIFFWriteDirectoryTagCheckedIfdArray(TIFF *tif, uint32_t *ndir, |
217 | | TIFFDirEntry *dir, uint16_t tag, |
218 | | uint32_t count, |
219 | | uint32_t *value); |
220 | | static int TIFFWriteDirectoryTagCheckedIfd8Array(TIFF *tif, uint32_t *ndir, |
221 | | TIFFDirEntry *dir, |
222 | | uint16_t tag, uint32_t count, |
223 | | uint64_t *value); |
224 | | |
225 | | static int TIFFWriteDirectoryTagData(TIFF *tif, uint32_t *ndir, |
226 | | TIFFDirEntry *dir, uint16_t tag, |
227 | | uint16_t datatype, uint32_t count, |
228 | | uint32_t datalength, void *data); |
229 | | |
230 | | static int TIFFLinkDirectory(TIFF *); |
231 | | |
232 | | /* |
233 | | * Write the contents of the current directory |
234 | | * to the specified file. This routine doesn't |
235 | | * handle overwriting a directory with auxiliary |
236 | | * storage that's been changed. |
237 | | */ |
238 | | int TIFFWriteDirectory(TIFF *tif) |
239 | 0 | { |
240 | 0 | return TIFFWriteDirectorySec(tif, TRUE, TRUE, NULL); |
241 | 0 | } |
242 | | |
243 | | /* |
244 | | * This is an advanced writing function that must be used in a particular |
245 | | * sequence, and generally together with TIFFForceStrileArrayWriting(), |
246 | | * to make its intended effect. Its aim is to modify the location |
247 | | * where the [Strip/Tile][Offsets/ByteCounts] arrays are located in the file. |
248 | | * More precisely, when TIFFWriteCheck() will be called, the tag entries for |
249 | | * those arrays will be written with type = count = offset = 0 as a temporary |
250 | | * value. |
251 | | * |
252 | | * Its effect is only valid for the current directory, and before |
253 | | * TIFFWriteDirectory() is first called, and will be reset when |
254 | | * changing directory. |
255 | | * |
256 | | * The typical sequence of calls is: |
257 | | * TIFFOpen() |
258 | | * [ TIFFCreateDirectory(tif) ] |
259 | | * Set fields with calls to TIFFSetField(tif, ...) |
260 | | * TIFFDeferStrileArrayWriting(tif) |
261 | | * TIFFWriteCheck(tif, ...) |
262 | | * TIFFWriteDirectory(tif) |
263 | | * ... potentially create other directories and come back to the above directory |
264 | | * TIFFForceStrileArrayWriting(tif): emit the arrays at the end of file |
265 | | * |
266 | | * Returns 1 in case of success, 0 otherwise. |
267 | | */ |
268 | | int TIFFDeferStrileArrayWriting(TIFF *tif) |
269 | 0 | { |
270 | 0 | static const char module[] = "TIFFDeferStrileArrayWriting"; |
271 | 0 | if (tif->tif_mode == O_RDONLY) |
272 | 0 | { |
273 | 0 | TIFFErrorExtR(tif, tif->tif_name, "File opened in read-only mode"); |
274 | 0 | return 0; |
275 | 0 | } |
276 | 0 | if (tif->tif_diroff != 0) |
277 | 0 | { |
278 | 0 | TIFFErrorExtR(tif, module, "Directory has already been written"); |
279 | 0 | return 0; |
280 | 0 | } |
281 | | |
282 | 0 | tif->tif_dir.td_deferstrilearraywriting = TRUE; |
283 | 0 | return 1; |
284 | 0 | } |
285 | | |
286 | | /* |
287 | | * Similar to TIFFWriteDirectory(), writes the directory out |
288 | | * but leaves all data structures in memory so that it can be |
289 | | * written again. This will make a partially written TIFF file |
290 | | * readable before it is successfully completed/closed. |
291 | | */ |
292 | | int TIFFCheckpointDirectory(TIFF *tif) |
293 | 0 | { |
294 | 0 | int rc; |
295 | | /* Setup the strips arrays, if they haven't already been. */ |
296 | 0 | if (tif->tif_dir.td_stripoffset_p == NULL) |
297 | 0 | (void)TIFFSetupStrips(tif); |
298 | 0 | rc = TIFFWriteDirectorySec(tif, TRUE, FALSE, NULL); |
299 | 0 | (void)TIFFSetWriteOffset(tif, TIFFSeekFile(tif, 0, SEEK_END)); |
300 | 0 | return rc; |
301 | 0 | } |
302 | | |
303 | | int TIFFWriteCustomDirectory(TIFF *tif, uint64_t *pdiroff) |
304 | 0 | { |
305 | 0 | return TIFFWriteDirectorySec(tif, FALSE, FALSE, pdiroff); |
306 | 0 | } |
307 | | |
308 | | /* |
309 | | * Similar to TIFFWriteDirectorySec(), but if the directory has already |
310 | | * been written once, it is relocated to the end of the file, in case it |
311 | | * has changed in size. Note that this will result in the loss of the |
312 | | * previously used directory space. |
313 | | */ |
314 | | |
315 | | static int TIFFRewriteDirectorySec(TIFF *tif, int isimage, int imagedone, |
316 | | uint64_t *pdiroff) |
317 | 0 | { |
318 | 0 | static const char module[] = "TIFFRewriteDirectory"; |
319 | | |
320 | | /* We don't need to do anything special if it hasn't been written. */ |
321 | 0 | if (tif->tif_diroff == 0) |
322 | 0 | return TIFFWriteDirectory(tif); |
323 | | |
324 | | /* |
325 | | * Find and zero the pointer to this directory, so that TIFFLinkDirectory |
326 | | * will cause it to be added after this directories current pre-link. |
327 | | */ |
328 | 0 | uint64_t torewritediroff = tif->tif_diroff; |
329 | |
|
330 | 0 | if (!(tif->tif_flags & TIFF_BIGTIFF)) |
331 | 0 | { |
332 | 0 | if (tif->tif_header.classic.tiff_diroff == tif->tif_diroff) |
333 | 0 | { |
334 | 0 | tif->tif_header.classic.tiff_diroff = 0; |
335 | 0 | tif->tif_diroff = 0; |
336 | |
|
337 | 0 | TIFFSeekFile(tif, 4, SEEK_SET); |
338 | 0 | if (!WriteOK(tif, &(tif->tif_header.classic.tiff_diroff), 4)) |
339 | 0 | { |
340 | 0 | TIFFErrorExtR(tif, tif->tif_name, "Error updating TIFF header"); |
341 | 0 | return (0); |
342 | 0 | } |
343 | 0 | } |
344 | 0 | else if (tif->tif_diroff > 0xFFFFFFFFU) |
345 | 0 | { |
346 | 0 | TIFFErrorExtR(tif, module, |
347 | 0 | "tif->tif_diroff exceeds 32 bit range allowed for " |
348 | 0 | "Classic TIFF"); |
349 | 0 | return (0); |
350 | 0 | } |
351 | 0 | else |
352 | 0 | { |
353 | 0 | uint32_t nextdir; |
354 | 0 | nextdir = tif->tif_header.classic.tiff_diroff; |
355 | 0 | while (1) |
356 | 0 | { |
357 | 0 | uint16_t dircount; |
358 | 0 | uint32_t nextnextdir; |
359 | |
|
360 | 0 | if (!SeekOK(tif, nextdir) || !ReadOK(tif, &dircount, 2)) |
361 | 0 | { |
362 | 0 | TIFFErrorExtR(tif, module, |
363 | 0 | "Error fetching directory count"); |
364 | 0 | return (0); |
365 | 0 | } |
366 | 0 | if (tif->tif_flags & TIFF_SWAB) |
367 | 0 | TIFFSwabShort(&dircount); |
368 | 0 | (void)TIFFSeekFile(tif, nextdir + 2 + dircount * 12, SEEK_SET); |
369 | 0 | if (!ReadOK(tif, &nextnextdir, 4)) |
370 | 0 | { |
371 | 0 | TIFFErrorExtR(tif, module, "Error fetching directory link"); |
372 | 0 | return (0); |
373 | 0 | } |
374 | 0 | if (tif->tif_flags & TIFF_SWAB) |
375 | 0 | TIFFSwabLong(&nextnextdir); |
376 | 0 | if (nextnextdir == tif->tif_diroff) |
377 | 0 | { |
378 | 0 | uint32_t m; |
379 | 0 | m = 0; |
380 | 0 | (void)TIFFSeekFile(tif, nextdir + 2 + dircount * 12, |
381 | 0 | SEEK_SET); |
382 | 0 | if (!WriteOK(tif, &m, 4)) |
383 | 0 | { |
384 | 0 | TIFFErrorExtR(tif, module, |
385 | 0 | "Error writing directory link"); |
386 | 0 | return (0); |
387 | 0 | } |
388 | 0 | tif->tif_diroff = 0; |
389 | | /* Force a full-traversal to reach the zeroed pointer */ |
390 | 0 | tif->tif_lastdiroff = 0; |
391 | 0 | break; |
392 | 0 | } |
393 | 0 | nextdir = nextnextdir; |
394 | 0 | } |
395 | 0 | } |
396 | | /* Remove skipped offset from IFD loop directory list. */ |
397 | 0 | _TIFFRemoveEntryFromDirectoryListByOffset(tif, torewritediroff); |
398 | 0 | } |
399 | 0 | else |
400 | 0 | { |
401 | 0 | if (tif->tif_header.big.tiff_diroff == tif->tif_diroff) |
402 | 0 | { |
403 | 0 | tif->tif_header.big.tiff_diroff = 0; |
404 | 0 | tif->tif_diroff = 0; |
405 | |
|
406 | 0 | TIFFSeekFile(tif, 8, SEEK_SET); |
407 | 0 | if (!WriteOK(tif, &(tif->tif_header.big.tiff_diroff), 8)) |
408 | 0 | { |
409 | 0 | TIFFErrorExtR(tif, tif->tif_name, "Error updating TIFF header"); |
410 | 0 | return (0); |
411 | 0 | } |
412 | 0 | } |
413 | 0 | else |
414 | 0 | { |
415 | 0 | uint64_t nextdir; |
416 | 0 | nextdir = tif->tif_header.big.tiff_diroff; |
417 | 0 | while (1) |
418 | 0 | { |
419 | 0 | uint64_t dircount64; |
420 | 0 | uint16_t dircount; |
421 | 0 | uint64_t nextnextdir; |
422 | |
|
423 | 0 | if (!SeekOK(tif, nextdir) || !ReadOK(tif, &dircount64, 8)) |
424 | 0 | { |
425 | 0 | TIFFErrorExtR(tif, module, |
426 | 0 | "Error fetching directory count"); |
427 | 0 | return (0); |
428 | 0 | } |
429 | 0 | if (tif->tif_flags & TIFF_SWAB) |
430 | 0 | TIFFSwabLong8(&dircount64); |
431 | 0 | if (dircount64 > 0xFFFF) |
432 | 0 | { |
433 | 0 | TIFFErrorExtR(tif, module, |
434 | 0 | "Sanity check on tag count failed, likely " |
435 | 0 | "corrupt TIFF"); |
436 | 0 | return (0); |
437 | 0 | } |
438 | 0 | dircount = (uint16_t)dircount64; |
439 | 0 | (void)TIFFSeekFile(tif, nextdir + 8 + dircount * 20, SEEK_SET); |
440 | 0 | if (!ReadOK(tif, &nextnextdir, 8)) |
441 | 0 | { |
442 | 0 | TIFFErrorExtR(tif, module, "Error fetching directory link"); |
443 | 0 | return (0); |
444 | 0 | } |
445 | 0 | if (tif->tif_flags & TIFF_SWAB) |
446 | 0 | TIFFSwabLong8(&nextnextdir); |
447 | 0 | if (nextnextdir == tif->tif_diroff) |
448 | 0 | { |
449 | 0 | uint64_t m; |
450 | 0 | m = 0; |
451 | 0 | (void)TIFFSeekFile(tif, nextdir + 8 + dircount * 20, |
452 | 0 | SEEK_SET); |
453 | 0 | if (!WriteOK(tif, &m, 8)) |
454 | 0 | { |
455 | 0 | TIFFErrorExtR(tif, module, |
456 | 0 | "Error writing directory link"); |
457 | 0 | return (0); |
458 | 0 | } |
459 | 0 | tif->tif_diroff = 0; |
460 | | /* Force a full-traversal to reach the zeroed pointer */ |
461 | 0 | tif->tif_lastdiroff = 0; |
462 | 0 | break; |
463 | 0 | } |
464 | 0 | nextdir = nextnextdir; |
465 | 0 | } |
466 | 0 | } |
467 | | /* Remove skipped offset from IFD loop directory list. */ |
468 | 0 | _TIFFRemoveEntryFromDirectoryListByOffset(tif, torewritediroff); |
469 | 0 | } |
470 | | |
471 | | /* |
472 | | * Now use TIFFWriteDirectorySec() normally. |
473 | | */ |
474 | 0 | return TIFFWriteDirectorySec(tif, isimage, imagedone, pdiroff); |
475 | 0 | } /*-- TIFFRewriteDirectorySec() --*/ |
476 | | |
477 | | /* |
478 | | * Similar to TIFFWriteDirectory(), but if the directory has already |
479 | | * been written once, it is relocated to the end of the file, in case it |
480 | | * has changed in size. Note that this will result in the loss of the |
481 | | * previously used directory space. |
482 | | */ |
483 | | int TIFFRewriteDirectory(TIFF *tif) |
484 | 0 | { |
485 | 0 | return TIFFRewriteDirectorySec(tif, TRUE, TRUE, NULL); |
486 | 0 | } |
487 | | |
488 | | static int TIFFWriteDirectorySec(TIFF *tif, int isimage, int imagedone, |
489 | | uint64_t *pdiroff) |
490 | 0 | { |
491 | 0 | static const char module[] = "TIFFWriteDirectorySec"; |
492 | 0 | uint32_t ndir; |
493 | 0 | TIFFDirEntry *dir; |
494 | 0 | uint32_t dirsize; |
495 | 0 | void *dirmem; |
496 | 0 | uint32_t m; |
497 | 0 | if (tif->tif_mode == O_RDONLY) |
498 | 0 | return (1); |
499 | | |
500 | 0 | _TIFFFillStriles(tif); |
501 | | |
502 | | /* |
503 | | * Clear write state so that subsequent images with |
504 | | * different characteristics get the right buffers |
505 | | * setup for them. |
506 | | */ |
507 | 0 | if (imagedone) |
508 | 0 | { |
509 | 0 | if (tif->tif_flags & TIFF_POSTENCODE) |
510 | 0 | { |
511 | 0 | tif->tif_flags &= ~TIFF_POSTENCODE; |
512 | 0 | if (!(*tif->tif_postencode)(tif)) |
513 | 0 | { |
514 | 0 | TIFFErrorExtR(tif, module, |
515 | 0 | "Error post-encoding before directory write"); |
516 | 0 | return (0); |
517 | 0 | } |
518 | 0 | } |
519 | 0 | (*tif->tif_close)(tif); /* shutdown encoder */ |
520 | | /* |
521 | | * Flush any data that might have been written |
522 | | * by the compression close+cleanup routines. But |
523 | | * be careful not to write stuff if we didn't add data |
524 | | * in the previous steps as the "rawcc" data may well be |
525 | | * a previously read tile/strip in mixed read/write mode. |
526 | | */ |
527 | 0 | if (tif->tif_rawcc > 0 && (tif->tif_flags & TIFF_BEENWRITING) != 0) |
528 | 0 | { |
529 | 0 | if (!TIFFFlushData1(tif)) |
530 | 0 | { |
531 | 0 | TIFFErrorExtR(tif, module, |
532 | 0 | "Error flushing data before directory write"); |
533 | 0 | return (0); |
534 | 0 | } |
535 | 0 | } |
536 | 0 | if ((tif->tif_flags & TIFF_MYBUFFER) && tif->tif_rawdata) |
537 | 0 | { |
538 | 0 | _TIFFfreeExt(tif, tif->tif_rawdata); |
539 | 0 | tif->tif_rawdata = NULL; |
540 | 0 | tif->tif_rawcp = NULL; |
541 | 0 | tif->tif_rawcc = 0; |
542 | 0 | tif->tif_rawdatasize = 0; |
543 | 0 | tif->tif_rawdataoff = 0; |
544 | 0 | tif->tif_rawdataloaded = 0; |
545 | 0 | } |
546 | 0 | tif->tif_flags &= ~(TIFF_BEENWRITING | TIFF_BUFFERSETUP); |
547 | 0 | } |
548 | | |
549 | 0 | if (TIFFFieldSet(tif, FIELD_COMPRESSION) && |
550 | 0 | (tif->tif_dir.td_compression == COMPRESSION_DEFLATE)) |
551 | 0 | { |
552 | 0 | TIFFWarningExtR(tif, module, |
553 | 0 | "Creating TIFF with legacy Deflate codec identifier, " |
554 | 0 | "COMPRESSION_ADOBE_DEFLATE is more widely supported"); |
555 | 0 | } |
556 | 0 | dir = NULL; |
557 | 0 | dirmem = NULL; |
558 | 0 | dirsize = 0; |
559 | 0 | while (1) |
560 | 0 | { |
561 | | /* The first loop only determines "ndir" and uses TIFFLinkDirectory() to |
562 | | * set the offset at which the IFD is to be written to the file. |
563 | | * The second loop writes IFD entries to the file. */ |
564 | 0 | ndir = 0; |
565 | 0 | if (dir == NULL) |
566 | 0 | tif->tif_dir.td_dirdatasize_write = 0; |
567 | 0 | if (isimage) |
568 | 0 | { |
569 | | /*-- Step 1: Process named tags for an image with FIELD bits |
570 | | * associated. --*/ |
571 | 0 | if (TIFFFieldSet(tif, FIELD_IMAGEDIMENSIONS)) |
572 | 0 | { |
573 | 0 | if (!TIFFWriteDirectoryTagShortLong(tif, &ndir, dir, |
574 | 0 | TIFFTAG_IMAGEWIDTH, |
575 | 0 | tif->tif_dir.td_imagewidth)) |
576 | 0 | goto bad; |
577 | 0 | if (!TIFFWriteDirectoryTagShortLong( |
578 | 0 | tif, &ndir, dir, TIFFTAG_IMAGELENGTH, |
579 | 0 | tif->tif_dir.td_imagelength)) |
580 | 0 | goto bad; |
581 | 0 | } |
582 | 0 | if (TIFFFieldSet(tif, FIELD_TILEDIMENSIONS)) |
583 | 0 | { |
584 | 0 | if (!TIFFWriteDirectoryTagShortLong(tif, &ndir, dir, |
585 | 0 | TIFFTAG_TILEWIDTH, |
586 | 0 | tif->tif_dir.td_tilewidth)) |
587 | 0 | goto bad; |
588 | 0 | if (!TIFFWriteDirectoryTagShortLong(tif, &ndir, dir, |
589 | 0 | TIFFTAG_TILELENGTH, |
590 | 0 | tif->tif_dir.td_tilelength)) |
591 | 0 | goto bad; |
592 | 0 | } |
593 | 0 | if (TIFFFieldSet(tif, FIELD_RESOLUTION)) |
594 | 0 | { |
595 | 0 | if (!TIFFWriteDirectoryTagRational(tif, &ndir, dir, |
596 | 0 | TIFFTAG_XRESOLUTION, |
597 | 0 | tif->tif_dir.td_xresolution)) |
598 | 0 | goto bad; |
599 | 0 | if (!TIFFWriteDirectoryTagRational(tif, &ndir, dir, |
600 | 0 | TIFFTAG_YRESOLUTION, |
601 | 0 | tif->tif_dir.td_yresolution)) |
602 | 0 | goto bad; |
603 | 0 | } |
604 | 0 | if (TIFFFieldSet(tif, FIELD_POSITION)) |
605 | 0 | { |
606 | 0 | if (!TIFFWriteDirectoryTagRational(tif, &ndir, dir, |
607 | 0 | TIFFTAG_XPOSITION, |
608 | 0 | tif->tif_dir.td_xposition)) |
609 | 0 | goto bad; |
610 | 0 | if (!TIFFWriteDirectoryTagRational(tif, &ndir, dir, |
611 | 0 | TIFFTAG_YPOSITION, |
612 | 0 | tif->tif_dir.td_yposition)) |
613 | 0 | goto bad; |
614 | 0 | } |
615 | 0 | if (TIFFFieldSet(tif, FIELD_SUBFILETYPE)) |
616 | 0 | { |
617 | 0 | if (!TIFFWriteDirectoryTagLong(tif, &ndir, dir, |
618 | 0 | TIFFTAG_SUBFILETYPE, |
619 | 0 | tif->tif_dir.td_subfiletype)) |
620 | 0 | goto bad; |
621 | 0 | } |
622 | 0 | if (TIFFFieldSet(tif, FIELD_BITSPERSAMPLE)) |
623 | 0 | { |
624 | 0 | if (!TIFFWriteDirectoryTagShortPerSample( |
625 | 0 | tif, &ndir, dir, TIFFTAG_BITSPERSAMPLE, |
626 | 0 | tif->tif_dir.td_bitspersample)) |
627 | 0 | goto bad; |
628 | 0 | } |
629 | 0 | if (TIFFFieldSet(tif, FIELD_COMPRESSION)) |
630 | 0 | { |
631 | 0 | if (!TIFFWriteDirectoryTagShort(tif, &ndir, dir, |
632 | 0 | TIFFTAG_COMPRESSION, |
633 | 0 | tif->tif_dir.td_compression)) |
634 | 0 | goto bad; |
635 | 0 | } |
636 | 0 | if (TIFFFieldSet(tif, FIELD_PHOTOMETRIC)) |
637 | 0 | { |
638 | 0 | if (!TIFFWriteDirectoryTagShort(tif, &ndir, dir, |
639 | 0 | TIFFTAG_PHOTOMETRIC, |
640 | 0 | tif->tif_dir.td_photometric)) |
641 | 0 | goto bad; |
642 | 0 | } |
643 | 0 | if (TIFFFieldSet(tif, FIELD_THRESHHOLDING)) |
644 | 0 | { |
645 | 0 | if (!TIFFWriteDirectoryTagShort(tif, &ndir, dir, |
646 | 0 | TIFFTAG_THRESHHOLDING, |
647 | 0 | tif->tif_dir.td_threshholding)) |
648 | 0 | goto bad; |
649 | 0 | } |
650 | 0 | if (TIFFFieldSet(tif, FIELD_FILLORDER)) |
651 | 0 | { |
652 | 0 | if (!TIFFWriteDirectoryTagShort(tif, &ndir, dir, |
653 | 0 | TIFFTAG_FILLORDER, |
654 | 0 | tif->tif_dir.td_fillorder)) |
655 | 0 | goto bad; |
656 | 0 | } |
657 | 0 | if (TIFFFieldSet(tif, FIELD_ORIENTATION)) |
658 | 0 | { |
659 | 0 | if (!TIFFWriteDirectoryTagShort(tif, &ndir, dir, |
660 | 0 | TIFFTAG_ORIENTATION, |
661 | 0 | tif->tif_dir.td_orientation)) |
662 | 0 | goto bad; |
663 | 0 | } |
664 | 0 | if (TIFFFieldSet(tif, FIELD_SAMPLESPERPIXEL)) |
665 | 0 | { |
666 | 0 | if (!TIFFWriteDirectoryTagShort( |
667 | 0 | tif, &ndir, dir, TIFFTAG_SAMPLESPERPIXEL, |
668 | 0 | tif->tif_dir.td_samplesperpixel)) |
669 | 0 | goto bad; |
670 | 0 | } |
671 | 0 | if (TIFFFieldSet(tif, FIELD_ROWSPERSTRIP)) |
672 | 0 | { |
673 | 0 | if (!TIFFWriteDirectoryTagShortLong( |
674 | 0 | tif, &ndir, dir, TIFFTAG_ROWSPERSTRIP, |
675 | 0 | tif->tif_dir.td_rowsperstrip)) |
676 | 0 | goto bad; |
677 | 0 | } |
678 | 0 | if (TIFFFieldSet(tif, FIELD_MINSAMPLEVALUE)) |
679 | 0 | { |
680 | 0 | if (!TIFFWriteDirectoryTagShortPerSample( |
681 | 0 | tif, &ndir, dir, TIFFTAG_MINSAMPLEVALUE, |
682 | 0 | tif->tif_dir.td_minsamplevalue)) |
683 | 0 | goto bad; |
684 | 0 | } |
685 | 0 | if (TIFFFieldSet(tif, FIELD_MAXSAMPLEVALUE)) |
