1 /*
2 +----------------------------------------------------------------------+
3 | PHP Version 7 |
4 +----------------------------------------------------------------------+
5 | Copyright (c) 1997-2018 The PHP Group |
6 +----------------------------------------------------------------------+
7 | This source file is subject to version 3.01 of the PHP license, |
8 | that is bundled with this package in the file LICENSE, and is |
9 | available through the world-wide-web at the following url: |
10 | http://www.php.net/license/3_01.txt |
11 | If you did not receive a copy of the PHP license and are unable to |
12 | obtain it through the world-wide-web, please send a note to |
13 | license@php.net so we can mail you a copy immediately. |
14 +----------------------------------------------------------------------+
15 | Authors: Rasmus Lerdorf <rasmus@php.net> |
16 | Marcus Boerger <helly@php.net> |
17 +----------------------------------------------------------------------+
18 */
19
20 #include "php.h"
21 #include <stdio.h>
22 #if HAVE_FCNTL_H
23 #include <fcntl.h>
24 #endif
25 #include "fopen_wrappers.h"
26 #include "ext/standard/fsock.h"
27 #if HAVE_UNISTD_H
28 #include <unistd.h>
29 #endif
30 #include "php_image.h"
31 #ifdef PHP_WIN32
32 #include "win32/php_stdint.h"
33 #endif
34
35 #if HAVE_ZLIB && !defined(COMPILE_DL_ZLIB)
36 #include "zlib.h"
37 #endif
38
39 /* file type markers */
40 PHPAPI const char php_sig_gif[3] = {'G', 'I', 'F'};
41 PHPAPI const char php_sig_psd[4] = {'8', 'B', 'P', 'S'};
42 PHPAPI const char php_sig_bmp[2] = {'B', 'M'};
43 PHPAPI const char php_sig_swf[3] = {'F', 'W', 'S'};
44 PHPAPI const char php_sig_swc[3] = {'C', 'W', 'S'};
45 PHPAPI const char php_sig_jpg[3] = {(char) 0xff, (char) 0xd8, (char) 0xff};
46 PHPAPI const char php_sig_png[8] = {(char) 0x89, (char) 0x50, (char) 0x4e, (char) 0x47,
47 (char) 0x0d, (char) 0x0a, (char) 0x1a, (char) 0x0a};
48 PHPAPI const char php_sig_tif_ii[4] = {'I','I', (char)0x2A, (char)0x00};
49 PHPAPI const char php_sig_tif_mm[4] = {'M','M', (char)0x00, (char)0x2A};
50 PHPAPI const char php_sig_jpc[3] = {(char)0xff, (char)0x4f, (char)0xff};
51 PHPAPI const char php_sig_jp2[12] = {(char)0x00, (char)0x00, (char)0x00, (char)0x0c,
52 (char)0x6a, (char)0x50, (char)0x20, (char)0x20,
53 (char)0x0d, (char)0x0a, (char)0x87, (char)0x0a};
54 PHPAPI const char php_sig_iff[4] = {'F','O','R','M'};
55 PHPAPI const char php_sig_ico[4] = {(char)0x00, (char)0x00, (char)0x01, (char)0x00};
56 PHPAPI const char php_sig_riff[4] = {'R', 'I', 'F', 'F'};
57 PHPAPI const char php_sig_webp[4] = {'W', 'E', 'B', 'P'};
58
59 /* REMEMBER TO ADD MIME-TYPE TO FUNCTION php_image_type_to_mime_type */
60 /* PCX must check first 64bytes and byte 0=0x0a and byte2 < 0x06 */
61
62 /* return info as a struct, to make expansion easier */
63
64 struct gfxinfo {
65 unsigned int width;
66 unsigned int height;
67 unsigned int bits;
68 unsigned int channels;
69 };
70
71 /* {{{ PHP_MINIT_FUNCTION(imagetypes)
72 * Register IMAGETYPE_<xxx> constants used by GetImageSize(), image_type_to_mime_type, ext/exif */
PHP_MINIT_FUNCTION(imagetypes)73 PHP_MINIT_FUNCTION(imagetypes)
74 {
75 REGISTER_LONG_CONSTANT("IMAGETYPE_GIF", IMAGE_FILETYPE_GIF, CONST_CS | CONST_PERSISTENT);
76 REGISTER_LONG_CONSTANT("IMAGETYPE_JPEG", IMAGE_FILETYPE_JPEG, CONST_CS | CONST_PERSISTENT);
77 REGISTER_LONG_CONSTANT("IMAGETYPE_PNG", IMAGE_FILETYPE_PNG, CONST_CS | CONST_PERSISTENT);
78 REGISTER_LONG_CONSTANT("IMAGETYPE_SWF", IMAGE_FILETYPE_SWF, CONST_CS | CONST_PERSISTENT);
79 REGISTER_LONG_CONSTANT("IMAGETYPE_PSD", IMAGE_FILETYPE_PSD, CONST_CS | CONST_PERSISTENT);
80 REGISTER_LONG_CONSTANT("IMAGETYPE_BMP", IMAGE_FILETYPE_BMP, CONST_CS | CONST_PERSISTENT);
81 REGISTER_LONG_CONSTANT("IMAGETYPE_TIFF_II", IMAGE_FILETYPE_TIFF_II, CONST_CS | CONST_PERSISTENT);
82 REGISTER_LONG_CONSTANT("IMAGETYPE_TIFF_MM", IMAGE_FILETYPE_TIFF_MM, CONST_CS | CONST_PERSISTENT);
83 REGISTER_LONG_CONSTANT("IMAGETYPE_JPC", IMAGE_FILETYPE_JPC, CONST_CS | CONST_PERSISTENT);
84 REGISTER_LONG_CONSTANT("IMAGETYPE_JP2", IMAGE_FILETYPE_JP2, CONST_CS | CONST_PERSISTENT);
85 REGISTER_LONG_CONSTANT("IMAGETYPE_JPX", IMAGE_FILETYPE_JPX, CONST_CS | CONST_PERSISTENT);
86 REGISTER_LONG_CONSTANT("IMAGETYPE_JB2", IMAGE_FILETYPE_JB2, CONST_CS | CONST_PERSISTENT);
87 #if HAVE_ZLIB && !defined(COMPILE_DL_ZLIB)
88 REGISTER_LONG_CONSTANT("IMAGETYPE_SWC", IMAGE_FILETYPE_SWC, CONST_CS | CONST_PERSISTENT);
89 #endif
90 REGISTER_LONG_CONSTANT("IMAGETYPE_IFF", IMAGE_FILETYPE_IFF, CONST_CS | CONST_PERSISTENT);
91 REGISTER_LONG_CONSTANT("IMAGETYPE_WBMP", IMAGE_FILETYPE_WBMP, CONST_CS | CONST_PERSISTENT);
92 REGISTER_LONG_CONSTANT("IMAGETYPE_JPEG2000",IMAGE_FILETYPE_JPC, CONST_CS | CONST_PERSISTENT); /* keep alias */
93 REGISTER_LONG_CONSTANT("IMAGETYPE_XBM", IMAGE_FILETYPE_XBM, CONST_CS | CONST_PERSISTENT);
94 REGISTER_LONG_CONSTANT("IMAGETYPE_ICO", IMAGE_FILETYPE_ICO, CONST_CS | CONST_PERSISTENT);
95 REGISTER_LONG_CONSTANT("IMAGETYPE_WEBP", IMAGE_FILETYPE_WEBP, CONST_CS | CONST_PERSISTENT);
96 REGISTER_LONG_CONSTANT("IMAGETYPE_UNKNOWN", IMAGE_FILETYPE_UNKNOWN, CONST_CS | CONST_PERSISTENT);
97 REGISTER_LONG_CONSTANT("IMAGETYPE_COUNT", IMAGE_FILETYPE_COUNT, CONST_CS | CONST_PERSISTENT);
98 return SUCCESS;
99 }
100 /* }}} */
101
102 /* {{{ php_handle_gif
103 * routine to handle GIF files. If only everything were that easy... ;} */
php_handle_gif(php_stream * stream)104 static struct gfxinfo *php_handle_gif (php_stream * stream)
105 {
106 struct gfxinfo *result = NULL;
107 unsigned char dim[5];
108
109 if (php_stream_seek(stream, 3, SEEK_CUR))
110 return NULL;
111
112 if (php_stream_read(stream, (char*)dim, sizeof(dim)) != sizeof(dim))
113 return NULL;
114
115 result = (struct gfxinfo *) ecalloc(1, sizeof(struct gfxinfo));
116 result->width = (unsigned int)dim[0] | (((unsigned int)dim[1])<<8);
117 result->height = (unsigned int)dim[2] | (((unsigned int)dim[3])<<8);
118 result->bits = dim[4]&0x80 ? ((((unsigned int)dim[4])&0x07) + 1) : 0;