686 | 0 | { |
687 | 0 | if (!TIFFWriteDirectoryTagShortPerSample( |
688 | 0 | tif, &ndir, dir, TIFFTAG_MAXSAMPLEVALUE, |
689 | 0 | tif->tif_dir.td_maxsamplevalue)) |
690 | 0 | goto bad; |
691 | 0 | } |
692 | 0 | if (TIFFFieldSet(tif, FIELD_PLANARCONFIG)) |
693 | 0 | { |
694 | 0 | if (!TIFFWriteDirectoryTagShort(tif, &ndir, dir, |
695 | 0 | TIFFTAG_PLANARCONFIG, |
696 | 0 | tif->tif_dir.td_planarconfig)) |
697 | 0 | goto bad; |
698 | 0 | } |
699 | 0 | if (TIFFFieldSet(tif, FIELD_RESOLUTIONUNIT)) |
700 | 0 | { |
701 | 0 | if (!TIFFWriteDirectoryTagShort(tif, &ndir, dir, |
702 | 0 | TIFFTAG_RESOLUTIONUNIT, |
703 | 0 | tif->tif_dir.td_resolutionunit)) |
704 | 0 | goto bad; |
705 | 0 | } |
706 | 0 | if (TIFFFieldSet(tif, FIELD_PAGENUMBER)) |
707 | 0 | { |
708 | 0 | if (!TIFFWriteDirectoryTagShortArray( |
709 | 0 | tif, &ndir, dir, TIFFTAG_PAGENUMBER, 2, |
710 | 0 | &tif->tif_dir.td_pagenumber[0])) |
711 | 0 | goto bad; |
712 | 0 | } |
713 | 0 | if (TIFFFieldSet(tif, FIELD_STRIPBYTECOUNTS)) |
714 | 0 | { |
715 | | /* Check td_stripbytecount_p for NULL pointer (bug#749) */ |
716 | 0 | if (tif->tif_dir.td_stripbytecount_p == NULL) |
717 | 0 | { |
718 | 0 | TIFFErrorExtR( |
719 | 0 | tif, module, |
720 | 0 | "StripByteCount array is not set, pointer is NULL"); |
721 | 0 | goto bad; |
722 | 0 | } |
723 | 0 | if (!isTiled(tif)) |
724 | 0 | { |
725 | 0 | if (!TIFFWriteDirectoryTagLongLong8Array( |
726 | 0 | tif, &ndir, dir, TIFFTAG_STRIPBYTECOUNTS, |
727 | 0 | tif->tif_dir.td_nstrips, |
728 | 0 | tif->tif_dir.td_stripbytecount_p)) |
729 | 0 | goto bad; |
730 | 0 | } |
731 | 0 | else |
732 | 0 | { |
733 | 0 | if (!TIFFWriteDirectoryTagLongLong8Array( |
734 | 0 | tif, &ndir, dir, TIFFTAG_TILEBYTECOUNTS, |
735 | 0 | tif->tif_dir.td_nstrips, |
736 | 0 | tif->tif_dir.td_stripbytecount_p)) |
737 | 0 | goto bad; |
738 | 0 | } |
739 | 0 | } |
740 | 0 | if (TIFFFieldSet(tif, FIELD_STRIPOFFSETS)) |
741 | 0 | { |
742 | | /* Check td_stripoffset_p for NULL pointer (bug#749) */ |
743 | 0 | if (tif->tif_dir.td_stripoffset_p == NULL) |
744 | 0 | { |
745 | 0 | TIFFErrorExtR( |
746 | 0 | tif, module, |
747 | 0 | "StripByteOffset array is not set, pointer is NULL"); |
748 | 0 | goto bad; |
749 | 0 | } |
750 | 0 | if (!isTiled(tif)) |
751 | 0 | { |
752 | | /* td_stripoffset_p might be NULL in an odd OJPEG case. See |
753 | | * tif_dirread.c around line 3634. |
754 | | * XXX: OJPEG hack. |
755 | | * If a) compression is OJPEG, b) it's not a tiled TIFF, |
756 | | * and c) the number of strips is 1, |
757 | | * then we tolerate the absence of stripoffsets tag, |
758 | | * because, presumably, all required data is in the |
759 | | * JpegInterchangeFormat stream. |
760 | | * We can get here when using tiffset on such a file. |
761 | | * See http://bugzilla.maptools.org/show_bug.cgi?id=2500 |
762 | | */ |
763 | 0 | if (tif->tif_dir.td_stripoffset_p != NULL && |
764 | 0 | !TIFFWriteDirectoryTagLongLong8Array( |
765 | 0 | tif, &ndir, dir, TIFFTAG_STRIPOFFSETS, |
766 | 0 | tif->tif_dir.td_nstrips, |
767 | 0 | tif->tif_dir.td_stripoffset_p)) |
768 | 0 | goto bad; |
769 | 0 | } |
770 | 0 | else |
771 | 0 | { |
772 | 0 | if (!TIFFWriteDirectoryTagLongLong8Array( |
773 | 0 | tif, &ndir, dir, TIFFTAG_TILEOFFSETS, |
774 | 0 | tif->tif_dir.td_nstrips, |
775 | 0 | tif->tif_dir.td_stripoffset_p)) |
776 | 0 | goto bad; |
777 | 0 | } |
778 | 0 | } |
779 | 0 | if (TIFFFieldSet(tif, FIELD_COLORMAP)) |
780 | 0 | { |
781 | 0 | if (!TIFFWriteDirectoryTagColormap(tif, &ndir, dir)) |
782 | 0 | goto bad; |
783 | 0 | } |
784 | 0 | if (TIFFFieldSet(tif, FIELD_EXTRASAMPLES)) |
785 | 0 | { |
786 | 0 | if (tif->tif_dir.td_extrasamples) |
787 | 0 | { |
788 | 0 | uint16_t na; |
789 | 0 | uint16_t *nb; |
790 | 0 | TIFFGetFieldDefaulted(tif, TIFFTAG_EXTRASAMPLES, &na, &nb); |
791 | 0 | if (!TIFFWriteDirectoryTagShortArray( |
792 | 0 | tif, &ndir, dir, TIFFTAG_EXTRASAMPLES, na, nb)) |
793 | 0 | goto bad; |
794 | 0 | } |
795 | 0 | } |
796 | 0 | if (TIFFFieldSet(tif, FIELD_SAMPLEFORMAT)) |
797 | 0 | { |
798 | 0 | if (!TIFFWriteDirectoryTagShortPerSample( |
799 | 0 | tif, &ndir, dir, TIFFTAG_SAMPLEFORMAT, |
800 | 0 | tif->tif_dir.td_sampleformat)) |
801 | 0 | goto bad; |
802 | 0 | } |
803 | 0 | if (TIFFFieldSet(tif, FIELD_SMINSAMPLEVALUE)) |
804 | 0 | { |
805 | 0 | if (!TIFFWriteDirectoryTagSampleformatArray( |
806 | 0 | tif, &ndir, dir, TIFFTAG_SMINSAMPLEVALUE, |
807 | 0 | tif->tif_dir.td_samplesperpixel, |
808 | 0 | tif->tif_dir.td_sminsamplevalue)) |
809 | 0 | goto bad; |
810 | 0 | } |
811 | 0 | if (TIFFFieldSet(tif, FIELD_SMAXSAMPLEVALUE)) |
812 | 0 | { |
813 | 0 | if (!TIFFWriteDirectoryTagSampleformatArray( |
814 | 0 | tif, &ndir, dir, TIFFTAG_SMAXSAMPLEVALUE, |
815 | 0 | tif->tif_dir.td_samplesperpixel, |
816 | 0 | tif->tif_dir.td_smaxsamplevalue)) |
817 | 0 | goto bad; |
818 | 0 | } |
819 | 0 | if (TIFFFieldSet(tif, FIELD_IMAGEDEPTH)) |
820 | 0 | { |
821 | 0 | if (!TIFFWriteDirectoryTagLong(tif, &ndir, dir, |
822 | 0 | TIFFTAG_IMAGEDEPTH, |
823 | 0 | tif->tif_dir.td_imagedepth)) |
824 | 0 | goto bad; |
825 | 0 | } |
826 | 0 | if (TIFFFieldSet(tif, FIELD_TILEDEPTH)) |
827 | 0 | { |
828 | 0 | if (!TIFFWriteDirectoryTagLong(tif, &ndir, dir, |
829 | 0 | TIFFTAG_TILEDEPTH, |
830 | 0 | tif->tif_dir.td_tiledepth)) |
831 | 0 | goto bad; |
832 | 0 | } |
833 | 0 | if (TIFFFieldSet(tif, FIELD_HALFTONEHINTS)) |
834 | 0 | { |
835 | 0 | if (!TIFFWriteDirectoryTagShortArray( |
836 | 0 | tif, &ndir, dir, TIFFTAG_HALFTONEHINTS, 2, |
837 | 0 | &tif->tif_dir.td_halftonehints[0])) |
838 | 0 | goto bad; |
839 | 0 | } |
840 | 0 | if (TIFFFieldSet(tif, FIELD_YCBCRSUBSAMPLING)) |
841 | 0 | { |
842 | 0 | if (!TIFFWriteDirectoryTagShortArray( |
843 | 0 | tif, &ndir, dir, TIFFTAG_YCBCRSUBSAMPLING, 2, |
844 | 0 | &tif->tif_dir.td_ycbcrsubsampling[0])) |
845 | 0 | goto bad; |
846 | 0 | } |
847 | 0 | if (TIFFFieldSet(tif, FIELD_YCBCRPOSITIONING)) |
848 | 0 | { |
849 | 0 | if (!TIFFWriteDirectoryTagShort( |
850 | 0 | tif, &ndir, dir, TIFFTAG_YCBCRPOSITIONING, |
851 | 0 | tif->tif_dir.td_ycbcrpositioning)) |
852 | 0 | goto bad; |
853 | 0 | } |
854 | 0 | if (TIFFFieldSet(tif, FIELD_REFBLACKWHITE)) |
855 | 0 | { |
856 | 0 | if (!TIFFWriteDirectoryTagRationalArray( |
857 | 0 | tif, &ndir, dir, TIFFTAG_REFERENCEBLACKWHITE, 6, |
858 | 0 | tif->tif_dir.td_refblackwhite)) |
859 | 0 | goto bad; |
860 | 0 | } |
861 | 0 | if (TIFFFieldSet(tif, FIELD_TRANSFERFUNCTION)) |
862 | 0 | { |
863 | 0 | if (!TIFFWriteDirectoryTagTransferfunction(tif, &ndir, dir)) |
864 | 0 | goto bad; |
865 | 0 | } |
866 | 0 | if (TIFFFieldSet(tif, FIELD_INKNAMES)) |
867 | 0 | { |
868 | 0 | if (!TIFFWriteDirectoryTagAscii( |
869 | 0 | tif, &ndir, dir, TIFFTAG_INKNAMES, |
870 | 0 | tif->tif_dir.td_inknameslen, tif->tif_dir.td_inknames)) |
871 | 0 | goto bad; |
872 | 0 | } |
873 | 0 | if (TIFFFieldSet(tif, FIELD_NUMBEROFINKS)) |
874 | 0 | { |
875 | 0 | if (!TIFFWriteDirectoryTagShort(tif, &ndir, dir, |
876 | 0 | TIFFTAG_NUMBEROFINKS, |
877 | 0 | tif->tif_dir.td_numberofinks)) |
878 | 0 | goto bad; |
879 | 0 | } |
880 | 0 | if (TIFFFieldSet(tif, FIELD_SUBIFD)) |
881 | 0 | { |
882 | 0 | if (!TIFFWriteDirectoryTagSubifd(tif, &ndir, dir)) |
883 | 0 | goto bad; |
884 | 0 | } |
885 | | /*-- Step 2: Process named tags for an image with FIELD bits |
886 | | added by a codec. |
887 | | Attention: There is only code for some field_types, |
888 | | which are actually used by current codecs. --*/ |
889 | 0 | { |
890 | 0 | uint32_t n; |
891 | 0 | for (n = 0; n < tif->tif_nfields; n++) |
892 | 0 | { |
893 | 0 | const TIFFField *o; |
894 | 0 | o = tif->tif_fields[n]; |
895 | 0 | if ((o->field_bit >= FIELD_CODEC) && |
896 | 0 | (TIFFFieldSet(tif, o->field_bit))) |
897 | 0 | { |
898 | 0 | switch (o->set_get_field_type) |
899 | 0 | { |
900 | 0 | case TIFF_SETGET_ASCII: |
901 | 0 | { |
902 | 0 | uint32_t pa; |
903 | 0 | char *pb; |
904 | 0 | assert(o->field_type == TIFF_ASCII); |
905 | 0 | assert(o->field_readcount == TIFF_VARIABLE); |
906 | 0 | assert(o->field_passcount == 0); |
907 | 0 | TIFFGetField(tif, o->field_tag, &pb); |
908 | 0 | pa = (uint32_t)(strlen(pb) + 1); |
909 | 0 | if (!TIFFWriteDirectoryTagAscii( |
910 | 0 | tif, &ndir, dir, (uint16_t)o->field_tag, |
911 | 0 | pa, pb)) |
912 | 0 | goto bad; |
913 | 0 | } |
914 | 0 | break; |
915 | 0 | case TIFF_SETGET_UINT16: |
916 | 0 | { |
917 | 0 | uint16_t p; |
918 | 0 | assert(o->field_type == TIFF_SHORT); |
919 | 0 | assert(o->field_readcount == 1); |
920 | 0 | assert(o->field_passcount == 0); |
921 | 0 | TIFFGetField(tif, o->field_tag, &p); |
922 | 0 | if (!TIFFWriteDirectoryTagShort( |
923 | 0 | tif, &ndir, dir, (uint16_t)o->field_tag, |
924 | 0 | p)) |
925 | 0 | goto bad; |
926 | 0 | } |
927 | 0 | break; |
928 | 0 | case TIFF_SETGET_UINT32: |
929 | 0 | { |
930 | 0 | uint32_t p; |
931 | 0 | assert(o->field_type == TIFF_LONG); |
932 | 0 | assert(o->field_readcount == 1); |
933 | 0 | assert(o->field_passcount == 0); |
934 | 0 | TIFFGetField(tif, o->field_tag, &p); |
935 | 0 | if (!TIFFWriteDirectoryTagLong( |
936 | 0 | tif, &ndir, dir, (uint16_t)o->field_tag, |
937 | 0 | p)) |
938 | 0 | goto bad; |
939 | 0 | } |
940 | 0 | break; |
941 | 0 | case TIFF_SETGET_C32_UINT8: |
942 | 0 | { |
943 | 0 | uint32_t pa; |
944 | 0 | void *pb; |
945 | 0 | assert(o->field_type == TIFF_UNDEFINED); |
946 | 0 | assert(o->field_readcount == TIFF_VARIABLE2); |
947 | 0 | assert(o->field_passcount == 1); |
948 | 0 | TIFFGetField(tif, o->field_tag, &pa, &pb); |
949 | 0 | if (!TIFFWriteDirectoryTagUndefinedArray( |
950 | 0 | tif, &ndir, dir, (uint16_t)o->field_tag, |
951 | 0 | pa, (uint8_t *)pb)) |
952 | 0 | goto bad; |
953 | 0 | } |
954 | 0 | break; |
955 | 0 | default: |
956 | 0 | TIFFErrorExtR( |
957 | 0 | tif, module, |
958 | 0 | "Cannot write tag %" PRIu32 " (%s)", |
959 | 0 | TIFFFieldTag(o), |
960 | 0 | o->field_name ? o->field_name : "unknown"); |
961 | 0 | goto bad; |
962 | 0 | } |
963 | 0 | } |
964 | 0 | } |
965 | 0 | } |
966 | 0 | } |
967 | | /*-- Step 3: Process custom tags without FIELD bit for an image |
968 | | * or for custom IFDs (e.g. EXIF) with !isimage. --*/ |
969 | 0 | for (m = 0; m < (uint32_t)(tif->tif_dir.td_customValueCount); m++) |
970 | 0 | { |
971 | 0 | uint16_t tag = |
972 | 0 | (uint16_t)tif->tif_dir.td_customValues[m].info->field_tag; |
973 | 0 | uint32_t count = tif->tif_dir.td_customValues[m].count; |
974 | 0 | switch (tif->tif_dir.td_customValues[m].info->field_type) |
975 | 0 | { |
976 | 0 | case TIFF_ASCII: |
977 | 0 | if (!TIFFWriteDirectoryTagAscii( |
978 | 0 | tif, &ndir, dir, tag, count, |
979 | 0 | (char *)tif->tif_dir.td_customValues[m].value)) |
980 | 0 | goto bad; |
981 | 0 | break; |
982 | 0 | case TIFF_UNDEFINED: |
983 | 0 | if (!TIFFWriteDirectoryTagUndefinedArray( |
984 | 0 | tif, &ndir, dir, tag, count, |
985 | 0 | (uint8_t *)tif->tif_dir.td_customValues[m].value)) |
986 | 0 | goto bad; |
987 | 0 | break; |
988 | 0 | case TIFF_BYTE: |
989 | 0 | if (!TIFFWriteDirectoryTagByteArray( |
990 | 0 | tif, &ndir, dir, tag, count, |
991 | 0 | (uint8_t *)tif->tif_dir.td_customValues[m].value)) |
992 | 0 | goto bad; |
993 | 0 | break; |
994 | 0 | case TIFF_SBYTE: |
995 | 0 | if (!TIFFWriteDirectoryTagSbyteArray( |
996 | 0 | tif, &ndir, dir, tag, count, |
997 | 0 | (int8_t *)tif->tif_dir.td_customValues[m].value)) |
998 | 0 | goto bad; |
999 | 0 | break; |
1000 | 0 | case TIFF_SHORT: |
1001 | 0 | if (!TIFFWriteDirectoryTagShortArray( |
1002 | 0 | tif, &ndir, dir, tag, count, |
1003 | 0 | (uint16_t *)tif->tif_dir.td_customValues[m].value)) |
1004 | 0 | goto bad; |
1005 | 0 | break; |
1006 | 0 | case TIFF_SSHORT: |
1007 | 0 | if (!TIFFWriteDirectoryTagSshortArray( |
1008 | 0 | tif, &ndir, dir, tag, count, |
1009 | 0 | (int16_t *)tif->tif_dir.td_customValues[m].value)) |
1010 | 0 | goto bad; |
1011 | 0 | break; |
1012 | 0 | case TIFF_LONG: |
1013 | 0 | if (!TIFFWriteDirectoryTagLongArray( |
1014 | 0 | tif, &ndir, dir, tag, count, |
1015 | 0 | (uint32_t *)tif->tif_dir.td_customValues[m].value)) |
1016 | 0 | goto bad; |
1017 | 0 | break; |
1018 | 0 | case TIFF_SLONG: |
1019 | 0 | if (!TIFFWriteDirectoryTagSlongArray( |
1020 | 0 | tif, &ndir, dir, tag, count, |
1021 | 0 | (int32_t *)tif->tif_dir.td_customValues[m].value)) |
1022 | 0 | goto bad; |
1023 | 0 | break; |
1024 | 0 | case TIFF_LONG8: |
1025 | 0 | if (!TIFFWriteDirectoryTagLong8Array( |
1026 | 0 | tif, &ndir, dir, tag, count, |
1027 | 0 | (uint64_t *)tif->tif_dir.td_customValues[m].value)) |
1028 | 0 | goto bad; |
1029 | 0 | break; |
1030 | 0 | case TIFF_SLONG8: |
1031 | 0 | if (!TIFFWriteDirectoryTagSlong8Array( |
1032 | 0 | tif, &ndir, dir, tag, count, |
1033 | 0 | (int64_t *)tif->tif_dir.td_customValues[m].value)) |
1034 | 0 | goto bad; |
1035 | 0 | break; |
1036 | 0 | case TIFF_RATIONAL: |
1037 | 0 | { |
1038 | | /*-- Rational2Double: For Rationals evaluate |
1039 | | * "set_get_field_type" to determine internal storage size. |
1040 | | */ |
1041 | 0 | int tv_size; |
1042 | 0 | tv_size = TIFFFieldSetGetSize( |
1043 | 0 | tif->tif_dir.td_customValues[m].info); |
1044 | 0 | if (tv_size == 8) |
1045 | 0 | { |
1046 | 0 | if (!TIFFWriteDirectoryTagRationalDoubleArray( |
1047 | 0 | tif, &ndir, dir, tag, count, |
1048 | 0 | (double *)tif->tif_dir.td_customValues[m].value)) |
1049 | 0 | goto bad; |
1050 | 0 | } |
1051 | 0 | else |
1052 | 0 | { |
1053 | | /*-- default should be tv_size == 4 */ |
1054 | 0 | if (!TIFFWriteDirectoryTagRationalArray( |
1055 | 0 | tif, &ndir, dir, tag, count, |
1056 | 0 | (float *)tif->tif_dir.td_customValues[m].value)) |
1057 | 0 | goto bad; |
1058 | | /*-- ToDo: After Testing, this should be removed and |
1059 | | * tv_size==4 should be set as default. */ |
1060 | 0 | if (tv_size != 4) |
1061 | 0 | { |
1062 | 0 | TIFFErrorExtR( |
1063 | 0 | tif, "TIFFLib: _TIFFWriteDirectorySec()", |
1064 | 0 | "Rational2Double: .set_get_field_type is " |
1065 | 0 | "not 4 but %d", |
1066 | 0 | tv_size); |
1067 | 0 | } |
1068 | 0 | } |
1069 | 0 | } |
1070 | 0 | break; |
1071 | 0 | case TIFF_SRATIONAL: |
1072 | 0 | { |
1073 | | /*-- Rational2Double: For Rationals evaluate |
1074 | | * "set_get_field_type" to determine internal storage size. |
1075 | | */ |
1076 | 0 | int tv_size; |
1077 | 0 | tv_size = TIFFFieldSetGetSize( |
1078 | 0 | tif->tif_dir.td_customValues[m].info); |
1079 | 0 | if (tv_size == 8) |
1080 | 0 | { |
1081 | 0 | if (!TIFFWriteDirectoryTagSrationalDoubleArray( |
1082 | 0 | tif, &ndir, dir, tag, count, |
1083 | 0 | (double *)tif->tif_dir.td_customValues[m].value)) |
1084 | 0 | goto bad; |
1085 | 0 | } |
1086 | 0 | else |
1087 | 0 | { |
1088 | | /*-- default should be tv_size == 4 */ |
1089 | 0 | if (!TIFFWriteDirectoryTagSrationalArray( |
1090 | 0 | tif, &ndir, dir, tag, count, |
1091 | 0 | (float *)tif->tif_dir.td_customValues[m].value)) |
1092 | 0 | goto bad; |
1093 | | /*-- ToDo: After Testing, this should be removed and |
1094 | | * tv_size==4 should be set as default. */ |
1095 | 0 | if (tv_size != 4) |
1096 | 0 | { |
1097 | 0 | TIFFErrorExtR( |
1098 | 0 | tif, "TIFFLib: _TIFFWriteDirectorySec()", |
1099 | 0 | "Rational2Double: .set_get_field_type is " |
1100 | 0 | "not 4 but %d", |
1101 | 0 | tv_size); |
1102 | 0 | } |
1103 | 0 | } |
1104 | 0 | } |
1105 | 0 | break; |
1106 | 0 | case TIFF_FLOAT: |
1107 | 0 | if (!TIFFWriteDirectoryTagFloatArray( |
1108 | 0 | tif, &ndir, dir, tag, count, |
1109 | 0 | (float *)tif->tif_dir.td_customValues[m].value)) |
1110 | 0 | goto bad; |
1111 | 0 | break; |
1112 | 0 | case TIFF_DOUBLE: |
1113 | 0 | if (!TIFFWriteDirectoryTagDoubleArray( |
1114 | 0 | tif, &ndir, dir, tag, count, |
1115 | 0 | (double *)tif->tif_dir.td_customValues[m].value)) |
1116 | 0 | goto bad; |
1117 | 0 | break; |
1118 | 0 | case TIFF_IFD: |
1119 | 0 | if (!TIFFWriteDirectoryTagIfdArray( |
1120 | 0 | tif, &ndir, dir, tag, count, |
1121 | 0 | (uint32_t *)tif->tif_dir.td_customValues[m].value)) |
1122 | 0 | goto bad; |
1123 | 0 | break; |
1124 | 0 | case TIFF_IFD8: |
1125 | 0 | if (!TIFFWriteDirectoryTagIfdIfd8Array( |
1126 | 0 | tif, &ndir, dir, tag, count, |
1127 | 0 | (uint64_t *)tif->tif_dir.td_customValues[m].value)) |
1128 | 0 | goto bad; |
1129 | 0 | break; |
1130 | 0 | default: |
1131 | 0 | assert(0); /* we should never get here */ |
1132 | 0 | break; |
1133 | 0 | } |
1134 | 0 | } |
1135 | | /* "break" if IFD has been written above in second pass.*/ |
1136 | 0 | if (dir != NULL) |
1137 | 0 | break; |
1138 | | |
1139 | | /* Evaluate IFD data size: Finally, add the size of the IFD tag entries |
1140 | | * themselves. */ |
1141 | 0 | if (!(tif->tif_flags & TIFF_BIGTIFF)) |
1142 | 0 | tif->tif_dir.td_dirdatasize_write += 2 + ndir * 12 + 4; |
1143 | 0 | else |
1144 | 0 | tif->tif_dir.td_dirdatasize_write += 8 + ndir * 20 + 8; |
1145 | | |
1146 | | /* Setup a new directory within first pass. */ |
1147 | 0 | dir = (TIFFDirEntry *)_TIFFmallocExt(tif, ndir * sizeof(TIFFDirEntry)); |
1148 | 0 | if (dir == NULL) |
1149 | 0 | { |
1150 | 0 | TIFFErrorExtR(tif, module, "Out of memory"); |
1151 | 0 | goto bad; |
1152 | 0 | } |
1153 | 0 | if (isimage) |
1154 | 0 | { |
1155 | | /* Check, weather the IFD to be written is new or an already written |
1156 | | * IFD can be overwritten or needs to be re-written to a different |
1157 | | * location in the file because the IFD is extended with additional |
1158 | | * tags or the IFD data size is increased. |
1159 | | * - tif_diroff == 0, if a new directory has to be linked. |
1160 | | * - tif_diroff != 0, IFD has been re-read from file and will be |
1161 | | * overwritten or re-written. |
1162 | | */ |
1163 | 0 | if (tif->tif_diroff == 0) |
1164 | 0 | { |
1165 | 0 | if (!TIFFLinkDirectory(tif)) |
1166 | 0 | goto bad; |
1167 | 0 | } |
1168 | 0 | else if (tif->tif_dir.td_dirdatasize_write > |
1169 | 0 | tif->tif_dir.td_dirdatasize_read) |
1170 | 0 | { |
1171 | 0 | if (dir != NULL) |
1172 | 0 | { |
1173 | 0 | _TIFFfreeExt(tif, dir); |
1174 | 0 | dir = NULL; |
1175 | 0 | } |
1176 | 0 | if (!TIFFRewriteDirectorySec(tif, isimage, imagedone, pdiroff)) |
1177 | 0 | goto bad; |
1178 | 0 | return (1); |
1179 | 0 | } |
1180 | 0 | } |
1181 | 0 | else |
1182 | 0 | { |
1183 | | /* For !isimage, which means custom-IFD like EXIFIFD or |
1184 | | * checkpointing an IFD, determine whether to overwrite or append at |
1185 | | * the end of the file. |
1186 | | */ |
1187 | 0 | if (!((tif->tif_dir.td_dirdatasize_read > 0) && |
1188 | 0 | (tif->tif_dir.td_dirdatasize_write <= |
1189 | 0 | tif->tif_dir.td_dirdatasize_read))) |
1190 | 0 | { |
1191 | | /* Append at end of file and increment to an even offset. */ |
1192 | 0 | tif->tif_diroff = |
1193 | 0 | (TIFFSeekFile(tif, 0, SEEK_END) + 1) & (~((toff_t)1)); |
1194 | 0 | } |
1195 | 0 | } |
1196 | | /* Return IFD offset */ |
1197 | 0 | if (pdiroff != NULL) |
1198 | 0 | *pdiroff = tif->tif_diroff; |
1199 | 0 | if (!(tif->tif_flags & TIFF_BIGTIFF)) |
1200 | 0 | dirsize = 2 + ndir * 12 + 4; |
1201 | 0 | else |
1202 | 0 | dirsize = 8 + ndir * 20 + 8; |
1203 | | /* Append IFD data stright after the IFD tag entries. |
1204 | | * Data that does not fit into an IFD tag entry is written to the file |
1205 | | * in the second pass of the while loop. That offset is stored in "dir". |
1206 | | */ |
1207 | 0 | tif->tif_dataoff = tif->tif_diroff + dirsize; |
1208 | 0 | if (!(tif->tif_flags & TIFF_BIGTIFF)) |
1209 | 0 | tif->tif_dataoff = (uint32_t)tif->tif_dataoff; |
1210 | 0 | if ((tif->tif_dataoff < tif->tif_diroff) || |
1211 | 0 | (tif->tif_dataoff < (uint64_t)dirsize)) |
1212 | 0 | { |
1213 | 0 | TIFFErrorExtR(tif, module, "Maximum TIFF file size exceeded"); |
1214 | 0 | goto bad; |
1215 | 0 | } |
1216 | 0 | if (tif->tif_dataoff & 1) |
1217 | 0 | tif->tif_dataoff++; |
1218 | 0 | } /* while() */ |
1219 | 0 | if (isimage) |
1220 | 0 | { |
1221 | | /* For SubIFDs remember offset of SubIFD tag within main IFD. |
1222 | | * However, might be already done in TIFFWriteDirectoryTagSubifd() if |
1223 | | * there are more than one SubIFD. */ |
1224 | 0 | if (TIFFFieldSet(tif, FIELD_SUBIFD) && (tif->tif_subifdoff == 0)) |
1225 | 0 | { |
1226 | 0 | uint32_t na; |
1227 | 0 | TIFFDirEntry *nb; |
1228 | 0 | for (na = 0, nb = dir;; na++, nb++) |
1229 | 0 | { |
1230 | 0 | if (na == ndir) |
1231 | 0 | { |
1232 | 0 | TIFFErrorExtR(tif, module, "Cannot find SubIFD tag"); |
1233 | 0 | goto bad; |
1234 | 0 | } |
1235 | 0 | if (nb->tdir_tag == TIFFTAG_SUBIFD) |
1236 | 0 | break; |
1237 | 0 | } |
1238 | 0 | if (!(tif->tif_flags & TIFF_BIGTIFF)) |
1239 | 0 | tif->tif_subifdoff = tif->tif_diroff + 2 + na * 12 + 8; |
1240 | 0 | else |
1241 | 0 | tif->tif_subifdoff = tif->tif_diroff + 8 + na * 20 + 12; |
1242 | 0 | } |
1243 | 0 | } |
1244 | | /* Copy/swab IFD entries from "dir" into "dirmem", |
1245 | | * which is then written to file. */ |
1246 | 0 | dirmem = _TIFFmallocExt(tif, dirsize); |
1247 | 0 | if (dirmem == NULL) |
1248 | 0 | { |
1249 | 0 | TIFFErrorExtR(tif, module, "Out of memory"); |
1250 | 0 | goto bad; |
1251 | 0 | } |
1252 | 0 | if (!(tif->tif_flags & TIFF_BIGTIFF)) |
1253 | 0 | { |
1254 | 0 | uint8_t *n; |
1255 | 0 | uint32_t nTmp; |
1256 | 0 | TIFFDirEntry *o; |
1257 | 0 | n = (uint8_t *)dirmem; |
1258 | 0 | *(uint16_t *)n = (uint16_t)ndir; |
1259 | 0 | if (tif->tif_flags & TIFF_SWAB) |
1260 | 0 | TIFFSwabShort((uint16_t *)n); |
1261 | 0 | n += 2; |
1262 | 0 | o = dir; |
1263 | 0 | for (m = 0; m < ndir; m++) |
1264 | 0 | { |
1265 | 0 | *(uint16_t *)n = o->tdir_tag; |
1266 | 0 | if (tif->tif_flags & TIFF_SWAB) |
1267 | 0 | TIFFSwabShort((uint16_t *)n); |
1268 | 0 | n += 2; |
1269 | 0 | *(uint16_t *)n = o->tdir_type; |
1270 | 0 | if (tif->tif_flags & TIFF_SWAB) |
1271 | 0 | TIFFSwabShort((uint16_t *)n); |
1272 | 0 | n += 2; |
1273 | 0 | nTmp = (uint32_t)o->tdir_count; |
1274 | 0 | _TIFFmemcpy(n, &nTmp, 4); |
1275 | 0 | if (tif->tif_flags & TIFF_SWAB) |
1276 | 0 | TIFFSwabLong((uint32_t *)n); |
1277 | 0 | n += 4; |
1278 | | /* This is correct. The data has been */ |
1279 | | /* swabbed previously in TIFFWriteDirectoryTagData */ |
1280 | 0 | _TIFFmemcpy(n, &o->tdir_offset, 4); |
1281 | 0 | n += 4; |
1282 | 0 | o++; |
1283 | 0 | } |
1284 | 0 | nTmp = (uint32_t)tif->tif_nextdiroff; |
1285 | 0 | if (tif->tif_flags & TIFF_SWAB) |
1286 | 0 | TIFFSwabLong(&nTmp); |
1287 | 0 | _TIFFmemcpy(n, &nTmp, 4); |
1288 | 0 | } |
1289 | 0 | else |
1290 | 0 | { |
1291 | 0 | uint8_t *n; |
1292 | 0 | TIFFDirEntry *o; |
1293 | 0 | n = (uint8_t *)dirmem; |
1294 | 0 | *(uint64_t *)n = ndir; |
1295 | 0 | if (tif->tif_flags & TIFF_SWAB) |
1296 | 0 | TIFFSwabLong8((uint64_t *)n); |
1297 | 0 | n += 8; |
1298 | 0 | o = dir; |
1299 | 0 | for (m = 0; m < ndir; m++) |
1300 | 0 | { |
1301 | 0 | *(uint16_t *)n = o->tdir_tag; |
1302 | 0 | if (tif->tif_flags & TIFF_SWAB) |
1303 | 0 | TIFFSwabShort((uint16_t *)n); |
1304 | 0 | n += 2; |
1305 | 0 | *(uint16_t *)n = o->tdir_type; |
1306 | 0 | if (tif->tif_flags & TIFF_SWAB) |
1307 | 0 | TIFFSwabShort((uint16_t *)n); |
1308 | 0 | n += 2; |
1309 | 0 | _TIFFmemcpy(n, &o->tdir_count, 8); |
1310 | 0 | if (tif->tif_flags & TIFF_SWAB) |
1311 | 0 | TIFFSwabLong8((uint64_t *)n); |
1312 | 0 | n += 8; |
1313 | 0 | _TIFFmemcpy(n, &o->tdir_offset, 8); |
1314 | 0 | n += 8; |
1315 | 0 | o++; |
1316 | 0 | } |
1317 | 0 | _TIFFmemcpy(n, &tif->tif_nextdiroff, 8); |
1318 | 0 | if (tif->tif_flags & TIFF_SWAB) |
1319 | 0 | TIFFSwabLong8((uint64_t *)n); |
1320 | 0 | } |
1321 | 0 | _TIFFfreeExt(tif, dir); |
1322 | 0 | dir = NULL; |
1323 | 0 | if (!SeekOK(tif, tif->tif_diroff)) |
1324 | 0 | { |
1325 | 0 | TIFFErrorExtR(tif, module, |
1326 | 0 | "IO error writing directory at seek to offset"); |
1327 | 0 | goto bad; |
1328 | 0 | } |
1329 | 0 | if (!WriteOK(tif, dirmem, (tmsize_t)dirsize)) |
1330 | 0 | { |
1331 | 0 | TIFFErrorExtR(tif, module, "IO error writing directory"); |
1332 | 0 | goto bad; |
1333 | 0 | } |
1334 | 0 | _TIFFfreeExt(tif, dirmem); |
1335 | | |
1336 | | /* Increment tif_curdir if IFD wasn't already written to file and no error |
1337 | | * occurred during IFD writing above. */ |
1338 | 0 | if (isimage && !tif->tif_dir.td_iswrittentofile) |
1339 | 0 | { |
1340 | 0 | if (!((tif->tif_flags & TIFF_INSUBIFD) && |
1341 | 0 | !(TIFFFieldSet(tif, FIELD_SUBIFD)))) |
1342 | 0 | { |
1343 | | /*-- Normal main-IFD case --*/ |
1344 | 0 | if (tif->tif_curdircount != TIFF_NON_EXISTENT_DIR_NUMBER) |
1345 | 0 | { |
1346 | 0 | tif->tif_curdir = tif->tif_curdircount; |
1347 | 0 | } |
1348 | 0 | else |
1349 | 0 | { |
1350 | | /*ToDo SU: NEW_IFD_CURDIR_INCREMENTING: Delete this |
1351 | | * unexpected case after some testing time. */ |
1352 | | /* Attention: tif->tif_curdircount is already set within |
1353 | | * TIFFNumberOfDirectories() */ |
1354 | 0 | tif->tif_curdircount = TIFFNumberOfDirectories(tif); |
1355 | 0 | tif->tif_curdir = tif->tif_curdircount; |
1356 | 0 | TIFFErrorExtR( |
1357 | 0 | tif, module, |
1358 | 0 | "tif_curdircount is TIFF_NON_EXISTENT_DIR_NUMBER, " |
1359 | 0 | "not expected !! Line %d", |
1360 | 0 | __LINE__); |
1361 | 0 | goto bad; |
1362 | 0 | } |
1363 | 0 | } |
1364 | 0 | else |
1365 | 0 | { |
1366 | | /*-- SubIFD case -- */ |
1367 | | /* tif_curdir is always set to 0 for all SubIFDs. */ |
1368 | 0 | tif->tif_curdir = 0; |
1369 | 0 | } |
1370 | 0 | } |
1371 | | /* Increment tif_curdircount only if main-IFD of an image was not already |
1372 | | * present on file. */ |
1373 | | /* Check in combination with (... && !(TIFFFieldSet(tif, FIELD_SUBIFD))) |
1374 | | * is necessary here because TIFF_INSUBIFD was already set above for the |
1375 | | * next SubIFD when this main-IFD (with FIELD_SUBIFD) is currently being |
1376 | | * written. */ |
1377 | 0 | if (isimage && !tif->tif_dir.td_iswrittentofile && |
1378 | 0 | !((tif->tif_flags & TIFF_INSUBIFD) && |
1379 | 0 | !(TIFFFieldSet(tif, FIELD_SUBIFD)))) |
1380 | 0 | tif->tif_curdircount++; |
1381 | |
|
1382 | 0 | tif->tif_dir.td_iswrittentofile = TRUE; |
1383 | | |
1384 | | /* Reset SubIFD writing stage after last SubIFD has been written. */ |
1385 | 0 | if (imagedone && (tif->tif_flags & TIFF_INSUBIFD) && tif->tif_nsubifd == 0) |
1386 | 0 | tif->tif_flags &= ~TIFF_INSUBIFD; |
1387 | | |
1388 | | /* Add or update this directory to the IFD list. */ |
1389 | 0 | if (!_TIFFCheckDirNumberAndOffset(tif, tif->tif_curdir, tif->tif_diroff)) |
1390 | 0 | { |
1391 | 0 | TIFFErrorExtR(tif, module, |
1392 | 0 | "Starting directory %u at offset 0x%" PRIx64 " (%" PRIu64 |
1393 | 0 | ") might cause an IFD loop", |
1394 | 0 | tif->tif_curdir, tif->tif_diroff, tif->tif_diroff); |
1395 | 0 | } |
1396 | |
|
1397 | 0 | if (imagedone) |
1398 | 0 | { |
1399 | 0 | TIFFFreeDirectory(tif); |
1400 | 0 | tif->tif_flags &= ~TIFF_DIRTYDIRECT; |
1401 | 0 | tif->tif_flags &= ~TIFF_DIRTYSTRIP; |
1402 | | /* Reset directory-related state for subsequent directories. */ |
1403 | 0 | TIFFCreateDirectory(tif); |
1404 | 0 | } |
1405 | 0 | else |
1406 | 0 | { |
1407 | | /* IFD is only checkpointed to file (or a custom IFD like EXIF is |
1408 | | * written), thus set IFD data size written to file. */ |
1409 | 0 | tif->tif_dir.td_dirdatasize_read = tif->tif_dir.td_dirdatasize_write; |
1410 | 0 | } |
1411 | 0 | return (1); |
1412 | 0 | bad: |
1413 | 0 | if (dir != NULL) |
1414 | 0 | _TIFFfreeExt(tif, dir); |
1415 | 0 | if (dirmem != NULL) |
1416 | 0 | _TIFFfreeExt(tif, dirmem); |
1417 | 0 | return (0); |
1418 | 0 | } |
1419 | | |
1420 | | static int8_t TIFFClampDoubleToInt8(double val) |
1421 | 0 | { |
1422 | 0 | if (val > 127) |
1423 | 0 | return 127; |
1424 | 0 | if (val < -128 || val != val) |
1425 | 0 | return -128; |
1426 | 0 | return (int8_t)val; |
1427 | 0 | } |
1428 | | |
1429 | | static int16_t TIFFClampDoubleToInt16(double val) |
1430 | 0 | { |
1431 | 0 | if (val > 32767) |
1432 | 0 | return 32767; |
1433 | 0 | if (val < -32768 || val != val) |
1434 | 0 | return -32768; |
1435 | 0 | return (int16_t)val; |
1436 | 0 | } |
1437 | | |
1438 | | static int32_t TIFFClampDoubleToInt32(double val) |
1439 | 0 | { |
1440 | 0 | if (val > 0x7FFFFFFF) |
1441 | 0 | return 0x7FFFFFFF; |
1442 | 0 | if (val < -0x7FFFFFFF - 1 || val != val) |
1443 | 0 | return -0x7FFFFFFF - 1; |
1444 | 0 | return (int32_t)val; |
1445 | 0 | } |
1446 | | |
1447 | | static uint8_t TIFFClampDoubleToUInt8(double val) |
1448 | 0 | { |
1449 | 0 | if (val < 0) |
1450 | 0 | return 0; |
1451 | 0 | if (val > 255 || val != val) |
1452 | 0 | return 255; |
1453 | 0 | return (uint8_t)val; |
1454 | 0 | } |
1455 | | |
1456 | | static uint16_t TIFFClampDoubleToUInt16(double val) |
1457 | 0 | { |
1458 | 0 | if (val < 0) |
1459 | 0 | return 0; |
1460 | 0 | if (val > 65535 || val != val) |
1461 | 0 | return 65535; |
1462 | 0 | return (uint16_t)val; |
1463 | 0 | } |
1464 | | |
1465 | | static uint32_t TIFFClampDoubleToUInt32(double val) |
1466 | 0 | { |
1467 | 0 | if (val < 0) |
1468 | 0 | return 0; |
1469 | 0 | if (val > 0xFFFFFFFFU || val != val) |
1470 | 0 | return 0xFFFFFFFFU; |
1471 | 0 | return (uint32_t)val; |
1472 | 0 | } |
1473 | | |
1474 | | static int TIFFWriteDirectoryTagSampleformatArray(TIFF *tif, uint32_t *ndir, |
1475 | | TIFFDirEntry *dir, |
1476 | | uint16_t tag, uint32_t count, |
1477 | | double *value) |
1478 | 0 | { |
1479 | 0 | static const char module[] = "TIFFWriteDirectoryTagSampleformatArray"; |
1480 | 0 | void *conv; |
1481 | 0 | uint32_t i; |
1482 | 0 | int ok; |
1483 | 0 | conv = _TIFFmallocExt(tif, count * sizeof(double)); |
1484 | 0 | if (conv == NULL) |
1485 | 0 | { |
1486 | 0 | TIFFErrorExtR(tif, module, "Out of memory"); |
1487 | 0 | return (0); |
1488 | 0 | } |
1489 | | |
1490 | 0 | switch (tif->tif_dir.td_sampleformat) |
1491 | 0 | { |
1492 | 0 | case SAMPLEFORMAT_IEEEFP: |
1493 | 0 | if (tif->tif_dir.td_bitspersample <= 32) |
1494 | 0 | { |
1495 | 0 | for (i = 0; i < count; ++i) |
1496 | 0 | ((float *)conv)[i] = _TIFFClampDoubleToFloat(value[i]); |
1497 | 0 | ok = TIFFWriteDirectoryTagFloatArray(tif, ndir, dir, tag, count, |
1498 | 0 | (float *)conv); |
1499 | 0 | } |
1500 | 0 | else |
1501 | 0 | { |
1502 | 0 | ok = TIFFWriteDirectoryTagDoubleArray(tif, ndir, dir, tag, |
1503 | 0 | count, value); |
1504 | 0 | } |
1505 | 0 | break; |
1506 | 0 | case SAMPLEFORMAT_INT: |
1507 | 0 | if (tif->tif_dir.td_bitspersample <= 8) |
1508 | 0 | { |
1509 | 0 | for (i = 0; i < count; ++i) |
1510 | 0 | ((int8_t *)conv)[i] = TIFFClampDoubleToInt8(value[i]); |
1511 | 0 | ok = TIFFWriteDirectoryTagSbyteArray(tif, ndir, dir, tag, count, |
1512 | 0 | (int8_t *)conv); |
1513 | 0 | } |
1514 | 0 | else if (tif->tif_dir.td_bitspersample <= 16) |
1515 | 0 | { |
1516 | 0 | for (i = 0; i < count; ++i) |
1517 | 0 | ((int16_t *)conv)[i] = TIFFClampDoubleToInt16(value[i]); |
1518 | 0 | ok = TIFFWriteDirectoryTagSshortArray(tif, ndir, dir, tag, |
1519 | 0 | count, (int16_t *)conv); |
1520 | 0 | } |
1521 | 0 | else |
1522 | 0 | { |
1523 | 0 | for (i = 0; i < count; ++i) |
1524 | 0 | ((int32_t *)conv)[i] = TIFFClampDoubleToInt32(value[i]); |
1525 | 0 | ok = TIFFWriteDirectoryTagSlongArray(tif, ndir, dir, tag, count, |
1526 | 0 | (int32_t *)conv); |
1527 | 0 | } |
1528 | 0 | break; |
1529 | 0 | case SAMPLEFORMAT_UINT: |
1530 | 0 | if (tif->tif_dir.td_bitspersample <= 8) |
1531 | 0 | { |
1532 | 0 | for (i = 0; i < count; ++i) |
1533 | 0 | ((uint8_t *)conv)[i] = TIFFClampDoubleToUInt8(value[i]); |
1534 | 0 | ok = TIFFWriteDirectoryTagByteArray(tif, ndir, dir, tag, count, |
1535 | 0 | (uint8_t *)conv); |
1536 | 0 | } |
1537 | 0 | else if (tif->tif_dir.td_bitspersample <= 16) |
1538 | 0 | { |
1539 | 0 | for (i = 0; i < count; ++i) |
1540 | 0 | ((uint16_t *)conv)[i] = TIFFClampDoubleToUInt16(value[i]); |
1541 | 0 | ok = TIFFWriteDirectoryTagShortArray(tif, ndir, dir, tag, count, |
1542 | 0 | (uint16_t *)conv); |
1543 | 0 | } |
1544 | 0 | else |
1545 | 0 | { |
1546 | 0 | for (i = 0; i < count; ++i) |
1547 | 0 | ((uint32_t *)conv)[i] = TIFFClampDoubleToUInt32(value[i]); |
1548 | 0 | ok = TIFFWriteDirectoryTagLongArray(tif, ndir, dir, tag, count, |
1549 | 0 | (uint32_t *)conv); |
1550 | 0 | } |
1551 | 0 | break; |
1552 | 0 | default: |
1553 | 0 | ok = 0; |
1554 | 0 | } |
1555 | | |
1556 | 0 | _TIFFfreeExt(tif, conv); |
1557 | 0 | return (ok); |
1558 | 0 | } |
1559 | | |
1560 | | static int TIFFWriteDirectoryTagAscii(TIFF *tif, uint32_t *ndir, |
1561 | | TIFFDirEntry *dir, uint16_t tag, |
1562 | | uint32_t count, char *value) |
1563 | 0 | { |
1564 | 0 | return ( |
1565 | 0 | TIFFWriteDirectoryTagCheckedAscii(tif, ndir, dir, tag, count, value)); |
1566 | 0 | } |
1567 | | |
1568 | | static int TIFFWriteDirectoryTagUndefinedArray(TIFF *tif, uint32_t *ndir, |
1569 | | TIFFDirEntry *dir, uint16_t tag, |
1570 | | uint32_t count, uint8_t *value) |
1571 | 0 | { |
1572 | 0 | return (TIFFWriteDirectoryTagCheckedUndefinedArray(tif, ndir, dir, tag, |
1573 | 0 | count, value)); |
1574 | 0 | } |
1575 | | |
1576 | | static int TIFFWriteDirectoryTagByteArray(TIFF *tif, uint32_t *ndir, |
1577 | | TIFFDirEntry *dir, uint16_t tag, |
1578 | | uint32_t count, uint8_t *value) |
1579 | 0 | { |
1580 | 0 | return (TIFFWriteDirectoryTagCheckedByteArray(tif, ndir, dir, tag, count, |
1581 | 0 | value)); |
1582 | 0 | } |
1583 | | |
1584 | | static int TIFFWriteDirectoryTagSbyteArray(TIFF *tif, uint32_t *ndir, |
1585 | | TIFFDirEntry *dir, uint16_t tag, |
1586 | | uint32_t count, int8_t *value) |
1587 | 0 | { |
1588 | 0 | return (TIFFWriteDirectoryTagCheckedSbyteArray(tif, ndir, dir, tag, count, |
1589 | 0 | value)); |
1590 | 0 | } |
1591 | | |
1592 | | static int TIFFWriteDirectoryTagShort(TIFF *tif, uint32_t *ndir, |
1593 | | TIFFDirEntry *dir, uint16_t tag, |
1594 | | uint16_t value) |
1595 | 0 | { |
1596 | 0 | return (TIFFWriteDirectoryTagCheckedShort(tif, ndir, dir, tag, value)); |
1597 | 0 | } |
1598 | | |
1599 | | static int TIFFWriteDirectoryTagShortArray(TIFF *tif, uint32_t *ndir, |
1600 | | TIFFDirEntry *dir, uint16_t tag, |
1601 | | uint32_t count, uint16_t *value) |
1602 | 0 | { |
1603 | 0 | return (TIFFWriteDirectoryTagCheckedShortArray(tif, ndir, dir, tag, count, |
1604 | 0 | value)); |
1605 | 0 | } |
1606 | | |
1607 | | static int TIFFWriteDirectoryTagShortPerSample(TIFF *tif, uint32_t *ndir, |
1608 | | TIFFDirEntry *dir, uint16_t tag, |
1609 | | uint16_t value) |
1610 | 0 | { |
1611 | 0 | static const char module[] = "TIFFWriteDirectoryTagShortPerSample"; |
1612 | 0 | uint16_t *m; |
1613 | 0 | uint16_t *na; |
1614 | 0 | uint16_t nb; |
1615 | 0 | int o; |
1616 | 0 | if (dir == NULL) |
1617 | 0 | { |
1618 | | /* only evaluate IFD data size and inc. ndir */ |
1619 | 0 | return (TIFFWriteDirectoryTagCheckedShortArray( |
1620 | 0 | tif, ndir, dir, tag, tif->tif_dir.td_samplesperpixel, NULL)); |
1621 | 0 | } |
1622 | 0 | m = (uint16_t *)_TIFFmallocExt(tif, tif->tif_dir.td_samplesperpixel * sizeof(uint16_t)); |
1623 | 0 | if (m == NULL) |
1624 | 0 | { |
1625 | 0 | TIFFErrorExtR(tif, module, "Out of memory"); |