119 result->channels = 3; /* always */
120
121 return result;
122 }
123 /* }}} */
124
125 /* {{{ php_handle_psd
126 */
php_handle_psd(php_stream * stream)127 static struct gfxinfo *php_handle_psd (php_stream * stream)
128 {
129 struct gfxinfo *result = NULL;
130 unsigned char dim[8];
131
132 if (php_stream_seek(stream, 11, SEEK_CUR))
133 return NULL;
134
135 if (php_stream_read(stream, (char*)dim, sizeof(dim)) != sizeof(dim))
136 return NULL;
137
138 result = (struct gfxinfo *) ecalloc(1, sizeof(struct gfxinfo));
139 result->height = (((unsigned int)dim[0]) << 24) + (((unsigned int)dim[1]) << 16) + (((unsigned int)dim[2]) << 8) + ((unsigned int)dim[3]);
140 result->width = (((unsigned int)dim[4]) << 24) + (((unsigned int)dim[5]) << 16) + (((unsigned int)dim[6]) << 8) + ((unsigned int)dim[7]);
141
142 return result;
143 }
144 /* }}} */
145
146 /* {{{ php_handle_bmp
147 */
php_handle_bmp(php_stream * stream)148 static struct gfxinfo *php_handle_bmp (php_stream * stream)
149 {
150 struct gfxinfo *result = NULL;
151 unsigned char dim[16];
152 int size;
153
154 if (php_stream_seek(stream, 11, SEEK_CUR))
155 return NULL;
156
157 if (php_stream_read(stream, (char*)dim, sizeof(dim)) != sizeof(dim))
158 return NULL;
159
160 size = (((unsigned int)dim[ 3]) << 24) + (((unsigned int)dim[ 2]) << 16) + (((unsigned int)dim[ 1]) << 8) + ((unsigned int) dim[ 0]);
161 if (size == 12) {
162 result = (struct gfxinfo *) ecalloc (1, sizeof(struct gfxinfo));
163 result->width = (((unsigned int)dim[ 5]) << 8) + ((unsigned int) dim[ 4]);
164 result->height = (((unsigned int)dim[ 7]) << 8) + ((unsigned int) dim[ 6]);
165 result->bits = ((unsigned int)dim[11]);
166 } else if (size > 12 && (size <= 64 || size == 108 || size == 124)) {
167 result = (struct gfxinfo *) ecalloc (1, sizeof(struct gfxinfo));
168 result->width = (((unsigned int)dim[ 7]) << 24) + (((unsigned int)dim[ 6]) << 16) + (((unsigned int)dim[ 5]) << 8) + ((unsigned int) dim[ 4]);
169 result->height = (((unsigned int)dim[11]) << 24) + (((unsigned int)dim[10]) << 16) + (((unsigned int)dim[ 9]) << 8) + ((unsigned int) dim[ 8]);
170 result->height = abs((int32_t)result->height);
171 result->bits = (((unsigned int)dim[15]) << 8) + ((unsigned int)dim[14]);
172 } else {
173 return NULL;
174 }
175
176 return result;
177 }
178 /* }}} */
179
180 /* {{{ php_swf_get_bits
181 * routines to handle SWF files. */
php_swf_get_bits(unsigned char * buffer,unsigned int pos,unsigned int count)182 static unsigned long int php_swf_get_bits (unsigned char* buffer, unsigned int pos, unsigned int count)
183 {
184 unsigned int loop;
185 unsigned long int result = 0;
186
187 for (loop = pos; loop < pos + count; loop++)
188 {
189 result = result +
190 ((((buffer[loop / 8]) >> (7 - (loop % 8))) & 0x01) << (count - (loop - pos) - 1));
191 }
192 return result;
193 }
194 /* }}} */
195
196 #if HAVE_ZLIB && !defined(COMPILE_DL_ZLIB)
197 /* {{{ php_handle_swc
198 */
php_handle_swc(php_stream * stream)199 static struct gfxinfo *php_handle_swc(php_stream * stream)
200 {
201 struct gfxinfo *result = NULL;
202
203 long bits;
204 unsigned char a[64];
205 unsigned long len=64, szlength;
206 int factor = 1,maxfactor = 16;
207 int status = 0;
208 unsigned char *b, *buf = NULL;
209 zend_string *bufz;
210
211 if (php_stream_seek(stream, 5, SEEK_CUR)) {
212 return NULL;
213 }
214
215 if (php_stream_read(stream, (char *) a, sizeof(a)) != sizeof(a)) {
216 return NULL;
217 }
218
219 b = ecalloc(1, len + 1);
220
221 if (uncompress(b, &len, a, sizeof(a)) != Z_OK) {
222 /* failed to decompress the file, will try reading the rest of the file */
223 if (php_stream_seek(stream, 8, SEEK_SET)) {
224 efree(b);
225 return NULL;
226 }
227
228 bufz = php_stream_copy_to_mem(stream, PHP_STREAM_COPY_ALL, 0);
229
230 if (!bufz) {
231 efree(b);
232 return NULL;
233 }
234
235 /*
236 * zlib::uncompress() wants to know the output data length
237 * if none was given as a parameter
238 * we try from input length * 2 up to input length * 2^8
239 * doubling it whenever it wasn't big enough
240 * that should be eneugh for all real life cases
241 */
242
243 do {
244 szlength = ZSTR_LEN(bufz) * (1<<factor++);
245 buf = erealloc(buf, szlength);
246 status = uncompress(buf, &szlength, (unsigned char *) ZSTR_VAL(bufz), ZSTR_LEN(bufz));
247 } while ((status==Z_BUF_ERROR)&&(factor<maxfactor));
248
249 if (bufz) {
250 zend_string_release_ex(bufz, 0);
251 }
252
253 if (status == Z_OK) {
254 memcpy(b, buf, len);
255 }
256
257 if (buf) {
258 efree(buf);
259 }
260 }
261
262 if (!status) {
263 result = (struct gfxinfo *) ecalloc (1, sizeof (struct gfxinfo));
264 bits = php_swf_get_bits (b, 0, 5);
265 result->width = (php_swf_get_bits (b, 5 + bits, bits) -
266 php_swf_get_bits (b, 5, bits)) / 20;
267 result->height = (php_swf_get_bits (b, 5 + (3 * bits), bits) -
268 php_swf_get_bits (b, 5 + (2 * bits), bits)) / 20;
269 } else {
270 result = NULL;
271 }
272
273 efree (b);
274 return result;
275 }
276 /* }}} */
277 #endif
278
279 /* {{{ php_handle_swf
280 */
php_handle_swf(php_stream * stream)281 static struct gfxinfo *php_handle_swf (php_stream * stream)
282 {
283 struct gfxinfo *result = NULL;
284 long bits;
285 unsigned char a[32];
286
287 if (php_stream_seek(stream, 5, SEEK_CUR))
288 return NULL;
289
290 if (php_stream_read(stream, (char*)a, sizeof(a)) != sizeof(a))
291 return NULL;
292
293 result = (struct gfxinfo *) ecalloc (1, sizeof (struct gfxinfo));
294 bits = php_swf_get_bits (a, 0, 5);
295 result->width = (php_swf_get_bits (a, 5 + bits, bits) -
296 php_swf_get_bits (a, 5, bits)) / 20;
297 result->height = (php_swf_get_bits (a, 5 + (3 * bits), bits) -
298 php_swf_get_bits (a, 5 + (2 * bits), bits)) / 20;
299 result->bits = 0;
300 result->channels = 0;
301 return result;
302 }
303 /* }}} */
304
305 /* {{{ php_handle_png
306 * routine to handle PNG files */
php_handle_png(php_stream * stream)307 static struct gfxinfo *php_handle_png (php_stream * stream)