1626 | 0 | return (0); |
1627 | 0 | } |
1628 | 0 | for (na = m, nb = 0; nb < tif->tif_dir.td_samplesperpixel; na++, nb++) |
1629 | 0 | *na = value; |
1630 | 0 | o = TIFFWriteDirectoryTagCheckedShortArray( |
1631 | 0 | tif, ndir, dir, tag, tif->tif_dir.td_samplesperpixel, m); |
1632 | 0 | _TIFFfreeExt(tif, m); |
1633 | 0 | return (o); |
1634 | 0 | } |
1635 | | |
1636 | | static int TIFFWriteDirectoryTagSshortArray(TIFF *tif, uint32_t *ndir, |
1637 | | TIFFDirEntry *dir, uint16_t tag, |
1638 | | uint32_t count, int16_t *value) |
1639 | 0 | { |
1640 | 0 | return (TIFFWriteDirectoryTagCheckedSshortArray(tif, ndir, dir, tag, count, |
1641 | 0 | value)); |
1642 | 0 | } |
1643 | | |
1644 | | static int TIFFWriteDirectoryTagLong(TIFF *tif, uint32_t *ndir, |
1645 | | TIFFDirEntry *dir, uint16_t tag, |
1646 | | uint32_t value) |
1647 | 0 | { |
1648 | 0 | return (TIFFWriteDirectoryTagCheckedLong(tif, ndir, dir, tag, value)); |
1649 | 0 | } |
1650 | | |
1651 | | static int TIFFWriteDirectoryTagLongArray(TIFF *tif, uint32_t *ndir, |
1652 | | TIFFDirEntry *dir, uint16_t tag, |
1653 | | uint32_t count, uint32_t *value) |
1654 | 0 | { |
1655 | 0 | return (TIFFWriteDirectoryTagCheckedLongArray(tif, ndir, dir, tag, count, |
1656 | 0 | value)); |
1657 | 0 | } |
1658 | | |
1659 | | static int TIFFWriteDirectoryTagSlongArray(TIFF *tif, uint32_t *ndir, |
1660 | | TIFFDirEntry *dir, uint16_t tag, |
1661 | | uint32_t count, int32_t *value) |
1662 | 0 | { |
1663 | 0 | return (TIFFWriteDirectoryTagCheckedSlongArray(tif, ndir, dir, tag, count, |
1664 | 0 | value)); |
1665 | 0 | } |
1666 | | |
1667 | | /************************************************************************/ |
1668 | | /* TIFFWriteDirectoryTagLong8Array() */ |
1669 | | /* */ |
1670 | | /* Write either Long8 or Long array depending on file type. */ |
1671 | | /************************************************************************/ |
1672 | | static int TIFFWriteDirectoryTagLong8Array(TIFF *tif, uint32_t *ndir, |
1673 | | TIFFDirEntry *dir, uint16_t tag, |
1674 | | uint32_t count, uint64_t *value) |
1675 | 0 | { |
1676 | 0 | static const char module[] = "TIFFWriteDirectoryTagLong8Array"; |
1677 | 0 | uint64_t *ma; |
1678 | 0 | uint32_t mb; |
1679 | 0 | uint32_t *p; |
1680 | 0 | uint32_t *q; |
1681 | 0 | int o; |
1682 | | |
1683 | | /* is this just a counting pass? */ |
1684 | 0 | if (dir == NULL) |
1685 | 0 | { |
1686 | | /* only evaluate IFD data size and inc. ndir */ |
1687 | 0 | return (TIFFWriteDirectoryTagCheckedLong8Array(tif, ndir, dir, tag, |
1688 | 0 | count, value)); |
1689 | 0 | } |
1690 | | |
1691 | | /* We always write Long8 for BigTIFF, no checking needed. */ |
1692 | 0 | if (tif->tif_flags & TIFF_BIGTIFF) |
1693 | 0 | return (TIFFWriteDirectoryTagCheckedLong8Array(tif, ndir, dir, tag, |
1694 | 0 | count, value)); |
1695 | | |
1696 | | /* |
1697 | | ** For classic tiff we want to verify everything is in range for long |
1698 | | ** and convert to long format. |
1699 | | */ |
1700 | 0 | p = (uint32_t *)_TIFFmallocExt(tif, count * sizeof(uint32_t)); |
1701 | 0 | if (p == NULL) |
1702 | 0 | { |
1703 | 0 | TIFFErrorExtR(tif, module, "Out of memory"); |
1704 | 0 | return (0); |
1705 | 0 | } |
1706 | | |
1707 | 0 | for (q = p, ma = value, mb = 0; mb < count; ma++, mb++, q++) |
1708 | 0 | { |
1709 | 0 | if (*ma > 0xFFFFFFFF) |
1710 | 0 | { |
1711 | 0 | TIFFErrorExtR(tif, module, |
1712 | 0 | "Attempt to write unsigned long value %" PRIu64 |
1713 | 0 | " larger than 0xFFFFFFFF for tag %d in Classic TIFF " |
1714 | 0 | "file. TIFF file writing aborted", |
1715 | 0 | *ma, tag); |
1716 | 0 | _TIFFfreeExt(tif, p); |
1717 | 0 | return (0); |
1718 | 0 | } |
1719 | 0 | *q = (uint32_t)(*ma); |
1720 | 0 | } |
1721 | | |
1722 | 0 | o = TIFFWriteDirectoryTagCheckedLongArray(tif, ndir, dir, tag, count, p); |
1723 | 0 | _TIFFfreeExt(tif, p); |
1724 | |
|
1725 | 0 | return (o); |
1726 | 0 | } |
1727 | | |
1728 | | /************************************************************************/ |
1729 | | /* TIFFWriteDirectoryTagSlong8Array() */ |
1730 | | /* */ |
1731 | | /* Write either SLong8 or SLong array depending on file type. */ |
1732 | | /************************************************************************/ |
1733 | | static int TIFFWriteDirectoryTagSlong8Array(TIFF *tif, uint32_t *ndir, |
1734 | | TIFFDirEntry *dir, uint16_t tag, |
1735 | | uint32_t count, int64_t *value) |
1736 | 0 | { |
1737 | 0 | static const char module[] = "TIFFWriteDirectoryTagSlong8Array"; |
1738 | 0 | int64_t *ma; |
1739 | 0 | uint32_t mb; |
1740 | 0 | int32_t *p; |
1741 | 0 | int32_t *q; |
1742 | 0 | int o; |
1743 | | |
1744 | | /* is this just a counting pass? */ |
1745 | 0 | if (dir == NULL) |
1746 | 0 | { |
1747 | | /* only evaluate IFD data size and inc. ndir */ |
1748 | 0 | return (TIFFWriteDirectoryTagCheckedSlong8Array(tif, ndir, dir, tag, |
1749 | 0 | count, value)); |
1750 | 0 | } |
1751 | | /* We always write SLong8 for BigTIFF, no checking needed. */ |
1752 | 0 | if (tif->tif_flags & TIFF_BIGTIFF) |
1753 | 0 | return (TIFFWriteDirectoryTagCheckedSlong8Array(tif, ndir, dir, tag, |
1754 | 0 | count, value)); |
1755 | | |
1756 | | /* |
1757 | | ** For classic tiff we want to verify everything is in range for signed-long |
1758 | | ** and convert to signed-long format. |
1759 | | */ |
1760 | 0 | p = (int32_t *)_TIFFmallocExt(tif, count * sizeof(uint32_t)); |
1761 | 0 | if (p == NULL) |
1762 | 0 | { |
1763 | 0 | TIFFErrorExtR(tif, module, "Out of memory"); |
1764 | 0 | return (0); |
1765 | 0 | } |
1766 | | |
1767 | 0 | for (q = p, ma = value, mb = 0; mb < count; ma++, mb++, q++) |
1768 | 0 | { |
1769 | 0 | if (*ma > (2147483647)) |
1770 | 0 | { |
1771 | 0 | TIFFErrorExtR(tif, module, |
1772 | 0 | "Attempt to write signed long value %" PRIi64 |
1773 | 0 | " larger than 0x7FFFFFFF (2147483647) for tag %d in " |
1774 | 0 | "Classic TIFF file. TIFF writing to file aborted", |
1775 | 0 | *ma, tag); |
1776 | 0 | _TIFFfreeExt(tif, p); |
1777 | 0 | return (0); |
1778 | 0 | } |
1779 | 0 | else if (*ma < (-2147483647 - 1)) |
1780 | 0 | { |
1781 | 0 | TIFFErrorExtR(tif, module, |
1782 | 0 | "Attempt to write signed long value %" PRIi64 |
1783 | 0 | " smaller than 0x80000000 (-2147483648) for tag %d " |
1784 | 0 | "in Classic TIFF file. TIFF writing to file aborted", |
1785 | 0 | *ma, tag); |
1786 | 0 | _TIFFfreeExt(tif, p); |
1787 | 0 | return (0); |
1788 | 0 | } |
1789 | 0 | *q = (int32_t)(*ma); |
1790 | 0 | } |
1791 | | |
1792 | 0 | o = TIFFWriteDirectoryTagCheckedSlongArray(tif, ndir, dir, tag, count, p); |
1793 | 0 | _TIFFfreeExt(tif, p); |
1794 | |
|
1795 | 0 | return (o); |
1796 | 0 | } |
1797 | | |
1798 | | static int TIFFWriteDirectoryTagRational(TIFF *tif, uint32_t *ndir, |
1799 | | TIFFDirEntry *dir, uint16_t tag, |
1800 | | double value) |
1801 | 0 | { |
1802 | 0 | return (TIFFWriteDirectoryTagCheckedRational(tif, ndir, dir, tag, value)); |
1803 | 0 | } |
1804 | | |
1805 | | static int TIFFWriteDirectoryTagRationalArray(TIFF *tif, uint32_t *ndir, |
1806 | | TIFFDirEntry *dir, uint16_t tag, |
1807 | | uint32_t count, float *value) |
1808 | 0 | { |
1809 | 0 | return (TIFFWriteDirectoryTagCheckedRationalArray(tif, ndir, dir, tag, |
1810 | 0 | count, value)); |
1811 | 0 | } |
1812 | | |
1813 | | static int TIFFWriteDirectoryTagSrationalArray(TIFF *tif, uint32_t *ndir, |
1814 | | TIFFDirEntry *dir, uint16_t tag, |
1815 | | uint32_t count, float *value) |
1816 | 0 | { |
1817 | 0 | return (TIFFWriteDirectoryTagCheckedSrationalArray(tif, ndir, dir, tag, |
1818 | 0 | count, value)); |
1819 | 0 | } |
1820 | | |
1821 | | /*-- Rational2Double: additional write functions */ |
1822 | | static int TIFFWriteDirectoryTagRationalDoubleArray(TIFF *tif, uint32_t *ndir, |
1823 | | TIFFDirEntry *dir, |
1824 | | uint16_t tag, |
1825 | | uint32_t count, |
1826 | | double *value) |
1827 | 0 | { |
1828 | 0 | return (TIFFWriteDirectoryTagCheckedRationalDoubleArray(tif, ndir, dir, tag, |
1829 | 0 | count, value)); |
1830 | 0 | } |
1831 | | |
1832 | | static int TIFFWriteDirectoryTagSrationalDoubleArray(TIFF *tif, uint32_t *ndir, |
1833 | | TIFFDirEntry *dir, |
1834 | | uint16_t tag, |
1835 | | uint32_t count, |
1836 | | double *value) |
1837 | 0 | { |
1838 | 0 | return (TIFFWriteDirectoryTagCheckedSrationalDoubleArray( |
1839 | 0 | tif, ndir, dir, tag, count, value)); |
1840 | 0 | } |
1841 | | |
1842 | | static int TIFFWriteDirectoryTagFloatArray(TIFF *tif, uint32_t *ndir, |
1843 | | TIFFDirEntry *dir, uint16_t tag, |
1844 | | uint32_t count, float *value) |
1845 | 0 | { |
1846 | 0 | return (TIFFWriteDirectoryTagCheckedFloatArray(tif, ndir, dir, tag, count, |
1847 | 0 | value)); |
1848 | 0 | } |
1849 | | |
1850 | | static int TIFFWriteDirectoryTagDoubleArray(TIFF *tif, uint32_t *ndir, |
1851 | | TIFFDirEntry *dir, uint16_t tag, |
1852 | | uint32_t count, double *value) |
1853 | 0 | { |
1854 | 0 | return (TIFFWriteDirectoryTagCheckedDoubleArray(tif, ndir, dir, tag, count, |
1855 | 0 | value)); |
1856 | 0 | } |
1857 | | |
1858 | | static int TIFFWriteDirectoryTagIfdArray(TIFF *tif, uint32_t *ndir, |
1859 | | TIFFDirEntry *dir, uint16_t tag, |
1860 | | uint32_t count, uint32_t *value) |
1861 | 0 | { |
1862 | 0 | return (TIFFWriteDirectoryTagCheckedIfdArray(tif, ndir, dir, tag, count, |
1863 | 0 | value)); |
1864 | 0 | } |
1865 | | |
1866 | | static int TIFFWriteDirectoryTagShortLong(TIFF *tif, uint32_t *ndir, |
1867 | | TIFFDirEntry *dir, uint16_t tag, |
1868 | | uint32_t value) |
1869 | 0 | { |
1870 | 0 | if (value <= 0xFFFF) |
1871 | 0 | return (TIFFWriteDirectoryTagCheckedShort(tif, ndir, dir, tag, |
1872 | 0 | (uint16_t)value)); |
1873 | 0 | else |
1874 | 0 | return (TIFFWriteDirectoryTagCheckedLong(tif, ndir, dir, tag, value)); |
1875 | 0 | } |
1876 | | |
1877 | | static int _WriteAsType(TIFF *tif, uint64_t strile_size, |
1878 | | uint64_t uncompressed_threshold) |
1879 | 0 | { |
1880 | 0 | const uint16_t compression = tif->tif_dir.td_compression; |
1881 | 0 | if (compression == COMPRESSION_NONE) |
1882 | 0 | { |
1883 | 0 | return strile_size > uncompressed_threshold; |
1884 | 0 | } |
1885 | 0 | else if (compression == COMPRESSION_JPEG || |
1886 | 0 | compression == COMPRESSION_LZW || |
1887 | 0 | compression == COMPRESSION_ADOBE_DEFLATE || |
1888 | 0 | compression == COMPRESSION_DEFLATE || |
1889 | 0 | compression == COMPRESSION_LZMA || |
1890 | 0 | compression == COMPRESSION_LERC || |
1891 | 0 | compression == COMPRESSION_ZSTD || |
1892 | 0 | compression == COMPRESSION_WEBP || compression == COMPRESSION_JXL) |
1893 | 0 | { |
1894 | | /* For a few select compression types, we assume that in the worst */ |
1895 | | /* case the compressed size will be 10 times the uncompressed size. */ |
1896 | | /* This is overly pessismistic ! */ |
1897 | 0 | return strile_size >= uncompressed_threshold / 10; |
1898 | 0 | } |
1899 | 0 | return 1; |
1900 | 0 | } |
1901 | | |
1902 | | static int WriteAsLong8(TIFF *tif, uint64_t strile_size) |
1903 | 0 | { |
1904 | 0 | return _WriteAsType(tif, strile_size, 0xFFFFFFFFU); |
1905 | 0 | } |
1906 | | |
1907 | | static int WriteAsLong4(TIFF *tif, uint64_t strile_size) |
1908 | 0 | { |
1909 | 0 | return _WriteAsType(tif, strile_size, 0xFFFFU); |
1910 | 0 | } |
1911 | | |
1912 | | /************************************************************************/ |
1913 | | /* TIFFWriteDirectoryTagLongLong8Array() */ |
1914 | | /* */ |
1915 | | /* Write out LONG8 array and write a SHORT/LONG/LONG8 depending */ |
1916 | | /* on strile size and Classic/BigTIFF mode. */ |
1917 | | /************************************************************************/ |
1918 | | |
1919 | | static int TIFFWriteDirectoryTagLongLong8Array(TIFF *tif, uint32_t *ndir, |
1920 | | TIFFDirEntry *dir, uint16_t tag, |
1921 | | uint32_t count, uint64_t *value) |
1922 | 0 | { |
1923 | 0 | static const char module[] = "TIFFWriteDirectoryTagLongLong8Array"; |
1924 | 0 | int o; |
1925 | 0 | int write_aslong4; |
1926 | |
|
1927 | 0 | if (tif->tif_dir.td_deferstrilearraywriting) |
1928 | 0 | { |
1929 | 0 | if (dir == NULL) |
1930 | 0 | { |
1931 | | /* This is just a counting pass to count IFD entries. |
1932 | | * For deferstrilearraywriting no extra bytes will be written |
1933 | | * into IFD space. */ |
1934 | 0 | (*ndir)++; |
1935 | 0 | return 1; |
1936 | 0 | } |
1937 | 0 | return TIFFWriteDirectoryTagData(tif, ndir, dir, tag, TIFF_NOTYPE, 0, 0, |
1938 | 0 | NULL); |
1939 | 0 | } |
1940 | | |
1941 | 0 | if (tif->tif_flags & TIFF_BIGTIFF) |
1942 | 0 | { |
1943 | 0 | int write_aslong8 = 1; |
1944 | | /* In the case of ByteCounts array, we may be able to write them on LONG |
1945 | | * if the strip/tilesize is not too big. Also do that for count > 1 in |
1946 | | * the case someone would want to create a single-strip file with a |
1947 | | * growing height, in which case using LONG8 will be safer. */ |
1948 | 0 | if (count > 1 && tag == TIFFTAG_STRIPBYTECOUNTS) |
1949 | 0 | { |
1950 | 0 | write_aslong8 = WriteAsLong8(tif, TIFFStripSize64(tif)); |
1951 | 0 | } |
1952 | 0 | else if (count > 1 && tag == TIFFTAG_TILEBYTECOUNTS) |
1953 | 0 | { |
1954 | 0 | write_aslong8 = WriteAsLong8(tif, TIFFTileSize64(tif)); |
1955 | 0 | } |
1956 | 0 | if (write_aslong8) |
1957 | 0 | { |
1958 | 0 | return TIFFWriteDirectoryTagCheckedLong8Array(tif, ndir, dir, tag, |
1959 | 0 | count, value); |
1960 | 0 | } |
1961 | 0 | } |
1962 | | |
1963 | 0 | write_aslong4 = 1; |
1964 | 0 | if (count > 1 && tag == TIFFTAG_STRIPBYTECOUNTS) |
1965 | 0 | { |
1966 | 0 | write_aslong4 = WriteAsLong4(tif, TIFFStripSize64(tif)); |
1967 | 0 | } |
1968 | 0 | else if (count > 1 && tag == TIFFTAG_TILEBYTECOUNTS) |
1969 | 0 | { |
1970 | 0 | write_aslong4 = WriteAsLong4(tif, TIFFTileSize64(tif)); |
1971 | 0 | } |
1972 | 0 | if (write_aslong4) |
1973 | 0 | { |
1974 | | /* |
1975 | | ** For classic tiff we want to verify everything is in range for LONG |
1976 | | ** and convert to long format. |
1977 | | */ |
1978 | |
|
1979 | 0 | uint32_t *p = (uint32_t *)_TIFFmallocExt(tif, count * sizeof(uint32_t)); |
1980 | 0 | uint32_t *q; |
1981 | 0 | uint64_t *ma; |
1982 | 0 | uint32_t mb; |
1983 | |
|
1984 | 0 | if (p == NULL) |
1985 | 0 | { |
1986 | 0 | TIFFErrorExtR(tif, module, "Out of memory"); |
1987 | 0 | return (0); |
1988 | 0 | } |
1989 | | |
1990 | 0 | for (q = p, ma = value, mb = 0; mb < count; ma++, mb++, q++) |
1991 | 0 | { |
1992 | 0 | if (*ma > 0xFFFFFFFF) |
1993 | 0 | { |
1994 | 0 | TIFFErrorExtR(tif, module, |
1995 | 0 | "Attempt to write value larger than 0xFFFFFFFF " |
1996 | 0 | "in LONG array."); |
1997 | 0 | _TIFFfreeExt(tif, p); |
1998 | 0 | return (0); |
1999 | 0 | } |
2000 | 0 | *q = (uint32_t)(*ma); |
2001 | 0 | } |
2002 | | |
2003 | 0 | o = TIFFWriteDirectoryTagCheckedLongArray(tif, ndir, dir, tag, count, |
2004 | 0 | p); |
2005 | 0 | _TIFFfreeExt(tif, p); |
2006 | 0 | } |
2007 | 0 | else |
2008 | 0 | { |
2009 | 0 | uint16_t *p = (uint16_t *)_TIFFmallocExt(tif, count * sizeof(uint16_t)); |
2010 | 0 | uint16_t *q; |
2011 | 0 | uint64_t *ma; |
2012 | 0 | uint32_t mb; |
2013 | |
|
2014 | 0 | if (p == NULL) |
2015 | 0 | { |
2016 | 0 | TIFFErrorExtR(tif, module, "Out of memory"); |
2017 | 0 | return (0); |
2018 | 0 | } |
2019 | | |
2020 | 0 | for (q = p, ma = value, mb = 0; mb < count; ma++, mb++, q++) |
2021 | 0 | { |
2022 | 0 | if (*ma > 0xFFFF) |
2023 | 0 | { |
2024 | | /* Should not happen normally given the check we did before */ |
2025 | 0 | TIFFErrorExtR(tif, module, |
2026 | 0 | "Attempt to write value larger than 0xFFFF in " |
2027 | 0 | "SHORT array."); |
2028 | 0 | _TIFFfreeExt(tif, p); |
2029 | 0 | return (0); |
2030 | 0 | } |
2031 | 0 | *q = (uint16_t)(*ma); |
2032 | 0 | } |
2033 | | |
2034 | 0 | o = TIFFWriteDirectoryTagCheckedShortArray(tif, ndir, dir, tag, count, |
2035 | 0 | p); |
2036 | 0 | _TIFFfreeExt(tif, p); |
2037 | 0 | } |
2038 | | |
2039 | 0 | return (o); |
2040 | 0 | } |
2041 | | |
2042 | | /************************************************************************/ |
2043 | | /* TIFFWriteDirectoryTagIfdIfd8Array() */ |
2044 | | /* */ |
2045 | | /* Write either IFD8 or IFD array depending on file type. */ |
2046 | | /************************************************************************/ |
2047 | | |
2048 | | static int TIFFWriteDirectoryTagIfdIfd8Array(TIFF *tif, uint32_t *ndir, |
2049 | | TIFFDirEntry *dir, uint16_t tag, |
2050 | | uint32_t count, uint64_t *value) |
2051 | 0 | { |
2052 | 0 | static const char module[] = "TIFFWriteDirectoryTagIfdIfd8Array"; |
2053 | 0 | uint64_t *ma; |
2054 | 0 | uint32_t mb; |
2055 | 0 | uint32_t *p; |
2056 | 0 | uint32_t *q; |
2057 | 0 | int o; |
2058 | | |
2059 | | /* We always write IFD8 for BigTIFF, no checking needed. */ |
2060 | 0 | if (tif->tif_flags & TIFF_BIGTIFF) |
2061 | 0 | return TIFFWriteDirectoryTagCheckedIfd8Array(tif, ndir, dir, tag, count, |
2062 | 0 | value); |
2063 | | |
2064 | | /* |
2065 | | ** For classic tiff we want to verify everything is in range for IFD |
2066 | | ** and convert to long format. |
2067 | | */ |
2068 | | |
2069 | 0 | p = (uint32_t *)_TIFFmallocExt(tif, count * sizeof(uint32_t)); |
2070 | 0 | if (p == NULL) |
2071 | 0 | { |
2072 | 0 | TIFFErrorExtR(tif, module, "Out of memory"); |
2073 | 0 | return (0); |
2074 | 0 | } |
2075 | | |
2076 | 0 | for (q = p, ma = value, mb = 0; mb < count; ma++, mb++, q++) |
2077 | 0 | { |