308 {
309 struct gfxinfo *result = NULL;
310 unsigned char dim[9];
311 /* Width: 4 bytes
312 * Height: 4 bytes
313 * Bit depth: 1 byte
314 * Color type: 1 byte
315 * Compression method: 1 byte
316 * Filter method: 1 byte
317 * Interlace method: 1 byte
318 */
319
320 if (php_stream_seek(stream, 8, SEEK_CUR))
321 return NULL;
322
323 if((php_stream_read(stream, (char*)dim, sizeof(dim))) < sizeof(dim))
324 return NULL;
325
326 result = (struct gfxinfo *) ecalloc(1, sizeof(struct gfxinfo));
327 result->width = (((unsigned int)dim[0]) << 24) + (((unsigned int)dim[1]) << 16) + (((unsigned int)dim[2]) << 8) + ((unsigned int)dim[3]);
328 result->height = (((unsigned int)dim[4]) << 24) + (((unsigned int)dim[5]) << 16) + (((unsigned int)dim[6]) << 8) + ((unsigned int)dim[7]);
329 result->bits = (unsigned int)dim[8];
330 return result;
331 }
332 /* }}} */
333
334 /* routines to handle JPEG data */
335
336 /* some defines for the different JPEG block types */
337 #define M_SOF0 0xC0 /* Start Of Frame N */
338 #define M_SOF1 0xC1 /* N indicates which compression process */
339 #define M_SOF2 0xC2 /* Only SOF0-SOF2 are now in common use */
340 #define M_SOF3 0xC3
341 #define M_SOF5 0xC5 /* NB: codes C4 and CC are NOT SOF markers */
342 #define M_SOF6 0xC6
343 #define M_SOF7 0xC7
344 #define M_SOF9 0xC9
345 #define M_SOF10 0xCA
346 #define M_SOF11 0xCB
347 #define M_SOF13 0xCD
348 #define M_SOF14 0xCE
349 #define M_SOF15 0xCF
350 #define M_SOI 0xD8
351 #define M_EOI 0xD9 /* End Of Image (end of datastream) */
352 #define M_SOS 0xDA /* Start Of Scan (begins compressed data) */
353 #define M_APP0 0xe0
354 #define M_APP1 0xe1
355 #define M_APP2 0xe2
356 #define M_APP3 0xe3
357 #define M_APP4 0xe4
358 #define M_APP5 0xe5
359 #define M_APP6 0xe6
360 #define M_APP7 0xe7
361 #define M_APP8 0xe8
362 #define M_APP9 0xe9
363 #define M_APP10 0xea
364 #define M_APP11 0xeb
365 #define M_APP12 0xec
366 #define M_APP13 0xed
367 #define M_APP14 0xee
368 #define M_APP15 0xef
369 #define M_COM 0xFE /* COMment */
370
371 #define M_PSEUDO 0xFFD8 /* pseudo marker for start of image(byte 0) */
372
373 /* {{{ php_read2
374 */
php_read2(php_stream * stream)375 static unsigned short php_read2(php_stream * stream)
376 {
377 unsigned char a[2];
378
379 /* return 0 if we couldn't read enough data */
380 if((php_stream_read(stream, (char *) a, sizeof(a))) < sizeof(a)) return 0;
381
382 return (((unsigned short)a[0]) << 8) + ((unsigned short)a[1]);
383 }
384 /* }}} */
385
386 /* {{{ php_next_marker
387 * get next marker byte from file */
php_next_marker(php_stream * stream,int last_marker,int ff_read)388 static unsigned int php_next_marker(php_stream * stream, int last_marker, int ff_read)
389 {
390 int a=0, marker;
391
392 /* get marker byte, swallowing possible padding */
393 if (!ff_read) {
394 size_t extraneous = 0;
395
396 while ((marker = php_stream_getc(stream)) != 0xff) {
397 if (marker == EOF) {
398 return M_EOI;/* we hit EOF */
399 }
400 extraneous++;
401 }
402 if (extraneous) {
403 php_error_docref(NULL, E_WARNING, "corrupt JPEG data: %zu extraneous bytes before marker", extraneous);
404 }
405 }
406 a = 1;
407 do {
408 if ((marker = php_stream_getc(stream)) == EOF)
409 {
410 return M_EOI;/* we hit EOF */
411 }
412 a++;
413 } while (marker == 0xff);
414 if (a < 2)
415 {
416 return M_EOI; /* at least one 0xff is needed before marker code */
417 }
418 return (unsigned int)marker;
419 }
420 /* }}} */
421
422 /* {{{ php_skip_variable
423 * skip over a variable-length block; assumes proper length marker */
php_skip_variable(php_stream * stream)424 static int php_skip_variable(php_stream * stream)
425 {
426 zend_off_t length = ((unsigned int)php_read2(stream));
427
428 if (length < 2) {
429 return 0;
430 }
431 length = length - 2;
432 php_stream_seek(stream, (zend_long)length, SEEK_CUR);
433 return 1;
434 }
435 /* }}} */
436
437 /* {{{ php_read_APP
438 */
php_read_APP(php_stream * stream,unsigned int marker,zval * info)439 static int php_read_APP(php_stream * stream, unsigned int marker, zval *info)
440 {
441 unsigned short length;
442 char *buffer;
443 char markername[16];
444 zval *tmp;
445
446 length = php_read2(stream);
447 if (length < 2) {
448 return 0;
449 }
450 length -= 2; /* length includes itself */
451
452 buffer = emalloc(length);
453
454 if (php_stream_read(stream, buffer, (zend_long) length) != length) {
455 efree(buffer);
456 return 0;
457 }
458
459 snprintf(markername, sizeof(markername), "APP%d", marker - M_APP0);
460
461 if ((tmp = zend_hash_str_find(Z_ARRVAL_P(info), markername, strlen(markername))) == NULL) {
462 /* XXX we only catch the 1st tag of it's kind! */
463 add_assoc_stringl(info, markername, buffer, length);
464 }
465
466 efree(buffer);
467 return 1;
468 }
469 /* }}} */
470
471 /* {{{ php_handle_jpeg
472 main loop to parse JPEG structure */
php_handle_jpeg(php_stream * stream,zval * info)473 static struct gfxinfo *php_handle_jpeg (php_stream * stream, zval *info)
474 {
475 struct gfxinfo *result = NULL;
476 unsigned int marker = M_PSEUDO;
477 unsigned short length, ff_read=1;
478
479 for (;;) {
480 marker = php_next_marker(stream, marker, ff_read);
481 ff_read = 0;
482 switch (marker) {
483 case M_SOF0:
484 case M_SOF1:
485 case M_SOF2:
486 case M_SOF3:
487 case M_SOF5:
488 case M_SOF6:
489 case M_SOF7:
490 case M_SOF9:
491 case M_SOF10:
492 case M_SOF11:
493 case M_SOF13:
494 case M_SOF14:
495 case M_SOF15:
496 if (result == NULL) {
497 /* handle SOFn block */
498 result = (struct gfxinfo *) ecalloc(1, sizeof(struct gfxinfo));
499 length = php_read2(stream);
500 result->bits = php_stream_getc(stream);
501 result->height = php_read2(stream);
502 result->width = php_read2(stream);
503 result->channels = php_stream_getc(stream);
504 if (!info || length < 8) { /* if we don't want an extanded info -> return */
505 return result;
506 }
507 if (php_stream_seek(stream, length - 8, SEEK_CUR)) { /* file error after info */
508 return result;
509 }
510 } else {
511 if (!php_skip_variable(stream)) {
512 return result;
513 }
514 }
515 break;
516
517 case M_APP0:
518 case M_APP1:
519 case M_APP2:
520 case M_APP3:
521 case M_APP4:
522 case M_APP5:
523 case M_APP6:
524 case M_APP7:
525 case M_APP8:
526 case M_APP9:
527 case M_APP10:
528 case M_APP11:
529 case M_APP12:
530 case M_APP13:
531 case M_APP14:
532 case M_APP15:
533 if (info) {
534 if (!php_read_APP(stream, marker, info)) { /* read all the app marks... */
535 return result;
536 }
537 } else {
538 if (!php_skip_variable(stream)) {
539 return result;
540 }
541 }
542 break;
543
544 case M_SOS:
545 case M_EOI:
546 return result; /* we're about to hit image data, or are at EOF. stop processing. */
547
548 default:
549 if (!php_skip_variable(stream)) { /* anything else isn't interesting */
550 return result;
551 }
552 break;
553 }
554 }
555
556 return result; /* perhaps image broken -> no info but size */
557 }
558 /* }}} */
559
560 /* {{{ php_read4
561 */
php_read4(php_stream * stream)562 static unsigned int php_read4(php_stream * stream)
563 {
564 unsigned char a[4];
565
566 /* just return 0 if we hit the end-of-file */
567 if ((php_stream_read(stream, (char*)a, sizeof(a))) != sizeof(a)) return 0;
568
569 return (((unsigned int)a[0]) << 24)
570 + (((unsigned int)a[1]) << 16)
571 + (((unsigned int)a[2]) << 8)
572 + (((unsigned int)a[3]));
573 }
574 /* }}} */
575
576 /* {{{ JPEG 2000 Marker Codes */
577 #define JPEG2000_MARKER_PREFIX 0xFF /* All marker codes start with this */
578 #define JPEG2000_MARKER_SOC 0x4F /* Start of Codestream */
579 #define JPEG2000_MARKER_SOT 0x90 /* Start of Tile part */
580 #define JPEG2000_MARKER_SOD 0x93 /* Start of Data */
581 #define JPEG2000_MARKER_EOC 0xD9 /* End of Codestream */
582 #define JPEG2000_MARKER_SIZ 0x51 /* Image and tile size */
583 #define JPEG2000_MARKER_COD 0x52 /* Coding style default */
584 #define JPEG2000_MARKER_COC 0x53 /* Coding style component */
585 #define JPEG2000_MARKER_RGN 0x5E /* Region of interest */
586 #define JPEG2000_MARKER_QCD 0x5C /* Quantization default */
587 #define JPEG2000_MARKER_QCC 0x5D /* Quantization component */
588 #define JPEG2000_MARKER_POC 0x5F /* Progression order change */
589 #define JPEG2000_MARKER_TLM 0x55 /* Tile-part lengths */
590 #define JPEG2000_MARKER_PLM 0x57 /* Packet length, main header */
591 #define JPEG2000_MARKER_PLT 0x58 /* Packet length, tile-part header */
592 #define JPEG2000_MARKER_PPM 0x60 /* Packed packet headers, main header */
593 #define JPEG2000_MARKER_PPT 0x61 /* Packed packet headers, tile part header */
594 #define JPEG2000_MARKER_SOP 0x91 /* Start of packet */
595 #define JPEG2000_MARKER_EPH 0x92 /* End of packet header */
596 #define JPEG2000_MARKER_CRG 0x63 /* Component registration */
597 #define JPEG2000_MARKER_COM 0x64 /* Comment */
598 /* }}} */
599
600 /* {{{ php_handle_jpc
601 Main loop to parse JPEG2000 raw codestream structure */
php_handle_jpc(php_stream * stream)602 static struct gfxinfo *php_handle_jpc(php_stream * stream)
603 {
604 struct gfxinfo *result = NULL;
605 int highest_bit_depth, bit_depth;
606 unsigned char first_marker_id;
607 unsigned int i;
608
609 /* JPEG 2000 components can be vastly different from one another.
610 Each component can be sampled at a different resolution, use
611 a different colour space, have a separate colour depth, and
612 be compressed totally differently! This makes giving a single
613 "bit depth" answer somewhat problematic. For this implementation
614 we'll use the highest depth encountered. */
615
616 /* Get the single byte that remains after the file type indentification */
617 first_marker_id = php_stream_getc(stream);
618
619 /* Ensure that this marker is SIZ (as is mandated by the standard) */
620 if (first_marker_id != JPEG2000_MARKER_SIZ) {
621 php_error_docref(NULL, E_WARNING, "JPEG2000 codestream corrupt(Expected SIZ marker not found after SOC)");
622 return NULL;
623 }
624
625 result = (struct gfxinfo *)ecalloc(1, sizeof(struct gfxinfo));
626
627 php_read2(stream); /* Lsiz */
628 php_read2(stream); /* Rsiz */
629 result->width = php_read4(stream); /* Xsiz */
630 result->height = php_read4(stream); /* Ysiz */
631
632 #if MBO_0
633 php_read4(stream); /* XOsiz */
634 php_read4(stream); /* YOsiz */
635 php_read4(stream); /* XTsiz */
636 php_read4(stream); /* YTsiz */
637 php_read4(stream); /* XTOsiz */
638 php_read4(stream); /* YTOsiz */
639 #else
640 if (php_stream_seek(stream, 24, SEEK_CUR)) {
641 efree(result);
642 return NULL;
643 }
644 #endif
645
646 result->channels = php_read2(stream); /* Csiz */
647 if ((result->channels == 0 && php_stream_eof(stream)) || result->channels > 256) {
648 efree(result);
649 return NULL;
650 }
651
652 /* Collect bit depth info */
653 highest_bit_depth = 0;
654 for (i = 0; i < result->channels; i++) {
655 bit_depth = php_stream_getc(stream); /* Ssiz[i] */
656 bit_depth++;
657 if (bit_depth > highest_bit_depth) {
658 highest_bit_depth = bit_depth;
659 }
660
661 php_stream_getc(stream); /* XRsiz[i] */
662 php_stream_getc(stream); /* YRsiz[i] */
663 }
664
665 result->bits = highest_bit_depth;
666
667 return result;
668 }
669 /* }}} */
670
671 /* {{{ php_handle_jp2
672 main loop to parse JPEG 2000 JP2 wrapper format structure */
php_handle_jp2(php_stream * stream)673 static struct gfxinfo *php_handle_jp2(php_stream *stream)
674 {
675 struct gfxinfo *result = NULL;
676 unsigned int box_length;
677 unsigned int box_type;
678 char jp2c_box_id[] = {(char)0x6a, (char)0x70, (char)0x32, (char)0x63};
679
680 /* JP2 is a wrapper format for JPEG 2000. Data is contained within "boxes".
681 Boxes themselves can be contained within "super-boxes". Super-Boxes can
682 contain super-boxes which provides us with a hierarchical storage system.
683
684 It is valid for a JP2 file to contain multiple individual codestreams.
685 We'll just look for the first codestream at the root of the box structure
686 and handle that.