2078 | 0 | if (*ma > 0xFFFFFFFF) |
2079 | 0 | { |
2080 | 0 | TIFFErrorExtR(tif, module, |
2081 | 0 | "Attempt to write value larger than 0xFFFFFFFF in " |
2082 | 0 | "Classic TIFF file."); |
2083 | 0 | _TIFFfreeExt(tif, p); |
2084 | 0 | return (0); |
2085 | 0 | } |
2086 | 0 | *q = (uint32_t)(*ma); |
2087 | 0 | } |
2088 | | |
2089 | 0 | o = TIFFWriteDirectoryTagCheckedIfdArray(tif, ndir, dir, tag, count, p); |
2090 | 0 | _TIFFfreeExt(tif, p); |
2091 | |
|
2092 | 0 | return (o); |
2093 | 0 | } |
2094 | | |
2095 | | /* |
2096 | | * Auxiliary function to determine the IFD data size to be written to the file. |
2097 | | * The IFD data size is finally the size of the IFD tag entries plus the IFD |
2098 | | * data that is written directly after the IFD tag entries. |
2099 | | */ |
2100 | | static void EvaluateIFDdatasizeWrite(TIFF *tif, uint32_t count, |
2101 | | uint32_t typesize, uint32_t *ndir) |
2102 | 0 | { |
2103 | 0 | uint64_t datalength = (uint64_t)count * typesize; |
2104 | 0 | if (datalength > ((tif->tif_flags & TIFF_BIGTIFF) ? 0x8U : 0x4U)) |
2105 | 0 | { |
2106 | | /* LibTIFF increments write address to an even offset, thus datalength |
2107 | | * written is also incremented. */ |
2108 | 0 | if (datalength & 1) |
2109 | 0 | datalength++; |
2110 | 0 | tif->tif_dir.td_dirdatasize_write += datalength; |
2111 | 0 | } |
2112 | 0 | (*ndir)++; |
2113 | 0 | } |
2114 | | |
2115 | | static int TIFFWriteDirectoryTagColormap(TIFF *tif, uint32_t *ndir, |
2116 | | TIFFDirEntry *dir) |
2117 | 0 | { |
2118 | 0 | static const char module[] = "TIFFWriteDirectoryTagColormap"; |
2119 | 0 | uint32_t m; |
2120 | 0 | uint16_t *n; |
2121 | 0 | int o; |
2122 | 0 | m = (1 << tif->tif_dir.td_bitspersample); |
2123 | 0 | if (dir == NULL) /* Just evaluate IFD data size and increment ndir. */ |
2124 | 0 | { |
2125 | 0 | EvaluateIFDdatasizeWrite(tif, 3 * m, sizeof(uint16_t), ndir); |
2126 | 0 | return 1; |
2127 | 0 | } |
2128 | | |
2129 | 0 | n = (uint16_t *)_TIFFmallocExt(tif, 3 * m * sizeof(uint16_t)); |
2130 | 0 | if (n == NULL) |
2131 | 0 | { |
2132 | 0 | TIFFErrorExtR(tif, module, "Out of memory"); |
2133 | 0 | return (0); |
2134 | 0 | } |
2135 | 0 | _TIFFmemcpy(&n[0], tif->tif_dir.td_colormap[0], m * sizeof(uint16_t)); |
2136 | 0 | _TIFFmemcpy(&n[m], tif->tif_dir.td_colormap[1], m * sizeof(uint16_t)); |
2137 | 0 | _TIFFmemcpy(&n[2 * m], tif->tif_dir.td_colormap[2], m * sizeof(uint16_t)); |
2138 | 0 | o = TIFFWriteDirectoryTagCheckedShortArray(tif, ndir, dir, TIFFTAG_COLORMAP, |
2139 | 0 | 3 * m, n); |
2140 | 0 | _TIFFfreeExt(tif, n); |
2141 | 0 | return (o); |
2142 | 0 | } |
2143 | | |
2144 | | static int TIFFWriteDirectoryTagTransferfunction(TIFF *tif, uint32_t *ndir, |
2145 | | TIFFDirEntry *dir) |
2146 | 0 | { |
2147 | 0 | static const char module[] = "TIFFWriteDirectoryTagTransferfunction"; |
2148 | 0 | uint32_t m; |
2149 | 0 | uint16_t n; |
2150 | 0 | uint16_t *o; |
2151 | 0 | int p; |
2152 | | /* TIFFTAG_TRANSFERFUNCTION expects (1 or 3) pointer to arrays with |
2153 | | * (1 << BitsPerSample) * uint16_t values. |
2154 | | */ |
2155 | 0 | m = (1 << tif->tif_dir.td_bitspersample); |
2156 | | /* clang-format off */ |
2157 | 0 | n = (tif->tif_dir.td_samplesperpixel - tif->tif_dir.td_extrasamples) > 1 ? 3 : 1; |
2158 | | /* clang-format on */ |
2159 | | |
2160 | | /* Check for proper number of transferfunctions */ |
2161 | 0 | for (int i = 0; i < n; i++) |
2162 | 0 | { |
2163 | 0 | if (tif->tif_dir.td_transferfunction[i] == NULL) |
2164 | 0 | { |
2165 | 0 | TIFFWarningExtR(tif, module, |
2166 | 0 | "Too few TransferFunctions provided. Tag " |
2167 | 0 | "not written to file"); |
2168 | 0 | return (1); /* Not an error; only tag is not written. */ |
2169 | 0 | } |
2170 | 0 | } |
2171 | | /* |
2172 | | * Check if the table can be written as a single column, |
2173 | | * or if it must be written as 3 columns. Note that we |
2174 | | * write a 3-column tag if there are 2 samples/pixel and |
2175 | | * a single column of data won't suffice--hmm. |
2176 | | */ |
2177 | 0 | if (n == 3) |
2178 | 0 | { |
2179 | 0 | if (!_TIFFmemcmp(tif->tif_dir.td_transferfunction[0], |
2180 | 0 | tif->tif_dir.td_transferfunction[2], |
2181 | 0 | m * sizeof(uint16_t)) && |
2182 | 0 | !_TIFFmemcmp(tif->tif_dir.td_transferfunction[0], |
2183 | 0 | tif->tif_dir.td_transferfunction[1], |
2184 | 0 | m * sizeof(uint16_t))) |
2185 | 0 | n = 1; |
2186 | 0 | } |
2187 | 0 | if (dir == NULL) /* Just evaluate IFD data size and increment ndir. */ |
2188 | 0 | { |
2189 | 0 | EvaluateIFDdatasizeWrite(tif, n * m, 2, ndir); |
2190 | 0 | return 1; |
2191 | 0 | } |
2192 | | |
2193 | 0 | o = (uint16_t *)_TIFFmallocExt(tif, n * m * sizeof(uint16_t)); |
2194 | 0 | if (o == NULL) |
2195 | 0 | { |
2196 | 0 | TIFFErrorExtR(tif, module, "Out of memory"); |
2197 | 0 | return (0); |
2198 | 0 | } |
2199 | 0 | _TIFFmemcpy(&o[0], tif->tif_dir.td_transferfunction[0], |
2200 | 0 | m * sizeof(uint16_t)); |
2201 | 0 | if (n > 1) |
2202 | 0 | _TIFFmemcpy(&o[m], tif->tif_dir.td_transferfunction[1], |
2203 | 0 | m * sizeof(uint16_t)); |
2204 | 0 | if (n > 2) |
2205 | 0 | _TIFFmemcpy(&o[2 * m], tif->tif_dir.td_transferfunction[2], |
2206 | 0 | m * sizeof(uint16_t)); |
2207 | 0 | p = TIFFWriteDirectoryTagCheckedShortArray( |
2208 | 0 | tif, ndir, dir, TIFFTAG_TRANSFERFUNCTION, n * m, o); |
2209 | 0 | _TIFFfreeExt(tif, o); |
2210 | 0 | return (p); |
2211 | 0 | } |
2212 | | |
2213 | | static int TIFFWriteDirectoryTagSubifd(TIFF *tif, uint32_t *ndir, |
2214 | | TIFFDirEntry *dir) |
2215 | 0 | { |
2216 | 0 | static const char module[] = "TIFFWriteDirectoryTagSubifd"; |
2217 | 0 | uint64_t m; |
2218 | 0 | int n; |
2219 | 0 | if (tif->tif_dir.td_nsubifd == 0) |
2220 | 0 | return (1); |
2221 | 0 | m = tif->tif_dataoff; |
2222 | 0 | if (!(tif->tif_flags & TIFF_BIGTIFF)) |
2223 | 0 | { |
2224 | 0 | uint32_t *o; |
2225 | 0 | uint64_t *pa; |
2226 | 0 | uint32_t *pb; |
2227 | 0 | uint16_t p; |
2228 | 0 | o = (uint32_t *)_TIFFmallocExt(tif, tif->tif_dir.td_nsubifd * sizeof(uint32_t)); |
2229 | 0 | if (o == NULL) |
2230 | 0 | { |
2231 | 0 | TIFFErrorExtR(tif, module, "Out of memory"); |
2232 | 0 | return (0); |
2233 | 0 | } |
2234 | 0 | pa = tif->tif_dir.td_subifd; |
2235 | 0 | pb = o; |
2236 | 0 | for (p = 0; p < tif->tif_dir.td_nsubifd; p++) |
2237 | 0 | { |
2238 | 0 | assert(pa != 0); |
2239 | | |
2240 | | /* Could happen if an classicTIFF has a SubIFD of type LONG8 (which |
2241 | | * is illegal) */ |
2242 | 0 | if (*pa > 0xFFFFFFFFUL) |
2243 | 0 | { |
2244 | 0 | TIFFErrorExtR(tif, module, "Illegal value for SubIFD tag"); |
2245 | 0 | _TIFFfreeExt(tif, o); |
2246 | 0 | return (0); |
2247 | 0 | } |
2248 | 0 | *pb++ = (uint32_t)(*pa++); |
2249 | 0 | } |
2250 | 0 | n = TIFFWriteDirectoryTagCheckedIfdArray(tif, ndir, dir, TIFFTAG_SUBIFD, |
2251 | 0 | tif->tif_dir.td_nsubifd, o); |
2252 | 0 | _TIFFfreeExt(tif, o); |
2253 | 0 | } |
2254 | 0 | else |
2255 | 0 | n = TIFFWriteDirectoryTagCheckedIfd8Array( |
2256 | 0 | tif, ndir, dir, TIFFTAG_SUBIFD, tif->tif_dir.td_nsubifd, |
2257 | 0 | tif->tif_dir.td_subifd); |
2258 | | |
2259 | 0 | if (dir == NULL) |
2260 | | /* Just have evaluated IFD data size and incremented ndir |
2261 | | * above in sub-functions. */ |
2262 | 0 | return (n); |
2263 | | |
2264 | 0 | if (!n) |
2265 | 0 | return (0); |
2266 | | /* |
2267 | | * Total hack: if this directory includes a SubIFD |
2268 | | * tag then force the next <n> directories to be |
2269 | | * written as ``sub directories'' of this one. This |
2270 | | * is used to write things like thumbnails and |
2271 | | * image masks that one wants to keep out of the |
2272 | | * normal directory linkage access mechanism. |
2273 | | */ |
2274 | 0 | tif->tif_flags |= TIFF_INSUBIFD; |
2275 | 0 | tif->tif_nsubifd = tif->tif_dir.td_nsubifd; |
2276 | 0 | if (tif->tif_dir.td_nsubifd == 1) |
2277 | 0 | tif->tif_subifdoff = 0; |
2278 | 0 | else |
2279 | 0 | tif->tif_subifdoff = m; |
2280 | 0 | return (1); |
2281 | 0 | } |
2282 | | |
2283 | | static int TIFFWriteDirectoryTagCheckedAscii(TIFF *tif, uint32_t *ndir, |
2284 | | TIFFDirEntry *dir, uint16_t tag, |
2285 | | uint32_t count, char *value) |
2286 | 0 | { |
2287 | 0 | assert(sizeof(char) == 1); |
2288 | 0 | if (dir == NULL) /* Just evaluate IFD data size and increment ndir. */ |
2289 | 0 | { |
2290 | 0 | EvaluateIFDdatasizeWrite(tif, count, 1, ndir); |
2291 | 0 | return 1; |
2292 | 0 | } |
2293 | 0 | return (TIFFWriteDirectoryTagData(tif, ndir, dir, tag, TIFF_ASCII, count, |
2294 | 0 | count, value)); |
2295 | 0 | } |
2296 | | |
2297 | | static int TIFFWriteDirectoryTagCheckedUndefinedArray(TIFF *tif, uint32_t *ndir, |
2298 | | TIFFDirEntry *dir, |
2299 | | uint16_t tag, |
2300 | | uint32_t count, |
2301 | | uint8_t *value) |
2302 | 0 | { |
2303 | 0 | assert(sizeof(uint8_t) == 1); |
2304 | 0 | if (dir == NULL) /* Just evaluate IFD data size and increment ndir. */ |
2305 | 0 | { |
2306 | 0 | EvaluateIFDdatasizeWrite(tif, count, 1, ndir); |
2307 | 0 | return 1; |
2308 | 0 | } |
2309 | 0 | return (TIFFWriteDirectoryTagData(tif, ndir, dir, tag, TIFF_UNDEFINED, |
2310 | 0 | count, count, value)); |
2311 | 0 | } |
2312 | | |
2313 | | static int TIFFWriteDirectoryTagCheckedByteArray(TIFF *tif, uint32_t *ndir, |
2314 | | TIFFDirEntry *dir, |
2315 | | uint16_t tag, uint32_t count, |
2316 | | uint8_t *value) |
2317 | 0 | { |
2318 | 0 | assert(sizeof(uint8_t) == 1); |
2319 | 0 | if (dir == NULL) /* Just evaluate IFD data size and increment ndir. */ |
2320 | 0 | { |
2321 | 0 | EvaluateIFDdatasizeWrite(tif, count, 1, ndir); |
2322 | 0 | return 1; |
2323 | 0 | } |
2324 | 0 | return (TIFFWriteDirectoryTagData(tif, ndir, dir, tag, TIFF_BYTE, count, |
2325 | 0 | count, value)); |
2326 | 0 | } |
2327 | | |
2328 | | static int TIFFWriteDirectoryTagCheckedSbyteArray(TIFF *tif, uint32_t *ndir, |
2329 | | TIFFDirEntry *dir, |
2330 | | uint16_t tag, uint32_t count, |
2331 | | int8_t *value) |
2332 | 0 | { |
2333 | 0 | assert(sizeof(int8_t) == 1); |
2334 | 0 | if (dir == NULL) /* Just evaluate IFD data size and increment ndir. */ |
2335 | 0 | { |
2336 | 0 | EvaluateIFDdatasizeWrite(tif, count, 1, ndir); |
2337 | 0 | return 1; |
2338 | 0 | } |
2339 | 0 | return (TIFFWriteDirectoryTagData(tif, ndir, dir, tag, TIFF_SBYTE, count, |
2340 | 0 | count, value)); |
2341 | 0 | } |
2342 | | |
2343 | | static int TIFFWriteDirectoryTagCheckedShort(TIFF *tif, uint32_t *ndir, |
2344 | | TIFFDirEntry *dir, uint16_t tag, |
2345 | | uint16_t value) |
2346 | 0 | { |
2347 | 0 | uint16_t m; |
2348 | 0 | assert(sizeof(uint16_t) == 2); |
2349 | 0 | if (dir == NULL) |
2350 | 0 | { |
2351 | | /* No additional data to IFD data size just increment ndir. */ |
2352 | 0 | (*ndir)++; |
2353 | 0 | return 1; |
2354 | 0 | } |
2355 | 0 | m = value; |
2356 | 0 | if (tif->tif_flags & TIFF_SWAB) |
2357 | 0 | TIFFSwabShort(&m); |
2358 | 0 | return ( |
2359 | 0 | TIFFWriteDirectoryTagData(tif, ndir, dir, tag, TIFF_SHORT, 1, 2, &m)); |
2360 | 0 | } |
2361 | | |
2362 | | static int TIFFWriteDirectoryTagCheckedShortArray(TIFF *tif, uint32_t *ndir, |
2363 | | TIFFDirEntry *dir, |
2364 | | uint16_t tag, uint32_t count, |
2365 | | uint16_t *value) |
2366 | 0 | { |
2367 | 0 | assert(count < 0x80000000); |
2368 | 0 | assert(sizeof(uint16_t) == 2); |
2369 | 0 | if (dir == NULL) /* Just evaluate IFD data size and increment ndir. */ |
2370 | 0 | { |
2371 | 0 | EvaluateIFDdatasizeWrite(tif, count, 2, ndir); |
2372 | 0 | return 1; |
2373 | 0 | } |
2374 | 0 | if (tif->tif_flags & TIFF_SWAB) |
2375 | 0 | TIFFSwabArrayOfShort(value, count); |
2376 | 0 | return (TIFFWriteDirectoryTagData(tif, ndir, dir, tag, TIFF_SHORT, count, |
2377 | 0 | count * 2, value)); |
2378 | 0 | } |
2379 | | |
2380 | | static int TIFFWriteDirectoryTagCheckedSshortArray(TIFF *tif, uint32_t *ndir, |
2381 | | TIFFDirEntry *dir, |
2382 | | uint16_t tag, uint32_t count, |
2383 | | int16_t *value) |
2384 | 0 | { |
2385 | 0 | assert(count < 0x80000000); |
2386 | 0 | assert(sizeof(int16_t) == 2); |
2387 | 0 | if (dir == NULL) /* Just evaluate IFD data size and increment ndir. */ |
2388 | 0 | { |
2389 | 0 | EvaluateIFDdatasizeWrite(tif, count, 2, ndir); |
2390 | 0 | return 1; |
2391 | 0 | } |
2392 | 0 | if (tif->tif_flags & TIFF_SWAB) |
2393 | 0 | TIFFSwabArrayOfShort((uint16_t *)value, count); |
2394 | 0 | return (TIFFWriteDirectoryTagData(tif, ndir, dir, tag, TIFF_SSHORT, count, |
2395 | 0 | count * 2, value)); |
2396 | 0 | } |
2397 | | |
2398 | | static int TIFFWriteDirectoryTagCheckedLong(TIFF *tif, uint32_t *ndir, |
2399 | | TIFFDirEntry *dir, uint16_t tag, |
2400 | | uint32_t value) |
2401 | 0 | { |
2402 | 0 | uint32_t m; |
2403 | 0 | assert(sizeof(uint32_t) == 4); |
2404 | 0 | if (dir == NULL) |
2405 | 0 | { |
2406 | | /* No additional data to IFD data size just increment ndir. */ |
2407 | 0 | (*ndir)++; |
2408 | 0 | return 1; |
2409 | 0 | } |
2410 | 0 | m = value; |
2411 | 0 | if (tif->tif_flags & TIFF_SWAB) |
2412 | 0 | TIFFSwabLong(&m); |
2413 | 0 | return ( |
2414 | 0 | TIFFWriteDirectoryTagData(tif, ndir, dir, tag, TIFF_LONG, 1, 4, &m)); |
2415 | 0 | } |
2416 | | |
2417 | | static int TIFFWriteDirectoryTagCheckedLongArray(TIFF *tif, uint32_t *ndir, |
2418 | | TIFFDirEntry *dir, |
2419 | | uint16_t tag, uint32_t count, |
2420 | | uint32_t *value) |
2421 | 0 | { |
2422 | 0 | assert(count < 0x40000000); |
2423 | 0 | assert(sizeof(uint32_t) == 4); |
2424 | 0 | if (dir == NULL) /* Just evaluate IFD data size and increment ndir. */ |
2425 | 0 | { |
2426 | 0 | EvaluateIFDdatasizeWrite(tif, count, 4, ndir); |
2427 | 0 | return 1; |
2428 | 0 | } |
2429 | 0 | if (tif->tif_flags & TIFF_SWAB) |
2430 | 0 | TIFFSwabArrayOfLong(value, count); |
2431 | 0 | return (TIFFWriteDirectoryTagData(tif, ndir, dir, tag, TIFF_LONG, count, |
2432 | 0 | count * 4, value)); |
2433 | 0 | } |
2434 | | |
2435 | | static int TIFFWriteDirectoryTagCheckedSlongArray(TIFF *tif, uint32_t *ndir, |
2436 | | TIFFDirEntry *dir, |
2437 | | uint16_t tag, uint32_t count, |
2438 | | int32_t *value) |
2439 | 0 | { |
2440 | 0 | assert(count < 0x40000000); |
2441 | 0 | assert(sizeof(int32_t) == 4); |
2442 | 0 | if (dir == NULL) /* Just evaluate IFD data size and increment ndir. */ |
2443 | 0 | { |
2444 | 0 | EvaluateIFDdatasizeWrite(tif, count, 4, ndir); |
2445 | 0 | return 1; |
2446 | 0 | } |
2447 | 0 | if (tif->tif_flags & TIFF_SWAB) |
2448 | 0 | TIFFSwabArrayOfLong((uint32_t *)value, count); |
2449 | 0 | return (TIFFWriteDirectoryTagData(tif, ndir, dir, tag, TIFF_SLONG, count, |
2450 | 0 | count * 4, value)); |
2451 | 0 | } |
2452 | | |
2453 | | static int TIFFWriteDirectoryTagCheckedLong8Array(TIFF *tif, uint32_t *ndir, |
2454 | | TIFFDirEntry *dir, |
2455 | | uint16_t tag, uint32_t count, |
2456 | | uint64_t *value) |
2457 | 0 | { |
2458 | 0 | assert(count < 0x20000000); |
2459 | 0 | assert(sizeof(uint64_t) == 8); |
2460 | 0 | if (!(tif->tif_flags & TIFF_BIGTIFF)) |
2461 | 0 | { |
2462 | 0 | TIFFErrorExtR(tif, "TIFFWriteDirectoryTagCheckedLong8Array", |
2463 | 0 | "LONG8 not allowed for ClassicTIFF"); |
2464 | 0 | return (0); |
2465 | 0 | } |
2466 | 0 | if (dir == NULL) /* Just evaluate IFD data size and increment ndir. */ |
2467 | 0 | { |
2468 | 0 | EvaluateIFDdatasizeWrite(tif, count, 8, ndir); |
2469 | 0 | return 1; |
2470 | 0 | } |
2471 | 0 | if (tif->tif_flags & TIFF_SWAB) |
2472 | 0 | TIFFSwabArrayOfLong8(value, count); |
2473 | 0 | return (TIFFWriteDirectoryTagData(tif, ndir, dir, tag, TIFF_LONG8, count, |
2474 | 0 | count * 8, value)); |
2475 | 0 | } |
2476 | | |
2477 | | static int TIFFWriteDirectoryTagCheckedSlong8Array(TIFF *tif, uint32_t *ndir, |
2478 | | TIFFDirEntry *dir, |
2479 | | uint16_t tag, uint32_t count, |
2480 | | int64_t *value) |
2481 | 0 | { |
2482 | 0 | assert(count < 0x20000000); |
2483 | 0 | assert(sizeof(int64_t) == 8); |
2484 | 0 | if (!(tif->tif_flags & TIFF_BIGTIFF)) |
2485 | 0 | { |
2486 | 0 | TIFFErrorExtR(tif, "TIFFWriteDirectoryTagCheckedSlong8Array", |
2487 | 0 | "SLONG8 not allowed for ClassicTIFF"); |
2488 | 0 | return (0); |
2489 | 0 | } |
2490 | 0 | if (dir == NULL) /* Just evaluate IFD data size and increment ndir. */ |
2491 | 0 | { |
2492 | 0 | EvaluateIFDdatasizeWrite(tif, count, 8, ndir); |
2493 | 0 | return 1; |
2494 | 0 | } |
2495 | 0 | if (tif->tif_flags & TIFF_SWAB) |
2496 | 0 | TIFFSwabArrayOfLong8((uint64_t *)value, count); |
2497 | 0 | return (TIFFWriteDirectoryTagData(tif, ndir, dir, tag, TIFF_SLONG8, count, |
2498 | 0 | count * 8, value)); |
2499 | 0 | } |
2500 | | |
2501 | | static int TIFFWriteDirectoryTagCheckedRational(TIFF *tif, uint32_t *ndir, |
2502 | | TIFFDirEntry *dir, uint16_t tag, |
2503 | | double value) |
2504 | 0 | { |
2505 | 0 | static const char module[] = "TIFFWriteDirectoryTagCheckedRational"; |
2506 | 0 | uint32_t m[2]; |
2507 | 0 | assert(sizeof(uint32_t) == 4); |
2508 | 0 | if (value < 0) |
2509 | 0 | { |
2510 | 0 | TIFFErrorExtR(tif, module, "Negative value is illegal"); |
2511 | 0 | return 0; |
2512 | 0 | } |
2513 | 0 | else if (value != value) |
2514 | 0 | { |
2515 | 0 | TIFFErrorExtR(tif, module, "Not-a-number value is illegal"); |
2516 | 0 | return 0; |
2517 | 0 | } |
2518 | | |
2519 | 0 | if (dir == NULL) /* Just evaluate IFD data size and increment ndir. */ |
2520 | 0 | { |
2521 | 0 | tif->tif_dir.td_dirdatasize_write += |
2522 | 0 | (tif->tif_flags & TIFF_BIGTIFF) ? 0 : 0x8U; |
2523 | 0 | (*ndir)++; |
2524 | 0 | return 1; |
2525 | 0 | } |
2526 | | |
2527 | 0 | DoubleToRational(value, &m[0], &m[1]); |
2528 | |
|
2529 | 0 | if (tif->tif_flags & TIFF_SWAB) |
2530 | 0 | { |
2531 | 0 | TIFFSwabLong(&m[0]); |
2532 | 0 | TIFFSwabLong(&m[1]); |
2533 | 0 | } |
2534 | 0 | return (TIFFWriteDirectoryTagData(tif, ndir, dir, tag, TIFF_RATIONAL, 1, 8, |
2535 | 0 | &m[0])); |
2536 | 0 | } |
2537 | | |
2538 | | static int TIFFWriteDirectoryTagCheckedRationalArray(TIFF *tif, uint32_t *ndir, |
2539 | | TIFFDirEntry *dir, |
2540 | | uint16_t tag, |
2541 | | uint32_t count, |
2542 | | float *value) |
2543 | 0 | { |
2544 | 0 | static const char module[] = "TIFFWriteDirectoryTagCheckedRationalArray"; |
2545 | 0 | uint32_t *m; |
2546 | 0 | float *na; |
2547 | 0 | uint32_t *nb; |
2548 | 0 | uint32_t nc; |
2549 | 0 | int o; |
2550 | 0 | assert(sizeof(uint32_t) == 4); |
2551 | 0 | if (dir == NULL) /* Just evaluate IFD data size and increment ndir. */ |
2552 | 0 | { |
2553 | 0 | EvaluateIFDdatasizeWrite(tif, count * 2, sizeof(uint32_t), ndir); |
2554 | 0 | return 1; |
2555 | 0 | } |
2556 | 0 | m = (uint32_t *)_TIFFmallocExt(tif, count * 2 * sizeof(uint32_t)); |
2557 | 0 | if (m == NULL) |
2558 | 0 | { |
2559 | 0 | TIFFErrorExtR(tif, module, "Out of memory"); |
2560 | 0 | return (0); |
2561 | 0 | } |
2562 | 0 | for (na = value, nb = m, nc = 0; nc < count; na++, nb += 2, nc++) |
2563 | 0 | { |
2564 | 0 | DoubleToRational(*na, &nb[0], &nb[1]); |
2565 | 0 | } |
2566 | 0 | if (tif->tif_flags & TIFF_SWAB) |
2567 | 0 | TIFFSwabArrayOfLong(m, count * 2); |
2568 | 0 | o = TIFFWriteDirectoryTagData(tif, ndir, dir, tag, TIFF_RATIONAL, count, |
2569 | 0 | count * 8, &m[0]); |
2570 | 0 | _TIFFfreeExt(tif, m); |
2571 | 0 | return (o); |
2572 | 0 | } |
2573 | | |
2574 | | static int TIFFWriteDirectoryTagCheckedSrationalArray(TIFF *tif, uint32_t *ndir, |
2575 | | TIFFDirEntry *dir, |
2576 | | uint16_t tag, |
2577 | | uint32_t count, |
2578 | | float *value) |
2579 | 0 | { |
2580 | 0 | static const char module[] = "TIFFWriteDirectoryTagCheckedSrationalArray"; |
2581 | 0 | int32_t *m; |
2582 | 0 | float *na; |
2583 | 0 | int32_t *nb; |
2584 | 0 | uint32_t nc; |
2585 | 0 | int o; |
2586 | 0 | assert(sizeof(int32_t) == 4); |
2587 | 0 | if (dir == NULL) /* Just evaluate IFD data size and increment ndir. */ |
2588 | 0 | { |
2589 | 0 | EvaluateIFDdatasizeWrite(tif, count * 2, sizeof(int32_t), ndir); |
2590 | 0 | return 1; |
2591 | 0 | } |
2592 | 0 | m = (int32_t *)_TIFFmallocExt(tif, count * 2 * sizeof(int32_t)); |
2593 | 0 | if (m == NULL) |
2594 | 0 | { |
2595 | 0 | TIFFErrorExtR(tif, module, "Out of memory"); |
2596 | 0 | return (0); |
2597 | 0 | } |
2598 | 0 | for (na = value, nb = m, nc = 0; nc < count; na++, nb += 2, nc++) |
2599 | 0 | { |
2600 | 0 | DoubleToSrational(*na, &nb[0], &nb[1]); |
2601 | 0 | } |
2602 | 0 | if (tif->tif_flags & TIFF_SWAB) |
2603 | 0 | TIFFSwabArrayOfLong((uint32_t *)m, count * 2); |
2604 | 0 | o = TIFFWriteDirectoryTagData(tif, ndir, dir, tag, TIFF_SRATIONAL, count, |
2605 | 0 | count * 8, &m[0]); |
2606 | 0 | _TIFFfreeExt(tif, m); |
2607 | 0 | return (o); |
2608 | 0 | } |
2609 | | |
2610 | | /*-- Rational2Double: additional write functions for double arrays */ |
2611 | | static int |
2612 | | TIFFWriteDirectoryTagCheckedRationalDoubleArray(TIFF *tif, uint32_t *ndir, |
2613 | | TIFFDirEntry *dir, uint16_t tag, |
2614 | | uint32_t count, double *value) |
2615 | 0 | { |
2616 | 0 | static const char module[] = |
2617 | 0 | "TIFFWriteDirectoryTagCheckedRationalDoubleArray"; |
2618 | 0 | uint32_t *m; |
2619 | 0 | double *na; |
2620 | 0 | uint32_t *nb; |
2621 | 0 | uint32_t nc; |
2622 | 0 | int o; |
2623 | 0 | assert(sizeof(uint32_t) == 4); |
2624 | 0 | if (dir == NULL) /* Just evaluate IFD data size and increment ndir. */ |
2625 | 0 | { |
2626 | 0 | EvaluateIFDdatasizeWrite(tif, count * 2, sizeof(uint32_t), ndir); |
2627 | 0 | return 1; |
2628 | 0 | } |
2629 | 0 | m = (uint32_t *)_TIFFmallocExt(tif, count * 2 * sizeof(uint32_t)); |
2630 | 0 | if (m == NULL) |
2631 | 0 | { |
2632 | 0 | TIFFErrorExtR(tif, module, "Out of memory"); |
2633 | 0 | return (0); |
2634 | 0 | } |
2635 | 0 | for (na = value, nb = m, nc = 0; nc < count; na++, nb += 2, nc++) |
2636 | 0 | { |
2637 | 0 | DoubleToRational(*na, &nb[0], &nb[1]); |
2638 | 0 | } |
2639 | 0 | if (tif->tif_flags & TIFF_SWAB) |
2640 | 0 | TIFFSwabArrayOfLong(m, count * 2); |
2641 | 0 | o = TIFFWriteDirectoryTagData(tif, ndir, dir, tag, TIFF_RATIONAL, count, |
2642 | 0 | count * 8, &m[0]); |
2643 | 0 | _TIFFfreeExt(tif, m); |
2644 | 0 | return (o); |
2645 | 0 | } /*-- TIFFWriteDirectoryTagCheckedRationalDoubleArray() ------- */ |
2646 | | |
2647 | | static int TIFFWriteDirectoryTagCheckedSrationalDoubleArray( |
2648 | | TIFF *tif, uint32_t *ndir, TIFFDirEntry *dir, uint16_t tag, uint32_t count, |
2649 | | double *value) |
2650 | 0 | { |
2651 | 0 | static const char module[] = |
2652 | 0 | "TIFFWriteDirectoryTagCheckedSrationalDoubleArray"; |
2653 | 0 | int32_t *m; |
2654 | 0 | double *na; |
2655 | 0 | int32_t *nb; |
2656 | 0 | uint32_t nc; |
2657 | 0 | int o; |
2658 | 0 | assert(sizeof(int32_t) == 4); |
2659 | 0 | if (dir == NULL) /* Just evaluate IFD data size and increment ndir. */ |
2660 | 0 | { |
2661 | 0 | EvaluateIFDdatasizeWrite(tif, count * 2, sizeof(int32_t), ndir); |
2662 | 0 | return 1; |
2663 | 0 | } |
2664 | 0 | m = (int32_t *)_TIFFmallocExt(tif, count * 2 * sizeof(int32_t)); |
2665 | 0 | if (m == NULL) |
2666 | 0 | { |
2667 | 0 | TIFFErrorExtR(tif, module, "Out of memory"); |
2668 | 0 | return (0); |
2669 | 0 | } |
2670 | 0 | for (na = value, nb = m, nc = 0; nc < count; na++, nb += 2, nc++) |
2671 | 0 | { |
2672 | 0 | DoubleToSrational(*na, &nb[0], &nb[1]); |
2673 | 0 | } |
2674 | 0 | if (tif->tif_flags & TIFF_SWAB) |
2675 | 0 | TIFFSwabArrayOfLong((uint32_t *)m, count * 2); |
2676 | 0 | o = TIFFWriteDirectoryTagData(tif, ndir, dir, tag, TIFF_SRATIONAL, count, |
2677 | 0 | count * 8, &m[0]); |
2678 | 0 | _TIFFfreeExt(tif, m); |
2679 | 0 | return (o); |
2680 | 0 | } /*--- TIFFWriteDirectoryTagCheckedSrationalDoubleArray() -------- */ |
2681 | | |
2682 | | /** ----- Rational2Double: Double To Rational Conversion |
2683 | | ---------------------------------------------------------- |
2684 | | * There is a mathematical theorem to convert real numbers into a rational |
2685 | | (integer fraction) number. |
2686 | | * This is called "continuous fraction" which uses the Euclidean algorithm to |
2687 | | find the greatest common divisor (GCD). |
2688 | | * (ref. e.g. https://de.wikipedia.org/wiki/Kettenbruch or |
2689 | | https://en.wikipedia.org/wiki/Continued_fraction |
2690 | | * https://en.wikipedia.org/wiki/Euclidean_algorithm) |
2691 | | * The following functions implement the |
2692 | | * - ToRationalEuclideanGCD() auxiliary function which mainly |
2693 | | implements euclidean GCD |
2694 | | * - DoubleToRational() conversion function for un-signed |
2695 | | rationals |
2696 | | * - DoubleToSrational() conversion function for signed rationals |
2697 | | ------------------------------------------------------------------------------------------------------------------*/ |
2698 | | |
2699 | | /**---- ToRationalEuclideanGCD() ----------------------------------------- |
2700 | | * Calculates the rational fractional of a double input value |
2701 | | * using the Euclidean algorithm to find the greatest common divisor (GCD) |
2702 | | ------------------------------------------------------------------------*/ |
2703 | | static void ToRationalEuclideanGCD(double value, int blnUseSignedRange, |
2704 | | int blnUseSmallRange, uint64_t *ullNum, |
2705 | | uint64_t *ullDenom) |
2706 | 0 | { |
2707 | | /* Internally, the integer variables can be bigger than the external ones, |
2708 | | * as long as the result will fit into the external variable size. |
2709 | | */ |
2710 | 0 | uint64_t numSum[3] = {0, 1, 0}, denomSum[3] = {1, 0, 0}; |
2711 | 0 | uint64_t aux, bigNum, bigDenom; |
2712 | 0 | uint64_t returnLimit; |
2713 | 0 | int i; |
2714 | 0 | uint64_t nMax; |
2715 | 0 | double fMax; |
2716 | 0 | unsigned long maxDenom; |
2717 | | /*-- nMax and fMax defines the initial accuracy of the starting fractional, |
2718 | | * or better, the highest used integer numbers used within the starting |
2719 | | * fractional (bigNum/bigDenom). There are two approaches, which can |
2720 | | * accidentally lead to different accuracies just depending on the value. |
2721 | | * Therefore, blnUseSmallRange steers this behavior. |
2722 | | * For long long nMax = ((9223372036854775807-1)/2); for long nMax = |
2723 | | * ((2147483647-1)/2); |
2724 | | */ |
2725 | 0 | if (blnUseSmallRange) |
2726 | 0 | { |
2727 | 0 | nMax = (uint64_t)((2147483647 - 1) / 2); /* for ULONG range */ |
2728 | 0 | } |
2729 | 0 | else |
2730 | 0 | { |
2731 | 0 | nMax = ((9223372036854775807 - 1) / 2); /* for ULLONG range */ |
2732 | 0 | } |
2733 | 0 | fMax = (double)nMax; |
2734 | | |
2735 | | /*-- For the Euclidean GCD define the denominator range, so that it stays |
2736 | | * within size of unsigned long variables. maxDenom should be LONG_MAX for |
2737 | | * negative values and ULONG_MAX for positive ones. Also the final returned |
2738 | | * value of ullNum and ullDenom is limited according to signed- or |
2739 | | * unsigned-range. |
2740 | | */ |
2741 | 0 | if (blnUseSignedRange) |
2742 | 0 | { |
2743 | 0 | maxDenom = 2147483647UL; /*LONG_MAX = 0x7FFFFFFFUL*/ |
2744 | 0 | returnLimit = maxDenom; |
2745 | 0 | } |
2746 | 0 | else |
2747 | 0 | { |
2748 | 0 | maxDenom = 0xFFFFFFFFUL; /*ULONG_MAX = 0xFFFFFFFFUL*/ |
2749 | 0 | returnLimit = maxDenom; |
2750 | 0 | } |
2751 | | |
2752 | | /*-- First generate a rational fraction (bigNum/bigDenom) which represents |
2753 | | *the value as a rational number with the highest accuracy. Therefore, |
2754 | | *uint64_t (uint64_t) is needed. This rational fraction is then reduced |
2755 | | *using the Euclidean algorithm to find the greatest common divisor (GCD). |
2756 | | * bigNum = big numinator of value without fraction (or cut residual |
2757 | | *fraction) bigDenom = big denominator of value |
2758 | | *-- Break-criteria so that uint64_t cast to "bigNum" introduces no error |
2759 | | *and bigDenom has no overflow, and stop with enlargement of fraction when |
2760 | | *the double-value of it reaches an integer number without fractional part. |
2761 | | */ |
2762 | 0 | bigDenom = 1; |
2763 | 0 | while ((value != floor(value)) && (value < fMax) && (bigDenom < nMax)) |
2764 | 0 | { |
2765 | 0 | bigDenom <<= 1; |
2766 | 0 | value *= 2; |
2767 | 0 | } |
2768 | 0 | bigNum = (uint64_t)value; |
2769 | | |
2770 | | /*-- Start Euclidean algorithm to find the greatest common divisor (GCD) -- |
2771 | | */ |
2772 | 0 | #define MAX_ITERATIONS 64 |
2773 | 0 | for (i = 0; i < MAX_ITERATIONS; i++) |
2774 | 0 | { |
2775 | 0 | uint64_t val; |
2776 | | /* if bigDenom is not zero, calculate integer part of fraction. */ |
2777 | 0 | if (bigDenom == 0) |
2778 | 0 | { |
2779 | 0 | break; |
2780 | 0 | } |
2781 | 0 | val = bigNum / bigDenom; |
2782 | | |
2783 | | /* Set bigDenom to reminder of bigNum/bigDenom and bigNum to previous |
2784 | | * denominator bigDenom. */ |
2785 | 0 | aux = bigNum; |
2786 | 0 | bigNum = bigDenom; |
2787 | 0 | bigDenom = aux % bigDenom; |
2788 | | |
2789 | | /* calculate next denominator and check for its given maximum */ |
2790 | 0 | aux = val; |
2791 | 0 | if (denomSum[1] * val + denomSum[0] >= maxDenom) |
2792 | 0 | { |
2793 | 0 | aux = (maxDenom - denomSum[0]) / denomSum[1]; |
2794 | 0 | if (aux * 2 >= val || denomSum[1] >= maxDenom) |
2795 | 0 | i = (MAX_ITERATIONS + |
2796 | 0 | 1); /* exit but execute rest of for-loop */ |
2797 | 0 | else |
2798 | 0 | break; |
2799 | 0 | } |
2800 | | /* calculate next numerator to numSum2 and save previous one to numSum0; |
2801 | | * numSum1 just copy of numSum2. */ |
2802 | 0 | numSum[2] = aux * numSum[1] + numSum[0]; |
2803 | 0 | numSum[0] = numSum[1]; |
2804 | 0 | numSum[1] = numSum[2]; |
2805 | | /* calculate next denominator to denomSum2 and save previous one to |
2806 | | * denomSum0; denomSum1 just copy of denomSum2. */ |
2807 | 0 | denomSum[2] = aux * denomSum[1] + denomSum[0]; |
2808 | 0 | denomSum[0] = denomSum[1]; |
2809 | 0 | denomSum[1] = denomSum[2]; |
2810 | 0 | } |
2811 | | |
2812 | | /*-- Check and adapt for final variable size and return values; reduces |
2813 | | * internal accuracy; denominator is kept in ULONG-range with maxDenom -- */ |
2814 | 0 | while (numSum[1] > returnLimit || denomSum[1] > returnLimit) |
2815 | 0 | { |
2816 | 0 | numSum[1] = numSum[1] / 2; |
2817 | 0 | denomSum[1] = denomSum[1] / 2; |
2818 | 0 | } |
2819 | | |
2820 | | /* return values */ |
2821 | 0 | *ullNum = numSum[1]; |
2822 | 0 | *ullDenom = denomSum[1]; |
2823 | |
|
2824 | 0 | } /*-- ToRationalEuclideanGCD() -------------- */ |
2825 | | |
2826 | | /**---- DoubleToRational() ----------------------------------------------- |
2827 | | * Calculates the rational fractional of a double input value |
2828 | | * for UN-SIGNED rationals, |
2829 | | * using the Euclidean algorithm to find the greatest common divisor (GCD) |
2830 | | ------------------------------------------------------------------------*/ |
2831 | | static void DoubleToRational(double value, uint32_t *num, uint32_t *denom) |
2832 | 0 | { |
2833 | | /*---- UN-SIGNED RATIONAL ---- */ |
2834 | 0 | double dblDiff, dblDiff2; |
2835 | 0 | uint64_t ullNum, ullDenom, ullNum2, ullDenom2; |
2836 | | |
2837 | | /*-- Check for negative values. If so it is an error. */ |
2838 | | /* Test written that way to catch NaN */ |
2839 | 0 | if (!(value >= 0)) |
2840 | 0 | { |
2841 | 0 | *num = *denom = 0; |
2842 | 0 | TIFFErrorExt(0, "TIFFLib: DoubleToRational()", |
2843 | 0 | " Negative Value for Unsigned Rational given."); |
2844 | 0 | return; |
2845 | 0 | } |
2846 | | |
2847 | | /*-- Check for too big numbers (> ULONG_MAX) -- */ |
2848 | 0 | if (value > 0xFFFFFFFFUL) |
2849 | 0 | { |
2850 | 0 | *num = 0xFFFFFFFFU; |
2851 | 0 | *denom = 0; |
2852 | 0 | return; |
2853 | 0 | } |
2854 | | /*-- Check for easy integer numbers -- */ |
2855 | 0 | if (value == (uint32_t)(value)) |
2856 | 0 | { |
2857 | 0 | *num = (uint32_t)value; |
2858 | 0 | *denom = 1; |
2859 | 0 | return; |
2860 | 0 | } |
2861 | | /*-- Check for too small numbers for "unsigned long" type rationals -- */ |
2862 | 0 | if (value < 1.0 / (double)0xFFFFFFFFUL) |
2863 | 0 | { |
2864 | 0 | *num = 0; |
2865 | 0 | *denom = 0xFFFFFFFFU; |
2866 | 0 | return; |
2867 | 0 | } |
2868 | | |
2869 | | /*-- There are two approaches using the Euclidean algorithm, |
2870 | | * which can accidentally lead to different accuracies just depending on |
2871 | | * the value. Try both and define which one was better. |
2872 | | */ |
2873 | 0 | ToRationalEuclideanGCD(value, FALSE, FALSE, &ullNum, &ullDenom); |
2874 | 0 | ToRationalEuclideanGCD(value, FALSE, TRUE, &ullNum2, &ullDenom2); |
2875 | | /*-- Double-Check, that returned values fit into ULONG :*/ |
2876 | 0 | if (ullNum > 0xFFFFFFFFUL || ullDenom > 0xFFFFFFFFUL || |
2877 | 0 | ullNum2 > 0xFFFFFFFFUL || ullDenom2 > 0xFFFFFFFFUL) |
2878 | 0 | { |
2879 | 0 | TIFFErrorExt(0, "TIFFLib: DoubleToRational()", |
2880 | 0 | " Num or Denom exceeds ULONG: val=%14.6f, num=%12" PRIu64 |
2881 | 0 | ", denom=%12" PRIu64 " | num2=%12" PRIu64 |
2882 | 0 | ", denom2=%12" PRIu64 "", |
2883 | 0 | value, ullNum, ullDenom, ullNum2, ullDenom2); |
2884 | 0 | assert(0); |
2885 | 0 | } |
2886 | | |
2887 | | /* Check, which one has higher accuracy and take that. */ |
2888 | 0 | dblDiff = fabs(value - ((double)ullNum / (double)ullDenom)); |
2889 | 0 | dblDiff2 = fabs(value - ((double)ullNum2 / (double)ullDenom2)); |
2890 | 0 | if (dblDiff < dblDiff2) |
2891 | 0 | { |
2892 | 0 | *num = (uint32_t)ullNum; |
2893 | 0 | *denom = (uint32_t)ullDenom; |
2894 | 0 | } |
2895 | 0 | else |
2896 | 0 | { |
2897 | 0 | *num = (uint32_t)ullNum2; |
2898 | 0 | *denom = (uint32_t)ullDenom2; |
2899 | 0 | } |
2900 | 0 | } /*-- DoubleToRational() -------------- */ |
2901 | | |
2902 | | /**---- DoubleToSrational() ----------------------------------------------- |
2903 | | * Calculates the rational fractional of a double input value |
2904 | | * for SIGNED rationals, |
2905 | | * using the Euclidean algorithm to find the greatest common divisor (GCD) |
2906 | | ------------------------------------------------------------------------*/ |
2907 | | static void DoubleToSrational(double value, int32_t *num, int32_t *denom) |
2908 | 0 | { |
2909 | | /*---- SIGNED RATIONAL ----*/ |
2910 | 0 | int neg = 1; |
2911 | 0 | double dblDiff, dblDiff2; |
2912 | 0 | uint64_t ullNum, ullDenom, ullNum2, ullDenom2; |
2913 | | |
2914 | | /*-- Check for negative values and use then the positive one for internal |
2915 | | * calculations, but take the sign into account before returning. */ |
2916 | 0 | if (value < 0) |
2917 | 0 | { |
2918 | 0 | neg = -1; |
2919 | 0 | value = -value; |
2920 | 0 | } |
2921 | | |
2922 | | /*-- Check for too big numbers (> LONG_MAX) -- */ |
2923 | 0 | if (value > 0x7FFFFFFFL) |
2924 | 0 | { |
2925 | 0 | *num = 0x7FFFFFFFL; |
2926 | 0 | *denom = 0; |
2927 | 0 | return; |
2928 | 0 | } |
2929 | | /*-- Check for easy numbers -- */ |
2930 | 0 | if (value == (int32_t)(value)) |
2931 | 0 | { |
2932 | 0 | *num = (int32_t)(neg * value); |
2933 | 0 | *denom = 1; |