687 */
688
689 for (;;)
690 {
691 box_length = php_read4(stream); /* LBox */
692 /* TBox */
693 if (php_stream_read(stream, (void *)&box_type, sizeof(box_type)) != sizeof(box_type)) {
694 /* Use this as a general "out of stream" error */
695 break;
696 }
697
698 if (box_length == 1) {
699 /* We won't handle XLBoxes */
700 return NULL;
701 }
702
703 if (!memcmp(&box_type, jp2c_box_id, 4))
704 {
705 /* Skip the first 3 bytes to emulate the file type examination */
706 php_stream_seek(stream, 3, SEEK_CUR);
707
708 result = php_handle_jpc(stream);
709 break;
710 }
711
712 /* Stop if this was the last box */
713 if ((int)box_length <= 0) {
714 break;
715 }
716
717 /* Skip over LBox (Which includes both TBox and LBox itself */
718 if (php_stream_seek(stream, box_length - 8, SEEK_CUR)) {
719 break;
720 }
721 }
722
723 if (result == NULL) {
724 php_error_docref(NULL, E_WARNING, "JP2 file has no codestreams at root level");
725 }
726
727 return result;
728 }
729 /* }}} */
730
731 /* {{{ tiff constants
732 */
733 PHPAPI const int php_tiff_bytes_per_format[] = {0, 1, 1, 2, 4, 8, 1, 1, 2, 4, 8, 4, 8};
734
735 /* uncompressed only */
736 #define TAG_IMAGEWIDTH 0x0100
737 #define TAG_IMAGEHEIGHT 0x0101
738 /* compressed images only */
739 #define TAG_COMP_IMAGEWIDTH 0xA002
740 #define TAG_COMP_IMAGEHEIGHT 0xA003
741
742 #define TAG_FMT_BYTE 1
743 #define TAG_FMT_STRING 2
744 #define TAG_FMT_USHORT 3
745 #define TAG_FMT_ULONG 4
746 #define TAG_FMT_URATIONAL 5
747 #define TAG_FMT_SBYTE 6
748 #define TAG_FMT_UNDEFINED 7
749 #define TAG_FMT_SSHORT 8
750 #define TAG_FMT_SLONG 9
751 #define TAG_FMT_SRATIONAL 10
752 #define TAG_FMT_SINGLE 11
753 #define TAG_FMT_DOUBLE 12
754 /* }}} */
755
756 /* {{{ php_ifd_get16u
757 * Convert a 16 bit unsigned value from file's native byte order */
php_ifd_get16u(void * Short,int motorola_intel)758 static int php_ifd_get16u(void *Short, int motorola_intel)
759 {
760 if (motorola_intel) {
761 return (((unsigned char *)Short)[0] << 8) | ((unsigned char *)Short)[1];
762 } else {
763 return (((unsigned char *)Short)[1] << 8) | ((unsigned char *)Short)[0];
764 }
765 }
766 /* }}} */
767
768 /* {{{ php_ifd_get16s
769 * Convert a 16 bit signed value from file's native byte order */
php_ifd_get16s(void * Short,int motorola_intel)770 static signed short php_ifd_get16s(void *Short, int motorola_intel)
771 {
772 return (signed short)php_ifd_get16u(Short, motorola_intel);
773 }
774 /* }}} */
775
776 /* {{{ php_ifd_get32s
777 * Convert a 32 bit signed value from file's native byte order */
php_ifd_get32s(void * Long,int motorola_intel)778 static int php_ifd_get32s(void *Long, int motorola_intel)
779 {
780 if (motorola_intel) {
781 return ((( char *)Long)[0] << 24) | (((unsigned char *)Long)[1] << 16)
782 | (((unsigned char *)Long)[2] << 8 ) | (((unsigned char *)Long)[3] << 0 );
783 } else {
784 return ((( char *)Long)[3] << 24) | (((unsigned char *)Long)[2] << 16)
785 | (((unsigned char *)Long)[1] << 8 ) | (((unsigned char *)Long)[0] << 0 );
786 }
787 }
788 /* }}} */
789
790 /* {{{ php_ifd_get32u
791 * Convert a 32 bit unsigned value from file's native byte order */
php_ifd_get32u(void * Long,int motorola_intel)792 static unsigned php_ifd_get32u(void *Long, int motorola_intel)
793 {
794 return (unsigned)php_ifd_get32s(Long, motorola_intel) & 0xffffffff;
795 }
796 /* }}} */
797
798 /* {{{ php_handle_tiff
799 main loop to parse TIFF structure */
php_handle_tiff(php_stream * stream,zval * info,int motorola_intel)800 static struct gfxinfo *php_handle_tiff (php_stream * stream, zval *info, int motorola_intel)
801 {
802 struct gfxinfo *result = NULL;
803 int i, num_entries;
804 unsigned char *dir_entry;
805 size_t ifd_size, dir_size, entry_value, width=0, height=0, ifd_addr;
806 int entry_tag , entry_type;
807 char *ifd_data, ifd_ptr[4];
808
809 if (php_stream_read(stream, ifd_ptr, 4) != 4)
810 return NULL;
811 ifd_addr = php_ifd_get32u(ifd_ptr, motorola_intel);
812 if (php_stream_seek(stream, ifd_addr-8, SEEK_CUR))
813 return NULL;
814 ifd_size = 2;
815 ifd_data = emalloc(ifd_size);
816 if (php_stream_read(stream, ifd_data, 2) != 2) {
817 efree(ifd_data);
818 return NULL;
819 }
820 num_entries = php_ifd_get16u(ifd_data, motorola_intel);
821 dir_size = 2/*num dir entries*/ +12/*length of entry*/*num_entries +4/* offset to next ifd (points to thumbnail or NULL)*/;
822 ifd_size = dir_size;
823 ifd_data = erealloc(ifd_data,ifd_size);
824 if (php_stream_read(stream, ifd_data+2, dir_size-2) != dir_size-2) {
825 efree(ifd_data);
826 return NULL;
827 }
828 /* now we have the directory we can look how long it should be */
829 ifd_size = dir_size;
830 for(i=0;i<num_entries;i++) {
831 dir_entry = (unsigned char *) ifd_data+2+i*12;
832 entry_tag = php_ifd_get16u(dir_entry+0, motorola_intel);
833 entry_type = php_ifd_get16u(dir_entry+2, motorola_intel);
834 switch(entry_type) {
835 case TAG_FMT_BYTE:
836 case TAG_FMT_SBYTE:
837 entry_value = (size_t)(dir_entry[8]);
838 break;
839 case TAG_FMT_USHORT:
840 entry_value = php_ifd_get16u(dir_entry+8, motorola_intel);
841 break;
842 case TAG_FMT_SSHORT:
843 entry_value = php_ifd_get16s(dir_entry+8, motorola_intel);
844 break;
845 case TAG_FMT_ULONG:
846 entry_value = php_ifd_get32u(dir_entry+8, motorola_intel);
847 break;
848 case TAG_FMT_SLONG:
849 entry_value = php_ifd_get32s(dir_entry+8, motorola_intel);
850 break;
851 default:
852 continue;
853 }
854 switch(entry_tag) {
855 case TAG_IMAGEWIDTH:
856 case TAG_COMP_IMAGEWIDTH:
857 width = entry_value;
858 break;
859 case TAG_IMAGEHEIGHT:
860 case TAG_COMP_IMAGEHEIGHT:
861 height = entry_value;
862 break;
863 }
864 }
865 efree(ifd_data);
866 if ( width && height) {
867 /* not the same when in for-loop */
868 result = (struct gfxinfo *) ecalloc(1, sizeof(struct gfxinfo));
869 result->height = height;
870 result->width = width;
871 result->bits = 0;
872 result->channels = 0;
873 return result;
874 }
875 return NULL;
876 }
877 /* }}} */
878
879 /* {{{ php_handle_psd
880 */
php_handle_iff(php_stream * stream)881 static struct gfxinfo *php_handle_iff(php_stream * stream)
882 {
883 struct gfxinfo * result;
884 unsigned char a[10];