2934 | 0 | return; |
2935 | 0 | } |
2936 | | /*-- Check for too small numbers for "long" type rationals -- */ |
2937 | 0 | if (value < 1.0 / (double)0x7FFFFFFFL) |
2938 | 0 | { |
2939 | 0 | *num = 0; |
2940 | 0 | *denom = 0x7FFFFFFFL; |
2941 | 0 | return; |
2942 | 0 | } |
2943 | | |
2944 | | /*-- There are two approaches using the Euclidean algorithm, |
2945 | | * which can accidentally lead to different accuracies just depending on |
2946 | | * the value. Try both and define which one was better. Furthermore, set |
2947 | | * behavior of ToRationalEuclideanGCD() to the range of signed-long. |
2948 | | */ |
2949 | 0 | ToRationalEuclideanGCD(value, TRUE, FALSE, &ullNum, &ullDenom); |
2950 | 0 | ToRationalEuclideanGCD(value, TRUE, TRUE, &ullNum2, &ullDenom2); |
2951 | | /*-- Double-Check, that returned values fit into LONG :*/ |
2952 | 0 | if (ullNum > 0x7FFFFFFFL || ullDenom > 0x7FFFFFFFL || |
2953 | 0 | ullNum2 > 0x7FFFFFFFL || ullDenom2 > 0x7FFFFFFFL) |
2954 | 0 | { |
2955 | 0 | TIFFErrorExt(0, "TIFFLib: DoubleToSrational()", |
2956 | 0 | " Num or Denom exceeds LONG: val=%14.6f, num=%12" PRIu64 |
2957 | 0 | ", denom=%12" PRIu64 " | num2=%12" PRIu64 |
2958 | 0 | ", denom2=%12" PRIu64 "", |
2959 | 0 | neg * value, ullNum, ullDenom, ullNum2, ullDenom2); |
2960 | 0 | assert(0); |
2961 | 0 | } |
2962 | | |
2963 | | /* Check, which one has higher accuracy and take that. */ |
2964 | 0 | dblDiff = fabs(value - ((double)ullNum / (double)ullDenom)); |
2965 | 0 | dblDiff2 = fabs(value - ((double)ullNum2 / (double)ullDenom2)); |
2966 | 0 | if (dblDiff < dblDiff2) |
2967 | 0 | { |
2968 | 0 | *num = (int32_t)(neg * (long)ullNum); |
2969 | 0 | *denom = (int32_t)ullDenom; |
2970 | 0 | } |
2971 | 0 | else |
2972 | 0 | { |
2973 | 0 | *num = (int32_t)(neg * (long)ullNum2); |
2974 | 0 | *denom = (int32_t)ullDenom2; |
2975 | 0 | } |
2976 | 0 | } /*-- DoubleToSrational() --------------*/ |
2977 | | |
2978 | | static int TIFFWriteDirectoryTagCheckedFloatArray(TIFF *tif, uint32_t *ndir, |
2979 | | TIFFDirEntry *dir, |
2980 | | uint16_t tag, uint32_t count, |
2981 | | float *value) |
2982 | 0 | { |
2983 | 0 | assert(count < 0x40000000); |
2984 | 0 | assert(sizeof(float) == 4); |
2985 | 0 | if (dir == NULL) /* Just evaluate IFD data size and increment ndir. */ |
2986 | 0 | { |
2987 | 0 | EvaluateIFDdatasizeWrite(tif, count, 4, ndir); |
2988 | 0 | return 1; |
2989 | 0 | } |
2990 | 0 | TIFFCvtNativeToIEEEFloat(tif, count, value); |
2991 | 0 | if (tif->tif_flags & TIFF_SWAB) |
2992 | 0 | TIFFSwabArrayOfFloat(value, count); |
2993 | 0 | return (TIFFWriteDirectoryTagData(tif, ndir, dir, tag, TIFF_FLOAT, count, |
2994 | 0 | count * 4, value)); |
2995 | 0 | } |
2996 | | |
2997 | | static int TIFFWriteDirectoryTagCheckedDoubleArray(TIFF *tif, uint32_t *ndir, |
2998 | | TIFFDirEntry *dir, |
2999 | | uint16_t tag, uint32_t count, |
3000 | | double *value) |
3001 | 0 | { |
3002 | 0 | assert(count < 0x20000000); |
3003 | 0 | assert(sizeof(double) == 8); |
3004 | 0 | if (dir == NULL) /* Just evaluate IFD data size and increment ndir. */ |
3005 | 0 | { |
3006 | 0 | EvaluateIFDdatasizeWrite(tif, count, 8, ndir); |
3007 | 0 | return 1; |
3008 | 0 | } |
3009 | 0 | TIFFCvtNativeToIEEEDouble(tif, count, value); |
3010 | 0 | if (tif->tif_flags & TIFF_SWAB) |
3011 | 0 | TIFFSwabArrayOfDouble(value, count); |
3012 | 0 | return (TIFFWriteDirectoryTagData(tif, ndir, dir, tag, TIFF_DOUBLE, count, |
3013 | 0 | count * 8, value)); |
3014 | 0 | } |
3015 | | |
3016 | | static int TIFFWriteDirectoryTagCheckedIfdArray(TIFF *tif, uint32_t *ndir, |
3017 | | TIFFDirEntry *dir, uint16_t tag, |
3018 | | uint32_t count, uint32_t *value) |
3019 | 0 | { |
3020 | 0 | assert(count < 0x40000000); |
3021 | 0 | assert(sizeof(uint32_t) == 4); |
3022 | 0 | if (dir == NULL) /* Just evaluate IFD data size and increment ndir. */ |
3023 | 0 | { |
3024 | 0 | EvaluateIFDdatasizeWrite(tif, count, 4, ndir); |
3025 | 0 | return 1; |
3026 | 0 | } |
3027 | 0 | if (tif->tif_flags & TIFF_SWAB) |
3028 | 0 | TIFFSwabArrayOfLong(value, count); |
3029 | 0 | return (TIFFWriteDirectoryTagData(tif, ndir, dir, tag, TIFF_IFD, count, |
3030 | 0 | count * 4, value)); |
3031 | 0 | } |
3032 | | |
3033 | | static int TIFFWriteDirectoryTagCheckedIfd8Array(TIFF *tif, uint32_t *ndir, |
3034 | | TIFFDirEntry *dir, |
3035 | | uint16_t tag, uint32_t count, |
3036 | | uint64_t *value) |
3037 | 0 | { |
3038 | 0 | assert(count < 0x20000000); |
3039 | 0 | assert(sizeof(uint64_t) == 8); |
3040 | 0 | assert(tif->tif_flags & TIFF_BIGTIFF); |
3041 | 0 | if (dir == NULL) /* Just evaluate IFD data size and increment ndir. */ |
3042 | 0 | { |
3043 | 0 | EvaluateIFDdatasizeWrite(tif, count, 8, ndir); |
3044 | 0 | return 1; |
3045 | 0 | } |
3046 | 0 | if (tif->tif_flags & TIFF_SWAB) |
3047 | 0 | TIFFSwabArrayOfLong8(value, count); |
3048 | 0 | return (TIFFWriteDirectoryTagData(tif, ndir, dir, tag, TIFF_IFD8, count, |
3049 | 0 | count * 8, value)); |
3050 | 0 | } |
3051 | | |
3052 | | static int TIFFWriteDirectoryTagData(TIFF *tif, uint32_t *ndir, |
3053 | | TIFFDirEntry *dir, uint16_t tag, |
3054 | | uint16_t datatype, uint32_t count, |
3055 | | uint32_t datalength, void *data) |
3056 | 0 | { |
3057 | 0 | static const char module[] = "TIFFWriteDirectoryTagData"; |
3058 | 0 | uint32_t m; |
3059 | 0 | m = 0; |
3060 | 0 | while (m < (*ndir)) |
3061 | 0 | { |
3062 | 0 | assert(dir[m].tdir_tag != tag); |
3063 | 0 | if (dir[m].tdir_tag > tag) |
3064 | 0 | break; |
3065 | 0 | m++; |
3066 | 0 | } |
3067 | 0 | if (m < (*ndir)) |
3068 | 0 | { |
3069 | 0 | uint32_t n; |
3070 | 0 | for (n = *ndir; n > m; n--) |
3071 | 0 | dir[n] = dir[n - 1]; |
3072 | 0 | } |
3073 | 0 | dir[m].tdir_tag = tag; |
3074 | 0 | dir[m].tdir_type = datatype; |
3075 | 0 | dir[m].tdir_count = count; |
3076 | 0 | dir[m].tdir_offset.toff_long8 = 0; |
3077 | 0 | if (datalength <= ((tif->tif_flags & TIFF_BIGTIFF) ? 0x8U : 0x4U)) |
3078 | 0 | { |
3079 | 0 | if (data && datalength) |
3080 | 0 | { |
3081 | 0 | _TIFFmemcpy(&dir[m].tdir_offset, data, datalength); |
3082 | 0 | } |
3083 | 0 | } |
3084 | 0 | else |
3085 | 0 | { |
3086 | 0 | uint64_t na, nb; |
3087 | 0 | na = tif->tif_dataoff; |
3088 | 0 | nb = na + datalength; |
3089 | 0 | if (!(tif->tif_flags & TIFF_BIGTIFF)) |
3090 | 0 | nb = (uint32_t)nb; |
3091 | 0 | if ((nb < na) || (nb < datalength)) |
3092 | 0 | { |
3093 | 0 | TIFFErrorExtR(tif, module, "Maximum TIFF file size exceeded"); |
3094 | 0 | return (0); |
3095 | 0 | } |
3096 | 0 | if (!SeekOK(tif, na)) |
3097 | 0 | { |
3098 | 0 | TIFFErrorExtR(tif, module, "IO error writing tag data"); |
3099 | 0 | return (0); |
3100 | 0 | } |
3101 | 0 | if (datalength >= 0x80000000UL) |
3102 | 0 | { |
3103 | 0 | TIFFErrorExtR(tif, module, |
3104 | 0 | "libtiff does not allow writing more than 2147483647 " |
3105 | 0 | "bytes in a tag"); |
3106 | 0 | return (0); |
3107 | 0 | } |
3108 | 0 | if (!WriteOK(tif, data, (tmsize_t)datalength)) |
3109 | 0 | { |
3110 | 0 | TIFFErrorExtR(tif, module, "IO error writing tag data"); |
3111 | 0 | return (0); |
3112 | 0 | } |
3113 | 0 | tif->tif_dataoff = nb; |
3114 | 0 | if (tif->tif_dataoff & 1) |
3115 | 0 | tif->tif_dataoff++; |
3116 | 0 | if (!(tif->tif_flags & TIFF_BIGTIFF)) |
3117 | 0 | { |
3118 | 0 | uint32_t o; |
3119 | 0 | o = (uint32_t)na; |
3120 | 0 | if (tif->tif_flags & TIFF_SWAB) |
3121 | 0 | TIFFSwabLong(&o); |
3122 | 0 | _TIFFmemcpy(&dir[m].tdir_offset, &o, 4); |
3123 | 0 | } |
3124 | 0 | else |
3125 | 0 | { |
3126 | 0 | dir[m].tdir_offset.toff_long8 = na; |
3127 | 0 | if (tif->tif_flags & TIFF_SWAB) |
3128 | 0 | TIFFSwabLong8(&dir[m].tdir_offset.toff_long8); |
3129 | 0 | } |
3130 | 0 | } |
3131 | 0 | (*ndir)++; |
3132 | 0 | return (1); |
3133 | 0 | } |
3134 | | |
3135 | | /* |
3136 | | * Link the current directory into the directory chain for the file. |
3137 | | */ |
3138 | | static int TIFFLinkDirectory(TIFF *tif) |
3139 | 0 | { |
3140 | 0 | static const char module[] = "TIFFLinkDirectory"; |
3141 | |
|
3142 | 0 | tif->tif_diroff = (TIFFSeekFile(tif, 0, SEEK_END) + 1) & (~((toff_t)1)); |
3143 | | |
3144 | | /* |
3145 | | * Handle SubIFDs |
3146 | | */ |
3147 | 0 | if (tif->tif_flags & TIFF_INSUBIFD) |
3148 | 0 | { |
3149 | 0 | if (!(tif->tif_flags & TIFF_BIGTIFF)) |
3150 | 0 | { |
3151 | 0 | uint32_t m; |
3152 | 0 | m = (uint32_t)tif->tif_diroff; |
3153 | 0 | if (tif->tif_flags & TIFF_SWAB) |
3154 | 0 | TIFFSwabLong(&m); |
3155 | 0 | (void)TIFFSeekFile(tif, tif->tif_subifdoff, SEEK_SET); |
3156 | 0 | if (!WriteOK(tif, &m, 4)) |
3157 | 0 | { |
3158 | 0 | TIFFErrorExtR(tif, module, |
3159 | 0 | "Error writing SubIFD directory link"); |
3160 | 0 | return (0); |
3161 | 0 | } |
3162 | | |
3163 | | /* |
3164 | | * Advance to the next SubIFD or, if this is |
3165 | | * the last one configured, reverting back to the |
3166 | | * normal directory linkage is done in TIFFWriteDirectorySec() |
3167 | | * by tif->tif_flags &= ~TIFF_INSUBIFD;. |
3168 | | */ |
3169 | 0 | if (--tif->tif_nsubifd) |
3170 | 0 | tif->tif_subifdoff += 4; |
3171 | 0 | return (1); |
3172 | 0 | } |
3173 | 0 | else |
3174 | 0 | { |
3175 | 0 | uint64_t m; |
3176 | 0 | m = tif->tif_diroff; |
3177 | 0 | if (tif->tif_flags & TIFF_SWAB) |
3178 | 0 | TIFFSwabLong8(&m); |
3179 | 0 | (void)TIFFSeekFile(tif, tif->tif_subifdoff, SEEK_SET); |
3180 | 0 | if (!WriteOK(tif, &m, 8)) |
3181 | 0 | { |
3182 | 0 | TIFFErrorExtR(tif, module, |
3183 | 0 | "Error writing SubIFD directory link"); |
3184 | 0 | return (0); |
3185 | 0 | } |
3186 | | |
3187 | | /* |
3188 | | * Advance to the next SubIFD or, if this is |
3189 | | * the last one configured, reverting back to the |
3190 | | * normal directory linkage is done in TIFFWriteDirectorySec() |
3191 | | * by tif->tif_flags &= ~TIFF_INSUBIFD;. |
3192 | | */ |
3193 | 0 | if (--tif->tif_nsubifd) |
3194 | 0 | tif->tif_subifdoff += 8; |
3195 | 0 | return (1); |
3196 | 0 | } |
3197 | 0 | } |
3198 | | |
3199 | | /* |
3200 | | * Handle main-IFDs |
3201 | | */ |
3202 | 0 | tdir_t ndir = 1; /* count current number of main-IFDs */ |
3203 | 0 | if (!(tif->tif_flags & TIFF_BIGTIFF)) |
3204 | 0 | { |
3205 | 0 | uint32_t m; |
3206 | 0 | uint32_t nextdir; |
3207 | 0 | m = (uint32_t)(tif->tif_diroff); |
3208 | 0 | if (tif->tif_flags & TIFF_SWAB) |
3209 | 0 | TIFFSwabLong(&m); |
3210 | 0 | if (tif->tif_header.classic.tiff_diroff == 0) |
3211 | 0 | { |
3212 | | /* |
3213 | | * First directory, overwrite offset in header. |
3214 | | */ |
3215 | 0 | tif->tif_header.classic.tiff_diroff = (uint32_t)tif->tif_diroff; |
3216 | 0 | tif->tif_lastdiroff = tif->tif_diroff; |
3217 | 0 | (void)TIFFSeekFile(tif, 4, SEEK_SET); |
3218 | 0 | if (!WriteOK(tif, &m, 4)) |
3219 | 0 | { |
3220 | 0 | TIFFErrorExtR(tif, tif->tif_name, "Error writing TIFF header"); |
3221 | 0 | return (0); |
3222 | 0 | } |
3223 | 0 | if (!tif->tif_dir.td_iswrittentofile) |
3224 | 0 | tif->tif_curdircount = 0; |
3225 | 0 | return (1); |
3226 | 0 | } |
3227 | | /* |
3228 | | * Not the first directory, search to the last and append. |
3229 | | */ |
3230 | 0 | tdir_t dirn = 0; |
3231 | 0 | if (tif->tif_lastdiroff != 0 && |
3232 | 0 | _TIFFGetDirNumberFromOffset(tif, tif->tif_lastdiroff, &dirn)) |
3233 | 0 | { |
3234 | | /* Start searching from the lastely written IFD. Thus get its IFD |
3235 | | * number. */ |
3236 | 0 | nextdir = (uint32_t)tif->tif_lastdiroff; |
3237 | 0 | ndir = dirn + 1; |
3238 | 0 | } |
3239 | 0 | else |
3240 | 0 | { |
3241 | 0 | nextdir = tif->tif_header.classic.tiff_diroff; |
3242 | 0 | ndir = 1; /* start searching from the first IFD */ |
3243 | 0 | } |
3244 | |
|
3245 | 0 | while (1) |
3246 | 0 | { |
3247 | 0 | uint16_t dircount; |
3248 | 0 | uint32_t nextnextdir; |
3249 | |
|
3250 | 0 | if (!SeekOK(tif, nextdir) || !ReadOK(tif, &dircount, 2)) |
3251 | 0 | { |
3252 | 0 | TIFFErrorExtR(tif, module, "Error fetching directory count"); |
3253 | 0 | return (0); |
3254 | 0 | } |
3255 | 0 | if (tif->tif_flags & TIFF_SWAB) |
3256 | 0 | TIFFSwabShort(&dircount); |
3257 | 0 | (void)TIFFSeekFile(tif, nextdir + 2 + dircount * 12, SEEK_SET); |
3258 | 0 | if (!ReadOK(tif, &nextnextdir, 4)) |
3259 | 0 | { |
3260 | 0 | TIFFErrorExtR(tif, module, "Error fetching directory link"); |
3261 | 0 | return (0); |
3262 | 0 | } |
3263 | 0 | if (tif->tif_flags & TIFF_SWAB) |
3264 | 0 | TIFFSwabLong(&nextnextdir); |
3265 | 0 | if (nextnextdir == 0) |
3266 | 0 | { |
3267 | 0 | (void)TIFFSeekFile(tif, nextdir + 2 + dircount * 12, SEEK_SET); |
3268 | 0 | if (!WriteOK(tif, &m, 4)) |
3269 | 0 | { |
3270 | 0 | TIFFErrorExtR(tif, module, "Error writing directory link"); |
3271 | 0 | return (0); |
3272 | 0 | } |
3273 | 0 | tif->tif_lastdiroff = tif->tif_diroff; |
3274 | 0 | break; |
3275 | 0 | } |
3276 | 0 | nextdir = nextnextdir; |
3277 | 0 | ndir++; |
3278 | 0 | } |
3279 | 0 | } |
3280 | 0 | else |
3281 | 0 | { |
3282 | | /*- BigTIFF -*/ |
3283 | 0 | uint64_t m; |
3284 | 0 | uint64_t nextdir; |
3285 | 0 | m = tif->tif_diroff; |
3286 | 0 | if (tif->tif_flags & TIFF_SWAB) |
3287 | 0 | TIFFSwabLong8(&m); |
3288 | 0 | if (tif->tif_header.big.tiff_diroff == 0) |
3289 | 0 | { |
3290 | | /* |
3291 | | * First directory, overwrite offset in header. |
3292 | | */ |
3293 | 0 | tif->tif_header.big.tiff_diroff = tif->tif_diroff; |
3294 | 0 | tif->tif_lastdiroff = tif->tif_diroff; |
3295 | 0 | (void)TIFFSeekFile(tif, 8, SEEK_SET); |
3296 | 0 | if (!WriteOK(tif, &m, 8)) |
3297 | 0 | { |
3298 | 0 | TIFFErrorExtR(tif, tif->tif_name, "Error writing TIFF header"); |
3299 | 0 | return (0); |
3300 | 0 | } |
3301 | 0 | if (!tif->tif_dir.td_iswrittentofile) |
3302 | 0 | tif->tif_curdircount = 0; |
3303 | 0 | return (1); |
3304 | 0 | } |
3305 | | /* |
3306 | | * Not the first directory, search to the last and append. |
3307 | | */ |
3308 | 0 | tdir_t dirn = 0; |
3309 | 0 | if (tif->tif_lastdiroff != 0 && |
3310 | 0 | _TIFFGetDirNumberFromOffset(tif, tif->tif_lastdiroff, &dirn)) |
3311 | 0 | { |
3312 | | /* Start searching from the lastely written IFD. Thus get its IFD |
3313 | | * number. */ |
3314 | 0 | nextdir = tif->tif_lastdiroff; |
3315 | 0 | ndir = dirn + 1; |
3316 | 0 | } |
3317 | 0 | else |
3318 | 0 | { |
3319 | 0 | nextdir = tif->tif_header.big.tiff_diroff; |
3320 | 0 | ndir = 1; /* start searching from the first IFD */ |
3321 | 0 | } |
3322 | 0 | while (1) |
3323 | 0 | { |
3324 | 0 | uint64_t dircount64; |
3325 | 0 | uint16_t dircount; |
3326 | 0 | uint64_t nextnextdir; |
3327 | |
|
3328 | 0 | if (!SeekOK(tif, nextdir) || !ReadOK(tif, &dircount64, 8)) |
3329 | 0 | { |
3330 | 0 | TIFFErrorExtR(tif, module, "Error fetching directory count"); |
3331 | 0 | return (0); |
3332 | 0 | } |
3333 | 0 | if (tif->tif_flags & TIFF_SWAB) |
3334 | 0 | TIFFSwabLong8(&dircount64); |
3335 | 0 | if (dircount64 > 0xFFFF) |
3336 | 0 | { |
3337 | 0 | TIFFErrorExtR(tif, module, |
3338 | 0 | "Sanity check on tag count failed, " |
3339 | 0 | "likely corrupt TIFF"); |
3340 | 0 | return (0); |
3341 | 0 | } |
3342 | 0 | dircount = (uint16_t)dircount64; |
3343 | 0 | (void)TIFFSeekFile(tif, nextdir + 8 + dircount * 20, SEEK_SET); |
3344 | 0 | if (!ReadOK(tif, &nextnextdir, 8)) |
3345 | 0 | { |
3346 | 0 | TIFFErrorExtR(tif, module, "Error fetching directory link"); |
3347 | 0 | return (0); |
3348 | 0 | } |
3349 | 0 | if (tif->tif_flags & TIFF_SWAB) |
3350 | 0 | TIFFSwabLong8(&nextnextdir); |
3351 | 0 | if (nextnextdir == 0) |
3352 | 0 | { |
3353 | 0 | (void)TIFFSeekFile(tif, nextdir + 8 + dircount * 20, SEEK_SET); |
3354 | 0 | if (!WriteOK(tif, &m, 8)) |
3355 | 0 | { |
3356 | 0 | TIFFErrorExtR(tif, module, "Error writing directory link"); |
3357 | 0 | return (0); |
3358 | 0 | } |
3359 | 0 | tif->tif_lastdiroff = tif->tif_diroff; |
3360 | 0 | break; |
3361 | 0 | } |
3362 | 0 | nextdir = nextnextdir; |
3363 | 0 | ndir++; |
3364 | 0 | } |
3365 | 0 | } |
3366 | | /* Offset of next IFD is written to file. |
3367 | | * Update number of main-IFDs in file. |
3368 | | * However, tif_curdircount shall count only newly written main-IFDs with |
3369 | | * entries and not only number of linked offsets! Thus, tif_curdircount is |
3370 | | * incremented at the end of TIFFWriteDirectorySec(). |
3371 | | * TIFF_NON_EXISTENT_DIR_NUMBER means 'dont know number of IFDs' |
3372 | | * 0 means 'empty file opened for writing, but no IFD written yet' */ |
3373 | 0 | if (!tif->tif_dir.td_iswrittentofile && !(tif->tif_flags & TIFF_INSUBIFD)) |
3374 | 0 | { |
3375 | 0 | tif->tif_curdircount = ndir; |
3376 | 0 | } |
3377 | 0 | return (1); |
3378 | 0 | } |
3379 | | |
3380 | | /************************************************************************/ |
3381 | | /* TIFFRewriteField() */ |
3382 | | /* */ |
3383 | | /* Rewrite a field in the directory on disk without regard to */ |
3384 | | /* updating the TIFF directory structure in memory. Currently */ |
3385 | | /* only supported for field that already exist in the on-disk */ |
3386 | | /* directory. Mainly used for updating stripoffset / */ |
3387 | | /* stripbytecount values after the directory is already on */ |
3388 | | /* disk. */ |
3389 | | /* */ |
3390 | | /* Returns zero on failure, and one on success. */ |
3391 | | /************************************************************************/ |
3392 | | |
3393 | | int _TIFFRewriteField(TIFF *tif, uint16_t tag, TIFFDataType in_datatype, |
3394 | | tmsize_t count, void *data) |
3395 | 0 | { |
3396 | 0 | static const char module[] = "TIFFResetField"; |