885 int chunkId;
886 int size;
887 short width, height, bits;
888
889 if (php_stream_read(stream, (char *) a, 8) != 8) {
890 return NULL;
891 }
892 if (strncmp((char *) a+4, "ILBM", 4) && strncmp((char *) a+4, "PBM ", 4)) {
893 return NULL;
894 }
895
896 /* loop chunks to find BMHD chunk */
897 do {
898 if (php_stream_read(stream, (char*)a, 8) != 8) {
899 return NULL;
900 }
901 chunkId = php_ifd_get32s(a+0, 1);
902 size = php_ifd_get32s(a+4, 1);
903 if (size < 0) {
904 return NULL;
905 }
906 if ((size & 1) == 1) {
907 size++;
908 }
909 if (chunkId == 0x424d4844) { /* BMHD chunk */
910 if (size < 9 || php_stream_read(stream, (char*)a, 9) != 9) {
911 return NULL;
912 }
913 width = php_ifd_get16s(a+0, 1);
914 height = php_ifd_get16s(a+2, 1);
915 bits = a[8] & 0xff;
916 if (width > 0 && height > 0 && bits > 0 && bits < 33) {
917 result = (struct gfxinfo *) ecalloc(1, sizeof(struct gfxinfo));
918 result->width = width;
919 result->height = height;
920 result->bits = bits;
921 result->channels = 0;
922 return result;
923 }
924 } else {
925 if (php_stream_seek(stream, size, SEEK_CUR)) {
926 return NULL;
927 }
928 }
929 } while (1);
930 }
931 /* }}} */
932
933 /* {{{ php_get_wbmp
934 * int WBMP file format type
935 * byte Header Type
936 * byte Extended Header
937 * byte Header Data (type 00 = multibyte)
938 * byte Header Data (type 11 = name/pairs)
939 * int Number of columns
940 * int Number of rows
941 */
php_get_wbmp(php_stream * stream,struct gfxinfo ** result,int check)942 static int php_get_wbmp(php_stream *stream, struct gfxinfo **result, int check)
943 {
944 int i, width = 0, height = 0;
945
946 if (php_stream_rewind(stream)) {
947 return 0;
948 }
949
950 /* get type */
951 if (php_stream_getc(stream) != 0) {
952 return 0;
953 }
954
955 /* skip header */
956 do {
957 i = php_stream_getc(stream);
958 if (i < 0) {
959 return 0;
960 }
961 } while (i & 0x80);
962
963 /* get width */
964 do {
965 i = php_stream_getc(stream);
966 if (i < 0) {
967 return 0;
968 }
969 width = (width << 7) | (i & 0x7f);
970 /* maximum valid width for wbmp (although 127 may be a more accurate one) */
971 if (width > 2048) {
972 return 0;
973 }
974 } while (i & 0x80);
975
976 /* get height */
977 do {
978 i = php_stream_getc(stream);
979 if (i < 0) {
980 return 0;
981 }
982 height = (height << 7) | (i & 0x7f);
983 /* maximum valid heigth for wbmp (although 127 may be a more accurate one) */
984 if (height > 2048) {
985 return 0;
986 }
987 } while (i & 0x80);
988
989 if (!height || !width) {
990 return 0;
991 }
992
993 if (!check) {
994 (*result)->width = width;
995 (*result)->height = height;
996 }
997
998 return IMAGE_FILETYPE_WBMP;
999 }
1000 /* }}} */
1001
1002 /* {{{ php_handle_wbmp
1003 */
php_handle_wbmp(php_stream * stream)1004 static struct gfxinfo *php_handle_wbmp(php_stream * stream)
1005 {
1006 struct gfxinfo *result = (struct gfxinfo *) ecalloc(1, sizeof(struct gfxinfo));
1007
1008 if (!php_get_wbmp(stream, &result, 0)) {
1009 efree(result);
1010 return NULL;
1011 }
1012
1013 return result;
1014 }
1015 /* }}} */
1016
1017 /* {{{ php_get_xbm
1018 */
php_get_xbm(php_stream * stream,struct gfxinfo ** result)1019 static int php_get_xbm(php_stream *stream, struct gfxinfo **result)
1020 {
1021 char *fline;
1022 char *iname;
1023 char *type;
1024 int value;
1025 unsigned int width = 0, height = 0;
1026
1027 if (result) {
1028 *result = NULL;
1029 }
1030 if (php_stream_rewind(stream)) {
1031 return 0;
1032 }
1033 while ((fline=php_stream_gets(stream, NULL, 0)) != NULL) {
1034 iname = estrdup(fline); /* simple way to get necessary buffer of required size */
1035 if (sscanf(fline, "#define %s %d", iname, &value) == 2) {
1036 if (!(type = strrchr(iname, '_'))) {
1037 type = iname;
1038 } else {
1039 type++;
1040 }
1041
1042 if (!strcmp("width", type)) {
1043 width = (unsigned int) value;
1044 if (height) {
1045 efree(iname);
1046 break;
1047 }
1048 }
1049 if (!strcmp("height", type)) {
1050 height = (unsigned int) value;
1051 if (width) {
1052 efree(iname);
1053 break;
1054 }
1055 }
1056 }
1057 efree(fline);
1058 efree(iname);
1059 }
1060 if (fline) {
1061 efree(fline);
1062 }
1063
1064 if (width && height) {
1065 if (result) {
1066 *result = (struct gfxinfo *) ecalloc(1, sizeof(struct gfxinfo));
1067 (*result)->width = width;
1068 (*result)->height = height;
1069 }
1070 return IMAGE_FILETYPE_XBM;
1071 }
1072
1073 return 0;
1074 }
1075 /* }}} */
1076
1077 /* {{{ php_handle_xbm
1078 */
php_handle_xbm(php_stream * stream)1079 static struct gfxinfo *php_handle_xbm(php_stream * stream)
1080 {
1081 struct gfxinfo *result;
1082 php_get_xbm(stream, &result);
1083 return result;
1084 }
1085 /* }}} */
1086
1087 /* {{{ php_handle_ico
1088 */
php_handle_ico(php_stream * stream)1089 static struct gfxinfo *php_handle_ico(php_stream * stream)
1090 {
1091 struct gfxinfo *result = NULL;
1092 unsigned char dim[16];
1093 int num_icons = 0;
1094
1095 if (php_stream_read(stream, (char *) dim, 2) != 2)
1096 return NULL;
1097
1098 num_icons = (((unsigned int)dim[1]) << 8) + ((unsigned int) dim[0]);
1099
1100 if (num_icons < 1 || num_icons > 255)
1101 return NULL;
1102
1103 result = (struct gfxinfo *) ecalloc(1, sizeof(struct gfxinfo));
1104
1105 while (num_icons > 0)
1106 {
1107 if (php_stream_read(stream, (char *) dim, sizeof(dim)) != sizeof(dim))
1108 break;
1109
1110 if ((((unsigned int)dim[7]) << 8) + ((unsigned int)dim[6]) >= result->bits)
1111 {
1112 result->width = (unsigned int)dim[0];
1113 result->height = (unsigned int)dim[1];
1114 result->bits = (((unsigned int)dim[7]) << 8) + ((unsigned int)dim[6]);
1115 }
1116 num_icons--;
1117 }
1118
1119 return result;
1120 }
1121 /* }}} */
1122
1123 /* {{{ php_handle_webp
1124 */
php_handle_webp(php_stream * stream)1125 static struct gfxinfo *php_handle_webp(php_stream * stream)
1126 {
1127 struct gfxinfo *result = NULL;
1128 const char sig[3] = {'V', 'P', '8'};
1129 unsigned char buf[18];
1130 char format;
1131
1132 if (php_stream_read(stream, (char *) buf, 18) != 18)
1133 return NULL;
1134
1135 if (memcmp(buf, sig, 3)) {
1136 return NULL;
1137 }
1138 switch (buf[3]) {
1139 case ' ':
1140 case 'L':
1141 case 'X':
1142 format = buf[3];
1143 break;
1144 default:
1145 return NULL;
1146 }
1147
1148 result = (struct gfxinfo *) ecalloc(1, sizeof(struct gfxinfo));
1149
1150 switch (format) {
1151 case ' ':
1152 result->width = buf[14] + ((buf[15] & 0x3F) << 8);
1153 result->height = buf[16] + ((buf[17] & 0x3F) << 8);
1154 break;
1155 case 'L':
1156 result->width = buf[9] + ((buf[10] & 0x3F) << 8) + 1;
1157 result->height = (buf[10] >> 6) + (buf[11] << 2) + ((buf[12] & 0xF) << 10) + 1;
1158 break;
1159 case 'X':
1160 result->width = buf[12] + (buf[13] << 8) + (buf[14] << 16) + 1;
1161 result->height = buf[15] + (buf[16] << 8) + (buf[17] << 16) + 1;
1162 break;
1163 }
1164 result->bits = 8; /* always 1 byte */
1165
1166 return result;
1167 }
1168 /* }}} */
1169
1170 /* {{{ php_image_type_to_mime_type
1171 * Convert internal image_type to mime type */
php_image_type_to_mime_type(int image_type)1172 PHPAPI char * php_image_type_to_mime_type(int image_type)
1173 {
1174 switch( image_type) {
1175 case IMAGE_FILETYPE_GIF:
1176 return "image/gif";
1177 case IMAGE_FILETYPE_JPEG:
1178 return "image/jpeg";
1179 case IMAGE_FILETYPE_PNG:
1180 return "image/png";
1181 case IMAGE_FILETYPE_SWF:
1182 case IMAGE_FILETYPE_SWC:
1183 return "application/x-shockwave-flash";
1184 case IMAGE_FILETYPE_PSD:
1185 return "image/psd";
1186 case IMAGE_FILETYPE_BMP:
1187 return "image/bmp";
1188 case IMAGE_FILETYPE_TIFF_II:
1189 case IMAGE_FILETYPE_TIFF_MM:
1190 return "image/tiff";
1191 case IMAGE_FILETYPE_IFF:
1192 return "image/iff";
1193 case IMAGE_FILETYPE_WBMP:
1194 return "image/vnd.wap.wbmp";
1195 case IMAGE_FILETYPE_JPC:
1196 return "application/octet-stream";
1197 case IMAGE_FILETYPE_JP2:
1198 return "image/jp2";
1199 case IMAGE_FILETYPE_XBM:
1200 return "image/xbm";
1201 case IMAGE_FILETYPE_ICO:
1202 return "image/vnd.microsoft.icon";
1203 case IMAGE_FILETYPE_WEBP:
1204 return "image/webp";
1205 default:
1206 case IMAGE_FILETYPE_UNKNOWN:
1207 return "application/octet-stream"; /* suppose binary format */
1208 }
1209 }
1210 /* }}} */
1211
1212 /* {{{ proto string image_type_to_mime_type(int imagetype)
1213 Get Mime-Type for image-type returned by getimagesize, exif_read_data, exif_thumbnail, exif_imagetype */
PHP_FUNCTION(image_type_to_mime_type)1214 PHP_FUNCTION(image_type_to_mime_type)
1215 {
1216 zend_long p_image_type;
1217
1218 ZEND_PARSE_PARAMETERS_START(1, 1)
1219 Z_PARAM_LONG(p_image_type)
1220 ZEND_PARSE_PARAMETERS_END();
1221
1222 ZVAL_STRING(return_value, (char*)php_image_type_to_mime_type(p_image_type));
1223 }
1224 /* }}} */
1225
1226 /* {{{ proto string image_type_to_extension(int imagetype [, bool include_dot])
1227 Get file extension for image-type returned by getimagesize, exif_read_data, exif_thumbnail, exif_imagetype */
PHP_FUNCTION(image_type_to_extension)1228 PHP_FUNCTION(image_type_to_extension)
1229 {
1230 zend_long image_type;
1231 zend_bool inc_dot=1;
1232 const char *imgext = NULL;
1233
1234 ZEND_PARSE_PARAMETERS_START(1, 2)
1235 Z_PARAM_LONG(image_type)
1236 Z_PARAM_OPTIONAL
1237 Z_PARAM_BOOL(inc_dot)
1238 ZEND_PARSE_PARAMETERS_END_EX(RETURN_FALSE);
1239
1240 switch (image_type) {
1241 case IMAGE_FILETYPE_GIF:
1242 imgext = ".gif";
1243 break;
1244 case IMAGE_FILETYPE_JPEG:
1245 imgext = ".jpeg";
1246 break;
1247 case IMAGE_FILETYPE_PNG:
1248 imgext = ".png";
1249 break;
1250 case IMAGE_FILETYPE_SWF:
1251 case IMAGE_FILETYPE_SWC:
1252 imgext = ".swf";
1253 break;
1254 case IMAGE_FILETYPE_PSD:
1255 imgext = ".psd";
1256 break;
1257 case IMAGE_FILETYPE_BMP:
1258 case IMAGE_FILETYPE_WBMP:
1259 imgext = ".bmp";
1260 break;
1261 case IMAGE_FILETYPE_TIFF_II:
1262 case IMAGE_FILETYPE_TIFF_MM:
1263 imgext = ".tiff";
1264 break;
1265 case IMAGE_FILETYPE_IFF:
1266 imgext = ".iff";
1267 break;
1268 case IMAGE_FILETYPE_JPC:
1269 imgext = ".jpc";
1270 break;
1271 case IMAGE_FILETYPE_JP2:
1272 imgext = ".jp2";
1273 break;
1274 case IMAGE_FILETYPE_JPX:
1275 imgext = ".jpx";
1276 break;
1277 case IMAGE_FILETYPE_JB2:
1278 imgext = ".jb2";
1279 break;
1280 case IMAGE_FILETYPE_XBM:
1281 imgext = ".xbm";
1282 break;
1283 case IMAGE_FILETYPE_ICO:
1284 imgext = ".ico";
1285 break;
1286 case IMAGE_FILETYPE_WEBP:
1287 imgext = ".webp";
1288 break;
1289 }
1290
1291 if (imgext) {
1292 RETURN_STRING(&imgext[!inc_dot]);
1293 }
1294
1295 RETURN_FALSE;
1296 }
1297 /* }}} */
1298
1299 /* {{{ php_imagetype
1300 detect filetype from first bytes */
php_getimagetype(php_stream * stream,char * filetype)1301 PHPAPI int php_getimagetype(php_stream * stream, char *filetype)
1302 {
1303 char tmp[12];
1304 int twelve_bytes_read;
1305
1306 if ( !filetype) filetype = tmp;
1307 if((php_stream_read(stream, filetype, 3)) != 3) {
1308 php_error_docref(NULL, E_NOTICE, "Read error!");
1309 return IMAGE_FILETYPE_UNKNOWN;
1310 }
1311
1312 /* BYTES READ: 3 */
1313 if (!memcmp(filetype, php_sig_gif, 3)) {
1314 return IMAGE_FILETYPE_GIF;
1315 } else if (!memcmp(filetype, php_sig_jpg, 3)) {
1316 return IMAGE_FILETYPE_JPEG;
1317 } else if (!memcmp(filetype, php_sig_png, 3)) {
1318 if (php_stream_read(stream, filetype+3, 5) != 5) {
1319 php_error_docref(NULL, E_NOTICE, "Read error!");
1320 return IMAGE_FILETYPE_UNKNOWN;
1321 }
1322 if (!memcmp(filetype, php_sig_png, 8)) {
1323 return IMAGE_FILETYPE_PNG;
1324 } else {
1325 php_error_docref(NULL, E_WARNING, "PNG file corrupted by ASCII conversion");
1326 return IMAGE_FILETYPE_UNKNOWN;
1327 }
1328 } else if (!memcmp(filetype, php_sig_swf, 3)) {
1329 return IMAGE_FILETYPE_SWF;
1330 } else if (!memcmp(filetype, php_sig_swc, 3)) {
1331 return IMAGE_FILETYPE_SWC;
1332 } else if (!memcmp(filetype, php_sig_psd, 3)) {
1333 return IMAGE_FILETYPE_PSD;
1334 } else if (!memcmp(filetype, php_sig_bmp, 2)) {
1335 return IMAGE_FILETYPE_BMP;
1336 } else if (!memcmp(filetype, php_sig_jpc, 3)) {
1337 return IMAGE_FILETYPE_JPC;
1338 } else if (!memcmp(filetype, php_sig_riff, 3)) {
1339 if (php_stream_read(stream, filetype+3, 9) != 9) {
1340 php_error_docref(NULL, E_NOTICE, "Read error!");
1341 return IMAGE_FILETYPE_UNKNOWN;
1342 }
1343 if (!memcmp(filetype+8, php_sig_webp, 4)) {
1344 return IMAGE_FILETYPE_WEBP;