3397 | | /* const TIFFField* fip = NULL; */ |
3398 | 0 | uint16_t dircount; |
3399 | 0 | tmsize_t dirsize; |
3400 | 0 | uint8_t direntry_raw[20]; |
3401 | 0 | uint16_t entry_tag = 0; |
3402 | 0 | uint16_t entry_type = 0; |
3403 | 0 | uint64_t entry_count = 0; |
3404 | 0 | uint64_t entry_offset = 0; |
3405 | 0 | int value_in_entry = 0; |
3406 | 0 | uint64_t read_offset; |
3407 | 0 | uint8_t *buf_to_write = NULL; |
3408 | 0 | TIFFDataType datatype; |
3409 | | |
3410 | | /* -------------------------------------------------------------------- */ |
3411 | | /* Find field definition. */ |
3412 | | /* -------------------------------------------------------------------- */ |
3413 | 0 | /*fip =*/TIFFFindField(tif, tag, TIFF_ANY); |
3414 | | |
3415 | | /* -------------------------------------------------------------------- */ |
3416 | | /* Do some checking this is a straight forward case. */ |
3417 | | /* -------------------------------------------------------------------- */ |
3418 | 0 | if (isMapped(tif)) |
3419 | 0 | { |
3420 | 0 | TIFFErrorExtR(tif, module, |
3421 | 0 | "Memory mapped files not currently supported for " |
3422 | 0 | "this operation."); |
3423 | 0 | return 0; |
3424 | 0 | } |
3425 | | |
3426 | 0 | if (tif->tif_diroff == 0) |
3427 | 0 | { |
3428 | 0 | TIFFErrorExtR( |
3429 | 0 | tif, module, |
3430 | 0 | "Attempt to reset field on directory not already on disk."); |
3431 | 0 | return 0; |
3432 | 0 | } |
3433 | | |
3434 | | /* -------------------------------------------------------------------- */ |
3435 | | /* Read the directory entry count. */ |
3436 | | /* -------------------------------------------------------------------- */ |
3437 | 0 | if (!SeekOK(tif, tif->tif_diroff)) |
3438 | 0 | { |
3439 | 0 | TIFFErrorExtR(tif, module, "%s: Seek error accessing TIFF directory", |
3440 | 0 | tif->tif_name); |
3441 | 0 | return 0; |
3442 | 0 | } |
3443 | | |
3444 | 0 | read_offset = tif->tif_diroff; |
3445 | |
|
3446 | 0 | if (!(tif->tif_flags & TIFF_BIGTIFF)) |
3447 | 0 | { |
3448 | 0 | if (!ReadOK(tif, &dircount, sizeof(uint16_t))) |
3449 | 0 | { |
3450 | 0 | TIFFErrorExtR(tif, module, "%s: Can not read TIFF directory count", |
3451 | 0 | tif->tif_name); |
3452 | 0 | return 0; |
3453 | 0 | } |
3454 | 0 | if (tif->tif_flags & TIFF_SWAB) |
3455 | 0 | TIFFSwabShort(&dircount); |
3456 | 0 | dirsize = 12; |
3457 | 0 | read_offset += 2; |
3458 | 0 | } |
3459 | 0 | else |
3460 | 0 | { |
3461 | 0 | uint64_t dircount64; |
3462 | 0 | if (!ReadOK(tif, &dircount64, sizeof(uint64_t))) |
3463 | 0 | { |
3464 | 0 | TIFFErrorExtR(tif, module, "%s: Can not read TIFF directory count", |
3465 | 0 | tif->tif_name); |
3466 | 0 | return 0; |
3467 | 0 | } |
3468 | 0 | if (tif->tif_flags & TIFF_SWAB) |
3469 | 0 | TIFFSwabLong8(&dircount64); |
3470 | 0 | dircount = (uint16_t)dircount64; |
3471 | 0 | dirsize = 20; |
3472 | 0 | read_offset += 8; |
3473 | 0 | } |
3474 | | |
3475 | | /* -------------------------------------------------------------------- */ |
3476 | | /* Read through directory to find target tag. */ |
3477 | | /* -------------------------------------------------------------------- */ |
3478 | 0 | while (dircount > 0) |
3479 | 0 | { |
3480 | 0 | if (!ReadOK(tif, direntry_raw, dirsize)) |
3481 | 0 | { |
3482 | 0 | TIFFErrorExtR(tif, module, "%s: Can not read TIFF directory entry.", |
3483 | 0 | tif->tif_name); |
3484 | 0 | return 0; |
3485 | 0 | } |
3486 | | |
3487 | 0 | memcpy(&entry_tag, direntry_raw + 0, sizeof(uint16_t)); |
3488 | 0 | if (tif->tif_flags & TIFF_SWAB) |
3489 | 0 | TIFFSwabShort(&entry_tag); |
3490 | |
|
3491 | 0 | if (entry_tag == tag) |
3492 | 0 | break; |
3493 | | |
3494 | 0 | read_offset += dirsize; |
3495 | 0 | } |
3496 | | |
3497 | 0 | if (entry_tag != tag) |
3498 | 0 | { |
3499 | 0 | TIFFErrorExtR(tif, module, "%s: Could not find tag %" PRIu16 ".", |
3500 | 0 | tif->tif_name, tag); |
3501 | 0 | return 0; |
3502 | 0 | } |
3503 | | |
3504 | | /* -------------------------------------------------------------------- */ |
3505 | | /* Extract the type, count and offset for this entry. */ |
3506 | | /* -------------------------------------------------------------------- */ |
3507 | 0 | memcpy(&entry_type, direntry_raw + 2, sizeof(uint16_t)); |
3508 | 0 | if (tif->tif_flags & TIFF_SWAB) |
3509 | 0 | TIFFSwabShort(&entry_type); |
3510 | |
|
3511 | 0 | if (!(tif->tif_flags & TIFF_BIGTIFF)) |
3512 | 0 | { |
3513 | 0 | uint32_t value; |
3514 | |
|
3515 | 0 | memcpy(&value, direntry_raw + 4, sizeof(uint32_t)); |
3516 | 0 | if (tif->tif_flags & TIFF_SWAB) |
3517 | 0 | TIFFSwabLong(&value); |
3518 | 0 | entry_count = value; |
3519 | |
|
3520 | 0 | memcpy(&value, direntry_raw + 8, sizeof(uint32_t)); |
3521 | 0 | if (tif->tif_flags & TIFF_SWAB) |
3522 | 0 | TIFFSwabLong(&value); |
3523 | 0 | entry_offset = value; |
3524 | 0 | } |
3525 | 0 | else |
3526 | 0 | { |
3527 | 0 | memcpy(&entry_count, direntry_raw + 4, sizeof(uint64_t)); |
3528 | 0 | if (tif->tif_flags & TIFF_SWAB) |
3529 | 0 | TIFFSwabLong8(&entry_count); |
3530 | |
|
3531 | 0 | memcpy(&entry_offset, direntry_raw + 12, sizeof(uint64_t)); |
3532 | 0 | if (tif->tif_flags & TIFF_SWAB) |
3533 | 0 | TIFFSwabLong8(&entry_offset); |
3534 | 0 | } |
3535 | | |
3536 | | /* -------------------------------------------------------------------- */ |
3537 | | /* When a dummy tag was written due to TIFFDeferStrileArrayWriting() */ |
3538 | | /* -------------------------------------------------------------------- */ |
3539 | 0 | if (entry_offset == 0 && entry_count == 0 && entry_type == 0) |
3540 | 0 | { |
3541 | 0 | if (tag == TIFFTAG_TILEOFFSETS || tag == TIFFTAG_STRIPOFFSETS) |
3542 | 0 | { |
3543 | 0 | entry_type = |
3544 | 0 | (tif->tif_flags & TIFF_BIGTIFF) ? TIFF_LONG8 : TIFF_LONG; |
3545 | 0 | } |
3546 | 0 | else |
3547 | 0 | { |
3548 | 0 | int write_aslong8 = 1; |
3549 | 0 | if (count > 1 && tag == TIFFTAG_STRIPBYTECOUNTS) |
3550 | 0 | { |
3551 | 0 | write_aslong8 = WriteAsLong8(tif, TIFFStripSize64(tif)); |
3552 | 0 | } |
3553 | 0 | else if (count > 1 && tag == TIFFTAG_TILEBYTECOUNTS) |
3554 | 0 | { |
3555 | 0 | write_aslong8 = WriteAsLong8(tif, TIFFTileSize64(tif)); |
3556 | 0 | } |
3557 | 0 | if (write_aslong8) |
3558 | 0 | { |
3559 | 0 | entry_type = TIFF_LONG8; |
3560 | 0 | } |
3561 | 0 | else |
3562 | 0 | { |
3563 | 0 | int write_aslong4 = 1; |
3564 | 0 | if (count > 1 && tag == TIFFTAG_STRIPBYTECOUNTS) |
3565 | 0 | { |
3566 | 0 | write_aslong4 = WriteAsLong4(tif, TIFFStripSize64(tif)); |
3567 | 0 | } |
3568 | 0 | else if (count > 1 && tag == TIFFTAG_TILEBYTECOUNTS) |
3569 | 0 | { |
3570 | 0 | write_aslong4 = WriteAsLong4(tif, TIFFTileSize64(tif)); |
3571 | 0 | } |
3572 | 0 | if (write_aslong4) |
3573 | 0 | { |
3574 | 0 | entry_type = TIFF_LONG; |
3575 | 0 | } |
3576 | 0 | else |
3577 | 0 | { |
3578 | 0 | entry_type = TIFF_SHORT; |
3579 | 0 | } |
3580 | 0 | } |
3581 | 0 | } |
3582 | 0 | } |
3583 | | |
3584 | | /* -------------------------------------------------------------------- */ |
3585 | | /* What data type do we want to write this as? */ |
3586 | | /* -------------------------------------------------------------------- */ |
3587 | 0 | if (TIFFDataWidth(in_datatype) == 8 && !(tif->tif_flags & TIFF_BIGTIFF)) |
3588 | 0 | { |
3589 | 0 | if (in_datatype == TIFF_LONG8) |
3590 | 0 | datatype = entry_type == TIFF_SHORT ? TIFF_SHORT : TIFF_LONG; |
3591 | 0 | else if (in_datatype == TIFF_SLONG8) |
3592 | 0 | datatype = TIFF_SLONG; |
3593 | 0 | else if (in_datatype == TIFF_IFD8) |
3594 | 0 | datatype = TIFF_IFD; |
3595 | 0 | else |
3596 | 0 | datatype = in_datatype; |
3597 | 0 | } |
3598 | 0 | else |
3599 | 0 | { |
3600 | 0 | if (in_datatype == TIFF_LONG8 && |
3601 | 0 | (entry_type == TIFF_SHORT || entry_type == TIFF_LONG || |
3602 | 0 | entry_type == TIFF_LONG8)) |
3603 | 0 | datatype = (TIFFDataType)entry_type; |
3604 | 0 | else if (in_datatype == TIFF_SLONG8 && |
3605 | 0 | (entry_type == TIFF_SLONG || entry_type == TIFF_SLONG8)) |
3606 | 0 | datatype = (TIFFDataType)entry_type; |
3607 | 0 | else if (in_datatype == TIFF_IFD8 && |
3608 | 0 | (entry_type == TIFF_IFD || entry_type == TIFF_IFD8)) |
3609 | 0 | datatype = (TIFFDataType)entry_type; |
3610 | 0 | else |
3611 | 0 | datatype = in_datatype; |
3612 | 0 | } |
3613 | | |
3614 | | /* -------------------------------------------------------------------- */ |
3615 | | /* Prepare buffer of actual data to write. This includes */ |
3616 | | /* swabbing as needed. */ |
3617 | | /* -------------------------------------------------------------------- */ |
3618 | 0 | buf_to_write = (uint8_t *)_TIFFCheckMalloc( |
3619 | 0 | tif, count, TIFFDataWidth(datatype), "for field buffer."); |
3620 | 0 | if (!buf_to_write) |
3621 | 0 | return 0; |
3622 | | |
3623 | 0 | if (datatype == in_datatype) |
3624 | 0 | memcpy(buf_to_write, data, count * TIFFDataWidth(datatype)); |
3625 | 0 | else if (datatype == TIFF_SLONG && in_datatype == TIFF_SLONG8) |
3626 | 0 | { |
3627 | 0 | tmsize_t i; |
3628 | |
|
3629 | 0 | for (i = 0; i < count; i++) |
3630 | 0 | { |
3631 | 0 | ((int32_t *)buf_to_write)[i] = (int32_t)((int64_t *)data)[i]; |
3632 | 0 | if ((int64_t)((int32_t *)buf_to_write)[i] != ((int64_t *)data)[i]) |
3633 | 0 | { |
3634 | 0 | _TIFFfreeExt(tif, buf_to_write); |
3635 | 0 | TIFFErrorExtR(tif, module, |
3636 | 0 | "Value exceeds 32bit range of output type."); |
3637 | 0 | return 0; |
3638 | 0 | } |
3639 | 0 | } |
3640 | 0 | } |
3641 | 0 | else if ((datatype == TIFF_LONG && in_datatype == TIFF_LONG8) || |
3642 | 0 | (datatype == TIFF_IFD && in_datatype == TIFF_IFD8)) |
3643 | 0 | { |
3644 | 0 | tmsize_t i; |
3645 | |
|
3646 | 0 | for (i = 0; i < count; i++) |
3647 | 0 | { |
3648 | 0 | ((uint32_t *)buf_to_write)[i] = (uint32_t)((uint64_t *)data)[i]; |
3649 | 0 | if ((uint64_t)((uint32_t *)buf_to_write)[i] != |
3650 | 0 | ((uint64_t *)data)[i]) |
3651 | 0 | { |
3652 | 0 | _TIFFfreeExt(tif, buf_to_write); |
3653 | 0 | TIFFErrorExtR(tif, module, |
3654 | 0 | "Value exceeds 32bit range of output type."); |
3655 | 0 | return 0; |
3656 | 0 | } |
3657 | 0 | } |
3658 | 0 | } |
3659 | 0 | else if (datatype == TIFF_SHORT && in_datatype == TIFF_LONG8) |
3660 | 0 | { |
3661 | 0 | tmsize_t i; |
3662 | |
|
3663 | 0 | for (i = 0; i < count; i++) |
3664 | 0 | { |
3665 | 0 | ((uint16_t *)buf_to_write)[i] = (uint16_t)((uint64_t *)data)[i]; |
3666 | 0 | if ((uint64_t)((uint16_t *)buf_to_write)[i] != |
3667 | 0 | ((uint64_t *)data)[i]) |
3668 | 0 | { |
3669 | 0 | _TIFFfreeExt(tif, buf_to_write); |
3670 | 0 | TIFFErrorExtR(tif, module, |
3671 | 0 | "Value exceeds 16bit range of output type."); |
3672 | 0 | return 0; |
3673 | 0 | } |
3674 | 0 | } |
3675 | 0 | } |
3676 | 0 | else |
3677 | 0 | { |
3678 | 0 | TIFFErrorExtR(tif, module, "Unhandled type conversion."); |
3679 | 0 | return 0; |
3680 | 0 | } |
3681 | | |
3682 | 0 | if (TIFFDataWidth(datatype) > 1 && (tif->tif_flags & TIFF_SWAB)) |
3683 | 0 | { |
3684 | 0 | if (TIFFDataWidth(datatype) == 2) |
3685 | 0 | TIFFSwabArrayOfShort((uint16_t *)buf_to_write, count); |
3686 | 0 | else if (TIFFDataWidth(datatype) == 4) |
3687 | 0 | TIFFSwabArrayOfLong((uint32_t *)buf_to_write, count); |
3688 | 0 | else if (TIFFDataWidth(datatype) == 8) |
3689 | 0 | TIFFSwabArrayOfLong8((uint64_t *)buf_to_write, count); |
3690 | 0 | } |
3691 | | |
3692 | | /* -------------------------------------------------------------------- */ |
3693 | | /* Is this a value that fits into the directory entry? */ |
3694 | | /* -------------------------------------------------------------------- */ |
3695 | 0 | if (!(tif->tif_flags & TIFF_BIGTIFF)) |
3696 | 0 | { |
3697 | 0 | if (TIFFDataWidth(datatype) * count <= 4) |
3698 | 0 | { |
3699 | 0 | entry_offset = read_offset + 8; |
3700 | 0 | value_in_entry = 1; |
3701 | 0 | } |
3702 | 0 | } |
3703 | 0 | else |
3704 | 0 | { |
3705 | 0 | if (TIFFDataWidth(datatype) * count <= 8) |
3706 | 0 | { |
3707 | 0 | entry_offset = read_offset + 12; |
3708 | 0 | value_in_entry = 1; |
3709 | 0 | } |
3710 | 0 | } |
3711 | |
|
3712 | 0 | if ((tag == TIFFTAG_TILEOFFSETS || tag == TIFFTAG_STRIPOFFSETS) && |
3713 | 0 | tif->tif_dir.td_stripoffset_entry.tdir_count == 0 && |
3714 | 0 | tif->tif_dir.td_stripoffset_entry.tdir_type == 0 && |
3715 | 0 | tif->tif_dir.td_stripoffset_entry.tdir_offset.toff_long8 == 0) |
3716 | 0 | { |
3717 | 0 | tif->tif_dir.td_stripoffset_entry.tdir_type = datatype; |
3718 | 0 | tif->tif_dir.td_stripoffset_entry.tdir_count = count; |
3719 | 0 | } |
3720 | 0 | else if ((tag == TIFFTAG_TILEBYTECOUNTS || |
3721 | 0 | tag == TIFFTAG_STRIPBYTECOUNTS) && |
3722 | 0 | tif->tif_dir.td_stripbytecount_entry.tdir_count == 0 && |
3723 | 0 | tif->tif_dir.td_stripbytecount_entry.tdir_type == 0 && |
3724 | 0 | tif->tif_dir.td_stripbytecount_entry.tdir_offset.toff_long8 == 0) |
3725 | 0 | { |
3726 | 0 | tif->tif_dir.td_stripbytecount_entry.tdir_type = datatype; |
3727 | 0 | tif->tif_dir.td_stripbytecount_entry.tdir_count = count; |
3728 | 0 | } |
3729 | | |
3730 | | /* -------------------------------------------------------------------- */ |
3731 | | /* If the tag type, and count match, then we just write it out */ |
3732 | | /* over the old values without altering the directory entry at */ |
3733 | | /* all. */ |
3734 | | /* -------------------------------------------------------------------- */ |
3735 | 0 | if (entry_count == (uint64_t)count && entry_type == (uint16_t)datatype) |
3736 | 0 | { |
3737 | 0 | if (!SeekOK(tif, entry_offset)) |
3738 | 0 | { |
3739 | 0 | _TIFFfreeExt(tif, buf_to_write); |
3740 | 0 | TIFFErrorExtR(tif, module, |
3741 | 0 | "%s: Seek error accessing TIFF directory", |
3742 | 0 | tif->tif_name); |
3743 | 0 | return 0; |
3744 | 0 | } |
3745 | 0 | if (!WriteOK(tif, buf_to_write, count * TIFFDataWidth(datatype))) |
3746 | 0 | { |
3747 | 0 | _TIFFfreeExt(tif, buf_to_write); |
3748 | 0 | TIFFErrorExtR(tif, module, "Error writing directory link"); |
3749 | 0 | return (0); |
3750 | 0 | } |
3751 | | |
3752 | 0 | _TIFFfreeExt(tif, buf_to_write); |
3753 | 0 | return 1; |
3754 | 0 | } |
3755 | | |
3756 | | /* -------------------------------------------------------------------- */ |
3757 | | /* Otherwise, we write the new tag data at the end of the file. */ |
3758 | | /* -------------------------------------------------------------------- */ |
3759 | 0 | if (!value_in_entry) |
3760 | 0 | { |
3761 | 0 | entry_offset = TIFFSeekFile(tif, 0, SEEK_END); |
3762 | |
|
3763 | 0 | if (!WriteOK(tif, buf_to_write, count * TIFFDataWidth(datatype))) |
3764 | 0 | { |
3765 | 0 | _TIFFfreeExt(tif, buf_to_write); |
3766 | 0 | TIFFErrorExtR(tif, module, "Error writing directory link"); |
3767 | 0 | return (0); |
3768 | 0 | } |
3769 | 0 | } |
3770 | 0 | else |
3771 | 0 | { |
3772 | 0 | if (count * TIFFDataWidth(datatype) == 4) |
3773 | 0 | { |
3774 | 0 | uint32_t value; |
3775 | 0 | memcpy(&value, buf_to_write, count * TIFFDataWidth(datatype)); |
3776 | 0 | entry_offset = value; |
3777 | 0 | } |
3778 | 0 | else |
3779 | 0 | { |
3780 | 0 | memcpy(&entry_offset, buf_to_write, |
3781 | 0 | count * TIFFDataWidth(datatype)); |
3782 | 0 | } |
3783 | 0 | } |
3784 | | |
3785 | 0 | _TIFFfreeExt(tif, buf_to_write); |
3786 | 0 | buf_to_write = 0; |
3787 | | |
3788 | | /* -------------------------------------------------------------------- */ |
3789 | | /* Adjust the directory entry. */ |
3790 | | /* -------------------------------------------------------------------- */ |
3791 | 0 | entry_type = datatype; |
3792 | 0 | entry_count = (uint64_t)count; |
3793 | 0 | memcpy(direntry_raw + 2, &entry_type, sizeof(uint16_t)); |
3794 | 0 | if (tif->tif_flags & TIFF_SWAB) |
3795 | 0 | TIFFSwabShort((uint16_t *)(direntry_raw + 2)); |
3796 | |
|
3797 | 0 | if (!(tif->tif_flags & TIFF_BIGTIFF)) |
3798 | 0 | { |
3799 | 0 | uint32_t value; |
3800 | |
|
3801 | 0 | value = (uint32_t)entry_count; |
3802 | 0 | memcpy(direntry_raw + 4, &value, sizeof(uint32_t)); |
3803 | 0 | if (tif->tif_flags & TIFF_SWAB) |
3804 | 0 | TIFFSwabLong((uint32_t *)(direntry_raw + 4)); |
3805 | |
|
3806 | 0 | value = (uint32_t)entry_offset; |
3807 | 0 | memcpy(direntry_raw + 8, &value, sizeof(uint32_t)); |
3808 | 0 | if (tif->tif_flags & TIFF_SWAB) |
3809 | 0 | TIFFSwabLong((uint32_t *)(direntry_raw + 8)); |
3810 | 0 | } |
3811 | 0 | else |
3812 | 0 | { |
3813 | 0 | memcpy(direntry_raw + 4, &entry_count, sizeof(uint64_t)); |
3814 | 0 | if (tif->tif_flags & TIFF_SWAB) |
3815 | 0 | TIFFSwabLong8((uint64_t *)(direntry_raw + 4)); |
3816 | |
|
3817 | 0 | memcpy(direntry_raw + 12, &entry_offset, sizeof(uint64_t)); |
3818 | 0 | if (tif->tif_flags & TIFF_SWAB) |
3819 | 0 | TIFFSwabLong8((uint64_t *)(direntry_raw + 12)); |
3820 | 0 | } |
3821 | | |
3822 | | /* -------------------------------------------------------------------- */ |
3823 | | /* Write the directory entry out to disk. */ |
3824 | | /* -------------------------------------------------------------------- */ |
3825 | 0 | if (!SeekOK(tif, read_offset)) |
3826 | 0 | { |
3827 | 0 | TIFFErrorExtR(tif, module, "%s: Seek error accessing TIFF directory", |
3828 | 0 | tif->tif_name); |
3829 | 0 | return 0; |
3830 | 0 | } |
3831 | | |
3832 | 0 | if (!WriteOK(tif, direntry_raw, dirsize)) |
3833 | 0 | { |
3834 | 0 | TIFFErrorExtR(tif, module, "%s: Can not write TIFF directory entry.", |
3835 | 0 | tif->tif_name); |
3836 | 0 | return 0; |
3837 | 0 | } |
3838 | | |
3839 | 0 | return 1; |
3840 | 0 | } |