1345 } else {
1346 return IMAGE_FILETYPE_UNKNOWN;
1347 }
1348 }
1349
1350 if (php_stream_read(stream, filetype+3, 1) != 1) {
1351 php_error_docref(NULL, E_NOTICE, "Read error!");
1352 return IMAGE_FILETYPE_UNKNOWN;
1353 }
1354 /* BYTES READ: 4 */
1355 if (!memcmp(filetype, php_sig_tif_ii, 4)) {
1356 return IMAGE_FILETYPE_TIFF_II;
1357 } else if (!memcmp(filetype, php_sig_tif_mm, 4)) {
1358 return IMAGE_FILETYPE_TIFF_MM;
1359 } else if (!memcmp(filetype, php_sig_iff, 4)) {
1360 return IMAGE_FILETYPE_IFF;
1361 } else if (!memcmp(filetype, php_sig_ico, 4)) {
1362 return IMAGE_FILETYPE_ICO;
1363 }
1364
1365 /* WBMP may be smaller than 12 bytes, so delay error */
1366 twelve_bytes_read = (php_stream_read(stream, filetype+4, 8) == 8);
1367
1368 /* BYTES READ: 12 */
1369 if (twelve_bytes_read && !memcmp(filetype, php_sig_jp2, 12)) {
1370 return IMAGE_FILETYPE_JP2;
1371 }
1372
1373 /* AFTER ALL ABOVE FAILED */
1374 if (php_get_wbmp(stream, NULL, 1)) {
1375 return IMAGE_FILETYPE_WBMP;
1376 }
1377 if (!twelve_bytes_read) {
1378 php_error_docref(NULL, E_NOTICE, "Read error!");
1379 return IMAGE_FILETYPE_UNKNOWN;
1380 }
1381 if (php_get_xbm(stream, NULL)) {
1382 return IMAGE_FILETYPE_XBM;
1383 }
1384 return IMAGE_FILETYPE_UNKNOWN;
1385 }
1386 /* }}} */
1387
php_getimagesize_from_stream(php_stream * stream,zval * info,INTERNAL_FUNCTION_PARAMETERS)1388 static void php_getimagesize_from_stream(php_stream *stream, zval *info, INTERNAL_FUNCTION_PARAMETERS) /* {{{ */
1389 {
1390 int itype = 0;
1391 struct gfxinfo *result = NULL;
1392
1393 if (!stream) {
1394 RETURN_FALSE;
1395 }
1396
1397 itype = php_getimagetype(stream, NULL);
1398 switch( itype) {
1399 case IMAGE_FILETYPE_GIF:
1400 result = php_handle_gif(stream);
1401 break;
1402 case IMAGE_FILETYPE_JPEG:
1403 if (info) {
1404 result = php_handle_jpeg(stream, info);
1405 } else {
1406 result = php_handle_jpeg(stream, NULL);
1407 }
1408 break;
1409 case IMAGE_FILETYPE_PNG:
1410 result = php_handle_png(stream);
1411 break;
1412 case IMAGE_FILETYPE_SWF:
1413 result = php_handle_swf(stream);
1414 break;
1415 case IMAGE_FILETYPE_SWC:
1416 #if HAVE_ZLIB && !defined(COMPILE_DL_ZLIB)
1417 result = php_handle_swc(stream);
1418 #else
1419 php_error_docref(NULL, E_NOTICE, "The image is a compressed SWF file, but you do not have a static version of the zlib extension enabled");
1420 #endif
1421 break;
1422 case IMAGE_FILETYPE_PSD:
1423 result = php_handle_psd(stream);
1424 break;
1425 case IMAGE_FILETYPE_BMP:
1426 result = php_handle_bmp(stream);
1427 break;
1428 case IMAGE_FILETYPE_TIFF_II:
1429 result = php_handle_tiff(stream, NULL, 0);
1430 break;
1431 case IMAGE_FILETYPE_TIFF_MM:
1432 result = php_handle_tiff(stream, NULL, 1);
1433 break;
1434 case IMAGE_FILETYPE_JPC:
1435 result = php_handle_jpc(stream);
1436 break;
1437 case IMAGE_FILETYPE_JP2:
1438 result = php_handle_jp2(stream);
1439 break;
1440 case IMAGE_FILETYPE_IFF:
1441 result = php_handle_iff(stream);
1442 break;
1443 case IMAGE_FILETYPE_WBMP:
1444 result = php_handle_wbmp(stream);
1445 break;
1446 case IMAGE_FILETYPE_XBM:
1447 result = php_handle_xbm(stream);
1448 break;
1449 case IMAGE_FILETYPE_ICO:
1450 result = php_handle_ico(stream);
1451 break;
1452 case IMAGE_FILETYPE_WEBP:
1453 result = php_handle_webp(stream);
1454 break;
1455 default:
1456 case IMAGE_FILETYPE_UNKNOWN:
1457 break;
1458 }
1459
1460 if (result) {
1461 char temp[MAX_LENGTH_OF_LONG * 2 + sizeof("width=\"\" height=\"\"")];
1462 array_init(return_value);
1463 add_index_long(return_value, 0, result->width);
1464 add_index_long(return_value, 1, result->height);
1465 add_index_long(return_value, 2, itype);
1466 snprintf(temp, sizeof(temp), "width=\"%d\" height=\"%d\"", result->width, result->height);
1467 add_index_string(return_value, 3, temp);
1468
1469 if (result->bits != 0) {
1470 add_assoc_long(return_value, "bits", result->bits);
1471 }
1472 if (result->channels != 0) {
1473 add_assoc_long(return_value, "channels", result->channels);
1474 }
1475 add_assoc_string(return_value, "mime", (char*)php_image_type_to_mime_type(itype));
1476 efree(result);
1477 } else {
1478 RETURN_FALSE;
1479 }
1480 }
1481 /* }}} */
1482
1483 #define FROM_DATA 0
1484 #define FROM_PATH 1
1485
php_getimagesize_from_any(INTERNAL_FUNCTION_PARAMETERS,int mode)1486 static void php_getimagesize_from_any(INTERNAL_FUNCTION_PARAMETERS, int mode) { /* {{{ */
1487 zval *info = NULL;
1488 php_stream *stream = NULL;
1489 char *input;
1490 size_t input_len;
1491 const int argc = ZEND_NUM_ARGS();
1492
1493 ZEND_PARSE_PARAMETERS_START(1, 2)
1494 Z_PARAM_STRING(input, input_len)
1495 Z_PARAM_OPTIONAL
1496 Z_PARAM_ZVAL_DEREF(info)
1497 ZEND_PARSE_PARAMETERS_END();
1498
1499 if (mode == FROM_PATH && CHECK_NULL_PATH(input, input_len)) {
1500 php_error_docref(NULL, E_WARNING, "Invalid path");
1501 return;
1502 }
1503
1504 if (argc == 2) {
1505 zval_ptr_dtor(info);
1506 array_init(info);
1507 }
1508
1509 if (mode == FROM_PATH) {
1510 stream = php_stream_open_wrapper(input, "rb", STREAM_MUST_SEEK|REPORT_ERRORS|IGNORE_PATH, NULL);
1511 } else {
1512 stream = php_stream_memory_open(TEMP_STREAM_READONLY, input, input_len);
1513 }
1514
1515 if (!stream) {
1516 RETURN_FALSE;
1517 }
1518
1519 php_getimagesize_from_stream(stream, info, INTERNAL_FUNCTION_PARAM_PASSTHRU);
1520 php_stream_close(stream);
1521 }
1522 /* }}} */
1523
1524 /* {{{ proto array getimagesize(string imagefile [, array info])
1525 Get the size of an image as 4-element array */
PHP_FUNCTION(getimagesize)1526 PHP_FUNCTION(getimagesize)
1527 {
1528 php_getimagesize_from_any(INTERNAL_FUNCTION_PARAM_PASSTHRU, FROM_PATH);
1529 }
1530 /* }}} */
1531
1532 /* {{{ proto array getimagesizefromstring(string data [, array info])
1533 Get the size of an image as 4-element array */
PHP_FUNCTION(getimagesizefromstring)1534 PHP_FUNCTION(getimagesizefromstring)
1535 {
1536 php_getimagesize_from_any(INTERNAL_FUNCTION_PARAM_PASSTHRU, FROM_DATA);
1537 }
1538 /* }}} */
1539
1540 /*
1541 * Local variables:
1542 * tab-width: 4
1543 * c-basic-offset: 4
1544 * End:
1545 * vim600: sw=4 ts=4 fdm=marker
1546 * vim<600: sw=4 ts=4
1547 */
1548
